:root{--bg: #eef2f9;--bg2: #e7edf7;--card: #ffffff;--line: #e5e9f2;--fg: #0f172a;--dim: #64748b;--blue: #2563eb;--blue-soft: #eff6ff;--red: #ef4444;--red-soft: #fef2f2;--green: #059669;--gray-soft: #f1f5f9;--header-h: 56px}*{box-sizing:border-box;margin:0;padding:0}html{color-scheme:light}body{background:linear-gradient(180deg,#f6f9ff 0%,var(--bg) 40%,var(--bg2) 100%);color:var(--fg);font:14px/1.6 -apple-system,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;min-height:100vh;display:flex;flex-direction:column}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;box-shadow:0 1px 3px #0f172a0a}.nav-inner{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:12px;padding:0 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