/* COMBOND — static rebuild, alucosun-inspired design language */

/* ---------- fonts (self-hosted, same as alucosun) ---------- */
@font-face { font-family: "Barlow"; font-style: normal; font-weight: 400; font-display: swap; src: url("../fonts/barlow-400.woff2") format("woff2"); }
@font-face { font-family: "Barlow"; font-style: normal; font-weight: 500; font-display: swap; src: url("../fonts/barlow-500.woff2") format("woff2"); }
@font-face { font-family: "Barlow"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/barlow-600.woff2") format("woff2"); }
@font-face { font-family: "Barlow"; font-style: normal; font-weight: 700; font-display: swap; src: url("../fonts/barlow-700.woff2") format("woff2"); }
@font-face { font-family: "Barlow Condensed"; font-style: normal; font-weight: 500; font-display: swap; src: url("../fonts/barlow-condensed-500.woff2") format("woff2"); }
@font-face { font-family: "Barlow Condensed"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/barlow-condensed-600.woff2") format("woff2"); }
@font-face { font-family: "Barlow Condensed"; font-style: normal; font-weight: 700; font-display: swap; src: url("../fonts/barlow-condensed-700.woff2") format("woff2"); }

:root {
  --navy-900: #081527;
  --navy-800: #0a1b2e;
  --navy-700: #0f2a47;
  --navy-600: #143a5f;
  --blue: #1e56a8;
  --blue-light: #3d7bd9;
  --ink: #16232f;
  --gray: #5b6b7a;
  --line: #e3e8ee;
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --radius: 6px;
  --maxw: 1180px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Barlow", "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 { font-family: "Barlow Condensed", "Barlow", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif; font-weight: 600; letter-spacing: .005em; }
.stat .num { font-family: "Barlow Condensed", "Barlow", sans-serif; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .25s, box-shadow .25s;
}
.site-header.scrolled { background: #fff; box-shadow: 0 1px 0 var(--line); }
.header-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand img { height: 44px; width: auto; }
.site-header:not(.scrolled) .brand img.logo-dark-bg { display: block; }
.site-header:not(.scrolled) .brand img.logo-light-bg { display: none; }
.site-header.scrolled .brand img.logo-dark-bg { display: none; }
.site-header.scrolled .brand img.logo-light-bg { display: block; }

.main-nav ul { display: flex; gap: 6px; align-items: center; }
.main-nav a.nav-link {
  display: block; padding: 10px 16px; font-size: 15px; font-weight: 500;
  letter-spacing: .02em; color: #fff; text-transform: uppercase; border-radius: 4px;
}
.site-header.scrolled .main-nav a.nav-link { color: var(--ink); }
.main-nav a.nav-link:hover { color: var(--blue-light); }
.site-header.scrolled .main-nav a.nav-link:hover { color: var(--blue); }
.main-nav a.nav-link.active { color: var(--blue-light); }
.site-header.scrolled .main-nav a.nav-link.active { color: var(--blue); }

.has-dropdown { position: relative; }
.dropdown {
  position: absolute; top: 100%; left: 8px; min-width: 250px;
  background: #fff; border-radius: var(--radius); box-shadow: 0 12px 32px rgba(8,21,39,.16);
  padding: 8px; opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: .2s;
}
.has-dropdown:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a {
  display: block; padding: 10px 14px; font-size: 14px; color: var(--ink) !important;
  border-radius: 4px; text-transform: none;
}
.dropdown a:hover { background: var(--bg-soft); color: var(--blue) !important; }
.dropdown a small { display: block; color: var(--gray); font-size: 12px; }

.header-contact { text-align: right; color: #fff; line-height: 1.3; }
.site-header.scrolled .header-contact { color: var(--ink); }
.header-contact .label { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; opacity: .7; }
.header-contact .num { font-size: 15px; font-weight: 700; white-space: nowrap; }

.lang-link {
  font-size: 13px; font-weight: 600; letter-spacing: .04em; white-space: nowrap;
  color: rgba(255,255,255,.85); border: 1px solid rgba(255,255,255,.45);
  padding: 6px 14px; border-radius: 3px; transition: .2s;
}
.lang-link:hover { color: #fff; border-color: #fff; }
.site-header.scrolled .lang-link { color: var(--ink); border-color: #c4cdd6; }
.site-header.scrolled .lang-link:hover { color: var(--blue); border-color: var(--blue); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; transition: .2s; }
.site-header.scrolled .nav-toggle span { background: var(--ink); }

/* ---------- hero ---------- */
.hero { position: relative; height: 92vh; min-height: 620px; background: var(--navy-900); overflow: hidden; }
.hero-slide {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: 0; transition: opacity 1s ease;
}
.hero-slide.current { opacity: 1; }
.hero-slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(8,21,39,.68) 0%, rgba(8,21,39,.32) 55%, rgba(8,21,39,.05) 100%);
}
.hero-content {
  position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; flex-direction: column; justify-content: center; color: #fff;
}
.hero-kicker {
  font-size: 13px; letter-spacing: .35em; text-transform: uppercase; color: #9dc0ee; margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(38px, 5.4vw, 64px); line-height: 1.08; font-weight: 700; max-width: 720px;
  margin-bottom: 24px; letter-spacing: -.01em;
}
.hero p { font-size: clamp(16px, 1.6vw, 19px); color: #c4d3e4; max-width: 560px; margin-bottom: 40px; }
.btn {
  display: inline-block; padding: 14px 34px; font-size: 14px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase; border-radius: 3px; transition: .2s;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-light); }
.btn-ghost { border: 1px solid rgba(255,255,255,.5); color: #fff; margin-left: 14px; }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.hero-dots { position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%); z-index: 3; display: flex; gap: 10px; }
.hero-dots button {
  width: 34px; height: 3px; border: 0; background: rgba(255,255,255,.35); cursor: pointer; transition: .2s;
}
.hero-dots button.current { background: #fff; }

/* ---------- stat band ---------- */
.stat-band { background: var(--navy-800); color: #fff; padding: 54px 0; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat { text-align: center; padding: 0 12px; }
.stat .num { font-size: clamp(34px, 3.6vw, 48px); font-weight: 700; color: #fff; letter-spacing: -.01em; }
.stat .num em { font-style: normal; color: var(--blue-light); }
.stat .cap { margin-top: 6px; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: #8fa6bd; }
@media (min-width: 981px) { .stat + .stat { border-left: 1px solid rgba(255,255,255,.14); } }

/* ---------- section scaffolding ---------- */
.section { padding: 96px 0; }
.section.soft { background: var(--bg-soft); }
.section-head { max-width: 760px; margin: 0 auto 56px; text-align: center; }
.section-head .eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .28em;
  text-transform: uppercase; color: var(--blue); margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.15; letter-spacing: -.01em; }
.section-head p { margin-top: 16px; color: var(--gray); font-size: 16px; }

/* ---------- about strip ---------- */
.about-strip { display: grid; grid-template-columns: 1.18fr 1fr; gap: 56px; align-items: center; }
.about-strip .img-wrap img { border-radius: var(--radius); box-shadow: 0 24px 48px rgba(8,21,39,.18); }
.about-copy h2 { font-size: clamp(26px, 3vw, 36px); line-height: 1.2; margin-bottom: 20px; }
.about-copy p { color: var(--gray); margin-bottom: 16px; }
.about-points { margin: 24px 0 32px; display: grid; gap: 12px; }
.about-points li { display: flex; gap: 12px; align-items: baseline; font-size: 15px; }
.about-points li::before { content: "—"; color: var(--blue); font-weight: 700; }
.text-link {
  font-size: 14px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--blue);
}
.text-link:hover { color: var(--blue-light); }

/* ---------- product systems ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s;
}
.section.soft .product-card { border-color: transparent; box-shadow: 0 6px 24px rgba(8,21,39,.07); }
.product-card:hover { transform: translateY(-6px); box-shadow: 0 24px 48px rgba(8,21,39,.14); }
.product-card .thumb { aspect-ratio: 4 / 3; overflow: hidden; background: var(--navy-900); }
.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.product-card:hover .thumb img { transform: scale(1.04); }
.product-card .body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.product-tag {
  align-self: flex-start; font-size: 11px; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--blue); background: #e8f0fb; border-radius: 3px; padding: 4px 10px;
}
.product-card h3 { margin: 14px 0 10px; font-size: 21px; }
.product-card p { color: var(--gray); font-size: 14.5px; flex: 1; }
.product-card .spec-row {
  margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; font-size: 13px; color: var(--gray);
}
.product-card .spec-row b { color: var(--ink); font-weight: 600; }
.product-card .card-link { margin-top: 18px; font-size: 13px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--blue); }
.product-card:hover .card-link { color: var(--blue-light); }

/* ---------- advantages ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.adv-cell { background: #fff; padding: 36px 30px; position: relative; transition: transform .25s ease, box-shadow .25s ease; }
.adv-cell:hover { transform: translateY(-4px); box-shadow: 0 16px 32px rgba(8,21,39,.09); z-index: 1; }
.adv-cell::before { content: ""; display: block; width: 26px; height: 3px; border-radius: 2px; background: var(--blue); margin-bottom: 16px; }
.adv-cell .idx { font-size: 12px; font-weight: 700; color: var(--blue); letter-spacing: .16em; }
.adv-cell .ghost { position: absolute; top: 12px; right: 20px; font-family: "Barlow Condensed", sans-serif; font-weight: 700; font-size: 58px; line-height: 1; color: #e6edf6; letter-spacing: .02em; user-select: none; pointer-events: none; transition: color .25s ease; }
.adv-cell:hover .ghost { color: #d3e2f3; }
.adv-cell h4 { margin: 10px 0 8px; font-size: 17px; position: relative; }
.adv-cell p { font-size: 14px; color: var(--gray); position: relative; }

/* ---------- applications ---------- */
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.app-card { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4 / 3.4; }
.app-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.app-card:hover img { transform: scale(1.05); }
.app-card .overlay {
  position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end;
  padding: 26px; background: linear-gradient(180deg, transparent 35%, rgba(8,21,39,.88) 100%); color: #fff;
}
.app-card .overlay .k { font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: #9dc0ee; }
.app-card .overlay h3 { margin-top: 8px; font-size: 21px; }
.app-card .overlay p { margin-top: 6px; font-size: 13.5px; color: #c4d3e4; max-width: 420px; }

.sector-cloud { margin-top: 48px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.sector-cloud span {
  font-size: 13px; padding: 8px 18px; border: 1px solid var(--line); border-radius: 999px; color: var(--gray);
}

/* ---------- projects ---------- */
.proj-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.proj-card { border-radius: var(--radius); overflow: hidden; position: relative; aspect-ratio: 4/3; }
.proj-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.proj-card:hover img { transform: scale(1.05); }
.proj-card .overlay {
  position: absolute; inset: 0; padding: 22px; display: flex; flex-direction: column; justify-content: flex-end;
  background: linear-gradient(180deg, transparent 40%, rgba(8,21,39,.9) 100%); color: #fff;
}
.proj-card .overlay .k { font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: #9dc0ee; }
.proj-card .overlay h3 { font-size: 17px; margin-top: 6px; line-height: 1.35; }

/* ---------- certifications ---------- */
.cert-band { background: var(--navy-800); color: #fff; padding: 80px 0; }
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.12); }
.cert-cell { background: var(--navy-800); padding: 34px 26px 32px; }
.cert-cell .badge { display: block; width: 27px; height: 27px; color: #9dc0ee; margin-bottom: 14px; }
.cert-cell .c { font-size: 20px; font-weight: 700; color: #fff; }
.cert-cell .d { margin-top: 6px; font-size: 12.5px; color: #8fa6bd; line-height: 1.5; }

/* ---------- news ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: box-shadow .25s, transform .25s; }
.news-card:hover { transform: translateY(-4px); box-shadow: 0 18px 36px rgba(8,21,39,.1); }
.news-card .thumb { aspect-ratio: 16/9; overflow: hidden; }
.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-card .body { padding: 22px 24px 26px; }
.news-card .date { font-size: 12px; letter-spacing: .12em; color: var(--gray); text-transform: uppercase; }
.news-card h3 { margin: 10px 0 0; font-size: 16.5px; line-height: 1.45; }

/* ---------- CTA ---------- */
.cta-band { background: var(--navy-900); color: #fff; padding: 88px 0; text-align: center; }
.cta-band h2 { font-size: clamp(26px, 3.2vw, 38px); margin-bottom: 14px; }
.cta-band p { color: #9db1c5; margin-bottom: 34px; }

/* ---------- footer ---------- */
.site-footer { background: var(--navy-900); color: #8fa6bd; border-top: 1px solid rgba(255,255,255,.08); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 48px; padding: 72px 0 56px; }
.footer-grid h5 { color: #fff; font-size: 13px; letter-spacing: .18em; text-transform: uppercase; margin-bottom: 20px; }
.footer-grid ul li { margin-bottom: 12px; font-size: 14px; }
.footer-grid a:hover { color: #fff; }
.footer-brand img { height: 40px; margin-bottom: 18px; }
.footer-brand p { font-size: 14px; max-width: 320px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0; font-size: 12.5px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ---------- page hero (inner pages) ---------- */
.page-hero { position: relative; height: 46vh; min-height: 360px; background-size: cover; background-position: center; display: flex; align-items: flex-end; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(8,21,39,.55), rgba(8,21,39,.85)); }
.page-hero .inner { position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto; padding: 0 24px 56px; color: #fff; width: 100%; }
.page-hero .eyebrow { font-size: 12px; letter-spacing: .3em; text-transform: uppercase; color: #9dc0ee; }
.page-hero h1 { font-size: clamp(30px, 4vw, 46px); margin-top: 12px; }
.page-hero p { margin-top: 10px; color: #c4d3e4; max-width: 640px; }

/* ---------- product detail ---------- */
.pd-section { display: grid; grid-template-columns: 1.1fr 1fr; gap: 72px; align-items: center; }
.pd-section + .pd-section { margin-top: 110px; }
.pd-section.flip .pd-img { order: 2; }
.pd-img img { border-radius: var(--radius); box-shadow: 0 24px 48px rgba(8,21,39,.16); }
.pd-copy .eyebrow { font-size: 12px; font-weight: 700; letter-spacing: .28em; text-transform: uppercase; color: var(--blue); }
.pd-copy h2 { font-size: clamp(26px, 3vw, 36px); margin: 12px 0 18px; line-height: 1.2; }
.pd-copy p { color: var(--gray); }

.spec-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.spec-table th, .spec-table td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); font-size: 14.5px; vertical-align: top; }
.spec-table th { width: 34%; color: var(--gray); font-weight: 500; }
.spec-table td { font-weight: 600; }
.spec-table tr:first-child th, .spec-table tr:first-child td { border-top: 1px solid var(--line); }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; }
.contact-block h3 { font-size: 13px; letter-spacing: .22em; text-transform: uppercase; color: var(--blue); margin-bottom: 18px; }
.contact-block .big { font-size: 24px; font-weight: 700; margin-bottom: 28px; }
.contact-list li { display: grid; grid-template-columns: 130px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.contact-list li span:first-child { color: var(--gray); }

/* ---------- certificate cards (full document, no crop) ---------- */
.cert-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cert-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: 0 6px 24px rgba(8,21,39,.07); transition: transform .25s, box-shadow .25s;
}
.cert-card:hover { transform: translateY(-4px); box-shadow: 0 18px 36px rgba(8,21,39,.12); }
.cert-card img {
  width: 100%; height: 360px; object-fit: contain; background: #fff;
  border-bottom: 1px solid var(--line);
}
.cert-card .cap { padding: 14px 16px 16px; font-size: 13.5px; font-weight: 600; color: var(--ink); line-height: 1.45; }
.cert-card .cap small { display: block; font-weight: 500; color: var(--gray); font-size: 12px; margin-top: 2px; }

@media (max-width: 980px) { .cert-row { grid-template-columns: 1fr 1fr; } }
@media (max-width: 680px) { .cert-row { grid-template-columns: 1fr; } }

/* ---------- article page ---------- */
.article { max-width: 780px; margin: 0 auto; }
.article .meta { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--gray); margin-bottom: 28px; }
.article .meta b { color: var(--blue); }
.article-hero { border-radius: var(--radius); overflow: hidden; margin-bottom: 40px; }
.article-hero img { width: 100%; aspect-ratio: 16/8; object-fit: cover; }
.article-body p { color: #3c4a58; margin-bottom: 20px; font-size: 16px; line-height: 1.85; }
.article-body h2 { font-size: 22px; margin: 40px 0 16px; }
.article-body ul { margin: 0 0 20px 22px; list-style: disc; color: #3c4a58; }
.article-body ul li { margin-bottom: 10px; font-size: 15.5px; line-height: 1.75; }
.article-footer { margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-list details {
  border: 1px solid var(--line); border-radius: var(--radius); background: #fff;
  margin-bottom: 14px; overflow: hidden;
}
.faq-list summary {
  cursor: pointer; list-style: none; padding: 20px 56px 20px 24px;
  font-weight: 600; font-size: 16px; position: relative;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
  font-size: 22px; font-weight: 400; color: var(--blue); transition: transform .2s;
}
.faq-list details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-list .faq-a { padding: 0 24px 22px; color: var(--gray); font-size: 15px; line-height: 1.8; }
.faq-cta { text-align: center; margin-top: 40px; color: var(--gray); font-size: 14.5px; }

/* color center */
.color-series { margin-bottom: 72px; }.color-series h3 { font-size: 22px; margin-bottom: 8px; }
.color-series .sub { color: var(--gray); font-size: 14.5px; margin-bottom: 24px; }
.swatch-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.swatch { aspect-ratio: 1; border-radius: var(--radius); border: 1px solid var(--line); position: relative; overflow: hidden; }
.swatch .name { position: absolute; inset: auto 0 0 0; padding: 8px 12px; font-size: 12px; color: #fff; background: linear-gradient(transparent, rgba(0,0,0,.65)); }
.color-pending { background: var(--bg-soft); border: 1px dashed #c8d2dc; border-radius: var(--radius); padding: 48px 32px; text-align: center; color: var(--gray); }

/* responsive */
@media (max-width: 980px) {
  .stat-grid, .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid, .app-grid, .proj-grid, .news-grid, .adv-grid { grid-template-columns: 1fr 1fr; }
  .about-strip, .pd-section, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .pd-section.flip .pd-img { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .header-contact { display: none; }
  .adv-grid[style] { grid-template-columns: 1fr !important; }
}
@media (max-width: 680px) {
  .main-nav {
    position: fixed; inset: 76px 0 auto 0; background: #fff; box-shadow: 0 24px 48px rgba(8,21,39,.18);
    padding: 16px 24px 28px; display: none;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav a.nav-link { color: var(--ink) !important; padding: 14px 4px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; padding: 0 0 8px 16px; min-width: 0; }
  .nav-toggle { display: block; }
  .product-grid, .app-grid, .proj-grid, .news-grid, .adv-grid, .stat-grid, .cert-grid, .footer-grid { grid-template-columns: 1fr; }
  .hero { min-height: 540px; }
  .btn-ghost { margin-left: 0; margin-top: 12px; }
}