:root{
    --mb-teal:#0f8f8f;
    --mb-teal-dark:#086e70;
    --mb-teal-light:#e7f7f6;
    --mb-purple:#6d3bb8;
    --mb-purple-dark:#51268f;
    --mb-purple-light:#f1eafb;
    --mb-ink:#25313d;
    --mb-muted:#66717d;
    --mb-border:#dbe3e8;
    --mb-white:#fff;
    --mb-bg:#f7fafb;
    --mb-warning:#fff7e4;
}
.mb-page-wrap{max-width:1100px;margin:0 auto;padding:30px 22px 70px;color:var(--mb-ink);font-size:17px;line-height:1.65}
.mb-breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:14px;margin-bottom:22px;color:var(--mb-muted)}
.mb-breadcrumbs a{color:var(--mb-teal-dark);text-decoration:none}
.mb-hero{padding:42px;border-radius:24px;background:linear-gradient(135deg,var(--mb-teal-light),var(--mb-purple-light));border:1px solid var(--mb-border);margin-bottom:24px}
.mb-badge{display:inline-block;background:var(--mb-purple);color:#fff;padding:5px 12px;border-radius:999px;font-size:13px;font-weight:700;letter-spacing:.03em;text-transform:uppercase}
.mb-hero h1{font-size:clamp(38px,6vw,64px);line-height:1.05;margin:16px 0 10px;color:var(--mb-purple-dark)}
.mb-lead{font-size:21px;max-width:820px;margin:0}
.mb-tagline{font-weight:800;color:var(--mb-teal-dark);margin:14px 0 0}
.mb-glance{background:#fff;border:1px solid var(--mb-border);border-radius:20px;padding:26px;margin-bottom:22px;box-shadow:0 10px 30px rgba(36,50,61,.06)}
.mb-glance h2{margin-top:0;color:var(--mb-purple-dark)}
.mb-glance-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.mb-glance-grid div{background:var(--mb-bg);border-radius:14px;padding:15px}
.mb-glance-grid span{display:block;color:var(--mb-muted);font-size:13px;text-transform:uppercase;letter-spacing:.04em;font-weight:700}
.mb-glance-grid strong{display:block;margin-top:5px}
.mb-callout{border-left:7px solid var(--mb-purple);background:var(--mb-purple-light);border-radius:12px;padding:18px 22px;margin:22px 0}
.mb-callout strong{color:var(--mb-purple-dark)}
.mb-callout p{margin:5px 0 0;font-size:19px}
.mb-jump-links{position:sticky;top:12px;z-index:20;display:flex;gap:9px;flex-wrap:wrap;background:#fff;padding:12px;border-radius:16px;border:1px solid var(--mb-border);box-shadow:0 8px 24px rgba(36,50,61,.08);margin:24px 0}
.mb-jump-links a{background:var(--mb-teal-light);color:var(--mb-teal-dark);padding:8px 13px;border-radius:999px;text-decoration:none;font-weight:700;font-size:14px}
.mb-section{scroll-margin-top:100px;background:#fff;border:1px solid var(--mb-border);border-radius:20px;padding:30px;margin:24px 0;box-shadow:0 8px 28px rgba(36,50,61,.045)}
.mb-section h2{font-size:32px;color:var(--mb-purple-dark);margin:0 0 20px}
.mb-section h3{font-size:21px;color:var(--mb-teal-dark);margin-top:28px}
.mb-list{padding-left:24px}
.mb-list li{margin:8px 0}
.mb-targets li::marker,.mb-check-yourself li::marker{content:"✓  ";color:var(--mb-teal);font-weight:800}
.mb-vocabulary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;list-style:none;padding:0}
.mb-vocabulary li{background:var(--mb-teal-light);border-radius:12px;padding:14px}
.mb-warning{background:var(--mb-warning);padding:20px;border-radius:14px;margin-top:24px}
.mb-real-life{background:var(--mb-teal-light);padding:20px;border-radius:14px;margin-top:24px}
.mb-faq details{border:1px solid var(--mb-border);border-radius:12px;margin:10px 0;background:#fff}
.mb-faq summary{cursor:pointer;padding:15px 18px;font-weight:800;color:var(--mb-purple-dark)}
.mb-faq details p{padding:0 18px 16px;margin:0}
.mb-video-grid{display:grid;grid-template-columns:1fr;gap:22px}
.mb-video-card{border:1px solid var(--mb-border);border-radius:16px;padding:18px;background:var(--mb-bg)}
.mb-video-card h3{margin:0 0 14px;color:var(--mb-purple-dark)}
.mb-video-embed{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:12px;background:#000}
.mb-video-embed iframe{position:absolute;top:0;left:0;width:100%;height:100%}
.mb-resource-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.mb-resource-card{border:1px solid var(--mb-border);border-radius:16px;padding:20px;background:var(--mb-bg);display:flex;flex-direction:column;align-items:flex-start}
.mb-provider{display:inline-block;background:var(--mb-teal-light);color:var(--mb-teal-dark);border-radius:999px;padding:4px 10px;font-size:12px;font-weight:800;text-transform:uppercase}
.mb-resource-card h3{margin:12px 0 8px;color:var(--mb-ink)}
.mb-resource-note{font-size:14px;color:var(--mb-muted)}
.mb-resource-link,.mb-download{display:inline-block;margin-top:auto;background:var(--mb-purple);color:#fff!important;text-decoration:none;border-radius:10px;padding:10px 15px;font-weight:800}
.mb-resource-link:hover,.mb-download:hover{background:var(--mb-purple-dark)}
.mb-download-grid{display:flex;flex-wrap:wrap;gap:12px}
.mb-parent{background:var(--mb-teal-light)}
.mb-master{background:var(--mb-purple-light)}
.mb-related{display:flex;flex-wrap:wrap;gap:10px}
.mb-related a,.mb-related span{border:1px solid var(--mb-border);border-radius:999px;padding:8px 13px;text-decoration:none;color:var(--mb-teal-dark);background:#fff}
.mb-topic-nav{display:grid;grid-template-columns:1fr auto 1fr;gap:15px;align-items:center;border-top:1px solid var(--mb-border);padding-top:26px;margin-top:32px}
.mb-topic-nav span{display:block;color:var(--mb-muted);font-size:13px;text-transform:uppercase;font-weight:800}
.mb-topic-nav a{text-decoration:none;color:var(--mb-purple-dark);font-weight:800}
.mb-topic-next{text-align:right}
.mb-section-home{background:var(--mb-teal);color:#fff!important;padding:10px 14px;border-radius:10px}
.mb-topics-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.mb-index-section{border:1px solid var(--mb-border);border-radius:18px;padding:22px;background:#fff}
.mb-index-section h2{color:var(--mb-purple-dark)}
@media(max-width:760px){
    .mb-page-wrap{padding:20px 14px 50px}
    .mb-hero{padding:28px 22px}
    .mb-glance-grid,.mb-resource-grid,.mb-vocabulary,.mb-topics-index{grid-template-columns:1fr}
    .mb-jump-links{position:static}
    .mb-topic-nav{grid-template-columns:1fr;text-align:left}
    .mb-topic-next{text-align:left}
}


/* MathBinder homepage */
.mb-home{max-width:1180px;margin:0 auto;padding:24px 20px 70px;color:var(--mb-ink)}
.mb-home-hero{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);gap:42px;align-items:center;padding:54px;border-radius:30px;background:linear-gradient(135deg,#e7f7f6 0%,#f3ecfb 100%);border:1px solid var(--mb-border);overflow:hidden}
.mb-home-kicker{display:block;color:var(--mb-teal-dark);font-size:13px;font-weight:900;letter-spacing:.09em;text-transform:uppercase;margin-bottom:10px}
.mb-home-hero h1{font-size:clamp(44px,7vw,78px);line-height:1.02;color:var(--mb-purple-dark);margin:0 0 18px}
.mb-home-hero p{font-size:20px;line-height:1.6;max-width:760px;margin:0 0 26px}
.mb-home-search{display:flex;gap:10px;background:#fff;padding:9px;border:1px solid var(--mb-border);border-radius:16px;box-shadow:0 12px 30px rgba(42,51,61,.08)}
.mb-home-search input{flex:1;min-width:0;border:0!important;box-shadow:none!important;padding:12px 14px;font-size:17px}
.mb-home-search button{border:0;border-radius:11px;background:var(--mb-purple);color:#fff;padding:12px 20px;font-weight:800;cursor:pointer}
.mb-home-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.mb-home-primary,.mb-home-secondary{display:inline-block;text-decoration:none!important;border-radius:12px;padding:12px 18px;font-weight:850}
.mb-home-primary{background:var(--mb-teal);color:#fff!important}
.mb-home-secondary{background:#fff;color:var(--mb-purple-dark)!important;border:2px solid var(--mb-purple)}
.mb-home-binder-graphic{position:relative;min-height:360px;display:flex;align-items:center;justify-content:center}
.mb-binder-cover{width:245px;height:325px;border-radius:15px 28px 28px 15px;background:linear-gradient(145deg,var(--mb-teal),var(--mb-teal-dark));box-shadow:22px 25px 0 rgba(109,59,184,.18),0 25px 50px rgba(37,49,61,.2);padding:34px 28px;color:#fff;transform:rotate(3deg)}
.mb-binder-cover span{display:block;font-size:28px;font-weight:900;margin-bottom:58px}
.mb-binder-cover strong{font-size:29px;line-height:1.25}
.mb-binder-rings{position:absolute;left:9%;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:54px}
.mb-binder-rings i{display:block;width:60px;height:16px;border:5px solid var(--mb-purple);border-radius:999px;background:#fff}
.mb-home-section{margin-top:70px}
.mb-home-section-heading{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:25px}
.mb-home-section-heading h2,.mb-home-feature h2,.mb-home-help-grid h2,.mb-home-contact h2{font-size:34px;color:var(--mb-purple-dark);margin:0}
.mb-home-section-heading p{max-width:480px;color:var(--mb-muted);margin:0}
.mb-section-card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.mb-section-card{display:flex;flex-direction:column;min-height:230px;border:1px solid var(--mb-border);border-radius:20px;padding:24px;background:#fff;text-decoration:none!important;color:var(--mb-ink)!important;box-shadow:0 10px 30px rgba(36,50,61,.055);transition:transform .18s ease,box-shadow .18s ease}
.mb-section-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(36,50,61,.11)}
.mb-section-number{display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;border-radius:12px;background:var(--mb-purple-light);color:var(--mb-purple-dark);font-weight:900}
.mb-section-card h3{font-size:21px;color:var(--mb-teal-dark);margin:20px 0 8px}
.mb-section-card p{color:var(--mb-muted);margin:0 0 20px}
.mb-card-arrow{margin-top:auto;font-weight:850;color:var(--mb-purple-dark)}
.mb-home-feature{display:grid;grid-template-columns:1fr 1fr;gap:32px;background:var(--mb-purple-light);border-radius:26px;padding:40px;border:1px solid #dfd3f2}
.mb-home-feature-copy p{font-size:18px;line-height:1.65;margin-bottom:24px}
.mb-home-feature-list{display:grid;gap:10px}
.mb-home-feature-list span{display:block;background:#fff;border:1px solid var(--mb-border);border-radius:13px;padding:14px 17px;font-weight:800;color:var(--mb-teal-dark)}
.mb-home-help-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:70px}
.mb-home-help-grid article{border:1px solid var(--mb-border);border-radius:20px;padding:28px;background:#fff}
.mb-help-icon{display:inline-flex;width:46px;height:46px;border-radius:50%;align-items:center;justify-content:center;background:var(--mb-teal-light);color:var(--mb-teal-dark);font-weight:900}
.mb-home-help-grid h2{font-size:25px;margin-top:18px}
.mb-home-help-grid a{font-weight:850;color:var(--mb-purple-dark);text-decoration:none}
.mb-home-contact{display:flex;justify-content:space-between;align-items:center;gap:28px;margin-top:70px;border-radius:24px;background:var(--mb-teal-dark);color:#fff;padding:36px 40px}
.mb-home-contact h2{color:#fff}
.mb-home-contact p{margin-bottom:0}
.mb-home-contact .mb-home-secondary{white-space:nowrap}
@media(max-width:980px){
    .mb-home-hero{grid-template-columns:1fr;padding:38px}
    .mb-home-binder-graphic{display:none}
    .mb-section-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:700px){
    .mb-home{padding:14px 13px 50px}
    .mb-home-hero{padding:28px 21px;border-radius:22px}
    .mb-home-search{display:block}
    .mb-home-search button{width:100%;margin-top:8px}
    .mb-home-section-heading,.mb-home-contact{display:block}
    .mb-section-card-grid,.mb-home-feature,.mb-home-help-grid{grid-template-columns:1fr}
    .mb-home-feature{padding:26px}
    .mb-home-contact .mb-home-secondary{margin-top:18px}
}


/* MathBinder 5.0 branding and live search */
.mb-home-hero-copy::before{
    content:"";
    display:block;
    width:250px;
    height:64px;
    margin-bottom:18px;
    background:url("mathbinder-logo.svg") left center/contain no-repeat;
}
.mb-binder-svg{width:100%;max-width:390px;height:auto;display:block}
.mb-home-search{position:relative}
.mb-search-results{
    display:none;
    position:absolute;
    top:calc(100% + 8px);
    left:0;
    right:0;
    z-index:100;
    background:#fff;
    border:1px solid var(--mb-border);
    border-radius:16px;
    box-shadow:0 18px 45px rgba(36,50,61,.18);
    overflow:hidden;
    text-align:left;
}
.mb-search-results.is-open{display:block}
.mb-search-result{
    display:grid;
    grid-template-columns:1fr auto;
    gap:3px 14px;
    padding:14px 16px;
    border-bottom:1px solid var(--mb-border);
    color:var(--mb-ink)!important;
    text-decoration:none!important;
}
.mb-search-result:last-child{border-bottom:0}
.mb-search-result:hover,.mb-search-result:focus{background:var(--mb-teal-light)}
.mb-search-result-title{font-weight:900;color:var(--mb-purple-dark)}
.mb-search-result-section{font-size:12px;font-weight:800;text-transform:uppercase;color:var(--mb-teal-dark)}
.mb-search-result-summary{grid-column:1/-1;color:var(--mb-muted);font-size:14px}
.mb-search-empty{padding:16px;color:var(--mb-muted)}
.mb-section-card{border-top:7px solid var(--mb-teal)}
.mb-section-card-1,.mb-section-card-5{border-top-color:#0f8f8f}
.mb-section-card-2,.mb-section-card-6{border-top-color:#6d3bb8}
.mb-section-card-3,.mb-section-card-7{border-top-color:#d26b2d}
.mb-section-card-4,.mb-section-card-8{border-top-color:#3c72b8}

/* Binder Section divider pages */
.mb-chapter-header{
    position:relative;
    overflow:hidden;
    padding:48px;
    border-radius:26px;
    background:linear-gradient(135deg,var(--mb-teal-light),var(--mb-purple-light));
    border:1px solid var(--mb-border);
    margin-bottom:28px;
}
.mb-chapter-header::after{
    content:"";
    position:absolute;
    right:-32px;
    top:32px;
    width:180px;
    height:300px;
    border-radius:18px 0 0 18px;
    background:linear-gradient(145deg,var(--mb-teal),var(--mb-teal-dark));
    transform:rotate(4deg);
    opacity:.16;
}
.mb-chapter-label{
    display:inline-block;
    background:var(--mb-purple);
    color:#fff;
    border-radius:999px;
    padding:6px 12px;
    font-size:13px;
    font-weight:900;
    text-transform:uppercase;
    letter-spacing:.05em;
}
.mb-chapter-header h1{font-size:clamp(42px,6vw,66px);line-height:1.05;color:var(--mb-purple-dark);margin:18px 0 12px;max-width:800px}
.mb-chapter-header p{font-size:19px;max-width:760px}
.mb-chapter-page-grid{display:grid;gap:16px}
.mb-chapter-page-card{
    display:grid;
    grid-template-columns:auto 1fr auto;
    gap:18px;
    align-items:center;
    padding:22px;
    border:1px solid var(--mb-border);
    border-radius:18px;
    background:#fff;
    color:var(--mb-ink)!important;
    text-decoration:none!important;
    box-shadow:0 8px 26px rgba(36,50,61,.05);
}
.mb-chapter-page-card:hover{transform:translateY(-2px);box-shadow:0 13px 30px rgba(36,50,61,.10)}
.mb-page-number{display:flex;width:48px;height:48px;align-items:center;justify-content:center;border-radius:14px;background:var(--mb-purple-light);color:var(--mb-purple-dark);font-weight:900}
.mb-chapter-page-card h2{font-size:24px;color:var(--mb-teal-dark);margin:0}
.mb-chapter-page-card p{margin:5px 0 0;color:var(--mb-muted)}
.mb-empty-section{border:1px dashed var(--mb-border);border-radius:18px;padding:32px;text-align:center;background:var(--mb-bg)}

/* Textbook-style Binder Pages */
.mb-page-wrap:not(.mb-section-archive){
    position:relative;
    background:
      linear-gradient(90deg,transparent 0 58px,rgba(214,88,110,.18) 58px 60px,transparent 60px),
      repeating-linear-gradient(0deg,#fff 0 34px,#eef4f7 34px 35px);
    border:1px solid var(--mb-border);
    border-radius:22px;
    box-shadow:0 20px 55px rgba(36,50,61,.10);
    margin-top:30px;
    margin-bottom:50px;
    padding-left:78px;
}
.mb-page-wrap:not(.mb-section-archive)::before{
    content:"";
    position:absolute;
    left:16px;
    top:80px;
    bottom:80px;
    width:22px;
    border-radius:999px;
    background:
      radial-gradient(circle at center,#fff 0 5px,#7c3fc7 6px 9px,transparent 10px)
      center top/22px 105px repeat-y;
}
.mb-page-wrap .mb-hero{
    position:relative;
    border-left:12px solid var(--mb-teal);
    background:linear-gradient(135deg,rgba(231,247,246,.96),rgba(241,234,251,.96));
}
.mb-page-wrap .mb-hero::after{
    content:"MATHBINDER";
    position:absolute;
    top:18px;
    right:24px;
    font-size:12px;
    font-weight:900;
    letter-spacing:.18em;
    color:rgba(92,46,160,.45);
}
.mb-page-wrap .mb-section{
    background:rgba(255,255,255,.96);
}
.mb-page-wrap .mb-section h2{
    display:flex;
    align-items:center;
    gap:12px;
    border-bottom:3px solid var(--mb-teal-light);
    padding-bottom:10px;
}
.mb-page-wrap .mb-section h2::before{
    content:"";
    width:14px;
    height:34px;
    border-radius:999px;
    background:linear-gradient(var(--mb-purple),var(--mb-teal));
}
@media(max-width:760px){
    .mb-home-hero-copy::before{width:210px;height:55px}
    .mb-page-wrap:not(.mb-section-archive){padding-left:22px;background:#fff}
    .mb-page-wrap:not(.mb-section-archive)::before{display:none}
    .mb-chapter-header{padding:30px 22px}
    .mb-chapter-page-card{grid-template-columns:auto 1fr}
    .mb-chapter-page-card .mb-card-arrow{grid-column:2}
}


/* MathBinder Homepage 6.0 */
.mb-home-v6{max-width:1320px}
.mb-home-hero-v6{
    position:relative;
    min-height:720px;
    border-radius:30px;
    overflow:hidden;
    border:1px solid var(--mb-border);
    box-shadow:0 24px 65px rgba(36,50,61,.13);
    background:#eef7f7;
}
.mb-home-hero-image,
.mb-home-hero-image img{
    width:100%;
    height:100%;
}
.mb-home-hero-image{position:absolute;inset:0}
.mb-home-hero-image img{display:block;object-fit:cover;object-position:center}
.mb-home-hero-overlay{
    position:absolute;
    left:4.5%;
    top:4.5%;
    width:min(560px,47%);
    padding:24px;
    border-radius:22px;
    background:rgba(255,255,255,.91);
    backdrop-filter:blur(8px);
    box-shadow:0 18px 50px rgba(36,50,61,.14);
}
.mb-home-brand-lockup img{display:block;width:min(430px,100%);height:auto}
.mb-home-brand-lockup p{
    margin:4px 0 20px;
    color:var(--mb-teal-dark);
    font-weight:850;
    letter-spacing:.04em;
}
.mb-home-search-v6{box-shadow:0 10px 28px rgba(36,50,61,.11)}
.mb-home-binder-section{margin-top:62px}
.mb-section-card-grid-v6 .mb-section-card{
    min-height:245px;
    background:
      linear-gradient(180deg,rgba(255,255,255,.96),rgba(247,250,251,.96));
}
.mb-number-system-feature{
    background:
      linear-gradient(135deg,rgba(231,247,246,.98),rgba(241,234,251,.98));
}
@media(max-width:980px){
    .mb-home-hero-v6{min-height:680px}
    .mb-home-hero-overlay{width:58%}
}
@media(max-width:760px){
    .mb-home-hero-v6{
        min-height:0;
        overflow:visible;
        background:#fff;
        border:0;
        box-shadow:none;
    }
    .mb-home-hero-image{
        position:relative;
        border-radius:22px;
        overflow:hidden;
        border:1px solid var(--mb-border);
    }
    .mb-home-hero-image img{
        height:auto;
        object-fit:contain;
    }
    .mb-home-hero-overlay{
        position:relative;
        left:auto;
        top:auto;
        width:auto;
        margin-top:16px;
        padding:21px;
        background:linear-gradient(135deg,var(--mb-teal-light),var(--mb-purple-light));
    }
}


/* MathBinder Homepage 7.0 polish */
.mb-home-v7{max-width:1320px}
.mb-home-hero-v7{
    position:relative;
    min-height:720px;
    border-radius:30px;
    overflow:hidden;
    border:1px solid var(--mb-border);
    box-shadow:0 24px 65px rgba(36,50,61,.13);
    background:#eef7f7;
}
.mb-home-hero-v7 .mb-home-hero-image img{
    filter:brightness(1.06) contrast(1.04) saturate(1.02);
}
.mb-home-hero-v7 .mb-home-hero-overlay{
    left:4%;
    top:5%;
    width:min(485px,40%);
    padding:20px 22px;
    border-radius:20px;
    background:rgba(255,255,255,.93);
    box-shadow:0 16px 42px rgba(36,50,61,.12);
}
.mb-home-hero-v7 .mb-home-brand-lockup img{width:min(360px,100%)}
.mb-home-hero-v7 .mb-home-brand-lockup p{margin-bottom:15px}
.mb-home-search-v7 input{font-size:16px}
.mb-section-card-grid-v7{grid-template-columns:repeat(4,minmax(0,1fr))}
.mb-section-card-grid-v7 .mb-section-card{
    min-height:275px;
    padding:27px;
    border-radius:22px 22px 34px 22px;
}
.mb-section-card-grid-v7 .mb-section-number{
    width:52px;height:52px;font-size:17px;
}
.mb-section-card-grid-v7 .mb-section-card h3{font-size:23px}
.mb-home-featured-page{
    position:relative;
    margin-top:70px;
    border-radius:28px;
    overflow:hidden;
    border:1px solid #ded2f1;
    background:linear-gradient(135deg,var(--mb-purple-light),var(--mb-teal-light));
    box-shadow:0 16px 40px rgba(36,50,61,.08);
}
.mb-featured-label{
    background:var(--mb-purple);
    color:#fff;
    padding:10px 24px;
    font-size:13px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-featured-content{
    display:grid;
    grid-template-columns:1fr .8fr;
    gap:34px;
    align-items:center;
    padding:42px;
}
.mb-featured-content h2{
    font-size:clamp(38px,5vw,58px);
    line-height:1.05;
    color:var(--mb-purple-dark);
    margin:0 0 16px;
}
.mb-featured-content p{font-size:18px;line-height:1.65;margin-bottom:24px}
.mb-featured-preview{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:12px;
    padding:28px;
    border-radius:18px;
    background:
      linear-gradient(90deg,transparent 0 36px,rgba(214,88,110,.18) 36px 38px,transparent 38px),
      repeating-linear-gradient(0deg,#fff 0 31px,#edf3f6 31px 32px);
    border:1px solid var(--mb-border);
    box-shadow:0 15px 30px rgba(36,50,61,.10);
    transform:rotate(1.5deg);
}
.mb-featured-preview span,.mb-featured-preview strong{
    display:block;
    padding:11px 13px;
    border-radius:10px;
}
.mb-featured-preview span{color:var(--mb-muted)}
.mb-featured-preview strong{background:rgba(231,247,246,.9);color:var(--mb-teal-dark)}
.mb-recent-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.mb-recent-card{
    display:flex;
    flex-direction:column;
    min-height:225px;
    padding:23px;
    border-radius:20px;
    border:1px solid var(--mb-border);
    background:#fff;
    box-shadow:0 10px 28px rgba(36,50,61,.055);
    text-decoration:none!important;
    color:var(--mb-ink)!important;
}
.mb-recent-card span{
    color:var(--mb-teal-dark);
    font-size:12px;
    text-transform:uppercase;
    letter-spacing:.06em;
    font-weight:900;
}
.mb-recent-card h3{font-size:23px;color:var(--mb-purple-dark);margin:14px 0 9px}
.mb-recent-card p{color:var(--mb-muted)}
.mb-recent-card strong{margin-top:auto;color:var(--mb-teal-dark)}
.mb-home-process{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:20px;
    margin-top:70px;
}
.mb-process-card{
    position:relative;
    overflow:hidden;
    min-height:250px;
    border-radius:22px;
    padding:30px;
    border:1px solid var(--mb-border);
    background:#fff;
    box-shadow:0 12px 32px rgba(36,50,61,.06);
}
.mb-process-card:nth-child(1){border-top:8px solid var(--mb-teal)}
.mb-process-card:nth-child(2){border-top:8px solid var(--mb-purple)}
.mb-process-card:nth-child(3){border-top:8px solid #335f91}
.mb-process-number{
    display:flex;
    width:46px;height:46px;
    align-items:center;justify-content:center;
    border-radius:50%;
    background:var(--mb-purple-light);
    color:var(--mb-purple-dark);
    font-weight:900;
}
.mb-process-card h2{
    font-size:34px;
    color:var(--mb-purple-dark);
    margin:24px 0 10px;
}
.mb-process-card p{font-size:17px;color:var(--mb-muted)}
.mb-reveal{
    opacity:0;
    transform:translateY(18px);
    transition:opacity .55s ease,transform .55s ease;
}
.mb-reveal.is-visible{
    opacity:1;
    transform:none;
}
@media(prefers-reduced-motion:reduce){
    .mb-reveal{opacity:1;transform:none;transition:none}
}
@media(max-width:980px){
    .mb-home-hero-v7 .mb-home-hero-overlay{width:55%}
    .mb-section-card-grid-v7,.mb-recent-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:760px){
    .mb-home-hero-v7{min-height:0;overflow:visible;border:0;box-shadow:none}
    .mb-home-hero-v7 .mb-home-hero-image{position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--mb-border)}
    .mb-home-hero-v7 .mb-home-hero-image img{height:auto;object-fit:contain}
    .mb-home-hero-v7 .mb-home-hero-overlay{
        position:relative;left:auto;top:auto;width:auto;margin-top:16px;
        background:linear-gradient(135deg,var(--mb-teal-light),var(--mb-purple-light));
    }
    .mb-section-card-grid-v7,.mb-recent-grid,.mb-home-process,.mb-featured-content{grid-template-columns:1fr}
    .mb-featured-content{padding:27px}
}


/* MathBinder Homepage 7.1 refinements */
.mb-home-hero-v7{
    min-height:790px;
    margin-bottom:86px;
}
.mb-home-hero-v7 .mb-home-hero-overlay{
    left:2.8%;
    top:11.5%;
    width:min(455px,37%);
    padding:18px 20px;
}
.mb-home-hero-v7 .mb-home-brand-lockup img{
    width:min(330px,100%);
}
.mb-home-hero-v7 .mb-home-brand-lockup p{
    margin:2px 0 14px;
}
.mb-home-search-v7{
    margin-top:6px;
}
.mb-home-search-v7 input{
    padding-top:10px;
    padding-bottom:10px;
}
.mb-home-search-v7 button{
    padding:10px 18px;
}
.mb-home-hero-v7 .mb-home-actions{
    margin-top:14px;
}
.mb-home-hero-v7 .mb-home-primary,
.mb-home-hero-v7 .mb-home-secondary{
    padding:10px 15px;
}
.mb-section-card-grid-v7 .mb-section-card{
    transition:
        transform .2s ease,
        box-shadow .2s ease,
        filter .2s ease;
    transform-origin:center bottom;
}
.mb-section-card-grid-v7 .mb-section-card:hover,
.mb-section-card-grid-v7 .mb-section-card:focus-visible{
    transform:translateY(-8px) scale(1.03);
    box-shadow:0 20px 42px rgba(36,50,61,.16);
    filter:saturate(1.05);
}
.mb-home-featured-page{
    background:
        linear-gradient(90deg,transparent 0 46px,rgba(214,88,110,.18) 46px 48px,transparent 48px),
        repeating-linear-gradient(0deg,#fff 0 34px,#edf3f6 34px 35px);
    border:1px solid var(--mb-border);
    box-shadow:0 18px 42px rgba(36,50,61,.10);
}
.mb-home-featured-page::before{
    content:"";
    position:absolute;
    left:12px;
    top:72px;
    bottom:32px;
    width:22px;
    background:
        radial-gradient(circle at center,#fff 0 5px,#7c3fc7 6px 9px,transparent 10px)
        center top/22px 82px repeat-y;
}
.mb-home-featured-page .mb-featured-label{
    padding-left:64px;
}
.mb-featured-content{
    padding-left:68px;
}
.mb-featured-preview{
    transform:rotate(1deg);
}
.mb-home-binder-section{
    margin-top:0;
}
.mb-home-section + .mb-home-section{
    margin-top:78px;
}
.mb-home-help-grid,
.mb-home-process,
.mb-home-contact{
    margin-top:78px;
}
.mb-home-contact{
    margin-bottom:28px;
}
@media(max-width:1120px){
    .mb-home-hero-v7 .mb-home-hero-overlay{
        left:2%;
        width:43%;
    }
}
@media(max-width:980px){
    .mb-home-hero-v7{
        min-height:720px;
        margin-bottom:68px;
    }
    .mb-home-hero-v7 .mb-home-hero-overlay{
        top:9%;
        width:52%;
    }
}
@media(max-width:760px){
    .mb-home-hero-v7{
        min-height:0;
        margin-bottom:48px;
    }
    .mb-home-hero-v7 .mb-home-hero-overlay{
        left:auto;
        top:auto;
        width:auto;
        margin-top:16px;
        padding:20px;
    }
    .mb-home-featured-page::before{
        display:none;
    }
    .mb-home-featured-page .mb-featured-label{
        padding-left:24px;
    }
    .mb-featured-content{
        padding-left:26px;
    }
    .mb-section-card-grid-v7 .mb-section-card:hover,
    .mb-section-card-grid-v7 .mb-section-card:focus-visible{
        transform:translateY(-4px) scale(1.01);
    }
}
@media(prefers-reduced-motion:reduce){
    .mb-section-card-grid-v7 .mb-section-card{
        transition:none;
    }
    .mb-section-card-grid-v7 .mb-section-card:hover,
    .mb-section-card-grid-v7 .mb-section-card:focus-visible{
        transform:none;
    }
}


/* MathBinder Homepage 7.2 final pass */
.mb-home-hero-v7{
    min-height:840px;
    overflow:visible;
    padding-bottom:32px;
}
.mb-home-hero-v7 .mb-home-hero-image{
    border-radius:30px;
    overflow:hidden;
}
.mb-home-hero-v7 .mb-home-hero-image img{
    transform:scale(1.01);
    transition:transform .22s ease-out,filter .22s ease-out;
    will-change:transform;
}
.mb-home-hero-v7 .mb-home-hero-overlay{
    left:1.8%;
    top:31%;
    width:min(410px,34%);
    padding:18px 20px;
    background:rgba(255,255,255,.90);
    border:1px solid rgba(255,255,255,.72);
    backdrop-filter:blur(14px) saturate(1.05);
    -webkit-backdrop-filter:blur(14px) saturate(1.05);
    box-shadow:0 18px 45px rgba(36,50,61,.13);
    transition:transform .22s ease-out;
    will-change:transform;
}
.mb-home-hero-v7 .mb-home-brand-lockup img{
    width:min(300px,100%);
}
.mb-home-hero-v7 .mb-home-brand-lockup p{
    margin-bottom:12px;
}
.mb-home-search-v7{
    border-radius:14px;
    padding:7px;
}
.mb-home-search-v7 input{
    min-height:42px;
}
.mb-home-search-v7 button{
    min-height:42px;
}
.mb-home-hero-v7 .mb-home-actions{
    gap:10px;
}
.mb-home-hero-v7::after{
    content:"";
    position:absolute;
    left:26%;
    top:25%;
    width:12px;
    height:260px;
    pointer-events:none;
    background:linear-gradient(180deg,transparent,rgba(255,255,255,.7),transparent);
    filter:blur(4px);
    opacity:0;
    animation:mb-ring-sheen 8s ease-in-out infinite;
}
@keyframes mb-ring-sheen{
    0%,72%,100%{opacity:0;transform:translateY(-24px)}
    78%{opacity:.8}
    88%{opacity:0;transform:translateY(110px)}
}
.mb-section-card-grid-v7 .mb-section-card{
    position:relative;
    overflow:hidden;
}
.mb-section-card-grid-v7 .mb-section-card::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(135deg,rgba(255,255,255,.34),transparent 42%);
    opacity:0;
    transition:opacity .2s ease;
    pointer-events:none;
}
.mb-section-card-grid-v7 .mb-section-card:hover::after,
.mb-section-card-grid-v7 .mb-section-card.is-tab-active::after{
    opacity:1;
}
.mb-section-card-grid-v7 .mb-section-card:hover,
.mb-section-card-grid-v7 .mb-section-card.is-tab-active{
    transform:translateY(-10px) scale(1.035);
}
.mb-home-featured-page{
    transition:transform .22s ease,box-shadow .22s ease;
}
.mb-home-featured-page:hover{
    transform:translateY(-3px);
    box-shadow:0 22px 48px rgba(36,50,61,.13);
}
.mb-home-help-grid-v72{
    align-items:stretch;
}
.mb-audience-card{
    min-height:330px;
    display:flex;
    flex-direction:column;
    border-top:8px solid var(--mb-teal);
}
.mb-audience-parents{
    border-top-color:var(--mb-purple);
}
.mb-audience-teachers{
    border-top-color:#1f6c86;
}
.mb-audience-card ul{
    margin:14px 0 22px;
    padding-left:20px;
}
.mb-audience-card li{
    margin:8px 0;
}
.mb-audience-card a{
    margin-top:auto;
}
.mb-home-footer{
    margin-top:78px;
    border-radius:26px 26px 0 0;
    overflow:hidden;
    background:linear-gradient(135deg,#075f67,#073e57);
    color:#fff;
}
.mb-home-footer-main{
    display:grid;
    grid-template-columns:1.2fr .7fr 1fr;
    gap:38px;
    padding:40px;
}
.mb-footer-brand img{
    width:min(310px,100%);
    filter:brightness(0) invert(1);
}
.mb-footer-brand p{
    font-weight:850;
    margin:12px 0 3px;
}
.mb-footer-brand span{
    color:rgba(255,255,255,.78);
}
.mb-footer-links h2,
.mb-footer-mission h2{
    color:#fff;
    font-size:19px;
    margin:0 0 14px;
}
.mb-footer-links{
    display:flex;
    flex-direction:column;
    gap:10px;
}
.mb-footer-links a{
    color:#fff!important;
    text-decoration:none;
}
.mb-footer-mission p{
    color:rgba(255,255,255,.82);
}
.mb-home-footer-bottom{
    display:flex;
    justify-content:space-between;
    gap:18px;
    padding:16px 40px;
    background:rgba(0,0,0,.16);
    color:rgba(255,255,255,.8);
    font-size:14px;
}
@media(max-width:1120px){
    .mb-home-hero-v7 .mb-home-hero-overlay{
        width:39%;
        top:29%;
    }
}
@media(max-width:980px){
    .mb-home-hero-v7{
        min-height:760px;
    }
    .mb-home-hero-v7 .mb-home-hero-overlay{
        width:48%;
        top:25%;
    }
}
@media(max-width:760px){
    .mb-home-hero-v7{
        min-height:0;
        padding-bottom:0;
    }
    .mb-home-hero-v7 .mb-home-hero-overlay{
        width:auto;
        left:auto;
        top:auto;
        background:linear-gradient(135deg,var(--mb-teal-light),var(--mb-purple-light));
        backdrop-filter:none;
        -webkit-backdrop-filter:none;
    }
    .mb-home-hero-v7::after{
        display:none;
    }
    .mb-home-footer-main{
        grid-template-columns:1fr;
        padding:28px 22px;
    }
    .mb-home-footer-bottom{
        flex-direction:column;
        padding:16px 22px;
    }
}
@media(prefers-reduced-motion:reduce){
    .mb-home-hero-v7 .mb-home-hero-image img,
    .mb-home-hero-v7 .mb-home-hero-overlay,
    .mb-home-featured-page{
        transition:none;
    }
    .mb-home-hero-v7::after{
        animation:none;
        display:none;
    }
}


/* MathBinder Homepage 7.3 — layout correction */

/* Keep only one visible functional search card */
.mb-home-hero-v7{
    min-height:650px !important;
    height:650px !important;
    overflow:hidden !important;
    padding-bottom:0 !important;
    margin-bottom:58px !important;
    border-radius:30px;
}

/* Crop out the audience strip that is part of the illustration */
.mb-home-hero-v7 .mb-home-hero-image{
    position:absolute !important;
    inset:0 !important;
    overflow:hidden !important;
    border-radius:30px !important;
}
.mb-home-hero-v7 .mb-home-hero-image img{
    width:100% !important;
    height:100% !important;
    object-fit:cover !important;
    object-position:center 8% !important;
    transform:none !important;
}

/* Cover the non-functional search bar printed inside the hero artwork */
.mb-home-hero-v7::before{
    content:"";
    position:absolute;
    z-index:2;
    top:82px;
    right:3.5%;
    width:39%;
    height:90px;
    border-radius:8px;
    background:linear-gradient(
        180deg,
        rgba(255,255,255,.98),
        rgba(255,255,255,.96)
    );
    box-shadow:none;
    pointer-events:none;
}

/* Position the one real search card like the reference screenshot */
.mb-home-hero-v7 .mb-home-hero-overlay{
    z-index:4 !important;
    left:1.8% !important;
    top:43% !important;
    width:min(390px,32%) !important;
    padding:18px 20px !important;
    border-radius:18px !important;
    background:rgba(255,255,255,.95) !important;
    border:1px solid rgba(225,231,235,.95) !important;
    backdrop-filter:blur(9px) !important;
    -webkit-backdrop-filter:blur(9px) !important;
    box-shadow:0 16px 38px rgba(36,50,61,.14) !important;
    transform:none !important;
}
.mb-home-hero-v7 .mb-home-brand-lockup img{
    width:min(270px,100%) !important;
}
.mb-home-hero-v7 .mb-home-brand-lockup p{
    margin:0 0 12px !important;
}
.mb-home-search-v7{
    margin-top:0 !important;
}
.mb-home-search-v7 input{
    min-height:40px !important;
}
.mb-home-search-v7 button{
    min-height:40px !important;
}
.mb-home-hero-v7 .mb-home-actions{
    margin-top:12px !important;
}

/* The real sections begin below the hero */
.mb-home-binder-section{
    margin-top:0 !important;
}

/* Keep Home active in teal */
.current-menu-item > a,
.current_page_item > a,
.menu-item-home.current-menu-item > a,
.menu-item-home.current_page_item > a,
body.home .menu-item-home > a{
    color:#00cfa7 !important;
}

/* Do not let the lower Student/Parent/Teacher cards be clipped */
.mb-home-help-grid-v72{
    overflow:visible !important;
    min-height:0 !important;
}
.mb-home-help-grid-v72 .mb-audience-card{
    overflow:visible !important;
    min-height:330px !important;
}

/* Remove the old hero-only people strip effect if cached styles survive */
.mb-home-hero-v7 + .mb-home-binder-section{
    position:relative;
    z-index:1;
}

/* Tablet */
@media(max-width:1120px){
    .mb-home-hero-v7{
        height:610px !important;
        min-height:610px !important;
    }
    .mb-home-hero-v7::before{
        top:76px;
        width:40%;
        height:82px;
    }
    .mb-home-hero-v7 .mb-home-hero-overlay{
        top:42% !important;
        width:36% !important;
    }
}

/* Mobile: stack image and card; no patch needed */
@media(max-width:760px){
    .mb-home-hero-v7{
        height:auto !important;
        min-height:0 !important;
        overflow:visible !important;
        border:0 !important;
        box-shadow:none !important;
    }
    .mb-home-hero-v7::before{
        display:none !important;
    }
    .mb-home-hero-v7 .mb-home-hero-image{
        position:relative !important;
        inset:auto !important;
        height:auto !important;
    }
    .mb-home-hero-v7 .mb-home-hero-image img{
        height:auto !important;
        object-fit:contain !important;
    }
    .mb-home-hero-v7 .mb-home-hero-overlay{
        position:relative !important;
        left:auto !important;
        top:auto !important;
        width:auto !important;
        margin-top:16px !important;
        background:linear-gradient(135deg,var(--mb-teal-light),var(--mb-purple-light)) !important;
        backdrop-filter:none !important;
        -webkit-backdrop-filter:none !important;
    }
}


/* MathBinder 8.0 production homepage */
body.home .menu-item-home > a,
body.home .current-menu-item > a,
body.home .current_page_item > a{
    color:#00bfa5 !important;
}

.mb-home-v8{
    max-width:1320px;
    margin:0 auto;
    padding:28px 20px 0;
}

.mb-v8-hero{
    display:grid;
    grid-template-columns:minmax(380px,.82fr) minmax(560px,1.18fr);
    gap:34px;
    align-items:center;
    min-height:680px;
    padding:48px;
    border:1px solid var(--mb-border);
    border-radius:30px;
    background:
        radial-gradient(circle at 10% 12%,rgba(15,143,143,.08),transparent 25%),
        radial-gradient(circle at 90% 8%,rgba(109,59,184,.08),transparent 24%),
        #fbfcfd;
    box-shadow:0 24px 65px rgba(36,50,61,.10);
    overflow:hidden;
}

.mb-v8-copy{position:relative;z-index:2}
.mb-v8-logo img{width:min(330px,100%);height:auto}
.mb-v8-copy h1{
    margin:24px 0 12px;
    font-size:clamp(54px,6vw,82px);
    line-height:.98;
}
.mb-v8-copy h1 span{display:block}
.mb-v8-copy h1 span:nth-child(1),
.mb-v8-copy h1 span:nth-child(3){color:var(--mb-teal-dark)}
.mb-v8-copy h1 span:nth-child(2){color:var(--mb-purple-dark)}
.mb-v8-subtitle{
    max-width:520px;
    margin:0 0 24px;
    font-size:20px;
    color:var(--mb-muted);
}

.mb-v8-search-card{
    max-width:500px;
    padding:22px;
    border:1px solid var(--mb-border);
    border-radius:20px;
    background:rgba(255,255,255,.96);
    box-shadow:0 16px 40px rgba(36,50,61,.10);
}
.mb-v8-search-card h2{
    margin:0;
    color:var(--mb-teal-dark);
    font-size:22px;
}
.mb-v8-search-card > p{
    margin:4px 0 15px;
    color:var(--mb-muted);
}
.mb-home-search-v8{
    position:relative;
    display:flex;
    gap:8px;
    padding:7px;
    border:1px solid var(--mb-border);
    border-radius:14px;
    background:#fff;
}
.mb-home-search-v8 input{
    flex:1;
    min-width:0;
    border:0!important;
    box-shadow:none!important;
    padding:10px 12px;
    font-size:16px;
}
.mb-home-search-v8 button{
    border:0;
    border-radius:10px;
    background:var(--mb-purple);
    color:#fff;
    padding:10px 17px;
    font-weight:850;
}
.mb-v8-search-card .mb-home-actions{margin-top:13px}

.mb-v8-art{
    position:relative;
    min-height:590px;
}
.mb-v8-art img{
    position:absolute;
    display:block;
    max-width:none;
    filter:drop-shadow(0 22px 25px rgba(36,50,61,.13));
}
.mb-v8-binder{
    left:-4%;
    bottom:0;
    width:62%;
    z-index:2;
}
.mb-v8-page{
    right:-4%;
    bottom:2%;
    width:68%;
    z-index:1;
}
.mb-v8-art::after{
    content:"";
    position:absolute;
    left:8%;
    right:0;
    bottom:0;
    height:22px;
    border-radius:50%;
    background:rgba(36,50,61,.14);
    filter:blur(15px);
}

.mb-home-binder-section{margin-top:70px!important}
.mb-section-card-grid-v8{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:18px;
}
.mb-section-card-grid-v8 .mb-section-card{min-height:250px}

.mb-v8-content-row{
    display:grid;
    grid-template-columns:.85fr 1.5fr;
    gap:22px;
    margin-top:70px;
}
.mb-v8-featured{margin:0!important}
.mb-v8-featured .mb-featured-content{
    display:block;
    padding:64px 36px 36px 64px;
}
.mb-v8-recent{
    border:1px solid var(--mb-border);
    border-radius:24px;
    background:#fff;
    padding:26px;
    box-shadow:0 12px 34px rgba(36,50,61,.055);
}
.mb-v8-recent-heading{
    display:flex;
    justify-content:space-between;
    gap:18px;
    align-items:center;
    margin-bottom:18px;
}
.mb-v8-recent-heading h2{
    margin:0;
    color:var(--mb-teal-dark);
    font-size:27px;
}
.mb-v8-recent-heading a{
    color:var(--mb-purple-dark);
    font-weight:800;
    text-decoration:none;
}
.mb-recent-grid-v8{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:14px;
}
.mb-recent-grid-v8 .mb-recent-card{min-height:190px}

.mb-home-help-grid-v8{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:20px;
    margin-top:70px;
}
.mb-home-help-grid-v8 .mb-audience-card{
    min-height:345px;
    overflow:visible;
}

.mb-home-footer{margin-top:70px}

@media(max-width:1080px){
    .mb-v8-hero{
        grid-template-columns:1fr;
        padding:38px;
    }
    .mb-v8-search-card{max-width:none}
    .mb-v8-art{min-height:570px}
    .mb-v8-binder{left:7%;width:52%}
    .mb-v8-page{right:3%;width:58%}
    .mb-section-card-grid-v8{grid-template-columns:repeat(2,minmax(0,1fr))}
    .mb-v8-content-row{grid-template-columns:1fr}
}
@media(max-width:760px){
    .mb-home-v8{padding:14px 13px 0}
    .mb-v8-hero{
        padding:26px 20px;
        border-radius:22px;
    }
    .mb-v8-copy h1{font-size:50px}
    .mb-v8-art{min-height:400px}
    .mb-v8-binder{left:-2%;width:66%}
    .mb-v8-page{right:-7%;width:76%}
    .mb-home-search-v8{display:block}
    .mb-home-search-v8 button{width:100%;margin-top:7px}
    .mb-section-card-grid-v8,
    .mb-recent-grid-v8,
    .mb-home-help-grid-v8{grid-template-columns:1fr}
}


/* MathBinder 8.1 — single hero artwork fix */
.mb-v8-art{
    position:relative;
    min-height:590px;
    display:flex;
    align-items:center;
    justify-content:center;
}
.mb-v8-art .mb-v8-binder,
.mb-v8-art .mb-v8-page{
    display:none !important;
}
.mb-v8-scene{
    position:relative !important;
    inset:auto !important;
    width:112% !important;
    max-width:none !important;
    height:auto !important;
    display:block !important;
    object-fit:contain !important;
    filter:drop-shadow(0 22px 25px rgba(36,50,61,.13));
    transform:none !important;
    z-index:2;
}
.mb-v8-art::after{
    left:8%;
    right:8%;
    bottom:7%;
}
@media(max-width:1080px){
    .mb-v8-scene{
        width:94% !important;
    }
}
@media(max-width:760px){
    .mb-v8-art{
        min-height:380px;
    }
    .mb-v8-scene{
        width:118% !important;
    }
}


/* MathBinder 8.2 — remove duplicate search and reveal full tab row */
.mb-v8-art{
    min-height:590px !important;
    overflow:visible !important;
    padding:10px 0 0;
}
.mb-v8-scene{
    width:101% !important;
    max-width:none !important;
    height:auto !important;
    object-fit:contain !important;
    object-position:center center !important;
    transform:none !important;
}
.mb-v8-art::after{
    bottom:2% !important;
}
@media(max-width:1080px){
    .mb-v8-art{
        min-height:540px !important;
    }
    .mb-v8-scene{
        width:92% !important;
    }
}
@media(max-width:760px){
    .mb-v8-art{
        min-height:350px !important;
    }
    .mb-v8-scene{
        width:108% !important;
    }
}


/* MathBinder 8.3 — homepage finishing refinements */

/* Enlarge the approved binder scene slightly while retaining all eight tabs */
.mb-v8-scene{
    width:106% !important;
}
@media(max-width:1080px){
    .mb-v8-scene{
        width:97% !important;
    }
}
@media(max-width:760px){
    .mb-v8-scene{
        width:112% !important;
    }
}

/* Richer audience cards without artificial people */
.mb-home-help-grid-v8{
    gap:22px !important;
}
.mb-home-help-grid-v8 .mb-audience-card{
    position:relative;
    overflow:hidden !important;
    min-height:360px !important;
    padding:30px !important;
    border-width:1px !important;
    border-top-width:9px !important;
    box-shadow:0 14px 35px rgba(36,50,61,.08);
    transition:transform .2s ease, box-shadow .2s ease;
}
.mb-home-help-grid-v8 .mb-audience-card:hover{
    transform:translateY(-5px);
    box-shadow:0 20px 42px rgba(36,50,61,.13);
}
.mb-audience-students{
    background:
      radial-gradient(circle at 92% 12%,rgba(11,138,143,.16),transparent 34%),
      linear-gradient(145deg,#ffffff,#edfafa) !important;
    border-top-color:#0b8a8f !important;
}
.mb-audience-parents{
    background:
      radial-gradient(circle at 92% 12%,rgba(91,46,166,.15),transparent 34%),
      linear-gradient(145deg,#ffffff,#f5effc) !important;
    border-top-color:#5b2ea6 !important;
}
.mb-audience-teachers{
    background:
      radial-gradient(circle at 92% 12%,rgba(47,117,87,.16),transparent 34%),
      linear-gradient(145deg,#ffffff,#eef8f2) !important;
    border-top-color:#2f7557 !important;
}
.mb-home-help-grid-v8 .mb-help-icon{
    display:flex !important;
    width:62px !important;
    height:62px !important;
    align-items:center;
    justify-content:center;
    border-radius:18px !important;
    color:#fff !important;
    font-size:27px !important;
    font-weight:900;
    box-shadow:0 8px 20px rgba(36,50,61,.14);
}
.mb-audience-students .mb-help-icon{
    background:linear-gradient(145deg,#15a2a0,#087274) !important;
}
.mb-audience-parents .mb-help-icon{
    background:linear-gradient(145deg,#7440c1,#4b218f) !important;
}
.mb-audience-teachers .mb-help-icon{
    background:linear-gradient(145deg,#438b68,#245b43) !important;
}
.mb-home-help-grid-v8 .mb-audience-card h2{
    margin-top:20px !important;
    font-size:28px !important;
}
.mb-home-help-grid-v8 .mb-audience-card li{
    position:relative;
    list-style:none;
    margin:10px 0 !important;
    padding-left:24px;
}
.mb-home-help-grid-v8 .mb-audience-card li::before{
    content:"✓";
    position:absolute;
    left:0;
    top:0;
    font-weight:900;
}
.mb-audience-students li::before{color:#0b8a8f}
.mb-audience-parents li::before{color:#5b2ea6}
.mb-audience-teachers li::before{color:#2f7557}
.mb-home-help-grid-v8 .mb-audience-card a{
    display:inline-flex;
    width:max-content;
    padding:10px 16px;
    border-radius:10px;
    color:#fff !important;
    text-decoration:none !important;
    font-weight:850;
}
.mb-audience-students a{background:#0b8a8f}
.mb-audience-parents a{background:#5b2ea6}
.mb-audience-teachers a{background:#2f7557}

/* Full-color logo in the custom MathBinder footer */
.mb-home-footer{
    border-radius:26px 26px 0 0 !important;
}
.mb-footer-brand{
    align-self:start;
}
.mb-footer-brand img{
    width:min(330px,100%) !important;
    filter:none !important;
    background:#fff;
    border-radius:16px;
    padding:12px 16px;
    box-shadow:0 9px 25px rgba(0,0,0,.14);
}
.mb-footer-brand p{
    color:#fff !important;
    margin-top:16px !important;
}
.mb-footer-brand span{
    color:rgba(255,255,255,.85) !important;
}

/* Hide the imported PopularFX/PageLayer footer on the homepage.
   The MathBinder footer above remains visible because it uses .mb-home-footer. */
body.home #colophon,
body.home footer.site-footer,
body.home .site-footer:not(.mb-home-footer),
body.home .footer-wrap,
body.home .footer-wrapper,
body.home #footer:not(.mb-home-footer),
body.home footer.footer:not(.mb-home-footer),
body.home .footer-area,
body.home .site-info{
    display:none !important;
}

/* Ensure the plugin footer is always shown */
body.home .mb-home-footer{
    display:block !important;
}


/* MathBinder 8.4 — clean artwork and final footer removal */
.mb-v8-art{
    min-height:620px !important;
}
.mb-v8-scene{
    width:111% !important;
    max-width:none !important;
    object-fit:contain !important;
    object-position:center bottom !important;
    filter:drop-shadow(0 24px 30px rgba(36,50,61,.15)) !important;
}
@media(max-width:1080px){
    .mb-v8-scene{width:101% !important}
}
@media(max-width:760px){
    .mb-v8-scene{width:116% !important}
}

/* Aggressively hide imported theme footer containers on the homepage */
body.home #footer,
body.home #colophon,
body.home .site-footer,
body.home .footer,
body.home .footer-wrap,
body.home .footer-wrapper,
body.home .footer-area,
body.home .site-info,
body.home [class*="footer-"]:not(.mb-home-footer):not(.mb-home-footer-main):not(.mb-home-footer-bottom),
body.home [id*="footer"]:not(.mb-home-footer){
    display:none !important;
}
body.home .mb-home-footer,
body.home .mb-home-footer *{
    display:revert;
}


/* MathBinder 8.5 — restore custom footer and blend hero background */

/* Slightly larger scene while preserving the full Explore the Binder row */
.mb-v8-scene{
    width:113% !important;
}
@media(max-width:1080px){
    .mb-v8-scene{width:103% !important}
}
@media(max-width:760px){
    .mb-v8-scene{width:118% !important}
}

/* Hide only the imported theme footer, never the custom MathBinder footer */
body.home #colophon,
body.home footer.site-footer:not(.mb-home-footer),
body.home .site-footer:not(.mb-home-footer),
body.home .footer-wrap:not(.mb-home-footer),
body.home .footer-wrapper:not(.mb-home-footer),
body.home .footer-area:not(.mb-home-footer),
body.home .site-info{
    display:none !important;
}

/* Explicitly restore and display the custom footer and all of its children */
body.home .mb-home-footer{
    display:block !important;
    visibility:visible !important;
    opacity:1 !important;
}
body.home .mb-home-footer-main{
    display:grid !important;
}
body.home .mb-home-footer-bottom{
    display:flex !important;
}
body.home .mb-home-footer *,
body.home .mb-home-footer a,
body.home .mb-home-footer img{
    visibility:visible !important;
    opacity:1 !important;
}


/* MathBinder 8.6 — final hero spacing and footer correction */

/* Keep the binder image away from the real search card */
.mb-v8-hero{
    grid-template-columns:minmax(410px,.9fr) minmax(540px,1.1fr) !important;
    column-gap:54px !important;
}
.mb-v8-art{
    margin-left:22px !important;
    overflow:visible !important;
}
.mb-v8-scene{
    width:107% !important;
    transform:translateX(18px) !important;
    object-position:center bottom !important;
}
@media(max-width:1080px){
    .mb-v8-art{margin-left:0 !important}
    .mb-v8-scene{
        width:98% !important;
        transform:none !important;
    }
}
@media(max-width:760px){
    .mb-v8-scene{
        width:111% !important;
        transform:none !important;
    }
}

/* Restore the custom footer content using class names that are not
   caught by earlier broad theme-footer selectors */
body.home .mb-home-footer{
    display:block !important;
    visibility:visible !important;
    opacity:1 !important;
}
body.home .mb-home-footer-main{
    display:grid !important;
    grid-template-columns:1.2fr .7fr 1fr !important;
}
body.home .mb-bottom-brand,
body.home .mb-bottom-links,
body.home .mb-bottom-mission{
    display:block !important;
    visibility:visible !important;
    opacity:1 !important;
}
body.home .mb-bottom-brand img{
    display:block !important;
    visibility:visible !important;
    opacity:1 !important;
    width:min(330px,100%) !important;
    filter:none !important;
    background:#fff;
    border-radius:16px;
    padding:12px 16px;
}
body.home .mb-bottom-brand p{
    color:#fff !important;
    margin:16px 0 3px !important;
    font-weight:850;
}
body.home .mb-bottom-brand span,
body.home .mb-bottom-mission p{
    color:rgba(255,255,255,.85) !important;
}
body.home .mb-bottom-links{
    display:flex !important;
    flex-direction:column;
    gap:10px;
}
body.home .mb-bottom-links h2,
body.home .mb-bottom-mission h2{
    color:#fff !important;
}
body.home .mb-bottom-links a{
    color:#fff !important;
    text-decoration:none !important;
}
body.home .mb-home-footer-bottom{
    display:flex !important;
    visibility:visible !important;
    opacity:1 !important;
}

/* Hide the imported theme footer only */
body.home #colophon,
body.home footer.site-footer:not(.mb-home-footer),
body.home .site-footer:not(.mb-home-footer),
body.home .site-info,
body.home .footer-wrap:not(.mb-home-footer),
body.home .footer-wrapper:not(.mb-home-footer),
body.home .footer-area:not(.mb-home-footer){
    display:none !important;
}

@media(max-width:760px){
    body.home .mb-home-footer-main{
        grid-template-columns:1fr !important;
    }
}


/* MathBinder 9.0 — final homepage hero */
.mb-v8-art{
    min-height:640px !important;
    margin-left:26px !important;
}
.mb-v8-scene{
    width:119% !important;
    max-width:none !important;
    transform:translateX(24px) !important;
    object-position:center bottom !important;
    filter:drop-shadow(0 24px 30px rgba(36,50,61,.15)) !important;
}
@media(max-width:1080px){
    .mb-v8-art{
        min-height:560px !important;
        margin-left:0 !important;
    }
    .mb-v8-scene{
        width:106% !important;
        transform:none !important;
    }
}
@media(max-width:760px){
    .mb-v8-art{
        min-height:390px !important;
    }
    .mb-v8-scene{
        width:116% !important;
        transform:none !important;
    }
}


/* MathBinder 9.1 — final proportion adjustment */

/* Reduce the Search MathBinder card by approximately 8% */
.mb-v8-search-card{
    width:92% !important;
    max-width:460px !important;
    padding:20px !important;
    transform-origin:top left;
}
.mb-v8-search-card h2{
    font-size:21px !important;
}
.mb-v8-search-card > p{
    margin-bottom:13px !important;
}
.mb-home-search-v8 input{
    font-size:15px !important;
    padding:9px 11px !important;
}
.mb-home-search-v8 button{
    padding:9px 15px !important;
}
.mb-v8-search-card .mb-home-actions{
    gap:9px !important;
}
.mb-v8-search-card .mb-home-primary,
.mb-v8-search-card .mb-home-secondary{
    padding:10px 14px !important;
}

/* Enlarge the binder scene slightly and move it right */
.mb-v8-art{
    margin-left:34px !important;
    min-height:650px !important;
}
.mb-v8-scene{
    width:125% !important;
    transform:translateX(38px) !important;
    object-position:center bottom !important;
}

/* Maintain comfortable separation between the two hero columns */
.mb-v8-hero{
    grid-template-columns:minmax(390px,.82fr) minmax(575px,1.18fr) !important;
    column-gap:62px !important;
}

@media(max-width:1080px){
    .mb-v8-search-card{
        width:100% !important;
        max-width:none !important;
    }
    .mb-v8-art{
        margin-left:0 !important;
        min-height:570px !important;
    }
    .mb-v8-scene{
        width:109% !important;
        transform:none !important;
    }
}

@media(max-width:760px){
    .mb-v8-search-card{
        padding:18px !important;
    }
    .mb-v8-art{
        min-height:395px !important;
    }
    .mb-v8-scene{
        width:118% !important;
        transform:none !important;
    }
}


/* MathBinder 9.2 — clean binder-only hero artwork */
.mb-v8-art{
    min-height:650px !important;
    margin-left:34px !important;
    overflow:visible !important;
    display:flex !important;
    align-items:center !important;
    justify-content:center !important;
}
.mb-v8-scene{
    position:relative !important;
    inset:auto !important;
    width:122% !important;
    max-width:none !important;
    height:auto !important;
    object-fit:contain !important;
    object-position:center bottom !important;
    transform:translateX(32px) !important;
    filter:drop-shadow(0 24px 30px rgba(36,50,61,.15)) !important;
}
.mb-v8-art::after{
    bottom:5% !important;
    left:12% !important;
    right:4% !important;
}

@media(max-width:1080px){
    .mb-v8-art{
        min-height:560px !important;
        margin-left:0 !important;
    }
    .mb-v8-scene{
        width:108% !important;
        transform:none !important;
    }
}
@media(max-width:760px){
    .mb-v8-art{
        min-height:390px !important;
    }
    .mb-v8-scene{
        width:116% !important;
        transform:none !important;
    }
}


/* MathBinder 9.2.1 — final hero alignment */
.mb-v8-art{
    justify-content:flex-start !important;
    margin-left:12px !important;
    padding-left:0 !important;
}
.mb-v8-scene{
    transform:translateX(-22px) !important;
}

@media(max-width:1080px){
    .mb-v8-art{
        justify-content:center !important;
        margin-left:0 !important;
    }
    .mb-v8-scene{
        transform:none !important;
    }
}

@media(max-width:760px){
    .mb-v8-art{
        justify-content:center !important;
    }
    .mb-v8-scene{
        transform:none !important;
    }
}


/* MathBinder 9.2.2 — correct image-only alignment */
.mb-v8-art{
    justify-content:center !important;
    margin-left:0 !important;
    padding-left:0 !important;
}
.mb-v8-scene{
    position:relative !important;
    left:-22px !important;
    transform:none !important;
}

@media(max-width:1080px){
    .mb-v8-art{
        justify-content:center !important;
        margin-left:0 !important;
    }
    .mb-v8-scene{
        left:0 !important;
        transform:none !important;
    }
}

@media(max-width:760px){
    .mb-v8-art{
        justify-content:center !important;
    }
    .mb-v8-scene{
        left:0 !important;
        transform:none !important;
    }
}


/* MathBinder 9.2.3 — remove embedded left image gutter */
.mb-v8-art{
    justify-content:center !important;
    margin-left:0 !important;
    padding-left:0 !important;
}
.mb-v8-scene{
    left:0 !important;
    transform:none !important;
    width:122% !important;
}
@media(max-width:1080px){
    .mb-v8-scene{
        left:0 !important;
        transform:none !important;
        width:108% !important;
    }
}
@media(max-width:760px){
    .mb-v8-scene{
        left:0 !important;
        transform:none !important;
        width:116% !important;
    }
}


/* MathBinder 9.3 — restore full first Binder tab visibility */
.mb-v8-art{
    box-sizing:border-box !important;
    padding-left:24px !important;
    padding-right:0 !important;
    overflow:visible !important;
    justify-content:center !important;
    margin-left:0 !important;
}
.mb-v8-scene{
    box-sizing:border-box !important;
    margin-left:24px !important;
    left:0 !important;
    transform:none !important;
    width:122% !important;
}

@media(max-width:1080px){
    .mb-v8-art{
        padding-left:0 !important;
    }
    .mb-v8-scene{
        margin-left:0 !important;
        left:0 !important;
        transform:none !important;
        width:108% !important;
    }
}

@media(max-width:760px){
    .mb-v8-art{
        padding-left:0 !important;
    }
    .mb-v8-scene{
        margin-left:0 !important;
        left:0 !important;
        transform:none !important;
        width:116% !important;
    }
}


/* MathBinder 9.4 — revised clean crop and final sizing */
body.home .mb-v8-art{
    padding-left:0 !important;
    padding-right:0 !important;
    margin-left:0 !important;
    justify-content:center !important;
    overflow:visible !important;
}
body.home .mb-v8-art .mb-v8-scene{
    width:112% !important;
    max-width:none !important;
    margin-left:0 !important;
    left:0 !important;
    transform:none !important;
    object-fit:contain !important;
    object-position:center bottom !important;
}
@media(max-width:1080px){
    body.home .mb-v8-art .mb-v8-scene{
        width:104% !important;
    }
}
@media(max-width:760px){
    body.home .mb-v8-art .mb-v8-scene{
        width:112% !important;
    }
}


/* MathBinder 10.0 — Binder Topics hub */
.mb-topics-hub{
    max-width:1180px;
    margin:0 auto;
    padding:34px 20px 70px;
    color:var(--mb-ink);
}
.mb-topics-hero{
    padding:48px;
    border-radius:28px;
    background:
      radial-gradient(circle at 90% 12%,rgba(109,59,184,.12),transparent 32%),
      radial-gradient(circle at 10% 88%,rgba(15,143,143,.13),transparent 30%),
      linear-gradient(135deg,#f5fbfb,#f7f1fc);
    border:1px solid var(--mb-border);
    box-shadow:0 18px 48px rgba(36,50,61,.08);
}
.mb-topics-eyebrow{
    display:block;
    color:var(--mb-teal-dark);
    font-size:13px;
    font-weight:900;
    letter-spacing:.09em;
    text-transform:uppercase;
}
.mb-topics-hero h1{
    margin:12px 0 16px;
    color:var(--mb-purple-dark);
    font-size:clamp(44px,6vw,70px);
    line-height:1.02;
}
.mb-topics-hero > p{
    max-width:800px;
    font-size:19px;
    color:var(--mb-muted);
}
.mb-topics-search{
    position:relative;
    max-width:720px;
    margin-top:26px;
}
.mb-topics-actions{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    margin-top:18px;
}
.mb-topics-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:22px;
    margin-top:58px;
}
.mb-topics-card{
    position:relative;
    overflow:hidden;
    display:flex;
    flex-direction:column;
    min-height:410px;
    padding:28px;
    border:1px solid var(--mb-border);
    border-top:9px solid var(--mb-teal);
    border-radius:22px;
    background:#fff;
    box-shadow:0 13px 34px rgba(36,50,61,.065);
    transition:transform .2s ease,box-shadow .2s ease;
}
.mb-topics-card:hover{
    transform:translateY(-6px);
    box-shadow:0 20px 44px rgba(36,50,61,.12);
}
.mb-topics-card-2,.mb-topics-card-6{border-top-color:#6d3bb8}
.mb-topics-card-3,.mb-topics-card-7{border-top-color:#d26b2d}
.mb-topics-card-4,.mb-topics-card-8{border-top-color:#3c72b8}
.mb-topics-card-header{
    display:flex;
    align-items:center;
    gap:16px;
}
.mb-topics-number{
    display:flex;
    width:54px;
    height:54px;
    flex:0 0 54px;
    align-items:center;
    justify-content:center;
    border-radius:15px;
    background:var(--mb-purple-light);
    color:var(--mb-purple-dark);
    font-weight:900;
}
.mb-topics-label{
    color:var(--mb-muted);
    font-size:12px;
    font-weight:900;
    letter-spacing:.06em;
    text-transform:uppercase;
}
.mb-topics-card h2{
    margin:3px 0 0;
    color:var(--mb-teal-dark);
    font-size:27px;
}
.mb-topics-card > p{
    color:var(--mb-muted);
    line-height:1.6;
}
.mb-topics-preview{
    list-style:none;
    padding:0;
    margin:8px 0 24px;
}
.mb-topics-preview li{
    position:relative;
    margin:8px 0;
    padding-left:22px;
}
.mb-topics-preview li::before{
    content:"";
    position:absolute;
    left:0;
    top:.65em;
    width:8px;
    height:8px;
    border-radius:50%;
    background:var(--mb-teal);
}
.mb-topics-open{
    display:inline-block;
    width:max-content;
    margin-top:auto;
    padding:11px 16px;
    border-radius:10px;
    background:var(--mb-purple);
    color:#fff!important;
    text-decoration:none!important;
    font-weight:850;
}
.mb-topics-callout{
    display:grid;
    grid-template-columns:1fr minmax(320px,.8fr);
    gap:32px;
    align-items:center;
    margin-top:58px;
    padding:34px;
    border-radius:24px;
    background:var(--mb-teal-dark);
    color:#fff;
}
.mb-topics-callout h2{color:#fff;margin:6px 0 8px}
.mb-topics-callout p{margin:0;color:rgba(255,255,255,.84)}
.mb-topics-bottom-search{
    display:flex;
    gap:8px;
    padding:7px;
    border-radius:14px;
    background:#fff;
}
.mb-topics-bottom-search input{
    flex:1;
    min-width:0;
    border:0!important;
    box-shadow:none!important;
    padding:10px 12px;
}
.mb-topics-bottom-search button{
    border:0;
    border-radius:10px;
    background:var(--mb-purple);
    color:#fff;
    padding:10px 16px;
    font-weight:850;
}

/* Binder Section landing pages */
.mb-section-progress{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,170px)) 1fr;
    gap:14px;
    align-items:stretch;
    margin:24px 0;
}
.mb-section-progress > div{
    border:1px solid var(--mb-border);
    border-radius:15px;
    padding:16px;
    background:#fff;
}
.mb-section-progress span{
    display:block;
    color:var(--mb-muted);
    font-size:12px;
    font-weight:850;
    text-transform:uppercase;
}
.mb-section-progress strong{
    display:block;
    margin-top:5px;
    color:var(--mb-purple-dark);
    font-size:27px;
}
.mb-section-progress > a{
    align-self:center;
    justify-self:end;
    color:var(--mb-teal-dark);
    font-weight:850;
    text-decoration:none;
}
.mb-chapter-page-card.is-coming{
    opacity:.78;
    border-style:dashed;
}
.mb-topic-status{
    display:inline-block;
    margin-bottom:5px;
    color:var(--mb-teal-dark);
    font-size:11px;
    font-weight:900;
    letter-spacing:.05em;
    text-transform:uppercase;
}
.mb-chapter-page-card.is-coming .mb-topic-status{
    color:var(--mb-muted);
}
.mb-topic-features{
    display:flex;
    flex-wrap:wrap;
    gap:7px;
    margin-top:12px;
}
.mb-topic-features span{
    border-radius:999px;
    padding:5px 9px;
    background:var(--mb-teal-light);
    color:var(--mb-teal-dark);
    font-size:12px;
    font-weight:800;
}

@media(max-width:760px){
    .mb-topics-hub{padding:18px 13px 50px}
    .mb-topics-hero{padding:28px 21px}
    .mb-topics-grid{grid-template-columns:1fr}
    .mb-topics-card{min-height:0}
    .mb-topics-callout{grid-template-columns:1fr}
    .mb-topics-bottom-search{display:block}
    .mb-topics-bottom-search button{width:100%;margin-top:7px}
    .mb-section-progress{grid-template-columns:1fr 1fr}
    .mb-section-progress > a{grid-column:1/-1;justify-self:start}
}


/* MathBinder 10.2 — Binder Topics footer only */
.mb-topics-footer{
    width:100%;
    margin-top:28px !important;
    display:block !important;
    visibility:visible !important;
    opacity:1 !important;
    border-radius:26px 26px 0 0 !important;
}
.mb-topics-footer .mb-home-footer-main{
    display:grid !important;
    grid-template-columns:1.2fr .7fr 1fr !important;
}
.mb-topics-footer .mb-bottom-brand img{
    display:block !important;
    width:min(330px,100%) !important;
    background:#fff;
    border-radius:16px;
    padding:12px 16px;
    filter:none !important;
}
.mb-topics-footer .mb-bottom-brand p{
    margin:16px 0 3px !important;
    color:#fff !important;
    font-weight:850;
}
.mb-topics-footer .mb-bottom-brand span,
.mb-topics-footer .mb-bottom-mission p{
    color:rgba(255,255,255,.85) !important;
}
.mb-topics-footer .mb-bottom-links{
    display:flex !important;
    flex-direction:column;
    gap:10px;
}
.mb-topics-footer .mb-bottom-links h2,
.mb-topics-footer .mb-bottom-mission h2{
    color:#fff !important;
}
.mb-topics-footer .mb-bottom-links a{
    color:#fff !important;
    text-decoration:none !important;
}
.mb-topics-footer .mb-home-footer-bottom{
    display:flex !important;
}

/* Hide only the old theme footer on Binder Topics */
body.mb-binder-topics-page #colophon,
body.mb-binder-section-page #colophon,
body.mb-binder-topics-page footer.site-footer:not(.mb-home-footer),
body.mb-binder-section-page footer.site-footer:not(.mb-home-footer),
body.mb-binder-topics-page .site-footer:not(.mb-home-footer),
body.mb-binder-section-page .site-footer:not(.mb-home-footer),
body.mb-binder-topics-page .site-info,
body.mb-binder-section-page .site-info,
body.mb-binder-topics-page .footer-wrap:not(.mb-home-footer),
body.mb-binder-section-page .footer-wrap:not(.mb-home-footer),
body.mb-binder-topics-page .footer-wrapper:not(.mb-home-footer),
body.mb-binder-section-page .footer-wrapper:not(.mb-home-footer),
body.mb-binder-topics-page .footer-area:not(.mb-home-footer),
body.mb-binder-section-page .footer-area:not(.mb-home-footer){
    display:none !important;
}

@media(max-width:760px){
    .mb-topics-footer .mb-home-footer-main{
        grid-template-columns:1fr !important;
    }
}


/* MathBinder 10.3 — Binder Topics notebook pages */
.mb-topics-notebook{
    max-width:1180px;
    margin:0 auto;
    padding:34px 20px 70px;
    color:var(--mb-ink);
}
.mb-topics-notebook-hero{
    position:relative;
    overflow:hidden;
    padding:48px;
    border:1px solid var(--mb-border);
    border-radius:30px;
    background:
      radial-gradient(circle at 90% 10%,rgba(109,59,184,.12),transparent 30%),
      radial-gradient(circle at 8% 90%,rgba(15,143,143,.13),transparent 30%),
      linear-gradient(135deg,#f4fbfb,#f7f2fc);
    box-shadow:0 18px 48px rgba(36,50,61,.08);
}
.mb-topics-kicker{
    display:block;
    color:var(--mb-teal-dark);
    font-size:12px;
    font-weight:900;
    letter-spacing:.1em;
    text-transform:uppercase;
}
.mb-topics-notebook-hero h1{
    margin:10px 0 14px;
    color:var(--mb-purple-dark);
    font-size:clamp(42px,6vw,68px);
    line-height:1;
}
.mb-topics-notebook-hero p{
    max-width:820px;
    margin:0;
    color:var(--mb-muted);
    font-size:18px;
    line-height:1.65;
}
.mb-topics-notebook-search{
    display:flex;
    max-width:720px;
    gap:8px;
    margin-top:26px;
    padding:7px;
    border:1px solid var(--mb-border);
    border-radius:15px;
    background:#fff;
    box-shadow:0 12px 28px rgba(36,50,61,.08);
}
.mb-topics-notebook-search input{
    flex:1;
    min-width:0;
    border:0!important;
    box-shadow:none!important;
    padding:10px 12px;
}
.mb-topics-notebook-search button{
    border:0;
    border-radius:10px;
    background:var(--mb-purple);
    color:#fff;
    padding:10px 16px;
    font-weight:850;
}

.mb-notebook-page-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:30px;
    margin-top:58px;
}
.mb-notebook-page{
    --page-accent:#0f8f8f;
    position:relative;
    min-height:470px;
    padding:0 0 0 46px;
    border:1px solid #d9e2e5;
    border-radius:10px 24px 24px 10px;
    background:
      linear-gradient(90deg,transparent 0 66px,rgba(216,90,90,.23) 66px 68px,transparent 68px),
      repeating-linear-gradient(180deg,#fff 0,#fff 31px,#dcecf2 32px,#fff 33px);
    box-shadow:0 17px 38px rgba(36,50,61,.10);
    transition:transform .22s ease,box-shadow .22s ease;
}
.mb-notebook-page:hover{
    transform:translateY(-7px) rotate(-.25deg);
    box-shadow:0 25px 50px rgba(36,50,61,.15);
}
.mb-notebook-page-2{--page-accent:#185ec4}
.mb-notebook-page-3{--page-accent:#6530a8}
.mb-notebook-page-4{--page-accent:#3284a8}
.mb-notebook-page-5{--page-accent:#68a640}
.mb-notebook-page-6{--page-accent:#55778d}
.mb-notebook-page-7{--page-accent:#174e7c}
.mb-notebook-page-8{--page-accent:#6b31a7}

.mb-notebook-tab{
    position:absolute;
    top:22px;
    right:-13px;
    display:flex;
    min-width:195px;
    max-width:58%;
    align-items:center;
    gap:10px;
    padding:10px 19px 10px 12px;
    border-radius:12px 0 0 12px;
    background:var(--page-accent);
    color:#fff;
    box-shadow:0 8px 18px rgba(36,50,61,.19);
    font-size:12px;
    font-weight:850;
}
.mb-notebook-tab span{
    display:flex;
    width:28px;
    height:28px;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:rgba(255,255,255,.2);
    font-size:14px;
}
.mb-notebook-holes{
    position:absolute;
    left:12px;
    top:86px;
    display:flex;
    flex-direction:column;
    gap:70px;
}
.mb-notebook-holes i{
    display:block;
    width:19px;
    height:19px;
    border:4px solid #c6d0d3;
    border-radius:50%;
    background:#eef3f4;
    box-shadow:inset 0 1px 3px rgba(0,0,0,.12);
}
.mb-notebook-content{
    display:flex;
    min-height:470px;
    flex-direction:column;
    padding:40px 28px 28px 44px;
}
.mb-notebook-title-row{
    display:flex;
    align-items:center;
    gap:16px;
    padding-right:145px;
}
.mb-notebook-icon{
    display:flex;
    width:58px;
    height:58px;
    flex:0 0 58px;
    align-items:center;
    justify-content:center;
    border-radius:17px;
    background:color-mix(in srgb,var(--page-accent) 14%,white);
    color:var(--page-accent);
    font-size:28px;
    font-weight:900;
}
.mb-notebook-label{
    color:var(--page-accent);
    font-size:11px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-notebook-page h2{
    margin:4px 0 0;
    color:var(--mb-purple-dark);
    font-size:28px;
    line-height:1.12;
}
.mb-notebook-rule{
    width:100%;
    height:3px;
    margin:20px 0 16px;
    border-radius:999px;
    background:linear-gradient(90deg,var(--page-accent),transparent);
}
.mb-notebook-intro{
    margin:0 0 12px;
    color:var(--mb-muted);
    line-height:1.55;
}
.mb-notebook-topic-list{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:8px 14px;
    list-style:none;
    padding:0;
    margin:8px 0 22px;
}
.mb-notebook-topic-list li{
    position:relative;
    padding-left:18px;
    font-size:14px;
}
.mb-notebook-topic-list li::before{
    content:"";
    position:absolute;
    left:0;
    top:.58em;
    width:7px;
    height:7px;
    border-radius:50%;
    background:var(--page-accent);
}
.mb-notebook-status{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:auto;
}
.mb-notebook-status span{
    border-radius:999px;
    padding:6px 10px;
    background:#f0f5f6;
    color:var(--mb-muted);
    font-size:11px;
    font-weight:800;
}
.mb-notebook-open{
    display:inline-flex;
    width:max-content;
    margin-top:16px;
    border-radius:10px;
    padding:10px 15px;
    background:var(--page-accent);
    color:#fff!important;
    text-decoration:none!important;
    font-weight:850;
}
.mb-notebook-help{
    display:grid;
    grid-template-columns:1fr auto;
    gap:28px;
    align-items:center;
    margin-top:58px;
    padding:32px 36px;
    border-radius:24px;
    background:linear-gradient(135deg,var(--mb-teal-dark),#064f62);
    color:#fff;
}
.mb-notebook-help h2{
    margin:5px 0 8px;
    color:#fff;
}
.mb-notebook-help p{
    margin:0;
    color:rgba(255,255,255,.84);
}
.mb-notebook-help a{
    border-radius:11px;
    padding:12px 18px;
    background:#fff;
    color:var(--mb-purple-dark)!important;
    text-decoration:none!important;
    font-weight:900;
}

@media(max-width:900px){
    .mb-notebook-page-grid{grid-template-columns:1fr}
}
@media(max-width:760px){
    .mb-topics-notebook{padding:18px 13px 50px}
    .mb-topics-notebook-hero{padding:28px 21px}
    .mb-topics-notebook-search{display:block}
    .mb-topics-notebook-search button{width:100%;margin-top:7px}
    .mb-notebook-page{padding-left:38px}
    .mb-notebook-content{padding:92px 20px 25px 36px}
    .mb-notebook-title-row{padding-right:0}
    .mb-notebook-tab{top:22px;right:-7px;max-width:86%}
    .mb-notebook-topic-list{grid-template-columns:1fr}
    .mb-notebook-help{grid-template-columns:1fr}
    .mb-notebook-help a{width:max-content}
}


/* MathBinder 11.0 — official sitewide footer */
.mb-home-footer,
.mb-topics-footer{
    display:none !important;
}
#mb-official-site-footer,
.mb-official-site-footer{
    display:block !important;
    width:min(1180px,calc(100% - 40px)) !important;
    margin:58px auto 0 !important;
    overflow:hidden !important;
    border-radius:28px 28px 0 0 !important;
    background:linear-gradient(135deg,#0b6b73,#08495e) !important;
    color:#fff !important;
    box-shadow:0 22px 50px rgba(36,50,61,.14) !important;
}
.mb-official-footer-main{
    display:grid !important;
    grid-template-columns:1.2fr .7fr 1fr !important;
    gap:54px !important;
    padding:38px 40px 34px !important;
}
.mb-official-footer-brand img{
    display:block !important;
    width:min(330px,100%) !important;
    padding:12px 16px !important;
    border-radius:16px !important;
    background:#fff !important;
}
.mb-official-footer-brand p{
    margin:17px 0 3px !important;
    color:#fff !important;
    font-weight:850 !important;
}
.mb-official-footer-brand span,
.mb-official-footer-purpose p{
    color:rgba(255,255,255,.85) !important;
}
.mb-official-footer-links{
    display:flex !important;
    flex-direction:column !important;
    gap:9px !important;
}
.mb-official-footer-links h2,
.mb-official-footer-purpose h2{
    margin:0 0 12px !important;
    color:#fff !important;
}
.mb-official-footer-links a{
    color:#fff !important;
    text-decoration:none !important;
    font-weight:700 !important;
}
.mb-official-footer-bottom{
    display:flex !important;
    justify-content:space-between !important;
    padding:15px 40px !important;
    background:#073f52 !important;
    color:#fff !important;
}
@media(max-width:760px){
    #mb-official-site-footer,
    .mb-official-site-footer{
        width:calc(100% - 24px) !important;
    }
    .mb-official-footer-main{
        grid-template-columns:1fr !important;
        gap:28px !important;
        padding:30px 24px !important;
    }
    .mb-official-footer-bottom{
        flex-direction:column !important;
        gap:7px !important;
        padding:15px 24px !important;
    }
}


/* MathBinder 11.1 — Digital Lesson Framework */
.mb-section-intro{
    margin:-4px 0 20px;
    color:var(--mb-muted);
}
.mb-mastery-quiz{
    display:grid;
    gap:15px;
    margin-top:20px;
}
.mb-mastery-question{
    display:grid;
    grid-template-columns:42px 1fr;
    gap:14px;
    align-items:start;
    padding:18px;
    border:1px solid var(--mb-border);
    border-radius:16px;
    background:#fff;
    box-shadow:0 8px 22px rgba(36,50,61,.055);
}
.mb-question-number{
    display:flex;
    width:36px;
    height:36px;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:var(--mb-purple-light);
    color:var(--mb-purple-dark);
    font-weight:900;
}
.mb-mastery-question h3{
    margin:5px 0 12px;
    color:var(--mb-ink);
    font-size:17px;
}
.mb-reveal-answer{
    border:0;
    border-radius:9px;
    padding:8px 12px;
    background:var(--mb-purple);
    color:#fff;
    font-weight:800;
    cursor:pointer;
}
.mb-answer{
    margin-top:12px;
    padding:12px 14px;
    border-left:4px solid var(--mb-teal);
    border-radius:8px;
    background:var(--mb-teal-light);
    color:var(--mb-ink);
}
.mb-teacher{
    border-top:8px solid #2f7d5b;
    background:linear-gradient(135deg,#f4fbf7,#fff);
}
.mb-teacher > h2{
    color:#2f7d5b;
}
.mb-standards li{
    border-left-color:#2f7d5b !important;
}
@media(max-width:620px){
    .mb-mastery-question{
        grid-template-columns:1fr;
    }
}


/* MathBinder 11.2 — textbook polish and interaction */
.mb-page-wrap{
    max-width:1320px !important;
}
.mb-progress-panel{
    display:grid;
    grid-template-columns:minmax(180px,.8fr) minmax(260px,2fr) auto;
    gap:20px;
    align-items:center;
    margin:22px 0;
    padding:18px 22px;
    border:1px solid var(--mb-border);
    border-radius:17px;
    background:linear-gradient(135deg,#f4fbfb,#faf7fd);
}
.mb-progress-copy span{
    display:block;
    color:var(--mb-teal-dark);
    font-size:12px;
    font-weight:900;
    text-transform:uppercase;
}
.mb-progress-copy strong{
    display:block;
    margin-top:3px;
    color:var(--mb-purple-dark);
}
.mb-progress-track{
    height:13px;
    overflow:hidden;
    border-radius:999px;
    background:#dfe9ec;
}
.mb-progress-fill{
    display:block;
    height:100%;
    border-radius:999px;
    background:linear-gradient(90deg,var(--mb-teal),var(--mb-purple));
    transition:width .35s ease;
}
.mb-mark-complete{
    border:0;
    border-radius:10px;
    padding:10px 14px;
    background:var(--mb-purple);
    color:#fff;
    font-weight:850;
    cursor:pointer;
}
.mb-mark-complete.is-complete{
    background:#2f7d5b;
}

.mb-download-grid{
    display:grid !important;
    grid-template-columns:repeat(4,minmax(0,1fr)) !important;
    gap:14px !important;
}
.mb-download-placeholder{
    min-height:125px;
    display:flex;
    flex-direction:column;
    justify-content:space-between;
    padding:18px;
    border:1px dashed #aabac0;
    border-radius:15px;
    background:linear-gradient(145deg,#fff,#f5f8f9);
}
.mb-download-placeholder span{
    color:var(--mb-purple-dark);
    font-weight:850;
}
.mb-download-placeholder strong{
    width:max-content;
    border-radius:999px;
    padding:5px 9px;
    background:#eef2f3;
    color:var(--mb-muted);
    font-size:11px;
    text-transform:uppercase;
}

.mb-support-card-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:15px;
}
.mb-support-card{
    position:relative;
    min-height:145px;
    padding:20px 18px 18px 58px;
    border:1px solid var(--mb-border);
    border-radius:16px;
    background:#fff;
}
.mb-support-icon{
    position:absolute;
    left:17px;
    top:20px;
    width:28px;
    height:28px;
    border-radius:9px;
    background:linear-gradient(135deg,var(--mb-teal),var(--mb-purple));
}
.mb-support-card h3{
    margin:0 0 7px;
    color:var(--mb-purple-dark);
    font-size:16px;
}
.mb-support-card p{
    margin:0;
    color:var(--mb-ink);
    line-height:1.55;
}
.mb-support-teacher .mb-support-card{
    border-top:4px solid #2f7d5b;
}
.mb-support-parent .mb-support-card{
    border-top:4px solid var(--mb-purple);
}

.mb-choice-list{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:10px;
    margin:14px 0;
}
.mb-choice{
    display:flex;
    align-items:center;
    gap:10px;
    padding:12px;
    border:1px solid var(--mb-border);
    border-radius:12px;
    background:#fff;
    cursor:pointer;
    transition:border-color .2s ease,background .2s ease;
}
.mb-choice:hover{
    border-color:var(--mb-purple);
}
.mb-choice input{
    position:absolute;
    opacity:0;
}
.mb-choice-letter{
    display:flex;
    width:30px;
    height:30px;
    align-items:center;
    justify-content:center;
    flex:0 0 30px;
    border-radius:50%;
    background:var(--mb-purple-light);
    color:var(--mb-purple-dark);
    font-weight:900;
}
.mb-choice:has(input:checked){
    border-color:var(--mb-purple);
    background:#f7f1fc;
}
.mb-choice.is-correct{
    border-color:#2f7d5b;
    background:#edf8f2;
}
.mb-choice.is-incorrect{
    border-color:#b64f4f;
    background:#fff1f1;
}
.mb-submit-choice{
    border:0;
    border-radius:9px;
    padding:9px 14px;
    background:var(--mb-purple);
    color:#fff;
    font-weight:850;
    cursor:pointer;
}
.mb-choice-feedback{
    margin-top:11px;
    font-weight:800;
}
.mb-choice-feedback.is-correct{color:#2f7d5b}
.mb-choice-feedback.is-incorrect{color:#a23f3f}
.mb-choice-feedback.is-warning{color:#91610d}

.mb-related{
    display:flex !important;
    flex-wrap:wrap;
    gap:10px;
}
.mb-related-tab{
    position:relative;
    display:inline-flex !important;
    align-items:center;
    min-height:48px;
    padding:10px 16px 10px 28px !important;
    border:0 !important;
    border-radius:5px 14px 14px 5px !important;
    background:linear-gradient(135deg,var(--mb-teal),var(--mb-teal-dark)) !important;
    color:#fff !important;
    box-shadow:0 6px 14px rgba(36,50,61,.13);
    font-weight:850;
    text-decoration:none !important;
}
.mb-related-tab::before{
    content:"";
    position:absolute;
    left:9px;
    width:9px;
    height:9px;
    border:2px solid rgba(255,255,255,.8);
    border-radius:50%;
}
.mb-related-tab:nth-child(even){
    background:linear-gradient(135deg,var(--mb-purple),var(--mb-purple-dark)) !important;
}
.mb-related-tab.is-unavailable{
    opacity:.55;
}

@media(max-width:900px){
    .mb-progress-panel{
        grid-template-columns:1fr;
    }
    .mb-download-grid{
        grid-template-columns:repeat(2,minmax(0,1fr)) !important;
    }
}
@media(max-width:650px){
    .mb-support-card-grid,
    .mb-choice-list{
        grid-template-columns:1fr;
    }
    .mb-download-grid{
        grid-template-columns:1fr !important;
    }
}


/* MathBinder 12.0 — Student Experience */
.mb-page-wrap{
    position:relative;
}
.mb-student-rail{
    position:fixed;
    left:10px;
    top:160px;
    z-index:20;
    display:flex;
    flex-direction:column;
    gap:18px;
}
.mb-student-rail a{
    display:flex;
    align-items:center;
    gap:8px;
    color:var(--mb-muted);
    text-decoration:none;
    font-size:12px;
    font-weight:800;
}
.mb-student-rail a span{
    width:18px;
    height:18px;
    border:3px solid var(--mb-purple);
    border-radius:50%;
    background:#fff;
    transition:.2s ease;
}
.mb-student-rail a em{
    opacity:0;
    transform:translateX(-6px);
    transition:.2s ease;
    font-style:normal;
    pointer-events:none;
}
.mb-student-rail a:hover em,
.mb-student-rail a.is-active em{
    opacity:1;
    transform:none;
}
.mb-student-rail a.is-active span{
    background:var(--mb-purple);
    box-shadow:0 0 0 5px rgba(104,48,184,.12);
}

.mb-hero-badges{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:18px;
}
.mb-hero-badges span{
    border-radius:999px;
    padding:7px 11px;
    background:rgba(255,255,255,.72);
    color:var(--mb-teal-dark);
    font-size:12px;
    font-weight:850;
}

.mb-section{
    scroll-margin-top:90px;
}
.mb-section-toggle{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    border:0;
    border-bottom:3px solid #dff1f1;
    padding:0 0 14px;
    background:transparent;
    color:var(--mb-purple-dark);
    font-size:30px;
    font-weight:500;
    cursor:pointer;
    text-align:left;
}
.mb-section-toggle span:first-child{
    display:flex;
    align-items:center;
    gap:12px;
}
.mb-section-toggle span:first-child::before{
    content:"";
    display:inline-block;
    width:13px;
    height:32px;
    border-radius:7px;
    background:linear-gradient(var(--mb-purple),var(--mb-teal));
}
.mb-toggle-icon{
    transition:transform .25s ease;
    font-size:26px;
}
.mb-section-toggle[aria-expanded="true"] .mb-toggle-icon{
    transform:rotate(180deg);
}
.mb-collapsible-content{
    padding-top:24px;
}
.mb-collapsible-content[hidden]{
    display:none !important;
}

.mb-video-grid{
    grid-template-columns:1fr !important;
}
.mb-video-card{
    width:100%;
}
.mb-video-embed{
    aspect-ratio:16/9;
    width:100%;
}
.mb-video-embed iframe{
    width:100% !important;
    height:100% !important;
    border-radius:16px;
}

.mb-mastery-heading{
    display:flex;
    justify-content:space-between;
    gap:18px;
    align-items:center;
    margin-bottom:18px;
}
.mb-question-progress{
    flex:0 0 auto;
    border-radius:999px;
    padding:7px 11px;
    background:var(--mb-purple-light);
    color:var(--mb-purple-dark);
    font-size:12px;
    font-weight:900;
}
.mb-mastery-question.mb-celebrate{
    animation:mb-pop .8s ease;
}
@keyframes mb-pop{
    0%{transform:scale(1)}
    35%{transform:scale(1.02);box-shadow:0 0 0 8px rgba(47,125,91,.12)}
    100%{transform:scale(1)}
}

.mb-lesson-finish{
    display:grid;
    grid-template-columns:1fr auto;
    gap:28px;
    align-items:center;
    margin:38px 0 28px;
    padding:30px 34px;
    border-radius:24px;
    background:linear-gradient(135deg,#f3fbf7,#f7f1fc);
    border:1px solid var(--mb-border);
    opacity:.82;
}
.mb-lesson-finish.is-complete{
    opacity:1;
    box-shadow:0 18px 40px rgba(36,50,61,.1);
}
.mb-finish-kicker{
    color:#2f7d5b;
    font-size:12px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-lesson-finish h2{
    margin:6px 0 8px;
    color:var(--mb-purple-dark);
}
.mb-lesson-finish p{
    margin:0;
    color:var(--mb-muted);
}
.mb-finish-actions{
    display:flex;
    flex-direction:column;
    gap:10px;
    align-items:flex-end;
}
.mb-next-lesson,
.mb-back-topics{
    border-radius:11px;
    padding:11px 15px;
    text-decoration:none !important;
    font-weight:850;
}
.mb-next-lesson{
    background:var(--mb-purple);
    color:#fff !important;
}
.mb-back-topics{
    background:#fff;
    color:var(--mb-teal-dark) !important;
    border:1px solid var(--mb-border);
}

@media(max-width:1100px){
    .mb-student-rail{
        display:none;
    }
}
@media(max-width:760px){
    .mb-section-toggle{
        font-size:24px;
    }
    .mb-mastery-heading{
        align-items:flex-start;
        flex-direction:column;
    }
    .mb-lesson-finish{
        grid-template-columns:1fr;
    }
    .mb-finish-actions{
        align-items:stretch;
    }
}


/* MathBinder 12.1 — separate connected lesson progress rail */
.mb-student-rail{
    left:18px !important;
    top:170px !important;
    gap:0 !important;
    padding:6px 0 !important;
}

.mb-student-rail::before{
    content:"";
    position:absolute;
    left:6px;
    top:17px;
    bottom:17px;
    width:2px;
    background:linear-gradient(
        to bottom,
        rgba(104,48,184,.18),
        rgba(15,143,143,.38),
        rgba(104,48,184,.18)
    );
    border-radius:999px;
    z-index:-1;
}

.mb-student-rail a{
    position:relative;
    min-height:42px;
    gap:10px !important;
    color:var(--mb-muted) !important;
}

.mb-student-rail a span{
    width:14px !important;
    height:14px !important;
    flex:0 0 14px !important;
    border:2px solid var(--mb-purple) !important;
    background:#fff !important;
    box-shadow:0 0 0 4px rgba(255,255,255,.96) !important;
}

.mb-student-rail a em{
    position:absolute;
    left:28px;
    white-space:nowrap;
    border:1px solid var(--mb-border);
    border-radius:8px;
    padding:5px 8px;
    background:#fff;
    box-shadow:0 7px 18px rgba(36,50,61,.10);
    color:var(--mb-ink);
    font-size:11px;
    font-weight:850;
    opacity:0;
    transform:translateX(-5px);
    pointer-events:none;
}

.mb-student-rail a:hover em,
.mb-student-rail a:focus-visible em,
.mb-student-rail a.is-active em{
    opacity:1 !important;
    transform:translateX(0) !important;
}

.mb-student-rail a.is-active span{
    background:linear-gradient(135deg,var(--mb-purple),var(--mb-teal)) !important;
    border-color:var(--mb-purple) !important;
    box-shadow:
        0 0 0 4px rgba(255,255,255,.96),
        0 0 0 7px rgba(104,48,184,.13) !important;
}

.mb-student-rail a.is-active em{
    color:var(--mb-purple-dark);
    border-color:rgba(104,48,184,.22);
}

.mb-student-rail a.is-first::before,
.mb-student-rail a.is-last::after{
    content:"";
    position:absolute;
    left:5px;
    width:4px;
    height:10px;
    background:#fff;
    z-index:-1;
}

.mb-student-rail a.is-first::before{
    top:0;
}

.mb-student-rail a.is-last::after{
    bottom:0;
}

.mb-page-wrap{
    padding-left:42px !important;
}

@media(max-width:1180px){
    .mb-student-rail{
        display:none !important;
    }

    .mb-page-wrap{
        padding-left:20px !important;
    }
}


/* MathBinder 12.2 — clean notebook margin and sticky binder-tab navigation */
.mb-student-rail{
    display:none !important;
}

.mb-page-wrap{
    padding-left:20px !important;
}

.mb-sticky-section-nav{
    position:sticky !important;
    top:32px !important;
    z-index:35 !important;
    display:flex !important;
    flex-wrap:wrap !important;
    gap:8px !important;
    margin:18px 0 24px !important;
    padding:10px 12px !important;
    border:1px solid var(--mb-border) !important;
    border-radius:16px !important;
    background:rgba(255,255,255,.96) !important;
    box-shadow:0 10px 26px rgba(36,50,61,.08) !important;
    backdrop-filter:blur(8px);
}

.mb-sticky-section-nav a{
    position:relative;
    display:inline-flex !important;
    align-items:center !important;
    min-height:38px !important;
    padding:9px 14px !important;
    border-radius:10px !important;
    background:var(--mb-teal-light) !important;
    color:var(--mb-teal-dark) !important;
    text-decoration:none !important;
    font-weight:850 !important;
    transition:
        background .2s ease,
        color .2s ease,
        transform .2s ease,
        box-shadow .2s ease !important;
}

.mb-sticky-section-nav a:hover{
    transform:translateY(-1px);
}

.mb-sticky-section-nav a.is-active{
    background:linear-gradient(135deg,var(--mb-teal),var(--mb-purple)) !important;
    color:#fff !important;
    box-shadow:0 7px 16px rgba(70,50,130,.18) !important;
}

.mb-sticky-section-nav a.is-active::after{
    content:"";
    position:absolute;
    left:16px;
    right:16px;
    bottom:-5px;
    height:3px;
    border-radius:999px;
    background:var(--mb-purple);
}

.mb-section{
    scroll-margin-top:118px !important;
}

/* Section headers retain the binder-divider feel without adding more navigation marks */
.mb-section-toggle{
    border-bottom:0 !important;
    padding:14px 18px !important;
    border-radius:14px 14px 0 0 !important;
    background:
        linear-gradient(90deg,rgba(15,143,143,.10),rgba(104,48,184,.08)) !important;
}

.mb-section-toggle span:first-child::before{
    width:10px !important;
    height:28px !important;
}

.mb-collapsible-content{
    padding:24px 18px 4px !important;
}

@media(max-width:782px){
    .mb-sticky-section-nav{
        top:0 !important;
        overflow-x:auto !important;
        flex-wrap:nowrap !important;
        scrollbar-width:thin;
    }

    .mb-sticky-section-nav a{
        flex:0 0 auto !important;
        white-space:nowrap !important;
    }
}


/* MathBinder 12.2.1 — restore notebook-hole gutter */
.mb-page-wrap{
    box-sizing:border-box !important;
    width:min(1320px,calc(100% - 32px)) !important;
    max-width:1320px !important;
    margin-left:auto !important;
    margin-right:auto !important;
    padding-left:72px !important;
    padding-right:22px !important;
}

/* Keep all major lesson panels out of the decorative binding margin */
.mb-page-wrap > .mb-breadcrumbs,
.mb-page-wrap > .mb-hero,
.mb-page-wrap > .mb-progress-panel,
.mb-page-wrap > .mb-glance,
.mb-page-wrap > .mb-essential,
.mb-page-wrap > .mb-jump-links,
.mb-page-wrap > .mb-section,
.mb-page-wrap > .mb-lesson-finish,
.mb-page-wrap > .mb-topic-nav{
    position:relative !important;
    z-index:2 !important;
}

/* Preserve the notebook line and holes as a distinct left gutter */
.mb-page-wrap::before{
    left:48px !important;
}

.mb-page-wrap .mb-binder-holes,
.mb-page-wrap .mb-holes,
.mb-page-wrap [class*="binder-hole"]{
    left:10px !important;
    z-index:1 !important;
}

/* Prevent the hero's teal edge from sitting on top of the holes */
.mb-hero{
    margin-left:0 !important;
    overflow:hidden !important;
}

/* Sticky tabs remain aligned with the lesson content */
.mb-sticky-section-nav{
    margin-left:0 !important;
    margin-right:0 !important;
}

@media(max-width:782px){
    .mb-page-wrap{
        width:calc(100% - 16px) !important;
        padding-left:42px !important;
        padding-right:12px !important;
    }

    .mb-page-wrap::before{
        left:28px !important;
    }
}


/* MathBinder 13.0 — Student Progress */
.mb-lesson-tools{
    display:flex;
    flex-wrap:wrap;
    gap:9px;
    margin-top:18px;
}
.mb-lesson-tools a,
.mb-lesson-tools button{
    border:1px solid rgba(83,75,120,.18);
    border-radius:10px;
    padding:8px 12px;
    background:#fff;
    color:var(--mb-purple-dark);
    font:inherit;
    font-size:12px;
    font-weight:850;
    text-decoration:none;
    cursor:pointer;
}
.mb-lesson-tools button.is-favorite{
    border-color:#b38a21;
    background:#fff8dd;
    color:#76560a;
}
.mb-inside-cover{
    position:relative;
    overflow:hidden;
    background:
        linear-gradient(90deg,rgba(15,143,143,.06),transparent 42%),
        #fff !important;
}
.mb-inside-cover::after{
    content:"MATHBINDER";
    position:absolute;
    right:24px;
    bottom:14px;
    color:rgba(104,48,184,.08);
    font-size:34px;
    font-weight:900;
    letter-spacing:.12em;
}
.mb-glance-heading{
    position:relative;
    z-index:1;
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:20px;
    margin-bottom:18px;
}
.mb-glance-heading span{
    color:var(--mb-teal-dark);
    font-size:11px;
    font-weight:900;
    letter-spacing:.1em;
    text-transform:uppercase;
}
.mb-glance-heading h2{
    margin:3px 0 0;
}
.mb-glance-heading > strong{
    color:var(--mb-purple-dark);
    font-size:13px;
}

/* Dashboard */
.mb-progress-dashboard{
    max-width:1180px;
    margin:0 auto;
    padding:36px 20px 70px;
    color:var(--mb-ink);
}
.mb-dashboard-hero{
    display:grid;
    grid-template-columns:1fr minmax(230px,330px);
    gap:40px;
    align-items:center;
    padding:42px;
    border:1px solid var(--mb-border);
    border-radius:28px;
    background:
        radial-gradient(circle at 90% 10%,rgba(104,48,184,.13),transparent 33%),
        radial-gradient(circle at 8% 90%,rgba(15,143,143,.13),transparent 32%),
        linear-gradient(135deg,#f5fbfb,#f8f4fc);
}
.mb-dashboard-hero img{
    display:block;
    width:100%;
    padding:16px;
    border-radius:18px;
    background:#fff;
}
.mb-dashboard-kicker{
    color:var(--mb-teal-dark);
    font-size:11px;
    font-weight:900;
    letter-spacing:.1em;
    text-transform:uppercase;
}
.mb-dashboard-hero h1{
    margin:8px 0 12px;
    color:var(--mb-purple-dark);
    font-size:clamp(38px,6vw,64px);
    line-height:1;
}
.mb-dashboard-hero p{
    max-width:690px;
    margin:0;
    color:var(--mb-muted);
    font-size:18px;
    line-height:1.6;
}
.mb-dashboard-metrics{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:15px;
    margin:24px 0;
}
.mb-dashboard-metrics article{
    padding:18px;
    border:1px solid var(--mb-border);
    border-radius:16px;
    background:#fff;
}
.mb-dashboard-metrics span,
.mb-dashboard-metrics small{
    display:block;
    color:var(--mb-muted);
}
.mb-dashboard-metrics strong{
    display:block;
    margin:5px 0 2px;
    color:var(--mb-purple-dark);
    font-size:30px;
}
.mb-resume-panel{
    display:grid;
    grid-template-columns:1fr auto;
    gap:25px;
    align-items:center;
    margin:24px 0;
    padding:26px 30px;
    border-radius:20px;
    background:linear-gradient(135deg,var(--mb-teal-dark),#075467);
    color:#fff;
}
.mb-resume-panel h2{
    margin:5px 0;
    color:#fff;
}
.mb-resume-panel p{
    margin:0;
    color:rgba(255,255,255,.82);
}
.mb-resume-panel a{
    border-radius:11px;
    padding:11px 16px;
    background:#fff;
    color:var(--mb-purple-dark);
    font-weight:900;
    text-decoration:none;
}
.mb-dashboard-section{
    margin-top:42px;
}
.mb-dashboard-heading{
    display:flex;
    justify-content:space-between;
    gap:25px;
    align-items:end;
    margin-bottom:17px;
}
.mb-dashboard-heading h2{
    margin:4px 0 0;
    color:var(--mb-purple-dark);
}
.mb-dashboard-heading p{
    max-width:430px;
    margin:0;
    color:var(--mb-muted);
}
.mb-milestone-grid{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:15px;
}
.mb-milestone-grid article{
    padding:20px;
    border:1px solid var(--mb-border);
    border-radius:17px;
    background:#f5f7f8;
    opacity:.48;
}
.mb-milestone-grid article.is-earned{
    background:linear-gradient(145deg,#f0faf6,#f7f1fc);
    opacity:1;
    box-shadow:0 12px 25px rgba(36,50,61,.08);
}
.mb-milestone-grid span{
    display:flex;
    width:48px;
    height:48px;
    align-items:center;
    justify-content:center;
    margin-bottom:12px;
    border-radius:50%;
    background:linear-gradient(135deg,var(--mb-teal),var(--mb-purple));
    color:#fff;
    font-weight:900;
}
.mb-milestone-grid strong,
.mb-milestone-grid small{
    display:block;
}
.mb-milestone-grid strong{
    color:var(--mb-purple-dark);
}
.mb-milestone-grid small{
    margin-top:4px;
    color:var(--mb-muted);
}
.mb-section-progress-grid{
    display:grid;
    gap:22px;
}
.mb-dashboard-section-card{
    padding:24px;
    border:1px solid var(--mb-border);
    border-radius:20px;
    background:#fff;
}
.mb-dashboard-section-title{
    display:flex;
    justify-content:space-between;
    gap:20px;
    align-items:end;
}
.mb-dashboard-section-title span{
    color:var(--mb-teal-dark);
    font-size:10px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-dashboard-section-title h3{
    margin:4px 0 0;
    color:var(--mb-purple-dark);
}
.mb-dashboard-section-title > strong{
    color:var(--mb-teal-dark);
}
.mb-dashboard-progress-track{
    height:11px;
    margin:15px 0 18px;
    overflow:hidden;
    border-radius:999px;
    background:#e5ecee;
}
.mb-dashboard-progress-track span{
    display:block;
    height:100%;
    border-radius:999px;
    background:linear-gradient(90deg,var(--mb-teal),var(--mb-purple));
    transition:width .3s ease;
}
.mb-dashboard-lesson-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:10px;
}
.mb-dashboard-lesson{
    display:flex;
    align-items:center;
    gap:11px;
    min-height:52px;
    padding:10px 13px;
    border:1px solid var(--mb-border);
    border-radius:12px;
    background:#fafcfc;
    color:var(--mb-ink);
    text-decoration:none;
}
.mb-dashboard-lesson:hover{
    border-color:var(--mb-purple);
}
.mb-dashboard-lesson.is-complete{
    border-color:#75af93;
    background:#f0faf5;
}
.mb-lesson-state{
    display:flex;
    width:28px;
    height:28px;
    flex:0 0 28px;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:var(--mb-purple-light);
    color:var(--mb-purple-dark);
    font-weight:900;
}
.mb-dashboard-lesson.is-complete .mb-lesson-state{
    background:#2f7d5b;
    color:#fff;
}
.mb-favorite-dashboard-card small{
    display:block;
    margin-top:3px;
    color:var(--mb-muted);
}
.mb-dashboard-empty{
    color:var(--mb-muted);
}

@media(max-width:850px){
    .mb-dashboard-hero{
        grid-template-columns:1fr;
    }
    .mb-dashboard-hero img{
        max-width:330px;
    }
    .mb-dashboard-metrics,
    .mb-milestone-grid{
        grid-template-columns:repeat(2,minmax(0,1fr));
    }
}
@media(max-width:620px){
    .mb-progress-dashboard{
        padding:20px 12px 50px;
    }
    .mb-dashboard-hero{
        padding:26px 20px;
    }
    .mb-dashboard-metrics,
    .mb-milestone-grid,
    .mb-dashboard-lesson-grid{
        grid-template-columns:1fr;
    }
    .mb-resume-panel{
        grid-template-columns:1fr;
    }
    .mb-dashboard-heading{
        align-items:start;
        flex-direction:column;
    }
}

@media print{
    .mb-lesson-tools,
    .mb-sticky-section-nav,
    #mb-official-site-footer,
    .site-header,
    header.site-header,
    #wpadminbar{
        display:none !important;
    }
    .mb-collapsible-content[hidden]{
        display:block !important;
    }
    .mb-page-wrap{
        width:100% !important;
        max-width:none !important;
        padding:0 !important;
    }
}


/* MathBinder 14.0 — Interactive Student Workbook */
.mb-workbook-section{
    border-top:8px solid var(--mb-purple);
    background:
        linear-gradient(90deg,rgba(104,48,184,.035),transparent 42%),
        #fff;
}
.mb-workbook-intro{
    display:flex;
    justify-content:space-between;
    gap:25px;
    align-items:start;
    margin-bottom:20px;
}
.mb-workbook-kicker,
.mb-workbook-card-label{
    color:var(--mb-teal-dark);
    font-size:10px;
    font-weight:900;
    letter-spacing:.09em;
    text-transform:uppercase;
}
.mb-workbook-intro h3{
    margin:5px 0;
    color:var(--mb-purple-dark);
}
.mb-workbook-intro p{
    margin:0;
    color:var(--mb-muted);
}
.mb-workbook-save-state{
    border-radius:999px;
    padding:6px 10px;
    background:#eef3f4;
    color:var(--mb-muted);
    font-size:11px;
    font-weight:850;
}
.mb-workbook-save-state.is-saved{
    background:#e8f7ef;
    color:#2f7d5b;
}
.mb-workbook-grid{
    display:grid;
    grid-template-columns:1.35fr 1fr;
    gap:16px;
}
.mb-workbook-card{
    padding:20px;
    border:1px solid var(--mb-border);
    border-radius:17px;
    background:#fff;
    box-shadow:0 9px 22px rgba(36,50,61,.045);
}
.mb-workbook-notes-card{
    grid-row:span 2;
}
.mb-workbook-card-heading{
    display:flex;
    justify-content:space-between;
    gap:20px;
    align-items:start;
    margin-bottom:13px;
}
.mb-workbook-card-heading span{
    color:var(--mb-teal-dark);
    font-size:11px;
    font-weight:900;
    text-transform:uppercase;
}
.mb-workbook-card h3,
.mb-workbook-card-heading h3{
    margin:4px 0 12px;
    color:var(--mb-purple-dark);
}
.mb-workbook-card-heading strong{
    color:var(--mb-muted);
    font-size:11px;
}
.mb-student-notes{
    width:100%;
    min-height:280px;
    resize:vertical;
    box-sizing:border-box;
    border:1px solid #cfdcdf;
    border-radius:13px;
    padding:16px;
    background:
        repeating-linear-gradient(
            to bottom,
            #fff 0,
            #fff 30px,
            rgba(15,143,143,.12) 31px
        );
    color:var(--mb-ink);
    font:inherit;
    line-height:31px;
}
.mb-note-actions{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:13px;
}
.mb-note-actions button,
.mb-save-reflection{
    border:0;
    border-radius:9px;
    padding:9px 12px;
    background:var(--mb-purple);
    color:#fff;
    font-weight:850;
    cursor:pointer;
}
.mb-note-actions .mb-download-notes{
    background:var(--mb-teal);
}
.mb-note-actions .mb-clear-notes{
    background:#eef2f3;
    color:var(--mb-muted);
}
.mb-confidence-options{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:9px;
}
.mb-confidence-options button{
    display:flex;
    align-items:center;
    gap:9px;
    border:1px solid var(--mb-border);
    border-radius:11px;
    padding:10px;
    background:#fff;
    color:var(--mb-ink);
    text-align:left;
    cursor:pointer;
}
.mb-confidence-options button span{
    display:flex;
    width:28px;
    height:28px;
    flex:0 0 28px;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:var(--mb-purple-light);
    color:var(--mb-purple-dark);
    font-weight:900;
}
.mb-confidence-options button.is-selected{
    border-color:var(--mb-purple);
    background:#f7f1fc;
}
.mb-confidence-options button.is-selected span{
    background:linear-gradient(135deg,var(--mb-purple),var(--mb-teal));
    color:#fff;
}
.mb-confidence-message{
    min-height:44px;
    margin-top:12px;
    color:var(--mb-teal-dark);
    font-weight:750;
    line-height:1.45;
}
.mb-workbook-card label{
    display:block;
    margin-top:12px;
    color:var(--mb-teal-dark);
    font-size:12px;
    font-weight:800;
}
.mb-workbook-card input[type="text"]{
    width:100%;
    box-sizing:border-box;
    margin-top:5px;
    border:1px solid #cfdcdf;
    border-radius:9px;
    padding:10px 11px;
    color:var(--mb-ink);
    font:inherit;
}

.mb-dashboard-lesson span:last-child{
    display:block;
}
.mb-dashboard-lesson span:last-child small{
    display:block;
    margin-top:2px;
    color:var(--mb-muted);
    font-size:10px;
    font-weight:750;
}
.mb-dashboard-lesson.is-in-progress{
    border-color:#c29c37;
    background:#fff9e9;
}
.mb-dashboard-lesson.is-in-progress .mb-lesson-state{
    background:#c29c37;
    color:#fff;
}
.mb-dashboard-lesson.is-not-started{
    background:#fafcfc;
}

@media(max-width:800px){
    .mb-workbook-grid{
        grid-template-columns:1fr;
    }
    .mb-workbook-notes-card{
        grid-row:auto;
    }
}
@media(max-width:520px){
    .mb-workbook-intro{
        flex-direction:column;
    }
    .mb-confidence-options{
        grid-template-columns:1fr;
    }
}
@media print{
    .mb-workbook-section{
        display:none !important;
    }
}


/* MathBinder 15.0 — My Math Journal */
.mb-journal-status-wrap{
    display:flex;
    flex-direction:column;
    gap:6px;
    align-items:flex-end;
}
.mb-device-save-note{
    color:var(--mb-muted);
    font-size:11px;
    font-weight:750;
}
.mb-journal-toolbar{
    display:flex;
    flex-wrap:wrap;
    gap:9px;
    margin:0 0 18px;
}
.mb-journal-toolbar button{
    border:0;
    border-radius:10px;
    padding:9px 13px;
    background:var(--mb-purple);
    color:#fff;
    font-weight:850;
    cursor:pointer;
}
.mb-journal-toolbar .mb-download-notes{
    background:var(--mb-teal);
}
.mb-journal-toolbar .mb-clear-journal{
    background:#eef2f3;
    color:var(--mb-muted);
}
.mb-journal-layout{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:16px;
}
.mb-journal-confidence,
.mb-journal-reflection,
.mb-journal-notes-card{
    padding:20px;
    border:1px solid var(--mb-border);
    border-radius:17px;
    background:#fff;
    box-shadow:0 9px 22px rgba(36,50,61,.045);
}
.mb-journal-notes-card{
    grid-column:1 / -1;
}
.mb-confidence-options{
    grid-template-columns:repeat(2,minmax(0,1fr)) !important;
}
.mb-confidence-options button{
    min-height:94px;
    align-items:flex-start !important;
    flex-direction:column;
    gap:4px !important;
    padding:13px !important;
}
.mb-confidence-options button .mb-confidence-emoji{
    width:auto !important;
    height:auto !important;
    flex:0 0 auto !important;
    border-radius:0 !important;
    background:transparent !important;
    font-size:25px;
}
.mb-confidence-options button strong{
    color:var(--mb-purple-dark);
}
.mb-confidence-options button small{
    color:var(--mb-muted);
    font-size:11px;
}
.mb-confidence-options button.is-selected{
    transform:translateY(-1px);
    box-shadow:0 8px 18px rgba(83,38,154,.10);
}
.mb-reflection-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:12px;
}
.mb-sticky-note{
    display:block;
    min-height:190px;
    padding:15px !important;
    border:0 !important;
    border-radius:4px !important;
    box-shadow:0 7px 16px rgba(36,50,61,.12);
    transform:rotate(-.5deg);
}
.mb-sticky-note:nth-child(2){
    transform:rotate(.6deg);
}
.mb-sticky-note:nth-child(3){
    transform:rotate(-.2deg);
}
.mb-sticky-note > span{
    display:block;
    margin-bottom:9px;
    color:var(--mb-purple-dark);
    font-weight:900;
}
.mb-sticky-note textarea{
    width:100%;
    min-height:125px;
    resize:vertical;
    box-sizing:border-box;
    border:0;
    border-top:1px solid rgba(36,50,61,.12);
    padding:10px 2px 2px;
    background:transparent;
    color:var(--mb-ink);
    font:inherit;
    line-height:1.5;
}
.mb-sticky-note textarea:focus{
    outline:2px solid rgba(104,48,184,.22);
    outline-offset:3px;
}
.mb-sticky-yellow{background:#fff5ae}
.mb-sticky-blue{background:#dff1ff}
.mb-sticky-green{background:#def2df}

.mb-notebook-paper-wrap{
    position:relative;
    overflow:hidden;
    border:1px solid #cfdcdf;
    border-radius:14px;
    background:#fffdf7;
}
.mb-notebook-paper-wrap::before{
    content:"";
    position:absolute;
    top:0;
    bottom:0;
    left:48px;
    width:2px;
    background:rgba(213,84,84,.30);
    pointer-events:none;
    z-index:1;
}
.mb-student-notes{
    position:relative;
    z-index:2;
    min-height:360px !important;
    border:0 !important;
    border-radius:0 !important;
    padding:12px 18px 12px 66px !important;
    background:
        repeating-linear-gradient(
            to bottom,
            transparent 0,
            transparent 30px,
            rgba(72,149,190,.20) 31px
        ),
        #fffdf7 !important;
    line-height:31px !important;
}
.mb-student-notes:focus{
    outline:3px solid rgba(104,48,184,.12);
    outline-offset:-3px;
}
.mb-journal-privacy{
    margin:15px 0 0;
    color:var(--mb-muted);
    font-size:11px;
    line-height:1.5;
}

@media(max-width:900px){
    .mb-journal-layout{
        grid-template-columns:1fr;
    }
    .mb-journal-notes-card{
        grid-column:auto;
    }
    .mb-reflection-grid{
        grid-template-columns:1fr;
    }
}
@media(max-width:560px){
    .mb-confidence-options{
        grid-template-columns:1fr !important;
    }
    .mb-journal-status-wrap{
        align-items:flex-start;
    }
}
@media print{
    .mb-journal-toolbar{
        display:none !important;
    }
}


/* MathBinder 15.1 — journal polish */
.mb-journal-privacy{
    padding:12px 14px;
    border-radius:10px;
    background:#f6f9fa;
    color:var(--mb-muted);
}
.mb-journal-privacy strong{
    color:var(--mb-teal-dark);
}
.mb-journal-celebration{
    margin-top:12px;
    border-radius:14px;
    padding:13px 15px;
    background:linear-gradient(135deg,#fff7c9,#f4ecff);
    color:var(--mb-purple-dark);
    box-shadow:0 10px 24px rgba(83,38,154,.12);
    transform:scale(.96);
    opacity:0;
}
.mb-journal-celebration span{
    display:inline-block;
    margin-right:8px;
    font-size:22px;
}
.mb-journal-celebration.is-showing{
    animation:mb-journal-celebrate .65s ease forwards;
}
@keyframes mb-journal-celebrate{
    0%{opacity:0;transform:scale(.94) translateY(6px)}
    55%{opacity:1;transform:scale(1.03) translateY(0)}
    100%{opacity:1;transform:scale(1)}
}


/* MathBinder 16.0 — Add to Your Binder */
.mb-binder-resources{
    border-top:8px solid var(--mb-teal);
    background:
        linear-gradient(90deg,rgba(15,143,143,.035),transparent 46%),
        #fff;
}
.mb-resource-intro{
    margin-bottom:20px;
}
.mb-resource-kicker{
    color:var(--mb-teal-dark);
    font-size:10px;
    font-weight:900;
    letter-spacing:.1em;
    text-transform:uppercase;
}
.mb-resource-intro h3{
    margin:5px 0 7px;
    color:var(--mb-purple-dark);
}
.mb-resource-intro p{
    max-width:760px;
    margin:0;
    color:var(--mb-muted);
    line-height:1.55;
}
.mb-binder-resource-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:16px;
}
.mb-binder-resource-card{
    position:relative;
    min-height:230px;
    display:flex;
    flex-direction:column;
    gap:14px;
    padding:22px;
    border:1px solid var(--mb-border);
    border-radius:18px;
    background:#fff;
    box-shadow:0 10px 24px rgba(36,50,61,.055);
    overflow:hidden;
}
.mb-binder-resource-card::after{
    content:"";
    position:absolute;
    right:-26px;
    bottom:-30px;
    width:110px;
    height:110px;
    border-radius:50%;
    background:rgba(104,48,184,.045);
}
.mb-resource-notes{border-top:5px solid #6d44b8}
.mb-resource-practice{border-top:5px solid #0f8f8f}
.mb-resource-challenge{border-top:5px solid #d29a1f}
.mb-resource-support{border-top:5px solid #2f7d5b}

.mb-resource-icon{
    display:flex;
    width:48px;
    height:48px;
    align-items:center;
    justify-content:center;
    border-radius:14px;
    background:linear-gradient(135deg,#f0fbfb,#f4edfc);
    font-size:24px;
}
.mb-resource-copy{
    position:relative;
    z-index:1;
}
.mb-resource-copy span{
    color:var(--mb-teal-dark);
    font-size:10px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-resource-copy h3{
    margin:5px 0 7px;
    color:var(--mb-purple-dark);
}
.mb-resource-copy p{
    margin:0;
    color:var(--mb-muted);
    line-height:1.5;
}
.mb-binder-resource-card > a,
.mb-resource-status{
    position:relative;
    z-index:1;
    width:max-content;
    margin-top:auto;
    border-radius:10px;
    padding:9px 13px;
    font-size:12px;
    font-weight:900;
}
.mb-binder-resource-card > a{
    background:var(--mb-purple);
    color:#fff !important;
    text-decoration:none !important;
}
.mb-resource-practice > a{background:var(--mb-teal)}
.mb-resource-support > a{background:#2f7d5b}
.mb-resource-status{
    background:#eef2f3;
    color:var(--mb-muted);
    text-transform:uppercase;
    letter-spacing:.04em;
}
.mb-binder-tip{
    display:flex;
    gap:12px;
    align-items:flex-start;
    margin-top:18px;
    padding:15px 17px;
    border-radius:13px;
    background:linear-gradient(135deg,#f4fbfb,#faf6fd);
}
.mb-binder-tip span{
    font-size:22px;
}
.mb-binder-tip p{
    margin:0;
    color:var(--mb-muted);
}
.mb-binder-tip strong{
    color:var(--mb-teal-dark);
}

@media(max-width:760px){
    .mb-binder-resource-grid{
        grid-template-columns:1fr;
    }
}


/* MathBinder 17.0 — Resource collection and Your Binder */
.mb-view-binder-link{
    display:inline-flex;
    margin-top:12px;
    border-radius:10px;
    padding:9px 13px;
    background:var(--mb-teal-dark);
    color:#fff !important;
    font-size:12px;
    font-weight:900;
    text-decoration:none !important;
}
.mb-resource-preview{
    display:flex;
    flex-wrap:wrap;
    gap:6px;
    margin:12px 0 0;
    padding:0;
    list-style:none;
}
.mb-resource-preview li{
    border-radius:999px;
    padding:5px 8px;
    background:#f1f5f6;
    color:var(--mb-muted);
    font-size:10px;
    font-weight:800;
}
.mb-binder-resource-card.is-collected{
    border-color:#79aa91;
    background:linear-gradient(145deg,#f3fbf7,#fff);
}
.mb-in-binder-badge{
    position:absolute;
    top:16px;
    right:16px;
    z-index:2;
    border-radius:999px;
    padding:5px 8px;
    background:#2f7d5b;
    color:#fff;
    font-size:10px;
    font-weight:900;
}
.mb-binder-resource-card > a.is-collected-action{
    background:#2f7d5b !important;
}

/* Your Binder page */
.mb-collection-dashboard{
    max-width:1180px;
    margin:0 auto;
    padding:36px 20px 70px;
}
.mb-my-mathbinder-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,360px);gap:32px;align-items:center;padding:36px 40px;border:1px solid var(--mb-border);border-radius:26px;background:radial-gradient(circle at 90% 10%,rgba(104,48,184,.14),transparent 36%),radial-gradient(circle at 8% 90%,rgba(15,143,143,.13),transparent 34%),linear-gradient(135deg,#f3fbfb,#f8f4fc);box-shadow:0 16px 38px rgba(37,49,61,.08)}
.mb-my-mathbinder-hero h1{margin:7px 0 10px;color:var(--mb-purple-dark);font-size:clamp(40px,6vw,64px);line-height:1.02}.mb-my-mathbinder-hero p{max-width:700px;margin:0;color:var(--mb-muted);font-size:17px;line-height:1.55}
.mb-my-mathbinder-brand{display:flex;align-items:center;justify-content:center;gap:20px;min-height:190px;padding:20px;border-radius:20px;background:rgba(255,255,255,.72)}.mb-my-mathbinder-brand img{width:min(190px,58%);height:auto}.mb-my-mathbinder-brand div{display:grid;text-align:center}.mb-my-mathbinder-brand strong{color:var(--mb-purple-dark);font-size:38px}.mb-my-mathbinder-brand span{color:var(--mb-muted);font-size:12px;font-weight:900;text-transform:uppercase}
.mb-my-binder-controls{display:grid;grid-template-columns:minmax(260px,1fr) 2fr;gap:18px;align-items:end;margin:24px 0;padding:20px;border:1px solid var(--mb-border);border-radius:18px;background:#fff;box-shadow:0 8px 22px rgba(37,49,61,.05)}.mb-my-binder-controls label{display:grid;gap:7px;color:var(--mb-ink);font-weight:800}.mb-my-binder-controls input{width:100%;min-height:44px;box-sizing:border-box;padding:9px 12px;border:1px solid #bfcbd2;border-radius:10px;font:inherit}
.mb-my-binder-filters{display:flex;flex-wrap:wrap;gap:8px}.mb-my-binder-filters button,.mb-my-binder-filters a{display:inline-flex;align-items:center;min-height:40px;padding:8px 12px;border:1px solid #cfc4e8;border-radius:999px;background:#fff;color:var(--mb-purple-dark);font:inherit;font-size:13px;font-weight:800;cursor:pointer;text-decoration:none}.mb-my-binder-filters button.is-active{border-color:var(--mb-purple);background:var(--mb-purple);color:#fff}.mb-my-binder-filters a:hover,.mb-my-binder-filters a:focus-visible{border-color:var(--mb-teal);background:var(--mb-teal-soft);color:var(--mb-teal-dark)}
.mb-my-binder-recent,.mb-my-binder-sections{margin-top:28px;padding:24px;border:1px solid var(--mb-border);border-radius:20px;background:#fff}.mb-my-binder-recent .mb-dashboard-heading,.mb-my-binder-sections .mb-dashboard-heading{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:18px}.mb-my-binder-recent h2,.mb-my-binder-sections h2{margin:4px 0 0;color:var(--mb-purple-dark);font-size:30px}.mb-my-binder-sections .mb-dashboard-heading>p{margin:0;color:var(--mb-muted)}
.mb-my-binder-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.mb-my-binder-card{padding:18px;border:1px solid var(--mb-border);border-top:6px solid var(--mb-teal);border-radius:15px;background:#fafcfc}.mb-my-binder-card h3{margin:7px 0;color:var(--mb-purple-dark)}.mb-my-binder-type{color:var(--mb-teal-dark);font-size:10px;font-weight:900;text-transform:uppercase}.mb-my-binder-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.mb-my-binder-actions a,.mb-my-binder-actions button{padding:8px 11px;border:0;border-radius:9px;background:var(--mb-purple);color:#fff!important;font-weight:800;text-decoration:none!important}
.mb-my-binder-empty{display:grid;place-items:center;min-height:260px;padding:32px;text-align:center;border:2px dashed #cfc4e8;border-radius:18px;background:#faf8ff}.mb-my-binder-empty>div{display:grid;place-items:center;width:54px;height:54px;border-radius:50%;background:var(--mb-purple-light);color:var(--mb-purple-dark);font-size:30px}.mb-my-binder-empty h2{margin:12px 0 4px}.mb-my-binder-empty p{max-width:650px;margin:0 0 15px;color:var(--mb-muted)}.mb-my-binder-empty a{padding:10px 14px;border-radius:10px;background:var(--mb-teal);color:#fff!important;font-weight:900;text-decoration:none!important}
@media(max-width:900px){.mb-my-mathbinder-hero{grid-template-columns:1fr}.mb-my-mathbinder-brand{min-height:140px}.mb-my-binder-controls{grid-template-columns:1fr}.mb-my-binder-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.mb-my-mathbinder-hero{padding:26px 20px}.mb-my-binder-card-grid{grid-template-columns:1fr}.mb-my-binder-recent .mb-dashboard-heading,.mb-my-binder-sections .mb-dashboard-heading{align-items:flex-start;flex-direction:column}}
.mb-collection-hero{
    display:grid;
    grid-template-columns:1fr minmax(300px,430px);
    gap:36px;
    align-items:center;
    padding:42px;
    border:1px solid var(--mb-border);
    border-radius:28px;
    background:
        radial-gradient(circle at 92% 8%,rgba(104,48,184,.13),transparent 34%),
        radial-gradient(circle at 8% 90%,rgba(15,143,143,.13),transparent 31%),
        linear-gradient(135deg,#f4fbfb,#f8f4fc);
}
.mb-collection-kicker{
    color:var(--mb-teal-dark);
    font-size:11px;
    font-weight:900;
    letter-spacing:.1em;
    text-transform:uppercase;
}
.mb-collection-hero h1{
    margin:7px 0 12px;
    color:var(--mb-purple-dark);
    font-size:clamp(40px,6vw,66px);
    line-height:1;
}
.mb-collection-hero p{
    margin:0;
    color:var(--mb-muted);
    font-size:18px;
    line-height:1.55;
}
.mb-collection-hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:9px;
    margin-top:20px;
}
.mb-collection-hero-actions a{
    border-radius:10px;
    padding:10px 14px;
    background:var(--mb-purple);
    color:#fff !important;
    font-weight:900;
    text-decoration:none !important;
}
.mb-collection-hero-actions a:last-child{
    background:var(--mb-teal);
}
.mb-collection-visual{
    position:relative;
    min-height:250px;
    display:flex;
    align-items:center;
    justify-content:center;
}
.mb-binder-cover{
    position:relative;
    z-index:2;
    width:250px;
    height:195px;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    border-radius:16px 8px 8px 16px;
    background:linear-gradient(145deg,#0f8f8f,#075467);
    color:#fff;
    box-shadow:18px 20px 30px rgba(36,50,61,.18);
}
.mb-binder-cover strong{
    font-size:34px;
}
.mb-binder-cover small{
    margin-top:6px;
}
.mb-binder-spine{
    position:absolute;
    left:45px;
    width:34px;
    height:220px;
    border-radius:16px;
    background:#0a6e72;
    box-shadow:inset -8px 0 12px rgba(0,0,0,.12);
}
.mb-binder-tabs{
    position:absolute;
    right:22px;
    top:32px;
    display:flex;
    flex-direction:column;
    gap:5px;
}
.mb-binder-tabs span{
    min-width:94px;
    border-radius:0 8px 8px 0;
    padding:7px 10px;
    color:#fff;
    font-size:11px;
    font-weight:900;
}
.mb-binder-tabs span:nth-child(1){background:#6d44b8}
.mb-binder-tabs span:nth-child(2){background:#0f8f8f}
.mb-binder-tabs span:nth-child(3){background:#d29a1f}
.mb-binder-tabs span:nth-child(4){background:#2f7d5b}

.mb-collection-summary{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:15px;
    margin:24px 0;
}
.mb-collection-summary article{
    padding:18px;
    border:1px solid var(--mb-border);
    border-radius:16px;
    background:#fff;
}
.mb-collection-summary span,
.mb-collection-summary small{
    display:block;
    color:var(--mb-muted);
}
.mb-collection-summary strong{
    display:block;
    margin:5px 0 2px;
    color:var(--mb-purple-dark);
    font-size:30px;
}
.mb-collection-progress-card{
    display:grid;
    grid-template-columns:1fr minmax(280px,520px);
    gap:28px;
    align-items:center;
    padding:24px 28px;
    border-radius:20px;
    background:linear-gradient(135deg,var(--mb-teal-dark),#075467);
    color:#fff;
}
.mb-collection-progress-card h2{
    margin:5px 0;
    color:#fff;
}
.mb-collection-progress-card p{
    margin:0;
    color:rgba(255,255,255,.80);
}
.mb-collection-progress-track{
    height:14px;
    overflow:hidden;
    border-radius:999px;
    background:rgba(255,255,255,.22);
}
.mb-collection-progress-track span{
    display:block;
    height:100%;
    border-radius:999px;
    background:linear-gradient(90deg,#fff,#c8b2f2);
    transition:width .3s ease;
}
.mb-collection-sections{
    display:grid;
    gap:22px;
    margin-top:36px;
}
.mb-collection-section{
    padding:24px;
    border:1px solid var(--mb-border);
    border-radius:20px;
    background:#fff;
}
.mb-collection-section-heading{
    display:flex;
    justify-content:space-between;
    gap:20px;
    align-items:end;
    margin-bottom:16px;
}
.mb-collection-section-heading span{
    color:var(--mb-teal-dark);
    font-size:10px;
    font-weight:900;
    letter-spacing:.09em;
    text-transform:uppercase;
}
.mb-collection-section-heading h2{
    margin:4px 0 0;
    color:var(--mb-purple-dark);
}
.mb-collection-section-heading strong{
    color:var(--mb-teal-dark);
}
.mb-collection-lesson-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:12px;
}
.mb-collection-lesson{
    padding:14px;
    border:1px solid var(--mb-border);
    border-radius:14px;
    background:#fafcfc;
}
.mb-collection-lesson.has-resources{
    border-color:#a8cbb8;
    background:#f6fbf8;
}
.mb-collection-lesson.is-complete-collection{
    border-color:#2f7d5b;
    box-shadow:0 9px 20px rgba(47,125,91,.10);
}
.mb-collection-lesson-heading{
    display:flex;
    justify-content:space-between;
    gap:14px;
    align-items:center;
}
.mb-collection-lesson-heading a{
    color:var(--mb-purple-dark);
    font-weight:900;
    text-decoration:none;
}
.mb-collection-lesson-heading span{
    color:var(--mb-muted);
    font-size:11px;
    font-weight:850;
}
.mb-collection-resource-row{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:7px;
    margin-top:11px;
}
.mb-collection-resource-row span{
    border-radius:8px;
    padding:7px 8px;
    background:#eef2f3;
    color:#7b878e;
    font-size:10px;
    font-weight:800;
}
.mb-collection-resource-row span.is-collected{
    background:#e6f5ec;
    color:#2f7d5b;
}
.mb-collection-empty{
    color:var(--mb-muted);
}

@media(max-width:900px){
    .mb-collection-hero{
        grid-template-columns:1fr;
    }
    .mb-collection-visual{
        max-width:500px;
    }
    .mb-collection-summary{
        grid-template-columns:repeat(2,minmax(0,1fr));
    }
    .mb-collection-progress-card{
        grid-template-columns:1fr;
    }
}
@media(max-width:680px){
    .mb-collection-dashboard{
        padding:20px 12px 50px;
    }
    .mb-collection-hero{
        padding:26px 20px;
    }
    .mb-collection-summary,
    .mb-collection-lesson-grid{
        grid-template-columns:1fr;
    }
    .mb-collection-section-heading{
        align-items:start;
        flex-direction:column;
    }
}


/* MathBinder 18.0 — Gold Standard Learn It */
.mb-gold-learn{
    border-top:8px solid var(--mb-purple);
    background:
        linear-gradient(90deg,rgba(104,48,184,.025),transparent 48%),
        #fff;
}
.mb-learn-kicker{
    color:var(--mb-teal-dark);
    font-size:10px;
    font-weight:900;
    letter-spacing:.1em;
    text-transform:uppercase;
}
.mb-learn-intro-grid{
    display:grid;
    grid-template-columns:1.2fr .8fr;
    gap:22px;
    align-items:start;
    margin-bottom:22px;
}
.mb-learn-opening{
    font-size:17px;
    line-height:1.7;
}
.mb-place-value-model{
    padding:18px;
    border:1px solid var(--mb-border);
    border-radius:17px;
    background:linear-gradient(145deg,#f5fbfb,#f8f4fc);
}
.mb-model-label{
    color:var(--mb-teal-dark);
    font-size:10px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-place-value-number{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:7px;
    margin:12px 0;
}
.mb-place-value-number > span{
    display:flex;
    min-height:88px;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    border-radius:12px;
    background:#fff;
    color:var(--mb-purple-dark);
    font-size:29px;
    font-weight:900;
    box-shadow:0 7px 17px rgba(36,50,61,.07);
}
.mb-place-value-number small{
    margin-top:4px;
    color:var(--mb-muted);
    font-size:9px;
    font-weight:800;
    text-transform:uppercase;
}
.mb-place-value-model p{
    margin:0;
    color:var(--mb-teal-dark);
    font-weight:850;
    text-align:center;
}
.mb-learn-block{
    margin-top:22px;
    padding:20px;
    border:1px solid var(--mb-border);
    border-radius:18px;
    background:#fff;
}
.mb-learn-block-heading{
    display:flex;
    gap:12px;
    align-items:center;
    margin-bottom:16px;
}
.mb-learn-block-heading > span{
    display:flex;
    width:42px;
    height:42px;
    align-items:center;
    justify-content:center;
    border-radius:13px;
    background:linear-gradient(135deg,#eefafa,#f3edfb);
    font-size:21px;
}
.mb-learn-block-heading small{
    color:var(--mb-teal-dark);
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-learn-block-heading h3{
    margin:2px 0 0;
    color:var(--mb-purple-dark);
}
.mb-vocab-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:10px;
}
.mb-vocab-card{
    border:1px solid var(--mb-border);
    border-radius:13px;
    overflow:hidden;
}
.mb-vocab-toggle{
    width:100%;
    display:grid;
    grid-template-columns:30px 1fr auto;
    gap:10px;
    align-items:center;
    border:0;
    padding:12px;
    background:#fafcfc;
    color:var(--mb-ink);
    font:inherit;
    font-weight:850;
    text-align:left;
    cursor:pointer;
}
.mb-vocab-index{
    display:flex;
    width:28px;
    height:28px;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:var(--mb-purple-light);
    color:var(--mb-purple-dark);
    font-size:11px;
    font-weight:900;
}
.mb-vocab-plus{
    color:var(--mb-purple);
    font-size:20px;
}
.mb-vocab-definition{
    padding:12px 14px 15px 52px;
    border-top:1px solid var(--mb-border);
    background:#fff;
}
.mb-vocab-definition p{
    margin:0;
    color:var(--mb-muted);
}
.mb-step-example-list{
    display:grid;
    gap:15px;
}
.mb-step-example{
    padding:18px;
    border:1px solid var(--mb-border);
    border-radius:15px;
    background:#fbfdfd;
}
.mb-step-example-heading span{
    color:var(--mb-teal-dark);
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-step-example-heading h4{
    margin:4px 0 14px;
    color:var(--mb-purple-dark);
}
.mb-step-example-steps{
    display:grid;
    gap:8px;
}
.mb-example-step{
    display:grid;
    grid-template-columns:34px 1fr;
    gap:10px;
    align-items:start;
    padding:10px;
    border-radius:11px;
    background:#fff;
}
.mb-example-step > span{
    display:flex;
    width:30px;
    height:30px;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:var(--mb-teal-light);
    color:var(--mb-teal-dark);
    font-weight:900;
}
.mb-example-step p{
    margin:4px 0 0;
}
.mb-show-next-step{
    margin-top:12px;
    border:0;
    border-radius:9px;
    padding:8px 12px;
    background:var(--mb-purple);
    color:#fff;
    font-weight:850;
    cursor:pointer;
}
.mb-show-next-step:disabled{
    background:#2f7d5b;
}
.mb-learn-checks{
    display:grid;
    gap:14px;
}
.mb-learn-check{
    padding:17px;
    border:1px solid var(--mb-border);
    border-radius:14px;
    background:#fafcfc;
}
.mb-check-label{
    color:var(--mb-teal-dark);
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-learn-check h4{
    margin:5px 0 12px;
    color:var(--mb-purple-dark);
}
.mb-learn-check-options{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:8px;
}
.mb-learn-check-options button{
    display:flex;
    align-items:center;
    gap:9px;
    border:1px solid var(--mb-border);
    border-radius:10px;
    padding:10px;
    background:#fff;
    color:var(--mb-ink);
    text-align:left;
    cursor:pointer;
}
.mb-learn-check-options button span{
    display:flex;
    width:28px;
    height:28px;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:var(--mb-purple-light);
    color:var(--mb-purple-dark);
    font-weight:900;
}
.mb-learn-check-options button.is-correct{
    border-color:#2f7d5b;
    background:#eef9f3;
}
.mb-learn-check-options button.is-incorrect{
    border-color:#b45252;
    background:#fff2f2;
}
.mb-learn-check-feedback{
    margin-top:10px;
    font-weight:800;
}
.mb-learn-check-feedback.is-correct{color:#2f7d5b}
.mb-learn-check-feedback.is-incorrect{color:#a04444}
.mb-misconception-grid{
    display:grid;
    gap:11px;
}
.mb-misconception-card{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:10px;
}
.mb-misconception-wrong,
.mb-misconception-correct{
    display:grid;
    grid-template-columns:28px 1fr;
    gap:9px;
    align-items:start;
    padding:12px;
    border-radius:12px;
}
.mb-misconception-wrong{background:#fff2f2}
.mb-misconception-correct{background:#eef9f3}
.mb-misconception-wrong span,
.mb-misconception-correct span{
    display:flex;
    width:26px;
    height:26px;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    color:#fff;
    font-weight:900;
}
.mb-misconception-wrong span{background:#b45252}
.mb-misconception-correct span{background:#2f7d5b}
.mb-misconception-card p{
    margin:3px 0 0;
}
.mb-did-you-know,
.mb-gold-real-life{
    display:flex;
    gap:13px;
    align-items:flex-start;
    margin-top:18px;
    padding:17px;
    border-radius:15px;
}
.mb-did-you-know{
    background:linear-gradient(135deg,#fff8cf,#f7f0ff);
}
.mb-gold-real-life{
    background:linear-gradient(135deg,#eef9f4,#eef8fb);
}
.mb-did-you-know > span,
.mb-gold-real-life > span{
    font-size:24px;
}
.mb-did-you-know strong,
.mb-gold-real-life h3{
    color:var(--mb-purple-dark);
}
.mb-did-you-know p,
.mb-gold-real-life p{
    margin:4px 0 0;
}

@media(max-width:820px){
    .mb-learn-intro-grid{
        grid-template-columns:1fr;
    }
    .mb-vocab-grid,
    .mb-learn-check-options{
        grid-template-columns:1fr;
    }
}
@media(max-width:620px){
    .mb-misconception-card{
        grid-template-columns:1fr;
    }
    .mb-place-value-number{
        grid-template-columns:repeat(2,1fr);
    }
}


/* MathBinder 18.1 — Learn It layout fixes */
.mb-learn-intro-grid.is-model-only{
    grid-template-columns:1fr;
}
.mb-learn-intro-grid.is-model-only .mb-place-value-model{
    width:min(100%,620px);
    margin-inline:auto;
}
.mb-learn-intro-copy{
    min-width:0;
}
.mb-gold-learn{
    overflow:hidden;
}
.mb-gold-learn .mb-collapsible-content{
    overflow:visible;
}
.mb-gold-learn .mb-learn-block{
    position:relative;
    clear:both;
}
.mb-gold-learn .mb-learn-block + .mb-learn-block{
    margin-top:24px;
}
.mb-gold-learn .mb-learn-block::after{
    content:"";
    display:block;
    clear:both;
}
.mb-learn-ending{
    display:grid;
    grid-template-columns:1fr;
    gap:14px;
    margin-top:24px;
    clear:both;
}
.mb-learn-callout{
    display:grid;
    grid-template-columns:52px 1fr;
    gap:16px;
    align-items:start;
    width:100%;
    box-sizing:border-box;
    padding:20px 22px;
    border:1px solid var(--mb-border);
    border-radius:16px;
    position:relative;
    overflow:hidden;
}
.mb-learn-callout::after{
    content:"";
    position:absolute;
    right:-34px;
    bottom:-42px;
    width:130px;
    height:130px;
    border-radius:50%;
    opacity:.35;
}
.mb-learn-callout-real{
    background:linear-gradient(135deg,#eef9f4,#f7fcfa);
    border-left:7px solid var(--mb-teal);
}
.mb-learn-callout-real::after{
    background:#d6f1e4;
}
.mb-learn-callout-fact{
    background:linear-gradient(135deg,#fff9d8,#fbf5ff);
    border-left:7px solid #d29a1f;
}
.mb-learn-callout-fact::after{
    background:#f4e7a7;
}
.mb-learn-callout-icon{
    display:flex;
    width:48px;
    height:48px;
    align-items:center;
    justify-content:center;
    border-radius:14px;
    background:rgba(255,255,255,.78);
    font-size:24px;
    position:relative;
    z-index:1;
}
.mb-learn-callout > div{
    position:relative;
    z-index:1;
}
.mb-learn-callout-kicker{
    display:block;
    margin-bottom:3px;
    color:var(--mb-teal-dark);
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-learn-callout h3{
    margin:0 0 6px;
    color:var(--mb-purple-dark);
}
.mb-learn-callout p{
    margin:0;
    color:var(--mb-ink);
    line-height:1.6;
}
.mb-gold-learn + .mb-section{
    margin-top:22px;
}
.mb-gold-learn > .mb-collapsible-content{
    padding-bottom:24px;
}
.mb-gold-learn .mb-section-header,
.mb-gold-learn .mb-section-toggle{
    position:relative;
    z-index:2;
}

@media(max-width:760px){
    .mb-learn-callout{
        grid-template-columns:1fr;
    }
    .mb-learn-callout-icon{
        width:42px;
        height:42px;
    }
}


/* MathBinder 19.0 — Gold Standard Watch It */
.mb-gold-watch{
    border-top:8px solid var(--mb-teal);
    background:
        linear-gradient(90deg,rgba(15,143,143,.025),transparent 48%),
        #fff;
}
.mb-watch-intro{
    display:flex;
    justify-content:space-between;
    gap:24px;
    align-items:start;
    margin-bottom:20px;
}
.mb-watch-kicker,
.mb-watch-panel-kicker{
    color:var(--mb-teal-dark);
    font-size:10px;
    font-weight:900;
    letter-spacing:.09em;
    text-transform:uppercase;
}
.mb-watch-intro h3{
    margin:5px 0 7px;
    color:var(--mb-purple-dark);
}
.mb-watch-intro p{
    margin:0;
    color:var(--mb-muted);
    line-height:1.55;
}
.mb-watch-status{
    display:flex;
    flex-direction:column;
    gap:8px;
    align-items:flex-end;
}
.mb-watch-status > span{
    border-radius:999px;
    padding:6px 10px;
    background:#eef2f3;
    color:var(--mb-muted);
    font-size:11px;
    font-weight:850;
}
.mb-mark-video-complete{
    border:0;
    border-radius:10px;
    padding:9px 13px;
    background:var(--mb-purple);
    color:#fff;
    font-weight:900;
    cursor:pointer;
}
.mb-gold-watch.is-watch-complete .mb-watch-status > span,
.mb-gold-watch.is-watch-complete .mb-mark-video-complete{
    background:#2f7d5b;
    color:#fff;
}
.mb-watch-studio{
    display:grid;
    grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);
    gap:18px;
}
.mb-watch-main,
.mb-watch-panel,
.mb-watch-reflection-section,
.mb-transcript-section{
    border:1px solid var(--mb-border);
    border-radius:18px;
    background:#fff;
}
.mb-watch-main{
    padding:16px;
}
.mb-featured-video{
    overflow:hidden;
    border-radius:14px;
    background:#111;
    aspect-ratio:16/9;
}
.mb-featured-video iframe,
.mb-featured-video video{
    width:100%;
    height:100%;
    border:0;
}
.mb-featured-video > a{
    display:flex;
    min-height:320px;
    align-items:center;
    justify-content:center;
    color:#fff !important;
}
.mb-watch-now-playing{
    padding:14px 3px 4px;
}
.mb-watch-now-playing span{
    color:var(--mb-teal-dark);
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-watch-now-playing h3{
    margin:4px 0 0;
    color:var(--mb-purple-dark);
}
.mb-video-playlist{
    display:grid;
    gap:8px;
    margin-top:12px;
}
.mb-video-playlist a{
    display:grid;
    grid-template-columns:30px 1fr;
    gap:9px;
    align-items:center;
    border:1px solid var(--mb-border);
    border-radius:10px;
    padding:9px;
    color:var(--mb-ink) !important;
    text-decoration:none !important;
}
.mb-video-playlist a.is-current{
    border-color:var(--mb-purple);
    background:#f7f2fc;
}
.mb-video-playlist a span{
    display:flex;
    width:28px;
    height:28px;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:var(--mb-purple-light);
    color:var(--mb-purple-dark);
    font-weight:900;
}
.mb-watch-sidebar{
    display:grid;
    gap:14px;
    align-content:start;
}
.mb-watch-panel{
    padding:17px;
}
.mb-watch-panel h3{
    margin:5px 0 13px;
    color:var(--mb-purple-dark);
}
.mb-video-chapters{
    display:grid;
    gap:7px;
}
.mb-video-chapter{
    display:grid;
    grid-template-columns:48px 1fr;
    gap:10px;
    align-items:center;
    border:1px solid var(--mb-border);
    border-radius:10px;
    padding:9px;
    background:#fafcfc;
    color:var(--mb-ink);
    text-align:left;
    cursor:pointer;
}
.mb-video-chapter span{
    color:var(--mb-purple);
    font-size:11px;
    font-weight:900;
}
.mb-video-chapter strong{
    font-size:12px;
}
.mb-watch-vocab{
    display:grid;
    gap:8px;
}
.mb-watch-vocab article{
    padding:10px;
    border-radius:10px;
    background:#f5f9fa;
}
.mb-watch-vocab strong{
    color:var(--mb-teal-dark);
}
.mb-watch-vocab p{
    margin:3px 0 0;
    color:var(--mb-muted);
    font-size:12px;
    line-height:1.45;
}
.mb-watch-reflection-section{
    margin-top:18px;
    padding:18px;
}
.mb-watch-section-heading{
    display:flex;
    gap:11px;
    align-items:center;
    margin-bottom:14px;
}
.mb-watch-section-heading > span{
    display:flex;
    width:40px;
    height:40px;
    align-items:center;
    justify-content:center;
    border-radius:12px;
    background:linear-gradient(135deg,#eefafa,#f4edfb);
    font-size:20px;
}
.mb-watch-section-heading small{
    color:var(--mb-teal-dark);
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-watch-section-heading h3{
    margin:2px 0 0;
    color:var(--mb-purple-dark);
}
.mb-pause-prompts{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:11px;
}
.mb-pause-prompt{
    padding:14px;
    border-radius:13px;
    background:#faf8ff;
    border:1px solid #e0d5f2;
}
.mb-pause-prompt > span{
    color:var(--mb-purple);
    font-size:9px;
    font-weight:900;
    letter-spacing:.07em;
    text-transform:uppercase;
}
.mb-pause-prompt p{
    min-height:65px;
    margin:6px 0 12px;
}
.mb-pause-reveal{
    border:0;
    border-radius:8px;
    padding:8px 10px;
    background:var(--mb-teal);
    color:#fff;
    font-weight:850;
    cursor:pointer;
}
.mb-pause-response{
    margin-top:10px;
}
.mb-pause-response textarea{
    width:100%;
    box-sizing:border-box;
    border:1px solid var(--mb-border);
    border-radius:9px;
    padding:9px;
    font:inherit;
}
.mb-transcript-section{
    margin-top:18px;
    overflow:hidden;
}
.mb-transcript-toggle{
    width:100%;
    display:flex;
    justify-content:space-between;
    gap:20px;
    align-items:center;
    border:0;
    padding:16px 18px;
    background:linear-gradient(90deg,#eefafa,#f4eefb);
    color:var(--mb-ink);
    text-align:left;
    cursor:pointer;
}
.mb-transcript-toggle small{
    display:block;
    color:var(--mb-teal-dark);
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-transcript-toggle strong{
    color:var(--mb-purple-dark);
    font-size:17px;
}
.mb-transcript-toggle > span:last-child{
    color:var(--mb-purple);
    font-size:22px;
}
.mb-transcript-content{
    padding:18px;
}
.mb-print-transcript{
    margin-top:12px;
    border:0;
    border-radius:9px;
    padding:8px 11px;
    background:var(--mb-purple);
    color:#fff;
    font-weight:850;
    cursor:pointer;
}
.mb-watch-next-step{
    display:flex;
    justify-content:space-between;
    gap:20px;
    align-items:center;
    margin-top:18px;
    padding:18px;
    border-radius:16px;
    background:linear-gradient(135deg,var(--mb-teal-dark),#075467);
    color:#fff;
}
.mb-watch-next-step span{
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-watch-next-step h3{
    margin:4px 0;
    color:#fff;
}
.mb-watch-next-step p{
    margin:0;
    color:rgba(255,255,255,.80);
}
.mb-watch-next-step a{
    flex:0 0 auto;
    border-radius:10px;
    padding:10px 14px;
    background:#fff;
    color:var(--mb-purple-dark) !important;
    font-weight:900;
    text-decoration:none !important;
}
.mb-watch-empty{
    padding:42px 20px;
    border:1px dashed var(--mb-border);
    border-radius:16px;
    background:#fafcfc;
    text-align:center;
}
.mb-watch-empty span{
    font-size:34px;
}
.mb-watch-empty h3{
    margin:8px 0 4px;
    color:var(--mb-purple-dark);
}
.mb-watch-empty p{
    margin:0;
    color:var(--mb-muted);
}

@media(max-width:950px){
    .mb-watch-studio{
        grid-template-columns:1fr;
    }
    .mb-pause-prompts{
        grid-template-columns:1fr;
    }
}
@media(max-width:640px){
    .mb-watch-intro,
    .mb-watch-next-step{
        flex-direction:column;
        align-items:flex-start;
    }
    .mb-watch-status{
        align-items:flex-start;
    }
}


/* MathBinder 20.0 — Interactive Practice Studio */
.mb-gold-practice{border-top:8px solid #d29a1f;background:linear-gradient(90deg,rgba(210,154,31,.035),transparent 45%),#fff}
.mb-practice-intro{display:flex;justify-content:space-between;gap:24px;align-items:start;margin-bottom:18px}
.mb-practice-kicker{color:var(--mb-teal-dark);font-size:10px;font-weight:900;letter-spacing:.09em;text-transform:uppercase}
.mb-practice-intro h3{margin:5px 0;color:var(--mb-purple-dark)}
.mb-practice-intro p{margin:0;color:var(--mb-muted)}
.mb-practice-summary{text-align:right}.mb-practice-summary strong{display:block;color:var(--mb-purple-dark);font-size:30px}.mb-practice-summary span{color:var(--mb-muted);font-size:11px;font-weight:800}
.mb-practice-roadmap{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:18px}
.mb-practice-roadmap span{padding:10px;border-radius:999px;background:#eef2f3;color:var(--mb-muted);font-size:11px;font-weight:900;text-align:center}
.mb-practice-roadmap span.is-complete{background:#2f7d5b;color:#fff}
.mb-practice-stage{margin-top:16px;padding:20px;border:1px solid var(--mb-border);border-radius:18px;background:#fff}
.mb-practice-stage-heading{display:flex;gap:11px;align-items:center;margin-bottom:15px}
.mb-practice-stage-heading>span{display:flex;width:40px;height:40px;align-items:center;justify-content:center;border-radius:50%;background:linear-gradient(135deg,var(--mb-purple),var(--mb-teal));color:#fff;font-weight:900}
.mb-practice-stage-heading small{color:var(--mb-teal-dark);font-size:9px;font-weight:900;text-transform:uppercase}
.mb-practice-stage-heading h3{margin:2px 0;color:var(--mb-purple-dark)}
.mb-practice-items{display:grid;gap:12px}
.mb-practice-problem{padding:16px;border:1px solid var(--mb-border);border-radius:14px;background:#fafcfc}
.mb-practice-problem.is-correct{border-color:#2f7d5b;background:#eef9f3}.mb-practice-problem.is-incorrect{border-color:#b45252}
.mb-practice-problem-label{color:var(--mb-teal-dark);font-size:9px;font-weight:900;text-transform:uppercase}
.mb-measurement-visual svg text{fill:#25364d;stroke:none;stroke-width:0;font-family:Arial,Helvetica,sans-serif;font-size:13px;font-weight:700}
.mb-practice-problem h4{margin:5px 0 12px;color:var(--mb-purple-dark)}
.mb-practice-answer{width:100%;box-sizing:border-box;border:1px solid var(--mb-border);border-radius:10px;padding:11px;font:inherit}
.mb-practice-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.mb-practice-actions button,.mb-complete-challenge{border:0;border-radius:9px;padding:8px 11px;font-weight:850;cursor:pointer}
.mb-practice-submit,.mb-complete-challenge{background:var(--mb-purple);color:#fff}.mb-practice-hint{background:var(--mb-teal-light);color:var(--mb-teal-dark)}.mb-practice-solution{background:#eef2f3;color:var(--mb-muted)}
.mb-place-value-entry-grid{display:grid;grid-template-columns:repeat(var(--mb-place-columns,3),minmax(0,1fr));max-width:650px;margin:24px auto 8px;border:4px solid var(--mb-teal,#087f83);border-radius:20px;overflow:hidden;background:#fff}.mb-place-value-entry{display:grid;grid-template-rows:auto minmax(100px,1fr);text-align:center}.mb-place-value-entry+.mb-place-value-entry{border-left:3px solid #b9d9d8}.mb-place-value-entry strong{padding:14px 8px;border-bottom:3px solid #b9d9d8;font-size:clamp(1rem,2vw,1.45rem);font-weight:600}.mb-place-value-entry input{width:100%;min-width:0;border:0!important;border-radius:0!important;box-shadow:none!important;text-align:center;font-size:clamp(2rem,5vw,3.25rem);font-weight:700;color:var(--mb-ink,#293241);background:#fff;padding:12px}.mb-place-value-entry input:focus{outline:4px solid #6d28d9;outline-offset:-5px;background:#faf7ff}@media(max-width:560px){.mb-place-value-entry-grid{border-width:3px}.mb-place-value-entry{grid-template-rows:auto minmax(78px,1fr)}.mb-place-value-entry strong{font-size:.9rem;padding:10px 4px}.mb-place-value-entry input{font-size:2rem;padding:8px 3px}}
.mb-practice-feedback{margin-top:10px;font-weight:800}.mb-practice-feedback.is-correct{color:#2f7d5b}.mb-practice-feedback.is-incorrect{color:#a04444}.mb-practice-feedback.is-hint{color:#8a6510}.mb-practice-feedback.is-solution{color:var(--mb-purple-dark)}
.mb-practice-open-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.mb-practice-open-grid article{padding:15px;border-radius:14px;background:#faf8ff;border:1px solid #e0d5f2}
.mb-practice-open-grid span{color:var(--mb-purple-dark);font-weight:900}.mb-practice-open-grid textarea{width:100%;box-sizing:border-box;border:1px solid var(--mb-border);border-radius:9px;padding:9px;font:inherit}
.mb-complete-challenge{margin-top:12px}
.mb-practice-complete{display:flex;gap:14px;align-items:center;margin-top:18px;padding:20px;border-radius:17px;background:linear-gradient(135deg,#eef9f4,#f7f1fc)}
.mb-practice-complete>span{font-size:32px}.mb-practice-complete small{color:var(--mb-teal-dark);font-weight:900;text-transform:uppercase}.mb-practice-complete h3{margin:3px 0;color:var(--mb-purple-dark)}.mb-practice-complete p{margin:0;color:var(--mb-muted)}
.mb-practice-complete a{margin-left:auto;border-radius:10px;padding:10px 13px;background:var(--mb-purple);color:#fff!important;text-decoration:none!important;font-weight:900}
.mb-external-practice{margin-top:20px;padding-top:18px;border-top:1px solid var(--mb-border)}
@media(max-width:760px){.mb-practice-intro,.mb-practice-complete{flex-direction:column}.mb-practice-summary{text-align:left}.mb-practice-roadmap,.mb-practice-open-grid{grid-template-columns:1fr}.mb-practice-complete a{margin-left:0}}

/* Standards-domain Binder catalog and notebook section pages */
.mb-curriculum-catalog,.mb-section-notebook-view{width:min(1180px,calc(100% - 36px));margin:28px auto 70px;color:var(--mb-ink);font-family:Arial,sans-serif;box-sizing:border-box}
.mb-curriculum-catalog-heading{padding:30px 34px;border:1px solid var(--mb-border);border-radius:24px;background:linear-gradient(135deg,#eafafa,#f5effc);box-shadow:0 16px 38px rgba(37,49,61,.07)}
.mb-topics-kicker{display:block;color:var(--mb-teal-dark);font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.mb-curriculum-catalog-heading h2{margin:7px 0 5px;color:var(--mb-purple-dark);font-size:clamp(30px,4vw,48px);line-height:1.08}.mb-curriculum-catalog-heading p{margin:0;color:var(--mb-muted);font-size:17px}
.mb-curriculum-filters{display:grid;grid-template-columns:minmax(260px,1.3fr) repeat(2,minmax(210px,.8fr));gap:14px;margin:24px 0;padding:18px;border:1px solid var(--mb-border);border-radius:18px;background:#fff;box-shadow:0 8px 24px rgba(37,49,61,.05)}
.mb-curriculum-filters label{display:grid;gap:7px;color:var(--mb-ink);font-size:13px;font-weight:800}.mb-curriculum-filters input,.mb-curriculum-filters select{width:100%;min-height:46px;padding:9px 12px;border:1px solid #bfcbd2;border-radius:10px;background:#fff;color:var(--mb-ink);font:inherit;box-sizing:border-box}
.mb-curriculum-section-heading{margin:34px 0 16px}.mb-curriculum-section-heading>span{color:var(--mb-teal-dark);font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.06em}.mb-curriculum-section-heading h3{margin:4px 0;color:var(--mb-purple-dark);font-size:30px}.mb-curriculum-section-heading p{margin:0;color:var(--mb-muted)}
.mb-domain-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.mb-domain-card{display:grid;align-content:start;min-height:185px;padding:22px;border:1px solid var(--mb-border);border-top:7px solid var(--mb-teal);border-radius:18px;background:#fff;color:var(--mb-ink)!important;text-decoration:none!important;box-shadow:0 10px 28px rgba(37,49,61,.06);transition:transform .18s ease,box-shadow .18s ease}.mb-domain-card:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(37,49,61,.12)}.mb-domain-card>span{color:var(--mb-purple);font-size:12px;font-weight:900}.mb-domain-card h3{margin:10px 0 6px;color:var(--mb-purple-dark);font-size:21px;line-height:1.2}.mb-domain-card p{margin:0 0 18px;color:var(--mb-muted)}.mb-domain-card strong{align-self:end;color:var(--mb-teal-dark)}.mb-domain-card-2{border-top-color:var(--mb-purple)}.mb-domain-card-3{border-top-color:#d29a1f}.mb-domain-card-4{border-top-color:#3478b8}
.mb-curriculum-high-school-heading{margin-top:48px}.mb-curriculum-legend{margin-top:28px;padding:20px 22px;border-radius:16px;background:var(--mb-teal-light);border-left:6px solid var(--mb-teal)}.mb-curriculum-legend p{margin:5px 0 0;color:var(--mb-muted)}
.mb-section-notebook-back{display:inline-flex;margin-bottom:16px;color:var(--mb-purple-dark)!important;font-weight:800;text-decoration:none!important}.mb-section-notebook-sheet{position:relative;overflow:hidden;padding:44px 46px 48px 92px;border:1px solid var(--mb-border);border-top:9px solid var(--mb-teal);border-radius:24px;background:repeating-linear-gradient(#fff 0,#fff 45px,#dcecef 46px);box-shadow:0 18px 48px rgba(37,49,61,.1)}.mb-section-notebook-sheet:before{content:"";position:absolute;left:67px;top:0;bottom:0;width:2px;background:#f2cfd5}.mb-section-notebook-tab{position:absolute;right:30px;top:24px;padding:7px 13px;border-radius:999px;background:var(--mb-purple-light);color:var(--mb-purple-dark);font-size:12px;font-weight:900}.mb-section-notebook-holes{position:absolute;left:21px;top:105px;display:grid;gap:88px}.mb-section-notebook-holes i{width:18px;height:18px;border:5px solid var(--mb-purple);border-radius:50%;background:#fff}.mb-section-notebook-body{position:relative;z-index:1}.mb-section-notebook-body h1{margin:7px 0;color:var(--mb-purple-dark);font-size:clamp(38px,6vw,64px);line-height:1.05}.mb-section-notebook-meta{margin:0 0 22px;color:var(--mb-muted)}.mb-section-notebook-rule{height:4px;margin:18px 0 28px;border-radius:999px;background:linear-gradient(90deg,var(--mb-teal),var(--mb-purple))}.mb-section-notebook-body h2{margin:0 0 2px;color:var(--mb-purple-dark);font-size:30px}.mb-section-notebook-instructions{margin:0 0 18px;color:var(--mb-muted)}
.mb-section-subtopic-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.mb-section-subtopic-group{grid-column:1/-1;margin-top:12px;color:var(--mb-teal-dark);font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.07em}.mb-section-subtopic-link{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:88px;padding:16px 18px;border:1px solid var(--mb-border);border-radius:14px;background:rgba(255,255,255,.96);color:var(--mb-ink)!important;text-decoration:none!important;box-shadow:0 6px 18px rgba(37,49,61,.05)}.mb-section-subtopic-link span{display:grid;gap:4px}.mb-section-subtopic-link strong{color:var(--mb-purple-dark);font-size:17px}.mb-section-subtopic-link small{color:var(--mb-muted)}.mb-section-subtopic-link b{flex:0 0 auto;color:var(--mb-teal-dark);font-size:13px}.mb-section-subtopic-link.is-planned{opacity:.68;background:#f5f7f8}
@media(max-width:900px){.mb-domain-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mb-curriculum-filters{grid-template-columns:1fr}.mb-section-subtopic-links{grid-template-columns:1fr}}
@media(max-width:600px){.mb-curriculum-catalog,.mb-section-notebook-view{width:min(100% - 20px,1180px)}.mb-domain-card-grid{grid-template-columns:1fr}.mb-curriculum-catalog-heading{padding:24px 20px}.mb-section-notebook-sheet{padding:70px 18px 34px 46px}.mb-section-notebook-sheet:before{left:34px}.mb-section-notebook-holes{left:8px}.mb-section-notebook-tab{right:18px}.mb-section-subtopic-link{align-items:flex-start;flex-direction:column}}


/* MathBinder 21.0 — Personal Binder Collection */
.mb-gold-binder{border-top:8px solid var(--mb-teal);background:linear-gradient(90deg,rgba(15,143,143,.03),transparent 48%),#fff}
.mb-binder-collection-hero{display:grid;grid-template-columns:1fr 250px;gap:24px;align-items:center;padding:24px;border-radius:20px;background:linear-gradient(135deg,#eefafa,#f6f0fc);margin-bottom:20px}
.mb-binder-collection-hero h3{margin:6px 0;color:var(--mb-purple-dark)}
.mb-binder-collection-hero p{margin:0;color:var(--mb-muted);line-height:1.55}
.mb-binder-hero-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.mb-binder-hero-actions button,.mb-binder-hero-actions a{border:0;border-radius:10px;padding:10px 14px;font-weight:900;text-decoration:none!important}
.mb-binder-hero-actions button{background:var(--mb-purple);color:#fff;cursor:pointer}.mb-binder-hero-actions button.is-added{background:#2f7d5b}
.mb-binder-hero-actions a{background:var(--mb-teal);color:#fff!important}
.mb-binder-collection-summary{padding:18px;border-radius:16px;background:#fff;box-shadow:0 10px 24px rgba(36,50,61,.08);text-align:center}
.mb-binder-collection-summary>span{display:block;color:var(--mb-teal-dark);font-size:10px;font-weight:900;text-transform:uppercase}
.mb-binder-collection-summary strong{display:block;margin:4px 0;color:var(--mb-purple-dark);font-size:42px}
.mb-binder-collection-summary small{color:var(--mb-muted)}
.mb-mini-binder-progress{height:10px;margin:12px 0 7px;border-radius:999px;background:#e6edef;overflow:hidden}.mb-mini-binder-progress span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--mb-teal),var(--mb-purple));transition:width .3s ease}
.mb-binder-collection-summary em{color:var(--mb-muted);font-size:10px;font-style:normal}
.mb-binder-subsection{margin-top:18px;padding:20px;border:1px solid var(--mb-border);border-radius:18px;background:#fff}
.mb-binder-subheading{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:15px}.mb-binder-subheading span{color:var(--mb-teal-dark);font-size:9px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.mb-binder-subheading h3{margin:4px 0 0;color:var(--mb-purple-dark)}.mb-binder-subheading strong{color:var(--mb-muted);font-size:11px}
.mb-binder-dashboard-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}
.mb-recent-binder-list{display:grid;gap:8px}.mb-recent-binder-item{display:grid;grid-template-columns:30px 1fr auto;gap:10px;align-items:center;padding:11px;border:1px solid var(--mb-border);border-radius:11px;color:var(--mb-ink)!important;text-decoration:none!important;background:#fafcfc}.mb-recent-binder-item>span{display:flex;width:28px;height:28px;align-items:center;justify-content:center;border-radius:50%;background:#e6f5ec;color:#2f7d5b;font-weight:900}.mb-recent-binder-item strong,.mb-recent-binder-item small{display:block}.mb-recent-binder-item small{color:var(--mb-muted);font-size:10px}.mb-recent-binder-item em{color:var(--mb-purple);font-style:normal;font-weight:900;font-size:11px}.mb-binder-empty{color:var(--mb-muted)}
.mb-binder-preview{position:relative;min-height:210px;display:flex;align-items:center;justify-content:center}.mb-preview-cover{width:190px;height:150px;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:14px 7px 7px 14px;background:linear-gradient(145deg,#0f8f8f,#075467);color:#fff;box-shadow:14px 16px 24px rgba(36,50,61,.18)}.mb-preview-cover strong{font-size:25px}.mb-preview-cover small{margin-top:5px;font-size:9px}.mb-preview-cover span{margin-top:18px;border-radius:999px;padding:5px 9px;background:rgba(255,255,255,.18);font-size:10px}.mb-preview-tabs{position:absolute;right:10px;top:30px;display:flex;flex-direction:column;gap:5px}.mb-preview-tabs span{border-radius:0 7px 7px 0;padding:6px 8px;color:#fff;font-size:9px;font-weight:900}.mb-preview-tabs span:nth-child(1){background:#6d44b8}.mb-preview-tabs span:nth-child(2){background:#0f8f8f}.mb-preview-tabs span:nth-child(3){background:#d29a1f}.mb-preview-tabs span:nth-child(4){background:#2f7d5b}.mb-open-full-binder{display:block;margin-top:8px;border-radius:9px;padding:9px 12px;background:var(--mb-purple);color:#fff!important;text-align:center;text-decoration:none!important;font-weight:900}
.mb-study-pack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.mb-study-pack-grid article{padding:16px;border:1px solid var(--mb-border);border-radius:14px;background:#fafcfc}.mb-study-pack-grid article>span{font-size:25px}.mb-study-pack-grid h4{margin:8px 0 5px;color:var(--mb-purple-dark)}.mb-study-pack-grid p{min-height:58px;margin:0 0 12px;color:var(--mb-muted)}.mb-study-pack-grid button,.mb-study-pack-grid a{display:inline-block;border:0;border-radius:9px;padding:8px 11px;background:var(--mb-teal);color:#fff!important;font-weight:900;text-decoration:none!important;cursor:pointer}
.mb-binder-milestones{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.mb-binder-milestones article{padding:14px;border:1px solid var(--mb-border);border-radius:13px;background:#f3f5f6;opacity:.55;text-align:center}.mb-binder-milestones article.is-earned{background:linear-gradient(135deg,#eef9f4,#f3edfb);border-color:#7eb99b;opacity:1}.mb-binder-milestones strong{display:flex;width:42px;height:42px;margin:0 auto 7px;align-items:center;justify-content:center;border-radius:50%;background:#c8d4d8;color:#fff}.mb-binder-milestones article.is-earned strong{background:linear-gradient(135deg,var(--mb-teal),var(--mb-purple))}.mb-binder-milestones span{color:var(--mb-purple-dark);font-size:11px;font-weight:900}
.mb-binder-parent-tip{display:flex;gap:13px;margin-top:18px;padding:17px;border-radius:15px;background:linear-gradient(135deg,#eef9f4,#f7fcfa)}.mb-binder-parent-tip>span{font-size:24px}.mb-binder-parent-tip strong{color:#2f7d5b}.mb-binder-parent-tip p{margin:4px 0 0;color:var(--mb-muted)}
.mb-binder-finish{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-top:18px;padding:20px;border-radius:17px;background:linear-gradient(135deg,var(--mb-teal-dark),#075467);color:#fff}.mb-binder-finish span{font-size:9px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.mb-binder-finish h3{margin:4px 0;color:#fff}.mb-binder-finish p{margin:0;color:rgba(255,255,255,.8)}.mb-binder-finish a{flex:0 0 auto;border-radius:10px;padding:10px 14px;background:#fff;color:var(--mb-purple-dark)!important;text-decoration:none!important;font-weight:900}
@media(max-width:900px){.mb-binder-collection-hero,.mb-binder-dashboard-grid{grid-template-columns:1fr}.mb-study-pack-grid{grid-template-columns:1fr}.mb-binder-milestones{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.mb-binder-subheading,.mb-binder-finish{flex-direction:column;align-items:flex-start}.mb-binder-milestones{grid-template-columns:1fr}.mb-binder-finish a{flex:auto}}


/* MathBinder 21.1 — Binder finishing refinements */
.mb-binder-empty{
    display:flex;
    min-height:128px;
    flex-direction:column;
    align-items:flex-start;
    justify-content:center;
    gap:5px;
    padding:18px;
    border:1px dashed var(--mb-border);
    border-radius:14px;
    background:linear-gradient(135deg,#fafcfc,#f8f5fc);
}
.mb-binder-empty strong{
    color:var(--mb-purple-dark);
    font-size:15px;
}
.mb-binder-empty span{
    color:var(--mb-muted);
    font-size:13px;
}
.mb-binder-finish-with-tip{
    display:block;
    padding:0;
    overflow:hidden;
}
.mb-binder-finish-main{
    display:flex;
    justify-content:space-between;
    gap:20px;
    align-items:center;
    padding:20px;
}
.mb-binder-finish-tip{
    display:flex;
    gap:12px;
    align-items:flex-start;
    padding:15px 20px;
    border-top:1px solid rgba(255,255,255,.18);
    background:rgba(255,255,255,.08);
}
.mb-binder-finish-tip > span{
    font-size:22px;
    line-height:1;
}
.mb-binder-finish-tip strong{
    display:block;
    color:#fff;
}
.mb-binder-finish-tip p{
    margin:4px 0 0;
    color:rgba(255,255,255,.82);
    line-height:1.5;
}
.mb-binder-finish-with-tip .mb-binder-finish-main > a{
    flex:0 0 auto;
}

@media(max-width:640px){
    .mb-binder-finish-main{
        flex-direction:column;
        align-items:flex-start;
    }
    .mb-binder-finish-with-tip .mb-binder-finish-main > a{
        flex:auto;
    }
}


/* MathBinder 22.0 — Gold Standard My Math Journal */
.mb-workbook-section{
    border-top:8px solid var(--mb-purple);
    background:linear-gradient(90deg,rgba(104,48,184,.025),transparent 48%),#fff;
}
.mb-journal-growth{
    margin-top:20px;
    padding:20px;
    border:1px solid var(--mb-border);
    border-radius:18px;
    background:#fff;
}
.mb-journal-growth-heading{
    display:flex;
    justify-content:space-between;
    gap:18px;
    align-items:start;
    margin-bottom:14px;
}
.mb-journal-growth-heading span{
    color:var(--mb-teal-dark);
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-journal-growth-heading h3{
    margin:4px 0;
    color:var(--mb-purple-dark);
}
.mb-journal-growth-heading p{
    margin:0;
    color:var(--mb-muted);
}
.mb-journal-growth-heading > strong{
    border-radius:999px;
    padding:7px 10px;
    background:#f0ebf8;
    color:var(--mb-purple-dark);
    font-size:11px;
}
.mb-journal-history-list{
    display:grid;
    gap:9px;
}
.mb-journal-history-empty{
    display:flex;
    min-height:110px;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    padding:17px;
    border:1px dashed var(--mb-border);
    border-radius:13px;
    background:linear-gradient(135deg,#fafcfc,#faf7fd);
}
.mb-journal-history-empty strong{
    color:var(--mb-purple-dark);
}
.mb-journal-history-empty span{
    color:var(--mb-muted);
}
.mb-journal-history-card{
    display:flex;
    justify-content:space-between;
    gap:15px;
    align-items:center;
    padding:13px 14px;
    border:1px solid var(--mb-border);
    border-radius:12px;
    background:#fafcfc;
}
.mb-journal-history-card span{
    color:var(--mb-teal-dark);
    font-size:9px;
    font-weight:900;
    text-transform:uppercase;
}
.mb-journal-history-card h4{
    margin:3px 0;
    color:var(--mb-purple-dark);
}
.mb-journal-history-card p{
    margin:0;
    color:var(--mb-muted);
    font-size:12px;
}
.mb-journal-history-card > strong{
    flex:0 0 auto;
    border-radius:999px;
    padding:7px 10px;
    background:#e8f5f2;
    color:var(--mb-teal-dark);
    font-size:10px;
}
.mb-journal-next-step{
    display:flex;
    justify-content:space-between;
    gap:20px;
    align-items:center;
    margin-top:20px;
    padding:20px;
    border-radius:17px;
    background:linear-gradient(135deg,#54269a,#0f8f8f);
    color:#fff;
}
.mb-journal-next-step span{
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-journal-next-step h3{
    margin:4px 0;
    color:#fff;
}
.mb-journal-next-step p{
    margin:0;
    color:rgba(255,255,255,.82);
}
.mb-journal-next-step a{
    flex:0 0 auto;
    border-radius:10px;
    padding:10px 14px;
    background:#fff;
    color:var(--mb-purple-dark)!important;
    font-weight:900;
    text-decoration:none!important;
}
@media(max-width:680px){
    .mb-journal-growth-heading,
    .mb-journal-history-card,
    .mb-journal-next-step{
        flex-direction:column;
        align-items:flex-start;
    }
    .mb-journal-history-card > strong,
    .mb-journal-next-step a{
        flex:auto;
    }
}


/* MathBinder 23.0 — Gold Standard Mastery Check */
.mb-gold-mastery{
    border-top:8px solid #2f7d5b;
    background:linear-gradient(90deg,rgba(47,125,91,.03),transparent 48%),#fff;
}
.mb-mastery-intro{
    display:flex;
    justify-content:space-between;
    gap:22px;
    align-items:start;
    margin-bottom:18px;
}
.mb-mastery-kicker{
    color:var(--mb-teal-dark);
    font-size:10px;
    font-weight:900;
    letter-spacing:.09em;
    text-transform:uppercase;
}
.mb-mastery-intro h3{margin:5px 0;color:var(--mb-purple-dark)}
.mb-mastery-intro p{margin:0;color:var(--mb-muted)}
.mb-mastery-time{
    display:flex;
    min-width:105px;
    flex-direction:column;
    align-items:center;
    padding:14px;
    border-radius:14px;
    background:#eef8f3;
}
.mb-mastery-time strong{color:#2f7d5b;font-size:28px}
.mb-mastery-time span{color:var(--mb-muted);font-size:10px;font-weight:900;text-transform:uppercase}
.mb-mastery-progress-wrap{margin-bottom:18px;padding:14px 16px;border:1px solid var(--mb-border);border-radius:14px;background:#fafcfc}
.mb-mastery-progress-copy{display:flex;justify-content:space-between;gap:12px;margin-bottom:8px;color:var(--mb-muted);font-size:11px}
.mb-mastery-progress-copy strong{color:var(--mb-purple-dark)}
.mb-mastery-progress-track{height:10px;border-radius:999px;background:#e5edef;overflow:hidden}
.mb-mastery-progress-track span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--mb-teal),var(--mb-purple));transition:width .25s ease}
.mb-mastery-success-criteria{margin-bottom:18px;padding:17px;border-radius:15px;background:linear-gradient(135deg,#eef9f4,#f7f2fc)}
.mb-mastery-success-criteria>span{color:var(--mb-teal-dark);font-size:9px;font-weight:900;text-transform:uppercase}
.mb-mastery-success-criteria h3{margin:4px 0 10px;color:var(--mb-purple-dark)}
.mb-mastery-assessment{display:grid;gap:14px}
.mb-mastery-item{padding:18px;border:1px solid var(--mb-border);border-radius:16px;background:#fff}
.mb-mastery-item.is-correct{border-color:#2f7d5b;background:#f1faf5}
.mb-mastery-item.is-incorrect{border-color:#b45252;background:#fff5f5}
.mb-mastery-item-heading{display:grid;grid-template-columns:42px 1fr;gap:12px;align-items:start;margin-bottom:14px}
.mb-mastery-number{display:flex;width:40px;height:40px;align-items:center;justify-content:center;border-radius:50%;background:linear-gradient(135deg,var(--mb-purple),var(--mb-teal));color:#fff;font-weight:900}
.mb-mastery-item-heading small{color:var(--mb-teal-dark);font-size:9px;font-weight:900;text-transform:uppercase}
.mb-mastery-item-heading h3{margin:3px 0;color:var(--mb-purple-dark)}
.mb-mastery-choice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
.mb-mastery-choice{display:flex;gap:10px;align-items:center;border:1px solid var(--mb-border);border-radius:11px;padding:11px;background:#fafcfc;color:var(--mb-ink);text-align:left;cursor:pointer}
.mb-mastery-choice>span{display:flex;width:30px;height:30px;align-items:center;justify-content:center;border-radius:50%;background:#f0eafa;color:var(--mb-purple-dark);font-weight:900}
.mb-mastery-choice.is-selected{border-color:var(--mb-purple);background:#f8f3fd}
.mb-mastery-item.is-correct .mb-mastery-choice.is-selected{border-color:#2f7d5b;background:#e8f6ee}
.mb-mastery-item.is-incorrect .mb-mastery-choice.is-selected{border-color:#b45252;background:#fdecec}
.mb-mastery-response{width:100%;box-sizing:border-box;border:1px solid var(--mb-border);border-radius:11px;padding:12px;font:inherit}
.mb-self-check-response{margin-top:9px;border:0;border-radius:9px;padding:8px 11px;background:var(--mb-teal);color:#fff;font-weight:900;cursor:pointer}
.mb-constructed-guide{margin-top:10px;padding:12px;border-radius:10px;background:#fff7d9;color:#6d5415}
.mb-mastery-item-status{margin-top:9px;font-weight:850}
.mb-mastery-confidence{margin-top:18px;padding:18px;border:1px solid var(--mb-border);border-radius:16px;background:#fafcfc}
.mb-mastery-confidence>div:first-child>span{color:var(--mb-teal-dark);font-size:9px;font-weight:900;text-transform:uppercase}
.mb-mastery-confidence h3{margin:4px 0 12px;color:var(--mb-purple-dark)}
.mb-mastery-confidence-options{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.mb-mastery-confidence-options button{border:1px solid var(--mb-border);border-radius:11px;padding:10px;background:#fff;color:var(--mb-purple-dark);font-size:20px;font-weight:900;cursor:pointer}
.mb-mastery-confidence-options button small{display:block;margin-top:5px;color:var(--mb-muted);font-size:9px}
.mb-mastery-confidence-options button.is-selected{border-color:var(--mb-purple);background:#f3edfb}
.mb-submit-mastery-check{width:100%;margin-top:16px;border:0;border-radius:12px;padding:13px;background:linear-gradient(90deg,var(--mb-purple),var(--mb-teal));color:#fff;font-size:15px;font-weight:900;cursor:pointer}
.mb-mastery-results{margin-top:20px;border:1px solid var(--mb-border);border-radius:18px;overflow:hidden}
.mb-mastery-results-hero{display:grid;grid-template-columns:55px 1fr auto;gap:14px;align-items:center;padding:20px;background:linear-gradient(135deg,#eef9f4,#f5effb)}
.mb-mastery-result-icon{font-size:34px}
.mb-mastery-results-hero small{color:var(--mb-teal-dark);font-size:9px;font-weight:900;text-transform:uppercase}
.mb-mastery-results-hero h3{margin:3px 0;color:var(--mb-purple-dark)}
.mb-mastery-results-hero p{margin:0;color:var(--mb-muted)}
.mb-mastery-results-hero>strong{color:var(--mb-purple-dark);font-size:38px}
.mb-mastery-result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:16px}
.mb-mastery-result-grid article{padding:13px;border-radius:12px;background:#fafcfc;text-align:center}
.mb-mastery-result-grid span{display:block;color:var(--mb-muted);font-size:9px;font-weight:900;text-transform:uppercase}
.mb-mastery-result-grid strong{display:block;margin-top:5px;color:var(--mb-purple-dark)}
.mb-mastery-guidance{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:18px;border-top:1px solid var(--mb-border)}
.mb-mastery-guidance span{color:var(--mb-teal-dark);font-size:9px;font-weight:900;text-transform:uppercase}
.mb-mastery-guidance h3{margin:4px 0;color:var(--mb-purple-dark)}
.mb-mastery-guidance p{margin:0;color:var(--mb-muted)}
.mb-mastery-guidance-actions{display:flex;flex-wrap:wrap;gap:8px}
.mb-mastery-guidance-actions a,.mb-mastery-guidance-actions button{border:0;border-radius:9px;padding:9px 11px;background:var(--mb-teal);color:#fff!important;font-weight:900;text-decoration:none!important;cursor:pointer}
.mb-mastery-guidance-actions button{background:var(--mb-purple)}
.mb-mastery-badge{display:flex;gap:12px;align-items:center;margin:0 18px 18px;padding:15px;border-radius:14px;background:linear-gradient(135deg,#fff6c8,#f5effb)}
.mb-mastery-badge>span{font-size:32px}
.mb-mastery-badge small{display:block;color:#8a6510;font-size:9px;font-weight:900;text-transform:uppercase}
.mb-mastery-badge strong{display:block;color:var(--mb-purple-dark)}
.mb-mastery-next-lesson{display:block;margin:0 18px 18px;border-radius:10px;padding:11px;background:#2f7d5b;color:#fff!important;text-align:center;text-decoration:none!important;font-weight:900}
@media(max-width:760px){
    .mb-mastery-intro,.mb-mastery-guidance{flex-direction:column;align-items:flex-start}
    .mb-mastery-choice-grid,.mb-mastery-confidence-options,.mb-mastery-result-grid{grid-template-columns:1fr}
    .mb-mastery-results-hero{grid-template-columns:45px 1fr}
    .mb-mastery-results-hero>strong{grid-column:1/-1}
}


/* MathBinder 24.0 — Gold Standard Parent Help */
.mb-gold-parent{
    border-top:8px solid #2f7d5b;
    background:linear-gradient(90deg,rgba(47,125,91,.03),transparent 48%),#fff;
}
.mb-parent-intro{
    display:flex;
    justify-content:space-between;
    gap:22px;
    align-items:start;
    margin-bottom:18px;
}
.mb-parent-kicker{
    color:#2f7d5b;
    font-size:10px;
    font-weight:900;
    letter-spacing:.09em;
    text-transform:uppercase;
}
.mb-parent-intro h3{margin:5px 0;color:var(--mb-purple-dark)}
.mb-parent-intro p{margin:0;color:var(--mb-muted);line-height:1.55}
.mb-print-parent-guide{
    flex:0 0 auto;
    border:0;
    border-radius:10px;
    padding:10px 13px;
    background:var(--mb-purple);
    color:#fff;
    font-weight:900;
    cursor:pointer;
}
.mb-parent-summary{
    display:grid;
    grid-template-columns:58px 1fr;
    gap:15px;
    align-items:start;
    padding:20px;
    border-radius:17px;
    background:linear-gradient(135deg,#eef9f4,#f5f0fb);
}
.mb-parent-icon{
    display:flex;
    width:54px;
    height:54px;
    align-items:center;
    justify-content:center;
    border-radius:15px;
    background:#fff;
    font-size:27px;
}
.mb-parent-summary span{
    color:#2f7d5b;
    font-size:9px;
    font-weight:900;
    text-transform:uppercase;
}
.mb-parent-summary h3{margin:4px 0 6px;color:var(--mb-purple-dark)}
.mb-parent-summary p{margin:0;line-height:1.6}
.mb-parent-help-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:15px;
    margin-top:18px;
}
.mb-parent-card{
    padding:18px;
    border:1px solid var(--mb-border);
    border-radius:16px;
    background:#fff;
}
.mb-parent-card-heading{
    display:flex;
    gap:11px;
    align-items:center;
    margin-bottom:12px;
}
.mb-parent-card-heading>span{
    display:flex;
    width:40px;
    height:40px;
    align-items:center;
    justify-content:center;
    border-radius:12px;
    background:linear-gradient(135deg,#eef9f4,#f2ecfb);
    font-size:21px;
}
.mb-parent-card-heading small{
    color:#2f7d5b;
    font-size:9px;
    font-weight:900;
    text-transform:uppercase;
}
.mb-parent-card-heading h3{margin:2px 0;color:var(--mb-purple-dark)}
.mb-parent-card p{color:var(--mb-muted);line-height:1.6}
.mb-parent-mistake-list{display:grid;gap:9px}
.mb-parent-mistake-list article{
    padding:11px;
    border-radius:11px;
    background:#fff7f0;
}
.mb-parent-mistake-list strong{color:#9a5b24}
.mb-parent-mistake-list p{margin:4px 0 0}
.mb-start-parent-timer{
    border:0;
    border-radius:9px;
    padding:9px 11px;
    background:#2f7d5b;
    color:#fff;
    font-weight:900;
    cursor:pointer;
}
.mb-parent-timer{
    display:inline-block;
    margin-left:10px;
    color:var(--mb-purple-dark);
    font-size:20px;
    font-weight:900;
}
.mb-parent-extra{
    margin-top:18px;
    padding:18px;
    border:1px solid var(--mb-border);
    border-radius:16px;
    background:#fafcfc;
}
.mb-parent-boundary{
    display:flex;
    gap:13px;
    margin-top:18px;
    padding:17px;
    border-radius:15px;
    background:linear-gradient(135deg,#fff8d8,#f7f1fc);
}
.mb-parent-boundary>span{font-size:25px}
.mb-parent-boundary strong{color:var(--mb-purple-dark)}
.mb-parent-boundary p{margin:4px 0 0;color:var(--mb-muted)}
.mb-parent-next-step{
    display:flex;
    justify-content:space-between;
    gap:20px;
    align-items:center;
    margin-top:18px;
    padding:20px;
    border-radius:17px;
    background:linear-gradient(135deg,#2f7d5b,#0f6f74);
    color:#fff;
}
.mb-parent-next-step span{
    font-size:9px;
    font-weight:900;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.mb-parent-next-step h3{margin:4px 0;color:#fff}
.mb-parent-next-step p{margin:0;color:rgba(255,255,255,.82)}
.mb-parent-next-step a{
    flex:0 0 auto;
    border-radius:10px;
    padding:10px 14px;
    background:#fff;
    color:var(--mb-purple-dark)!important;
    font-weight:900;
    text-decoration:none!important;
}
@media(max-width:760px){
    .mb-parent-intro,.mb-parent-next-step{flex-direction:column;align-items:flex-start}
    .mb-parent-help-grid{grid-template-columns:1fr}
    .mb-parent-summary{grid-template-columns:1fr}
    .mb-parent-next-step a{flex:auto}
}


/* MathBinder 25.1 — Gold Standard Teacher Notes Hotfix */
.mb-gold-teacher{border-top:8px solid #365a86;background:linear-gradient(90deg,rgba(54,90,134,.03),transparent 48%),#fff}
.mb-teacher-intro{display:flex;justify-content:space-between;gap:22px;align-items:start;margin-bottom:18px}
.mb-teacher-kicker{color:#365a86;font-size:10px;font-weight:900;letter-spacing:.09em;text-transform:uppercase}
.mb-teacher-intro h3{margin:5px 0;color:var(--mb-purple-dark)}
.mb-teacher-intro p{margin:0;color:var(--mb-muted)}
.mb-print-teacher-guide{border:0;border-radius:10px;padding:10px 13px;background:#365a86;color:#fff;font-weight:900;cursor:pointer}
.mb-teacher-planning-grid,.mb-teacher-support-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.mb-teacher-card,.mb-teacher-wide-card,.mb-teacher-standards{padding:18px;border:1px solid var(--mb-border);border-radius:16px;background:#fff}
.mb-teacher-pacing-card{grid-column:1/-1}
.mb-teacher-card-heading{display:flex;gap:11px;align-items:center;margin-bottom:12px}
.mb-teacher-card-heading>span{display:flex;width:40px;height:40px;align-items:center;justify-content:center;border-radius:12px;background:linear-gradient(135deg,#edf3f9,#f3edfb);font-size:21px}
.mb-teacher-card-heading small{color:#365a86;font-size:9px;font-weight:900;text-transform:uppercase}
.mb-teacher-card-heading h3{margin:2px 0;color:var(--mb-purple-dark)}
.mb-teacher-pacing-list{display:grid;gap:9px}
.mb-teacher-pacing-list article{display:grid;grid-template-columns:140px 100px 1fr;gap:12px;padding:11px;border-radius:11px;background:#f8fafc}
.mb-teacher-pacing-list strong{color:var(--mb-purple-dark)}
.mb-teacher-pacing-list span{color:#365a86;font-weight:900}
.mb-teacher-pacing-list p{margin:0;color:var(--mb-muted)}
.mb-teacher-wide-card{margin-top:16px}
.mb-teacher-intervention-list{display:grid;gap:10px}
.mb-teacher-intervention-list article{display:grid;grid-template-columns:1fr 1fr;gap:13px;padding:13px;border-radius:12px;background:#fff8f1}
.mb-teacher-intervention-list span{display:block;color:#9a5b24;font-size:9px;font-weight:900;text-transform:uppercase}
.mb-teacher-intervention-list strong{display:block;margin-top:4px;color:#7d3f26}
.mb-teacher-intervention-list p{margin:4px 0 0;color:var(--mb-muted)}
.mb-teacher-differentiation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.mb-teacher-differentiation-grid article{padding:14px;border-radius:12px;background:linear-gradient(135deg,#eef7f2,#f5f1fb)}
.mb-teacher-differentiation-grid strong{color:var(--mb-purple-dark)}
.mb-teacher-differentiation-grid p{margin:5px 0 0;color:var(--mb-muted)}
.mb-teacher-support-grid{margin-top:16px}
.mb-teacher-connection-list article{padding:10px;margin-bottom:8px;border-radius:10px;background:#f7f9fb}
.mb-teacher-connection-list strong{color:#365a86}
.mb-teacher-connection-list p{margin:4px 0 0;color:var(--mb-muted)}
.mb-teacher-standards{margin-top:16px;background:#f8fafc}
.mb-teacher-notes-callout{display:flex;gap:13px;margin-top:16px;padding:17px;border-radius:15px;background:linear-gradient(135deg,#fff7d8,#f4eefb)}
.mb-teacher-notes-callout>span{font-size:24px}
.mb-teacher-notes-callout strong{color:var(--mb-purple-dark)}
.mb-teacher-notes-callout p{margin:4px 0 0;color:var(--mb-muted)}
.mb-teacher-finish{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-top:18px;padding:20px;border-radius:17px;background:linear-gradient(135deg,#365a86,#0f6f74);color:#fff}
.mb-teacher-finish h3{margin:4px 0;color:#fff}
.mb-teacher-finish p{margin:0;color:rgba(255,255,255,.82)}
.mb-teacher-finish a{border-radius:10px;padding:10px 14px;background:#fff;color:var(--mb-purple-dark)!important;font-weight:900;text-decoration:none!important}
@media(max-width:800px){.mb-teacher-intro,.mb-teacher-finish{flex-direction:column;align-items:flex-start}.mb-teacher-planning-grid,.mb-teacher-support-grid,.mb-teacher-differentiation-grid{grid-template-columns:1fr}.mb-teacher-pacing-card{grid-column:auto}.mb-teacher-pacing-list article,.mb-teacher-intervention-list article{grid-template-columns:1fr}}
.mb-vocab-add-note{margin:0 0 18px;padding:9px 13px;border:1px solid #6d28d9;border-radius:9px;background:#fff;color:#5b21b6;font-weight:800;cursor:pointer}.mb-vocab-add-note:hover,.mb-vocab-add-note:focus{background:#f2ebff}