:root{--bg: #f2f5fb;--bg-card: #ffffff;--bg-card-hover: #fafafa;--bg-elevated: rgba(255, 255, 255, .72);--bg-frost: rgba(255, 255, 255, .65);--bg-header: rgba(249, 251, 255, .9);--line: rgba(0, 0, 0, .06);--line-strong: rgba(0, 0, 0, .1);--line-focus: rgba(0, 122, 255, .35);--text: #1d1d1f;--text-secondary: #6e6e73;--text-tertiary: #86868b;--text-white: #ffffff;--accent: #5b5ce2;--accent-light: rgba(91, 92, 226, .08);--accent-mid: rgba(91, 92, 226, .14);--accent-2: #0f9f9a;--accent-green: #34c759;--accent-orange: #ff9500;--danger: #ff3b30;--danger-light: rgba(255, 59, 48, .08);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .06);--shadow-lg: 0 12px 34px rgba(26, 32, 72, .09);--shadow-xl: 0 24px 70px rgba(26, 32, 72, .14);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--radius-full: 9999px;--font: "Segoe UI Variable Text", "Segoe UI", "Microsoft YaHei UI", sans-serif;--font-display: "Segoe UI Variable Display", "Segoe UI", 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