: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);--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","PingFang SC",sans-serif;line-height:1.78;font-size:16px;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.shell{width:min(1220px,calc(100% - 32px));margin:0 auto}.site-header{position:relative;z-index:30}.brand-strip{height:22px;background:var(--deep);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:14px;align-items:center}.plain-btn{border:0;background:transparent;color:#fff;padding:0}.main-nav{height:56px;background:var(--top);border-bottom:1px solid var(--red)}.main-nav-inner{height:56px;display:flex;align-items:center;gap:24px}.site-brand{display:flex;align-items:center;gap:8px;min-width:160px;font-weight:800;letter-spacing:.04em}.site-brand small{font-size:10px;color:var(--soft)}.site-logo{height:28px;width:auto;max-width:150px;object-fit:contain}.main-links{display:flex;gap:8px;flex:1;justify-content:center}.main-links a,.category-links a{display:flex;align-items:center;min-height:44px;padding:0 12px;border-bottom:2px solid transparent;white-space:nowrap}.main-links a:hover,.category-links a:hover,.main-links a.is-active,.category-links a.is-active{color:#fff;border-color:var(--red2)}.nav-actions{display:flex;gap:8px;align-items:center}.nav-actions .plain-btn,.menu-btn{min-height:44px;padding:0 14px;border:1px solid var(--redline);background:#0d0d0d;color:#fff;border-radius:6px}.menu-btn{background:var(--red);border-color:var(--red)}.category-bar{height:38px;background:#0b0b0b;border-bottom:1px solid var(--line)}.category-links{height:38px;display:flex;align-items:center;justify-content:center;gap:12px}.category-links a{min-height:38px;font-size:14px}.overlay{position:fixed;inset:0;background:rgba(0,0,0,.72);opacity:0;pointer-events:none;transition:.2s;z-index:60}.overlay.show{opacity:1;pointer-events:auto}.drawer,.search-panel{position:fixed;right:0;top:0;height:100vh;background:#0d0d0d;box-shadow:var(--shadow);transform:translateX(105%);transition:.25s;z-index:70;border-left:1px solid var(--redline);overflow:auto}.drawer{width:min(400px,calc(100vw - 24px))}.search-panel{width:min(420px,calc(100vw - 24px))}.drawer.open,.search-panel.open{transform:none}.drawer-head,.search-head{position:sticky;top:0;background:#0a0a0a;border-bottom:1px solid var(--line);padding:16px;display:flex;justify-content:space-between;align-items:center;z-index:2}.drawer-head div{display:flex;flex-direction:column}.drawer-head span{font-size:12px;color:var(--soft);max-width:250px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.close-btn{min-height:44px;border:1px solid var(--redline);background:transparent;color:#fff;border-radius:6px;padding:0 13px}.drawer-body{padding:8px 16px 24px}.drawer-body section{padding:14px 0;border-bottom:1px solid var(--line)}.drawer-body h2{font-size:14px;color:var(--red2);margin:0 0 8px}.drawer-body a,.search-results a{display:flex;flex-direction:column;padding:10px;border-radius:8px}.drawer-body a:hover,.search-results a:hover{background:var(--hover)}.drawer-body a strong{font-size:15px}.drawer-body a span,.search-results a span{font-size:12px;color:var(--soft)}.search-box{display:block;padding:16px}.search-box span{display:block;font-size:13px;color:var(--soft);margin-bottom:6px}.search-box input{width:100%;background:#111;border:1px solid var(--redline);color:#fff;padding:12px 14px;border-radius:7px;outline:none}.search-box input:focus{border-color:var(--red2)}.search-results{padding:0 16px}.quick-links{padding:16px;display:grid;grid-template-columns:1fr 1fr;gap:8px}.quick-links a{padding:10px;background:var(--card);border:1px solid var(--line);border-radius:6px;text-align:center}.no-result{color:var(--soft);font-size:14px}.page-hero{padding:34px 0 26px;border-bottom:1px solid var(--line)}.eyebrow{color:var(--red2);font-size:13px;font-weight:700;letter-spacing:.08em}.page-hero h1{font-size:clamp(28px,4vw,32px);line-height:1.3;margin:6px 0 10px}.page-hero p{max-width:780px;color:var(--muted);margin:0}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;padding:30px 0 42px}.article{min-width:0}.sidebar{min-width:0}.section{margin-bottom:30px}.section h2{font-size:23px;line-height:1.35;margin:0 0 12px;padding-left:10px;border-left:3px solid var(--red)}.section h3{font-size:18px;line-height:1.4;margin:18px 0 8px}.section p{margin:0 0 14px;color:var(--text)}.section ul,.section ol{padding-left:20px}.section li{margin:7px 0}.card,.note,.sidebar-box{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:18px}.card:hover{background:var(--hover)}.note{border-color:var(--redline)}.sidebar-box{margin-bottom:16px}.sidebar-box h2{font-size:17px;margin:0 0 10px}.sidebar-box a{display:block;padding:8px 0;border-bottom:1px solid var(--line)}.sidebar-box a:last-child{border:0}.topic-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.topic-grid.three{grid-template-columns:repeat(3,1fr)}.list-rows{border-top:1px solid var(--line)}.list-row{display:grid;grid-template-columns:100px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}.tag{display:inline-flex;align-items:center;min-height:28px;padding:0 8px;border:1px solid var(--redline);border-radius:999px;color:#fff;font-size:12px}.timeline{border-left:2px solid var(--red);padding-left:20px;margin-left:6px}.timeline article{position:relative;margin:0 0 20px}.timeline article:before{content:"";position:absolute;width:10px;height:10px;border-radius:50%;background:var(--red2);left:-26px;top:8px}.timeline h3{margin:0 0 5px}.table-like{border:1px solid var(--line);border-radius:8px;overflow:hidden}.table-like div{display:grid;grid-template-columns:160px 1fr;padding:12px 14px;border-bottom:1px solid var(--line)}.table-like div:last-child{border:0}.table-like strong{color:var(--muted)}.visual-row{display:grid;grid-template-columns:38% 1fr;gap:20px;align-items:center}.visual-row img,.content-image{display:block;max-width:100%;height:auto;object-fit:contain;object-position:center;border-radius:8px}.banner-image{max-height:240px}.normal-image{max-height:180px}.app-image{max-height:420px}.home-hero{padding:18px 0 24px}.notice-strip{border-left:3px solid var(--red);background:#0f0f0f;padding:9px 12px;margin:18px 0}.home-focus{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:24px;min-height:250px}.home-focus h1{font-size:32px;line-height:1.25;margin:4px 0 10px}.home-focus p{color:var(--muted)}.button-row{display:flex;gap:10px;flex-wrap:wrap}.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 16px;border-radius:6px;border:1px solid var(--red);background:var(--red);color:#fff;font-weight:700}.btn.secondary{background:transparent;border-color:var(--redline)}.home-section{padding:28px 0;border-top:1px solid var(--line)}.home-section h2{font-size:23px;margin:0 0 14px}.split{display:grid;grid-template-columns:65fr 35fr;gap:18px}.dual{display:grid;grid-template-columns:1fr 1fr;gap:18px}.rank-list{counter-reset:r}.rank-list article{counter-increment:r;display:grid;grid-template-columns:40px 1fr;gap:10px;padding:12px 0;border-bottom:1px solid var(--line)}.rank-list article:before{content:counter(r,decimal-leading-zero);color:var(--red2);font-weight:800}.faq details{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin-bottom:10px}.faq summary{cursor:pointer;font-weight:700}.faq p{color:var(--muted)}.site-footer{border-top:2px solid var(--red);background:#050505;padding:28px 0 74px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}.footer-grid h2{font-size:15px;color:var(--red2);margin:0 0 8px}.footer-grid a{display:block;padding:3px 0;color:var(--muted)}.footer-brand strong{font-size:20px;display:block}.footer-brand span{font-size:12px;color:var(--soft)}.footer-brand p{font-size:14px;color:var(--soft)}.footer-bottom{border-top:1px solid var(--line);margin-top:20px;padding-top:14px;display:flex;justify-content:space-between;gap:20px;color:var(--soft);font-size:13px}.mobile-nav{display:none}.red-border{border:1px solid var(--redline);border-radius:8px;padding:18px}.compact-index{display:flex;flex-wrap:wrap;gap:8px}.compact-index a{padding:8px 10px;background:var(--card);border:1px solid var(--line);border-radius:6px}.kicker{color:var(--red2);font-size:13px;font-weight:700}.source-ladder{display:grid;gap:10px}.source-ladder article{display:grid;grid-template-columns:90px 1fr;gap:12px;padding:12px;background:var(--card);border-left:3px solid var(--red)}:focus-visible{outline:2px solid var(--red2);outline-offset:2px}@media(max-width:920px){.main-links{gap:0}.main-links a{padding:0 8px}.category-links{gap:2px}.content-layout{grid-template-columns:1fr}.sidebar{display:grid;grid-template-columns:1fr 1fr;gap:16px}.sidebar-box{margin:0}.home-focus{grid-template-columns:1fr}.split{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.topic-grid.three{grid-template-columns:1fr 1fr}}@media(max-width:720px){body{padding-bottom:54px}.shell{width:min(100% - 32px,1220px)}.brand-strip{height:22px}.brand-tools a{display:none}.main-nav,.main-nav-inner{height:56px}.main-links,.category-bar,.nav-actions .plain-btn{display:none}.main-nav-inner{justify-content:space-between}.site-brand{min-width:0}.page-hero{padding:24px 0 18px}.content-layout{padding:20px 0 30px}.topic-grid,.topic-grid.three,.dual,.visual-row{grid-template-columns:1fr}.home-focus{padding:18px;min-height:0}.home-focus h1{font-size:28px}.list-row{grid-template-columns:1fr;gap:4px}.table-like div{grid-template-columns:1fr;gap:5px}.sidebar{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:22px}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column}.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:40;display:grid;grid-template-columns:repeat(5,1fr)}.mobile-nav a,.mobile-nav button{min-height:54px;display:flex;align-items:center;justify-content:center;color:#fff;background:transparent;border:0;font-size:13px}.site-footer{padding-bottom:30px}}