:root{--bg: #f6f7f9;--surface: #ffffff;--border: #e5e7eb;--text: #1f2328;--text-muted: #6b7280;--primary: #2563eb;--primary-hover: #1d4ed8;--danger: #dc2626;--danger-hover: #b91c1c;--success: #15803d;--radius: 12px;--shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 4px 16px rgba(16, 24, 40, .06)}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}.page{max-width:1180px;margin:0 auto;padding:40px 24px 80px}.page-header h1{margin:0 0 8px;font-size:26px;letter-spacing:-.02em}.layout{display:grid;grid-template-columns:minmax(0,420px) minmax(0,1fr);gap:24px;align-items:start;margin-top:28px}@media (max-width: 900px){.layout{grid-template-columns:minmax(0,1fr)}}.card{background:var(--surface);border:1px solid 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