:root{--bg: #f7f8fa;--bg-elevated: #ffffff;--text-primary: #1a1f36;--text-secondary: #555f78;--text-tertiary: #8792a6;--border: rgba(0, 0, 0, .08);--border-strong: rgba(0, 0, 0, .14);--brand-1: #635bff;--brand-2: #7c4dff;--brand-3: #ff5c8a;--accent: #ff2442;--glass-bg: rgba(255, 255, 255, .62);--glass-border: rgba(255, 255, 255, .4);--glass-blur: 20px;--shadow-sm: 0 1px 2px rgba(17, 24, 39, .04), 0 1px 3px rgba(17, 24, 39, .06);--shadow-md: 0 4px 16px rgba(17, 24, 39, .06), 0 8px 32px rgba(17, 24, 39, .08);--shadow-lg: 0 12px 40px rgba(17, 24, 39, .12);--max-width: 1080px;--radius: 16px;--radius-sm: 10px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;--font-mono: "SF Mono", "JetBrains Mono", "Fira Code", Consolas, "Courier New", monospace}:root.dark{--bg: #0a0c14;--bg-elevated: #121522;--text-primary: #f2f4fb;--text-secondary: #b8c0d4;--text-tertiary: #6d7790;--border: rgba(255, 255, 255, .08);--border-strong: rgba(255, 255, 255, .16);--glass-bg: rgba(20, 24, 40, .6);--glass-border: rgba(255, 255, 255, .08);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 16px rgba(0, 0, 0, .5);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .6)}@media(prefers-color-scheme:dark){:root:not(.light){--bg: #0a0c14;--bg-elevated: #121522;--text-primary: #f2f4fb;--text-secondary: #b8c0d4;--text-tertiary: #6d7790;--border: rgba(255, 255, 255, .08);--border-strong: rgba(255, 255, 255, .16);--glass-bg: rgba(20, 24, 40, .6);--glass-border: rgba(255, 255, 255, .08);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 16px rgba(0, 0, 0, .5);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .6)}}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background-color:var(--bg);color:var(--text-primary);line-height:1.7;font-size:16px;background-image:radial-gradient(ellipse 80% 50% at 10% 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