:root{--bg:#0D0B10;--panel:#17131D;--panel2:#211A29;--line:#382A3D;--red:#E62B46;--purple:#7650A4;--title:#fff;--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:1.8}a{color:inherit;text-decoration:none}a:hover{color:var(--active)}button,input{font:inherit}.shell{width:min(var(--max),calc(100% - 48px));margin:auto}.skip{position:absolute;left:-9999px;top:8px;background:#fff;color:#111;padding:8px 12px;z-index:30}.skip:focus{left:8px}.site-header{background:#100d13;border-bottom:1px solid var(--line)}.brand-row{height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px}.brand-logo{max-height:36px;width:auto}.brand span{display:flex;align-items:baseline;gap:8px}.brand strong{font-size:18px}.brand small{font-size:12px;color:var(--muted);letter-spacing:.12em}.tools{display:flex;gap:8px;align-items:center}.tools a,.tools button,.panel button{border:1px solid var(--line);background:transparent;color:#fff;border-radius:9px;min-height:44px;padding:8px 12px;cursor:pointer}.tools a:focus,.tools button:focus,.panel button:focus,input:focus{outline:2px solid var(--active);outline-offset:2px}.main-nav{border-top:1px solid #241b29;border-bottom:1px solid #241b29}.nav-scroll{display:flex;align-items:center;gap:28px;height:48px}.main-nav a{height:48px;display:flex;align-items:center;position:relative;color:var(--muted);font-size:15px}.main-nav .active{color:#fff;font-weight:700}.main-nav .active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--red);border-radius:3px}.quick-nav{background:#151019}.quick-scroll{display:flex;gap:18px;align-items:center;min-height:42px;overflow-x:auto;white-space:nowrap}.quick-nav a{font-size:14px;color:var(--muted)}.panel{padding:20px 0 24px}.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.panel input{width:100%;background:var(--panel);border:1px solid var(--line);color:#fff;border-radius:10px;padding:12px}.search-results{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.search-results a{padding:6px 10px;border:1px solid var(--line);border-radius:8px;background:var(--panel2)}.menu-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.menu-groups section{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:15px}.menu-groups h2{font-size:15px;margin:0 0 8px}.menu-links{display:grid;grid-template-columns:1fr 1fr;gap:6px}.menu-links a{font-size:14px;color:var(--muted)}.noscript{display:flex;flex-wrap:wrap;gap:12px;padding:12px 0}.hero,.page-head{padding:56px 0 38px}.eyebrow{color:var(--active);font-size:13px;font-weight:800;letter-spacing:.08em}.hero h1,.page-head h1{font-size:clamp(28px,4vw,34px);line-height:1.25;margin:8px 0 16px}.lead{max-width:780px;color:var(--muted);font-size:17px}.breadcrumbs{font-size:13px;color:#bcaec3;margin-bottom:10px}.section{padding:48px 0}.section.compact{padding:32px 0}.section h2{font-size:24px;line-height:1.35;margin:0 0 16px}.section h3{font-size:19px;line-height:1.45;margin:0 0 8px}.grid-2{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card,.feature{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px}.feature-wide{grid-column:span 2}.card-number{font-size:12px;color:var(--active);font-weight:800;letter-spacing:.08em}.article{max-width:780px}.article p{margin:0 0 1.1em}.article blockquote{margin:24px 0;padding:14px 18px;border-left:3px solid var(--red);background:var(--panel)}.aside-note{border-left:2px solid var(--purple);padding-left:16px;color:var(--muted);font-size:14px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.button{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:8px 15px;border:1px solid var(--line);border-radius:9px;background:var(--panel2)}.button.primary{background:var(--red);border-color:var(--red);font-weight:700}.media-box{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:12px;text-align:center}.content-image{display:block;max-width:100%;height:auto;max-height:220px;object-fit:contain;object-position:center;margin:auto}.banner-image{display:block;max-width:100%;height:auto;max-height:300px;object-fit:contain;margin:auto}.portrait-image{display:block;max-width:100%;height:auto;max-height:360px;object-fit:contain;margin:auto}.app-image{display:block;max-width:100%;height:auto;max-height:400px;object-fit:contain;margin:auto}.icon-image{display:block;max-width:72px;max-height:72px;width:auto;height:auto;object-fit:contain}.index-list{border-top:1px solid var(--line)}.index-row{display:grid;grid-template-columns:56px 1fr auto;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);align-items:start}.num{color:var(--active);font-weight:800}.tag{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:3px 8px;font-size:12px;color:var(--muted)}.timeline{border-left:2px solid var(--line);margin-left:8px;padding-left:24px;display:grid;gap:20px}.timeline .step{position:relative}.timeline .step:before{content:"";position:absolute;left:-32px;top:.55em;width:12px;height:12px;border-radius:50%;background:var(--red)}.table-wrap{overflow-x:auto}.info-table{width:100%;border-collapse:collapse;background:var(--panel)}.info-table th,.info-table td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}.info-table th{background:var(--panel2)}.qa{display:grid;gap:14px}.qa article{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}.qa h2,.qa h3{font-size:18px;margin:0 0 7px}.related{border-top:1px solid var(--line);margin-top:34px;padding-top:22px}.related-links{display:flex;flex-wrap:wrap;gap:9px}.related-links a{border:1px solid var(--line);border-radius:8px;padding:7px 10px;color:var(--muted)}.site-footer{margin-top:48px;border-top:1px solid var(--line);background:#100d13;padding:42px 0 26px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.footer-grid section{display:flex;flex-direction:column;gap:6px}.footer-grid h2{font-size:15px;margin:0 0 6px}.footer-grid a{font-size:14px;color:var(--muted)}.footer-bottom{border-top:1px solid var(--line);margin-top:24px;padding-top:18px;color:#bfb2c5;font-size:13px}.mobile{display:none}
@media(max-width:900px){.menu-groups{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:1fr 1fr}.grid-4{grid-template-columns:1fr 1fr}.grid-2{grid-template-columns:1fr}.feature-wide{grid-column:span 1}}
@media(max-width:768px){body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}.shell{width:calc(100% - 32px)}.brand-row{height:60px}.brand-logo{max-height:32px}.brand small,.desktop{display:none}.mobile{display:flex}.main-nav{display:none}.quick-scroll{min-height:44px}.hero,.page-head{padding:38px 0 28px}.lead{font-size:16px}.section{padding:36px 0}.section h2{font-size:21px}.card,.feature{padding:17px}.grid-3,.grid-4{grid-template-columns:1fr}.menu-groups{grid-template-columns:1fr 1fr}.menu-links{grid-template-columns:1fr}.content-image{max-height:180px}.banner-image{max-height:220px}.portrait-image{max-height:320px}.app-image{max-height:320px}.footer-grid{grid-template-columns:1fr 1fr}.index-row{grid-template-columns:44px 1fr}.index-row>a{grid-column:2}.bottom-nav{position:fixed;z-index:20;left:0;right:0;bottom:0;height:calc(56px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#140f18;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr)}.bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:15px;line-height:1.1}.bottom-nav span{font-size:11px;margin-top:3px}}
@media(max-width:360px){.shell{width:calc(100% - 28px)}.menu-groups{grid-template-columns:1fr}.brand strong{font-size:16px}.tools{gap:4px}.tools button{font-size:13px;padding:7px}.footer-grid{grid-template-columns:1fr}.index-row{grid-template-columns:38px 1fr}}

.label-mobile{display:none}@media(max-width:768px){.label-desktop{display:none}.label-mobile{display:inline}}