/* CCBots · 共享设计系统 (index / capabilities / pricing) */
:root{
  --ink:#0b1220; --ink-2:#1e293b; --soft:#475569; --faint:#64748b;
  --line:#e6eaf0; --bg:#ffffff; --bg-alt:#f6f8fc; --bg-deep:#0b1220;
  --indigo:#4f46e5; --indigo-2:#6366f1; --cyan:#22d3ee; --emerald:#059669;
  --amber:#f59e0b; --rose:#e11d48;
  --r:16px; --r-sm:10px;
  --shadow:0 1px 2px rgba(15,23,42,.04),0 12px 32px -12px rgba(15,23,42,.12);
  --shadow-lg:0 24px 60px -20px rgba(15,23,42,.28);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"SF Mono","JetBrains Mono",Menlo,Consolas,"Courier New",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;font-size:16.5px;overflow-x:hidden}

.en{display:none}
html[data-lang="en"] .zh{display:none}
html[data-lang="en"] .en{display:revert}

.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
section{padding:84px 0}
.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--indigo);font-weight:600;margin-bottom:14px}
h1,h2,h3{line-height:1.18;letter-spacing:-.01em;font-weight:760;text-wrap:pretty}
h2{font-size:clamp(26px,3.6vw,40px);margin-bottom:18px}
h3{font-size:20px;margin-bottom:10px}
.lead{font-size:clamp(16px,1.6vw,19px);color:var(--soft);max-width:760px}
a{color:inherit}

/* NAV */
nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.02em;text-decoration:none;color:var(--ink);flex:0 0 auto}
.brand .dot{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--indigo),var(--cyan));display:grid;place-items:center;color:#fff;font-family:var(--mono);font-size:12px;font-weight:800}
.nav-left{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-links{display:flex;gap:22px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{font-size:14.5px;color:var(--soft);text-decoration:none;font-weight:500;white-space:nowrap}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active{color:var(--indigo);font-weight:700}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;font-family:var(--mono);font-size:12.5px;font-weight:700}
.lang button{border:0;background:transparent;padding:7px 13px;cursor:pointer;color:var(--faint)}
.lang button.on{background:var(--ink);color:#fff}
.dd{position:relative;display:inline-block}
.dd-top{display:inline-flex;align-items:center;gap:5px;cursor:pointer}
.dd-top .car{font-size:10px;opacity:.7;transition:.2s}
.dd:hover .dd-top .car{transform:rotate(180deg)}
.dd-menu{position:absolute;top:100%;left:0;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);padding:8px;min-width:178px;display:none;flex-direction:column;gap:2px;z-index:60}
.dd:hover .dd-menu,.dd:focus-within .dd-menu{display:flex}
.dd-menu a{padding:9px 13px;border-radius:8px;font-size:14px;color:var(--soft);white-space:nowrap;font-weight:500}
.dd-menu a:hover{background:var(--bg-alt);color:var(--ink)}
@media(max-width:880px){.nav-links a:not(.cta-mini),.dd{display:none}}

/* HERO */
.hero{background:radial-gradient(1100px 520px at 78% -10%,rgba(99,102,241,.30),transparent 60%),radial-gradient(900px 480px at 8% 8%,rgba(34,211,238,.16),transparent 55%),linear-gradient(180deg,#0b1220,#0e1730);color:#e9eefb;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:46px 46px;mask:radial-gradient(700px 420px at 70% 0,#000,transparent 75%)}
.hero .wrap{position:relative;padding:92px 24px 100px}
.tag{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;color:#a5b4fc;border:1px solid rgba(165,180,252,.34);background:rgba(99,102,241,.12);padding:6px 13px;border-radius:999px;margin-bottom:24px}
.tag .pulse{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 0 rgba(34,211,238,.6);animation:p 2s infinite}
@keyframes p{0%{box-shadow:0 0 0 0 rgba(34,211,238,.55)}70%{box-shadow:0 0 0 9px rgba(34,211,238,0)}100%{box-shadow:0 0 0 0 rgba(34,211,238,0)}}
.hero h1{font-size:clamp(31px,5.2vw,57px);color:#fff;max-width:26ch;margin-bottom:22px}
.hero h1 .hl{background:linear-gradient(120deg,var(--cyan),#a5b4fc);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{color:#b6c2e0;max-width:660px;font-size:clamp(16px,1.7vw,20px)}
.btns{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15.5px;padding:14px 24px;border-radius:12px;text-decoration:none;cursor:pointer;border:1px solid transparent;transition:.18s}
.btn-primary{background:linear-gradient(135deg,var(--indigo),var(--indigo-2));color:#fff;box-shadow:0 12px 30px -10px rgba(79,70,229,.7)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.06);color:#e9eefb;border-color:rgba(255,255,255,.22)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.hero-stats{display:flex;gap:38px;margin-top:52px;flex-wrap:wrap}
.hero-stats .s{min-width:120px}
.hero-stats .n{font-size:29px;font-weight:800;color:#fff;font-family:var(--mono);letter-spacing:-.02em}
.hero-stats .l{font-size:13px;color:#92a1c4;margin-top:4px}
.engines{display:flex;gap:10px;flex-wrap:wrap;margin-top:40px;align-items:center}
.engines .lbl{font-size:12.5px;color:#7e8db1;font-family:var(--mono);margin-right:4px}
.chip{font-size:13px;color:#cdd7f0;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);padding:6px 13px;border-radius:999px;font-weight:600}

/* subpage compact hero */
.subhero{background:linear-gradient(180deg,#0b1220,#101a35);color:#e9eefb}
.subhero .wrap{padding:64px 24px 56px}
.subhero h1{font-size:clamp(27px,4vw,42px);color:#fff;margin-bottom:14px;max-width:none}
.subhero .lead{color:#b6c2e0}
.crumb{font-size:13.5px;color:#8a99bd;margin-bottom:18px;font-family:var(--mono)}
.crumb a{color:#a5b4fc;text-decoration:none}

.alt{background:var(--bg-alt)}
.head{max-width:780px;margin-bottom:44px}
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
@media(max-width:860px){.g3,.g2{grid-template-columns:1fr}}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#d6deec}
.card .ic{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;font-size:21px;margin-bottom:16px;background:linear-gradient(135deg,#eef2ff,#e0f2fe)}
.card p{color:var(--soft);font-size:15px}
.pain .ic{background:linear-gradient(135deg,#fff1f2,#ffe4e6)}
.muted{color:var(--faint);font-size:14px}

/* focus list (numbered big) */
.focus{display:grid;gap:16px}
.focus .row{display:flex;gap:20px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px 26px;box-shadow:var(--shadow);transition:.2s}
.focus .row:hover{border-color:#cdd6ea;transform:translateX(3px)}
.focus .no{flex:0 0 auto;width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--indigo),var(--indigo-2));color:#fff;font-family:var(--mono);font-weight:800;display:grid;place-items:center;font-size:18px}
.focus h3{margin-bottom:5px}
.focus p{color:var(--soft);font-size:15px}
.focus .tagk{display:inline-block;font-family:var(--mono);font-size:11px;font-weight:700;color:var(--indigo);background:#eef2ff;padding:2px 9px;border-radius:6px;margin-left:8px;vertical-align:middle}
.focus .soon{color:var(--amber);background:#fef3c7}

/* mod numbered */
.mod{display:flex;gap:18px;align-items:flex-start}
.mod .no{flex:0 0 auto;width:40px;height:40px;border-radius:11px;background:var(--ink);color:#fff;font-family:var(--mono);font-weight:800;display:grid;place-items:center;font-size:16px}
.mod h3{margin-bottom:6px}
.mod p{color:var(--soft);font-size:15px}

/* gain / goal banner */
.goal{background:linear-gradient(135deg,#0b1220,#15213f);color:#dbe4fb;border-radius:var(--r);padding:42px;box-shadow:var(--shadow-lg)}
.goal h2{color:#fff}
.goal .lead{color:#aab8dc}
.goal .arrowline{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:26px;font-weight:700}
.goal .pill{padding:11px 18px;border-radius:12px;font-size:15px}
.goal .from{background:rgba(255,255,255,.07);color:#c6d2f0;border:1px solid rgba(255,255,255,.14)}
.goal .to{background:linear-gradient(135deg,var(--cyan),#818cf8);color:#06121f;font-weight:800}
.goal .ar{color:var(--cyan);font-size:24px;font-family:var(--mono)}

/* closed loop */
.loop{display:flex;align-items:stretch;gap:0;margin-top:14px;flex-wrap:wrap;justify-content:center}
.loop .node{flex:1;min-width:190px;background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:20px;text-align:center;box-shadow:var(--shadow)}
.loop .node .k{font-family:var(--mono);font-size:12px;color:var(--indigo);font-weight:700}
.loop .node h3{font-size:16.5px;margin:8px 0 6px}
.loop .node p{font-size:13.5px;color:var(--soft)}
.loop .arr{display:grid;place-items:center;color:var(--indigo-2);font-size:24px;padding:0 6px}
@media(max-width:860px){.loop .arr{transform:rotate(90deg);padding:6px 0}}

/* tables */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);background:#fff}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:14.7px}
th,td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--bg-alt);font-weight:700;color:var(--ink);position:sticky;top:0}
tbody tr:last-child td{border-bottom:0}
td.dim{color:var(--faint)}
th.cn,td.cn{color:var(--soft)}
th.intl{color:var(--indigo)}
td.intl{color:var(--ink-2);background:rgba(99,102,241,.045);font-weight:500}
.rowlabel{font-weight:700;color:var(--ink);background:#fbfcfe;white-space:nowrap}
code{font-family:var(--mono);font-size:.92em;background:#eef2f8;padding:2px 6px;border-radius:5px;color:#3730a3}
.tagmini{display:inline-block;font-family:var(--mono);font-size:11px;font-weight:700;padding:2px 8px;border-radius:6px;margin-right:6px}
.t-cn{background:#fef3c7;color:#92400e}
.t-intl{background:#e0e7ff;color:#3730a3}

/* before/after */
.ba{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:860px){.ba{grid-template-columns:1fr}}
.ba .col{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.ba .col .top{padding:16px 22px;font-weight:800;display:flex;align-items:center;justify-content:space-between}
.ba .before .top{background:#fff7ed;color:#9a3412;border-bottom:1px solid #fed7aa}
.ba .after .top{background:linear-gradient(135deg,#4f46e5,#6366f1);color:#fff}
.ba ul{list-style:none;padding:8px 22px 22px}
.ba li{padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.6px;color:var(--soft);display:flex;gap:10px}
.ba li:last-child{border-bottom:0}
.ba li b{color:var(--ink)}
.ba .mk{flex:0 0 auto;font-family:var(--mono);font-weight:800}
.ba .before .mk{color:#c2410c}
.ba .after .mk{color:var(--emerald)}
.ver{font-family:var(--mono);font-size:12px;font-weight:700;opacity:.85}

/* proof / dark callout */
.proof{background:linear-gradient(135deg,#0b1220,#15213f);color:#dbe4fb;border-radius:var(--r);padding:40px;box-shadow:var(--shadow-lg)}
.proof h2{color:#fff}
.proof .lead{color:#aab8dc}
.checks{display:grid;grid-template-columns:repeat(2,1fr);gap:13px 26px;margin-top:24px}
@media(max-width:680px){.checks{grid-template-columns:1fr}}
.checks div{display:flex;gap:11px;font-size:14.6px;color:#c6d2f0}
.checks .ck{color:var(--cyan);font-weight:800;flex:0 0 auto}
.proof code{background:rgba(255,255,255,.08);color:#a5e9f5}

/* subpage cards (cross-links) */
.xcards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:860px){.xcards{grid-template-columns:1fr}}
.xcard{display:block;text-decoration:none;border:1px solid var(--line);border-radius:var(--r);padding:28px;background:#fff;box-shadow:var(--shadow);transition:.2s}
.xcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--indigo-2)}
.xcard .k{font-family:var(--mono);font-size:12px;color:var(--indigo);font-weight:700;letter-spacing:.06em}
.xcard h3{margin:8px 0 8px;color:var(--ink)}
.xcard p{color:var(--soft);font-size:14.5px}
.xcard .go{margin-top:14px;color:var(--indigo);font-weight:700;font-size:14.5px}

/* pricing */
.ptable .feat{color:var(--soft);font-size:13.6px}
.price{font-family:var(--mono);font-weight:800;color:var(--ink);font-size:16px;white-space:nowrap}
.price small{font-weight:600;color:var(--faint);font-size:12px}
.hot{background:rgba(79,70,229,.06)!important}
.badge{display:inline-block;font-size:11px;font-weight:800;font-family:var(--mono);color:#fff;background:var(--indigo);padding:2px 8px;border-radius:6px;margin-left:8px}
.tiers{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:8px}
@media(max-width:760px){.tiers{grid-template-columns:1fr}}
.tier{border:1px solid var(--line);border-radius:var(--r);padding:22px;background:#fff;box-shadow:var(--shadow)}
.tier h3{font-size:16px}
.tier .steps{font-family:var(--mono);font-size:13.5px;color:var(--soft);margin-top:8px;line-height:1.9}
.note-card{background:#fff;border:1px solid var(--line);border-left:3px solid var(--indigo);border-radius:var(--r-sm);padding:18px 22px;box-shadow:var(--shadow);font-size:14.6px;color:var(--soft)}
.note-card b{color:var(--ink)}
/* seat total comparison */
.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:760px){.compare{grid-template-columns:1fr}}
.ccol{border:1px solid var(--line);border-radius:var(--r);background:#fff;box-shadow:var(--shadow);padding:26px 22px 24px;text-align:center;position:relative;transition:.2s}
.ccol:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.ccol.best{border-color:var(--indigo-2);box-shadow:0 0 0 2px rgba(99,102,241,.18),var(--shadow-lg)}
.ccol.gifted{border-color:#fcd34d;box-shadow:0 0 0 2px rgba(245,158,11,.16),var(--shadow)}
.ccol .seats{font-family:var(--mono);font-weight:800;font-size:23px;color:var(--ink);letter-spacing:-.02em}
.ccol .unit{font-size:13.5px;color:var(--faint);margin-top:4px}
.ccol .total{font-family:var(--mono);font-weight:800;font-size:31px;color:var(--indigo);margin-top:16px;letter-spacing:-.02em;line-height:1}
.ccol .total small{font-size:13px;color:var(--faint);font-weight:600}
.ccol .mo{font-size:13.5px;color:var(--soft);margin-top:6px}
.ccol .save{margin-top:13px;font-size:12.5px;font-weight:700;color:var(--emerald);background:#ecfdf5;border-radius:999px;padding:4px 12px;display:inline-block}
.ccol .save.zero{color:var(--amber);background:#fffbeb}
.ccol .cbadge{position:absolute;top:-11px;left:50%;transform:translateX(-50%);font-family:var(--mono);font-size:11px;font-weight:800;color:#fff;padding:3px 12px;border-radius:999px;white-space:nowrap}
.ccol .cbadge.gift{background:var(--amber)}
.ccol .cbadge.hot{background:var(--indigo)}
.gift-note{margin-top:18px;background:linear-gradient(135deg,#fffbeb,#fef3c7);border:1px solid #fde68a;border-radius:var(--r-sm);padding:16px 20px;font-size:14.6px;color:#92400e}
.gift-note b{color:#7c2d12}
.kv{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(max-width:680px){.kv{grid-template-columns:1fr}}
.kv .i{display:flex;gap:10px;font-size:14.6px;color:var(--soft)}
.kv .i .c{color:var(--emerald);font-weight:800;flex:0 0 auto}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:var(--r-sm);margin-bottom:12px;background:#fff;overflow:hidden;box-shadow:var(--shadow)}
.faq summary{padding:20px 24px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:14px;font-size:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-family:var(--mono);color:var(--indigo);font-size:22px;transition:.2s;flex:0 0 auto}
.faq details[open] summary:after{transform:rotate(45deg)}
.faq .ans{padding:0 24px 22px;color:var(--soft);font-size:15px}

/* CTA */
.cta{background:radial-gradient(800px 400px at 50% 0,rgba(99,102,241,.22),transparent 60%),linear-gradient(180deg,#0b1220,#101a35);color:#fff;text-align:center}
.cta h2{color:#fff;max-width:20ch;margin:0 auto 16px}
.cta .lead{color:#b6c2e0;margin:0 auto 30px}
.cta .btns{justify-content:center}
.contactbox{display:inline-flex;flex-wrap:wrap;gap:10px 28px;justify-content:center;margin-top:30px;font-size:14.5px;color:#9fb0d6}
.contactbox b{color:#fff}
.qr{width:fit-content;max-width:100%;margin:30px auto 0;display:flex;flex-direction:column;align-items:center;background:#fff;border-radius:12px;padding:0;overflow:hidden;box-shadow:var(--shadow-lg)}
.qr img{width:220px;height:220px;object-fit:contain;display:block}
.qr-cap{margin:14px auto 0;font-size:14px;color:#9fb0d6;text-align:center;line-height:1.5}
.qr-cap b{color:#fff}

footer{background:#070c18;color:#7e8db1;font-size:13.5px;padding:38px 0}
footer .wrap{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:center}
footer a{color:#aeb9d4;text-decoration:none}
.reveal{opacity:0;transform:translateY(18px);transition:.6s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   v20260615 · 三层结构（ABC）· 难度系数标准（ADC）· 硬件矩阵
   ============================================================ */

/* dark stat row (vision band, reused inside .proof / .goal) */
.statrow{display:flex;gap:34px;flex-wrap:wrap;margin-top:26px}
.statrow .st{min-width:118px}
.statrow .st .v{font-family:var(--mono);font-weight:800;font-size:28px;color:#fff;letter-spacing:-.02em}
.statrow .st .v .am{color:var(--amber)}
.statrow .st .l{font-size:13px;color:#9fb0d6;margin-top:5px;line-height:1.45}
.proof .deckline{margin-top:26px;font-size:14.5px}
.proof .deckline a{color:var(--cyan);font-weight:700;text-decoration:none}

/* ABC three-layer ladder */
.ladder{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:880px){.ladder{grid-template-columns:1fr}}
.layer{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);border-top:4px solid var(--indigo);border-radius:var(--r);background:#fff;padding:28px 26px;box-shadow:var(--shadow);transition:.2s;text-decoration:none;color:inherit}
.layer:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cdd6ea}
.layer.a{border-top-color:#0e7490}
.layer.b{border-top-color:#4f46e5}
.layer.c{border-top-color:#ec5f1a}
.layer .lk{font-family:var(--mono);font-size:11.5px;font-weight:800;letter-spacing:.12em;color:var(--faint)}
.layer .lt{display:flex;align-items:center;gap:13px;margin:9px 0 12px}
.layer .ln{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-family:var(--mono);font-weight:800;font-size:19px;color:#fff;flex:0 0 auto}
.layer.a .ln{background:#0e7490}.layer.b .ln{background:#4f46e5}.layer.c .ln{background:#ec5f1a}
.layer h3{font-size:21px;margin:0}
.layer p{color:var(--soft);font-size:14.8px;flex:1}
.layer .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.layer .t{font-size:12px;font-weight:600;color:var(--soft);background:var(--bg-alt);border:1px solid var(--line);border-radius:999px;padding:3px 11px}
.layer .go{margin-top:16px;font-weight:700;font-size:14.5px}
.layer.a .go{color:#0e7490}.layer.b .go{color:#4f46e5}.layer.c .go{color:#ec5f1a}
.moat{margin-top:24px;font-size:clamp(15px,1.7vw,18px);color:var(--soft);text-align:center}
.moat em{color:var(--indigo);font-style:normal;font-weight:700}

/* hardware cost matrix */
.hwbase{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:22px}
@media(max-width:760px){.hwbase{grid-template-columns:1fr}}
.hwbase .b{border:1px solid var(--line);border-radius:var(--r);background:#fff;padding:22px 24px;box-shadow:var(--shadow);position:relative}
.hwbase .b.pick{border-color:var(--indigo-2);box-shadow:0 0 0 2px rgba(99,102,241,.16),var(--shadow)}
.hwbase .b .cpu{font-weight:800;font-size:18px;color:var(--ink)}
.hwbase .b .base{font-family:var(--mono);font-weight:800;font-size:24px;color:var(--indigo);margin:8px 0 4px}
.hwbase .b .spec{font-size:13.5px;color:var(--soft);line-height:1.7}
.hwbase .b .rec{position:absolute;top:-11px;right:18px;font-family:var(--mono);font-size:11px;font-weight:800;color:#fff;background:var(--indigo);border-radius:999px;padding:3px 12px}
.hwbase .b .rec.flag{background:var(--amber)}
.matrix td.pc{font-family:var(--mono);font-weight:700;color:var(--ink-2);text-align:right;white-space:nowrap}
.matrix td.gpu{font-weight:600;color:var(--ink)}
.matrix tr.flat td{background:#fbfcfe;font-weight:700;color:var(--faint);font-size:13px;text-transform:uppercase;letter-spacing:.04em}

/* ADC · 难度系数标准 */
.dims{display:grid;grid-template-columns:repeat(5,1fr);gap:13px}
@media(max-width:980px){.dims{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.dims{grid-template-columns:1fr}}
.dim{border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;padding:18px 15px;box-shadow:var(--shadow)}
.dim .dk{font-family:var(--mono);font-weight:800;color:var(--indigo);font-size:13px}
.dim h4{font-size:14.5px;margin:6px 0 9px;line-height:1.35}
.dim .scale{font-size:12.4px;color:var(--faint);line-height:1.6}
.dim .scale b{color:var(--ink-2);font-weight:700}
.formula{font-family:var(--mono);font-size:clamp(15px,2vw,21px);font-weight:700;color:var(--ink);background:linear-gradient(135deg,#eef2ff,#e0f2fe);border:1px solid #c7d2fe;border-radius:var(--r-sm);padding:20px 22px;text-align:center;letter-spacing:-.01em}
.formula .hl{color:var(--indigo)}
.formula small{display:block;font-family:var(--font);font-size:13.5px;font-weight:500;color:var(--soft);margin-top:8px;letter-spacing:0}
.tierladder{display:grid;gap:10px;margin-top:18px}
.trow{display:grid;grid-template-columns:78px 1fr auto;gap:18px;align-items:center;border:1px solid var(--line);border-left:4px solid var(--indigo);border-radius:var(--r-sm);background:#fff;padding:13px 18px;box-shadow:var(--shadow)}
@media(max-width:600px){.trow{grid-template-columns:64px 1fr;row-gap:6px}.trow .coef{grid-column:2}}
.trow .lv{font-family:var(--mono);font-weight:800;font-size:15px;color:var(--ink)}
.trow .desc{font-size:14.2px;color:var(--soft)}
.trow .desc b{color:var(--ink)}
.trow .coef{font-family:var(--mono);font-weight:800;color:var(--indigo);font-size:14.5px;white-space:nowrap}
.trow.l1{border-left-color:#0e7490}.trow.l2{border-left-color:#0891b2}.trow.l3{border-left-color:#4f46e5}.trow.l4{border-left-color:#7c3aed}.trow.l5{border-left-color:#ec5f1a}
.lvl{display:inline-block;font-family:var(--mono);font-size:11px;font-weight:800;padding:2px 8px;border-radius:6px;color:#fff;white-space:nowrap}
.lvl.l1{background:#0e7490}.lvl.l2{background:#0891b2}.lvl.l3{background:#4f46e5}.lvl.l4{background:#7c3aed}.lvl.l5{background:#ec5f1a}
.matrix td.coefcell,td.coefcell{font-family:var(--mono);font-weight:800;color:var(--indigo);font-size:15px;text-align:center}
td.sigma{font-family:var(--mono);color:var(--soft);text-align:center}
td.dpts{font-family:var(--mono);color:var(--faint);font-size:13px;white-space:nowrap}

/* scenario explainer cards (8 场景) */
.scenhead{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:8px}
.scenhead h3{margin:0}
.scenhead .co{font-family:var(--mono);font-weight:800;color:var(--indigo);font-size:19px;flex:0 0 auto;text-align:right;line-height:1.15}
.scenhead .co small{display:block;font-size:11px;color:var(--faint);font-weight:700}
.scen-meta{font-family:var(--mono);font-size:12px;color:var(--faint);margin-top:8px}
.groupcap{font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);font-weight:700;margin:30px 0 14px;display:flex;align-items:center;gap:12px}
.groupcap:after{content:"";flex:1;height:1px;background:var(--line)}