/* ============ Jinan Sinotruk Export — design system ============ */
:root{
  --ink:#0d1520; --ink-2:#3b4a5a; --ink-3:#6b7c8f;
  --line:#e2e8ef; --bg:#ffffff; --bg-2:#f4f7fa; --bg-3:#eef3f8;
  --brand:#c8102e;          /* deep red — heavy-industry, high contrast */
  --brand-dk:#8f0b21;
  --steel:#1e3a5f;          /* dark blue for secondary */
  --amber:#f0a500;
  --ok:#128a4b; --warn:#d98200;
  --r:14px; --r-sm:8px;
  --sh-1:0 1px 2px rgba(13,21,32,.06),0 4px 14px rgba(13,21,32,.06);
  --sh-2:0 10px 40px rgba(13,21,32,.12);
  --max:1240px; --gutter:clamp(16px,4vw,40px);
  --ff:"Inter","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,"Noto Sans SC","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--ff);color:var(--ink);background:var(--bg);
  line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:var(--steel);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(30px,5.4vw,52px);font-weight:800}
h2{font-size:clamp(24px,3.6vw,38px);font-weight:750}
h3{font-size:19px;font-weight:700}
p{margin:0 0 1em}
.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.wrap.narrow{max-width:820px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;background:#fff;padding:8px 12px;z-index:99;border-radius:var(--r-sm)}

/* ---- top bar ---- */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(1.6) blur(10px);border-bottom:1px solid var(--line)}
.topbar-in{display:flex;align-items:center;gap:18px;min-height:66px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-mark{width:38px;height:38px;flex:none;border-radius:10px;background:linear-gradient(140deg,var(--brand),var(--brand-dk));
  color:#fff;font-weight:800;display:grid;place-items:center;font-size:15px;letter-spacing:-.5px}
.brand-txt{display:flex;flex-direction:column;line-height:1.15}
.brand-txt strong{font-size:16px}
.brand-txt small{font-size:11px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.06em}
.nav{margin-left:auto;display:flex;align-items:center;gap:6px}
.nav a{color:var(--ink-2);font-size:14.5px;font-weight:600;padding:8px 12px;border-radius:var(--r-sm)}
.nav a:hover{background:var(--bg-3);color:var(--ink);text-decoration:none}
.langs{display:flex;align-items:center;gap:4px}
.langs button{border:1px solid var(--line);background:#fff;color:var(--ink-3);font:inherit;font-size:12px;
  font-weight:700;padding:5px 9px;border-radius:6px;cursor:pointer}
.langs button:hover{border-color:var(--ink-3);color:var(--ink)}
.langs button.on{background:var(--ink);border-color:var(--ink);color:#fff}
.burger{display:none}
.btn{display:inline-block;background:var(--brand);color:#fff;font-weight:700;font-size:15px;
  padding:13px 24px;border-radius:var(--r-sm);border:0;cursor:pointer;text-align:center}
.btn:hover{background:var(--brand-dk);text-decoration:none;color:#fff}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn.ghost:hover{background:var(--ink);color:#fff}
.btn.sm{padding:9px 16px;font-size:14px}

/* ---- hero ---- */
.hero{background:var(--steel);color:#fff;position:relative;overflow:hidden;isolation:isolate}
.hero .bg{position:absolute;inset:0;z-index:-2;background-size:cover;background-position:center}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(13,21,32,.94) 0%,rgba(30,58,95,.82) 45%,rgba(13,21,32,.55) 100%)}
.hero-in{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
  padding-block:clamp(52px,8vw,104px)}
.eyebrow{font-size:12.5px;text-transform:uppercase;letter-spacing:.11em;font-weight:700;
  color:var(--amber);margin:0 0 14px}
.hero h1{color:#fff;margin-bottom:18px}
.lead{font-size:clamp(16px,2vw,19px);color:#dce6f0;max-width:56ch;margin-bottom:26px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:34px}
.hero .btn.ghost{color:#fff;border-color:rgba(255,255,255,.7)}
.hero .btn.ghost:hover{background:#fff;color:var(--ink)}
.hero-stats{list-style:none;display:flex;gap:30px;margin:0;padding:0;flex-wrap:wrap}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats b{font-size:26px;font-weight:800;color:#fff}
.hero-stats span{font-size:12.5px;color:#a9bcd0;text-transform:uppercase;letter-spacing:.05em}

/* ---- ticker strip ---- */
.strip{background:var(--bg-3);border-bottom:1px solid var(--line)}
.strip-in{display:flex;gap:8px 28px;flex-wrap:wrap;padding-block:13px;font-size:13.5px;
  font-weight:600;color:var(--ink-2);justify-content:space-between}
.strip-in span{display:flex;align-items:center;gap:8px}
.strip-in span::before{content:"✓";color:var(--ok);font-weight:800}

/* ---- sections ---- */
section{padding-block:clamp(52px,7vw,86px)}
section.alt{background:var(--bg-2)}
.sub{color:var(--ink-3);font-size:17px;max-width:66ch;margin:-6px 0 34px}
.grid{display:grid;gap:22px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}

/* ---- cards ---- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;
  box-shadow:var(--sh-1);transition:transform .16s,box-shadow .16s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.card h3{margin-bottom:6px}
.card p{color:var(--ink-3);font-size:14.5px;margin:0}
.card .ph{aspect-ratio:16/10;border-radius:var(--r-sm);background:var(--bg-3) center/cover no-repeat;
  margin-bottom:15px;overflow:hidden;position:relative}
.card .ph img{width:100%;height:100%;object-fit:cover}
.tag{position:absolute;top:10px;left:10px;background:rgba(13,21,32,.82);color:#fff;font-size:11px;
  font-weight:700;padding:4px 9px;border-radius:5px;letter-spacing:.04em;text-transform:uppercase}
.card a.more{margin-top:14px;font-size:14px;font-weight:700;color:var(--brand)}

/* ---- product spec table ---- */
.specs{width:100%;border-collapse:collapse;font-size:14.5px;margin-top:6px}
.specs th,.specs td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line)}
.specs th{color:var(--ink-3);font-weight:600;width:44%;background:var(--bg-2)}

/* ---- steps ---- */
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px}
.step b{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;
  background:var(--ink);color:#fff;font-size:15px;margin-bottom:14px}

/* ---- about split ---- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split .img{border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:4/3;background-size:cover;background-position:center}
.figs{list-style:none;margin:22px 0 0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.figs li{border-left:3px solid var(--brand);padding-left:14px}
.figs b{display:block;font-size:22px;font-weight:800;line-height:1.2}
.figs span{font-size:13.5px;color:var(--ink-3)}

/* ---- faq ---- */
details{border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;padding:16px 20px;margin-bottom:12px}
details[open]{box-shadow:var(--sh-1)}
summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--brand);font-weight:800}
details[open] summary::after{content:"–"}
details p{color:var(--ink-2);font-size:15px;margin:12px 0 0}

/* ---- contact form ---- */
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh-1)}
.quote label{display:block;margin-bottom:16px;font-size:13.5px;font-weight:700;color:var(--ink-2)}
.quote input,.quote textarea,.quote select{width:100%;margin-top:6px;padding:11px 13px;font:inherit;
  font-weight:400;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg-2);color:var(--ink)}
.quote input:focus,.quote textarea:focus{outline:2px solid var(--brand);background:#fff}
.fine{font-size:12.5px;color:var(--ink-3);margin:12px 0 0}
.clist{list-style:none;padding:0;margin:22px 0 0}
.clist li{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--line);font-size:15px}
.clist li span{flex:none;width:96px;font-size:12.5px;text-transform:uppercase;letter-spacing:.05em;
  color:var(--ink-3);font-weight:700;padding-top:2px}
.clist em{font-style:normal;color:var(--ink-2)}

/* ---- banners ---- */
.band{background:linear-gradient(120deg,var(--brand),var(--brand-dk));color:#fff;text-align:center}
.band h2{color:#fff}
.band p{color:#ffe3e8;max-width:60ch;margin-inline:auto}
.band .btn{background:#fff;color:var(--brand-dk)}
.band .btn:hover{background:var(--ink);color:#fff}

/* ---- footer ---- */
footer{background:var(--ink);color:#9fb0c2;padding-block:44px;font-size:14px}
footer a{color:#dbe5ef}
.foot{display:grid;gap:18px}
.foot .cols{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.foot h4{color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px}
.foot ul{list-style:none;padding:0;margin:0}
.foot li{margin-bottom:7px}
.tm{font-size:12.5px;color:#7d8fa1;max-width:92ch;line-height:1.6}
.copy{font-size:12.5px;color:#7d8fa1;border-top:1px solid #24313f;padding-top:16px}

/* ---- breadcrumb / page header ---- */
.phead{background:var(--bg-2);border-bottom:1px solid var(--line);padding-block:34px}
.crumbs{font-size:13px;color:var(--ink-3);margin-bottom:8px}
.crumbs a{color:var(--ink-3)}
.phead p{color:var(--ink-3);max-width:70ch;margin:0}

/* ---- pagination / chips ---- */
.chips{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:26px}
.chip{border:1px solid var(--line);background:#fff;border-radius:20px;padding:7px 15px;
  font-size:13.5px;font-weight:600;color:var(--ink-2)}
.chip.on,.chip:hover{background:var(--ink);color:#fff;border-color:var(--ink);text-decoration:none}

/* ---- responsive ---- */
@media (max-width:1040px){.g4{grid-template-columns:repeat(2,1fr)}.foot .cols{grid-template-columns:repeat(2,1fr)}}
@media (max-width:900px){
  .hero-in,.split,.two,.g3,.g2{grid-template-columns:1fr}
  .hero-in{gap:34px}
  .split .img{order:-1}
  .nav{position:fixed;inset:66px 0 auto;background:#fff;flex-direction:column;align-items:stretch;
    padding:10px var(--gutter) 18px;border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
    display:none;margin-left:0}
  .nav.open{display:flex}
  .nav a{padding:12px 4px;border-bottom:1px solid var(--line)}
  .burger{display:block;font-size:19px;padding:4px 10px}
}
@media (max-width:620px){.g4{grid-template-columns:1fr}.strip-in{gap:6px 18px}
  .figs{grid-template-columns:1fr}.foot .cols{grid-template-columns:1fr}
  .brand-txt small{display:none}.hero-stats{gap:18px}}
@media print{.topbar,footer,.quote{display:none}}

/* ---- v2 additions (dir-based pages, real product grid) ---- */
.langs a{border:1px solid var(--line);background:#fff;color:var(--ink-3);font-size:12px;
  font-weight:700;padding:5px 9px;border-radius:6px;text-decoration:none}
.langs a:hover{border-color:var(--ink-3);color:var(--ink)}
.langs a.on{background:var(--ink);border-color:var(--ink);color:#fff}
.hero-card{background:rgba(13,21,32,.55);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r);padding:20px 22px;backdrop-filter:blur(4px)}
.hero-card h2{font-size:13px;text-transform:uppercase;letter-spacing:.09em;color:#a9bcd0;margin-bottom:8px}
a.hc-row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;
  border-bottom:1px solid rgba(255,255,255,.1);color:#fff;font-size:14.5px;font-weight:600}
a.hc-row:hover{text-decoration:none;color:var(--amber)}
a.hc-row span{color:#8fa6bd;font-variant-numeric:tabular-nums}
.card h3 a{color:inherit}
.card h3 a:hover{color:var(--brand);text-decoration:none}
.mrow{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px}
.pdf{font-size:12.5px;color:var(--ink-3)}
.date{font-size:12.5px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.05em;margin:0 0 6px}
.plist{list-style:none;padding:0;margin:10px 0 0;font-size:13.5px;color:var(--ink-2)}
.plist li{padding:4px 0;border-bottom:1px dashed var(--line);display:flex;gap:8px}
.plist code{background:var(--bg-3);border-radius:4px;padding:1px 6px;font-size:12px;color:var(--steel);flex:none}
.card.model .ph{aspect-ratio:4/3}
.card.wide .ph{aspect-ratio:16/10}
.tbl{width:100%;border-collapse:collapse;font-size:14.5px}
.tbl th,.tbl td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{width:34%;color:var(--ink-3);font-weight:600;background:var(--bg-2)}
.pager{display:flex;gap:10px;justify-content:center;margin-top:30px;flex-wrap:wrap}
.pager a,.pager span{border:1px solid var(--line);border-radius:var(--r-sm);padding:8px 14px;font-size:14px;font-weight:600}
.pager .cur{background:var(--ink);color:#fff;border-color:var(--ink)}
.rel{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media (max-width:900px){.rel{grid-template-columns:repeat(2,1fr)}}
.two-col{columns:2;column-gap:34px}
@media (max-width:700px){.two-col{columns:1}}
.note{font-size:12.5px;color:var(--ink-3);margin-top:10px}
.grid.g6{grid-template-columns:repeat(6,1fr)}
@media (max-width:1100px){.grid.g6{grid-template-columns:repeat(3,1fr)}}

/* ---- v3 component styles used by generator ---- */
.phead h1{margin-bottom:6px}
.phead .crumbs{margin-bottom:10px}
.phead p{color:var(--ink-3);max-width:74ch;margin:0}
h2 .count,h2 small.count{font-size:13px;font-weight:600;color:var(--ink-3);
  background:var(--bg-3);border-radius:12px;padding:2px 10px;vertical-align:middle;margin-left:8px}
.detail-img{border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-2);background:var(--bg-2)}
.detail-img img{width:100%;height:100%;object-fit:cover}
.card.part{padding:14px}
.card.part .ph{aspect-ratio:1/1;margin-bottom:10px}
.card.part code{display:block;font-size:12px;color:var(--steel);background:var(--bg-3);
  border-radius:5px;padding:2px 7px;margin-bottom:6px;width:fit-content}
.card.part h3{font-size:14.5px;font-weight:600;line-height:1.35;margin:0}
.tbl.parts td{padding:8px 12px}
.tbl.parts td:nth-child(1){width:150px}
.tbl.parts td:nth-child(3){width:76px}
.tbl.parts .thumb img{width:64px;height:64px;object-fit:cover;border-radius:6px;background:var(--bg-2)}
.tm-block{background:var(--bg-2);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:var(--r-sm);padding:20px 22px;font-size:14.5px;color:var(--ink-2)}
.step h3{font-size:16px}
.step p{font-size:14px;color:var(--ink-3);margin:0}
a.skip:focus{outline:2px solid var(--brand)}