:root{color-scheme:dark;--bg:#07101d;--panel:rgba(11,18,32,.92);--panel-2:rgba(15,24,42,.98);--line:rgba(123,177,255,.14);--text:#eef3ff;--muted:#a6b3cb;--accent:#8c95ff;--accent-2:#8ae4ff;--shadow:0 24px 60px rgba(0,0,0,.34);--radius-xl:28px;--radius-lg:22px;--container:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth;word-break:normal;overflow-wrap:normal;white-space:normal}body{margin:0;min-width:320px;color:var(--text);background:radial-gradient(circle at 12% 12%,rgba(140,149,255,.16),transparent 28%),radial-gradient(circle at 85% 14%,rgba(123,177,255,.08),transparent 24%),linear-gradient(180deg,#07101d 0%,#09111f 100%);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;font-size:17px;line-height:1.72;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;word-break:normal;overflow-wrap:normal;white-space:normal}
a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}
h1,h2,h3,p,span,li,td,th{word-break:normal;overflow-wrap:normal;white-space:normal}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
.site-header{position:sticky;top:0;z-index:30;backdrop-filter:blur(18px);background:rgba(5,9,18,.92);border-bottom:1px solid var(--line)}
.header-inner{min-height:84px;display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center}
.brand{display:inline-flex;align-items:center;gap:12px}.brand__mark{width:40px;height:40px;object-fit:contain;flex:0 0 auto}.brand__text{display:flex;flex-direction:column;gap:2px}.brand__name{font-size:16px;font-weight:800;line-height:1.1}.brand__sub{font-size:11px;color:var(--muted);line-height:1.1}
.nav,.topbar__actions,.hero-actions,.cta-actions,.chip-row,.mini-rail{display:flex;flex-wrap:wrap;gap:10px}.nav{justify-content:center;align-items:center}.nav a{min-height:38px;display:inline-flex;align-items:center;padding:0 14px;border-radius:999px;color:var(--muted);background:rgba(255,255,255,.04);border:1px solid transparent}.nav a.is-active,.nav a:hover{color:var(--text);border-color:rgba(255,255,255,.12);background:rgba(107,164,255,.14)}.btn{min-height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 16px;border-radius:999px;font-weight:700;border:1px solid transparent;transition:transform .18s ease,background .18s ease,border-color .18s ease}.btn:hover{transform:translateY(-1px)}.btn--primary{color:#06101d;background:linear-gradient(135deg,var(--accent),var(--accent-2))}.btn--ghost{color:var(--text);background:rgba(255,255,255,.05);border-color:var(--line)}.btn--soft{color:#06101d;background:linear-gradient(135deg,rgba(255,255,255,.92),rgba(255,255,255,.76));border-color:transparent}
main{padding-bottom:48px}section{padding:30px 0}.hero{padding-top:28px}.hero-grid,.hero-split,.hero-center,.content-split,.card-grid,.faq-grid,.cta-panel,.footer-grid,.timeline-grid,.matrix-grid,.tree-grid{display:grid;gap:16px}
.hero-grid,.hero-split,.content-split{grid-template-columns:minmax(0,1.02fr) minmax(320px,.98fr);align-items:center}
.hero-center{justify-items:center;text-align:center}.hero-center .lead{max-width:72ch}
.hero-copy{min-width:0}.hero-stack{display:grid;gap:14px;min-width:0}.hero-side{padding:18px 20px;border-radius:24px;background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow)}
.hero-media,.content-image{overflow:hidden;border-radius:24px;background:var(--panel-2);border:1px solid var(--line);box-shadow:var(--shadow)}
.hero-media img{width:100%;max-height:520px;object-fit:cover}.content-image img{width:100%;max-height:420px;object-fit:contain;background:#09111c}
.hero-list{margin:14px 0 0;padding-left:18px;color:var(--muted)}.hero-list li+li{margin-top:8px}
.eyebrow{margin:0 0 10px;color:#8ae4ff;font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}
h1{margin:0;font-size:clamp(36px,4.6vw,56px);line-height:1.08;letter-spacing:-.02em}h2{margin:0;font-size:clamp(24px,2.7vw,36px);line-height:1.14}h3{margin:0;font-size:20px;line-height:1.22}
.lead,.section-lead,.hero-side p,.footer-brand p,.faq-body,.info-card p,.step-card p,.feature-card p,.check-card p,.link-card p,.timeline-card p,.matrix-card p,.tree-card p,.rail-card span{color:var(--muted)}
.lead{margin:18px 0 0;max-width:68ch;font-size:18px}.section-head{display:grid;gap:8px;margin-bottom:22px}.section-head>div{min-width:0}.section-head p{margin:0;max-width:74ch}.section-lead{font-size:16px}
.chip{display:inline-flex;align-items:center;min-height:32px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);font-size:13px}
.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.card-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.info-card,.feature-card,.step-card,.check-card,.link-card,.timeline-card,.matrix-card,.tree-card,.rail-card{padding:18px;border-radius:20px;background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow)}
.card-kicker,.timeline-tag{display:inline-flex;align-items:center;min-height:26px;padding:0 10px;border-radius:999px;background:rgba(255,255,255,.06);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--text)}
.step-num{display:inline-flex;align-items:center;justify-content:center;min-height:30px;min-width:42px;padding:0 10px;border-radius:999px;background:rgba(255,255,255,.06);margin-bottom:10px;font-size:12px;font-weight:800}
.content-split.reverse{grid-template-columns:minmax(320px,.95fr) minmax(0,1.05fr)}
.mini-split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:14px}
.mini-rail{margin-top:14px}.rail-card{flex:1 1 160px}.rail-card strong{display:block;margin-bottom:6px}
.data-table{width:100%;border-collapse:collapse;overflow:hidden;border-radius:18px;background:var(--panel);border:1px solid var(--line);margin-top:16px}.data-table th,.data-table td{padding:14px 16px;text-align:left;border-bottom:1px solid rgba(255,255,255,.06);vertical-align:top}.data-table th{font-size:14px;color:var(--text);background:rgba(255,255,255,.04)}.data-table td{font-size:15px;color:var(--muted)}.data-table tr:last-child td{border-bottom:none}
.faq-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.faq-grid details{padding:18px 20px;border-radius:18px;background:rgba(255,255,255,.03);border:1px solid var(--line)}.faq-grid summary{cursor:pointer;list-style:none;font-weight:700}.faq-grid summary::-webkit-details-marker{display:none}.faq-body{margin-top:10px}
.section-cta{padding-bottom:18px}.cta-panel{grid-template-columns:minmax(0,1.05fr) auto;align-items:center;padding:26px 28px;border-radius:var(--radius-xl);background:radial-gradient(circle at top right,rgba(140,149,255,.16),transparent 24%),var(--panel)}.cta-panel p{margin:12px 0 0;max-width:70ch}
.site-footer{padding:26px 0 10px;background:linear-gradient(180deg,rgba(12,18,31,.98),rgba(7,13,24,.99));border-top:1px solid var(--line)}.footer-grid{grid-template-columns:1.15fr .85fr;align-items:start}.footer-brand p{margin:16px 0 0}.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.footer-links h3{margin:0 0 12px;font-size:18px}.footer-links ul{list-style:none;padding:0;margin:0}.footer-links li+li{margin-top:10px}.footer-links a{color:var(--muted)}.footer-links a:hover{color:var(--text)}
body.theme-window{--accent:#6ba4ff;--accent-2:#79e0ff}
body.theme-mac{--accent:#7a9bff;--accent-2:#89d9ff}
body.theme-android{--accent:#7fd4ff;--accent-2:#a2f0c9}
body.theme-ios{--accent:#8c95ff;--accent-2:#8ae4ff}
body.theme-update{--accent:#8d7cff;--accent-2:#7fd5ff}
body.theme-help{--accent:#ffbf73;--accent-2:#8ed9ff}
body.theme-security{--accent:#72e0c7;--accent-2:#7bb1ff}
body.theme-hub{--accent:#79e0ff;--accent-2:#8d7cff}
@media (max-width:1100px){.header-inner,.hero-grid,.hero-split,.content-split,.cta-panel,.footer-grid{grid-template-columns:1fr}.nav{justify-content:flex-start}.card-grid-4,.card-grid,.faq-grid,.footer-links,.mini-split,.timeline-grid,.matrix-grid,.tree-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:720px){body{font-size:16px}.container{padding:0 20px}.header-inner{min-height:76px}.brand__mark{width:34px;height:34px}.nav a{font-size:13px}.btn{min-height:40px;padding:0 14px}.hero,.section{padding:24px 0}.card-grid-4,.card-grid,.faq-grid,.footer-links,.mini-split,.timeline-grid,.matrix-grid,.tree-grid{grid-template-columns:1fr}.cta-panel{padding:20px}.hero-media img{max-height:420px}.content-image img{max-height:300px}.hero-center .lead{max-width:100%}}