/* mobile-first: base=mobile, min-width enhancements; generated by css_mobile_first.py + css_fix_revert.py */
.kb-wrap{ max-width:1200px; margin-top:0; margin-right:auto; margin-bottom:0; margin-left:auto; padding-top:0; padding-right:24px; padding-bottom:0; padding-left:24px; }
.kb-hero{ position:relative; overflow:hidden; background:linear-gradient(135deg,#0a0a0c,#151519 55%,#2a1112); color:#fff; padding-top:100px; padding-right:0; padding-bottom:56px; padding-left:0; text-align:center; }
.kb-hero-bg{ position:absolute; top:0; right:0; bottom:0; left:0; opacity:.28; background-image:linear-gradient(#ffffff12 1px,transparent 1px),linear-gradient(90deg,#ffffff12 1px,transparent 1px); background-size:44px 44px; -webkit-mask-image:radial-gradient(120% 92% at 50% 0,#000,transparent 74%); }
.kb-hero .kb-wrap{ position:relative; }
.kb-eyebrow{ display:inline-flex; align-items:center; gap:8px; text-transform:uppercase; letter-spacing:.14em; font-size:12.5px; font-weight:600; color:#c9c9d0; margin-top:0; margin-right:0; margin-bottom:16px; margin-left:0; }
.kb-dot{ width:8px; height:8px; border-radius:50%; background:#2ec26b; box-shadow:0 0 0 4px rgba(46,194,107,.18); }
.kb-h1{ font-size:clamp(32px,4.5vw,54px); line-height:1.06; font-weight:700; margin-top:0; margin-right:auto; margin-bottom:0; margin-left:auto; max-width:18ch; }
.kb-lead{ margin-top:18px; margin-right:auto; margin-bottom:28px; margin-left:auto; max-width:60ch; font-size:18px; color:rgba(255,255,255,.72); }
.kb-search{ display:flex; align-items:center; gap:8px; max-width:560px; margin-top:0; margin-right:auto; margin-bottom:0; margin-left:auto; background:#fff; border-radius:100px; padding-top:6px; padding-right:6px; padding-bottom:6px; padding-left:20px; }
.kb-search i{ color:#67676b; font-size:18px; }
.kb-search input{ flex:1; min-width:0; border:none; outline:none; font-size:16px; padding-top:10px; padding-right:4px; padding-bottom:10px; padding-left:4px; background:none; }
.kb-search button{ background:#1d1d1f; color:#fff; border:none; border-radius:100px; padding-top:11px; padding-right:24px; padding-bottom:11px; padding-left:24px; font-size:15px; font-weight:600; cursor:pointer; }
.kb-body{ padding-top:56px; padding-right:0; padding-bottom:90px; padding-left:0; background:#fff; }
.kb-layout{ display:grid; grid-template-columns:1fr; gap:40px; align-items:start; }
.kb-layout-wide{ grid-template-columns:minmax(0,1fr) 260px; }
.kb-layout-wide .dtc-main{ min-width:0; }
.kb-cats{ position:static; top:90px; }
.kb-cats h3{ font-size:13px; text-transform:uppercase; letter-spacing:.06em; color:#67676b; margin-top:0; margin-right:0; margin-bottom:12px; margin-left:0; }
.kb-cats a{ display:flex; justify-content:space-between; align-items:center; padding-top:9px; padding-right:12px; padding-bottom:9px; padding-left:12px; border-radius:9px; font-size:14px; color:var(--ink,#1d1d1f); text-decoration:none; }
.kb-cats a:hover{ background:#f5f5f7; }
.kb-cats a.on{ background:var(--brand-red,#c8102e); color:#fff; }
.kb-cats a span{ font-size:12px; opacity:.74; }
.kb-cats a.on span{ opacity:.9; }
.kb-result{ color:#6e6e73; margin-top:0; margin-right:0; margin-bottom:16px; margin-left:0; }
.kb-section{ scroll-margin-top:88px; margin-top:0; margin-right:0; margin-bottom:52px; margin-left:0; }
.kb-section:last-child{ margin-bottom:0; }
.kb-section-head{ display:flex; align-items:baseline; justify-content:space-between; gap:16px; margin-top:0; margin-right:0; margin-bottom:20px; margin-left:0; padding-bottom:12px; border-bottom:1px solid #ececef; }
.kb-section-head h2{ font-size:22px; font-weight:680; margin-top:0; margin-right:0; margin-bottom:0; margin-left:0; color:var(--ink,#1d1d1f); display:inline-flex; align-items:center; gap:9px; }
.kb-section-all{ flex-shrink:0; font-size:14px; font-weight:600; color:var(--brand-red,#c8102e) !important; text-decoration:none; white-space:nowrap; }
.kb-section-all:hover{ color:var(--brand-red,#c8102e); }
.kb-section-all i{ font-size:15px; vertical-align:-2px; }
.kb-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(272px,1fr)); gap:22px; }
.kb-card{ display:flex; flex-direction:column; border:1px solid #ececef; border-radius:16px; overflow:hidden; text-decoration:none; color:inherit; background:#fff; transition:transform .2s, box-shadow .2s, border-color .2s; }
.kb-card:hover{ transform:translateY(-4px); box-shadow:0 26px 54px -30px rgba(0,0,0,.4); border-color:#e2e2e6; }
.kb-card-media{ position:relative; aspect-ratio:16/10; overflow:hidden; display:flex; align-items:center; justify-content:center; background:linear-gradient(135deg, color-mix(in srgb, var(--cc,#c8102e) 26%, #16161c), #101015); }
.kb-ph{ font-size:44px; color:#fff; opacity:.32; }
.kb-card-media img{ position:absolute; top:0; right:0; bottom:0; left:0; width:100%; height:100%; object-fit:cover; display:block; transition:transform .4s ease; }
.kb-card:hover .kb-card-media img{ transform:scale(1.05); }
.kb-card-media::after{ content:""; position:absolute; top:0; right:0; bottom:0; left:0; background:linear-gradient(180deg, transparent 52%, rgba(0,0,0,.3)); pointer-events:none; }
.kb-card-cat{ position:absolute; left:12px; bottom:12px; z-index:2; display:inline-flex; align-items:center; gap:6px; background:rgba(255,255,255,.94); backdrop-filter:blur(6px); color:var(--cc,#c8102e); font-size:11px; font-weight:800; text-transform:uppercase; letter-spacing:.03em; padding-top:5px; padding-right:11px; padding-bottom:5px; padding-left:11px; border-radius:20px; box-shadow:0 3px 10px rgba(0,0,0,.2); }
.kb-card-cat i{ font-size:13px; }
.kb-card-body{ display:flex; flex-direction:column; flex:1; padding-top:16px; padding-right:18px; padding-bottom:18px; padding-left:18px; }
.kb-card h3{ font-size:16.5px; font-weight:700; line-height:1.32; margin-top:0; margin-right:0; margin-bottom:8px; margin-left:0; color:var(--ink,#1d1d1f); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.kb-card:hover h3{ color:var(--cc,#c8102e); }
.kb-card p{ font-size:13.5px; line-height:1.55; color:#6e6e73; margin-top:0; margin-right:0; margin-bottom:14px; margin-left:0; flex:1; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.kb-card-link{ font-size:13px; font-weight:700; color:var(--cc,#c8102e); display:inline-flex; align-items:center; gap:5px; margin-top:auto; }
.kb-card-link i{ font-size:14px; transition:transform .15s; }
.kb-card:hover .kb-card-link i{ transform:translateX(3px); }
.kb-pager{ margin-top:34px; }
.kb-pager .pagination{ list-style:none; display:flex; gap:6px; flex-wrap:wrap; padding-top:0; padding-right:0; padding-bottom:0; padding-left:0; margin-top:0; margin-right:0; margin-bottom:0; margin-left:0; justify-content:center; }
.kb-pager .pagination li{ list-style:none; margin-top:0; margin-right:0; margin-bottom:0; margin-left:0; }
.kb-pager .pagination li a, .kb-pager .pagination li span{ display:inline-flex; align-items:center; justify-content:center; min-width:40px; height:40px; padding-top:0; padding-right:12px; padding-bottom:0; padding-left:12px; border:1px solid rgba(0,0,0,.12); border-radius:10px; font-size:14px; text-decoration:none; color:var(--ink,#1d1d1f); background:#fff; transition:border-color .15s, color .15s; }
.kb-pager .pagination li a:hover{ border-color:var(--brand-red,#c8102e); color:var(--brand-red,#c8102e); }
.kb-pager .pagination li.active span{ background:var(--brand-red,#c8102e); color:#fff; border-color:var(--brand-red,#c8102e); }
.kb-pager .pagination li.disabled span{ color:#c7c7cc; background:#fafafb; }
.kb-article{ padding-top:110px; padding-right:0; padding-bottom:90px; padding-left:0; background:#fff; }
.kb-article .kb-wrap{ max-width:820px; }
.kb-article-rich{ padding-top:88px; }
.kb-article-rich .kb-wrap{ max-width:1560px; }
.kb-article-rich .kb-crumb{ margin-bottom:8px; }
.kb-article-rich .kb-article-frame{ min-height:600px; }
.kb-rich-layout{ display:flex; gap:30px; align-items:flex-start; }
.kb-rich-main{ flex:1 1 0; min-width:0; }
.kb-toc{ width:100%; flex-shrink:0; position:static; top:96px; align-self:flex-start; display:none !important; flex-direction:column; max-height:340px; border:1px solid rgba(0,0,0,.1); border-radius:14px; overflow:hidden; background:#fff; box-shadow:0 1px 3px rgba(0,0,0,.04); }
.kb-toc-hd{ display:flex; align-items:center; gap:9px; padding-top:15px; padding-right:18px; padding-bottom:15px; padding-left:18px; background:#16161a; color:#fff; font-size:12px; font-weight:700; letter-spacing:.07em; text-transform:uppercase; }
.kb-toc-hd i{ font-size:16px; }
.kb-toc-list{ list-style:none; margin-top:0; margin-right:0; margin-bottom:0; margin-left:0; padding-top:10px; padding-right:10px; padding-bottom:10px; padding-left:10px; overflow-y:auto; flex:1 1 auto; }
.kb-toc-list li{ margin-top:0; margin-right:0; margin-bottom:0; margin-left:0; }
.kb-toc-list a{ display:flex; align-items:center; gap:11px; padding-top:10px; padding-right:13px; padding-bottom:10px; padding-left:13px; border-radius:9px; font-size:14px; line-height:1.4; color:#4a4a4f; text-decoration:none; border-left:3px solid transparent; }
.kb-toc-list a:hover{ background:#f5f5f7; color:#16161a; }
.kb-toc-list a.on{ background:#fef2f2; color:var(--brand-red,#c8102e); border-left-color:var(--brand-red,#c8102e); font-weight:650; }
.kb-toc-num{ flex-shrink:0; width:23px; height:23px; border-radius:7px; background:#ececed; color:#666; font-size:12px; font-weight:700; display:inline-flex; align-items:center; justify-content:center; }
.kb-toc-list a.on .kb-toc-num{ background:var(--brand-red,#c8102e); color:#fff; }
.kb-toc-txt{ min-width:0; }
.kb-toc-prog{ padding-top:13px; padding-right:18px; padding-bottom:15px; padding-left:18px; border-top:1px solid rgba(0,0,0,.08); }
.kb-toc-prog-row{ display:flex; justify-content:space-between; font-size:11.5px; color:#67676b; margin-bottom:7px; font-weight:600; text-transform:uppercase; letter-spacing:.05em; }
.kb-toc-bar{ height:5px; background:#ececed; border-radius:3px; overflow:hidden; }
.kb-toc-fill{ height:100%; width:0; background:var(--brand-red,#c8102e); border-radius:3px; transition:width .12s linear; }
.kb-recent{ width:100%; flex-shrink:0; position:static; top:96px; }
.kb-recent > h3{ font-size:12px; text-transform:uppercase; letter-spacing:.07em; color:#67676b; margin-top:0; margin-right:0; margin-bottom:14px; margin-left:0; font-weight:700; }
.kb-recent-item{ display:flex; gap:12px; align-items:flex-start; padding-top:11px; padding-right:0; padding-bottom:11px; padding-left:0; border-bottom:1px solid rgba(0,0,0,.07); text-decoration:none; color:var(--ink,#1d1d1f); }
.kb-recent-thumb{ width:66px; height:48px; flex-shrink:0; border-radius:8px; overflow:hidden; background:#f0f0f3; }
.kb-recent-thumb img{ width:100%; height:100%; object-fit:cover; display:block; }
.kb-recent-title{ font-size:13px; line-height:1.4; font-weight:600; display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden; }
.kb-recent-item:hover .kb-recent-title{ color:var(--brand-red,#c8102e); }
.kb-recent-all{ display:inline-flex; align-items:center; gap:5px; margin-top:16px; font-size:13.5px; font-weight:600; color:#0067cc; text-decoration:none; }
.kb-crumb{ font-size:13px; color:#67676b; margin-bottom:18px; }
.kb-crumb a{ color:#0067cc; text-decoration:none; }
.kb-article-cat{ font-size:13px; font-weight:600; color:var(--brand-red,#c8102e); text-transform:uppercase; letter-spacing:.05em; margin-top:0; margin-right:0; margin-bottom:10px; margin-left:0; }
.kb-article-h1{ font-size:clamp(28px,4vw,44px); line-height:1.12; font-weight:700; margin-top:0; margin-right:0; margin-bottom:14px; margin-left:0; }
.kb-article-meta{ font-size:14px; color:#67676b; margin-top:0; margin-right:0; margin-bottom:30px; margin-left:0; display:flex; align-items:center; gap:6px; }
.kb-article-frame{ width:100%; border:0; display:block; min-height:300px; overflow:hidden; margin-top:0; margin-right:0; margin-bottom:10px; margin-left:0; }
.kb-article-body{ font-size:17px; line-height:1.75; color:#1d1d1f; }
.kb-article-body img{ max-width:100%; height:auto; border-radius:12px; margin-top:18px; margin-right:0; margin-bottom:18px; margin-left:0; }
.kb-article-body h2{ font-size:26px; font-weight:680; margin-top:36px; margin-right:0; margin-bottom:12px; margin-left:0; }
.kb-article-body h3{ font-size:21px; font-weight:650; margin-top:28px; margin-right:0; margin-bottom:10px; margin-left:0; }
.kb-article-body p{ margin-top:0; margin-right:0; margin-bottom:18px; margin-left:0; }
.kb-article-body a{ color:#0067cc; }
.kb-article-body ul,.kb-article-body ol{ margin-top:0; margin-right:0; margin-bottom:18px; margin-left:0; padding-left:24px; }
.kb-article-body li{ margin-top:0; margin-right:0; margin-bottom:9px; margin-left:0; }
.kb-article-body h2:first-child,.kb-article-body h3:first-child{ margin-top:0; }
.kb-article-body strong{ font-weight:650; }
.kb-article-body table{ width:100%; border-collapse:collapse; margin-top:0; margin-right:0; margin-bottom:22px; margin-left:0; font-size:15px; }
.kb-article-body th,.kb-article-body td{ border:1px solid #e2e2e6; padding-top:10px; padding-right:14px; padding-bottom:10px; padding-left:14px; text-align:left; vertical-align:top; }
.kb-article-body th{ background:#f5f5f7; font-weight:650; }
.kb-article-body blockquote{ margin-top:0; margin-right:0; margin-bottom:22px; margin-left:0; padding-top:14px; padding-right:20px; padding-bottom:14px; padding-left:20px; border-left:3px solid var(--brand-red,#c8102e); background:#faf7f7; border-radius:0 10px 10px 0; color:#3a3a3c; }
.kb-article-body .kb-lead-p{ font-size:19px; color:#3a3a3c; }
.kb-article-body .kb-note{ padding-top:16px; padding-right:20px; padding-bottom:16px; padding-left:20px; background:#f5f5f7; border-radius:12px; margin-top:0; margin-right:0; margin-bottom:22px; margin-left:0; font-size:15px; }
.kb-related{ margin-top:48px; margin-right:0; margin-bottom:30px; margin-left:0; padding-top:24px; padding-right:24px; padding-bottom:24px; padding-left:24px; background:#f5f5f7; border-radius:16px; }
.kb-related h3{ font-size:16px; margin-top:0; margin-right:0; margin-bottom:12px; margin-left:0; }
.kb-related ul{ margin-top:0; margin-right:0; margin-bottom:0; margin-left:0; padding-left:18px; }
.kb-related li{ margin-bottom:8px; }
.kb-related a{ color:#0067cc; text-decoration:none; }
.kb-article-cta{ display:flex; gap:14px; flex-wrap:wrap; margin-top:36px; }
.kb-btn{ display:inline-block; padding-top:13px; padding-right:26px; padding-bottom:13px; padding-left:26px; border-radius:11px; border:1px solid rgba(0,0,0,.18); font-weight:600; text-decoration:none; color:var(--ink,#1d1d1f); }
.kb-btn-red{ background:var(--brand-red,#c8102e); color:#fff; border-color:var(--brand-red,#c8102e); }
.kb-article-meta-row{ display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; margin-top:0; margin-right:0; margin-bottom:30px; margin-left:0; }
.kb-article-meta-row .kb-article-meta{ margin-top:0; margin-right:0; margin-bottom:0; margin-left:0; }
.kb-share{ display:inline-flex; align-items:center; gap:8px; }
.kb-share-label{ font-size:13px; color:#67676b; margin-right:2px; }
.kb-share-btn{ width:36px; height:36px; display:inline-flex; align-items:center; justify-content:center; border:1px solid rgba(0,0,0,.12); border-radius:50%; background:#fff; color:#1d1d1f; font-size:17px; cursor:pointer; text-decoration:none; transition:background .15s, color .15s, border-color .15s; }
.kb-share-btn:hover{ background:var(--brand-red,#c8102e); color:#fff; border-color:var(--brand-red,#c8102e); }
.kb-prevnext{ display:grid; grid-template-columns:1fr; gap:16px; margin-top:40px; margin-right:0; margin-bottom:0; margin-left:0; }
.kb-pn{ display:flex; align-items:center; gap:12px; padding-top:18px; padding-right:20px; padding-bottom:18px; padding-left:20px; border:1px solid rgba(0,0,0,.1); border-radius:14px; text-decoration:none; color:var(--ink,#1d1d1f); transition:border-color .15s, transform .15s; }
.kb-pn:hover{ border-color:var(--brand-red,#c8102e); transform:translateY(-2px); }
.kb-pn-next{ text-align:right; justify-content:flex-end; }
.kb-pn i{ font-size:20px; color:var(--brand-red,#c8102e); flex-shrink:0; }
.kb-pn span{ display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; flex-direction:column; gap:3px; min-width:0; font-size:14px; font-weight:600; line-height:1.3; }
.kb-pn em{ font-style:normal; font-size:11.5px; text-transform:uppercase; letter-spacing:.06em; color:#6e6e73; font-weight:600; display:block; }
.kb-codes{ margin-top:40px; margin-right:0; margin-bottom:0; margin-left:0; }
.kb-codes h3{ font-size:16px; margin-top:0; margin-right:0; margin-bottom:14px; margin-left:0; }
.kb-codes-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(132px,1fr)); gap:10px; }
.kb-code-card{ display:flex; align-items:center; justify-content:space-between; gap:8px; padding-top:12px; padding-right:14px; padding-bottom:12px; padding-left:14px; border:1px solid rgba(0,0,0,.1); border-radius:12px; text-decoration:none; background:#fff; transition:border-color .15s, transform .15s, box-shadow .15s; }
.kb-code-card:hover{ border-color:var(--brand-red,#c8102e); transform:translateY(-2px); box-shadow:0 6px 18px rgba(0,0,0,.06); }
.kb-code-tag{ font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace; font-weight:700; font-size:15px; letter-spacing:.02em; color:var(--ink,#1d1d1f); }
.kb-code-card i{ font-size:16px; color:var(--brand-red,#c8102e); }
.kb-helpful{ margin-top:36px; margin-right:0; margin-bottom:0; margin-left:0; padding-top:22px; padding-right:24px; padding-bottom:22px; padding-left:24px; background:#f5f5f7; border-radius:16px; text-align:center; }
.kb-helpful-q{ margin-top:0; margin-right:0; margin-bottom:14px; margin-left:0; font-size:15px; font-weight:600; color:var(--ink,#1d1d1f); }
.kb-helpful-btns{ display:inline-flex; gap:12px; }
.kb-helpful-btn{ display:inline-flex; align-items:center; gap:7px; padding-top:10px; padding-right:22px; padding-bottom:10px; padding-left:22px; border:1px solid rgba(0,0,0,.14); border-radius:11px; background:#fff; color:var(--ink,#1d1d1f); font-size:14px; font-weight:600; cursor:pointer; transition:border-color .15s, background .15s, color .15s, transform .15s; }
.kb-helpful-btn:hover:not(:disabled){ border-color:var(--brand-red,#c8102e); transform:translateY(-2px); }
.kb-helpful-btn:disabled{ cursor:default; opacity:.55; }
.kb-helpful-btn.chosen{ background:var(--brand-red,#c8102e); color:#fff; border-color:var(--brand-red,#c8102e); opacity:1; }
.kb-helpful-btn i{ font-size:17px; }
.kb-helpful-thanks{ margin-top:14px; margin-right:0; margin-bottom:0; margin-left:0; font-size:14px; color:#1a8f3c; font-weight:600; }
.kb-dtc{ background:#fff; padding-top:36px; padding-right:0; padding-bottom:0; padding-left:0; }
.kb-dtc-card{ display:grid; grid-template-columns:1fr; border:1px solid #ececef; border-radius:18px; overflow:hidden; background:linear-gradient(135deg,#12121a,#1c1220); color:#fff; }
.kb-dtc-info{ padding-top:26px; padding-right:30px; padding-bottom:26px; padding-left:30px; }
.kb-dtc-eyebrow{ display:inline-flex; align-items:center; gap:7px; font-size:11px; font-weight:700; letter-spacing:.1em; text-transform:uppercase; color:#ff7a90; margin-bottom:12px; }
.kb-dtc-info h2{ font-size:24px; font-weight:800; margin-top:0; margin-right:0; margin-bottom:6px; margin-left:0; letter-spacing:-.01em; }
.kb-dtc-info > p{ font-size:14px; color:#b6b6c2; margin-top:0; margin-right:0; margin-bottom:18px; margin-left:0; }
.kb-dtc-letters{ display:grid; grid-template-columns:repeat(2,1fr); gap:10px; margin-bottom:16px; }
.kb-dtc-let{ display:flex; flex-direction:column; align-items:flex-start; gap:1px; padding-top:11px; padding-right:13px; padding-bottom:11px; padding-left:13px; border:1px solid rgba(255,255,255,.14); border-radius:12px; text-decoration:none; color:#fff; background:rgba(255,255,255,.04); transition:.15s; }
.kb-dtc-let:hover{ border-color:#E8651A; background:rgba(232,101,26,.14); transform:translateY(-2px); }
.kb-dtc-let b{ font-family:ui-monospace,Consolas,monospace; font-size:20px; font-weight:800; line-height:1; }
.kb-dtc-let span{ font-size:11px; color:#a6a6b2; margin-top:3px; }
.kb-dtc-let em{ font-style:normal; font-size:12px; font-weight:700; color:#ff9db0; margin-top:3px; }
.kb-dtc-browse{ display:inline-flex; align-items:center; gap:6px; font-size:13.5px; font-weight:600; color:#fff; text-decoration:none; }
.kb-dtc-browse:hover{ color:#ff9db0; }
.kb-dtc-pop{ padding-top:26px; padding-right:28px; padding-bottom:26px; padding-left:28px; border-left:none; background:rgba(255,255,255,.02); }
.kb-dtc-pop-h{ font-size:11px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:#8a8a98; }
.kb-dtc-codes{ display:flex; flex-wrap:wrap; gap:8px; margin-top:14px; }
.kb-dtc-codes a{ font-family:ui-monospace,Consolas,monospace; font-size:13px; font-weight:700; color:#fff; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.12); padding-top:6px; padding-right:11px; padding-bottom:6px; padding-left:11px; border-radius:8px; text-decoration:none; transition:.15s; }
.kb-dtc-codes a:hover{ background:#E8651A; border-color:#E8651A; }
.kb-section-head h2 i{ color:var(--cc,#c8102e); font-size:20px; }
.kb-comments{ background:#fff; padding-top:0; padding-right:0; padding-bottom:90px; padding-left:0; }
.kb-comments-wrap{ max-width:820px; }
.kb-cm-h{ font-size:22px; font-weight:700; margin-top:0; margin-right:0; margin-bottom:20px; margin-left:0; display:flex; align-items:center; gap:9px; }
.kb-cm-h i{ color:var(--brand-red,#c8102e); }
.kb-cm-h span{ font-size:15px; color:#67676b; font-weight:600; }
.kb-cm-flash{ display:flex; align-items:center; gap:9px; padding-top:13px; padding-right:16px; padding-bottom:13px; padding-left:16px; border-radius:12px; font-size:14px; margin-top:0; margin-right:0; margin-bottom:20px; margin-left:0; }
.kb-cm-flash.ok{ background:#eefaf1; border:1px solid #bfe6cb; color:#1a6b39; }
.kb-cm-flash.err{ background:#fdeaea; border:1px solid #f5c6c6; color:#b3261e; }
.kb-cm-empty{ color:#67676b; font-size:14.5px; margin-top:0; margin-right:0; margin-bottom:26px; margin-left:0; }
.kb-cm-list{ list-style:none; margin-top:0; margin-right:0; margin-bottom:34px; margin-left:0; padding-top:0; padding-right:0; padding-bottom:0; padding-left:0; display:flex; flex-direction:column; gap:20px; }
.kb-cm{ display:flex; gap:14px; }
.kb-cm-av{ flex:none; width:42px; height:42px; border-radius:50%; background:linear-gradient(135deg,#c8102e,#8c0a1f); color:#fff; font-weight:700; font-size:17px; display:flex; align-items:center; justify-content:center; }
.kb-cm-body{ flex:1; min-width:0; }
.kb-cm-meta{ display:flex; align-items:baseline; gap:10px; margin-bottom:5px; }
.kb-cm-meta b{ font-size:14.5px; color:#1d1d1f; }
.kb-cm-meta span{ font-size:12px; color:#6e6e73; }
.kb-cm-body > p{ font-size:14.5px; line-height:1.6; color:#3a3a40; margin-top:0; margin-right:0; margin-bottom:0; margin-left:0; overflow-wrap:break-word; }
.kb-cm-reply{ margin-top:12px; margin-right:0; margin-bottom:0; margin-left:0; padding-top:12px; padding-right:16px; padding-bottom:12px; padding-left:16px; background:#faf7f7; border-left:3px solid var(--brand-red,#c8102e); border-radius:0 10px 10px 0; font-size:14px; line-height:1.6; color:#3a3a40; }
.kb-cm-reply strong{ display:inline-flex; align-items:center; gap:5px; color:var(--brand-red,#c8102e); font-weight:700; margin-right:6px; }
.kb-cm-formbox{ background:#f7f7f9; border:1px solid #ececef; border-radius:16px; padding-top:24px; padding-right:24px; padding-bottom:24px; padding-left:24px; }
.kb-cm-formbox h3{ font-size:18px; margin-top:0; margin-right:0; margin-bottom:6px; margin-left:0; }
.kb-cm-note{ font-size:12.5px; color:#67676b; margin-top:0; margin-right:0; margin-bottom:16px; margin-left:0; display:flex; align-items:center; gap:6px; }
.kb-cm-note i{ color:#1f9d55; }
.kb-cm-form .kb-cm-row{ display:grid; grid-template-columns:1fr; gap:12px; margin-bottom:12px; }
.kb-cm-form input,.kb-cm-form textarea{ width:100%; padding-top:12px; padding-right:14px; padding-bottom:12px; padding-left:14px; border:1px solid #e0e0e5; border-radius:10px; font:inherit; font-size:14px; background:#fff; box-sizing:border-box; }
.kb-cm-form input:focus,.kb-cm-form textarea:focus{ outline:none; border-color:var(--brand-red,#c8102e); box-shadow:0 0 0 3px rgba(200,16,46,.1); }
.kb-cm-form textarea{ resize:vertical; margin-bottom:14px; min-height:100px; }
.kb-cm-hp{ position:absolute !important; left:-9999px !important; width:1px !important; height:1px !important; opacity:0 !important; }
.kb-cm-form .kb-btn-red{ cursor:pointer; border:none; }
@media (max-width: 1024px) {
  .kb-rich-layout{ flex-direction:column; }
}
@media (max-width: 1100px) {
  .kb-toc{ margin-bottom:24px; }
}
@media (max-width: 820px) {
  .kb-dtc-pop{ border-top:1px solid rgba(255,255,255,.1); }
}
@media (min-width: 521px) {
  .kb-dtc-letters{ grid-template-columns:repeat(4,1fr); }
}
@media (min-width: 561px) {
  .kb-cm-form .kb-cm-row{ grid-template-columns:1fr 1fr; }
}
@media (min-width: 681px) {
  .kb-prevnext{ grid-template-columns:1fr 1fr; }
}
@media (min-width: 821px) {
  .kb-layout{ grid-template-columns:240px 1fr; }
  .kb-cats{ position:sticky; }
  .kb-toc{ display:flex !important; }
  .kb-dtc-card{ grid-template-columns:1.45fr 1fr; }
  .kb-dtc-pop{ border-left:1px solid rgba(255,255,255,.1); }
}
@media (min-width: 1025px) {
  .kb-recent{ width:264px; position:sticky; }
}
@media (min-width: 1101px) {
  .kb-toc{ width:300px; position:sticky; max-height:calc(100vh - 116px); }
}
/* ===== kbv2:Tech Center 列表改版(移动端优先) ===== */
.kbv2{padding:26px 0 60px}
.kbv2 .kb-wrap{max-width:1440px}
.kbv2-head{display:flex;flex-direction:column;gap:14px;margin:6px 0 16px}
.kbv2-title h1{font-size:26px;font-weight:800;margin:0 0 6px;color:var(--ink,#111)}
.kbv2-title p{margin:0;color:#6e6e73;font-size:13.5px}
.kbv2-search{display:flex;flex:1 1 auto;max-width:560px;border:1px solid #d9d9df;border-radius:999px;overflow:hidden;background:#fff}
.kbv2-search input{flex:1;border:0;outline:0;padding:11px 18px;font-size:14px;background:transparent}
.kbv2-search button{border:0;background:#f4f4f6;padding:0 20px;cursor:pointer;font-size:17px;color:#3c3c43;border-left:1px solid #e5e5ea}
.kbv2-search button:hover{background:#ececf0}
.kbv2-dtc{display:inline-flex;align-items:center;gap:8px;align-self:flex-start;border:1px solid #d9d9df;border-radius:999px;padding:10px 18px;font-size:13.5px;font-weight:650;color:var(--ink,#1d1d1f);text-decoration:none;background:#fff;transition:border-color .15s,background .15s}
.kbv2-dtc:hover{border-color:var(--brand-red,#c8102e);color:var(--brand-red,#c8102e)}
.kbv2-chips{display:flex;gap:8px;overflow-x:auto;padding:2px 0 12px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.kbv2-chips::-webkit-scrollbar{display:none}
.kbv2-chip{flex:0 0 auto;border:1px solid #e2e2e6;background:#f4f4f6;color:#3c3c43;border-radius:9px;padding:7px 14px;font-size:13px;font-weight:600;text-decoration:none;white-space:nowrap;transition:background .15s,color .15s}
.kbv2-chip em{font-style:normal;color:#86868b;font-weight:500;margin-left:3px}
.kbv2-chip:hover{background:#e8e8ec}
.kbv2-chip.active{background:#1d1d1f;border-color:#1d1d1f;color:#fff}
.kbv2-chip.active em{color:rgba(255,255,255,.6)}
.kbv2-grid{display:grid;grid-template-columns:1fr;gap:32px 20px;margin-top:10px}
.kbv2-card{display:block;text-decoration:none;color:inherit}
.kbv2-thumb{position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden}
.kbv2-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:2}
.kbv2-cover{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;z-index:1}
.kbv2-code{color:#fff;font-size:34px;font-weight:800;letter-spacing:.04em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.kbv2-code-sm{font-size:19px;letter-spacing:.02em;font-family:inherit;text-align:center;padding:0 16px}
.kbv2-covsub{color:rgba(255,255,255,.72);font-size:10.5px;letter-spacing:.22em;font-weight:600}
.kbv2-brand{position:absolute;left:12px;bottom:9px;color:rgba(255,255,255,.55);font-size:11.5px;font-weight:700}
.kbv2-badge{position:absolute;right:8px;bottom:8px;z-index:3;background:rgba(0,0,0,.78);color:#fff;font-size:11px;font-weight:600;border-radius:5px;padding:2px 7px}
.kbv2-badge.new{background:var(--brand-red,#c8102e)}
.kbv2-card:hover .kbv2-thumb{box-shadow:0 14px 34px -18px rgba(0,0,0,.45)}
.kbv2-meta{display:flex;gap:11px;margin-top:10px;align-items:flex-start}
.kbv2-avatar{flex:0 0 36px;width:36px;height:36px;border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:800;font-family:ui-monospace,Menlo,Consolas,monospace}
.kbv2-info{display:flex;flex-direction:column;min-width:0;gap:2px;flex:1 1 auto}
.kbv2-t{font-size:14.5px;font-weight:650;line-height:1.35;color:var(--ink,#111);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.kbv2-card:hover .kbv2-t{color:var(--brand-red,#c8102e)}
.kbv2-ch{font-size:12.5px;color:#6e6e73;display:flex;align-items:center;gap:4px}
.kbv2-ch i{color:#8e8e93;font-size:14px}
.kbv2-row2{font-size:12.5px;color:#86868b;display:flex;align-items:center;gap:7px}
.kbv2-sep{width:3px;height:3px;border-radius:50%;background:#c7c7cc;display:inline-block}
.kbv2-kebab{flex:0 0 30px;width:30px;height:30px;border:0;background:none;border-radius:50%;color:#6e6e73;font-size:17px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.kbv2-kebab:hover{background:#ececf0}
.kbv2-empty{text-align:center;color:#6e6e73;padding:60px 0;font-size:15px}
.kbv2-dd{position:absolute;z-index:9500;background:#fff;border:1px solid #e2e2e6;border-radius:12px;box-shadow:0 18px 44px -18px rgba(0,0,0,.3);padding:6px;min-width:180px}
.kbv2-dd button,.kbv2-dd a{display:flex;align-items:center;gap:9px;width:100%;border:0;background:none;text-align:left;padding:9px 12px;border-radius:8px;font-size:13.5px;color:#1d1d1f;cursor:pointer;text-decoration:none}
.kbv2-dd button:hover,.kbv2-dd a:hover{background:#f4f4f6}
.kbv2-toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);z-index:9600;background:#1d1d1f;color:#fff;font-size:13.5px;border-radius:10px;padding:11px 18px;box-shadow:0 14px 34px -12px rgba(0,0,0,.5)}
@media (min-width: 600px){
  .kbv2-grid{grid-template-columns:1fr 1fr}
}
@media (min-width: 768px){
  .kbv2-head{flex-direction:row;align-items:center;gap:20px}
  .kbv2-title{flex:0 0 auto;margin-right:auto}
  .kbv2-dtc{align-self:center}
}
@media (min-width: 960px){
  .kbv2-grid{grid-template-columns:repeat(3,1fr)}
  .kbv2-title h1{font-size:30px}
}
@media (min-width: 1280px){
  .kbv2-grid{grid-template-columns:repeat(4,1fr)}
  .kbv2{padding-top:34px}
}
.kbv2-grid > .kbv2-card{min-width:0}

/* ============ Tech Center 左侧工具栏 + 宽版布局 ============ */
.kbv2-page{display:flex;gap:24px;align-items:flex-start}
.kbv2-side{position:sticky;top:60px;flex:none;width:72px;display:flex;flex-direction:column;align-items:center;gap:2px;padding:4px;background:#fff;z-index:90;border-radius:14px}
.kbv2-side-item{width:64px;padding:12px 0;display:flex;flex-direction:column;align-items:center;gap:5px;border-radius:10px;font-size:10px;color:#3c3c43;text-decoration:none;transition:background .15s}
.kbv2-side-item i{font-size:20px}
.kbv2-side-item:hover{background:#f2f2f5}
.kbv2-side-item.active{background:#f0f0f4;font-weight:600;color:#1d1d1f}
.kbv2-main{flex:1;min-width:0}
.kbv2 .kb-wrap{max-width:1440px;padding-right:32px;padding-left:32px}
@media (max-width:900px){.kbv2-side{display:none}.kbv2-page{display:block}.kbv2 .kb-wrap{padding-right:16px;padding-left:16px}}