:root{--bg: #070b14;--bg-elevated: #0c1220;--bg-card: #0f1629;--bg-card-hover: #141f38;--border: rgba(99, 140, 255, .16);--border-strong: rgba(99, 140, 255, .28);--text: #e8edf7;--text-muted: #8b9bb8;--accent: #5b8cff;--accent-2: #22d3a6;--radius: 12px;--radius-lg: 16px;--space-xs: 8px;--space-sm: 16px;--space-md: 24px;--space-lg: 32px;--space-xl: 56px;--space-2xl: 80px;--max: 1080px;--font: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--mono: "Cascadia Code", "SF Mono", Consolas, monospace}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:80px}body{font-family:var(--font);background:#070b14;color:var(--text);line-height:1.7;min-height:100vh;font-size:15px;overflow-x:hidden}.site-bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;pointer-events:none;background:radial-gradient(ellipse 125% 90% at 50% -20%,rgba(91,140,255,.25) 0%,rgba(91,140,255,.08) 38%,transparent 65%),radial-gradient(ellipse 80% 60% at 100% 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64px}.stats{grid-template-columns:repeat(3,1fr)}.arch-grid{grid-template-columns:repeat(2,1fr)}.grid--3{grid-template-columns:1fr}.grid--4{grid-template-columns:repeat(2,1fr)}.card__split{grid-template-columns:1fr}.nav-dropdown__menu{min-width:150px}}@media(max-width:768px){.nav-dropdown__trigger.is-active,.nav-dropdown__menu a.is-active,.nav>a.is-active{color:var(--accent-2);background:#22d3a614}.site-header__inner{flex-wrap:wrap;gap:var(--space-sm)}.logo{flex:1;min-width:0}.site-header__tools{order:2;margin-left:auto}.site-header__nav-panel{display:none;flex:none;width:100%;order:3;padding-top:var(--space-xs);border-top:1px solid var(--border)}.site-header.is-nav-open .site-header__nav-panel{display:block}.nav-toggle{display:inline-flex}.nav{flex-direction:column;align-items:stretch;width:100%;gap:4px}.nav>a,.nav-dropdown__trigger,.nav-cta{width:100%;justify-content:flex-start;min-height:44px;padding:0 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