/* ─── tokens ─────────────────────────────────────────── */
:root{
  --bg:#0b0c0e;
  --bg-2:#0f1114;
  --panel:#12151a;
  --ink:#efece5;
  --ink-soft:#cdc8be;
  --muted:#948f85;
  --line:rgba(255,255,255,.085);
  --line-2:rgba(255,255,255,.16);
  --accent:#e8b14c;
  --qiyu:#4a7dff;
  --chatwoot:#a78bfa;
  --oncs:#ff7a45;
  --sans:-apple-system,"SF Pro SC","PingFang SC","Helvetica Neue","Noto Sans SC",Arial,sans-serif;
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC","STSong",Georgia,serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --rail:216px;
  --pad:clamp(20px,4vw,56px);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
code{font-family:var(--mono);font-size:.85em;background:rgba(255,255,255,.06);padding:.12em .42em;border-radius:4px;color:#e8e2d6;word-break:break-word}
b,strong{font-weight:600;color:#fff}
em{font-style:normal;color:var(--accent)}

.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 var(--pad)}

/* ─── progress ───────────────────────────────────────── */
.progress{position:fixed;inset:0 0 auto 0;height:2px;background:rgba(255,255,255,.05);z-index:60}
.progress span{display:block;height:100%;width:100%;background:linear-gradient(90deg,var(--accent),#ff8f5e);transform:scaleX(0);transform-origin:0 50%;transition:transform .12s linear}

/* ─── rail ───────────────────────────────────────────── */
.rail{
  position:fixed;left:0;top:0;bottom:0;width:var(--rail);z-index:50;
  padding:36px 24px;display:flex;flex-direction:column;gap:28px;
  border-right:1px solid var(--line);background:rgba(11,12,14,.72);
  backdrop-filter:blur(14px) saturate(1.2);
}
.rail__brand{display:flex;align-items:center;gap:10px}
.rail__dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(232,177,76,.14)}
.rail__brandText{font-size:12px;line-height:1.35;letter-spacing:.06em;color:var(--ink-soft);text-transform:uppercase}
.rail__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;flex:1}
.rail__list a{
  display:flex;align-items:center;gap:10px;padding:7px 8px;border-radius:6px;
  font-size:13px;color:var(--muted);transition:color .2s,background .2s;
}
.rail__list a::before{content:attr(data-n);font-family:var(--mono);font-size:11px;opacity:.5;min-width:18px}
.rail__list a:hover{color:var(--ink);background:rgba(255,255,255,.04)}
.rail__list a.is-active{color:var(--ink);background:rgba(255,255,255,.055)}
.rail__list a.is-active::before{opacity:1;color:var(--accent)}
.rail__hint{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:#8f897d;text-transform:uppercase}

/* ─── cover ──────────────────────────────────────────── */
.cover{
  min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  position:relative;padding:clamp(80px,12vh,140px) 0 clamp(60px,10vh,120px);
  border-bottom:1px solid var(--line);overflow:hidden;
}
.cover__glow{
  position:absolute;inset:-20% -10% auto -10%;height:120%;pointer-events:none;
  background:
    radial-gradient(52% 44% at 22% 18%,rgba(74,125,255,.16),transparent 62%),
    radial-gradient(46% 40% at 78% 10%,rgba(167,139,250,.13),transparent 60%),
    radial-gradient(40% 38% at 62% 52%,rgba(255,122,69,.09),transparent 64%);
  filter:blur(6px);
}
.cover__colophon{
  display:flex;flex-wrap:wrap;gap:8px 18px;margin:30px 0 0;padding-top:16px;
  border-top:1px solid var(--line);max-width:720px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:#8f897d;
}
.cover__colophon span+span::before{content:"·";margin-right:18px;color:#5c5850}
.cover__title{
  margin:0;font-family:var(--serif);font-weight:600;
  font-size:clamp(46px,8.4vw,104px);line-height:1.06;letter-spacing:-.015em;
}
.cover__title em{color:#efa863}
.cover__lede{max-width:44ch;margin:34px 0 0;font-size:clamp(16px,1.5vw,19px);color:var(--ink-soft);line-height:1.85}
.cover__lede strong{color:#fff}
.cover__stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin:56px 0 0;
  border-top:1px solid var(--line);padding-top:26px;max-width:720px;
}
.cover__stats div{padding-right:16px}
.cover__stats dt{font-size:11.5px;letter-spacing:.1em;color:var(--muted);margin-bottom:6px}
.cover__stats dd{margin:0;font-family:var(--mono);font-size:clamp(22px,3vw,30px);line-height:1.1;color:#fff}
.cover__stats dd span{font-family:var(--sans);font-size:11px;color:var(--muted);margin-left:4px}
.cover__scroll{position:absolute;left:var(--pad);bottom:30px;display:flex;align-items:center;gap:10px;color:#8f897d}
.cover__scroll span{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase}
.cover__scroll i{display:block;width:44px;height:1px;background:linear-gradient(90deg,#5f5b54,transparent);animation:slide 2.4s ease-in-out infinite}
@keyframes slide{0%,100%{transform:translateX(0);opacity:.6}50%{transform:translateX(8px);opacity:1}}

/* ─── section ────────────────────────────────────────── */
.sec{padding:clamp(64px,8.5vw,118px) 0;border-bottom:1px solid var(--line);position:relative}
.sec--qiyu::before,.sec--chatwoot::before,.sec--oncs::before,.sec--accent::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
}
.sec--qiyu::before{background:linear-gradient(90deg,var(--qiyu),transparent 42%)}
.sec--chatwoot::before{background:linear-gradient(90deg,var(--chatwoot),transparent 42%)}
.sec--oncs::before{background:linear-gradient(90deg,var(--oncs),transparent 42%)}
.sec--accent{background:linear-gradient(180deg,rgba(232,177,76,.05),transparent 30%)}

.kicker{
  display:flex;align-items:center;gap:14px;margin:0 0 26px;
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);
}
.kicker span{color:var(--accent)}
.kicker::after{content:"";flex:1;height:1px;background:var(--line);max-width:180px}

.h2{
  margin:0 0 26px;font-family:var(--serif);font-weight:600;
  font-size:clamp(30px,4.4vw,54px);line-height:1.2;letter-spacing:-.01em;
}
.h3{
  margin:64px 0 24px;font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);font-weight:500;font-family:var(--mono);
}
.lede{margin:0 0 8px;max-width:60ch;font-size:clamp(16px,1.35vw,18px);color:var(--ink-soft);line-height:1.9}
.note{margin:22px 0 0;font-size:13.5px;color:var(--muted);line-height:1.75;max-width:70ch}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ─── cards ──────────────────────────────────────────── */
.cards3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:48px 0 0}
.pcard{
  position:relative;padding:26px 24px 22px;border:1px solid var(--line);border-radius:14px;
  background:linear-gradient(180deg,rgba(255,255,255,.028),rgba(255,255,255,.008));
  display:flex;flex-direction:column;gap:14px;overflow:hidden;
  transition:border-color .3s,transform .3s,background .3s;
}
.pcard::after{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--c);opacity:.85}
.pcard:hover{border-color:var(--line-2);transform:translateY(-3px);background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012))}
.pcard__tag{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--c)}
.pcard h3{margin:6px 0 2px;font-size:22px;font-weight:600;letter-spacing:-.01em}
.pcard__sub{margin:0;font-size:12px;color:var(--muted)}
.pcard__one{margin:2px 0 0;font-size:15px;color:var(--ink-soft);line-height:1.7}
.pcard ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:7px}
.pcard li{position:relative;padding-left:15px;font-size:13.5px;color:var(--muted);line-height:1.65}
.pcard li::before{content:"";position:absolute;left:0;top:.62em;width:5px;height:1px;background:var(--c);opacity:.7}
.pcard__fit{margin:auto 0 0;padding-top:16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.pcard__fit b{color:var(--ink-soft);font-weight:500;margin-right:6px}

/* pull quote */
.pull{
  margin:64px 0 0;padding:0;border:0;max-width:46ch;
}
.pull p{
  margin:0;font-family:var(--serif);font-size:clamp(21px,2.6vw,31px);line-height:1.55;color:var(--ink);
}
.pull p em{color:var(--accent)}
.pull--small{margin-top:56px}

/* ─── split / facts ──────────────────────────────────── */
.split{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:48px;align-items:start}
.split .lede{max-width:none}
.facts{margin:0;display:grid;gap:0;border-top:1px solid var(--line)}
.facts div{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}
.facts dt{font-size:12px;color:var(--muted);letter-spacing:.04em;white-space:nowrap}
.facts dd{margin:0;font-size:13.5px;color:var(--ink);text-align:right}

/* ─── stack ──────────────────────────────────────────── */
.stack{border:1px solid var(--line);border-radius:12px;overflow:hidden}
.stack__row{display:grid;grid-template-columns:140px 1fr;gap:20px;padding:16px 22px;border-bottom:1px solid var(--line);align-items:baseline}
.stack__row:last-child{border-bottom:0}
.stack__row b{font-size:12px;letter-spacing:.1em;color:var(--accent);font-weight:500;font-family:var(--mono);text-transform:uppercase}
.stack__row span{font-size:14px;color:var(--ink-soft);line-height:1.7}
.stack__row--base{background:rgba(74,125,255,.05)}

/* ─── shots ──────────────────────────────────────────── */
.shot{margin:28px 0 0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel);cursor:zoom-in;transition:border-color .3s,transform .3s}
.shot:hover{border-color:var(--line-2);transform:translateY(-2px)}
.shot img{width:100%;height:auto;display:block}
.shot figcaption{padding:13px 18px;font-size:12.5px;color:var(--muted);line-height:1.6;border-top:1px solid var(--line);display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.shot figcaption b{color:var(--ink-soft);font-weight:500}
.shot .src{margin-left:auto;font-family:var(--mono);font-size:11px;color:#8f897d}
.shot--wide{margin-top:40px}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:18px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:22px}
.grid2 .shot,.grid3 .shot{margin:0}

/* ─── numeric grid ───────────────────────────────────── */
.numgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.num{padding:22px 22px 24px;background:var(--bg);transition:background .3s}
.num:hover{background:var(--bg-2)}
.num b{display:block;font-family:var(--mono);font-size:11px;color:var(--accent);letter-spacing:.14em;margin-bottom:10px}
.num p{margin:0;font-size:13.5px;line-height:1.75;color:var(--muted)}
.num p strong{display:block;color:var(--ink);font-size:14.5px;font-weight:600;margin-bottom:5px}
.num--warn b{color:#ff6f61}
.num--warn:hover{background:rgba(255,111,97,.05)}

/* ─── claims ─────────────────────────────────────────── */
.claims{margin:56px 0 0;padding:26px 0 0;border-top:1px solid var(--line)}
.claims__note{margin:0 0 18px;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#8f897d}
.claims ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.claims li{border-left:1px solid var(--line-2);padding-left:16px}
.claims b{display:block;font-family:var(--mono);font-size:clamp(24px,3.2vw,34px);line-height:1.1;color:#fff;font-weight:500}
.claims span{display:block;margin-top:6px;font-size:12px;color:var(--muted);line-height:1.5}

/* ─── price ──────────────────────────────────────────── */
.price{margin:52px 0 0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg-2)}
.price__head{display:flex;justify-content:space-between;padding:14px 22px;border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.price table{width:100%;border-collapse:collapse}
.price th,.price td{padding:14px 22px;text-align:left;font-size:13.5px;border-bottom:1px solid var(--line);color:var(--muted)}
.price thead th{font-size:12px;letter-spacing:.08em;color:var(--ink-soft);font-weight:500}
.price tbody tr:first-child td b{font-family:var(--mono);font-size:20px;color:#fff;font-weight:500}
.price tbody tr:last-child td{border-bottom:0}
.price__foot{margin:0;padding:14px 22px;font-size:12.5px;color:var(--muted);border-top:1px solid var(--line);background:rgba(255,255,255,.02)}

/* ─── findings ───────────────────────────────────────── */
.findings{list-style:none;margin:0;padding:0;counter-reset:f;border-top:1px solid var(--line)}
.findings li{
  counter-increment:f;position:relative;padding:24px 0 24px 54px;border-bottom:1px solid var(--line);
}
.findings li::before{
  content:counter(f,decimal-leading-zero);position:absolute;left:0;top:26px;
  font-family:var(--mono);font-size:11px;color:var(--accent);letter-spacing:.1em;
}
.findings b{display:block;font-size:15.5px;color:var(--ink);font-weight:600;margin-bottom:6px;line-height:1.6}
.findings p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.8;max-width:78ch}

/* ─── vim (vertical flow) ────────────────────────────── */
.vim{margin:44px 0 0;padding-left:26px;position:relative;display:flex;flex-direction:column;gap:2px}
.vim__track{position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:linear-gradient(180deg,rgba(255,122,69,.75),rgba(255,122,69,.08))}
.vim__track i{position:absolute;left:-2.5px;top:0;width:6px;height:6px;border-radius:50%;background:var(--oncs)}
.vim__lane{padding:14px 0 14px 8px;border-bottom:1px solid var(--line)}
.vim__lane:last-child{border-bottom:0}
.vim__lane b{display:block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--oncs);font-family:var(--mono);font-weight:500;margin-bottom:4px}
.vim__lane span{font-size:14px;color:var(--ink-soft);line-height:1.7}

/* ─── videos ─────────────────────────────────────────── */
.videos{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:22px}
.video{margin:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#000}
.video__btn{position:relative;display:block;width:100%;padding:0;border:0;background:none;cursor:pointer;line-height:0}
.video__btn img{width:100%;height:auto;opacity:.72;transition:opacity .3s,transform .6s}
.video__btn:hover img{opacity:.95;transform:scale(1.02)}
.video__play{
  position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%);
  width:52px;height:52px;border-radius:50%;border:1px solid rgba(255,255,255,.5);
  background:rgba(10,10,12,.42);backdrop-filter:blur(6px);transition:background .3s,transform .3s;
}
.video__play::after{
  content:"";position:absolute;inset:50% auto auto 54%;transform:translate(-50%,-50%);
  border-left:12px solid #fff;border-top:7px solid transparent;border-bottom:7px solid transparent;
}
.video__btn:hover .video__play{background:rgba(255,122,69,.85);transform:translate(-50%,-50%) scale(1.06)}
.video__label{
  position:absolute;top:10px;right:10px;padding:4px 10px;border-radius:999px;
  font-family:var(--mono);font-size:11px;letter-spacing:.04em;color:#efece5;
  background:rgba(8,9,11,.74);border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(4px);
}
.video video{width:100%;display:block;background:#000}

/* ─── matrix ─────────────────────────────────────────── */
.tablewrap{overflow-x:auto;margin-top:44px;border:1px solid var(--line);border-radius:12px;-webkit-overflow-scrolling:touch}
.matrix{width:100%;border-collapse:collapse;min-width:680px}
.matrix th,.matrix td{padding:13px 18px;text-align:left;font-size:13.5px;border-bottom:1px solid var(--line)}
.matrix thead th{
  position:sticky;top:0;background:#0e1013;font-family:var(--mono);font-size:11px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:500;z-index:2;
}
.matrix thead th[style]{color:var(--c)}
.matrix tbody th{font-weight:400;color:var(--muted);font-size:12.5px;white-space:nowrap;border-right:1px solid var(--line)}
.matrix td{color:var(--ink-soft)}
.matrix tr:last-child th,.matrix tr:last-child td{border-bottom:0}
.matrix tr:hover td,.matrix tr:hover th{background:rgba(255,255,255,.022)}
.yes{color:#8bd6a8 !important}
.mid{color:#e8c67a !important}
.no{color:#e0877f !important}

/* ─── lanes ──────────────────────────────────────────── */
.lanes{display:grid;gap:16px;margin:44px 0 0}
.lane{
  display:grid;grid-template-columns:52px minmax(0,.95fr) minmax(0,1.05fr) minmax(0,1.1fr) auto;
  gap:22px;align-items:start;padding:26px 0;border-top:1px solid var(--line);
}
.lane:last-child{border-bottom:1px solid var(--line)}
.lane__idx{font-family:var(--mono);font-size:30px;line-height:1;color:#7d776c;letter-spacing:-.02em}
.lane h3{margin:0 0 8px;font-size:19px;font-weight:600;letter-spacing:-.01em}
.lane__why{margin:0;font-size:13.5px;color:var(--muted);line-height:1.8}
.lane__do{margin:0;font-size:13.5px;color:var(--ink-soft);line-height:1.8}
.lane__do b{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:6px;font-weight:500}
.lane__verdict{
  margin:4px 0 0;padding:7px 14px;border-radius:999px;font-size:12px;white-space:nowrap;
  border:1px solid currentColor;font-family:var(--mono);letter-spacing:.08em;
}
.lane__verdict.ok{color:#8bd6a8}
.lane__verdict.warn{color:#ffb27a}

/* ─── phases ─────────────────────────────────────────── */
.phases{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:44px 0 0}
.phase{border:1px solid var(--line);border-radius:12px;padding:0;overflow:hidden;background:linear-gradient(180deg,rgba(255,255,255,.025),transparent)}
.phase header{display:flex;align-items:baseline;gap:12px;padding:20px 22px 14px;border-bottom:1px solid var(--line)}
.phase header span{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--accent)}
.phase h3{margin:0;font-size:16px;font-weight:600}
.phase ul{list-style:none;margin:0;padding:16px 22px 22px;display:flex;flex-direction:column;gap:9px}
.phase li{position:relative;padding-left:14px;font-size:13.5px;color:var(--muted);line-height:1.65}
.phase li::before{content:"";position:absolute;left:0;top:.62em;width:5px;height:1px;background:var(--accent);opacity:.6}

/* ─── metrics ────────────────────────────────────────── */
.metrics{margin-top:40px;padding-top:8px;border-top:1px solid var(--line)}
.metrics dl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:22px 0 0}
.metrics dl div{background:var(--bg);padding:20px 22px}
.metrics dt{font-size:12px;font-family:var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:6px}
.metrics dd{margin:0;font-size:13.5px;color:var(--muted);line-height:1.6}

/* ─── risk / sources ─────────────────────────────────── */
.risk ul{list-style:none;margin:32px 0 0;padding:0;display:grid;gap:0;border-top:1px solid var(--line)}
.risk li{padding:18px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted);line-height:1.8;padding-left:22px;position:relative}
.risk li::before{content:"—";position:absolute;left:0;color:#8f897d}
.risk b{color:var(--ink);font-weight:600}
.sources{margin-top:20px}
.sources ol{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:10px}
.sources li{font-size:13.5px;color:var(--muted);line-height:1.8}
.foot{margin:72px 0 40px;padding:28px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(180deg,rgba(232,177,76,.05),transparent)}
.foot p{margin:0 0 12px;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.foot ol{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:8px}
.foot li{font-size:13.5px;color:var(--ink-soft);line-height:1.7}

/* ─── lightbox ───────────────────────────────────────── */
.lightbox[hidden]{display:none}
.lightbox{
  position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;
  background:rgba(6,7,9,.94);backdrop-filter:blur(8px);padding:clamp(16px,4vw,56px);
  animation:fade .25s ease;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lightbox img{max-width:100%;max-height:calc(100svh - 2*clamp(16px,4vw,56px));width:auto;border-radius:8px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.lightbox__close{
  position:absolute;top:18px;right:22px;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line-2);background:rgba(255,255,255,.06);color:#fff;font-size:22px;line-height:1;
  cursor:pointer;transition:background .2s;
}
.lightbox__close:hover{background:rgba(255,255,255,.14)}

/* ─── responsive ─────────────────────────────────────── */
@media (max-width:1180px){
  body{padding-left:0}
  .rail{display:none}
  .wrap{padding-left:clamp(20px,5vw,48px)}
}
@media (max-width:960px){
  .cards3,.grid3,.videos,.phases,.numgrid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:28px}
  .lanes{grid-template-columns:1fr}
  .lane{grid-template-columns:40px 1fr;gap:14px 16px}
  .lane__verdict{grid-column:2;justify-self:start;margin-top:2px}
  .grid2{grid-template-columns:1fr}
  .claims ul{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:24px}
  .cover__stats{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:22px}
  .metrics dl{grid-template-columns:1fr}
  .findings li{padding-left:44px}
}
@media (max-width:620px){
  body{font-size:16px}
  .numgrid{grid-template-columns:1fr}
  .stack__row{grid-template-columns:1fr;gap:6px;padding:14px 18px}
  .price th,.price td{padding:11px 14px;font-size:12.5px}
  .price thead th{font-size:11px}
  .claims ul{grid-template-columns:1fr}
  .lane__idx{font-size:22px}
  .foot{padding:22px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .cover__scroll i{animation:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

@media (min-width:1181px){
  body{padding-left:var(--rail)}
  .rail{display:flex}
}

/* ─── 全景：四阵营 ───────────────────────────────────── */
.mapgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:44px 0 0}
.camp{
  border:1px solid var(--line);border-radius:14px;padding:22px 22px 18px;
  background:linear-gradient(180deg,rgba(255,255,255,.028),transparent);
  position:relative;overflow:hidden;
}
.camp::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--c);opacity:.85}
.camp header{display:flex;align-items:baseline;gap:10px;margin-bottom:14px}
.camp header span{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--c)}
.camp h3{margin:0;font-size:18px;font-weight:600}
.camp header p{margin:0 0 0 auto;font-family:var(--mono);font-size:11px;color:var(--muted)}
.camp ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.camp li{display:flex;flex-direction:column;gap:2px;padding-left:12px;position:relative}
.camp li::before{content:"";position:absolute;left:0;top:.55em;width:5px;height:1px;background:var(--c);opacity:.7}
.camp li b{font-size:14px;color:var(--ink);font-weight:600}
.camp li span{font-size:12.5px;color:var(--muted);line-height:1.6}
.camp__note{margin:16px 0 0;padding-top:12px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);line-height:1.7}

/* ─── 产品档案 ──────────────────────────────────────── */
.dossier{
  margin-top:40px;padding:26px 26px 24px;border:1px solid var(--line);border-radius:16px;
  background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.008));
  scroll-margin-top:24px;
}
.dossier__head{display:flex;align-items:flex-start;gap:14px}
.dossier__idx{font-family:var(--mono);font-size:11px;color:var(--accent);padding-top:6px;letter-spacing:.1em}
.dossier__head h3{margin:0;font-size:clamp(21px,2.3vw,27px);font-weight:600;letter-spacing:-.01em;line-height:1.25}
.dossier__head h3 span{display:block;margin-top:4px;font-size:12px;font-weight:400;color:var(--muted);letter-spacing:.02em}
.dossier__flag{
  margin-left:auto;flex:none;font-family:var(--mono);font-size:11px;color:var(--muted);
  border:1px solid var(--line);padding:4px 11px;border-radius:999px;white-space:nowrap;
}
.dossier__one{margin:16px 0 0;font-size:15.5px;line-height:1.75;color:var(--ink);max-width:62ch}
.dossier__grid{
  display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,.9fr);
  gap:38px;margin-top:22px;padding-top:22px;border-top:1px solid var(--line);
}
.dossier__notes{list-style:none;margin:0;padding:0;counter-reset:n;display:flex;flex-direction:column;gap:16px}
.dossier__notes li{counter-increment:n;padding-left:28px;position:relative}
.dossier__notes li::before{
  content:counter(n,decimal-leading-zero);position:absolute;left:0;top:2px;
  font-family:var(--mono);font-size:11px;color:var(--accent);opacity:.75;
}
.dossier__notes b{display:block;font-size:14.5px;color:var(--ink);font-weight:600;margin-bottom:4px}
.dossier__notes p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.8}
.dossier .facts{border-top:0;align-self:start}
.dossier .facts div:first-child{padding-top:0}
.dossier .shot{margin-top:24px}

/* ─── 计价模型 ──────────────────────────────────────── */
.prices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:44px 0 0}

/* ─── 对照表扩容 ────────────────────────────────────── */
.matrix{min-width:900px}
.matrix thead th:first-child{width:150px}

/* ─── 响应式补充 ────────────────────────────────────── */
@media (max-width:1100px){
  .dossier__grid{grid-template-columns:1fr;gap:24px}
  .mapgrid{grid-template-columns:1fr}
  .prices{grid-template-columns:1fr}
}
@media (max-width:620px){
  .dossier{padding:20px 18px}
  .dossier__head{flex-wrap:wrap}
  .dossier__flag{margin-left:0}
}

/* 档案配图统一比例，避免长图撑高卡片；点开看原图 */
.dossier .shot img{
  width:100%;max-height:520px;object-fit:cover;object-position:top center;
}
@media (max-width:760px){.dossier .shot img{max-height:340px}}

/* ─── 自动化分级 ─────────────────────────────────────── */
.ladder{margin:44px 0 0;padding:18px 10px 10px;border:1px solid var(--line);border-radius:14px;background:var(--bg-2);overflow-x:auto}
.ladder svg{width:100%;min-width:760px;height:auto;display:block}
.ladder figcaption{padding:12px 10px 4px;font-size:12.5px;color:var(--muted);line-height:1.6}
.matrix .lvl{font-family:var(--mono);font-size:12.5px;color:var(--accent);white-space:nowrap}
.matrix.grade td:nth-child(2),.matrix.calc td{color:var(--ink-soft)}
.matrix.oss td,.matrix.oss th{font-size:13px}

/* ─── 工具层清单 ─────────────────────────────────────── */
.checklist{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.checklist li{background:var(--bg);padding:16px 20px}
.checklist b{display:block;font-size:13.5px;color:var(--ink);margin-bottom:4px;font-weight:600}
.checklist span{font-size:13px;color:var(--muted);line-height:1.7}

/* ─── 成本与评测 ─────────────────────────────────────── */
.formula{margin:36px 0 0;padding:20px 22px;border:1px solid var(--line-2);border-radius:12px;background:rgba(232,177,76,.05)}
.formula code{background:none;padding:0;font-size:13.5px;line-height:1.9;color:var(--ink)}
.steps{list-style:none;margin:24px 0 0;padding:0;counter-reset:s;border-top:1px solid var(--line)}
.steps li{counter-increment:s;position:relative;padding:18px 0 18px 44px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:4px}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:20px;font-family:var(--mono);font-size:11px;color:var(--accent)}
.steps b{font-size:14.5px;color:var(--ink);font-weight:600}
.steps span{font-size:13.5px;color:var(--muted);line-height:1.8}
@media (max-width:900px){.checklist{grid-template-columns:1fr}}

/* ─── 选型器 ─────────────────────────────────────────── */
.chooser{margin:44px 0 0;padding:6px 26px 26px;border:1px solid var(--line);border-radius:16px;
  background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.006))}
.chooser fieldset{border:0;border-top:1px solid var(--line);margin:0;padding:22px 0}
.chooser fieldset:first-of-type{border-top:0;padding-top:26px}
.chooser legend{display:flex;align-items:baseline;gap:12px;padding:0;
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.chooser legend span{color:var(--accent)}
.opts{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.opts button{
  background:none;border:1px solid var(--line-2);color:var(--ink-soft);
  padding:10px 16px;border-radius:999px;font-size:13.5px;font-family:inherit;cursor:pointer;
  transition:background .2s,border-color .2s,color .2s;
}
.opts button:hover{border-color:var(--accent);color:var(--ink)}
.opts button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.opts button[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:#141518;font-weight:600}
.chooser__result{margin-top:6px;padding-top:24px;border-top:1px solid var(--line)}
.chooser__result h3{margin:0 0 8px;font-size:19px;font-weight:600;letter-spacing:-.01em}
.chooser__result p{margin:0;font-size:14px;color:var(--muted);line-height:1.85;max-width:74ch}
.chooser__picks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0 0;padding:0;list-style:none}
.chooser__picks li{border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:rgba(255,255,255,.02)}
.chooser__picks b{display:block;font-size:14px;color:var(--ink);margin-bottom:3px}
.chooser__picks span{font-size:12.5px;color:var(--muted);line-height:1.6}
.chooser__next{margin:18px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:7px}
.chooser__next li{position:relative;padding-left:16px;font-size:13px;color:var(--ink-soft);line-height:1.7}
.chooser__next li::before{content:"→";position:absolute;left:0;color:var(--accent);font-size:11px}
.chooser__reset{margin-top:18px;background:none;border:1px solid var(--line);color:var(--muted);
  padding:7px 14px;border-radius:999px;font-size:12px;font-family:inherit;cursor:pointer}
.chooser__reset:hover{color:var(--ink);border-color:var(--line-2)}
@media (max-width:760px){.chooser__picks{grid-template-columns:1fr}}
.numgrid.parts{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:760px){.numgrid.parts{grid-template-columns:1fr}}

/* ─── 失败案例 ───────────────────────────────────────── */
.fails{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:44px 0 0}
.fail{border:1px solid var(--line);border-radius:14px;padding:22px 22px 18px;background:linear-gradient(180deg,rgba(255,111,97,.035),transparent 60%)}
.fail header{display:flex;align-items:baseline;gap:12px;margin-bottom:8px}
.fail header span{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:#ff8b7a}
.fail h3{margin:0;font-size:18px;font-weight:600;letter-spacing:-.01em}
.fail__sym{margin:0 0 14px;font-size:13.5px;color:var(--ink-soft);line-height:1.7}
.fail dl{margin:0;display:flex;flex-direction:column;gap:10px}
.fail dl div{display:grid;grid-template-columns:64px 1fr;gap:12px;align-items:start}
.fail dt{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--muted);padding-top:2px}
.fail dd{margin:0;font-size:13px;color:var(--muted);line-height:1.75}
.fail dl div:last-child dd{color:var(--ink-soft)}
@media (max-width:900px){.fails{grid-template-columns:1fr}}