:root{--bg: #f6f8f7;--surface: #ffffff;--ink: #16211d;--ink-2: #3d4a45;--muted: #68766f;--faint: #97a49d;--line: #e3e8e5;--line-strong: #ccd5d1;--accent: #0f7b6c;--accent-ink: #0a5c51;--accent-soft: #e2f0ec;--amber: #b7791f;--amber-soft: #f8ecd9;--red: #b3362c;--red-soft: #f7e4e2;--radius: 12px;--radius-s: 8px;--mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Menlo, monospace;--sans: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 var(--sans)}#app{min-height:100dvh;display:flex;flex-direction:column}h1,h2,h3{margin:0;font-weight:600}a{color:var(--accent);text-decoration:none}button{font:inherit;cursor:pointer}input,select{font:inherit;color:inherit}::selection{background:var(--accent-soft)}:focus-visible{outline:2px solid 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