*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F7F6FB;color:#252331;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.72}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:min(1160px,calc(100% - 40px));margin-inline:auto}.narrow{width:min(760px,calc(100% - 40px))}.skip-link{position:absolute;left:16px;top:-80px;background:#1E1B2E;color:#fff;padding:10px 14px;border-radius:8px;z-index:100}.skip-link:focus{top:12px}.site-head{position:sticky;top:0;z-index:50;background:rgba(247,246,251,.93);backdrop-filter:blur(14px);border-bottom:1px solid #e1ddea}.head-inner{min-height:74px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.08rem;white-space:nowrap}.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:12px;background:#6C4FF8;color:#fff;box-shadow:0 8px 20px rgba(108,79,248,.25)}.site-nav{margin-left:auto;display:flex;gap:4px;align-items:center}.site-nav a{padding:9px 13px;border-radius:999px;color:#5e5a69;font-size:.95rem}.site-nav a:hover,.site-nav a[aria-current="page"]{background:#EEEAF8;color:#1E1B2E}.menu-button{display:none;margin-left:auto;border:1px solid #ddd7e8;background:#fff;padding:8px 12px;border-radius:10px;color:#252331}.hero{padding:68px 0 52px;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}.hero h1,.article-hero h1{font-size:clamp(2.35rem,5vw,4.5rem);line-height:1.03;letter-spacing:-.045em;margin:.25em 0 .28em;color:#1E1B2E}.lead{font-size:1.13rem;color:#5d5968;max-width:760px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-weight:800;font-size:.78rem;color:#6C4FF8;margin:0 0 8px}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 22px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:14px;font-weight:750;border:1px solid transparent}.button.primary{background:#6C4FF8;color:#fff;box-shadow:0 12px 30px rgba(108,79,248,.23)}.button.primary:hover{background:#5e43e6}.button.quiet{background:#fff;border-color:#ddd7e8;color:#312d3a}.hero-points{list-style:none;padding:0;margin:28px 0 0;display:flex;flex-wrap:wrap;gap:10px}.hero-points li{background:#EEEAF8;color:#514d5d;padding:7px 11px;border-radius:999px;font-size:.9rem}.hero-media{margin:0;position:relative}.hero-media img,.article-hero img,.split-layout img,.device-teaser img{border-radius:28px;box-shadow:0 24px 60px rgba(39,30,71,.14);background:#EEEAF8}.hero-media figcaption{position:absolute;left:20px;bottom:18px;background:rgba(30,27,46,.82);color:#fff;padding:8px 12px;border-radius:10px;font-size:.84rem}.focus-block,.note-section,.index-links{padding:54px 0}.section-heading{max-width:720px;margin-bottom:28px}.section-heading h2,.split-layout h2,.device-copy h2,.index-links h2{font-size:clamp(1.75rem,3vw,2.7rem);line-height:1.15;letter-spacing:-.025em;margin:0 0 12px;color:#1E1B2E}.section-heading p:last-child,.split-layout p,.device-copy>p{color:#6b6675}.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.link-card,.note-card,.sticky-card{background:#fff;border:1px solid #e3deec;border-radius:20px;padding:24px;box-shadow:0 12px 30px rgba(35,29,57,.045)}.link-card h3,.note-card h3{margin:6px 0 10px;font-size:1.25rem;color:#1E1B2E}.link-card p,.note-card p{color:#6a6575;margin:0 0 16px}.text-link{font-weight:750;color:#6C4FF8}.text-link:hover{color:#F06A8A}.split-band{background:#EEEAF8;margin:56px 0}.split-layout{display:grid;grid-template-columns:1fr .92fr;align-items:center;gap:54px;padding-block:58px}.notes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.device-teaser{padding:60px 0;display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:56px}.info-rows{margin:24px 0 30px;border-top:1px solid #ded9e8}.info-rows div{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:13px 0;border-bottom:1px solid #ded9e8}.info-rows dt{font-weight:800;color:#1E1B2E}.info-rows dd{margin:0;color:#686373}.text-index{border-top:1px solid #ddd8e7}.text-index a{display:grid;grid-template-columns:minmax(210px,.75fr) 1fr;gap:28px;padding:18px 4px;border-bottom:1px solid #ddd8e7}.text-index a:hover strong{color:#6C4FF8}.text-index span{color:#746f7f}.breadcrumb{padding-top:26px}.breadcrumb ol{display:flex;gap:8px;list-style:none;padding:0;margin:0;color:#7b7686;font-size:.9rem}.breadcrumb li+li:before{content:"/";margin-right:8px;color:#aaa4b4}.breadcrumb a:hover{color:#6C4FF8}.article-hero{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;padding:42px 0 56px}.article-hero h1{font-size:clamp(2.2rem,4.5vw,3.9rem)}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:54px;align-items:start;padding-bottom:70px}.article-section{padding:0 0 34px;margin:0 0 34px;border-bottom:1px solid #ded9e8}.article-section:last-child{border-bottom:0}.article-section h2{font-size:1.65rem;line-height:1.25;color:#1E1B2E;margin:0 0 14px}.article-section p{font-size:1.03rem;color:#4f4a59;margin:0 0 14px}.check-list{padding-left:1.25rem;color:#4f4a59}.check-list li{margin:.55rem 0}.sticky-card{position:sticky;top:96px}.sticky-card h2{font-size:1rem;margin:0 0 12px}.sticky-card a{display:block;padding:10px 0;border-top:1px solid #eeeaf4;color:#5f5a6b}.sticky-card a:hover{color:#6C4FF8}.error-panel{margin:80px auto;background:#fff;border:1px solid #e1dce9;border-radius:24px;padding:40px}.error-panel h1{font-size:2.3rem;margin:.2em 0}.site-foot{margin-top:40px;background:#1E1B2E;color:#dcd7e8}.footer-grid{padding:38px 0;display:grid;grid-template-columns:1.3fr 1fr auto;gap:36px;align-items:start}.site-foot strong{color:#fff;font-size:1.1rem}.site-foot p{color:#aaa3b8;max-width:500px}.site-foot nav{display:grid;grid-template-columns:repeat(2,minmax(120px,1fr));gap:7px 18px}.site-foot nav a:hover{color:#fff}.copyright{margin:0;white-space:nowrap}@media (max-width:900px){.hero,.split-layout,.device-teaser,.article-hero{grid-template-columns:1fr}.hero{padding-top:42px}.hero-media{max-width:680px}.path-grid,.notes-grid{grid-template-columns:1fr 1fr}.article-layout{grid-template-columns:1fr}.sticky-card{position:static}.article-aside{order:-1}.footer-grid{grid-template-columns:1fr 1fr}.copyright{grid-column:1/-1}.article-hero img{max-width:650px}}@media (max-width:680px){.shell,.narrow{width:min(100% - 28px,1160px)}.head-inner{min-height:64px}.menu-button{display:inline-flex}.site-nav{display:none;position:absolute;top:64px;left:14px;right:14px;background:#fff;border:1px solid #ddd7e8;border-radius:16px;padding:10px;box-shadow:0 18px 45px rgba(31,27,46,.14);flex-direction:column;align-items:stretch}.site-nav.is-open{display:flex}.site-nav a{border-radius:10px}.hero{gap:32px}.hero h1,.article-hero h1{font-size:2.6rem}.path-grid,.notes-grid{grid-template-columns:1fr}.split-band{margin:30px 0}.split-layout,.device-teaser{gap:30px;padding-block:42px}.text-index a{grid-template-columns:1fr;gap:3px}.article-layout{gap:28px}.article-hero{padding-bottom:38px}.footer-grid{grid-template-columns:1fr}.copyright{grid-column:auto}.site-foot nav{grid-template-columns:1fr 1fr}.info-rows div{grid-template-columns:1fr;gap:4px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}:focus-visible{outline:3px solid #F06A8A;outline-offset:3px;border-radius:6px}

.glossary-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;padding-bottom:36px}.glossary-grid h2{font-size:1.12rem;margin:0 0 8px;color:#1E1B2E}@media(max-width:680px){.glossary-grid{grid-template-columns:1fr}}
