:root{--bg:#080808;--top:#050505;--panel:#121212;--card:#191919;--hover:#222;--red:#D71920;--red2:#F0343B;--darkred:#8F1017;--text:#F5F5F5;--muted:#BDBDBD;--line:rgba(255,255,255,.13);--redline:rgba(215,25,32,.55);--shadow:0 14px 38px rgba(0,0,0,.38)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(1220px,calc(100% - 32px));margin:auto}.skip-link{position:fixed;left:16px;top:-60px;background:#fff;color:#000;padding:10px 14px;z-index:999}.skip-link:focus{top:10px}.site-header{position:sticky;top:0;z-index:50;background:var(--top);box-shadow:0 8px 24px rgba(0,0,0,.25)}.brand-strip{height:22px;background:var(--darkred);font-size:12px}.brand-strip-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.brand-mini{font-weight:700}.brand-tools{display:flex;gap:16px;align-items:center}.text-button{border:0;background:none;color:#fff;padding:0;cursor:pointer}.main-nav{height:56px;border-bottom:1px solid var(--red)}.nav-inner{height:56px;display:flex;align-items:center;gap:26px}.brand-logo{display:flex;align-items:center;gap:8px;min-width:150px;font-weight:800}.brand-logo img{height:26px;width:auto;max-width:160px;object-fit:contain}.brand-logo span{font-size:20px}.brand-logo small{font-size:10px;color:#d9d9d9;letter-spacing:.08em}.primary-links{display:flex;gap:20px;align-items:stretch;height:100%;flex:1}.primary-links a{display:flex;align-items:center;position:relative;padding:0 4px;font-size:15px;white-space:nowrap}.primary-links a::after{content:"";position:absolute;left:6px;right:6px;bottom:0;height:3px;background:transparent}.primary-links a:hover,.primary-links a:focus-visible{color:var(--red2)}.primary-links a.is-active::after{background:var(--red)}.nav-actions{display:flex;gap:10px}.outline-button,.red-button{min-height:44px;padding:0 16px;border-radius:7px;cursor:pointer}.outline-button{border:1px solid var(--red);background:#0b0b0b;color:#fff}.red-button{border:1px solid var(--red);background:var(--red);color:#fff}.outline-button:hover,.red-button:hover{border-color:var(--red2)}.category-strip{height:38px;background:#0b0b0b;border-bottom:1px solid var(--line)}.category-inner{height:38px;display:flex;align-items:center;gap:28px;font-size:14px}.category-inner a:hover{color:var(--red2)}.site-main{min-height:60vh}.page-shell{width:min(1220px,calc(100% - 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24px))}.search-panel{width:min(420px,calc(100vw - 24px));padding:18px}.drawer.is-open,.search-panel.is-open{transform:none}.panel-open{overflow:hidden}.drawer-head,.search-head{position:sticky;top:0;z-index:2;background:#111;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:16px 18px}.drawer-head strong{display:block}.drawer-head small{display:block;color:#aaa;margin-top:2px}.close-button{width:44px;height:44px;border:1px solid var(--line);background:#171717;color:#fff;border-radius:6px;font-size:25px;cursor:pointer}.drawer-body{padding:10px 18px 28px}.drawer-body section{margin:12px 0 20px}.drawer-body h2,.quick-links h2{font-size:14px;color:var(--red2);margin:0 0 7px;text-transform:uppercase}.drawer-body a{display:block;padding:10px 0;border-top:1px solid var(--line)}.drawer-body b{display:block;font-size:15px}.drawer-body span{display:block;color:#aaa;font-size:13px;margin-top:2px}.search-head{padding:0 0 12px}.search-head label{font-size:18px;font-weight:700}.search-panel input{width:100%;height:46px;background:#080808;border:1px solid var(--line);color:#fff;padding:0 12px;border-radius:7px;outline:none}.search-panel input:focus{border-color:var(--red2)}.search-results{margin-top:14px}.search-results a{display:block;background:var(--card);padding:12px;margin-bottom:8px;border-left:2px solid transparent}.search-results a:hover{border-left-color:var(--red)}.search-results b,.search-results span{display:block}.search-results span{font-size:13px;color:#aaa}.no-result{color:#aaa}.quick-links{margin-top:22px;border-top:1px solid var(--line);padding-top:16px}.quick-links a{display:inline-block;margin:0 6px 8px 0;padding:8px 10px;border:1px solid var(--line);border-radius:6px}.mobile-bottom{display:none}.home-shell{width:min(1220px,calc(100% - 32px));margin:24px auto 54px}.notice-strip{border-left:3px solid var(--red);background:#101010;padding:8px 12px;margin-bottom:18px;font-size:14px}.focus-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:center;background:var(--panel);padding:24px;border:1px solid var(--line)}.focus-copy h1{font-size:32px;line-height:1.28;margin:6px 0 12px}.focus-copy p{color:#d9d9d9}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.button-link{display:inline-flex;min-height:44px;align-items:center;padding:0 16px;border-radius:7px}.button-link.primary{background:var(--red)}.button-link.secondary{border:1px solid var(--red)}.focus-media{display:flex;justify-content:center}.focus-media img{max-width:100%;height:auto;max-height:240px;object-fit:contain}.home-section{margin-top:34px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:14px}.section-heading h2{font-size:24px;margin:0}.section-heading p{margin:0;color:#aaa;font-size:14px}.index-grid{display:grid;grid-template-columns:65fr 35fr;gap:20px}.index-list{background:var(--panel);padding:18px}.index-item{display:grid;grid-template-columns:auto 1fr;gap:12px;padding:12px 0;border-top:1px solid var(--line)}.index-item:first-child{border-top:0;padding-top:0}.badge{align-self:start;background:#28080a;color:#fff;border:1px solid var(--redline);padding:3px 7px;border-radius:999px;font-size:12px}.index-item h3{font-size:18px;margin:0 0 4px}.index-item p{margin:0;color:#cfcfcf}.stack-cards{display:grid;gap:12px}.mini-card{background:var(--card);border:1px solid var(--line);padding:18px}.mini-card h3{margin:0 0 6px;font-size:18px}.mini-card p{margin:0;color:#c7c7c7}.dual-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.feature-card{background:var(--panel);border-top:2px solid var(--red);padding:20px}.feature-card h3{margin:0 0 7px;font-size:20px}.feature-card p{color:#d1d1d1}.rank-list{counter-reset:item}.rank-list div{counter-increment:item;display:flex;gap:10px;padding:10px 0;border-top:1px solid var(--line)}.rank-list div:before{content:counter(item,decimal-leading-zero);color:var(--red2);font-weight:700}.timeline{border-left:2px solid var(--red);margin-left:8px}.timeline div{position:relative;padding:0 0 20px 22px}.timeline div:before{content:"";position:absolute;left:-7px;top:7px;width:12px;height:12px;border-radius:50%;background:var(--red)}.timeline h3{margin:0 0 4px}.timeline p{margin:0;color:#cfcfcf}.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.method-grid .mini-card{border-top:2px solid var(--red)}.faq-list details{background:var(--card);border:1px solid var(--line);padding:14px 16px;margin:10px 0}.faq-list summary{cursor:pointer;font-weight:700}.faq-list p{color:#d9d9d9}.media-row{display:grid;grid-template-columns:35% 1fr;gap:20px;align-items:center}.media-row img{max-width:100%;height:auto;max-height:180px;object-fit:contain}.app-row{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:center}.app-row img{max-width:100%;height:auto;max-height:420px;object-fit:contain}.outline-panel{border:1px solid var(--redline);padding:18px;background:#0f0f0f}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--red2);outline-offset:3px}@media(max-width:960px){.primary-links{gap:10px}.primary-links a{font-size:14px}.nav-inner{gap:14px}.content-layout{grid-template-columns:1fr}.sidebox{position:static}.footer-grid{grid-template-columns:repeat(3,1fr)}.footer-brand{grid-column:1/-1}.focus-grid{grid-template-columns:1.2fr .8fr}.method-grid{grid-template-columns:1fr 1fr}}@media(max-width:760px){.brand-strip{display:none}.site-header{position:sticky}.main-nav,.nav-inner{height:58px}.primary-links,.category-strip,.nav-actions .outline-button{display:none}.nav-inner{justify-content:space-between}.page-shell,.home-shell{width:min(100% - 32px,1220px);margin-top:20px}.page-hero,.focus-grid,.index-grid,.dual-grid,.app-row,.media-row{grid-template-columns:1fr}.page-hero{padding:18px}.page-hero h1,.focus-copy h1{font-size:28px}.content-layout{margin-top:22px}.method-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-brand{grid-column:1/-1}.footer-bottom{padding-bottom:78px;display:block}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;height:calc(54px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:#050505;border-top:1px solid var(--red);z-index:60}.mobile-bottom a,.mobile-bottom button{display:flex;align-items:center;justify-content:center;color:#fff;background:none;border:0;font-size:13px;min-height:44px}.panel-open .mobile-bottom{z-index:50;pointer-events:none}.section-heading{display:block}.section-heading p{margin-top:4px}.focus-media img{max-height:190px}.app-row img{max-height:320px}.hero-image img{max-height:180px}}