:root{--font:"Segoe UI","Microsoft YaHei UI","Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;--mono:"Cascadia Mono","JetBrains Mono","Consolas","Courier New",monospace;--bg:#0d1424;--bg-2:#111a2e;--panel:#16213a;--panel-2:#1b2942;--border:#26334f;--border-soft:#1f2b45;--text:#e9eef7;--text-2:#a9b6cf;--text-3:#7585a3;--brand:#4a8bc2;--brand-2:#6fb1e6;--brand-soft:rgba(74,139,194,0.14);--accent:#d8a94a;--radius:16px;--radius-sm:10px;--maxw:1120px;--shadow:0 18px 48px rgba(0,0,0,0.42);--shadow-soft:0 8px 24px rgba(0,0,0,0.28)}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:var(--font);background:var(--bg);color:var(--text);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;scroll-behavior:smooth}a{color:inherit;text-decoration:none}::selection{background:var(--brand);color:#fff}.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:50;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:rgba(13,20,36,.82);border-bottom:1px solid var(--border-soft)}.nav-inner{gap:28px;height:66px}.brand,.nav-inner{display:flex;align-items:center}.brand{gap:11px;font-weight:700;font-size:18px;letter-spacing:.2px}.brand-mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;font-size:15px;font-weight:800;color:#fff}.brand-sub{font-size:12px;font-weight:500;color:var(--text-3);margin-left:2px}.nav-links{display:flex;gap:24px;margin-left:auto;font-size:15px;color:var(--text-2)}.nav-links a:hover{color:var(--text)}.nav-cta{padding:9px 18px;border-radius:999px;background:var(--brand);color:#fff;font-weight:600;font-size:14px;transition:background .16s ease}.nav-cta:hover{background:var(--brand-2)}.hero{position:relative;padding:96px 0 84px;overflow:hidden;background:radial-gradient(60% 60% at 15% 0,rgba(74,139,194,.22),transparent 60%),radial-gradient(50% 60% at 90% 10%,rgba(216,169,74,.12),transparent 60%)}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border:1px solid var(--border);border-radius:999px;background:var(--panel);color:var(--brand-2);font-size:13px;font-weight:600;letter-spacing:.4px}.hero h1{font-size:52px;line-height:1.15;margin:22px 0 0;font-weight:800;letter-spacing:-.5px}.hero h1 .hl{background:linear-gradient(120deg,var(--brand-2),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}.hero p.lead{font-size:20px;color:var(--text-2);max-width:720px;margin:20px 0 0}.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:12px;font-weight:600;font-size:16px;transition:transform .12s ease,background .16s ease,border-color .16s ease}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-2);transform:translateY(-1px)}.btn-ghost{border:1px solid var(--border);color:var(--text);background:var(--panel)}.btn-ghost:hover{border-color:var(--brand)}.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}.chip{font-family:var(--mono);font-size:13px;color:var(--text-2);padding:7px 13px;border-radius:8px;background:var(--panel);border:1px solid var(--border-soft)}.stats{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:18px;gap:18px;margin-top:60px}.stat{background:var(--panel);border:1px solid var(--border-soft);border-radius:var(--radius-sm);padding:20px 22px}.stat b{font-size:26px;display:block;color:var(--text)}.stat span{font-size:14px;color:var(--text-3)}section.block{padding:80px 0;border-top:1px solid var(--border-soft)}.sec-head{max-width:720px;margin-bottom:44px}.sec-kicker{color:var(--brand-2);font-weight:700;font-size:14px;letter-spacing:1.5px;text-transform:uppercase}.sec-head h2{font-size:34px;margin:10px 0 12px;font-weight:800;letter-spacing:-.4px}.sec-head p{color:var(--text-2);font-size:17px;margin:0}.grid{display:grid;grid-gap:22px;gap:22px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.card{background:var(--panel);border:1px solid var(--border-soft);border-radius:var(--radius);padding:26px 26px 28px;transition:border-color .16s ease,transform .14s ease,box-shadow .16s ease}.card:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-soft)}.card .ico{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-2);font-size:20px;margin-bottom:16px}.card h3{font-size:19px;margin:0 0 8px;font-weight:700}.card p{margin:0;font-size:15px}.card p,.card ul{color:var(--text-2)}.card ul{margin:14px 0 0;padding-left:18px;font-size:14.5px}.card ul li{margin:5px 0}.arch{display:grid;grid-template-columns:1fr;grid-gap:18px;gap:18px}.arch-tier{border:1px dashed var(--border);border-radius:var(--radius);padding:22px;background:var(--bg-2)}.arch-tier .tier-label{font-family:var(--mono);font-size:12.5px;color:var(--text-3);text-transform:uppercase;letter-spacing:1px;margin-bottom:14px}.arch-nodes{display:flex;gap:14px;flex-wrap:wrap}.node{flex:1 1;min-width:180px;background:var(--panel);border:1px solid var(--border-soft);border-radius:var(--radius-sm);padding:16px 18px}.node b{display:block;font-size:16px;margin-bottom:3px}.node span{font-size:13.5px;color:var(--text-3)}.arch-arrow{text-align:center;color:var(--brand);font-size:22px;line-height:1}.spec{width:100%;border-collapse:collapse;border:1px solid var(--border-soft);border-radius:var(--radius);overflow:hidden}.spec td,.spec th{text-align:left;padding:14px 18px;border-bottom:1px solid var(--border-soft);font-size:15px}.spec th{width:220px;background:var(--panel);color:var(--text-2);font-weight:600;vertical-align:top}.spec tr:last-child td{border-bottom:none}.spec td{background:var(--bg-2);color:var(--text)}.tag{display:inline-block;font-family:var(--mono);font-size:12.5px;color:var(--brand-2);background:var(--brand-soft);border-radius:6px;padding:2px 8px;margin:0 6px 4px 0}.mode{position:relative}.mode .badge{position:absolute;top:20px;right:20px;font-size:12px;font-weight:700;color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:3px 10px}.faq details{border:1px solid var(--border-soft);border-radius:var(--radius-sm);background:var(--panel);padding:4px 20px;margin-bottom:12px}.faq summary{cursor:pointer;font-weight:600;font-size:16.5px;padding:14px 0;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary:before{content:"+";display:inline-block;width:22px;color:var(--brand-2);font-weight:800}.faq details[open] summary:before{content:"−"}.faq .ans{color:var(--text-2);font-size:15px;padding:0 0 16px 22px}.cta{text-align:center;padding:76px 24px;border-top:1px solid var(--border-soft);background:radial-gradient(60% 100% at 50% 0,rgba(74,139,194,.18),transparent 70%)}.cta h2{font-size:32px;margin:0 0 12px;font-weight:800}.cta p{color:var(--text-2);font-size:17px;margin:0 0 30px}footer.foot{border-top:1px solid var(--border-soft);background:var(--bg-2);padding:40px 0 30px;color:var(--text-3);font-size:14px}.foot-inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.foot a{color:var(--text-2)}.foot a:hover{color:var(--text)}.foot-links{display:flex;gap:22px}@media (max-width:900px){.hero h1{font-size:38px}.grid-3,.grid-4,.stats{grid-template-columns:repeat(2,1fr)}.nav-links{display:none}}@media (max-width:620px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.sec-head h2{font-size:27px}.spec th{width:130px}}