:root{--blue:#0b6d9f;--deep:#063c59;--navy:#031d2d;--ink:#102b38;--muted:#607985;--line:#c9dfe8;--soft:#edf7fa;--green:#176b50}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#eaf5fa;color:var(--ink);font-family:"DM Sans",system-ui,sans-serif}.public-classroom-hero{display:grid;place-items:center;min-height:500px;padding:54px 22px;text-align:center;color:#fff;background:radial-gradient(circle at 20% 15%,rgba(20,139,187,.34) 0,transparent 34%),linear-gradient(135deg,#021725,#063f61 62%,#07577a)}.public-classroom-hero>p:first-of-type,.public-classroom-section header span,.program-type{color:#61c8f3;font-size:12px;font-weight:900;letter-spacing:.14em}.public-classroom-section header span,.program-type{color:var(--blue)}.public-classroom-hero h1{max-width:850px;margin:10px 0;font-size:clamp(36px,7vw,68px);line-height:1.02;letter-spacing:-.045em;text-wrap:balance}.public-classroom-lead{max-width:700px;margin:8px auto 24px;color:#d3e8f1;font-size:18px;line-height:1.55}.public-classroom-actions,.program-preview-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}.public-classroom-actions a,.program-preview-actions a{border-radius:999px;padding:13px 18px;background:#0e83b8;color:#fff;text-decoration:none;font-weight:900}.public-classroom-actions a.secondary{border:1px solid #c6e7f4;background:#fff;color:var(--deep)}.program-preview-actions a.secondary{border:1px solid #93c6d8;background:#fff;color:var(--deep)}.public-classroom-shell{width:min(1180px,calc(100% - 28px));margin:28px auto 100px}.public-classroom-section{margin-bottom:28px;border:1px solid var(--line);border-radius:28px;padding:clamp(20px,4vw,36px);background:#fff;box-shadow:0 18px 45px #0b4c6810}.public-classroom-section>header{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:22px}.public-classroom-section h2{margin:5px 0 0;font-size:clamp(28px,4vw,42px)}.public-classroom-section>header>p{max-width:470px;margin:0;color:var(--muted);line-height:1.5}.public-talks{display:grid;gap:16px}.public-talks-empty{display:flex;align-items:center;gap:16px;min-height:150px;border:1px dashed #8dbdcd;border-radius:20px;padding:24px;background:var(--soft)}.public-talks-empty>span{display:grid;place-items:center;flex:0 0 52px;width:52px;height:52px;border-radius:18px;background:#fff;color:var(--blue);font-size:22px}.public-talks-empty strong{font-size:19px}.public-talks-empty p{margin:5px 0 0;color:var(--muted)}.public-talk-card{display:grid;grid-template-columns:minmax(260px,42%) 1fr;gap:18px;border:1px solid var(--line);border-radius:20px;padding:14px}.public-talk-player{position:relative;overflow:hidden;padding-top:56.25%;border-radius:15px;background:#061c27}.public-talk-player iframe,.public-talk-player img{position:absolute;inset:0;width:100%;height:100%;border:0;object-fit:cover}.public-talk-card h3{margin:6px 0}.public-talk-card p{color:var(--muted)}.program-preview-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.program-preview-card{overflow:hidden;border:1px solid var(--line);border-radius:24px;background:#fbfdfe}.program-preview-card>img{display:block;width:100%;height:230px;object-fit:cover}.program-preview-content{padding:22px}.program-preview-content h3{margin:6px 0 8px;font-size:27px}.program-preview-content>p,.program-preview-content details p{color:var(--muted);line-height:1.5}.program-preview-content ul{padding-left:20px;line-height:1.7}.program-preview-content details{margin:18px 0;border:1px solid #d6e6ec;border-radius:15px;padding:13px;background:#fff}.program-preview-content summary{color:var(--deep);font-weight:900;cursor:pointer}.program-preview-actions{justify-content:flex-start}.public-classroom-security{display:flex;align-items:center;gap:14px;border:1px solid #bcdccf;border-radius:22px;padding:20px;background:#eff9f5}.public-classroom-security>span{font-size:28px}.public-classroom-security p{margin:4px 0 0;color:#526e64;line-height:1.45}@media(max-width:760px){.public-classroom-hero{min-height:440px;padding-top:34px}.public-classroom-section>header{display:block}.public-classroom-section>header>p{margin-top:8px}.program-preview-grid{grid-template-columns:1fr}.public-talk-card{grid-template-columns:1fr}.program-preview-card>img{height:190px}}@media(max-width:420px){.public-classroom-shell{width:min(100% - 18px,1180px)}.public-classroom-section{padding:16px;border-radius:21px}.public-classroom-actions,.program-preview-actions{display:grid;width:100%}.public-classroom-actions a,.program-preview-actions a{text-align:center}}

.public-classroom-brand{display:flex;align-items:center;justify-content:center;gap:18px;width:min(470px,calc(100vw - 36px));margin-bottom:28px;border:1px solid rgba(255,255,255,.72);border-radius:32px;padding:18px 28px;background:#fff;color:var(--ink);text-decoration:none;box-shadow:0 18px 42px rgba(0,12,22,.28)}
.public-classroom-brand .public-classroom-brand-mark{flex:0 0 auto;width:112px;height:112px;max-height:none;margin:0;object-fit:contain}
.public-classroom-brand .public-classroom-brand-wordmark{flex:1 1 auto;width:min(260px,55vw);height:auto;max-height:100px;margin:0;object-fit:contain}
.public-talk-card>div:last-child{align-self:center;padding:10px 10px 10px 2px}
.public-talk-card>div:last-child>span{color:var(--blue);font-size:12px;font-weight:900;letter-spacing:.12em}
.public-talk-card h3{font-size:clamp(21px,2.3vw,29px);line-height:1.16}
.public-talk-card p{font-size:17px;line-height:1.55}
@media(max-width:520px){.public-classroom-brand{gap:10px;margin-bottom:22px;padding:12px 16px;border-radius:23px}.public-classroom-brand .public-classroom-brand-mark{width:78px;height:78px}.public-classroom-brand .public-classroom-brand-wordmark{width:min(220px,58vw);max-height:78px}.public-classroom-hero>p:first-of-type{font-size:11px}}