:root{--bg: #0a0b0f;--bg-card: #12141a;--bg-elev: #181b23;--border: #222638;--border-hover: #363d56;--fg: #eaedf5;--fg-muted: #8b93a8;--fg-dim: #5c6478;--accent: #6c5ce7;--accent-hover: #7f6fff;--accent-soft: rgba(108, 92, 231, .12);--success: #00d68f;--danger: #ff4757;--gradient: linear-gradient(135deg, #6c5ce7 0%, #a855f7 50%, #ec4899 100%);--shadow: 0 8px 32px rgba(0, 0, 0, .4);--radius: 12px;--radius-sm: 8px;color-scheme:dark}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--fg);font-family:Inter,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%}.layout{min-height:100vh;display:flex;flex-direction:column}.main{flex:1}.navbar{position:sticky;top:0;z-index:100;background:#0a0b0fd9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.navbar-inner{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}.logo{font-size:22px;font-weight:800;letter-spacing:-.03em;background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.nav-links{display:flex;gap:28px;align-items:center}.nav-links a{font-size:14px;font-weight:500;color:var(--fg-muted);transition:color .15s}.nav-links a:hover,.nav-links a.active{color:var(--fg)}.cart-link{position:relative}.badge{position:absolute;top:-8px;right:-12px;background:var(--accent);color:#fff;font-size:11px;font-weight:700;width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center}.badge.hidden{display:none}.btn{display:inline-flex;align-items:center;justify-content:center;border:none;font-family:inherit;font-weight:600;cursor:pointer;border-radius:var(--radius-sm);transition:all .15s ease;font-size:14px;padding:10px 20px}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}.btn-outline{background:transparent;border:1.5px solid var(--border-hover);color:var(--fg)}.btn-outline:hover{border-color:var(--accent);color:var(--accent)}.btn-sm{font-size:13px;padding:8px 14px}.btn-lg{padding:14px 28px;font-size:15px}.btn-block{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.hero{padding:100px 24px 80px;text-align:center;background:radial-gradient(800px circle at 50% 0%,rgba(108,92,231,.1) 0%,transparent 50%)}.hero-content{max-width:680px;margin:0 auto}.hero-title{font-size:clamp(36px,5vw,56px);font-weight:800;letter-spacing:-.03em;line-height:1.15;margin-bottom:20px}.gradient-text{background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{font-size:18px;color:var(--fg-muted);max-width:520px;margin:0 auto 32px}.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.features{max-width:1000px;margin:0 auto;padding:60px 24px;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}.feature{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px 24px;text-align:center}.feature-icon{font-size:32px;margin-bottom:16px}.feature h3{font-size:16px;font-weight:700;margin-bottom:8px}.feature p{font-size:14px;color:var(--fg-muted)}.cta-section{text-align:center;padding:80px 24px}.cta-section h2{font-size:28px;font-weight:700;margin-bottom:12px}.cta-section p{color:var(--fg-muted);margin-bottom:24px}.products-page,.cart-page,.checkout-page{max-width:1200px;margin:0 auto;padding:40px 24px 80px}.page-header{margin-bottom:32px}.page-header h1{font-size:28px;font-weight:700;margin-bottom:6px}.page-header p{color:var(--fg-muted);font-size:15px}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .2s,transform 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768px){.cart-layout{grid-template-columns:1fr}}.cart-items{display:flex;flex-direction:column;gap:12px}.cart-item{display:flex;align-items:center;gap:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.cart-item-img{width:64px;height:64px;border-radius:var(--radius-sm);background:var(--bg-elev);background-size:cover;background-position:center;flex-shrink:0}.cart-item-info{flex:1}.cart-item-info h3{font-size:14px;font-weight:600;margin-bottom:4px}.cart-item-price{font-size:14px;color:var(--fg-muted)}.cart-item-actions{display:flex;align-items:center;gap:8px}.qty-btn{width:28px;height:28px;border-radius:6px;border:1px solid var(--border);background:var(--bg-elev);color:var(--fg);font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center}.qty-btn:hover{border-color:var(--accent)}.qty{font-size:14px;font-weight:600;min-width:20px;text-align:center}.remove-btn{border:none;background:none;color:var(--danger);font-size:12px;font-weight:500;cursor:pointer;margin-left:8px}.cart-summary{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;position:sticky;top:80px}.cart-summary h3{font-size:16px;font-weight:700;margin-bottom:16px}.summary-row{display:flex;justify-content:space-between;font-size:14px;color:var(--fg-muted);padding:8px 0;border-bottom:1px solid var(--border)}.summary-row.total{color:var(--fg);font-weight:700;font-size:16px;border-bottom:none;margin-bottom:16px}.checkout-form{max-width:560px}.form-grid{display:flex;flex-direction:column;gap:24px;margin-bottom:24px}.form-section 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p{color:var(--fg-muted);margin-bottom:8px}.intent-id{font-size:12px;color:var(--fg-dim);font-family:monospace;margin-bottom:24px}.empty-state{text-align:center;padding:60px 24px}.empty-state p{color:var(--fg-muted);margin-bottom:20px}.loading{text-align:center;padding:40px;color:var(--fg-muted)}.footer{border-top:1px solid var(--border);padding:32px 24px;margin-top:auto}.footer-inner{max-width:1200px;margin:0 auto;text-align:center}.footer p{font-size:13px;color:var(--fg-dim)}.footer-links{margin-top:8px}.footer-links a{color:var(--fg-muted);transition:color .15s}.footer-links a:hover{color:var(--fg)}.sep{margin:0 8px;color:var(--border)}@media (max-width: 480px){.hero{padding:60px 16px 50px}.hero-actions{flex-direction:column;align-items:center}.form-row{grid-template-columns:1fr}}.app-shell{min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--fg)}.app-header{border-bottom:1px solid 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