/* ============================================================
   VerdLume — Corporate Site Demo (design draft for WordPress build)
   Palette: deep green / lime accent / warm neutrals
   ============================================================ */

:root {
  --ink: #0c1512;
  --ink-soft: #3d4b45;
  --muted: #6b7a73;
  --green-900: #0e2e22;
  --green-700: #14532d;
  --green-500: #16a34a;
  --lime: #a3e635;
  --lime-dark: #84cc16;
  --bg: #ffffff;
  --bg-soft: #f4f7f4;
  --bg-dark: #0b1410;
  --line: #e3e9e4;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(12, 21, 18, .08);
  --shadow-lg: 0 24px 60px rgba(12, 21, 18, .16);
  --container: 1200px;
  font-size: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
}

section { padding: 96px 0; }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head.center { margin-inline: auto; text-align: center; }

.kicker {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--green-500);
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 14px;
}

.section-head p { color: var(--muted); font-size: 1.05rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--lime);
  color: #10230b;
  box-shadow: 0 8px 22px rgba(163, 230, 53, .35);
}
.btn-primary:hover { background: var(--lime-dark); }
.btn-ghost {
  border-color: rgba(255, 255, 255, .45);
  color: #fff;
}
.btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, .1); }
.btn-outline {
  border-color: var(--ink);
  color: var(--ink);
}
.btn-outline:hover { background: var(--ink); color: #fff; }
.btn-sm { padding: 10px 20px; font-size: .88rem; }

/* ---------- Topbar ---------- */
.topbar {
  background: var(--bg-dark);
  color: #cfe0d6;
  font-size: .8rem;
  padding: 8px 0;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 6px 20px;
  flex-wrap: wrap;
}
.topbar strong { color: var(--lime); font-weight: 600; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -.02em;
}
.brand svg { width: 34px; height: 34px; }
.brand em { font-style: normal; color: var(--green-500); }

.main-nav ul { display: flex; gap: 34px; }
.main-nav a {
  font-size: .95rem;
  font-weight: 600;
  color: var(--ink-soft);
  position: relative;
  padding: 6px 0;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--green-500);
  transition: width .2s ease;
}
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }
.main-nav a.active { color: var(--ink); }

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

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  color: #fff;
  padding: 120px 0;
  isolation: isolate;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  z-index: -2;
}
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  animation: heroZoom 18s ease-out forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}
.hero::after {
  content: "";
  position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  z-index: -1;
  background: linear-gradient(100deg, rgba(6, 14, 10, .88) 12%, rgba(6, 14, 10, .55) 55%, rgba(6, 14, 10, .25) 100%);
}
.hero-inner { max-width: 680px; }
.hero .kicker { color: var(--lime); }
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: -.025em;
  margin-bottom: 22px;
}
.hero h1 span { color: var(--lime); }
.hero p {
  font-size: 1.12rem;
  color: #d7e4dc;
  margin-bottom: 36px;
  max-width: 560px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  background: rgba(8, 16, 12, .55);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255, 255, 255, .12);
}
.hero-stats .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 26px 0;
}
.stat b {
  display: block;
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--lime);
  letter-spacing: -.02em;
}
.stat span { font-size: .86rem; color: #b9c9c0; }

/* ---------- Certification bar ---------- */
.certs { background: var(--bg-soft); padding: 34px 0; border-bottom: 1px solid var(--line); }
.certs .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}
.cert {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: .92rem;
  color: var(--ink-soft);
}
.cert i {
  width: 40px; height: 40px;
  border: 2px solid var(--green-500);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-style: normal;
  font-size: .7rem;
  font-weight: 800;
  color: var(--green-700);
  background: #fff;
}

/* ---------- Products ---------- */
.grid-3 {
  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;
  transition: transform .25s ease, box-shadow .25s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-media {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #0f1a15;
}
.product-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.product-card:hover .product-media img { transform: scale(1.06); }
.product-body { padding: 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.product-tag {
  align-self: flex-start;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--green-700);
  background: #e7f3e9;
  padding: 4px 12px;
  border-radius: 999px;
}
.product-body h3 { font-size: 1.15rem; letter-spacing: -.01em; }
.product-body p { color: var(--muted); font-size: .92rem; flex: 1; }
.product-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .85rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.product-meta b { color: var(--green-700); }
.text-link {
  font-weight: 700;
  color: var(--green-700);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.text-link:hover { color: var(--green-500); }
.center-cta { text-align: center; margin-top: 56px; }

.product-media-ph {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background:
    radial-gradient(300px 200px at 70% 20%, rgba(163, 230, 53, .12), transparent 65%),
    linear-gradient(150deg, #123323, #0b1f16);
}
.product-media-ph svg { width: 64px; height: 64px; opacity: .9; }
.ph-note {
  color: #7fa18d;
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* ---------- Range banner (series lineup) ---------- */
.range { background: var(--bg-soft); }
.range-wrap {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 56px;
  align-items: center;
}
.range-text .btn { margin-top: 28px; }
.range-img img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

/* ---------- OEM box image ---------- */
.oem-box {
  width: 100%;
  border-radius: 14px;
  margin-bottom: 24px;
  display: block;
}

/* ---------- Why us ---------- */
.why { background: var(--bg-soft); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--green-700), var(--green-500));
  color: #eaffd0;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
}
.feature-icon svg { width: 26px; height: 26px; }
.feature h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: .92rem; }

/* ---------- OEM section ---------- */
.oem { background: var(--bg-dark); color: #e8f0ea; }
.oem .kicker { color: var(--lime); }
.oem .section-head p { color: #a8bcb1; }
.oem-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: start;
}
.steps { display: grid; gap: 4px; }
.step {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.step:last-child { border-bottom: none; }
.step-num {
  font-size: .85rem;
  font-weight: 800;
  color: var(--lime);
  letter-spacing: .08em;
  min-width: 34px;
  padding-top: 3px;
}
.step h4 { font-size: 1.02rem; margin-bottom: 4px; color: #fff; }
.step p { color: #a8bcb1; font-size: .9rem; }
.oem-panel {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 20px;
  padding: 36px 32px;
  position: sticky;
  top: 100px;
}
.oem-panel h3 { color: #fff; font-size: 1.2rem; margin-bottom: 20px; }
.oem-panel ul { display: grid; gap: 14px; }
.oem-panel li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: #c9d8cf;
  font-size: .94rem;
}
.oem-panel li svg { flex: none; width: 20px; height: 20px; margin-top: 3px; }
.oem-panel .btn { margin-top: 28px; width: 100%; justify-content: center; }

/* ---------- Applications ---------- */
.app-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}
.app-item {
  padding: 44px 30px;
  background: #fff;
  border-right: 1px solid var(--line);
  transition: background .2s ease;
}
.app-item:last-child { border-right: none; }
.app-item:hover { background: var(--bg-soft); }
.app-item svg { width: 40px; height: 40px; margin-bottom: 18px; }
.app-item h3 { font-size: 1.05rem; margin-bottom: 8px; }
.app-item p { color: var(--muted); font-size: .9rem; }

/* ---------- CTA band ---------- */
.cta-band {
  background:
    radial-gradient(1200px 400px at 15% 120%, rgba(163, 230, 53, .25), transparent 60%),
    linear-gradient(120deg, var(--green-900), var(--bg-dark));
  color: #fff;
  text-align: center;
  padding: 110px 0;
}
.cta-band h2 {
  font-size: clamp(1.9rem, 3.5vw, 2.8rem);
  letter-spacing: -.02em;
  margin-bottom: 16px;
}
.cta-band p { color: #b6c9be; max-width: 560px; margin: 0 auto 36px; }

/* ---------- Footer ---------- */
.site-footer {
  background: #080f0c;
  color: #8fa39a;
  padding: 72px 0 0;
  font-size: .92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
}
.site-footer h4 {
  color: #fff;
  font-size: .95rem;
  margin-bottom: 18px;
  letter-spacing: .02em;
}
.site-footer ul { display: grid; gap: 10px; }
.site-footer a:hover { color: var(--lime); }
.footer-brand .brand { color: #fff; margin-bottom: 16px; }
.footer-brand p { max-width: 300px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact svg { flex: none; width: 18px; height: 18px; margin-top: 3px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: .82rem;
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background:
    radial-gradient(900px 300px at 85% -20%, rgba(163, 230, 53, .18), transparent 60%),
    linear-gradient(120deg, var(--green-900), var(--bg-dark));
  color: #fff;
  padding: 84px 0;
}
.page-hero h1 { font-size: clamp(2rem, 4vw, 2.9rem); letter-spacing: -.02em; margin-bottom: 12px; }
.page-hero p { color: #b6c9be; max-width: 620px; }
.breadcrumb { font-size: .82rem; color: #8fa39a; margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--lime); }

/* ---------- Products page ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 44px; }
.chip {
  padding: 9px 20px;
  border-radius: 999px;
  border: 1.5px solid var(--line);
  background: #fff;
  font-size: .88rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  transition: .18s;
}
.chip:hover { border-color: var(--green-500); color: var(--green-700); }
.chip.active { background: var(--green-700); border-color: var(--green-700); color: #fff; }

.spec-table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow-x: auto;
  background: #fff;
  box-shadow: var(--shadow);
}
.spec-table { width: 100%; border-collapse: collapse; min-width: 760px; }
.spec-table th, .spec-table td {
  padding: 16px 20px;
  text-align: left;
  font-size: .9rem;
  border-bottom: 1px solid var(--line);
}
.spec-table thead th {
  background: var(--green-900);
  color: #d9ecdf;
  font-weight: 600;
  white-space: nowrap;
}
.spec-table tbody tr:hover { background: var(--bg-soft); }
.spec-table td:first-child { font-weight: 700; color: var(--green-700); white-space: nowrap; }
.spec-note { margin-top: 14px; font-size: .84rem; color: var(--muted); }
.spec-hint { display: none; font-size: .82rem; color: var(--muted); margin-bottom: 10px; }

/* ---------- Contact page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 56px;
  align-items: start;
}
.contact-info h2 { font-size: 1.7rem; letter-spacing: -.02em; margin-bottom: 14px; }
.contact-info > p { color: var(--muted); margin-bottom: 36px; }
.info-list { display: grid; gap: 22px; }
.info-item { display: flex; gap: 16px; align-items: flex-start; }
.info-item i {
  flex: none;
  width: 46px; height: 46px;
  border-radius: 13px;
  background: #e7f3e9;
  color: var(--green-700);
  display: grid;
  place-items: center;
}
.info-item svg { width: 22px; height: 22px; }
.info-item b { display: block; font-size: .95rem; }
.info-item span { color: var(--muted); font-size: .9rem; }

.quote-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 40px;
  box-shadow: var(--shadow);
}
.quote-form h3 { font-size: 1.25rem; margin-bottom: 6px; }
.quote-form > p { color: var(--muted); font-size: .9rem; margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 7px;
  color: var(--ink-soft);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  font: inherit;
  font-size: .93rem;
  color: var(--ink);
  background: var(--bg-soft);
  transition: border-color .18s, background .18s;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--green-500);
  background: #fff;
}
.field textarea { min-height: 130px; resize: vertical; }
.check-row { display: flex; flex-wrap: wrap; gap: 10px 22px; padding: 4px 2px; }
.check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .92rem;
  color: var(--ink-soft);
  font-weight: 500;
  cursor: pointer;
}
.check input { width: 17px; height: 17px; accent-color: var(--green-500); }
.form-footer { display: flex; align-items: center; gap: 16px; margin-top: 8px; }
.form-note { font-size: .8rem; color: var(--muted); }
.form-success {
  display: none;
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: 12px;
  background: #e7f3e9;
  border: 1px solid #bfe3c8;
  color: var(--green-700);
  font-size: .92rem;
  font-weight: 600;
}
.form-success.show { display: block; }

.map-card {
  margin-top: 56px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
  height: 340px;
  position: relative;
  background:
    radial-gradient(400px 200px at 60% 40%, rgba(22, 163, 74, .25), transparent 70%),
    linear-gradient(120deg, #0d1a13, #10241a);
  display: grid;
  place-items: center;
  color: #cfe0d6;
}
.map-pin { text-align: center; }
.map-pin svg { width: 44px; height: 44px; margin: 0 auto 12px; }

.faq { background: var(--bg-soft); }
.faq-list { max-width: 780px; margin-inline: auto; display: grid; gap: 14px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.faq-item summary {
  padding: 20px 24px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--green-500); }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding: 0 24px 22px; color: var(--muted); font-size: .93rem; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .app-item:nth-child(2n) { border-right: none; }
  .app-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .oem-grid, .contact-grid, .range-wrap { grid-template-columns: 1fr; }
  .oem-panel { position: static; }
  .range-img { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

/* ---------- Collapsed navigation (tablet + phone) ---------- */
@media (max-width: 860px) {
  .nav-wrap { height: 66px; gap: 10px; }
  .brand { font-size: 1.18rem; }
  .brand svg { width: 30px; height: 30px; }
  .nav-wrap .btn-sm { padding: 9px 15px; font-size: .82rem; }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    margin-right: -10px;
    flex: none;
  }
  .nav-toggle span { width: 22px; }

  /* panel drops from directly under the sticky header — never over it */
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    padding: 10px 22px 18px;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity .24s ease, transform .24s ease, visibility .24s;
  }
  .main-nav.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }
  .main-nav ul { flex-direction: column; gap: 0; }
  .main-nav li + li { border-top: 1px solid var(--line); }
  .main-nav a { display: block; padding: 15px 2px; font-size: 1.02rem; }
  .main-nav a::after { display: none; }
}

/* ---------- Phone ---------- */
@media (max-width: 768px) {
  .container { width: calc(100% - 36px); }
  section { padding: 60px 0; }
  section[id] { scroll-margin-top: 76px; }

  .topbar { padding: 7px 0; }
  .topbar .container { flex-direction: column; gap: 0; text-align: center; }
  .topbar .container span:first-child { display: none; }
  .topbar .container span:last-child { display: block; font-size: .76rem; }

  .grid-3 { grid-template-columns: 1fr; gap: 20px; }
  .grid-4 { gap: 16px; }

  .hero { min-height: auto; padding: 62px 0 84px; }
  .hero h1 { font-size: 2.15rem; margin-bottom: 18px; }
  .hero p { font-size: 1rem; margin-bottom: 28px; }
  .hero-actions { gap: 12px; }
  .hero-actions .btn { flex: 1 1 100%; justify-content: center; }
  .hero-stats { position: static; background: var(--bg-dark); }
  .hero-stats .container { grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 22px 0; }
  .stat b { font-size: 1.55rem; }

  .certs { padding: 24px 0; }
  .certs .container { justify-content: center; gap: 12px 18px; }
  .cert { font-size: .84rem; gap: 8px; }
  .cert i { width: 34px; height: 34px; font-size: .64rem; }

  .section-head { margin-bottom: 34px; }
  .section-head h2 { font-size: 1.6rem; }
  .section-head p { font-size: .98rem; }

  .product-body { padding: 20px; }
  .range-wrap { gap: 32px; }
  .oem-grid { gap: 36px; }
  .oem-panel { padding: 26px 20px; }
  .step { gap: 14px; padding: 16px 0; }

  .app-item { padding: 30px 20px; }
  .app-item svg { width: 34px; height: 34px; margin-bottom: 14px; }

  .cta-band { padding: 64px 0; }
  .cta-band h2 { font-size: 1.65rem; }

  .page-hero { padding: 52px 0; }
  .page-hero h1 { font-size: 1.75rem; }

  .filter-bar { gap: 8px; margin-bottom: 30px; }
  .chip { padding: 9px 15px; font-size: .84rem; }

  .contact-grid { gap: 36px; }
  .info-item i { width: 42px; height: 42px; }
  .quote-form { padding: 24px 18px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  /* 16px stops iOS Safari from zooming the page when a field is focused */
  .field input, .field select, .field textarea { font-size: 16px; }
  .form-footer { flex-direction: column; align-items: stretch; gap: 12px; }
  .form-footer .btn { width: 100%; justify-content: center; }

  .map-card { height: 240px; margin-top: 36px; }

  .faq-item summary { padding: 16px 18px; font-size: .96rem; }
  .faq-item p { padding: 0 18px 18px; }

  .spec-hint { display: block; }
  .spec-table { min-width: 620px; }
  .spec-table th, .spec-table td { padding: 12px 14px; font-size: .84rem; }

  .site-footer { padding: 52px 0 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; padding-bottom: 40px; }
  .footer-bottom { flex-direction: column; gap: 8px; font-size: .78rem; }
}

/* ---------- Small phone ---------- */
@media (max-width: 430px) {
  .container { width: calc(100% - 32px); }
  .main-nav { padding: 8px 16px 14px; }
  .brand { font-size: 1.06rem; }
  .brand svg { width: 26px; height: 26px; }
  .nav-wrap .btn-sm { padding: 8px 13px; font-size: .78rem; }
  .hero { padding: 50px 0 72px; }
  .hero h1 { font-size: 1.85rem; }
  .hero .kicker { font-size: .72rem; letter-spacing: .1em; }
  .section-head h2 { font-size: 1.45rem; }
  .cta-band h2 { font-size: 1.5rem; }
  .page-hero h1 { font-size: 1.55rem; }

  .app-grid { grid-template-columns: 1fr; }
  .app-grid .app-item { border-right: none; border-bottom: 1px solid var(--line); padding: 26px 18px; }
  .app-grid .app-item:last-child { border-bottom: none; }

  .product-card .product-body h3 { font-size: 1.06rem; }
  .quote-form { padding: 20px 16px; }
}