/* ============================================================
   Admixor Site v2 — design tokens & components
   Industrial B2B · light theme · navy + safety orange
   ============================================================ */
:root {
  --navy-900: #0B1F33;
  --navy-800: #0E2A47;
  --navy-700: #123B66;
  --navy-600: #1B4E85;
  --orange: #E8630A;
  --orange-dark: #C4520A;
  --orange-soft: #FDF0E6;
  --bg: #F6F8FB;
  --card: #FFFFFF;
  --line: #E3E9F1;
  --text: #1E2A38;
  --muted: #5B6B7C;
  --ok: #1B8A5A;
  --radius: 14px;
  --shadow: 0 8px 28px rgba(11, 31, 51, 0.08);
  --shadow-hover: 0 14px 36px rgba(11, 31, 51, 0.14);
  --wrap: 1180px;
  --font: "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.65; font-size: 16px; }
img { max-width: 100%; display: block; }
a { color: var(--navy-600); text-decoration: none; }
a:hover { color: var(--orange); }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

h1, h2, h3, h4 { line-height: 1.25; color: var(--navy-900); font-weight: 700; }
h1 { font-size: clamp(30px, 4.2vw, 46px); }
h2 { font-size: clamp(24px, 3vw, 34px); }
h3 { font-size: 19px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header.scrolled { box-shadow: 0 4px 18px rgba(11,31,51,0.08); }
.header-in { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo { display: flex; align-items: baseline; gap: 8px; font-weight: 800; font-size: 21px; color: var(--navy-900); letter-spacing: 0.2px; }
.logo b { color: var(--orange); }
.logo small { font-size: 11px; font-weight: 600; color: var(--muted); letter-spacing: 1.5px; text-transform: uppercase; }
.main-nav { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.main-nav a { padding: 8px 14px; border-radius: 8px; font-weight: 600; font-size: 15px; color: var(--text); }
.main-nav a:hover { background: var(--bg); color: var(--navy-700); }
.main-nav a.active { color: var(--orange); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; border-radius: 10px; font-weight: 700; font-size: 15px; cursor: pointer; border: none; transition: all .18s ease; }
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-dark); color: #fff; transform: translateY(-1px); }
.btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.55); }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); color: #fff; }
.btn-navy { background: var(--navy-800); color: #fff; }
.btn-navy:hover { background: var(--navy-700); color: #fff; }
.btn-ghost { background: transparent; color: var(--navy-700); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--navy-600); color: var(--navy-600); }
.lang-switch { display: inline-flex; align-items: center; gap: 2px; padding: 3px; border: 1.5px solid #0F766E; border-radius: 999px; background: #fff; }
.lang-switch .seg { padding: 5px 16px; border-radius: 999px; font-size: 13px; font-weight: 700; line-height: 1.2; min-width: 56px; text-align: center; display: inline-block; transition: background .15s, color .15s; }
.lang-switch .seg.on { background: #0F766E; color: #fff; cursor: default; }
.lang-switch .seg.off { color: var(--navy-700); text-decoration: none; }
.lang-switch .seg.off:hover { background: #E6F4F1; color: #0F766E; }
.nav-toggle { display: none; margin-left: auto; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2.5px; background: var(--navy-900); margin: 5px 0; border-radius: 2px; transition: .2s; }

/* ---------- hero / banner ---------- */
.hero {
  background:
    radial-gradient(900px 380px at 100% 0%, rgba(232, 99, 10, 0.07), transparent 60%),
    radial-gradient(700px 360px at 0% 100%, rgba(18, 59, 102, 0.06), transparent 55%),
    #ffffff;
  color: var(--text); padding: 88px 0 96px; position: relative; overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(11,31,51,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,31,51,0.04) 1px, transparent 1px);
  background-size: 44px 44px; pointer-events: none;
}
.hero-in { position: relative; max-width: 860px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2.2px; text-transform: uppercase; color: var(--orange); margin-bottom: 14px; }
.hero h1 { color: var(--navy-900); margin-bottom: 18px; }
.hero h1 .hl { color: var(--orange); }
.hero p.lead { font-size: 18px; color: var(--muted); max-width: 640px; margin-bottom: 30px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-ctas .btn-outline { color: var(--navy-700); border-color: var(--navy-600); background: #fff; }
.hero-ctas .btn-outline:hover { background: var(--navy-700); color: #fff; border-color: var(--navy-700); }
.hero-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 34px; }
.hero-badges span { font-size: 13px; font-weight: 600; color: var(--navy-700); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; background: #fff; }

/* ---------- stats strip ---------- */
.stats { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); }
.stat { background: #fff; text-align: center; padding: 30px 12px; }
.stat b { display: block; font-size: 30px; color: var(--orange); font-weight: 800; }
.stat span { font-size: 13.5px; color: var(--muted); }

/* ---------- generic section ---------- */
.section { padding: 78px 0; }
.section.alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 42px; }
.section-head h2 { margin-bottom: 12px; }
.section-head p { color: var(--muted); font-size: 16.5px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- solutions ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.sol-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; transition: all .2s ease; position: relative; overflow: hidden; }
.sol-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--orange); opacity: 0; transition: .2s; }
.sol-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.sol-card:hover::before { opacity: 1; }
.sol-num { font-size: 13px; font-weight: 800; color: var(--orange); letter-spacing: 1.5px; }
.sol-card h3 { margin: 8px 0 10px; }
.sol-card p { color: var(--muted); font-size: 15px; margin-bottom: 14px; }
.sol-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.sol-tags a, .chip { font-size: 12.5px; font-weight: 600; color: var(--navy-700); background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; }
.sol-tags a:hover { background: var(--orange-soft); border-color: var(--orange); color: var(--orange-dark); }

/* ---------- advantages ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.adv-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; transition: .2s; }
.adv-card:hover { box-shadow: var(--shadow); border-color: #C9D6E4; }
.adv-n { width: 44px; height: 44px; border-radius: 11px; background: var(--orange-soft); color: var(--orange-dark); font-weight: 800; font-size: 16px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.adv-card h3 { margin-bottom: 8px; font-size: 17px; }
.adv-card p { color: var(--muted); font-size: 14.5px; }

/* ---------- product cards ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.prod-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; gap: 10px; transition: .2s; }
.prod-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: #C9D6E4; }
.prod-cat { font-size: 12px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; color: var(--orange); }
.prod-card h3 { font-size: 17px; line-height: 1.4; }
.prod-card h3 a { color: var(--navy-900); }
.prod-card h3 a:hover { color: var(--orange); }
.prod-tagline { color: var(--muted); font-size: 14px; flex: 1; }
.prod-meta { display: flex; flex-wrap: wrap; gap: 7px; }
.prod-more { margin-top: 30px; text-align: center; }
.badge { display: inline-block; font-size: 11.5px; font-weight: 700; color: var(--ok); background: #E8F5EE; border-radius: 999px; padding: 3px 10px; margin-bottom: 6px; align-self: flex-start; }

/* ---------- industries ---------- */
.ind-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.ind-tile { background: linear-gradient(160deg, var(--navy-800), var(--navy-700)); color: #fff; border-radius: var(--radius); padding: 26px; transition: .2s; position: relative; overflow: hidden; }
.ind-tile:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.ind-tile::after { content: ""; position: absolute; right: -30px; bottom: -30px; width: 110px; height: 110px; border-radius: 50%; background: rgba(232, 99, 10, 0.16); }
.ind-tile h3 { color: #fff; font-size: 17px; margin-bottom: 8px; position: relative; z-index: 1; }
.ind-tile p { color: rgba(255,255,255,0.75); font-size: 14px; position: relative; z-index: 1; }
.ind-ico { width: 40px; height: 40px; margin-bottom: 14px; position: relative; z-index: 1; }
.ind-ico svg { width: 100%; height: 100%; stroke: var(--orange); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- cases ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; transition: .2s; }
.case-card:hover { box-shadow: var(--shadow); }
.case-scenario { font-size: 12.5px; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase; color: var(--orange); margin-bottom: 10px; }
.case-card h3 { font-size: 17.5px; margin-bottom: 14px; }
.case-row { margin-bottom: 10px; font-size: 14px; }
.case-row b { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--navy-600); margin-bottom: 3px; }
.case-row span { color: var(--muted); }
.case-result b { color: var(--ok); }
.case-prods { margin-top: auto; padding-top: 12px; display: flex; flex-wrap: wrap; gap: 7px; }

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(120deg, var(--navy-900), var(--navy-700)); color: #fff; padding: 64px 0; }
.cta-in { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-in h2 { color: #fff; margin-bottom: 8px; }
.cta-in p { color: rgba(255,255,255,0.78); max-width: 560px; }

/* ---------- products page ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }
.filter-btn { padding: 9px 20px; border-radius: 999px; border: 1.5px solid var(--line); background: #fff; font-weight: 600; font-size: 14px; color: var(--muted); cursor: pointer; transition: .15s; font-family: inherit; }
.filter-btn:hover { border-color: var(--navy-600); color: var(--navy-600); }
.filter-btn.active { background: var(--navy-800); border-color: var(--navy-800); color: #fff; }
.cat-block { margin-bottom: 52px; }
.cat-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 20px; border-bottom: 2px solid var(--navy-800); padding-bottom: 12px; }
.cat-head h2 { font-size: 22px; }
.cat-head span { color: var(--muted); font-size: 14px; }
.others-card { background: var(--card); border: 1px dashed #C9D6E4; border-radius: var(--radius); padding: 22px; transition: .2s; display: flex; flex-direction: column; gap: 8px; }
.others-card:hover { border-color: var(--orange); border-style: solid; box-shadow: var(--shadow); }
.others-card h3 { font-size: 16px; }
.others-card p { color: var(--muted); font-size: 13.5px; flex: 1; }
.others-card .link { font-weight: 700; font-size: 14px; color: var(--orange); }

/* ---------- product detail ---------- */
.crumb { font-size: 13.5px; color: var(--muted); padding: 18px 0 0; }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--orange); }
.pd-head { padding: 26px 0 34px; border-bottom: 1px solid var(--line); }
.pd-head h1 { font-size: clamp(26px, 3.4vw, 38px); margin: 10px 0; }
.pd-head .tagline { font-size: 17px; color: var(--muted); margin-bottom: 18px; }
.pd-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.pd-chips .chip { font-size: 13px; padding: 6px 14px; }
.pd-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.pd-layout { display: grid; grid-template-columns: 1fr 360px; gap: 40px; padding: 44px 0 70px; align-items: start; }
.pd-body h2 { font-size: 22px; margin: 34px 0 12px; }
.pd-body h2:first-child { margin-top: 0; }
.pd-body p { color: var(--text); margin-bottom: 12px; }
.pd-body ul { margin: 0 0 14px 20px; color: var(--text); }
.pd-body li { margin-bottom: 6px; }
.spec-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); font-size: 14.5px; }
.spec-table caption { text-align: left; font-weight: 700; padding: 0 0 10px; color: var(--navy-900); font-size: 15px; }
.spec-table th, .spec-table td { text-align: left; padding: 11px 16px; border-bottom: 1px solid var(--line); }
.spec-table th { width: 46%; color: var(--muted); font-weight: 600; background: #FBFCFE; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }
.pd-side { position: sticky; top: 92px; display: flex; flex-direction: column; gap: 18px; }
.side-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.side-card h3 { font-size: 15px; margin-bottom: 12px; }
.side-card ul { list-style: none; }
.side-card li { font-size: 14px; padding: 7px 0; border-bottom: 1px dashed var(--line); color: var(--muted); display: flex; justify-content: space-between; gap: 10px; }
.side-card li:last-child { border-bottom: none; }
.side-card li b { color: var(--text); font-weight: 600; text-align: right; }

/* ---------- about ---------- */
.about-lead { font-size: 19px; color: var(--muted); max-width: 800px; margin-bottom: 40px; }
.prose { max-width: 800px; }
.prose p { margin-bottom: 16px; color: var(--text); }
.timeline { border-left: 2.5px solid var(--orange); margin: 30px 0 10px 8px; padding-left: 28px; display: flex; flex-direction: column; gap: 22px; }
.tl-item { position: relative; }
.tl-item::before { content: ""; position: absolute; left: -35px; top: 6px; width: 13px; height: 13px; border-radius: 50%; background: var(--orange); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--orange); }
.tl-item b { color: var(--orange-dark); font-size: 14px; text-transform: uppercase; letter-spacing: 1px; display: block; }
.tl-item p { color: var(--text); font-size: 15px; }
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cert-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.cert-card b { color: var(--navy-800); display: block; margin-bottom: 4px; }
.cert-card span { color: var(--muted); font-size: 13.5px; }
.svc-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; margin-top: 20px; }
.svc-list li { list-style: none; padding: 10px 0 10px 30px; position: relative; border-bottom: 1px dashed var(--line); font-size: 15px; }
.svc-list li::before { content: ""; position: absolute; left: 4px; top: 16px; width: 9px; height: 9px; border-radius: 2px; background: var(--orange); transform: rotate(45deg); }

/* ---------- FAQ ---------- */
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px; overflow: hidden; }
.faq-item summary { cursor: pointer; padding: 18px 22px; font-weight: 700; color: var(--navy-900); list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 22px; color: var(--orange); font-weight: 400; flex-shrink: 0; transition: .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-a { padding: 0 22px 18px; color: var(--muted); font-size: 15px; }

/* ---------- contact ---------- */
.contact-layout { display: grid; grid-template-columns: 400px 1fr; gap: 40px; align-items: start; }
.info-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; margin-bottom: 18px; }
.info-card h3 { font-size: 15px; margin-bottom: 12px; color: var(--navy-800); }
.info-card p, .info-card a { font-size: 15px; color: var(--text); display: block; margin-bottom: 4px; }
.info-card a { font-weight: 600; color: var(--navy-600); }
.info-card a:hover { color: var(--orange); }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 13.5px; font-weight: 700; color: var(--navy-900); }
.form-field label i { color: var(--orange); font-style: normal; }
.form-field input, .form-field select, .form-field textarea {
  border: 1.5px solid var(--line); border-radius: 10px; padding: 11px 14px; font-size: 15px;
  font-family: inherit; background: #FBFCFE; color: var(--text); transition: .15s; width: 100%;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: none; border-color: var(--navy-600); background: #fff; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 14px; }
.form-ok { display: none; background: #E8F5EE; color: var(--ok); border-radius: 10px; padding: 14px 18px; font-weight: 600; margin-top: 16px; }

/* ---------- footer ---------- */
.site-footer { background: var(--navy-900); color: rgba(255,255,255,0.72); padding: 60px 0 0; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 9px; }
.site-footer a { color: rgba(255,255,255,0.72); }
.site-footer a:hover { color: var(--orange); }
.footer-about p { max-width: 320px; margin-bottom: 16px; }
.footer-logo { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 14px; display: block; }
.footer-logo b { color: var(--orange); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: rgba(255,255,255,0.45); }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .adv-grid, .prod-grid, .case-grid, .ind-grid, .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-grid { grid-template-columns: 1fr; }
  .pd-layout { grid-template-columns: 1fr; }
  .pd-side { position: static; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .main-nav { position: fixed; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 16px 24px 22px; gap: 4px; border-bottom: 1px solid var(--line); box-shadow: 0 18px 30px rgba(11,31,51,0.12); display: none; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 10px; }
  .main-nav .btn { margin-top: 10px; justify-content: center; }
  .nav-toggle { display: block; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid, .prod-grid, .case-grid, .ind-grid, .cert-grid, .svc-list, .form-grid { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 70px; }
  .section { padding: 56px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}