/* Adapted from the 21st.dev components used by the school catalog.
   Source and license: subject-refresh-SOURCES.md / subject-refresh-LICENSE.txt. */
.subject-refresh {
  --sr-ink:#142e2a;--sr-muted:#60736b;--sr-green:#176454;--sr-paper:#fffefa;
  --sr-line:#dce5db;--sr-sage:#e6eedf;--sr-lilac:#eeeaf6;--sr-peach:#f8e9e0;
  --sr-shadow:0 4px 8px -4px #153e2910,0 18px 44px -24px #153e2926;
  --bg-warm:#f4f6ef;--text-primary:var(--sr-ink);--text-muted:var(--sr-muted);--text-light:#6d7b72;
  --border-soft:var(--sr-line);--teal:var(--sr-green);--teal-hover:#104f43;--teal-soft:#eaf2e7;
  --primary:var(--sr-green);--primary-dark:#104f43;--sl-accent:#28a88e;
  --sr-promo-height:0px;--sr-sticky-height:0px;
  font-family:Manrope,system-ui,sans-serif;background:var(--sr-paper);color:var(--sr-ink);padding:0;margin:0;line-height:1.6;
}
.subject-refresh *, .subject-refresh *::before,.subject-refresh *::after {box-sizing:border-box}
.subject-refresh [hidden] {display:none!important}
.subject-refresh .in {animation:none}
.subject-refresh :is(button,input,select) {font-family:inherit}
.subject-refresh button {cursor:pointer}
.subject-refresh a {text-decoration:none}
.subject-refresh :is(a,button,input,select,[tabindex]):focus-visible {outline:3px solid var(--sr-green);outline-offset:4px}
.subject-refresh .sl-icon {width:23px;height:23px;vertical-align:middle;flex-shrink:0;display:inline-block}
.sr-wrap,.subject-refresh .page {width:calc(100% - 80px);max-width:1200px;margin-inline:auto}
.subject-refresh .page {padding:0 0 40px}
.sr-skip {position:fixed;top:8px;left:16px;padding:12px 20px;background:white;z-index:9999;transform:translateY(-160%);border-radius:12px}
.sr-skip:focus {transform:translateY(0)}
.sr-header {min-height:100px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--sr-line)}
.sr-brand {display:flex;align-items:center;gap:12px;color:var(--sr-ink);font-size:17px;font-weight:800;line-height:1.35;letter-spacing:-.4px}
.sr-brand small {display:block;margin-top:5px;font-size:10px;font-weight:500;letter-spacing:.2px;color:var(--sr-muted)}
.sr-brand-mark {width:46px;height:46px;display:grid;place-items:center;border:1px solid #cad9c8;background:var(--sr-sage);border-radius:15px;transform:rotate(-5deg)}
.sr-brand-mark .sl-icon {width:32px;height:32px;transform:rotate(5deg)}
.sr-nav {display:flex;align-items:center;gap:28px;font-size:13px;font-weight:600}
.sr-nav>a {color:var(--sr-ink);padding:12px 0}
.sr-nav .sr-button {padding:12px 20px}
.sr-button {display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:12px 20px;border:1px solid var(--sr-line);border-radius:13px;font-size:13px;font-weight:700;color:var(--sr-ink);background:#fffefa;line-height:1.4;text-align:center}
.sr-button:hover {background:#eef4ed}
.sr-breadcrumb {display:flex;gap:10px;align-items:center;min-height:70px;font-size:11px;color:var(--sr-muted)}
.subject-refresh .back {margin:0;padding:12px 0;font-size:11px;flex-shrink:0;gap:8px;border-radius:0}
.sr-breadcrumb .sl-icon {width:17px;height:17px}
.sr-breadcrumb-current {overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.subject-refresh .hero {background:#eef3e8;color:var(--sr-ink);border:1px solid var(--sr-line);border-radius:28px;padding:44px 42px;margin:0;overflow:hidden;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(260px,.8fr);column-gap:55px;align-items:center;box-shadow:none}
.subject-refresh .hero::before {background:radial-gradient(#8caa801c 1px,transparent 1px);background-size:16px 16px;mask-image:linear-gradient(90deg,transparent,#000);pointer-events:none}
.subject-refresh .hero::after,.subject-refresh .hero-particle,.subject-refresh .hero-glow,.subject-refresh .hero-dash {display:none}
.sr-hero-copy {position:relative;z-index:1;min-width:0}
.sr-eyebrow {display:flex;gap:8px;align-items:center;color:var(--sr-green);font-size:10px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;margin-bottom:20px}
.sr-eyebrow .sl-icon {width:19px;height:19px}
.subject-refresh .hero-row {display:block}
.subject-refresh .hero-emoji {display:none}
.subject-refresh .hero h1 {font-size:clamp(30px,3.6vw,46px);line-height:1.12;letter-spacing:-1.8px;max-width:650px;opacity:1;transform:none;margin:0 0 20px;text-wrap:balance}
.subject-refresh .hero-desc {font-size:14px;line-height:1.8;color:#54695b;opacity:1;transform:none;max-width:530px}
.subject-refresh .hero-stats {display:flex;flex-wrap:wrap;gap:24px;margin:25px 0 28px;padding:0;background:none;border:0}
.subject-refresh .hero-pill {display:flex;align-items:baseline;gap:6px;background:none;border:0;padding:0;opacity:1;transform:none;border-radius:0;box-shadow:none}
.subject-refresh .hero-pill b {font-size:24px;color:var(--sr-ink);font-weight:800;letter-spacing:-.8px;line-height:1.2}
.subject-refresh .hero-pill span {font-size:10px;letter-spacing:0;text-transform:none;color:var(--sr-muted);opacity:1}
.subject-refresh :is(.hero-cta,.hero-sub-wrap) {opacity:1;transform:none;margin:0;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.subject-refresh :is(.hero-btn,.hero-meth-btn,.sticky-btn,.guest-submit,.sbp-bind-btn,.exp-lava-btn,.plan-btn.pr,.btn-primary,.exp-bundle-offer-btn) {background:var(--sr-green);color:white;border:1px solid var(--sr-green);border-radius:13px;min-height:50px;box-shadow:none;font-weight:700;font-family:inherit;font-size:13px;line-height:1.45;padding:13px 20px;display:inline-flex;gap:10px;justify-content:center;align-items:center}
.subject-refresh :is(.hero-btn,.hero-meth-btn,.sticky-btn,.guest-submit,.sbp-bind-btn,.exp-lava-btn,.plan-btn.pr,.btn-primary):hover {background:#104f43;color:white;box-shadow:none;transform:translateY(-1px)}
.subject-refresh .hero-btn .sl-icon {--sl-accent:#b4ddbe;width:20px;height:20px;order:1}
.subject-refresh .hero-hint {font-size:11px;color:var(--sr-muted);opacity:1}
.subject-refresh .hero-owned {flex-basis:100%;background:none;color:var(--sr-green);padding:0;font-size:12px;display:flex;align-items:center;gap:7px;opacity:1}
.sr-course-cover {position:relative;z-index:1;background:var(--sr-paper);padding:24px;border:1px solid #d2ddce;box-shadow:var(--sr-shadow);border-radius:22px;transform:rotate(2deg);align-self:stretch;display:flex;flex-direction:column;justify-content:center;min-height:280px}
.sr-cover-top {display:flex;justify-content:space-between;align-items:center;color:#72816e;font-size:9px;font-weight:600;letter-spacing:.8px}
.sr-cover-top>.sl-icon {width:20px;height:20px}
.sr-cover-icon {display:flex;justify-content:center;align-items:center;flex:1;min-height:140px;padding:10px;position:relative}
.sr-cover-icon::before {content:'';width:120px;height:120px;background:var(--sr-sage);border-radius:50%;position:absolute}
.sr-cover-icon .sl-icon {width:108px;height:108px;position:relative;transform:rotate(-5deg);--sl-accent:#7c9a5a}
.sr-cover-title {font-size:16px;font-weight:800;letter-spacing:-.4px;line-height:1.35;margin:8px 0 18px;text-align:center;text-wrap:balance}
.sr-cover-bottom {display:flex;align-items:center;justify-content:center;gap:6px;border-top:1px solid var(--sr-line);padding-top:13px;font-size:10px;color:var(--sr-muted)}
.sr-cover-bottom>.sl-icon {width:18px;height:18px}
.sr-section-nav {display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:20px 0 35px}
.sr-section-nav a {display:flex;align-items:center;gap:8px;min-height:44px;border:1px solid var(--sr-line);border-radius:11px;padding:10px 15px;font-size:11px;color:var(--sr-muted);font-weight:600}
.sr-section-nav a:hover {background:var(--sr-soft,#eef4ed);color:var(--sr-green);border-color:#b0c2a9}
.sr-section-nav .sl-icon {width:19px;height:19px}
.subject-refresh .login-bar {display:none}
.sr-section-heading {display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin:28px 0 24px}
.sr-section-heading h2 {font-size:28px;font-weight:800;letter-spacing:-1px;line-height:1.25;margin:8px 0 0}
.sr-section-heading p {font-size:12px;line-height:1.75;color:var(--sr-muted);margin:0;max-width:350px}
.sr-course-grid {display:grid;grid-template-columns:minmax(280px,350px) minmax(0,1fr);gap:24px;align-items:start;scroll-margin-top:24px}
.sr-samples {display:flex;flex-direction:column;gap:20px;min-width:0}
.subject-refresh .block {border-radius:24px;border:1px solid var(--sr-line);background:#fff;padding:28px;margin-bottom:24px;box-shadow:0 3px 12px -8px #173f2b33;min-width:0}
.subject-refresh .sr-course-grid .block {margin:0}
.subject-refresh .block-title {font-size:18px;letter-spacing:-.55px;line-height:1.4;color:var(--sr-ink);font-weight:800;margin:0 0 8px}
.subject-refresh .block-sub {font-size:12px;line-height:1.7;color:var(--sr-muted);margin:6px 0 20px}
.subject-refresh .sec-block {position:sticky;top:24px;padding:24px 18px 12px;background:#f6f8f1;overflow:hidden}
.subject-refresh .sec-hdr {padding:0 5px;margin-bottom:16px}
.sr-search {display:flex;align-items:center;gap:8px;min-height:46px;border:1px solid #d3ddcd;background:white;border-radius:12px;padding:0 11px;margin:0 0 12px}
.sr-search>.sl-icon {width:18px;height:18px;color:var(--sr-muted)}
.sr-search input {width:100%;min-width:0;border:0;background:transparent;padding:12px 0;font-size:11px;outline:none!important;color:var(--sr-ink)}
.sr-search:focus-within {outline:2px solid var(--sr-green);outline-offset:2px}
.sr-search-clear {border:0;background:transparent;display:grid;place-items:center;width:32px;height:40px;padding:0;color:var(--sr-muted)}
.sr-search-clear .sl-icon {width:16px;height:16px}
.sr-search-status {font-size:10px;color:var(--sr-muted);padding:0 5px 10px;min-height:25px}
.subject-refresh .sec-list {display:flex;flex-direction:column;gap:4px;max-height:580px;overflow-y:auto;overscroll-behavior:contain;padding:3px 5px 8px;margin:0 -5px;scrollbar-width:thin;scrollbar-color:#bdcbb6 transparent}
.subject-refresh .sec-item {font-family:inherit;display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:transparent;border:1px solid transparent;border-radius:12px;padding:12px 9px;opacity:1;transform:none;min-height:65px;color:var(--sr-ink);transition:background .15s,border-color .15s}
.subject-refresh .sec-item:hover {background:#fff;border-color:#d8e2d3;transform:none;box-shadow:none}
.subject-refresh .sec-item.active {background:#e6eedf;border-color:#b8cbaa}
.subject-refresh .sec-item.loading {opacity:.55}
.subject-refresh .sec-num {display:grid;place-items:center;background:#fff;border:1px solid #d9e1d4;color:var(--sr-muted);width:32px;height:36px;min-width:32px;border-radius:9px;font-size:10px;font-weight:700;flex-shrink:0}
.subject-refresh .sec-num:before,.subject-refresh .sec-num:after {display:none}
.subject-refresh .sec-nm {font-size:12px;line-height:1.55;font-weight:700}
.subject-refresh .sec-mt {font-size:10px;color:var(--sr-muted);margin-top:3px}
.subject-refresh .sec-more {min-height:44px;background:#fff;border:1px solid var(--sr-line);border-radius:11px;font-size:11px;color:var(--sr-green);font-family:inherit;margin:8px 0}
.subject-refresh .quiz {background:#fffdf7;border-color:#e3dfcd}
.subject-refresh .quiz-tag {background:#f4edda;color:#74613e;border:1px solid #e3dac0;display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:700;padding:6px 10px}
.subject-refresh .quiz-tag .sl-icon {width:18px;height:18px;--sl-accent:#c1a45c}
.subject-refresh .quiz-meta {font-size:11px;margin:17px 0 13px;color:var(--sr-muted)}
.subject-refresh .quiz-q {font-size:15px;line-height:1.9;margin-bottom:21px;overflow-wrap:anywhere}
.subject-refresh .quiz-blank {background:#efe9d8;border-color:#c1af77;color:#786037;min-width:34px}
.subject-refresh .quiz-o {width:100%;text-align:left;color:var(--sr-ink);font-family:inherit;line-height:1.65;min-height:55px;padding:12px 14px;border-radius:12px;background:white;border:1px solid #e5e5da;font-size:12px}
.subject-refresh .quiz-o:hover {border-color:#aabd9e;background:#f4f7ee;transform:none}
.subject-refresh .quiz-o.ok {background:#e9f4e7;border-color:#8fb38a}
.subject-refresh .quiz-o.no {background:#fcedea;border-color:#d3a096}
.subject-refresh .quiz-let {font-size:10px;border-radius:7px;background:#f4f3ea}
.subject-refresh .quiz-res {font-size:12px;line-height:1.75;padding:14px;border-radius:12px;background:#edf3e7}
.subject-refresh .quiz-res .sl-icon {width:18px;height:18px}
.subject-refresh .quiz-step,.subject-refresh .quiz-count {font-size:10px;color:var(--sr-muted)}
.subject-refresh .quiz-session,.subject-refresh .quiz-next,.subject-refresh .prv-prog {display:none}
.sr-sample-footer {border-top:1px solid var(--sr-line);padding-top:16px;margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:15px;color:var(--sr-muted);font-size:11px}
.sr-sample-footer a {font-size:11px;font-weight:700;display:flex;align-items:center;gap:6px;min-height:44px}
.sr-sample-footer .sl-icon {width:18px;height:18px}
.subject-refresh :is(.prv-page,.prv-counter,.prv-peek,.prv-bottom) {opacity:1;transform:none}
.subject-refresh .prv-page {border:1px solid var(--sr-line);box-shadow:none;background:var(--sr-paper);border-radius:15px;padding:25px}
.subject-refresh .prv-page-body,.subject-refresh .preview-body {font-size:14px;line-height:1.85;overflow-wrap:anywhere}
.subject-refresh .prv-page-title,.subject-refresh .preview-h {font-size:17px;letter-spacing:-.3px;line-height:1.5}
.subject-refresh .prv-page-sec,.subject-refresh .preview-sec {font-size:10px;color:var(--sr-green);letter-spacing:1px}
.subject-refresh .prv-counter {font-size:9px;color:var(--sr-muted);background:#f0f5eb;border:1px solid var(--sr-line);white-space:normal;text-align:center}
.subject-refresh .prv-bottom {background:#eef4e7;border:1px solid #d7e1ce;box-shadow:none;border-radius:14px;padding:17px;gap:15px;align-items:center}
.subject-refresh .prv-bottom-title {font-size:12px}
.subject-refresh .prv-bottom-sub {font-size:10px;line-height:1.7}
.subject-refresh .prv-bottom-cta {background:var(--sr-green);border-radius:11px;min-height:44px;font-size:11px;padding:10px 15px;flex-shrink:0;box-shadow:none}
.subject-refresh .preview-inner {border:1px solid var(--sr-line);border-radius:15px;padding:23px;background:var(--sr-paper)}
.subject-refresh .preview-body img,.subject-refresh .prv-page-body img {max-width:100%;height:auto}
.sr-tools {margin:65px 0 55px;scroll-margin-top:25px}
.sr-tools-grid {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:start}
.subject-refresh .sr-tools-grid>.block {margin:0;padding:26px;background:#fff;border-color:var(--sr-line)}
.subject-refresh #mthDemoBlock {grid-column:1/-1;background:#f8f9f3;display:block}
.subject-refresh #mthDemoBlock>.mth-demo-hdr,.subject-refresh #mthDemoBlock>.block-sub {grid-column:1/-1}
.subject-refresh #mthDemoBlock>.mth-body {grid-column:1/-1}
.sr-method-layout {display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:18px;align-items:start}
.sr-method-layout>div {min-width:0}
.sr-method-text-only {grid-template-columns:1fr}
.subject-refresh .sr-method-practice>.mth-text {margin-top:0}
.subject-refresh .sr-method-media>.mth-video {margin-bottom:0;aspect-ratio:16/10}
.subject-refresh .sr-method-practice .mth-lvl {background:#f0f4e8;border-color:#d6e0cc}
.subject-refresh .sr-method-practice .mth-streak {background:#f6efe0;border-color:#e4dbc2}
.subject-refresh [class$="-demo-grad"] {position:static;height:auto;min-height:0;padding:18px 0 0;background:none;opacity:1;pointer-events:auto;display:flex;align-items:center;justify-content:flex-start}
.subject-refresh [class*="-demo-cta"] {opacity:1;transform:none;background:var(--sr-green);box-shadow:none;border-radius:12px;min-height:44px;font-family:inherit;font-size:12px;padding:11px 17px}
.subject-refresh [class*="-demo-cta"]:hover {background:#104f43;box-shadow:none;transform:translateY(-1px)}
.subject-refresh .ai-demo-chat>.ai-demo-grad {padding-top:12px}
.subject-refresh .skl-ring-label {color:var(--sr-muted)}
.subject-refresh :is(.mth-an,.skl-an,.stt-an,.srs-an,.lg-an,.pln-an,.mth-lvl-emoji) {opacity:1;transform:none}
.subject-refresh :is(.mth-demo-icon,.skl-demo-icon,.ai-demo-icon,.stt-demo-icon,.srs-demo-icon,.lg-demo-icon,.pln-demo-icon) {background:#e7edde;color:var(--sr-green);border:1px solid #d5dfc9;box-shadow:none;border-radius:13px;width:46px;height:46px;flex-shrink:0;display:grid;place-items:center}
.subject-refresh :is(.mth-demo-icon,.skl-demo-icon,.ai-demo-icon,.stt-demo-icon,.srs-demo-icon,.lg-demo-icon,.pln-demo-icon)>.sl-icon {color:var(--sr-green);width:29px;height:29px;animation:none}
.subject-refresh .ai-demo-icon {background:#ede8f4;border-color:#ded5e7;--sl-accent:#a490cb}
.subject-refresh .pln-demo-icon {background:#f5edda;border-color:#e3d9bd;--sl-accent:#b7a15f}
.subject-refresh :is(.ai-spk,.pln-spk,.mth-spk,.skl-spk,.stt-spk,.srs-spk,.lg-spk,.plans-particles) {display:none}
.subject-refresh .ai-demo-chat {background:#f3f0f7;border:1px solid #e5ddec;padding:16px}
.subject-refresh .ai-m-b {font-size:12px;line-height:1.8}
.subject-refresh .ai-demo-inp {border:1px solid #ded7e7;background:#f6f4f9;min-height:48px}
.subject-refresh .ai-demo-inp-send {background:#78628f}
.subject-refresh .ai-m-av-ai {background:#88769b}
.subject-refresh :is(.pln-body,.stt-body,.srs-body,.lg-body,.mth-body) {border:1px solid var(--sr-line);background:#f7f8f3}
.subject-refresh :is(.ai-demo-cta,.pln-cta,.stt-cta,.srs-cta,.lg-cta,.mth-cta,.skl-cta) {background:var(--sr-green);color:white;font-family:inherit;box-shadow:none;border-radius:12px;min-height:44px;font-size:12px}
.subject-refresh :is(.plan,.plans-title,.plans-subtitle,.plans-suptitle,.plan-feats li,.reassure-item) {opacity:1;transform:none}
.subject-refresh .plans-block {padding:38px 30px;background:#edf3e8;overflow:visible;scroll-margin-top:25px;margin:0}
.subject-refresh .plans-hdr {margin-bottom:28px}
.subject-refresh .plans-title {font-size:30px;letter-spacing:-1px;line-height:1.3;color:var(--sr-ink);margin:12px 0}
.subject-refresh .plans-suptitle {background:#fffefa;border:1px solid #d5e1cc;color:var(--sr-green);box-shadow:none;font-size:10px}
.subject-refresh .plans-subtitle {font-size:11px;line-height:2.2;color:var(--sr-muted);max-width:720px;margin:0 auto}
.subject-refresh .plans-subtitle .sl-icon {width:17px;height:17px;margin-right:3px}
.subject-refresh .plans-grid {gap:18px;grid-template-columns:repeat(var(--sr-plan-count,3),minmax(0,1fr))}
.subject-refresh .plan {background:#fffefa;border:1px solid #d3ddcd;border-radius:19px;box-shadow:none;overflow:hidden;transform:none!important}
.subject-refresh .plan.pop {border:2px solid var(--sr-green);box-shadow:0 12px 32px -23px #16413255}
.subject-refresh .plan:hover {border-color:#8ba580;box-shadow:none}
.subject-refresh .plan-top {padding:27px 23px 19px;background:transparent}
.subject-refresh .plan.pop .plan-top {background:#f3f7ed}
.subject-refresh .plan-tag {background:var(--sr-green);color:white;font-size:9px;padding:5px 10px;position:static;display:inline-flex;margin:0 0 10px;transform:none}
.subject-refresh .plan-top .plan-name {font-size:18px;letter-spacing:-.5px}
.subject-refresh .plan-desc {font-size:11px;line-height:1.65;color:var(--sr-muted)}
.subject-refresh .plan-price {font-size:30px;color:var(--sr-ink);letter-spacing:-1px}
.subject-refresh .plan-per {font-size:11px;color:var(--sr-muted)}
.subject-refresh .plan-daily {font-size:10px;background:#edf3e7;color:var(--sr-green);border-radius:6px}
.subject-refresh .plan-feats-wrap {padding:20px 23px 23px}
.subject-refresh .plan-feats-title {font-size:9px;color:var(--sr-muted)}
.subject-refresh .plan-feats li {font-size:11px;line-height:1.75;margin-bottom:9px;padding-left:25px;position:relative}
.subject-refresh .plan-feats li::before,.subject-refresh .plan-feats li::after {display:none}
.subject-refresh .plan-feats .sl-icon {position:absolute;left:0;top:1px;width:17px;height:17px;color:var(--sr-green)}
.subject-refresh .plan-feats li.x {color:#7b8078}
.subject-refresh .plan-feats li.x .sl-icon {color:#858b82;--sl-accent:#c4c9c0}
.subject-refresh .plan-prog-preview {display:none}
.subject-refresh .plan-btn.sc {border:1px solid #cdd8c6;min-height:50px;background:#f4f6ee;border-radius:13px;font-size:12px}
.subject-refresh .reassure {padding:24px 0;margin:0 0 35px;gap:24px;display:flex;flex-wrap:wrap;justify-content:center}
.subject-refresh .reassure-item {font-size:10px;color:var(--sr-muted);gap:7px}
.subject-refresh .reassure-item .sl-icon {width:19px;height:19px;color:var(--sr-green)}
.subject-refresh .rel-scroll {gap:13px;padding:4px 2px 13px;scroll-snap-type:x proximity;scrollbar-width:thin;scrollbar-color:#bcccb2 transparent}
.subject-refresh .rel-card {min-width:170px;max-width:200px;min-height:162px;flex:1 0 170px;scroll-snap-align:start;background:#f4f7ee;border:1px solid #dfe6d9;border-radius:17px;padding:20px;text-align:left;color:var(--sr-ink);transition:transform .18s,border-color .18s}
.subject-refresh .rel-card:nth-child(3n+2) {background:#f2eef6;--sl-accent:#ad9dc4}
.subject-refresh .rel-card:nth-child(3n) {background:#f8eee5;--sl-accent:#c7a078}
.subject-refresh .rel-card:hover {transform:translateY(-3px);border-color:#9eb594;box-shadow:var(--sr-shadow)}
.subject-refresh .rel-emoji {font-size:0;margin-bottom:15px}
.subject-refresh .rel-emoji .sl-icon {width:36px;height:36px}
.subject-refresh .rel-name {font-size:12px;line-height:1.5;font-weight:700;min-height:35px}
.subject-refresh :is(.rel-meta,.fb-price,.rel-own) {font-size:10px;margin-top:7px;color:var(--sr-muted)}
.subject-refresh .sr-extra {display:grid;grid-template-columns:52px 1fr auto;column-gap:20px;align-items:center;background:#f7f4eb;padding:27px}
.sr-extra-icon {grid-row:1/3;width:52px;height:58px;border:1px solid #e3dcc8;border-radius:14px;background:#fffefa;display:grid;place-items:center;--sl-accent:#c7ab72}
.sr-extra-icon .sl-icon {width:31px;height:31px}
.subject-refresh .sr-extra .block-title {font-size:17px;grid-column:2}
.subject-refresh .sr-extra .block-sub {grid-column:2;font-size:11px;margin:6px 0 0;max-width:720px}
.subject-refresh .sr-extra>a {grid-column:3;grid-row:1/3;border:1px solid #dadfcf;border-radius:12px;min-height:46px;color:var(--sr-green);font-size:11px}
.sr-footer {border-top:1px solid var(--sr-line);padding:28px 0 calc(45px + var(--sr-promo-height) + var(--sr-sticky-height));display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:11px;color:var(--sr-muted)}
.sr-footer nav {display:flex;gap:24px;flex-wrap:wrap}
.sr-footer a {color:var(--sr-muted);min-height:44px;display:inline-flex;align-items:center}
.subject-refresh .sticky {bottom:var(--sr-promo-height);background:#fffefaed;border-top:1px solid #d2ddca;padding:12px 0;box-shadow:0 -8px 30px -22px #19372744;backdrop-filter:blur(15px)}
.subject-refresh .sticky-in {max-width:1200px;width:calc(100% - 80px);padding:0;gap:20px}
.subject-refresh .sticky-nm {font-size:13px;color:var(--sr-ink)}
.subject-refresh .sticky-pr {font-size:11px;color:var(--sr-muted)}
.subject-refresh .sticky-btn {min-height:46px;flex-shrink:0}
.subject-refresh .guest-overlay,.subject-refresh .exp-modal-overlay {background:#10282070;backdrop-filter:blur(7px);z-index:2147483000;overscroll-behavior:contain;padding:24px}
.subject-refresh :is(.guest-card,.exp-modal-card) {background:var(--sr-paper);border:1px solid #d4dfcb;border-radius:24px;box-shadow:0 25px 90px #0c231d33;max-height:calc(100dvh - 48px);overflow:auto;overscroll-behavior:contain}
.subject-refresh .guest-card {max-width:450px}
.subject-refresh .exp-modal-card {max-width:560px;width:100%;font-family:inherit;--primary:#176454;--primary-dark:#104f43;--primary-light:#edf3e6;--gray-800:#142e2a;--gray-500:#60736b;--gray-400:#6d7b72}
.subject-refresh :is(.guest-header,.exp-header) {background:#edf3e6;color:var(--sr-ink);padding:30px 30px 24px;border-bottom:1px solid var(--sr-line);border-radius:23px 23px 0 0}
.subject-refresh :is(.guest-header h3,.exp-header h3) {font-size:23px;font-weight:800;line-height:1.3;letter-spacing:-.6px;margin:12px 0 8px;padding-right:15px}
.subject-refresh :is(.guest-header p,.exp-sub) {color:var(--sr-muted);font-size:12px;line-height:1.7}
.subject-refresh .guest-header-emoji {display:grid;place-items:center;width:52px;height:52px;background:#fffefa;border:1px solid #d8e2cf;border-radius:16px;margin:0 auto 12px}
.subject-refresh .guest-header-emoji .sl-icon {width:34px;height:34px}
.subject-refresh :is(.guest-close,.exp-close) {width:40px;height:40px;min-height:40px;display:grid;place-items:center;top:13px;right:13px;background:#ffffff99;color:var(--sr-ink);border:1px solid #d7e1d0;border-radius:11px;padding:0}
.subject-refresh :is(.guest-close,.exp-close) .sl-icon {width:20px;height:20px}
.subject-refresh .guest-body {padding:25px 30px}
.subject-refresh .guest-label {font-size:11px;color:var(--sr-ink);font-weight:700}
.subject-refresh :is(.guest-input,.exp-bundle-search input) {border:1px solid #cfdac8;background:#fff;border-radius:12px;font-size:13px;min-height:48px}
.subject-refresh .guest-input:focus {border-color:var(--sr-green);box-shadow:0 0 0 3px #17645410}
.subject-refresh .guest-trust {font-size:10px;display:flex;justify-content:center;gap:15px;flex-wrap:wrap}
.subject-refresh .guest-trust span {display:flex;align-items:center;gap:5px}
.subject-refresh .guest-trust .sl-icon {width:17px;height:17px}
.subject-refresh .guest-footer a {font-size:12px}
.subject-refresh .exp-pay-tabs {background:#eef2e8;border-radius:12px;border:1px solid #d6dfcf;padding:4px;margin:18px 24px 0;gap:4px}
.subject-refresh .exp-pay-tab {border:0;border-radius:9px;font-family:inherit;font-size:11px;color:var(--sr-muted);min-height:54px;background:transparent}
.subject-refresh .exp-pay-tab.active {color:var(--sr-green);background:white;box-shadow:0 2px 6px #1d422411}
.subject-refresh .exp-tab-sub {font-size:9px}
.subject-refresh .exp-modal-card .plan-card {background:#fff;border:1px solid #d8e1d1;border-radius:13px;padding:17px 14px;box-shadow:none;gap:12px;min-height:89px}
.subject-refresh .exp-modal-card .plan-card.selected {background:#edf4e7;border:2px solid var(--sr-green);padding:16px 13px}
.subject-refresh .exp-modal-card .plan-icon {border:1px solid #d6e0ce;background:#f4f7ee;border-radius:10px;width:38px;height:42px;display:grid;place-items:center;color:var(--sr-green);flex-shrink:0}
.subject-refresh .exp-modal-card .plan-price {font-size:20px;white-space:nowrap;letter-spacing:-.4px}
.subject-refresh .exp-modal-card .plan-price-period {font-size:10px}
.subject-refresh .exp-modal-card .plan-name {font-size:12px;font-weight:700}
.subject-refresh .exp-modal-card .plan-desc {font-size:10px;margin:5px 0 0;line-height:1.5;min-height:0}
.subject-refresh .exp-modal-card .plan-check {border-color:#c2d0b7}
.subject-refresh .plan-card.selected .plan-check {background:var(--sr-green);border-color:var(--sr-green);color:#fff;--sl-accent:#e1f2d9}
.subject-refresh .plan-check .sl-icon {width:15px;height:15px}
.subject-refresh .exp-modal-card .plan-badge {background:var(--sr-green);font-size:8px}
.subject-refresh .exp-bundle-offer {background:#f0edf5;border-color:#ddd4e6}
.subject-refresh .exp-bundle-offer-t {color:var(--sr-ink);font-size:13px}
.subject-refresh .exp-bundle-offer-s {color:var(--sr-muted);font-size:11px}
.subject-refresh .exp-bundle-badge {background:var(--sr-green)}
.subject-refresh .exp-rec {border-color:#d4decc;color:var(--sr-muted);font-size:11px;min-height:36px}
.subject-refresh .exp-rec.on {background:var(--sr-green);border-color:var(--sr-green);color:#fff}
.subject-refresh .exp-cart {background:#f4f7ed;border-color:#d5dfcc}
.subject-refresh .exp-cart-x {min-width:36px;min-height:36px}
.subject-refresh .sbp-hint {font-size:10px;line-height:1.7;color:var(--sr-muted)}
.subject-refresh .sbp-hint input[type=checkbox] {accent-color:var(--sr-green);width:18px;height:18px}
.subject-refresh .exp-consent,.subject-refresh .exp-footer-link {font-size:11px;color:var(--sr-muted)}
.subject-refresh #C>.loading {padding:80px 20px;text-align:center;font-size:13px;color:var(--sr-muted)}
.subject-refresh .error {padding:65px 24px;border:1px solid var(--sr-line);border-radius:24px;background:#f3f7ed;text-align:center;margin:20px 0}
.subject-refresh .error h2 {font-size:26px;letter-spacing:-.6px}
.subject-refresh .error p {font-size:13px;margin:12px 0 24px}
.sr-empty-sample {padding:30px;color:var(--sr-muted);font-size:13px;line-height:1.8;border:1px dashed #cfdac7;border-radius:22px;background:#f8faf4}
@media(min-width:1100px) {.subject-refresh #mthDemoBlock .mth-video {max-width:720px;margin-inline:auto}.subject-refresh #mthDemoBlock .mth-body {max-width:850px;width:100%;margin:auto}}
@media(max-width:1000px) {
 .subject-refresh .hero {column-gap:30px;padding:35px 30px;grid-template-columns:minmax(0,1.25fr) minmax(215px,.75fr)}
 .subject-refresh .hero h1 {font-size:35px;letter-spacing:-1.2px}
 .sr-course-cover {padding:18px;min-height:260px}.sr-cover-icon .sl-icon {width:85px;height:85px}
 .sr-course-grid {grid-template-columns:minmax(230px,280px) minmax(0,1fr);gap:20px}
 .subject-refresh .block {padding:23px}.subject-refresh .sec-block {padding:20px 14px 12px}
 .subject-refresh .plans-block {padding:30px 20px}.subject-refresh .plans-grid {gap:12px}
 .subject-refresh .plan-top {padding:22px 17px 17px}.subject-refresh .plan-feats-wrap {padding:18px 17px}
 .sr-section-heading p {max-width:280px}.subject-refresh .prv-bottom {flex-direction:column;align-items:stretch}
 .subject-refresh .sr-extra {grid-template-columns:45px 1fr}.subject-refresh .sr-extra>a {grid-column:2;grid-row:3;justify-self:start;margin-top:10px}
}
@media(max-width:760px) {
 .sr-wrap,.subject-refresh .page,.subject-refresh .sticky-in {width:calc(100% - 36px)}
 .sr-header {min-height:88px;gap:10px}.sr-brand {font-size:14px;gap:9px}.sr-brand small {font-size:9px}.sr-brand-mark {width:40px;height:40px;border-radius:12px}.sr-brand-mark .sl-icon {width:27px;height:27px}
 .sr-nav {gap:8px}.sr-nav>a:not(.sr-button) {display:none}.sr-nav .sr-button {padding:10px 12px;min-height:44px;font-size:11px}.sr-nav .sr-button .sl-icon {width:18px;height:18px}
 .sr-breadcrumb {min-height:57px;font-size:10px;gap:7px}.subject-refresh .back {font-size:10px}
 .subject-refresh .hero {grid-template-columns:minmax(0,1fr) 155px;padding:27px 24px;gap:22px;border-radius:22px}
 .subject-refresh .hero h1 {font-size:30px;letter-spacing:-1px}.subject-refresh .hero-desc {font-size:12px;line-height:1.75}.sr-eyebrow {font-size:9px;letter-spacing:1px;margin-bottom:15px}
 .sr-course-cover {padding:14px;min-height:220px;align-self:center}.sr-cover-icon {min-height:90px}.sr-cover-icon::before {width:80px;height:80px}.sr-cover-icon .sl-icon {width:72px;height:72px}.sr-cover-title {font-size:12px}.sr-cover-top {font-size:7px}.sr-cover-bottom {font-size:8px}
 .subject-refresh .hero-stats {gap:18px;margin:20px 0}.subject-refresh .hero-pill {gap:4px}.subject-refresh .hero-pill b {font-size:21px}.subject-refresh .hero-pill span {font-size:9px}
 .subject-refresh .hero-btn,.subject-refresh .hero-meth-btn {min-height:46px;font-size:12px;padding:12px 17px}
 .sr-section-nav {gap:6px;padding:18px 0 24px}.sr-section-nav a {padding:9px 11px;font-size:10px;gap:6px}
 .sr-section-heading {align-items:flex-start;flex-direction:column;gap:10px;margin:22px 0 19px}.sr-section-heading h2 {font-size:25px}.sr-section-heading p {max-width:480px;font-size:11px}
 .sr-course-grid {grid-template-columns:1fr;gap:18px}.subject-refresh .sec-block {position:static;padding:22px 18px 13px}.subject-refresh .sec-list {max-height:340px}.sr-search input {font-size:12px}
 .sr-tools {margin:45px 0}.sr-tools-grid {gap:18px;grid-template-columns:1fr}.subject-refresh #mthDemoBlock {display:block;grid-column:auto}
 .sr-method-layout {grid-template-columns:1fr;gap:20px}
 .subject-refresh .plans-grid {grid-template-columns:1fr;max-width:460px!important;margin-inline:auto!important;gap:18px}.subject-refresh .plans-block {padding:26px 18px}.subject-refresh .plans-title {font-size:26px}.subject-refresh .plan-top {padding:24px}.subject-refresh .plan-feats-wrap {padding:20px 24px 24px}.subject-refresh .plan-feats li {font-size:12px}
 .subject-refresh .prv-bottom {flex-direction:row}.subject-refresh .reassure {gap:16px 24px;padding:22px 8px}.subject-refresh .reassure-item {font-size:9px}
 .subject-refresh .sticky-btn {font-size:11px;padding:11px 14px;min-height:44px}.subject-refresh .sticky-nm {font-size:11px;line-height:1.4}.subject-refresh .sticky-pr {font-size:10px;margin-top:3px}.subject-refresh .sticky-txt {min-width:0}
 .sr-footer {flex-direction:column;align-items:flex-start;gap:10px;padding-top:25px}.sr-footer nav {gap:20px}
}
@media(max-width:480px) {
 .subject-refresh .hero {display:block;padding:26px 22px}.subject-refresh .hero h1 {font-size:32px;letter-spacing:-1.1px;max-width:100%;padding-right:8px}.subject-refresh .hero-desc {font-size:13px}
 .sr-course-cover {display:none}.subject-refresh .hero-emoji {display:flex;float:right;width:48px;height:52px;border:1px solid #ccd9c4;background:#fffefa;margin:0 0 8px 12px;border-radius:14px;opacity:1;transform:rotate(4deg)}.subject-refresh .hero-emoji .sl-icon {width:35px;height:35px;--sl-accent:#7c9a5a}
 .subject-refresh .hero-stats {gap:16px;flex-wrap:wrap}.subject-refresh .hero-pill b {font-size:22px}
 .sr-section-nav a {flex:1;justify-content:center;font-size:10px;padding:9px 7px;gap:4px}.sr-section-nav .sl-icon {width:17px;height:17px}
 .subject-refresh .block {padding:22px 18px;border-radius:20px}.subject-refresh .block-title {font-size:17px}.subject-refresh .quiz-q {font-size:14px}.subject-refresh .quiz-o {font-size:12px;line-height:1.65}
 .subject-refresh .prv-page,.subject-refresh .preview-inner {padding:19px 16px}.subject-refresh .prv-page-title,.subject-refresh .preview-h {font-size:15px}.subject-refresh .preview-body,.subject-refresh .prv-page-body {font-size:13px}
 .subject-refresh .prv-hdr {align-items:flex-start;gap:10px}.subject-refresh .prv-counter {font-size:8px;max-width:80px;padding:7px}.subject-refresh .prv-bottom {flex-direction:column;align-items:stretch}.sr-sample-footer {gap:10px;align-items:flex-start;flex-direction:column}
 .subject-refresh .sr-tools-grid>.block {padding:22px 18px}.subject-refresh .ai-m-b {font-size:11px}
 .subject-refresh .sr-extra {display:block}.sr-extra-icon {margin-bottom:17px}.subject-refresh .sr-extra .block-title {font-size:16px}.subject-refresh .sr-extra .block-sub {margin-top:9px}
 .subject-refresh .guest-overlay,.subject-refresh .exp-modal-overlay {padding:12px;align-items:center}.subject-refresh :is(.guest-card,.exp-modal-card) {max-height:calc(100dvh - 24px);border-radius:21px}
 .subject-refresh :is(.guest-header,.exp-header) {padding:25px 22px 20px}.subject-refresh :is(.guest-header h3,.exp-header h3) {font-size:21px}.subject-refresh .guest-body {padding:22px}.subject-refresh .guest-trust {gap:12px;font-size:9px}
 .subject-refresh .exp-modal-card .plan-card {gap:8px;padding:15px 10px;flex-wrap:wrap}.subject-refresh .exp-modal-card .plan-card.selected {padding:14px 9px}.subject-refresh .exp-modal-card .plan-icon {width:31px;height:36px}.subject-refresh .exp-modal-card .plan-icon .sl-icon {width:22px;height:22px}.subject-refresh .exp-modal-card .plan-check {width:18px;height:18px}
 .subject-refresh .exp-modal-card .plan-price {font-size:19px;margin-left:65px}.subject-refresh .exp-modal-card .plan-info {flex:1;min-width:130px}.subject-refresh .exp-modal-card .plan-price-period {font-size:10px}.subject-refresh .exp-pay-tabs {margin-inline:18px}.subject-refresh .exp-pay-tab {font-size:10px}
 .subject-refresh .plans-section {padding-inline:18px}.subject-refresh .sbp-bind-btn {font-size:12px;padding:12px}
}
@media(prefers-reduced-motion:reduce) {
 html {scroll-behavior:auto!important}
 .subject-refresh *, .subject-refresh *::before,.subject-refresh *::after {animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* Program search: everything the course has on a topic (videos, topics, pages, questions). */
.sr-found {border:1px solid var(--sr-line);background:#fff;border-radius:16px;padding:14px;margin:0 0 14px;transition:opacity .15s}
.sr-found.is-loading {opacity:.55}
.sr-found-head {padding:2px 4px 10px}
.sr-found-title {font-size:13px;font-weight:800;letter-spacing:-.2px;color:var(--sr-ink);line-height:1.4}
.sr-found-fix {font-size:10px;color:var(--sr-muted);margin-top:2px}
.sr-found-stats {display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.sr-found-chip {display:inline-flex;align-items:center;gap:5px;background:var(--sr-sage);border-radius:999px;padding:5px 10px 5px 7px;font-size:10px;color:var(--sr-muted);line-height:1.3}
.sr-found-chip b {color:var(--sr-ink);font-weight:800}
.sr-found-chip .sl-icon {width:14px;height:14px;color:var(--sr-green)}
.sr-found-group {border-top:1px solid var(--sr-line);padding-top:8px;margin-top:6px}
.sr-found-gh {display:flex;justify-content:space-between;align-items:baseline;gap:8px;padding:2px 4px 4px;font-size:9px;font-weight:800;letter-spacing:1.1px;text-transform:uppercase;color:var(--sr-green)}
.sr-found-gh em {font-style:normal;font-weight:600;letter-spacing:0;text-transform:none;color:var(--sr-muted);font-size:10px}
.sr-found-row {display:flex;align-items:flex-start;gap:10px;width:100%;text-align:left;background:transparent;border:1px solid transparent;border-radius:11px;padding:8px 6px;color:var(--sr-ink);font:inherit;transition:background .15s,border-color .15s}
.sr-found-row:hover {background:var(--bg-warm);border-color:var(--sr-line)}
.sr-found-ic {flex:0 0 30px;height:30px;display:grid;place-items:center;border-radius:9px;background:var(--sr-sage);color:var(--sr-green)}
.sr-found-ic .sl-icon {width:17px;height:17px}
.sr-found-tx {flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.sr-found-t {font-size:12px;font-weight:700;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sr-found-m {font-size:10px;color:var(--sr-muted);line-height:1.5;overflow:hidden}
.sr-found-sn {display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.sr-found mark {background:#fbe7a6;color:inherit;border-radius:3px;padding:0 1px}
.sr-found-lock {flex:0 0 auto;color:var(--sr-muted);padding-top:6px}
.sr-found-lock .sl-icon {width:15px;height:15px}
.sr-found-row.is-locked .sr-found-ic {background:var(--sr-lilac)}
.sr-found-cta {display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid var(--sr-line);margin-top:8px;padding:12px 4px 2px;font-size:11px;color:var(--sr-muted)}
.sr-found-btn {display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:9px 15px;border-radius:11px;border:1px solid var(--sr-green);background:var(--sr-green);color:#fff;font:inherit;font-size:12px;font-weight:700}
.sr-found-btn .sl-icon {width:16px;height:16px}
.sr-found-btn:hover {background:var(--teal-hover)}
.sr-found-empty {display:flex;align-items:center;gap:10px;font-size:11px;color:var(--sr-muted);padding:4px}
.sr-found-empty .sl-icon {width:18px;height:18px}
@media (max-width:600px){.sr-found{padding:10px}.sr-found-cta{flex-direction:column;align-items:stretch}.sr-found-btn{justify-content:center}}
.sr-search input::-webkit-search-cancel-button,.sr-search input::-webkit-search-decoration {-webkit-appearance:none;appearance:none;display:none}