:root{--primary:#6C4FF8;--primary-soft:#9B8AFB;--deep:#1E1B2E;--bg:#F7F6FB;--sub:#EEEAF8;--text:#252331;--muted:#716E7E;--accent:#F06A8A;--white:#fff;--line:#ddd8eb;--shadow:0 18px 50px rgba(41,31,83,.10);--radius:24px;--small-radius:16px;--shell:min(1180px,calc(100% - 40px))}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.72}img{max-width:100%;height:auto;display:block}a{color:inherit}.shell{width:var(--shell);margin-inline:auto}.narrow{max-width:860px}.skip-link{position:absolute;left:16px;top:-60px;background:var(--deep);color:#fff;padding:10px 14px;border-radius:10px;z-index:100}.skip-link:focus{top:16px}.site-header{position:sticky;top:0;z-index:30;background:rgba(247,246,251,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(108,79,248,.10)}.header-inner{min-height:76px;display:flex;align-items:center;gap:28px}.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;font-weight:800;font-size:1.12rem;color:var(--deep)}.brand img{border-radius:12px}.site-nav{margin-left:auto;display:flex;align-items:center;gap:4px}.site-nav a{text-decoration:none;color:var(--muted);padding:10px 13px;border-radius:999px;font-size:.95rem}.site-nav a:hover,.site-nav a[aria-current=page]{background:var(--sub);color:var(--deep)}.nav-toggle{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:12px;padding:9px 13px;font:inherit}.hero{padding:72px 0 54px}.hero-grid,.compact-grid,.two-col{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center}.eyebrow{margin:0 0 10px;color:var(--primary);text-transform:uppercase;letter-spacing:.08em;font-size:.82rem;font-weight:800}.hero h1,.page-hero h1{margin:0;color:var(--deep);font-size:clamp(2.3rem,5vw,4.8rem);line-height:1.05;letter-spacing:-.045em}.page-hero h1{font-size:clamp(2.2rem,4.2vw,4rem)}.lead{font-size:1.14rem;color:var(--muted);max-width:720px}.lead.small{font-size:1.05rem}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;border:1px solid var(--line);background:#fff;color:var(--deep);padding:12px 18px;border-radius:14px;font-weight:750;transition:.2s ease}.button:hover{transform:translateY(-1px);box-shadow:var(--shadow)}.button.primary{background:var(--primary);border-color:var(--primary);color:#fff}.quick-facts{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px}.quick-facts span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 11px;color:var(--muted);font-size:.88rem}.hero-media img,.page-hero img,.portrait-media img,.official-grid figure img{border-radius:34px;box-shadow:var(--shadow);object-fit:cover}.section{padding:78px 0}.section-tight{padding-top:40px}.alt-section{background:var(--sub)}.section-heading{max-width:760px;margin-bottom:34px}.section-heading h2,.section h2,.content-band h2,.section-inline h2,.reading-box h2,.official-grid h2,.download-note h2,.comparison-table-wrap h2{margin:0;color:var(--deep);font-size:clamp(1.65rem,3.2vw,2.7rem);line-height:1.15;letter-spacing:-.03em}.section-heading p:last-child{color:var(--muted)}.split-panel{display:grid;grid-template-columns:1fr .9fr;gap:40px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}.wide-media img{border-radius:20px}.prose p{color:var(--muted)}.text-link{display:inline-flex;margin-top:8px;color:var(--primary);font-weight:800;text-decoration:none}.text-link:hover{text-decoration:underline}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.info-card{background:#fff;border:1px solid rgba(108,79,248,.12);border-radius:var(--small-radius);padding:24px;box-shadow:0 10px 30px rgba(41,31,83,.05)}.info-card h3{margin:0 0 8px;color:var(--deep);font-size:1.25rem}.info-card p{color:var(--muted)}.compact-grid{gap:64px}.portrait-media img{aspect-ratio:4/4.6;object-fit:cover}.topic-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:18px}.topic-list article{padding:22px;border-left:4px solid var(--primary);background:rgba(255,255,255,.68);border-radius:0 14px 14px 0}.topic-list h3{margin-top:0}.topic-list p{color:var(--muted)}.final-cta{padding-top:44px}.final-cta-inner{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;background:var(--deep);color:#fff;border-radius:28px;padding:36px}.final-cta-inner h2{color:#fff}.final-cta-inner p{color:#d9d4eb}.page-main{padding:30px 0 76px}.breadcrumb ol{list-style:none;padding:0;margin:0 0 28px;display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:.9rem}.breadcrumb li:not(:last-child)::after{content:"/";margin-left:8px;color:#b6b0c8}.breadcrumb a{text-decoration:none}.page-hero{padding:40px 0 54px}.page-hero.text-only{max-width:900px}.content-band{padding:34px 0;border-top:1px solid var(--line)}.content-band.muted{background:linear-gradient(90deg,transparent,var(--sub),transparent)}.content-band-head{display:grid;grid-template-columns:80px 1fr;gap:20px;align-items:start}.band-index{font-size:2rem;font-weight:900;color:var(--primary-soft)}.content-band-head p{color:var(--muted);max-width:840px}.feature-list{list-style:none;padding:0;margin:22px 0 0 100px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.feature-list li{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.feature-list strong,.feature-list span{display:block}.feature-list span{margin-top:5px;color:var(--muted);font-size:.94rem}.section-inline{display:grid;grid-template-columns:1fr .8fr;gap:40px;align-items:center;padding:48px 0;border-top:1px solid var(--line)}.section-inline.reverse{grid-template-columns:.8fr 1fr}.section-inline.reverse .prose{order:2}.section-inline img{border-radius:20px}.reading-box{margin-top:36px;background:var(--sub);border-radius:22px;padding:28px}.official-grid{display:grid;grid-template-columns:1fr .75fr;gap:38px;align-items:center;margin-bottom:50px}.official-primary{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px}.checklist{display:grid;gap:12px;margin-top:20px}.checklist div{padding:15px;background:var(--bg);border-radius:12px}.checklist strong,.checklist span{display:block}.checklist span{color:var(--muted);font-size:.94rem;margin-top:4px}.device-stack{display:grid;gap:18px}.device-card{display:grid;grid-template-columns:.85fr 1.15fr;gap:30px;padding:26px;background:#fff;border:1px solid var(--line);border-radius:20px}.device-card h2{margin:0;font-size:1.7rem}.device-card p,.device-card li{color:var(--muted)}.device-card ul{margin:0;padding-left:20px}.download-note{display:grid;grid-template-columns:1fr .7fr;gap:34px;align-items:center;margin:48px 0;padding:30px;background:var(--deep);border-radius:24px;color:#fff}.download-note h2{color:#fff}.download-note p{color:#d7d1e7}.download-note img{border-radius:18px}.comparison-table-wrap{margin:54px 0}.comparison-table{display:grid;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff;margin-top:20px}.comparison-table .row{display:grid;grid-template-columns:.5fr 1fr 1.25fr}.comparison-table .row>div{padding:14px 16px;border-top:1px solid var(--line)}.comparison-table .row.head>div{border-top:0;background:var(--sub);font-weight:800}.comparison-table .row>div+div{border-left:1px solid var(--line)}.topic-deep-list{display:grid;gap:0}.topic-deep-list article{display:grid;grid-template-columns:80px 1fr;gap:22px;padding:34px 0;border-top:1px solid var(--line)}.topic-no{font-size:2rem;color:var(--primary-soft);font-weight:900}.topic-deep-list h2{margin:0;color:var(--deep);font-size:1.85rem}.topic-deep-list p{color:var(--muted)}.faq-list{display:grid;gap:12px;margin:10px 0 36px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 18px}.faq-list summary{cursor:pointer;font-weight:800;padding:17px 0}.faq-list details div{padding:0 0 18px;color:var(--muted)}.error-panel{margin:90px 0;background:#fff;border:1px solid var(--line);border-radius:24px;padding:40px}.site-footer{border-top:1px solid var(--line);padding:42px 0 22px;background:#fff}.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}.footer-brand{font-size:1.3rem}.footer-grid p{color:var(--muted);max-width:560px}.footer-links{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;align-content:start}.footer-links a{text-decoration:none;color:var(--muted)}.footer-links a:hover{color:var(--primary)}.footer-bottom{display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:.9rem;padding-top:24px;margin-top:24px;border-top:1px solid var(--line)}:focus-visible{outline:3px solid color-mix(in srgb,var(--accent),white 30%);outline-offset:3px}@media(max-width:900px){.hero-grid,.compact-grid,.two-col,.split-panel,.official-grid,.section-inline,.section-inline.reverse,.download-note{grid-template-columns:1fr}.card-grid,.topic-list,.feature-list{grid-template-columns:1fr}.feature-list{margin-left:0}.device-card{grid-template-columns:1fr}.site-nav{position:absolute;left:20px;right:20px;top:68px;display:none;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:var(--shadow)}.site-nav.open{display:flex}.nav-toggle{display:block}.section-inline.reverse .prose{order:initial}.hero-media{order:-1}.hero{padding-top:34px}}@media(max-width:640px){:root{--shell:min(100% - 24px,1180px)}.header-inner{min-height:68px}.brand span{font-size:1rem}.hero h1,.page-hero h1{font-size:2.35rem}.section{padding:56px 0}.page-main{padding-top:20px}.hero-grid,.compact-grid,.two-col{gap:28px}.final-cta-inner{display:block;padding:24px}.content-band-head,.topic-deep-list article{grid-template-columns:1fr}.band-index,.topic-no{font-size:1.3rem}.comparison-table{overflow-x:auto}.comparison-table .row{min-width:650px}.footer-grid{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.button{width:100%}.button-row{width:100%}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
