/* ============================================================
   TRUEORIGIN TRADE — supplier site stylesheet
   Industrial light theme · slate + safety orange
   ============================================================ */
:root{
  --ink:#0e1726;
  --ink-2:#334155;
  --muted:#64748b;
  --line:#e2e8f0;
  --paper:#ffffff;
  --wash:#f6f8fb;
  --wash-2:#eef2f7;
  --accent:#ea580c;
  --accent-d:#c2410c;
  --accent-soft:#fff1e7;
  --steel:#1e3a5f;
  --ok:#15803d;
  --radius:14px;
  --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.07);
  --maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--paper);line-height:1.6;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section.tight{padding:48px 0}
.section.wash{background:var(--wash)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
h1,h2,h3{line-height:1.2;font-weight:800;letter-spacing:-.01em}
h2.section-title{font-size:clamp(26px,3.4vw,38px);margin-bottom:14px}
.section-sub{color:var(--muted);max-width:720px;font-size:17px}
.center{text-align:center}
.center .section-sub{margin:0 auto}
.center .eyebrow{justify-content:center}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:10px;font-weight:700;font-size:15px;
  border:2px solid transparent;cursor:pointer;transition:.18s;
}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-d);transform:translateY(-1px)}
.btn.ghost{border-color:var(--ink);color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:#fff}
.btn.light{background:#fff;color:var(--ink)}
.btn.light:hover{background:var(--wash-2)}
.btn.sm{padding:9px 18px;font-size:13.5px;border-radius:8px}

/* ---------- header ---------- */
.topbar{background:var(--ink);color:#cbd5e1;font-size:12.5px}
.topbar .wrap{display:flex;justify-content:space-between;gap:16px;padding-top:8px;padding-bottom:8px}
.topbar b{color:#fff}
header.site{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:11px;font-weight:900;font-size:19px;letter-spacing:.02em}
.logo .mark{
  width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--accent),#f97316);
  display:grid;place-items:center;color:#fff;font-size:19px;box-shadow:0 4px 12px rgba(234,88,12,.35);
}
.logo small{display:block;font-size:10px;font-weight:600;letter-spacing:.22em;color:var(--muted);text-transform:uppercase}
nav.links{display:flex;gap:26px;font-size:14.5px;font-weight:600;color:var(--ink-2)}
nav.links a{padding:6px 0;border-bottom:2px solid transparent}
nav.links a:hover,nav.links a.active{color:var(--accent);border-color:var(--accent)}
.nav .btn{margin-left:8px}
.burger{display:none;background:none;border:0;font-size:24px;cursor:pointer;color:var(--ink)}

/* ---------- hero ---------- */
.hero{
  background:
    radial-gradient(1100px 500px at 85% -10%,rgba(234,88,12,.25),transparent 60%),
    linear-gradient(140deg,#0b1220 0%,#13233c 55%,#1e3a5f 100%);
  color:#fff;overflow:hidden;
}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding-top:84px;padding-bottom:84px}
.hero h1{font-size:clamp(32px,4.6vw,52px);margin-bottom:18px}
.hero h1 em{font-style:normal;color:#fb923c}
.hero p.lead{color:#b6c2d4;font-size:18px;max-width:560px;margin-bottom:30px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.badges{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.badge{
  border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:7px 15px;
  font-size:12.5px;color:#cbd5e1;background:rgba(255,255,255,.05);
}
.hero-art{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hero-art img{border-radius:16px;height:250px;width:100%;object-fit:cover;box-shadow:0 24px 60px rgba(0,0,0,.45)}
.hero-art img.tall{height:330px}
.hero-chip{
  position:absolute;left:-14px;bottom:-16px;background:#fff;color:var(--ink);
  border-radius:12px;padding:12px 18px;box-shadow:var(--shadow);font-size:13px;font-weight:700;
}
.hero-chip span{color:var(--accent)}

/* ---------- stats ---------- */
.stats{background:var(--ink);color:#fff}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-top:34px;padding-bottom:34px}
.stat b{font-size:30px;font-weight:900;color:#fb923c;display:block;line-height:1.1}
.stat span{font-size:13px;color:#94a3b8}

/* ---------- cards / grids ---------- */
.grid{display:grid;gap:22px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.cat-card{overflow:hidden;transition:.2s}
.cat-card:hover{transform:translateY(-4px)}
.cat-card img{height:190px;width:100%;object-fit:cover}
.cat-card .body{padding:20px}
.cat-card h3{font-size:18px;margin-bottom:6px}
.cat-card p{color:var(--muted);font-size:14px}
.cat-card .count{color:var(--accent);font-weight:800;font-size:13px}

.why{padding:26px}
.why .ico{
  width:46px;height:46px;border-radius:12px;background:var(--accent-soft);
  display:grid;place-items:center;font-size:22px;margin-bottom:14px;
}
.why h3{font-size:16.5px;margin-bottom:8px}
.why p{color:var(--muted);font-size:14.5px}

/* ---------- product cards ---------- */
.p-card{overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.p-card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(15,23,42,.12)}
.p-card .ph{background:var(--wash-2);position:relative}
.p-card .ph img{height:230px;width:100%;object-fit:contain;padding:16px;mix-blend-mode:multiply}
.p-card .tag{
  position:absolute;top:12px;left:12px;background:var(--ink);color:#fff;
  font-size:11px;font-weight:700;letter-spacing:.08em;padding:5px 11px;border-radius:999px;text-transform:uppercase;
}
.p-card .tag.hot{background:var(--accent)}
.p-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.p-card .sku{font-size:11.5px;color:var(--muted);letter-spacing:.08em}
.p-card h3{font-size:16.5px;line-height:1.35}
.p-card .meta{font-size:13px;color:var(--muted)}
.p-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:10px}
.p-card .price{font-weight:900;color:var(--accent);font-size:17px}
.p-card .price small{color:var(--muted);font-weight:600;font-size:11.5px}

/* ---------- filter chips ---------- */
.chips{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0 8px}
.chip{
  padding:9px 18px;border-radius:999px;border:1.5px solid var(--line);
  font-size:13.5px;font-weight:700;color:var(--ink-2);cursor:pointer;background:#fff;transition:.15s;
}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.active{background:var(--ink);border-color:var(--ink);color:#fff}

/* ---------- product detail ---------- */
.crumbs{font-size:13px;color:var(--muted);padding:22px 0 0}
.crumbs a:hover{color:var(--accent)}
.pd{display:grid;grid-template-columns:1fr 1fr;gap:44px;padding:34px 0 8px}
.pd .gallery .main{border:1px solid var(--line);border-radius:var(--radius);background:var(--wash-2);overflow:hidden}
.pd .gallery .main img{width:100%;height:440px;object-fit:contain;padding:22px;mix-blend-mode:multiply}
.pd h1{font-size:clamp(24px,3vw,34px);margin:6px 0 10px}
.pd .sku-line{color:var(--muted);font-size:13.5px;letter-spacing:.06em;margin-bottom:16px}
.pd .price-line{display:flex;align-items:baseline;gap:10px;margin-bottom:20px}
.pd .price-line .p{font-size:30px;font-weight:900;color:var(--accent)}
.pd .price-line .n{font-size:13px;color:var(--muted)}
.keypoints{margin:0 0 22px;display:grid;gap:9px}
.keypoints li{display:flex;gap:10px;font-size:15px;color:var(--ink-2)}
.keypoints li::before{content:"✓";color:var(--accent);font-weight:900}
.spec{width:100%;border-collapse:collapse;font-size:14.5px}
.spec th,.spec td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.spec th{color:var(--muted);font-weight:600;width:42%;background:var(--wash)}
.spec td{font-weight:600}
.tbl-wrap{overflow-x:auto}
.cta-band{background:linear-gradient(135deg,var(--ink),var(--steel));color:#fff;border-radius:var(--radius);padding:40px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-band h3{font-size:24px;margin-bottom:6px}
.cta-band p{color:#b6c2d4}

/* ---------- feature split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%;height:380px;object-fit:cover}
.check-list{display:grid;gap:12px;margin-top:22px}
.check-list li{display:flex;gap:12px;align-items:flex-start}
.check-list .b{color:var(--accent);font-weight:900}
.check-list b{display:block}
.check-list span{color:var(--muted);font-size:14.5px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:st}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative}
.step::before{
  counter-increment:st;content:"0" counter(st);
  font-size:40px;font-weight:900;color:var(--accent-soft);
  -webkit-text-stroke:1.5px var(--accent);position:absolute;top:14px;right:18px;opacity:.9;
}
.step h3{font-size:16px;margin-bottom:8px;position:relative;z-index:1}
.step p{color:var(--muted);font-size:14px;position:relative;z-index:1}

/* ---------- table ---------- */
.data{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.data th{background:var(--ink);color:#fff;text-align:left;padding:13px 16px;font-size:13px;letter-spacing:.05em}
.data td{padding:13px 16px;border-bottom:1px solid var(--line)}
.data tr:last-child td{border-bottom:0}
.data tr:nth-child(even) td{background:var(--wash)}

/* ---------- forms ---------- */
.form{display:grid;gap:16px}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form label{font-size:13.5px;font-weight:700;color:var(--ink-2);display:block;margin-bottom:6px}
.form input,.form select,.form textarea{
  width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;
  font:inherit;font-size:14.5px;background:#fff;transition:.15s;
}
.form input:focus,.form select:focus,.form textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(234,88,12,.12)}

/* ---------- faq ---------- */
.faq{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:0}
.faq summary{padding:18px 22px;font-weight:700;cursor:pointer;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:22px;color:var(--accent);font-size:22px;font-weight:900}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 22px 18px;color:var(--muted);font-size:14.5px}

/* ---------- footer ---------- */
footer.site{background:var(--ink);color:#94a3b8;margin-top:80px}
footer.site .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 40px}
footer.site h4{color:#fff;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:16px}
footer.site a:hover{color:#fb923c}
footer.site li{margin-bottom:9px;font-size:14px}
footer.site .brand p{font-size:14px;margin-top:12px;max-width:300px}
footer.site .legal{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:12.5px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- misc ---------- */
.note{background:var(--accent-soft);border:1px solid #fed7aa;border-radius:10px;padding:14px 18px;font-size:14px;color:#7c2d12}
.pill{display:inline-block;background:var(--wash-2);border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:700;color:var(--ink-2);margin:3px 4px 3px 0}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .hero .wrap{grid-template-columns:1fr;padding-top:56px;padding-bottom:56px}
  .hero-art{display:none}
  .stats .wrap{grid-template-columns:repeat(2,1fr)}
  .pd,.split{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  footer.site .cols{grid-template-columns:1fr 1fr}
  nav.links{
    display:none;position:absolute;top:72px;left:0;right:0;background:#fff;
    flex-direction:column;padding:18px 24px;border-bottom:1px solid var(--line);gap:14px;
  }
  nav.links.open{display:flex}
  .burger{display:block}
  .nav .btn{display:none}
}
@media (max-width:600px){
  .g3,.g4,.g2{grid-template-columns:1fr}
  .form .row{grid-template-columns:1fr}
  .topbar .wrap{justify-content:center}
}