:root{--zinc-50: #fafafa;--zinc-100: #f4f4f5;--zinc-200: #e4e4e7;--zinc-300: #d4d4d8;--zinc-400: #a1a1aa;--zinc-500: #71717a;--zinc-600: #52525b;--zinc-700: #3f3f46;--zinc-800: #27272a;--zinc-900: #18181b;--blue-500: #3b82f6;--blue-600: #2563eb;--blue-700: #1d4ed8}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,system-ui,-apple-system,sans-serif;color:var(--zinc-900);background:#fff;line-height:1.6}a{color:inherit;text-decoration:none}.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:#ffffffd9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--zinc-200)}.site-header .container{max-width:1200px;margin:0 auto;padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between}.site-logo{font-size:18px;font-weight:700;color:var(--zinc-900)}.site-nav{display:flex;align-items:center;gap:24px}.site-nav a{font-size:14px;color:var(--zinc-600);font-weight:500;transition:color .15s}.site-nav a:hover,.site-nav a.active{color:var(--zinc-900)}.site-lang{padding:4px 8px;background:var(--zinc-100);color:var(--zinc-600);border:1px solid var(--zinc-200);border-radius:6px;font-size:13px;cursor:pointer}.menu-toggle{display:none;background:none;border:none;cursor:pointer;width:32px;height:32px;position:relative}.menu-toggle span{display:block;width:20px;height:2px;background:var(--zinc-700);position:absolute;left:6px;transition:all .2s}.menu-toggle span:nth-child(1){top:10px}.menu-toggle span:nth-child(2){top:15px}.menu-toggle span:nth-child(3){top:20px}@media(max-width:640px){.menu-toggle{display:block}.site-nav{display:none;position:absolute;top:56px;left:0;right:0;background:#fff;border-bottom:1px solid var(--zinc-200);flex-direction:column;padding:16px 24px;gap:12px}.site-nav.open{display:flex}}.site-footer{background:var(--zinc-900);color:var(--zinc-400);padding:48px 0}.site-footer .container{max-width:1200px;margin:0 auto;padding:0 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28px;background:var(--blue-600);color:#fff;border-radius:8px;font-size:15px;font-weight:600;transition:background .15s}.btn-primary:hover{background:var(--blue-700)}.section{padding:64px 24px}.section .container{max-width:1200px;margin:0 auto}.section-title{font-size:clamp(22px,3vw,32px);font-weight:700;text-align:center;margin-bottom:8px}.section-subtitle{font-size:16px;color:var(--zinc-500);text-align:center;margin-bottom:40px}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.card{border:1px solid var(--zinc-200);border-radius:12px;padding:24px;transition:border-color .2s,box-shadow .2s;display:flex;flex-direction:column}.card:hover{border-color:var(--blue-500);box-shadow:0 4px 16px #3b82f61a}.card-media{width:100%;aspect-ratio:1/1;object-fit:contain;border-radius:8px;margin-bottom:16px;background:var(--zinc-100)}.card h3{font-size:18px;font-weight:600;margin-bottom:8px}.card 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button:hover{background:var(--blue-700)}.steps-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px;margin-top:32px}.step-card{text-align:center;padding:24px}.step-num{width:40px;height:40px;border-radius:50%;background:var(--blue-600);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;margin:0 auto 16px}.step-card h3{font-size:16px;font-weight:600;margin-bottom:8px}.step-card p{font-size:14px;color:var(--zinc-500);line-height:1.6}.features-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;margin-top:32px}.feature-card{padding:24px;border:1px solid var(--zinc-200);border-radius:12px;background:#fff}.feature-card h3{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--zinc-800)}.feature-card p{font-size:14px;color:var(--zinc-500);line-height:1.6}.guide-content{max-width:800px;margin:32px auto 0}.guide-content h3{font-size:18px;font-weight:600;color:var(--zinc-800);margin-top:28px;margin-bottom:10px}.guide-content p{font-size:15px;color:var(--zinc-600);line-height:1.7;margin-bottom:16px}.compare-table-wrap{overflow-x:auto;margin-top:32px}.compare-table{width:100%;border-collapse:collapse;font-size:14px}.compare-table th{text-align:left;padding:12px 16px;background:var(--zinc-100);font-weight:600;color:var(--zinc-700);border-bottom:2px solid var(--zinc-200)}.compare-table td{padding:12px 16px;border-bottom:1px solid var(--zinc-200);color:var(--zinc-600)}.compare-table tr:hover td{background:var(--zinc-50)}.export-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}@media(max-width:640px){.export-grid{grid-template-columns:1fr}}.export-card{background:var(--zinc-50);border-radius:12px;padding:32px;border:1px solid var(--zinc-200)}.export-card h3{font-size:18px;font-weight:600;margin-bottom:8px}.export-card p{font-size:14px;color:var(--zinc-500);line-height:1.6}