:root{--ink:#17211d;--muted:#5e6b65;--paper:#f6f3eb;--surface:#fffdf8;--surface-strong:#fff;--line:#d9ddd7;--forest:#174f3c;--forest-dark:#0d3528;--mint:#d9efe5;--orange:#e77732;--success:#176b44;--success-bg:#eaf5ed;--warning:#94620a;--warning-bg:#fff5df;--error:#8b2929;--error-bg:#fff0ed;color:var(--ink);background:var(--paper);font-synthesis:none;text-rendering:optimizelegibility;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Noto Sans TC,PingFang TC,Segoe UI,sans-serif}*{box-sizing:border-box}[hidden]{display:none!important}.visually-hidden{clip:rect(0, 0, 0, 0)!important;white-space:nowrap!important;border:0!important;width:1px!important;height:1px!important;margin:-1px!important;padding:0!important;position:absolute!important;overflow:hidden!important}body{min-width:320px;min-height:100vh;color:var(--ink);background:radial-gradient(circle at 8% -8%, #d9efe5d1, transparent 29rem), radial-gradient(circle at 96% 5%, #dfeaf399, transparent 26rem), var(--paper);margin:0}button,input,select,textarea{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.5}#app{min-height:100vh}.skip-link{z-index:100;color:#fff;background:var(--forest-dark);border-radius:999px;padding:10px 14px;position:fixed;top:10px;left:10px;transform:translateY(-150%)}.skip-link:focus{transform:translateY(0)}.site-header{z-index:30;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#f6f3ebeb;border-bottom:1px solid #17211d1a;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:20px;width:min(1180px,100% - 32px);min-height:72px;margin:0 auto;display:flex}.brand-lockup{color:var(--ink);align-items:center;gap:11px;text-decoration:none;display:inline-flex}.brand-mark{color:#fff;background:var(--forest);border-radius:13px 13px 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#0d35281f;border-radius:24px;justify-content:space-between;align-items:center;gap:24px;margin-bottom:20px;padding:clamp(23px,4vw,36px);display:flex;box-shadow:0 18px 46px #0d352829}.eyebrow{color:#f9dfca;text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:800}h1{letter-spacing:-.045em;color:#fff;margin:7px 0 0;font-size:clamp(32px,5vw,56px);line-height:1}.lede{color:#ffffffc2;max-width:760px;margin-bottom:0;line-height:1.65}.status-pill{color:#fff;background:#ffffff1a;border:1px solid #ffffff38;border-radius:999px;flex:none;align-items:center;gap:8px;padding:8px 11px;font-size:12px;display:flex}.status-pill span{background:#2fb36f;border-radius:50%;width:8px;height:8px}.student-share-panel{background:#edf7f0;border:1px solid #b8d7c5;border-radius:18px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px 28px;margin:0 0 20px;padding:18px 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