/* =============================================================
   复盛空压机 · 上海复方机电有限公司
   Design System — Industrial Precision
   ============================================================= */

/* ---------- 1. Tokens ---------- */
:root{
  --ink-950:#05070A;
  --ink-900:#0A0E13;
  --ink-850:#0E131A;
  --ink-800:#131A23;
  --ink-700:#1C2530;
  --ink-600:#2A3542;
  --ink-500:#3D4A5A;
  --ink-400:#5C6B7D;
  --ink-300:#8A98A8;
  --ink-200:#B9C3CE;
  --ink-100:#DDE3EA;
  --line:#E4E8EE;
  --line-2:#EEF1F5;
  --paper:#FFFFFF;
  --paper-2:#F6F7F9;
  --paper-3:#EFF1F5;

  --brand:#D8232A;
  --brand-600:#B81A21;
  --brand-700:#95141A;
  --brand-soft:rgba(216,35,42,.08);

  --cyan:#0E7CFF;
  --cyan-soft:rgba(14,124,255,.08);

  --radius-xs:4px;
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:22px;
  --radius-xl:32px;

  --shadow-xs:0 1px 2px rgba(10,14,19,.05);
  --shadow-sm:0 2px 8px rgba(10,14,19,.06);
  --shadow:0 12px 32px -12px rgba(10,14,19,.18);
  --shadow-lg:0 32px 64px -24px rgba(10,14,19,.28);
  --shadow-brand:0 16px 40px -16px rgba(216,35,42,.45);

  --font-sans:"Inter","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,"Liberation Mono",monospace;

  --maxw:1280px;
  --maxw-narrow:880px;
  --gut:clamp(20px,4vw,56px);
  --sec-y:clamp(64px,9vw,132px);

  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink-800);
  font-family:var(--font-sans);font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  font-feature-settings:"kern" 1,"liga" 1,"tnum" 1;
  overflow-x:hidden;
}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
table{border-collapse:collapse;width:100%}
::selection{background:var(--brand);color:#fff}

/* ---------- 3. Type ---------- */
.h-hero{
  font-size:clamp(38px,7.2vw,88px);line-height:.98;letter-spacing:-.035em;font-weight:800;
}
.h1{font-size:clamp(30px,4.6vw,58px);line-height:1.06;letter-spacing:-.03em;font-weight:800}
.h2{font-size:clamp(26px,3.6vw,44px);line-height:1.12;letter-spacing:-.025em;font-weight:750}
.h3{font-size:clamp(20px,2.2vw,28px);line-height:1.24;letter-spacing:-.02em;font-weight:700}
.h4{font-size:clamp(17px,1.5vw,20px);line-height:1.35;letter-spacing:-.015em;font-weight:700}
.lead{font-size:clamp(16px,1.5vw,20px);line-height:1.68;color:var(--ink-400)}
.body-s{font-size:14.5px;line-height:1.72;color:var(--ink-400)}
.eyebrow{
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--brand);display:inline-flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;opacity:.6}
.eyebrow.is-plain::before{display:none}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 4. Layout ---------- */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
.wrap-n{width:100%;max-width:var(--maxw-narrow);margin-inline:auto;padding-inline:var(--gut)}
.sec{padding-block:var(--sec-y);position:relative}
.sec--tight{padding-block:clamp(44px,5vw,72px)}
.sec--paper{background:var(--paper-2)}
.sec--ink{background:var(--ink-900);color:#fff}
.sec--ink .lead,.sec--ink .body-s{color:var(--ink-200)}
.sec--ink .eyebrow{color:#FF6B70}
.grid{display:grid;gap:clamp(18px,2.4vw,32px)}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g-auto{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.g-auto-s{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);align-items:center}
.split--wide{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}
.stack{display:flex;flex-direction:column}
.row{display:flex;align-items:center}
.between{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- 5. Header ---------- */
.hdr{
  position:sticky;top:0;z-index:200;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--line-2);transition:box-shadow .3s var(--ease),background .3s var(--ease);
}
.hdr.is-stuck{box-shadow:0 6px 28px -14px rgba(10,14,19,.22);background:rgba(255,255,255,.94)}
.hdr__bar{display:flex;align-items:center;justify-content:space-between;gap:20px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{
  width:38px;height:38px;border-radius:10px;background:linear-gradient(145deg,var(--brand),var(--brand-700));
  display:grid;place-items:center;box-shadow:var(--shadow-brand);flex-shrink:0;
}
.brand__mark svg{width:20px;height:20px;fill:#fff}
.brand__txt{display:flex;flex-direction:column;line-height:1.12}
.brand__cn{font-weight:800;font-size:16.5px;letter-spacing:-.02em;color:var(--ink-900)}
.brand__en{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.1em;color:var(--ink-400);text-transform:uppercase}
.nav{display:flex;align-items:center;gap:2px}
.nav__i{position:relative}
.nav__a{
  display:flex;align-items:center;gap:6px;padding:9px 13px;border-radius:var(--radius-sm);
  font-size:14.5px;font-weight:550;color:var(--ink-600);transition:color .2s,background .2s;white-space:nowrap;
}
.nav__a:hover{color:var(--ink-900);background:var(--paper-3)}
.nav__a.is-on{color:var(--brand)}
.nav__a svg{width:12px;height:12px;opacity:.5;transition:transform .25s var(--ease)}
.nav__i:hover .nav__a svg{transform:rotate(180deg)}
.drop{
  position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(-8px);
  min-width:260px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);padding:10px;opacity:0;visibility:hidden;transition:all .26s var(--ease);z-index:10;
}
.nav__i:hover .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop--wide{min-width:620px;display:grid;grid-template-columns:1fr 1fr;gap:4px}
.drop__a{display:block;padding:9px 12px;border-radius:var(--radius-sm);transition:background .18s}
.drop__a:hover{background:var(--paper-2)}
.drop__t{font-size:14px;font-weight:600;color:var(--ink-800)}
.drop__d{font-size:12px;color:var(--ink-400);margin-top:2px;line-height:1.5}
.drop__a:hover .drop__t{color:var(--brand)}
.hdr__act{display:flex;align-items:center;gap:10px;flex-shrink:0}
.hdr__tel{display:flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:14px;font-weight:600;color:var(--ink-800)}
.hdr__tel svg{width:15px;height:15px;fill:var(--brand)}
.burger{display:none;width:42px;height:42px;border-radius:var(--radius-sm);place-items:center;background:var(--paper-3)}
.burger span{display:block;width:17px;height:1.6px;background:var(--ink-800);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:17px;height:1.6px;background:var(--ink-800)}
.burger span::before{top:-5px}.burger span::after{top:5px}

.mnav{position:fixed;inset:0;background:#fff;z-index:300;padding:22px var(--gut);overflow-y:auto;display:none}
.mnav.is-open{display:block}
.mnav__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.mnav__x{width:42px;height:42px;border-radius:var(--radius-sm);background:var(--paper-3);display:grid;place-items:center;font-size:20px}
.mnav__g{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-400);margin:22px 0 8px}
.mnav__a{display:block;padding:13px 0;border-bottom:1px solid var(--line-2);font-size:17px;font-weight:600}

/* ---------- 6. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:100px;font-size:15px;font-weight:650;letter-spacing:-.01em;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,color .25s,border-color .25s;
  white-space:nowrap;position:relative;overflow:hidden;
}
.btn svg{width:15px;height:15px;transition:transform .3s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn--brand{background:var(--brand);color:#fff;box-shadow:var(--shadow-brand)}
.btn--brand:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 20px 44px -16px rgba(216,35,42,.55)}
.btn--ink{background:var(--ink-900);color:#fff}
.btn--ink:hover{background:var(--ink-700);transform:translateY(-2px)}
.btn--ghost{border:1px solid var(--line);color:var(--ink-800);background:#fff}
.btn--ghost:hover{border-color:var(--ink-800);transform:translateY(-2px)}
.btn--light{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2)}
.btn--light:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn--sm{padding:10px 18px;font-size:13.5px}
.btn--block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-weight:650;font-size:14.5px;color:var(--brand)}
.link-arrow svg{width:14px;height:14px;transition:transform .3s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- 7. Hero ---------- */
.hero{position:relative;background:var(--ink-950);color:#fff;overflow:hidden;isolation:isolate}
.hero__bg{position:absolute;inset:0;z-index:-2}
.hero__bg img{width:100%;height:100%;object-fit:cover;opacity:.30;filter:saturate(.85)}
.hero__veil{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(120% 90% at 78% 18%,rgba(216,35,42,.20) 0%,transparent 58%),
    radial-gradient(90% 70% at 8% 92%,rgba(14,124,255,.14) 0%,transparent 60%),
    linear-gradient(180deg,rgba(5,7,10,.72) 0%,rgba(5,7,10,.88) 52%,rgba(5,7,10,.97) 100%);
}
.hero__grid{
  position:absolute;inset:0;z-index:-1;opacity:.30;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:74px 74px;
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 40%,#000 20%,transparent 78%);
  mask-image:radial-gradient(ellipse 90% 70% at 50% 40%,#000 20%,transparent 78%);
}
.hero__in{padding-block:clamp(72px,11vw,148px) clamp(56px,8vw,104px);position:relative}
.hero__pill{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:100px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.82);
  backdrop-filter:blur(10px);
}
.hero__pill i{width:6px;height:6px;border-radius:50%;background:#43D17A;box-shadow:0 0 0 3px rgba(67,209,122,.22);animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.42}}
.hero h1{margin:24px 0 0;max-width:16ch}
.hero h1 em{font-style:normal;color:#FF5A60}
.hero__sub{margin-top:24px;max-width:60ch;font-size:clamp(15.5px,1.5vw,19px);line-height:1.7;color:rgba(255,255,255,.72)}
.hero__cta{display:flex;flex-wrap:wrap;gap:13px;margin-top:38px}
.hero__stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin-top:clamp(48px,6vw,76px);
  border-top:1px solid rgba(255,255,255,.12);padding-top:0;
}
.hero__stat{padding:26px 22px 0;border-right:1px solid rgba(255,255,255,.09)}
.hero__stat:last-child{border-right:0}
.hero__stat b{display:block;font-family:var(--font-mono);font-size:clamp(26px,3vw,38px);font-weight:700;letter-spacing:-.02em;line-height:1}
.hero__stat span{display:block;margin-top:9px;font-size:12.5px;color:rgba(255,255,255,.55);line-height:1.5}

.hero--page{background:var(--ink-900)}
.hero--page .hero__in{padding-block:clamp(44px,6vw,84px) clamp(38px,5vw,64px)}
.hero--page h1{max-width:24ch;font-size:clamp(28px,4.4vw,52px)}
.hero--page .hero__sub{max-width:66ch}

/* ---------- 8. Marquee ---------- */
.marq{border-block:1px solid var(--line);background:var(--paper);overflow:hidden;padding-block:20px}
.marq__t{display:flex;gap:52px;width:max-content;animation:slide 44s linear infinite}
.marq:hover .marq__t{animation-play-state:paused}
@keyframes slide{to{transform:translateX(-50%)}}
.marq__i{
  display:flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12.5px;
  letter-spacing:.06em;text-transform:uppercase;color:var(--ink-400);white-space:nowrap;
}
.marq__i::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);opacity:.5}

/* ---------- 9. Cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  transition:transform .4s var(--ease-out),box-shadow .4s var(--ease-out),border-color .4s;
  display:flex;flex-direction:column;position:relative;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.card__media{position:relative;aspect-ratio:4/3;background:linear-gradient(160deg,var(--paper-2),var(--paper-3));overflow:hidden}
.card__media img{width:100%;height:100%;object-fit:contain;padding:9%;transition:transform .6s var(--ease-out)}
.card:hover .card__media img{transform:scale(1.06)}
.card__badge{
  position:absolute;top:14px;left:14px;padding:5px 11px;border-radius:100px;background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ink-600);font-weight:600;border:1px solid rgba(10,14,19,.06);
}
.card__badge--brand{background:var(--brand);color:#fff;border-color:transparent}
.card__body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;gap:9px}
.card__model{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--brand);font-weight:600}
.card__title{font-size:17.5px;font-weight:700;letter-spacing:-.018em;line-height:1.3;color:var(--ink-900)}
.card__desc{font-size:13.8px;line-height:1.66;color:var(--ink-400);flex:1}
.card__meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:2px}
.chip{
  padding:4px 10px;border-radius:100px;background:var(--paper-2);border:1px solid var(--line-2);
  font-family:var(--font-mono);font-size:10.8px;color:var(--ink-500);letter-spacing:.02em;
}
.card__foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:15px;margin-top:auto;border-top:1px solid var(--line-2);
}
.card__price{font-family:var(--font-mono);font-size:12.5px;color:var(--ink-400)}
.card--flat{background:var(--paper-2);border-color:transparent}
.card--flat:hover{background:#fff}

/* 分类卡 */
.catcard{
  display:flex;flex-direction:column;gap:14px;padding:28px 26px;border-radius:var(--radius-lg);
  background:#fff;border:1px solid var(--line);transition:all .4s var(--ease-out);position:relative;overflow:hidden;
}
.catcard::after{
  content:"";position:absolute;inset:auto 0 0 0;height:3px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease-out);
}
.catcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.catcard:hover::after{transform:scaleX(1)}
.catcard__ic{
  width:46px;height:46px;border-radius:13px;background:var(--brand-soft);display:grid;place-items:center;
  color:var(--brand);transition:all .4s var(--ease-out);
}
.catcard__ic svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7}
.catcard:hover .catcard__ic{background:var(--brand);color:#fff;transform:rotate(-6deg) scale(1.06)}
.catcard__n{font-size:19px;font-weight:700;letter-spacing:-.02em;color:var(--ink-900)}
.catcard__en{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-300)}
.catcard__d{font-size:13.6px;line-height:1.68;color:var(--ink-400)}
.catcard__c{font-family:var(--font-mono);font-size:11.5px;color:var(--brand);font-weight:600;margin-top:auto}

/* 特色卡 */
.feat{padding:26px 0 0;border-top:2px solid var(--line);transition:border-color .4s}
.feat:hover{border-color:var(--brand)}
.feat__n{font-family:var(--font-mono);font-size:11.5px;color:var(--brand);letter-spacing:.1em;font-weight:600}
.feat__t{margin-top:14px;font-size:18px;font-weight:700;letter-spacing:-.02em;color:var(--ink-900)}
.feat__d{margin-top:9px;font-size:14px;line-height:1.7;color:var(--ink-400)}

/* ---------- 10. Spec table ---------- */
.spectable{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.spectable table{font-size:14px}
.spectable th,.spectable td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--line-2)}
.spectable th{
  background:var(--paper-2);font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ink-500);font-weight:600;
}
.spectable tr:last-child td{border-bottom:0}
.spectable td:first-child{color:var(--ink-500);width:34%;font-weight:500}
.spectable td:last-child{font-family:var(--font-mono);color:var(--ink-900);font-weight:600;font-size:13.4px}
.spectable tbody tr:hover{background:var(--paper-2)}

/* ---------- 11. Accordion ---------- */
.acc{border-top:1px solid var(--line)}
.acc__i{border-bottom:1px solid var(--line)}
.acc__q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:24px 0;text-align:left;font-size:16.5px;font-weight:650;letter-spacing:-.015em;color:var(--ink-900);
  transition:color .25s;
}
.acc__q:hover{color:var(--brand)}
.acc__q i{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;
  transition:all .35s var(--ease);position:relative;margin-top:2px;
}
.acc__q i::before,.acc__q i::after{content:"";position:absolute;background:var(--ink-500);transition:all .35s var(--ease)}
.acc__q i::before{width:11px;height:1.5px}
.acc__q i::after{width:1.5px;height:11px}
.acc__i.is-open .acc__q i{background:var(--brand);border-color:var(--brand);transform:rotate(90deg)}
.acc__i.is-open .acc__q i::before,.acc__i.is-open .acc__q i::after{background:#fff}
.acc__i.is-open .acc__q i::after{opacity:0}
.acc__a{max-height:0;overflow:hidden;transition:max-height .45s var(--ease-out)}
.acc__a p{padding:0 0 26px;font-size:14.8px;line-height:1.78;color:var(--ink-400);max-width:80ch}

/* ---------- 12. Tabs ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px}
.tab{
  padding:9px 18px;border-radius:100px;border:1px solid var(--line);font-size:14px;font-weight:600;
  color:var(--ink-500);transition:all .25s var(--ease);background:#fff;
}
.tab:hover{border-color:var(--ink-300);color:var(--ink-800)}
.tab.is-on{background:var(--ink-900);border-color:var(--ink-900);color:#fff}

/* ---------- 13. Steps ---------- */
.steps{counter-reset:s;display:grid;gap:0}
.step{
  display:grid;grid-template-columns:76px minmax(0,1fr);gap:24px;padding:30px 0;
  border-top:1px solid var(--line);transition:background .3s;
}
.step:hover{background:linear-gradient(90deg,var(--brand-soft),transparent 60%)}
.step__n{
  font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.08em;
  padding-top:3px;
}
.step__t{font-size:19px;font-weight:700;letter-spacing:-.02em;color:var(--ink-900)}
.step__d{margin-top:8px;font-size:14.4px;line-height:1.72;color:var(--ink-400);max-width:70ch}

/* ---------- 14. Media frame ---------- */
.frame{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--paper-2);
  border:1px solid var(--line);
}
.frame img{width:100%;height:100%;object-fit:cover}
.frame--pad img{object-fit:contain;padding:7%}
.frame__cap{
  position:absolute;left:16px;bottom:16px;padding:7px 14px;border-radius:100px;
  background:rgba(10,14,19,.72);backdrop-filter:blur(10px);color:#fff;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
}

/* 产品画廊 */
.gal{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:16px}
.gal__main{grid-row:span 2;aspect-ratio:1/1;display:grid;place-items:center;padding:6%}
.gal__th{aspect-ratio:1/1;display:grid;place-items:center;padding:8%;cursor:pointer;transition:border-color .3s}
.gal__th:hover{border-color:var(--brand)}
.gal__th.is-on{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}

/* ---------- 15. Stat band ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stats__i{background:#fff;padding:30px 26px}
.stats__i b{display:block;font-family:var(--font-mono);font-size:clamp(28px,3.4vw,42px);font-weight:700;letter-spacing:-.03em;color:var(--ink-900);line-height:1}
.stats__i span{display:block;margin-top:10px;font-size:13px;color:var(--ink-400);line-height:1.55}
.stats--ink{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.1)}
.stats--ink .stats__i{background:transparent}
.stats--ink .stats__i b{color:#fff}
.stats--ink .stats__i span{color:rgba(255,255,255,.55)}

/* ---------- 16. Callout ---------- */
.callout{
  padding:26px 28px;border-radius:var(--radius);background:var(--brand-soft);
  border-left:3px solid var(--brand);
}
.callout__t{font-size:15.5px;font-weight:700;color:var(--brand-700);letter-spacing:-.01em}
.callout__d{margin-top:8px;font-size:14px;line-height:1.72;color:var(--ink-500)}
.note{padding:22px 24px;border-radius:var(--radius);background:var(--paper-2);border:1px solid var(--line-2)}
.note__t{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-400);font-weight:600}
.note__d{margin-top:9px;font-size:14px;line-height:1.72;color:var(--ink-500)}

/* ---------- 17. List ---------- */
.ul{display:flex;flex-direction:column;gap:11px}
.ul li{position:relative;padding-left:24px;font-size:14.6px;line-height:1.7;color:var(--ink-500)}
.ul li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--brand);opacity:.75;
}
.ul--check li::before{
  content:"";width:14px;height:14px;border-radius:50%;background:var(--brand-soft);
  border:1.5px solid var(--brand);top:4px;
}
.ul--num{counter-reset:n;gap:14px}
.ul--num li{counter-increment:n;padding-left:34px}
.ul--num li::before{
  content:counter(n,decimal-leading-zero);width:auto;height:auto;background:none;border-radius:0;
  font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--brand);top:3px;opacity:1;
}

/* ---------- 18. Footer ---------- */
.ftr{background:var(--ink-950);color:#fff;padding-top:clamp(56px,7vw,88px)}
.ftr__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:clamp(28px,4vw,56px);padding-bottom:52px}
.ftr__t{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.4);font-weight:600;margin-bottom:18px}
.ftr__a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.7);transition:color .22s}
.ftr__a:hover{color:#fff}
.ftr__d{font-size:14px;line-height:1.75;color:rgba(255,255,255,.6);max-width:38ch}
.ftr__ct{margin-top:20px;display:flex;flex-direction:column;gap:11px}
.ftr__ct a{display:flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:14px;color:#fff;font-weight:600}
.ftr__ct a svg{width:15px;height:15px;fill:var(--brand);flex-shrink:0}
.ftr__ct span{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.6}
.ftr__ct span svg{width:15px;height:15px;fill:rgba(255,255,255,.35);flex-shrink:0;margin-top:3px}
.ftr__bot{
  border-top:1px solid rgba(255,255,255,.1);padding-block:26px;display:flex;justify-content:space-between;
  align-items:center;gap:20px;flex-wrap:wrap;font-size:12.6px;color:rgba(255,255,255,.42);
}
.ftr__bot a{color:rgba(255,255,255,.62)}
.ftr__bot a:hover{color:#fff}
.ftr__links{display:flex;gap:20px;flex-wrap:wrap}

/* ---------- 19. Breadcrumb ---------- */
.crumb{display:flex;align-items:center;gap:9px;font-size:12.6px;color:var(--ink-300);flex-wrap:wrap}
.crumb a{color:var(--ink-400);transition:color .2s}
.crumb a:hover{color:var(--brand)}
.crumb i{font-style:normal;opacity:.45}
.sec--ink .crumb,.hero .crumb{color:rgba(255,255,255,.45)}
.hero .crumb a{color:rgba(255,255,255,.68)}
.hero .crumb a:hover{color:#fff}

/* ---------- 20. Reveal ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
.rv.is-in{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}
.rv-d4{transition-delay:.32s}.rv-d5{transition-delay:.4s}.rv-d6{transition-delay:.48s}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .marq__t{animation:none}
}

/* ---------- 21. Misc ---------- */
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  padding:5px 12px;border-radius:100px;border:1px solid var(--line);background:#fff;
  font-size:12.4px;color:var(--ink-500);
}
.sec--ink .tag{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);color:rgba(255,255,255,.72)}
.hr{height:1px;background:var(--line);border:0;margin:0}
.kv{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 20px;font-size:14px}
.kv dt{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-400);padding-top:3px}
.kv dd{margin:0;color:var(--ink-800);font-weight:550}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:52px}
.pager a{
  padding:22px 24px;border:1px solid var(--line);border-radius:var(--radius);transition:all .3s var(--ease);background:#fff;
}
.pager a:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow)}
.pager__l{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-300)}
.pager__t{margin-top:7px;font-size:15.5px;font-weight:650;color:var(--ink-900);letter-spacing:-.015em}
.pager a:last-child{text-align:right}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.anchor-nav{
  position:sticky;top:74px;z-index:120;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-2);
}
.anchor-nav__in{display:flex;gap:4px;overflow-x:auto;padding:11px 0;scrollbar-width:none}
.anchor-nav__in::-webkit-scrollbar{display:none}
.anchor-nav a{
  padding:8px 15px;border-radius:100px;font-size:13.6px;font-weight:600;color:var(--ink-500);white-space:nowrap;
  transition:all .22s;
}
.anchor-nav a:hover{background:var(--paper-2);color:var(--ink-900)}
.anchor-nav a.is-on{background:var(--ink-900);color:#fff}
.grid-bg{
  background-image:linear-gradient(var(--line-2) 1px,transparent 1px),linear-gradient(90deg,var(--line-2) 1px,transparent 1px);
  background-size:64px 64px;
}

/* 应用行业卡 */
.indcard{
  position:relative;padding:26px 24px;border-radius:var(--radius);border:1px solid var(--line);background:#fff;
  transition:all .38s var(--ease-out);overflow:hidden;display:block;
}
.indcard:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
.indcard__n{font-size:17px;font-weight:700;letter-spacing:-.02em;color:var(--ink-900)}
.indcard__d{margin-top:9px;font-size:13.5px;line-height:1.68;color:var(--ink-400)}
.indcard__f{margin-top:16px;font-family:var(--font-mono);font-size:11px;color:var(--brand);letter-spacing:.04em}

/* 配件行 */
.partrow{
  display:grid;grid-template-columns:52px minmax(0,1.6fr) minmax(0,1fr) auto;gap:20px;align-items:center;
  padding:20px 0;border-bottom:1px solid var(--line-2);transition:background .25s;
}
.partrow:hover{background:var(--paper-2)}
.partrow__ic{
  width:44px;height:44px;border-radius:12px;background:var(--paper-2);display:grid;place-items:center;
  font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--brand);border:1px solid var(--line-2);
}
.partrow__t{font-size:15.6px;font-weight:650;letter-spacing:-.015em;color:var(--ink-900)}
.partrow__p{font-family:var(--font-mono);font-size:11.6px;color:var(--ink-400);margin-top:4px;letter-spacing:.01em}
.partrow__m{font-size:13.2px;color:var(--ink-400)}

/* 搜索 */
.searchbox{
  display:flex;align-items:center;gap:12px;padding:15px 22px;border-radius:100px;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-xs);
}
.searchbox input{flex:1;border:0;outline:0;font-size:15px;font-family:inherit;background:none;color:var(--ink-900)}
.searchbox svg{width:17px;height:17px;stroke:var(--ink-300);fill:none;stroke-width:2}

/* CTA 带 */
.cta-band{
  position:relative;border-radius:var(--radius-xl);overflow:hidden;background:var(--ink-900);color:#fff;
  padding:clamp(40px,5vw,72px);isolation:isolate;
}
.cta-band__bg{position:absolute;inset:0;z-index:-1;opacity:.22}
.cta-band__bg img{width:100%;height:100%;object-fit:cover}
.cta-band::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(80% 120% at 85% 10%,rgba(216,35,42,.32),transparent 62%),linear-gradient(180deg,rgba(10,14,19,.55),rgba(10,14,19,.88));
}

/* 型号表 */
.modeltable{font-size:13.6px}
.modeltable th,.modeltable td{padding:12px 16px;border-bottom:1px solid var(--line-2);text-align:left}
.modeltable th{
  background:var(--ink-900);color:#fff;font-family:var(--font-mono);font-size:10.8px;letter-spacing:.08em;
  text-transform:uppercase;font-weight:600;position:sticky;top:74px;
}
.modeltable td{font-family:var(--font-mono);font-size:12.8px;color:var(--ink-600)}
.modeltable td:first-child{font-weight:700;color:var(--ink-900)}
.modeltable tbody tr:hover{background:var(--paper-2)}

/* 时间线 */
.tl{position:relative;padding-left:34px}
.tl::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;background:var(--line)}
.tl__i{position:relative;padding-bottom:34px}
.tl__i:last-child{padding-bottom:0}
.tl__i::before{
  content:"";position:absolute;left:-31px;top:5px;width:11px;height:11px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);
}
.tl__y{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--brand);letter-spacing:.06em}
.tl__t{margin-top:7px;font-size:16.5px;font-weight:700;letter-spacing:-.018em;color:var(--ink-900)}
.tl__d{margin-top:6px;font-size:14px;line-height:1.7;color:var(--ink-400)}

/* ---------- 22. Responsive ---------- */
@media (max-width:1080px){
  .nav{display:none}
  .burger{display:grid}
  .hdr__tel{display:none}
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ftr__grid{grid-template-columns:1fr 1fr}
  .hero__stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero__stat:nth-child(2){border-right:0}
  .hero__stat:nth-child(3),.hero__stat:nth-child(4){border-top:1px solid rgba(255,255,255,.09);padding-top:22px}
  .drop--wide{min-width:420px}
}
@media (max-width:860px){
  .g3,.g-auto,.g-auto-s{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split,.split--wide{grid-template-columns:1fr}
  .gal{grid-template-columns:1fr}
  .gal__main{grid-row:auto;aspect-ratio:4/3}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .partrow{grid-template-columns:44px minmax(0,1fr);gap:14px}
  .partrow__m,.partrow .btn{grid-column:2}
}
@media (max-width:620px){
  .g2,.g3,.g4,.g-auto,.g-auto-s{grid-template-columns:1fr}
  .hero__stats{grid-template-columns:1fr}
  .hero__stat{border-right:0;padding-inline:0}
  .stats{grid-template-columns:1fr}
  .ftr__grid{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  .pager a:last-child{text-align:left}
  .step{grid-template-columns:1fr;gap:8px}
  .drop--wide{min-width:auto}
}
@media print{.hdr,.ftr,.cta-band,.anchor-nav{display:none}}