.course-demo[data-astro-cid-4q7su6oc]{--course-ink: #18323b;--course-muted: #607078;--course-paper: #f8faf8;--course-warm: #e8a65a;--course-lime: #b7d77c;--course-line: #d7e2de;background:var(--course-paper);color:var(--course-ink)}.course-shell[data-astro-cid-4q7su6oc]{width:min(1120px,calc(100% - 48px));margin:0 auto}.demo-banner[data-astro-cid-4q7su6oc]{background:#18323b;color:#fff;font-size:.82rem;letter-spacing:.04em;padding:10px 0}.demo-banner[data-astro-cid-4q7su6oc] .course-shell[data-astro-cid-4q7su6oc]{display:flex;align-items:center;gap:8px}.demo-banner[data-astro-cid-4q7su6oc] .material-icon{color:var(--course-lime)}.course-hero[data-astro-cid-4q7su6oc]{padding:100px 0 88px;background:linear-gradient(125deg,#f7f8f4,#ecf5ef 68%,#dceee9);border-bottom:1px solid var(--course-line)}.course-hero-grid[data-astro-cid-4q7su6oc]{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:62px}.demo-kicker[data-astro-cid-4q7su6oc],.section-kicker[data-astro-cid-4q7su6oc]{color:#518b76;font-size:.76rem;font-weight:800;letter-spacing:.16em;margin:0 0 15px}.course-hero[data-astro-cid-4q7su6oc] h1[data-astro-cid-4q7su6oc],.course-demo[data-astro-cid-4q7su6oc] h2[data-astro-cid-4q7su6oc],.course-demo[data-astro-cid-4q7su6oc] h3[data-astro-cid-4q7su6oc],.course-demo[data-astro-cid-4q7su6oc] p[data-astro-cid-4q7su6oc]{margin-top:0}.course-hero[data-astro-cid-4q7su6oc] h1[data-astro-cid-4q7su6oc]{font-size:clamp(2.55rem,5vw,4.6rem);line-height:1.17;letter-spacing:.01em;margin-bottom:26px}.course-hero[data-astro-cid-4q7su6oc] h1[data-astro-cid-4q7su6oc] 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h2[data-astro-cid-4q7su6oc]{font-size:clamp(1.9rem,3.6vw,3.15rem);line-height:1.3;margin-bottom:0}.section-heading-row[data-astro-cid-4q7su6oc]>p[data-astro-cid-4q7su6oc]{color:var(--course-muted);line-height:1.8;margin-bottom:5px}.course-grid[data-astro-cid-4q7su6oc]{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.course-card[data-astro-cid-4q7su6oc]{display:flex;flex-direction:column;padding:22px;min-height:365px;background:#fff;border:1px solid var(--course-line);border-radius:9px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}.course-card[data-astro-cid-4q7su6oc]:hover,.course-card[data-astro-cid-4q7su6oc].is-selected{border-color:#619b80;transform:translateY(-3px);box-shadow:0 16px 28px 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