:root{--bg:#080808;--top:#050505;--panel:#121212;--card:#191919;--hover:#222;--red:#D71920;--red2:#F0343B;--deep:#8F1017;--text:#F5F5F5;--muted:#D9D9D9;--soft:#BDBDBD;--line:rgba(255,255,255,.13);--rline:rgba(215,25,32,.55);--shadow:0 14px 38px rgba(0,0,0,.38)}
*{box-sizing:border-box}html{background:var(--bg);color:var(--text)}body{margin:0;font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;background:var(--bg);color:var(--text);line-height:1.78;overflow-x:hidden}body.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(1220px,calc(100% - 32px));margin:auto}
.brand-strip{height:22px;background:var(--deep);font-size:12px;line-height:22px}.strip-inner,.strip-actions{display:flex;align-items:center;justify-content:space-between}.strip-actions{gap:16px}.strip-brand{font-weight:700}.text-button{border:0;background:none;color:#fff;padding:0;cursor:pointer}
.site-header{position:sticky;top:0;z-index:40;background:var(--top)}.nav-row{height:56px;display:flex;align-items:center;gap:24px;border-bottom:1px solid var(--red)}.brand{min-width:125px;font-size:21px;font-weight:800}.brand img{display:block;max-height:28px;max-width:150px;width:auto;height:auto;object-fit:contain}.main-nav{display:flex;height:100%;align-items:stretch;gap:8px;margin-right:auto}.main-nav a{display:flex;align-items:center;padding:0 13px;position:relative;white-space:nowrap}.main-nav a.is-active:after,.main-nav a:hover:after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:3px;background:var(--red2)}.nav-button{min-height:44px;padding:0 18px;border:1px solid var(--rline);background:#0d0d0d;color:#fff;border-radius:8px}.category-band{height:38px;background:#0b0b0b}.category-inner{height:100%;display:flex;align-items:center;gap:26px;font-size:14px;color:var(--muted)}.category-inner a:hover{color:var(--red2)}
.site-main{min-height:60vh}.page-shell{padding:34px 0 52px}.page-head{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;align-items:end;margin-bottom:28px}.eyebrow{color:var(--red2);font-size:13px;font-weight:700;letter-spacing:.1em}.page-head h1{font-size:30px;line-height:1.3;margin:6px 0 10px}.page-head p{margin:0;color:var(--muted)}.head-note{border-left:3px solid var(--red);padding:12px 16px;background:var(--panel);color:var(--soft);font-size:14px}
.content-grid{display:grid;grid-template-columns:minmax(0,760px) 320px;gap:36px;align-items:start}.article-stack{display:grid;gap:18px}.article-section{background:var(--panel);border:1px solid var(--line);border-radius:9px;padding:20px 22px}.article-section h2{font-size:22px;line-height:1.35;margin:0 0 10px}.article-section p{margin:0;font-size:16px}.article-section:hover{background:#151515}.side-box{position:sticky;top:132px;display:grid;gap:14px}.side-card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:18px}.side-card h2{font-size:18px;margin:0 0 8px}.side-card p{font-size:14px;color:var(--muted);margin:0 0 12px}.side-card a{display:inline-flex;min-height:44px;align-items:center;border-bottom:1px solid var(--red)}
.media-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,36%);gap:22px;align-items:center}.media-row img,.hero-media img,.app-media img{max-width:100%;height:auto;object-fit:contain;object-position:center;display:block;margin:auto}.media-row img{max-height:180px}.hero-media img{max-height:240px}.app-media img{max-height:420px}
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.68);opacity:0;pointer-events:none;transition:.2s;z-index:70}.overlay.show{opacity:1;pointer-events:auto}.drawer,.search-panel{position:fixed;top:0;right:0;height:100vh;background:#0d0d0d;z-index:80;transform:translateX(105%);transition:.22s;box-shadow:var(--shadow);overflow:auto}.drawer{width:min(390px,calc(100vw - 24px))}.search-panel{width:min(420px,calc(100vw - 24px));padding:18px}.drawer.open,.search-panel.open{transform:none}.drawer-head,.search-head{position:sticky;top:0;background:#0d0d0d;border-bottom:1px solid var(--line);padding:16px 18px;display:flex;justify-content:space-between;align-items:center}.drawer-head small{display:block;color:var(--soft);max-width:260px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.drawer-head button,.search-head button{width:44px;height:44px;border:1px solid var(--line);background:#161616;color:#fff;border-radius:8px;font-size:24px}.drawer-groups{padding:8px 18px 28px}.drawer-groups section{padding:14px 0;border-bottom:1px solid var(--line)}.drawer-groups h2{font-size:14px;color:var(--red2);margin:0 0 8px}.drawer-groups a{display:block;padding:9px 8px;border-radius:7px}.drawer-groups a:hover{background:var(--hover)}.drawer-groups b,.drawer-groups span{display:block}.drawer-groups span{font-size:12px;color:var(--soft)}.search-box{display:block;margin:18px 0}.search-box span{display:block;font-size:13px;color:var(--soft);margin-bottom:6px}.search-box input{width:100%;height:46px;background:#151515;border:1px solid var(--line);border-radius:8px;color:#fff;padding:0 12px}.search-results{display:grid;gap:8px}.search-results a{padding:11px 12px;background:var(--card);border:1px solid var(--line);border-radius:7px}.search-results b,.search-results span{display:block}.search-results span{font-size:12px;color:var(--soft)}.quick-links{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:18px}.quick-links a{min-height:44px;display:flex;align-items:center;justify-content:center;border:1px solid var(--rline);border-radius:7px}
.home-shell{padding:24px 0 54px}.tip-band{border-left:4px solid var(--red);background:#0e0e0e;padding:8px 12px;margin-bottom:18px}.hero{display:grid;grid-template-columns:7fr 5fr;gap:28px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:26px;align-items:center}.hero h1{font-size:32px;line-height:1.25;margin:0 0 12px}.hero p{color:var(--muted);margin:0 0 18px}.button-row{display:flex;flex-wrap:wrap;gap:10px}.btn{min-height:44px;padding:0 16px;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;background:var(--red)}.btn.secondary{background:transparent;border:1px solid var(--rline)}.home-section{margin-top:34px}.section-title{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:14px}.section-title h2{font-size:24px;margin:0}.section-title p{margin:0;color:var(--soft);font-size:14px}.split-65{display:grid;grid-template-columns:65fr 35fr;gap:22px}.index-list,.service-stack{display:grid;gap:10px}.index-item,.service-card,.feature-card,.rank-box,.method-card,.info-card{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:16px 18px}.index-item{border-left:3px solid var(--red)}.index-item b{display:block;margin-bottom:4px}.index-item p,.service-card p,.feature-card p,.method-card p,.info-card p{margin:0;color:var(--muted);font-size:14px}.tag{font-size:12px;color:var(--red2);margin-top:6px;display:inline-block}.service-card h3,.feature-card h3,.method-card h3,.info-card h3{margin:0 0 7px}.service-card a,.feature-card a{display:inline-flex;margin-top:10px;color:var(--red2)}.dual{display:grid;grid-template-columns:1fr 1fr;gap:22px}.path-line{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:12px 0}.path-line span{font-size:12px;text-align:center;padding:8px 5px;border:1px solid var(--line)}.rank-list{counter-reset:r;display:grid;gap:8px}.rank-list div{counter-increment:r;padding:9px 0;border-bottom:1px solid var(--line)}.rank-list div:before{content:counter(r,decimal-leading-zero);color:var(--red2);font-weight:800;margin-right:10px}.checklist{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.checklist article{border-top:3px solid var(--red);background:var(--panel);padding:18px}.checklist h3{margin:0 0 8px}.checklist p{margin:0;color:var(--muted);font-size:14px}.response-table{display:grid;gap:10px}.response-row{display:grid;grid-template-columns:180px 1fr 180px;border:1px solid var(--line);background:var(--panel)}.response-row>div{padding:12px;border-right:1px solid var(--line)}.response-row>div:last-child{border-right:0}.response-row b{display:block;font-size:13px;color:var(--red2)}.timeline{border-left:2px solid var(--red);margin-left:10px;padding-left:20px;display:grid;gap:16px}.timeline article{position:relative;background:var(--panel);padding:16px;border:1px solid var(--line);border-radius:8px}.timeline article:before{content:"";position:absolute;left:-27px;top:20px;width:10px;height:10px;border-radius:50%;background:var(--red2)}.timeline h3{margin:0 0 5px}.timeline p{margin:0;color:var(--muted);font-size:14px}.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.summary-grid article{background:var(--panel);border:1px solid var(--line);padding:16px}.summary-grid h3{color:var(--red2);margin:0 0 8px;font-size:16px}.summary-grid p{margin:0;color:var(--muted);font-size:14px}.methods{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.notice-dual{display:grid;grid-template-columns:1fr 1fr;gap:18px}.notice-box{border:1px solid var(--rline);padding:18px;border-radius:8px}.app-block{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:22px}.faq-list{display:grid;gap:10px}.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:18px}.faq-item h2{font-size:18px;margin:0 0 8px}.faq-item p{margin:0;color:var(--muted)}
.site-footer{background:#050505;border-top:2px solid var(--red);padding:34px 0 80px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}.footer-brand strong{font-size:22px}.footer-brand span{display:block;color:var(--soft);font-size:12px}.footer-brand p{color:var(--muted);max-width:460px}.footer-grid h2{font-size:15px;color:var(--red2);margin:0 0 8px}.footer-grid a{display:block;color:var(--muted);font-size:14px;padding:3px 0}.footer-bottom{border-top:1px solid var(--line);margin-top:24px;padding-top:16px;color:var(--soft);font-size:13px}.mobile-nav{display:none}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--red2);outline-offset:2px}
@media(max-width:980px){.main-nav{gap:0}.main-nav a{padding:0 9px}.content-grid,.page-head{grid-template-columns:1fr}.side-box{position:static;grid-template-columns:repeat(2,1fr)}.split-65{grid-template-columns:1fr}.footer-grid{grid-template-columns:2fr 1fr 1fr}}
@media(max-width:760px){body{padding-bottom:54px}.main-nav,.category-band{display:none}.nav-row{height:54px}.brand{margin-right:auto}.page-shell{padding:24px 0 36px}.page-head h1,.hero h1{font-size:28px}.content-grid{gap:22px}.article-section{padding:17px}.side-box,.hero,.dual,.checklist,.methods,.notice-dual,.app-block,.media-row{grid-template-columns:1fr}.hero{padding:20px}.hero-media{order:-1}.response-row{grid-template-columns:1fr}.response-row>div{border-right:0;border-bottom:1px solid var(--line)}.summary-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/3}.mobile-nav{position:fixed;left:0;right:0;bottom:0;height:calc(54px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#050505;border-top:1px solid var(--red);z-index:50;display:grid;grid-template-columns:repeat(5,1fr)}.mobile-nav a,.mobile-nav button{display:flex;align-items:center;justify-content:center;min-height:44px;color:#fff;background:none;border:0;font-size:13px}.panel-open .mobile-nav{pointer-events:none}.site-footer{padding-bottom:34px}}
@media(max-width:480px){.summary-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.button-row{display:grid}.btn{width:100%}}