:root{--bg:#0D0B10;--panel:#17131D;--panel2:#211A29;--line:#382A3D;--red:#E62B46;--red2:#A91935;--purple:#7650A4;--text:#F6F2F8;--muted:#D7CCDD;--active:#FF5570;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.78}a{color:inherit;text-decoration:none}a:hover{color:var(--active)}button,input{font:inherit}.shell{width:min(var(--max),calc(100% - 48px));margin-inline: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}.brand .logo{max-height:36px;width:auto;object-fit:contain}.brand span{display:grid;line-height:1.1}.brand b{font-size:19px;letter-spacing:.04em}.brand small{font-size:10px;color:var(--muted);letter-spacing:.15em;margin-top:4px}.tools{display:flex;align-items:center;gap:22px;font-size:14px}.plain-btn,.menu-btn{border:0;background:none;color:var(--text);padding:10px;cursor:pointer}.plain-btn:focus-visible,.menu-btn:focus-visible,.btn:focus-visible,a:focus-visible{outline:2px solid var(--active);outline-offset:3px}.main-nav{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.nav-line{height:45px;display:flex;align-items:center;gap:34px}.nav-line a{font-size:15px;position:relative;font-weight:600}.nav-line a.active:after{content:"";position:absolute;left:0;right:0;bottom:-13px;height:2px;background:var(--red)}.quick-bar{background:var(--panel)}.quick-scroll{height:42px;display:flex;align-items:center;gap:22px;overflow-x:auto;white-space:nowrap;scrollbar-width:none}.quick-scroll a{font-size:13px;color:var(--muted)}.all-menu{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding-block:24px;border-bottom:1px solid var(--line)}.all-menu h2{font-size:14px;margin:0 0 8px;color:#fff}.all-menu a{display:block;color:var(--muted);font-size:13px;padding:3px 0}.search-panel{padding:20px 0;border-bottom:1px solid var(--line)}.search-panel label{font-weight:700}.search-row{display:flex;gap:10px;margin-top:10px}.search-row input{flex:1;min-width:0;background:var(--panel);border:1px solid var(--line);color:#fff;padding:11px 12px;border-radius:8px}.search-row button{background:var(--panel2);border:1px solid var(--line);color:#fff;border-radius:8px;padding:0 18px}.search-results{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-results a{padding:6px 10px;border:1px solid var(--line);border-radius:8px;font-size:13px}.page-main{padding-top:48px;padding-bottom:72px}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:12px}.page-title{font-size:34px;line-height:1.2;margin:0 0 14px}.lead{font-size:17px;color:var(--muted);max-width:780px}.hero{padding:8px 0 30px}.eyebrow{color:var(--active);font-size:13px;font-weight:800;letter-spacing:.15em}.hero h1{font-size:34px;line-height:1.2;margin:10px 0 14px}.actions{display:flex;gap:10px;margin-top:22px}.btn{display:inline-flex;padding:10px 16px;background:var(--red);border-radius:9px;font-weight:700}.btn.secondary{background:var(--panel2);border:1px solid var(--line)}.media-wrap{margin:18px 0 0;display:flex;justify-content:center;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:10px}.content-img{max-width:100%;max-height:220px;height:auto;width:auto;object-fit:contain;object-position:center}.banner-img{max-width:100%;max-height:300px;height:auto;width:auto;object-fit:contain}.app-img{max-width:100%;max-height:400px;height:auto;width:auto;object-fit:contain}.section{padding:54px 0;border-top:1px solid var(--line)}.section-head{display:flex;align-items:baseline;gap:12px;margin-bottom:18px}.section-head span{color:var(--active);font-size:12px;font-weight:800}.section h2,.section-head h2{margin:0;font-size:26px}.feature-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:18px}.feature{background:var(--panel);padding:20px;border:1px solid var(--line);border-radius:12px}.feature.large{grid-row:span 2}.feature h3{margin:0 0 10px;font-size:20px}.split{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:start}.split.reverse{grid-template-columns:.9fr 1.1fr}.stack-list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}.stack-list a{background:var(--panel);padding:20px;display:grid}.stack-list span{color:var(--muted);font-size:14px;margin-top:4px}.narrow{max-width:860px;margin-inline:auto}.centered{text-align:center}.center{justify-content:center}.anchor-row,.service-links{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:20px}.anchor-row a,.service-links a{border:1px solid var(--line);background:var(--panel);padding:8px 12px;border-radius:8px}.number-path{list-style:none;padding:0;margin:0}.number-path li{border-bottom:1px solid var(--line)}.number-path a{display:flex;justify-content:space-between;gap:16px;padding:18px 0}.number-path span{color:var(--muted)}.editorial-pair,.panels{display:grid;grid-template-columns:1fr 1fr;gap:22px}.editorial-pair article,.panels article{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px}.panels .wide{transform:translateY(18px)}.text-link{font-weight:700;color:var(--active)}.shelf{border-top:1px solid var(--line)}.shelf>div{display:grid;grid-template-columns:48px 1fr auto;gap:14px;align-items:center;padding:15px 0;border-bottom:1px solid var(--line)}.shelf b{color:var(--active)}.shelf strong{display:block}.shelf span{color:var(--muted)}.content-header{max-width:820px}.article-layout{display:grid;grid-template-columns:minmax(0,780px) 1fr;gap:38px;align-items:start;margin-top:28px}.article-body{min-width:0}.article-section{padding:26px 0;border-top:1px solid var(--line)}.article-section:first-child{border-top:0}.article-section h2{font-size:23px;margin:0 0 10px}.article-section p{margin:0;color:var(--text)}.side-note{position:sticky;top:20px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}.side-note h2{font-size:16px;margin:0 0 10px}.side-note a{display:block;padding:6px 0;color:var(--muted)}.related{margin-top:42px;padding-top:28px;border-top:1px solid var(--line)}.related h2{font-size:20px}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related-links a{background:var(--panel);border:1px solid var(--line);padding:8px 11px;border-radius:8px}.flow{counter-reset:item}.flow .article-section{position:relative;padding-left:54px}.flow .article-section:before{counter-increment:item;content:counter(item,decimal-leading-zero);position:absolute;left:0;top:28px;color:var(--active);font-weight:800}.faq-list{display:grid;gap:14px;margin-top:30px}.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px}.faq-item h2{font-size:18px;margin:0 0 8px}.bottom-nav{display:none}.site-footer{border-top:1px solid var(--line);background:#0a080c;padding:40px 0 26px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.footer-grid h2{font-size:14px;margin:0 0 10px}.footer-grid a{display:block;color:var(--muted);font-size:13px;padding:3px 0}.footer-bottom{margin-top:28px;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:18px;color:var(--muted);font-size:13px}.mobile-only{display:none}
@media(max-width:900px){.all-menu{grid-template-columns:repeat(3,1fr)}.article-layout{grid-template-columns:1fr}.side-note{position:static}.feature-grid,.split,.split.reverse,.editorial-pair,.panels{grid-template-columns:1fr}.panels .wide{transform:none}}
@media(max-width:768px){body{padding-bottom:calc(56px + env(safe-area-inset-bottom))}.shell{width:min(100% - 32px,var(--max))}.brand-row{height:60px}.brand .logo{max-height:32px}.tools>a,.tools>.plain-btn{display:none}.mobile-only{display:inline-flex}.menu-btn{min-width:44px;min-height:44px}.main-nav{display:none}.quick-scroll{height:40px}.all-menu{grid-template-columns:repeat(2,1fr);gap:18px;display:none}.all-menu.open{display:grid}.page-main{padding-top:34px;padding-bottom:48px}.page-title,.hero h1{font-size:28px}.lead{font-size:16px}.section{padding:38px 0}.section h2,.section-head h2{font-size:22px}.content-img{max-height:180px}.banner-img{max-height:220px}.app-img{max-height:320px}.feature-grid{display:block}.feature{margin-bottom:12px}.article-section h2{font-size:21px}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-bottom{display:block}.bottom-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;height:calc(56px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#120f16;border-top:1px solid var(--line);z-index:20}.bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;line-height:1.2;min-width:0}.bottom-nav span{font-size:17px;margin-bottom:2px}.shelf>div{grid-template-columns:38px 1fr}.shelf>div>a{grid-column:2}.number-path a{display:grid}.search-row{align-items:stretch}.service-links{justify-content:flex-start}}
@media(max-width:340px){.shell{width:calc(100% - 28px)}.all-menu{grid-template-columns:1fr}.brand small{display:none}.tools{gap:4px}.shelf>div{grid-template-columns:30px 1fr}}