:root{--bg: #ffffff;--bg-soft: #f6f7f9;--bg-card: #ffffff;--text: #1f2329;--text-soft: #5c6370;--text-faint: #8a909a;--border: #e8eaed;--accent: #2f6fed;--accent-soft: #e8f0fe;--pin: #e8590c;--stock-bg: #f1f5f9;--stock-text: #0f172a;--radius: 12px;--max-width: 1120px;--shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04)}html.dark{--bg: #0f1115;--bg-soft: #161a20;--bg-card: #171b22;--text: #e6e9ef;--text-soft: #aab2c0;--text-faint: #6b7480;--border: #262c36;--accent: #5b8bff;--accent-soft: #1c2740;--stock-bg: #1c2230;--stock-text: #cdd6e4;--shadow: 0 1px 3px rgba(0, 0, 0, .4)}*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.75;transition:background .2s ease,color .2s 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