:root{--color-primary: #1E293B;--color-on-primary: #FFFFFF;--color-secondary: #334155;--color-accent: #22C55E;--color-accent-hover: #16A34A;--color-background: #0F172A;--color-foreground: #F8FAFC;--color-muted: #272F42;--color-muted-fg: #94A3B8;--color-border: #334155;--color-border-subtle: #1E293B;--color-destructive: #EF4444;--color-ring: #22C55E;--color-orange: #F97316;--color-blue: #3B82F6;--color-purple: #A855F7;--shadow-card: 0 2px 0 0 rgba(0,0,0,.2), 0 8px 24px -8px rgba(0,0,0,.3);--shadow-card-hover: 0 4px 0 0 rgba(0,0,0,.15), 0 16px 40px -8px rgba(0,0,0,.4);--shadow-glow-green: 0 0 20px rgba(34,197,94,.15);--shadow-glow-orange: 0 0 20px rgba(249,115,22,.15);--radius-outer: 24px;--radius-card: 16px;--radius-btn: 12px;--radius-sm: 8px;--radius-pill: 999px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--font-body: "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-body);background:var(--color-background);color:var(--color-foreground);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}a{color:var(--color-accent);text-decoration:none;transition:color .2s ease;cursor:pointer}a:hover{color:var(--color-accent-hover)}:focus-visible{outline:2px solid var(--color-ring);outline-offset:2px}:focus:not(:focus-visible){outline:none}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}.container{max-width:1200px;margin:0 auto;padding:0 var(--space-6)}section{padding:var(--space-16) 0}.section-label{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--color-accent);margin-bottom:var(--space-2)}.section-title{font-size:clamp(1.8rem,4vw,2.5rem);font-weight:700;line-height:1.2;margin-bottom:var(--space-3);color:var(--color-foreground)}.section-subtitle{font-size:1.1rem;color:var(--color-muted-fg);max-width:600px;line-height:1.6}.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:var(--space-10) var(--space-6);position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:-30%;left:50%;transform:translate(-50%);width:800px;height:800px;background:radial-gradient(circle,rgba(34,197,94,.06) 0%,transparent 60%);pointer-events:none}.hero-content{position:relative;z-index:1;max-width:720px}.hero-title{font-size:clamp(2.5rem,7vw,4.5rem);font-weight:800;line-height:1.1;margin-bottom:var(--space-4);background:linear-gradient(135deg,var(--color-foreground) 0%,var(--color-accent) 50%,var(--color-orange) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-tagline{font-size:clamp(1.1rem,2.5vw,1.4rem);color:var(--color-muted-fg);margin-bottom:var(--space-8);line-height:1.5}.badge-row{display:flex;gap:var(--space-3);justify-content:center;flex-wrap:wrap;margin-bottom:var(--space-8)}.badge{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);border-radius:var(--radius-pill);font-size:.85rem;font-weight:500;border:1px solid var(--color-border);background:var(--color-muted);color:var(--color-muted-fg);transition:border-color .2s,color .2s;white-space:nowrap}.badge.rust{border-color:#f973164d;color:var(--color-orange)}.badge.python{border-color:#22c55e4d;color:var(--color-accent)}.badge.vue{border-color:#a855f74d;color:var(--color-purple)}.cta-row{display:flex;gap:var(--space-4);justify-content:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);border-radius:var(--radius-btn);font-size:1rem;font-weight:600;transition:all .2s ease;cursor:pointer;border:none;text-decoration:none;min-height:44px}.btn svg{width:18px;height:18px;flex-shrink:0}.btn-primary{background:var(--color-accent);color:#fff;box-shadow:var(--shadow-card)}.btn-primary:hover{background:var(--color-accent-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-card-hover),var(--shadow-glow-green)}.btn-secondary{background:var(--color-muted);color:var(--color-foreground);border:1px solid var(--color-border)}.btn-secondary:hover{background:var(--color-secondary);border-color:var(--color-muted-fg);color:var(--color-foreground)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:var(--space-5);margin-top:var(--space-10)}.feature-card{background:var(--color-muted);border:1px solid var(--color-border);border-radius:var(--radius-card);padding:var(--space-6);box-shadow:var(--shadow-card);transition:all .25s ease;cursor:default}.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--color-border)}.feature-icon{width:48px;height:48px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;margin-bottom:var(--space-4);box-shadow:var(--shadow-card)}.feature-icon svg{width:24px;height:24px}.feature-icon.green{background:linear-gradient(135deg,#22c55e33,#22c55e1a);color:var(--color-accent)}.feature-icon.orange{background:linear-gradient(135deg,#f9731633,#f973161a);color:var(--color-orange)}.feature-icon.blue{background:linear-gradient(135deg,#3b82f633,#3b82f61a);color:var(--color-blue)}.feature-icon.purple{background:linear-gradient(135deg,#a855f733,#a855f71a);color:var(--color-purple)}.feature-card h3{font-size:1.1rem;font-weight:600;margin-bottom:var(--space-2)}.feature-card p{font-size:.9rem;color:var(--color-muted-fg);line-height:1.6}.arch-diagram{background:var(--color-muted);border:1px solid var(--color-border);border-radius:var(--radius-card);padding:var(--space-8);font-family:var(--font-mono);font-size:.8rem;line-height:1.6;overflow-x:auto;white-space:pre;color:var(--color-muted-fg);margin-top:var(--space-10);box-shadow:var(--shadow-card)}.code-block{background:var(--color-muted);border:1px solid var(--color-border);border-radius:var(--radius-card);padding:var(--space-5);font-family:var(--font-mono);font-size:.9rem;overflow-x:auto;box-shadow:var(--shadow-card);margin-top:var(--space-5)}.code-block .comment{color:var(--color-muted-fg)}.code-block .cmd{color:var(--color-accent)}.code-block .flag{color:var(--color-blue)}.palette-row{display:flex;gap:var(--space-2);margin-top:var(--space-4);flex-wrap:wrap}.palette-dot{width:28px;height:28px;border-radius:50%;border:2px solid var(--color-border);transition:transform .2s}.palette-dot:hover{transform:scale(1.15)}footer{text-align:center;padding:var(--space-10) var(--space-6);color:var(--color-muted-fg);font-size:.85rem;border-top:1px solid var(--color-border-subtle)}footer a{color:var(--color-muted-fg)}footer a:hover{color:var(--color-accent)}[data-theme=light]{--color-primary: #F1F5F9;--color-on-primary: #0F172A;--color-secondary: #E2E8F0;--color-accent: #16A34A;--color-accent-hover: #15803D;--color-background: #FAFBFC;--color-foreground: #0F172A;--color-muted: #F1F5F9;--color-muted-fg: #64748B;--color-border: #E2E8F0;--color-border-subtle: #F1F5F9;--color-ring: #16A34A;--shadow-card: 0 1px 3px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);--shadow-card-hover: 0 4px 12px rgba(0,0,0,.08), 0 12px 28px rgba(0,0,0,.06);--shadow-glow-green: 0 0 20px rgba(22,163,74,.1);--shadow-glow-orange: 0 0 20px rgba(249,115,22,.1)}[data-theme=light] .hero:before{background:radial-gradient(circle,rgba(22,163,74,.08) 0%,transparent 60%)}[data-theme=light] .hero-title{background:none;-webkit-text-fill-color:var(--color-foreground)}[data-theme=light] .feature-icon.green{background:linear-gradient(135deg,#16a34a26,#16a34a0d)}[data-theme=light] .feature-icon.orange{background:linear-gradient(135deg,#f9731626,#f973160d)}[data-theme=light] .feature-icon.blue{background:linear-gradient(135deg,#3b82f626,#3b82f60d)}[data-theme=light] .feature-icon.purple{background:linear-gradient(135deg,#a855f726,#a855f70d)}.theme-toggle{position:fixed;top:var(--space-5);right:var(--space-6);z-index:101;width:40px;height:40px;border-radius:50%;border:1px solid var(--color-border);background:var(--color-muted);color:var(--color-foreground);font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-card);transition:all .2s;line-height:1}.theme-toggle:hover{background:var(--color-secondary);transform:scale(1.05)}.lang-switch{position:fixed;top:var(--space-5);right:calc(var(--space-6) + 52px);z-index:100;display:flex;gap:var(--space-2);align-items:center;background:var(--color-muted);border:1px solid var(--color-border);border-radius:var(--radius-btn);padding:var(--space-2) var(--space-4);font-size:.85rem;box-shadow:var(--shadow-card)}.lang-switch a{color:var(--color-muted-fg);font-weight:500;transition:color .2s;padding:2px 4px}.lang-switch a:hover,.lang-switch a.active{color:var(--color-accent)}.lang-switch span{color:var(--color-border)}@media(max-width:768px){section{padding:var(--space-10) 0}.features-grid{grid-template-columns:1fr}.hero{min-height:90vh}.badge-row{gap:var(--space-2)}.badge{font-size:.75rem;padding:var(--space-1) var(--space-3)}.cta-row{flex-direction:column;align-items:center}.btn{width:100%;max-width:280px;justify-content:center}.lang-switch{top:var(--space-3);right:calc(var(--space-4) + 52px)}.theme-toggle{top:var(--space-3);right:var(--space-4);width:36px;height:36px;font-size:1rem}}@media(min-width:1440px){.container{max-width:1320px}}