:root{--bg:#0D0B10;--panel:#17131D;--panel2:#211A29;--line:#382A3D;--red:#E62B46;--darkred:#A91935;--purple:#7650A4;--text:#F6F2F8;--muted:#D7CCDD;--active:#FF5570}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.8}a{color:inherit;text-decoration:none}a:hover{color:#fff}button,input{font:inherit}.wrap{width:min(1180px,calc(100% - 48px));margin:auto}.site-header{border-bottom:1px solid var(--line);background:var(--bg)}.brand-row{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px;min-width:0}.site-logo{max-height:36px;width:auto;max-width:160px;object-fit:contain}.brand-words{display:flex;flex-direction:column;line-height:1.1}.brand-words strong{font-size:18px}.brand-words em{font-style:normal;font-size:11px;letter-spacing:.12em;color:var(--muted)}.tool-links{display:flex;align-items:center;gap:22px;font-size:14px}.tool-links button,.mobile-tools button{background:none;border:0;color:var(--text);cursor:pointer;padding:8px}.main-nav{border-top:1px solid #241b29;border-bottom:1px solid var(--line)}.nav-inner{height:44px;display:flex;align-items:center;gap:30px}.nav-inner a{font-size:15px;color:var(--muted);position:relative}.nav-inner a.active{font-weight:700;color:#fff}.nav-inner a.active:after{content:"";position:absolute;height:2px;left:0;right:0;bottom:-11px;background:var(--red)}.quick-nav{background:#120f16;border-bottom:1px solid #241b29}.quick-scroll{display:flex;gap:20px;align-items:center;min-height:42px;white-space:nowrap;overflow:auto}.quick-scroll a{font-size:14px;color:var(--muted)}.mobile-tools{display:none}.search-panel,.mobile-menu{padding:18px 0 22px}.search-head,.menu-close-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.search-panel input{width:100%;background:var(--panel);border:1px solid var(--line);color:#fff;border-radius:8px;padding:12px 14px;outline:none}.search-panel input:focus{border-color:var(--active)}.search-results{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-results a{background:var(--panel2);border:1px solid var(--line);padding:7px 11px;border-radius:8px}.menu-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.menu-grid h2{font-size:15px;margin:0 0 8px}.menu-grid section div{display:grid;grid-template-columns:1fr 1fr;gap:5px 10px}.menu-grid a{font-size:14px;color:var(--muted)}.noscript-columns{padding:12px 0;display:flex;flex-wrap:wrap;gap:8px 14px;font-size:14px}.page{padding:34px 0 64px}.breadcrumbs{font-size:13px;color:#bcaec5;margin-bottom:10px}.breadcrumbs a{color:var(--muted)}h1,h2,h3{line-height:1.28;margin-top:0;color:#fff}h1{font-size:clamp(30px,4vw,34px);margin-bottom:14px}h2{font-size:clamp(22px,3vw,26px);margin-bottom:14px}h3{font-size:19px;margin-bottom:8px}.lede{max-width:780px;color:var(--muted);font-size:17px;margin:0 0 26px}.eyebrow{font-size:13px;letter-spacing:.12em;color:var(--active);font-weight:700;margin-bottom:8px}.section{margin:54px 0}.panel,.card,.article-block{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px}.panel.alt,.card.alt{background:var(--panel2)}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.grid-asym{display:grid;grid-template-columns:1.45fr .9fr;gap:24px}.stack{display:grid;gap:16px}.article{max-width:780px}.article p,.article-block p,.card p{margin:0 0 14px}.article p:last-child,.article-block p:last-child,.card p:last-child{margin-bottom:0}.link-arrow{display:inline-block;margin-top:8px;color:#ff8698;font-weight:700}.button-row{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-block;background:var(--red);color:#fff;padding:10px 15px;border-radius:9px;font-weight:700}.btn.ghost{background:transparent;border:1px solid var(--line)}.media-box{text-align:center;margin:18px 0}.content-image{max-width:100%;height:auto;max-height:220px;object-fit:contain;object-position:center;border-radius:10px}.banner-image{display:block;max-width:100%;height:auto;max-height:300px;object-fit:contain;margin:auto}.portrait-image{max-width:100%;height:auto;max-height:360px;object-fit:contain}.app-image{max-width:100%;height:auto;max-height:400px;object-fit:contain}.icon-image{width:auto;max-width:72px;max-height:72px;object-fit:contain}.hero{padding:56px 0 24px}.hero .lede{font-size:18px}.focus-major{min-height:100%}.indexed-list{display:grid;gap:10px}.indexed-list a,.indexed-row{display:grid;grid-template-columns:44px 1fr auto;gap:14px;align-items:center;border-top:1px solid var(--line);padding:14px 0}.index-no{font-weight:800;color:var(--active)}.timeline{border-left:2px solid var(--line);padding-left:24px;display:grid;gap:24px}.timeline article{position:relative}.timeline article:before{content:"";width:10px;height:10px;border-radius:50%;background:var(--red);position:absolute;left:-30px;top:8px}.note{border-left:3px solid var(--purple);padding:12px 16px;background:#1c1722;color:var(--muted)}.steps{counter-reset:step;display:grid;gap:15px}.step{counter-increment:step;padding:18px 18px 18px 62px;position:relative;background:var(--panel);border:1px solid var(--line);border-radius:12px}.step:before{content:counter(step);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--darkred);font-weight:800}.data-table{width:100%;border-collapse:collapse}.data-table th,.data-table td{border-bottom:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}.data-table th{color:#fff}.data-table td{color:var(--muted)}.faq-list details{border-top:1px solid var(--line);padding:16px 0}.faq-list summary{cursor:pointer;font-weight:700;color:#fff}.faq-list p{margin:9px 0 0;color:var(--muted)}.related{margin-top:48px;padding-top:24px;border-top:1px solid var(--line)}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related-links a{padding:8px 12px;border:1px solid var(--line);border-radius:8px;color:var(--muted)}.site-footer{border-top:1px solid var(--line);background:#0a080c;padding:42px 0 80px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-grid section{display:flex;flex-direction:column;gap:5px}.footer-grid h2{font-size:15px;margin-bottom:5px}.footer-grid a{font-size:14px;color:var(--muted)}.footer-bottom{border-top:1px solid var(--line);margin-top:28px;padding-top:20px;display:flex;justify-content:space-between;gap:24px;color:var(--muted);font-size:13px}.footer-bottom p{max-width:760px;margin:0}.footer-bottom div{display:flex;gap:12px;white-space:nowrap}.mobile-bottom{display:none}
@media(max-width:900px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-asym{grid-template-columns:1fr}.menu-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){body{font-size:15.5px;line-height:1.75;padding-bottom:64px}.wrap{width:min(100% - 32px,1180px)}.brand-row{height:60px}.site-logo{max-height:32px}.brand-words em{display:none}.desktop-tools,.main-nav{display:none}.mobile-tools{display:flex;gap:2px}.mobile-tools button{min-width:44px;min-height:44px}.quick-scroll{min-height:42px}.page{padding-top:26px}.hero{padding-top:38px}.section{margin:38px 0}.grid-2,.grid-3{grid-template-columns:1fr}.panel,.card,.article-block{padding:17px}.content-image{max-height:180px}.banner-image{max-height:220px}.portrait-image{max-height:320px}.app-image{max-height:320px}.menu-grid{grid-template-columns:1fr 1fr}.indexed-list a,.indexed-row{grid-template-columns:34px 1fr}.indexed-list a>span:last-child,.indexed-row>span:last-child{grid-column:2}.footer-grid{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column}.site-footer{padding-bottom:88px}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;z-index:50;background:#120f16;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:12px;color:var(--muted)}.mobile-bottom a span{font-size:15px;line-height:1}.mobile-bottom a.active{color:#fff;font-weight:700}.mobile-bottom a.active:before{content:"";height:2px;background:var(--red);position:absolute;top:0;width:34px}.footer-bottom div{flex-wrap:wrap;white-space:normal}}
@media(max-width:380px){.wrap{width:min(100% - 28px,1180px)}.brand-words strong{font-size:16px}.menu-grid{grid-template-columns:1fr}.menu-grid section div{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.button-row{display:grid}.btn{text-align:center}}