:root{--ink:#101418;--ink-soft:#3a434d;--ink-muted:#6b7580;--ink-faint:#97a1ab;--canvas:#eef2f0;--canvas-deep:#dce5e1;--surface:#ffffffc7;--surface-solid:#fff;--line:#10141814;--line-strong:#10141824;--accent:#0b6e6a;--accent-soft:#0b6e6a1a;--accent-hover:#095a57;--danger:#b42318;--success:#067647;--shadow:0 18px 50px #10141814;--radius-sm:10px;--radius-md:16px;--radius-lg:24px;--font:"Instrument Sans", "PingFang SC", "Microsoft YaHei", sans-serif;--mono:"IBM Plex Mono", ui-monospace, monospace;color:var(--ink);background:var(--canvas);font-family:var(--font);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased}*,:before,:after{box-sizing:border-box}html,body{min-height:100%;margin:0}body{background:radial-gradient(1200px 600px at 12% -10%, #0b6e6a24, transparent 55%), radial-gradient(900px 500px at 90% 0%, #1014180f, transparent 50%), linear-gradient(180deg, #f5f8f6 0%, var(--canvas) 45%, var(--canvas-deep) 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