:root{--bg: #0f1115;--bg-elevated: #171a21;--bg-hover: #1e222b;--border: #272b36;--text: #e6e8ee;--text-dim: #9aa2b1;--text-faint: #6b7385;--accent: #6366f1;--accent-hover: #7c7ff3;--danger: #ef4444;--success: #10b981;--radius: 12px;--radius-sm: 8px;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 system-ui,-apple-system,PingFang SC,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img,video{max-width:100%;display:block}button,input,select,textarea{font:inherit;color:inherit}.app{min-height:100%;display:flex;flex-direction:column}.nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:4px;padding:10px 20px;background:#0f1115d9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid 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