:root{color:#26322e;font-synthesis:none;text-rendering:optimizelegibility;--ink:#26322e;--muted:#71807a;--line:#dce5e0;--paper:#fff;--mint:#5aac8c;--mint-soft:#e7f5ef;--coral:#e97d68;--coral-soft:#fff0ec;--gold:#d5a33e;--gold-soft:#fff6dc;--blue:#688fad;--blue-soft:#ecf4fa;--red:#d65c62;--red-soft:#ffedef;background:#f5f8f6;font-family:Noto Sans SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;min-width:320px}body{background:#f5f8f6;min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}audio{max-width:100%}button{color:inherit}button:focus-visible,a:focus-visible{outline-offset:3px;outline:3px solid #5aac8c59}.app-shell{flex-direction:column;min-height:100vh;display:flex}.topbar{border-bottom:1px solid var(--line);z-index:20;background:#fffffff0;align-items:center;height:74px;padding:0 clamp(20px,4vw,64px);display:flex;position:sticky;top:0}.brand{color:inherit;align-items:center;gap:11px;text-decoration:none;display:flex}.brand 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