*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-bg: #fafafa;--color-card: #ffffff;--color-text: #111827;--color-text-secondary: #6b7280;--color-border: #e5e7eb;--color-out-of-stock: #ef4444;--color-nav-bg: #ffffff;--max-width: 1080px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}body{font-family:var(--font);background-color:var(--color-bg);color:var(--color-text);line-height:1.6}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:var(--font)}.nav{position:sticky;top:0;z-index:100;background:var(--color-nav-bg);border-bottom:1px solid var(--color-border);padding:0 24px}.nav-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:56px}.nav-logo{font-size:1.125rem;font-weight:700;color:var(--color-text);letter-spacing:-.02em}.nav-links{display:flex;gap:24px;list-style:none}.nav-links a{font-size:.9rem;color:var(--color-text-secondary);transition:color .15s;padding:4px 0;border-bottom:2px solid transparent}.nav-links a:hover{color:var(--color-text)}.nav-links a.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.page{animation:fadeIn .2s ease-in-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.hero{padding:80px 24px 64px;text-align:center;max-width:var(--max-width);margin:0 auto}.hero-brand{font-size:.875rem;font-weight:600;color:var(--color-primary);text-transform:uppercase;letter-spacing:.08em;margin-bottom:16px}.hero-title{font-size:clamp(2rem,5vw,3rem);font-weight:800;letter-spacing:-.03em;color:var(--color-text);margin-bottom:16px;line-height:1.2}.hero-tagline{font-size:1.125rem;color:var(--color-text-secondary);margin-bottom:32px}.btn-primary{display:inline-block;background:var(--color-primary);color:#fff;border:none;border-radius:8px;padding:12px 28px;font-size:1rem;font-weight:600;transition:background .15s;text-decoration:none}.btn-primary:hover{background:var(--color-primary-hover)}.support-section{padding:48px 24px;max-width:var(--max-width);margin:0 auto}.support-section h2{font-size:1.25rem;font-weight:700;margin-bottom:20px;color:var(--color-text)}.chip-group{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}.chip{background:var(--color-card);border:1px solid var(--color-border);border-radius:999px;padding:8px 18px;font-size:.9rem;color:var(--color-text);cursor:pointer;transition:border-color .15s,background .15s}.chip:hover{border-color:var(--color-primary);background:#eff6ff;color:var(--color-primary)}.test-order-note{font-size:.825rem;color:var(--color-text-secondary);background:var(--color-card);border:1px solid var(--color-border);border-radius:8px;padding:12px 16px;display:inline-block}.test-order-note code{font-family:SF Mono,Fira Code,monospace;background:#f3f4f6;padding:2px 6px;border-radius:4px;font-size:.85em;color:var(--color-text)}.page-header{padding:40px 24px 24px;max-width:var(--max-width);margin:0 auto}.page-header h1{font-size:1.75rem;font-weight:800;letter-spacing:-.02em}.page-header p{color:var(--color-text-secondary);margin-top:6px;font-size:.95rem}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:0 24px 64px;max-width:var(--max-width);margin:0 auto}@media(max-width:768px){.product-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:480px){.product-grid{grid-template-columns:1fr}}.product-card{background:var(--color-card);border:1px solid var(--color-border);border-radius:12px;overflow:hidden;transition:box-shadow .15s}.product-card:hover{box-shadow:0 4px 16px #00000014}.product-image{width:100%;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:600;letter-spacing:.04em;color:#ffffffd9;position:relative}.product-badge{position:absolute;top:12px;right:12px;background:var(--color-out-of-stock);color:#fff;font-size:.7rem;font-weight:700;padding:3px 8px;border-radius:999px;letter-spacing:.02em}.product-body{padding:16px}.product-name-zh{font-size:1rem;font-weight:700;color:var(--color-text);margin-bottom:2px}.product-name-en{font-size:.8rem;color:var(--color-text-secondary);margin-bottom:8px}.product-price{font-size:1rem;font-weight:700;color:var(--color-primary);margin-bottom:6px}.product-models{font-size:.78rem;color:var(--color-text-secondary);margin-bottom:14px;line-height:1.5}.btn-inquiry{width:100%;background:transparent;border:1px solid var(--color-primary);color:var(--color-primary);border-radius:6px;padding:8px 0;font-size:.875rem;font-weight:600;transition:background .15s,color .15s}.btn-inquiry:hover{background:var(--color-primary);color:#fff}.policies-page{padding:40px 24px 64px;max-width:720px;margin:0 auto}.policies-page h1{font-size:1.75rem;font-weight:800;letter-spacing:-.02em;margin-bottom:32px}.policy-section{margin-bottom:40px}.policy-section h2{font-size:1.125rem;font-weight:700;margin-bottom:16px;padding-bottom:8px;border-bottom:2px solid var(--color-primary);display:inline-block}.policy-list{list-style:none;display:flex;flex-direction:column;gap:10px}.policy-list li{display:flex;gap:10px;font-size:.95rem;color:var(--color-text);line-height:1.5}.policy-list li:before{content:"";flex-shrink:0;width:6px;height:6px;border-radius:50%;background:var(--color-primary);margin-top:9px}.policy-note{font-size:.85rem;color:var(--color-text-secondary);margin-top:8px;font-style:italic}.shipping-table{width:100%;border-collapse:collapse;font-size:.9rem;margin-top:4px}.shipping-table th,.shipping-table td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--color-border)}.shipping-table th{background:#f9fafb;font-weight:600;color:var(--color-text-secondary);font-size:.8rem;text-transform:uppercase;letter-spacing:.04em}.shipping-table tr:last-child td{border-bottom:none}.contact-section{background:var(--color-card);border:1px solid var(--color-border);border-radius:12px;padding:20px 24px;margin-top:16px}.contact-section p{font-size:.95rem;color:var(--color-text-secondary)}.contact-section a{color:var(--color-primary);font-weight:600}.contact-section a:hover{text-decoration:underline}