:root{--font-display: "Noto Serif", Georgia, "Noto Serif TC", "Songti TC", "Source Han Serif TC", serif;--font-body: "Inter", "Noto Sans TC", -apple-system, BlinkMacSystemFont, "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--bg: #faf6f0;--bg-sunken: #f3ece2;--surface: #fffdfa;--surface-2: #fbf7f1;--ink: #1e1513;--ink-2: #5c4f49;--ink-3: #8a7d76;--line: #e9dfd2;--line-strong: #d8c9b8;--red: #b01e23;--red-press: #94161b;--red-deep: #6f0e12;--red-ink: #a51c21;--red-tint: #f8e8e4;--gold: #c99a3b;--gold-bright: #ecc878;--gold-ink: #8a6417;--gold-tint: #f6ecd4;--cream: #fff8e8;--ok: #2e7a4f;--ok-tint: #e3f1e8;--warn: #9c5a0c;--warn-tint: #fbefd9;--danger: #b3261e;--danger-tint: #fbe6e3;--env-1: #c4262c;--env-2: #9e161c;--env-3: #7d0f14;--env-flap-1: #d12f35;--env-flap-2: #a8191f;--shadow-1: 0 1px 2px rgba(70, 25, 15, .06);--shadow-2: 0 1px 2px rgba(70, 25, 15, .05), 0 10px 30px rgba(70, 25, 15, .08);--shadow-env: 0 2px 4px rgba(70, 10, 10, .12), 0 24px 48px -12px rgba(110, 15, 20, .45);--radius: 18px;--radius-sm: 12px;--tap: 48px;--gutter: 16px;--header-h: 60px;--bottom-nav-h: 64px;color-scheme:light}@media (prefers-color-scheme: dark){:root{--bg: #120e0d;--bg-sunken: #0c0908;--surface: #1b1514;--surface-2: #211a18;--ink: #f4ece4;--ink-2: #c4b6ac;--ink-3: #8f8179;--line: #2e2523;--line-strong: #44362f;--red: #c8292f;--red-press: #ad2026;--red-deep: #5c0d11;--red-ink: #f2938c;--red-tint: #2b1514;--gold: #d8ae5a;--gold-bright: #efcb7c;--gold-ink: #e6c172;--gold-tint: #2a2216;--cream: #fff4dc;--ok: #74c494;--ok-tint: #14261b;--warn: #f0b45c;--warn-tint: #2b2112;--danger: #f2938c;--danger-tint: #2d1514;--env-1: #b3232a;--env-2: #8c141a;--env-3: #650c11;--env-flap-1: #c02a30;--env-flap-2: #951a1f;--shadow-1: 0 1px 2px rgba(0, 0, 0, .4);--shadow-2: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 30px rgba(0, 0, 0, .35);--shadow-env: 0 2px 4px rgba(0, 0, 0, .4), 0 24px 48px -12px rgba(0, 0, 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12px;border-radius:999px;text-decoration:none;color:var(--ink-2);font-weight:500;font-size:15px}.header-nav a:hover{color:var(--ink);background:var(--bg-sunken)}.header-nav a.active{color:var(--red-ink);background:var(--red-tint)}.header-spacer{flex:1}.lang-btn{min-width:var(--tap);height:44px;padding:0 12px;border-radius:999px;border:1px solid var(--line-strong);background:var(--surface);font-size:14px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:6px}.lang-btn:hover{border-color:var(--gold)}.main{flex:1;width:100%;max-width:560px;margin:0 auto;padding:20px var(--gutter) calc(var(--bottom-nav-h) + 40px + env(safe-area-inset-bottom))}.main.wide{max-width:1080px}.bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:30;height:calc(var(--bottom-nav-h) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:saturate(1.4) 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