/* =========================================================
   ZHOUNENG Cooling Tower — Industrial B2B design system
   prototype v0.1
   ========================================================= */

:root {
  /* palette */
  --ink:        #0a1926;
  --navy:       #0f2b47;
  --navy-2:     #143a5e;
  --steel:      #56697f;
  --slate:      #7d8fa3;
  --line:       #dfe6ee;
  --line-soft:  #edf2f7;
  --bg:         #f6f8fb;
  --white:      #ffffff;
  --accent:     #f2681f;
  --accent-2:   #ff8a45;
  --accent-dk:  #cf5112;
  --teal:       #1c7a86;

  /* type */
  --font: "Inter", "Segoe UI", "Helvetica Neue", Arial, "PingFang SC",
          "Microsoft YaHei", sans-serif;
  --mono: "JetBrains Mono", "Consolas", "SFMono-Regular", monospace;

  /* shape */
  --r-sm: 6px;
  --r:    10px;
  --r-lg: 16px;

  /* shadow */
  --sh-1: 0 1px 2px rgba(10, 25, 38, .06), 0 1px 3px rgba(10, 25, 38, .04);
  --sh-2: 0 4px 14px rgba(10, 25, 38, .08), 0 2px 6px rgba(10, 25, 38, .04);
  --sh-3: 0 18px 44px rgba(10, 25, 38, .14);

  /* layout */
  --wrap: 1200px;
  --pad: 28px;
  --header-h: 76px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: #24303c;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5 { margin: 0; line-height: 1.18; letter-spacing: -.02em; color: var(--ink); font-weight: 700; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- layout helpers ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }
.section { padding: 88px 0; }
.section--tight { padding: 64px 0; }
.section--grey { background: var(--bg); }
.section--dark { background: var(--ink); color: #c8d4e0; }
.section--dark h2, .section--dark h3 { color: #fff; }
.grid { display: grid; gap: 24px; }
.center { text-align: center; }

/* ---------- eyebrow / headings ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--accent);
}
.eyebrow::before {
  content: ""; width: 22px; height: 2px; background: var(--accent);
}
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }
.section-head h2 {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  margin-top: 14px;
}
.section-head p { margin-top: 16px; color: var(--steel); font-size: 1.0625rem; }

/* ---------- buttons ---------- */
.btn {
  --btn-bg: var(--accent);
  --btn-fg: #fff;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 26px; border-radius: var(--r-sm);
  background: var(--btn-bg); color: var(--btn-fg);
  font-weight: 600; font-size: .975rem; letter-spacing: .01em;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .16s ease, background .16s ease, box-shadow .16s ease;
}
.btn:hover { background: var(--accent-dk); transform: translateY(-1px); box-shadow: var(--sh-2); }
.btn--ghost {
  background: transparent; color: var(--ink);
  border-color: rgba(15, 43, 71, .22);
}
.btn--ghost:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn--light { background: #fff; color: var(--ink); }
.btn--light:hover { background: #f1f5f9; color: var(--ink); }
.btn--lg { padding: 17px 32px; font-size: 1.0125rem; }
.btn .arw { transition: transform .16s ease; }
.btn:hover .arw { transform: translateX(3px); }

/* ---------- topbar ---------- */
.topbar {
  background: var(--ink); color: #9fb1c4;
  font-size: .8125rem; letter-spacing: .01em;
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 42px; }
.topbar a:hover { color: #fff; }
.topbar__meta { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.topbar__meta span { display: inline-flex; align-items: center; gap: 7px; }
.topbar__meta svg { width: 14px; height: 14px; opacity: .8; }
.topbar__right { display: flex; align-items: center; gap: 18px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 28px; min-height: var(--header-h); }

.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand__mark { width: 38px; height: 38px; flex: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-weight: 800; font-size: 1.0625rem; letter-spacing: .12em; color: var(--ink); }
.brand__sub { font-size: .625rem; letter-spacing: .22em; text-transform: uppercase; color: var(--slate); }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  position: relative; padding: 10px 14px; border-radius: var(--r-sm);
  font-size: .9375rem; font-weight: 550; color: #35485c;
  transition: color .14s ease, background .14s ease;
}
.nav a:hover { color: var(--ink); background: var(--line-soft); }
.nav a[aria-current="page"] { color: var(--ink); }
.nav a[aria-current="page"]::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px;
  height: 2px; background: var(--accent); border-radius: 2px;
}
.header__cta { display: flex; align-items: center; gap: 12px; flex: none; }
.header__phone { display: flex; flex-direction: column; line-height: 1.2; }
.header__phone small { font-size: .6875rem; color: var(--slate); letter-spacing: .08em; text-transform: uppercase; }
.header__phone b { font-size: .9375rem; color: var(--ink); letter-spacing: .01em; }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line);
  background: #fff; border-radius: var(--r-sm); cursor: pointer;
  align-items: center; justify-content: center;
}

/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1000px 520px at 78% -8%, rgba(28, 122, 134, .30), transparent 62%),
    radial-gradient(760px 420px at 8% 108%, rgba(242, 104, 31, .16), transparent 60%),
    linear-gradient(155deg, #0a1926 0%, #0f2b47 52%, #123a5c 100%);
  color: #dbe5ef;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(120% 90% at 60% 20%, #000 25%, transparent 78%);
}
.hero .wrap { position: relative; padding-block: 92px 96px; }
.hero__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero h1 {
  color: #fff; font-size: clamp(2.15rem, 4.6vw, 3.55rem); line-height: 1.08;
  letter-spacing: -.03em; margin-top: 20px;
}
.hero h1 em { font-style: normal; color: var(--accent-2); }
.hero__lead { margin-top: 22px; max-width: 34em; color: #b9c8d8; font-size: 1.0625rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero__stats {
  display: flex; flex-wrap: wrap; gap: 0; margin-top: 44px;
  border-top: 1px solid rgba(255, 255, 255, .14); padding-top: 26px;
}
.hero__stats div { padding-right: 34px; margin-right: 34px; border-right: 1px solid rgba(255, 255, 255, .12); }
.hero__stats div:last-child { border: 0; margin: 0; padding: 0; }
.hero__stats b { display: block; font-size: 1.625rem; color: #fff; letter-spacing: -.02em; line-height: 1.1; }
.hero__stats span { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: #8fa4b9; }

.hero__art { position: relative; }
.hero__art svg { width: 100%; height: auto; filter: drop-shadow(0 30px 60px rgba(0, 0, 0, .45)); }
.hero__badge {
  position: absolute; bottom: -6px; left: -18px;
  background: rgba(10, 25, 38, .82); border: 1px solid rgba(255, 255, 255, .14);
  backdrop-filter: blur(8px);
  border-radius: var(--r); padding: 14px 18px; display: flex; gap: 14px; align-items: center;
}
.hero__badge b { color: #fff; font-size: .95rem; display: block; }
.hero__badge span { font-size: .75rem; color: #93a7bb; }
.hero__badge i {
  width: 38px; height: 38px; border-radius: 50%; flex: none;
  background: rgba(242, 104, 31, .16); color: var(--accent-2);
  display: grid; place-items: center; font-style: normal; font-size: 1rem;
}

/* ---------- logo strip ---------- */
.trust { background: #fff; border-bottom: 1px solid var(--line); }
.trust .wrap { display: flex; align-items: center; gap: 40px; padding-block: 22px; flex-wrap: wrap; }
.trust p { font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--slate); flex: none; }
.trust ul { display: flex; align-items: center; gap: 38px; flex-wrap: wrap; margin-left: auto; }
.trust li { font-weight: 700; font-size: .9375rem; letter-spacing: .04em; color: #7b8b9c; }

/* ---------- cards ---------- */
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--sh-3); border-color: #cfdae6; }
.card__media {
  position: relative; aspect-ratio: 4 / 3; overflow: hidden;
  background: linear-gradient(160deg, #e8eef5, #d5e0eb);
  display: grid; place-items: center;
}
.card__media svg { width: 74%; height: auto; opacity: .85; }
.card__media img { width: 100%; height: 100%; object-fit: cover; }
.card__tag {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: rgba(10, 25, 38, .78); color: #fff;
  font-size: .6875rem; letter-spacing: .1em; text-transform: uppercase;
  padding: 5px 9px; border-radius: 4px;
}
.card__body { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.card__body h3 { font-size: 1.0625rem; letter-spacing: -.01em; }
.card__body p { font-size: .9rem; color: var(--steel); }
.card__specs { display: flex; gap: 18px; margin-top: auto; padding-top: 14px; border-top: 1px dashed var(--line); }
.card__specs div { font-size: .75rem; color: var(--slate); }
.card__specs b { display: block; font-size: .875rem; color: var(--ink); font-weight: 650; }
.card__link { display: inline-flex; align-items: center; gap: 6px; font-size: .875rem; font-weight: 600; color: var(--accent); }
.card__link:hover { color: var(--accent-dk); }

.products-grid { grid-template-columns: repeat(3, 1fr); }

/* ---------- feature list ---------- */
.features { grid-template-columns: repeat(4, 1fr); }
.feature {
  padding: 30px 26px; border-radius: var(--r-lg);
  background: #fff; border: 1px solid var(--line);
  position: relative; overflow: hidden;
}
.feature::after {
  content: ""; position: absolute; left: 0; top: 0; width: 3px; height: 100%;
  background: linear-gradient(var(--accent), transparent);
  opacity: 0; transition: opacity .2s ease;
}
.feature:hover::after { opacity: 1; }
.feature__no { font-family: var(--mono); font-size: .75rem; color: var(--accent); letter-spacing: .1em; }
.feature h3 { font-size: 1.0625rem; margin: 12px 0 8px; }
.feature p { font-size: .9rem; color: var(--steel); }

/* ---------- industries ---------- */
.industries { grid-template-columns: repeat(6, 1fr); gap: 14px; }
.industry {
  border: 1px solid rgba(255, 255, 255, .12); border-radius: var(--r);
  padding: 20px 16px; text-align: center;
  background: rgba(255, 255, 255, .03);
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}
.industry:hover { background: rgba(255, 255, 255, .07); border-color: rgba(242, 104, 31, .5); transform: translateY(-3px); }
.industry svg { width: 26px; height: 26px; margin: 0 auto 12px; color: var(--accent-2); }
.industry b { display: block; font-size: .875rem; color: #e6eef6; font-weight: 550; }
.industry span { font-size: .72rem; color: #7e93a8; }

/* ---------- process ---------- */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
.step { position: relative; padding: 22px 26px 0 0; border-top: 1px solid var(--line); }
.step::before {
  counter-increment: step; content: "0" counter(step);
  font-family: var(--mono); font-size: 2rem; font-weight: 700;
  color: #c9d8e7; line-height: 1; display: block; margin-bottom: 14px;
}
.step h3 { font-size: 1rem; margin-bottom: 8px; }
.step p { font-size: .875rem; color: var(--steel); }
.step::after { display: none; }

/* ---------- stats band ---------- */
.stats { background: var(--navy); color: #fff; }
.stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; padding-block: 56px; }
.stat { text-align: center; border-right: 1px solid rgba(255, 255, 255, .12); }
.stat:last-child { border: 0; }
.stat b { display: block; font-size: clamp(1.9rem, 3vw, 2.6rem); letter-spacing: -.03em; line-height: 1; }
.stat b i { font-style: normal; color: var(--accent-2); }
.stat span { font-size: .8125rem; color: #a8bccf; letter-spacing: .06em; }

/* ---------- cta band ---------- */
.cta-band {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, #cf5112, #f2681f 55%, #ff8a45);
  color: #fff;
}
.cta-band::after {
  content: ""; position: absolute; right: -8%; top: -40%; width: 620px; height: 620px;
  border-radius: 50%; border: 1px solid rgba(255, 255, 255, .18);
}
.cta-band .wrap {
  position: relative; display: flex; align-items: center; justify-content: space-between;
  gap: 34px; padding-block: 54px; flex-wrap: wrap;
}
.cta-band h2 { color: #fff; font-size: clamp(1.5rem, 2.6vw, 2rem); }
.cta-band p { margin-top: 10px; color: rgba(255, 255, 255, .86); max-width: 46em; }
.cta-band .btn--light { flex: none; }

/* ---------- page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(160deg, #0a1926, #12395b);
  color: #c3d2e1; padding: 68px 0 62px; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(90% 120% at 20% 0%, #000 20%, transparent 75%);
}
.page-hero .wrap { position: relative; }
.page-hero h1 { color: #fff; font-size: clamp(1.9rem, 3.6vw, 2.85rem); margin-top: 16px; }
.page-hero p { margin-top: 16px; max-width: 44em; color: #a9bdd0; }
.crumbs { display: flex; gap: 8px; font-size: .8125rem; color: #7e93a8; }
.crumbs a:hover { color: #fff; }
.crumbs span { color: #4a6076; }

/* ---------- spec table ---------- */
.spec-table { border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: #fff; }
.spec-table caption {
  caption-side: top; text-align: left; padding: 16px 20px;
  font-size: .8125rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--steel); background: var(--bg); border-bottom: 1px solid var(--line);
}
.spec-table th, .spec-table td {
  padding: 13px 18px; font-size: .9375rem; text-align: left;
  border-bottom: 1px solid var(--line-soft);
}
.spec-table thead th {
  background: var(--navy); color: #dbe6f0; font-size: .75rem;
  letter-spacing: .08em; text-transform: uppercase; font-weight: 600;
  border-bottom: 0; white-space: nowrap;
}
.spec-table tbody tr:nth-child(even) { background: #fafcfe; }
.spec-table tbody tr:hover { background: #f2f7fc; }
.spec-table tbody th { font-weight: 600; color: var(--ink); width: 34%; }
.spec-table td { color: var(--steel); }
.spec-table .num { font-family: var(--mono); font-size: .875rem; color: var(--ink); text-align: right; }
.spec-table__scroll { overflow-x: auto; }

/* ---------- detail layout ---------- */
.detail { display: grid; grid-template-columns: 1.05fr .95fr; gap: 52px; align-items: start; }
.gallery { display: grid; gap: 12px; }
.gallery__main {
  aspect-ratio: 4 / 3; border-radius: var(--r-lg); overflow: hidden;
  background: linear-gradient(160deg, #e9eff6, #d3dfea);
  display: grid; place-items: center; border: 1px solid var(--line);
}
.gallery__main svg { width: 70%; opacity: .9; }
.gallery__thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.gallery__thumbs button {
  aspect-ratio: 1; border: 1px solid var(--line); border-radius: var(--r-sm);
  background: #f4f8fb; cursor: pointer; display: grid; place-items: center; padding: 8px;
}
.gallery__thumbs button[aria-selected="true"] { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(242, 104, 31, .18); }
.gallery__thumbs svg { width: 100%; opacity: .8; }

.detail__meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.chip {
  font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 999px; background: var(--line-soft);
  color: var(--steel); border: 1px solid var(--line);
}
.chip--accent { background: rgba(242, 104, 31, .1); border-color: rgba(242, 104, 31, .25); color: var(--accent-dk); }
.detail h1 { font-size: clamp(1.7rem, 3vw, 2.35rem); }
.detail__lead { margin-top: 16px; color: var(--steel); }
.keyfacts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; margin-top: 26px; }
.keyfacts div { background: #fff; padding: 14px 16px; }
.keyfacts dt { font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--slate); }
.keyfacts dd { margin: 4px 0 0; font-weight: 650; color: var(--ink); font-size: .9375rem; }
.detail__actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }

/* ---------- checklist ---------- */
.checklist { display: grid; gap: 12px; }
.checklist li { display: flex; gap: 12px; font-size: .9375rem; color: #33455a; }
.checklist li::before {
  content: "✓"; flex: none; width: 20px; height: 20px; border-radius: 50%;
  background: rgba(28, 122, 134, .12); color: var(--teal);
  display: grid; place-items: center; font-size: .72rem; font-weight: 700; margin-top: 3px;
}
.section--dark .checklist li { color: #b9c8d8; }
.section--dark .checklist li::before { background: rgba(242, 104, 31, .18); color: var(--accent-2); }

/* ---------- form ---------- */
.form-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 34px; box-shadow: var(--sh-2);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; margin-bottom: 18px; }
.field label { font-size: .8125rem; font-weight: 600; color: #3c4f63; }
.field label i { color: var(--accent); font-style: normal; }
.field input, .field select, .field textarea {
  border: 1px solid #cfdae6; border-radius: var(--r-sm); padding: 12px 14px;
  font-size: .9375rem; background: #fbfdff; transition: border-color .15s ease, box-shadow .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 0; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(242, 104, 31, .12); background: #fff;
}
.field textarea { resize: vertical; min-height: 130px; }
.field small { font-size: .75rem; color: var(--slate); }
.form-note { font-size: .78rem; color: var(--slate); margin-top: 12px; }

/* ---------- contact cards ---------- */
.contact-list { display: grid; gap: 14px; }
.contact-item {
  display: flex; gap: 16px; padding: 20px; border: 1px solid var(--line);
  border-radius: var(--r); background: #fff;
}
.contact-item i {
  width: 42px; height: 42px; flex: none; border-radius: var(--r-sm);
  background: rgba(15, 43, 71, .06); color: var(--navy);
  display: grid; place-items: center;
}
.contact-item b { display: block; font-size: .9375rem; color: var(--ink); }
.contact-item span, .contact-item a { font-size: .875rem; color: var(--steel); }
.contact-item a:hover { color: var(--accent); }

/* ---------- faq ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq summary {
  cursor: pointer; font-weight: 600; color: var(--ink); font-size: 1rem;
  display: flex; justify-content: space-between; gap: 20px; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-weight: 400; font-size: 1.25rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq p { margin-top: 12px; color: var(--steel); font-size: .9375rem; max-width: 62em; }

/* ---------- about: timeline ---------- */
.timeline { display: grid; gap: 0; border-left: 2px solid var(--line); margin-left: 8px; }
.timeline li { position: relative; padding: 0 0 30px 28px; }
.timeline li::before {
  content: ""; position: absolute; left: -7px; top: 6px; width: 12px; height: 12px;
  border-radius: 50%; background: #fff; border: 2px solid var(--accent);
}
.timeline b { font-family: var(--mono); color: var(--accent); font-size: .875rem; }
.timeline h3 { font-size: 1rem; margin: 6px 0 4px; }
.timeline p { font-size: .9rem; color: var(--steel); }

/* ---------- certs ---------- */
.certs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.cert {
  border: 1px solid rgba(255, 255, 255, .14); border-radius: var(--r);
  padding: 22px; text-align: center; background: rgba(255, 255, 255, .03);
}
.cert b { display: block; font-size: 1rem; color: #fff; margin-bottom: 4px; }
.cert span { font-size: .75rem; color: #8ba0b4; }

/* ---------- footer ---------- */
.site-footer { background: #071320; color: #8ea2b6; font-size: .9rem; }
.site-footer__main { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-block: 62px; }
.site-footer h4 { color: #fff; font-size: .8125rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 18px; }
.site-footer ul { display: grid; gap: 11px; }
.site-footer a:hover { color: #fff; }
.site-footer__brand .brand__name { color: #fff; }
.site-footer__brand .brand__sub { color: #6c8199; }
.site-footer__brand p { margin-top: 16px; max-width: 30em; font-size: .875rem; color: #7e93a8; }
.site-footer__contact li { display: flex; gap: 10px; align-items: flex-start; }
.site-footer__contact svg { width: 15px; height: 15px; margin-top: 4px; flex: none; color: var(--accent); }
.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, .08); padding-block: 20px;
  display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  font-size: .8125rem; color: #6d8298;
}
.site-footer__bottom ul { display: flex; gap: 20px; }

/* ---------- misc ---------- */
.note {
  font-size: .8125rem; color: var(--slate); border-left: 2px solid var(--line);
  padding-left: 12px;
}
.badge-row { display: flex; flex-wrap: wrap; gap: 10px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px; font-size: .8125rem;
  padding: 8px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; color: var(--steel);
}
.badge b { color: var(--ink); font-weight: 650; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__art { max-width: 520px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .industries { grid-template-columns: repeat(3, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .step:nth-child(2)::after { display: none; }
  .detail { grid-template-columns: 1fr; gap: 34px; }
  .site-footer__main { grid-template-columns: 1fr 1fr; gap: 32px; }
  .header__phone { display: none; }
}

@media (max-width: 860px) {
  :root { --pad: 20px; }
  .section { padding: 64px 0; }
  .topbar__meta { gap: 14px; }
  .topbar__meta span:nth-child(3) { display: none; }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto; background: #fff;
    flex-direction: column; align-items: stretch; padding: 14px 20px 22px;
    border-bottom: 1px solid var(--line); box-shadow: var(--sh-2);
    display: none; margin: 0;
  }
  .nav[data-open="true"] { display: flex; }
  .nav a { padding: 13px 8px; border-bottom: 1px solid var(--line-soft); border-radius: 0; }
  .nav a[aria-current="page"]::after { display: none; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .header__cta .btn { display: none; }
  .hero__stats div { padding-right: 20px; margin-right: 20px; }
  .hero__stats b { font-size: 1.3rem; }
  .stats .wrap { grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .stat:nth-child(2) { border: 0; }
  .industries { grid-template-columns: repeat(2, 1fr); }
  .certs { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .cta-band .wrap { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .products-grid { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .step::after { display: none; }
  .keyfacts { grid-template-columns: 1fr; }
  .site-footer__main { grid-template-columns: 1fr; }
  .hero .wrap { padding-block: 60px 68px; }
  .hero__badge { left: 0; bottom: -14px; }
  .form-card { padding: 24px; }
}

/* ---------- small-screen refinements ---------- */
@media (max-width: 560px) {
  .topbar__right { display: none; }
  .topbar .wrap { min-height: 38px; }
  .hero__stats { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
  .hero__stats div { border: 0; margin: 0; padding: 0; }
  .hero__stats b { font-size: 1.35rem; }
  .trust .wrap { gap: 16px; padding-block: 20px; }
  .trust ul { gap: 12px 24px; margin-left: 0; }
  .process { row-gap: 30px; }
}