/* ============================================
   FENGDA CERAMICS — B2B Independent Site
   Porcelain white + cobalt blue design system
   ============================================ */

:root {
  --ink: #1C2B3A;
  --cobalt: #1E4E8C;
  --cobalt-dark: #143A6B;
  --cobalt-light: #E8F0F9;
  --bg: #FBFAF7;
  --card: #FFFFFF;
  --muted: #64707F;
  --line: #E6E3DB;
  --gold: #B08D4F;
  --radius: 10px;
  --font-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--cobalt); text-decoration: none; }
a:hover { color: var(--cobalt-dark); }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  color: var(--ink);
}

.section { padding: 72px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-tag {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cobalt);
  font-weight: 600;
  margin-bottom: 12px;
}
.section-head h2 { font-size: 34px; margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 16px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--cobalt);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
}
.brand-name { line-height: 1.15; }
.brand-name .en { font-family: var(--font-display); font-size: 19px; font-weight: 600; color: var(--ink); display: block; }
.brand-name .zh { font-size: 11px; color: var(--muted); letter-spacing: 0.28em; display: block; }

.main-nav { display: flex; align-items: center; gap: 30px; }
.main-nav a {
  color: var(--ink);
  font-size: 14.5px;
  font-weight: 500;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s;
}
.main-nav a:hover, .main-nav a.active { color: var(--cobalt); border-bottom-color: var(--cobalt); }

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.15s, color 0.15s, transform 0.1s;
  font-family: var(--font-body);
}
.btn-primary { background: var(--cobalt); color: #fff; }
.btn-primary:hover { background: var(--cobalt-dark); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--cobalt);
  border: 1.5px solid var(--cobalt);
}
.btn-outline:hover { background: var(--cobalt); color: #fff; }
.btn-white { background: #fff; color: var(--cobalt); }
.btn-white:hover { background: #EDF2F8; color: var(--cobalt-dark); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(ellipse 900px 500px at 85% -10%, rgba(30,78,140,0.08), transparent),
    radial-gradient(ellipse 700px 400px at 10% 110%, rgba(176,141,79,0.07), transparent),
    var(--bg);
  padding: 100px 0 90px;
  overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 60px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--cobalt-light);
  color: var(--cobalt-dark);
  font-size: 13px; font-weight: 600;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 { font-size: 46px; margin-bottom: 20px; }
.hero h1 em { font-style: italic; color: var(--cobalt); }
.hero-sub { font-size: 17.5px; color: var(--muted); max-width: 520px; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-visual { position: relative; }
.hero-plate {
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 38% 32%, #FFFFFF 0%, #F4F1E9 55%, #E4DFD2 100%);
  border: 1px solid var(--line);
  box-shadow: inset 0 0 0 14px #fff, inset 0 0 0 15px var(--line);
  display: flex; align-items: center; justify-content: center;
}
.hero-plate-inner {
  width: 62%; aspect-ratio: 1;
  border-radius: 50%;
  border: 2px solid rgba(30,78,140,0.35);
  display: flex; align-items: center; justify-content: center;
}
.hero-plate-core {
  font-family: var(--font-display);
  color: var(--cobalt);
  text-align: center;
}
.hero-plate-core .big { font-size: 44px; font-weight: 600; display: block; }
.hero-plate-core .small { font-size: 13px; letter-spacing: 0.3em; text-transform: uppercase; }

.hero-badge {
  position: absolute;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 18px;
  box-shadow: 0 6px 24px rgba(28,43,58,0.08);
}
.hero-badge b { display: block; font-size: 19px; color: var(--cobalt); font-family: var(--font-display); }
.hero-badge span { font-size: 12.5px; color: var(--muted); }
.hero-badge.b1 { top: 8%; right: -14px; }
.hero-badge.b2 { bottom: 12%; left: -20px; }

/* ---------- Trust bar ---------- */
.trust-bar { background: var(--ink); color: #fff; padding: 26px 0; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.trust-item b { font-family: var(--font-display); font-size: 30px; font-weight: 600; color: #fff; display: block; }
.trust-item b span { color: var(--gold); }
.trust-item p { font-size: 13.5px; color: rgba(255,255,255,0.72); margin-top: 2px; }

/* ---------- Series grid ---------- */
.series-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.series-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.15s, box-shadow 0.15s;
  display: block;
  color: var(--ink);
}
.series-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(28,43,58,0.10);
  color: var(--ink);
}
.series-thumb {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #F2EFE8 0%, #E4EDF6 100%);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  overflow: hidden;
}
.series-thumb .ph-icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  border: 2px solid rgba(30,78,140,0.4);
  display: flex; align-items: center; justify-content: center;
  color: var(--cobalt);
  font-family: var(--font-display);
  font-size: 24px;
}
.series-thumb img { width: 100%; height: 100%; object-fit: cover; }
.series-thumb .count {
  position: absolute; top: 12px; right: 12px;
  background: rgba(28,43,58,0.85);
  color: #fff;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
}
.series-body { padding: 18px 20px 20px; }
.series-body h3 { font-size: 18px; margin-bottom: 6px; }
.series-body p { font-size: 13.5px; color: var(--muted); line-height: 1.5; }

/* ---------- Segments ---------- */
.segments { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.segment-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.segment-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.segment-card .seg-num {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--gold);
  font-weight: 600;
  display: block;
  margin-bottom: 10px;
}
.segment-card h3 { font-size: 19px; margin-bottom: 10px; }
.segment-card p { font-size: 13.5px; color: var(--muted); }
.segment-card ul { margin-top: 12px; list-style: none; }
.segment-card li {
  font-size: 13.5px; color: var(--muted);
  padding-left: 20px; position: relative; margin-bottom: 6px;
}
.segment-card li::before {
  content: "";
  position: absolute; left: 0; top: 8px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--cobalt-light);
  border: 1.5px solid var(--cobalt);
}

/* ---------- Why us ---------- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.why-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
}
.why-card .why-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius);
  background: var(--cobalt-light);
  color: var(--cobalt);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}
.why-card h3 { font-size: 18px; margin-bottom: 8px; }
.why-card p { font-size: 14px; color: var(--muted); }

/* ---------- CTA band ---------- */
.cta-band {
  background:
    radial-gradient(ellipse 600px 300px at 90% 20%, rgba(176,141,79,0.25), transparent),
    var(--cobalt);
  color: #fff;
  padding: 64px 0;
  text-align: center;
}
.cta-band h2 { color: #fff; font-size: 32px; margin-bottom: 12px; }
.cta-band p { color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 28px; }

/* ---------- Certs strip ---------- */
.certs-strip { background: #fff; padding: 40px 0; border-bottom: 1px solid var(--line); }
.cert-row { display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; align-items: center; }
.cert-item { display: flex; align-items: center; gap: 10px; color: var(--muted); }
.cert-item .cert-badge {
  width: 40px; height: 40px;
  border-radius: 8px;
  border: 1.5px solid var(--cobalt);
  color: var(--cobalt);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 12px;
}
.cert-item span { font-size: 14px; font-weight: 500; color: var(--ink); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background:
    radial-gradient(ellipse 700px 300px at 80% -50%, rgba(30,78,140,0.10), transparent),
    var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 64px 0 56px;
  text-align: center;
}
.page-hero h1 { font-size: 38px; margin-bottom: 12px; }
.page-hero p { color: var(--muted); max-width: 620px; margin: 0 auto; font-size: 16px; }
.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--cobalt); }

/* ---------- Products page ---------- */
.filter-bar {
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
  margin-bottom: 40px;
}
.filter-btn {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all 0.15s;
}
.filter-btn:hover { border-color: var(--cobalt); color: var(--cobalt); }
.filter-btn.active { background: var(--cobalt); border-color: var(--cobalt); color: #fff; }

.series-block { margin-bottom: 64px; }
.series-block-head {
  display: flex; align-items: baseline; gap: 16px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 12px;
}
.series-block-head h2 { font-size: 26px; }
.series-block-head .en-sub { font-size: 14px; color: var(--muted); }
.series-block-head .item-count { margin-left: auto; font-size: 13px; color: var(--muted); }

.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.product-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.15s, box-shadow 0.15s;
}
.product-card:hover { transform: translateY(-3px); box-shadow: 0 10px 28px rgba(28,43,58,0.10); }
.product-thumb {
  aspect-ratio: 1;
  background: linear-gradient(135deg, #F2EFE8 0%, #E7EFF7 100%);
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.product-thumb img { width: 100%; height: 100%; object-fit: cover; }
.product-thumb .ph-mark {
  width: 56%; aspect-ratio: 1;
  border-radius: 50%;
  border: 2px dashed rgba(30,78,140,0.35);
  display: flex; align-items: center; justify-content: center;
  color: var(--cobalt);
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  padding: 12px;
}
.product-body { padding: 14px 16px 16px; }
.product-body h3 { font-size: 15px; font-weight: 600; font-family: var(--font-body); margin-bottom: 4px; }
.product-body .spec { font-size: 12.5px; color: var(--muted); }
.product-body .inquire-link {
  display: inline-block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--cobalt);
}

/* ---------- About page ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-grid h2 { font-size: 30px; margin-bottom: 16px; }
.about-grid p { color: var(--muted); margin-bottom: 14px; font-size: 15px; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; }
.about-stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
}
.about-stat b { font-family: var(--font-display); font-size: 26px; color: var(--cobalt); display: block; }
.about-stat span { font-size: 12.5px; color: var(--muted); }

.factory-visual {
  border-radius: var(--radius);
  background: linear-gradient(135deg, #EFF3F8 0%, #E4EDF6 100%);
  border: 1px solid var(--line);
  aspect-ratio: 4/3;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: var(--muted);
  text-align: center;
  padding: 30px;
}
.factory-visual .cam-icon {
  width: 60px; height: 60px;
  border-radius: 50%;
  border: 2px solid rgba(30,78,140,0.35);
  color: var(--cobalt);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  margin-bottom: 14px;
}

.timeline { max-width: 780px; margin: 0 auto; }
.timeline-item {
  display: grid; grid-template-columns: 110px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.timeline-item:last-child { border-bottom: none; }
.timeline-item .year { font-family: var(--font-display); font-size: 22px; color: var(--cobalt); font-weight: 600; }
.timeline-item h3 { font-size: 17px; margin-bottom: 4px; }
.timeline-item p { font-size: 14px; color: var(--muted); }

.process-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.step-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 16px;
  text-align: center;
  position: relative;
}
.step-card .step-no {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--cobalt);
  color: #fff;
  font-size: 14px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 12px;
}
.step-card h3 { font-size: 15px; margin-bottom: 6px; }
.step-card p { font-size: 12.5px; color: var(--muted); }

/* ---------- Contact page ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.contact-info-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
}
.contact-info-card h2 { font-size: 24px; margin-bottom: 20px; }
.contact-line {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.contact-line:last-child { border-bottom: none; }
.contact-line .cl-icon {
  width: 38px; height: 38px;
  border-radius: 8px;
  background: var(--cobalt-light);
  color: var(--cobalt);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 17px;
}
.contact-line b { display: block; font-size: 14px; margin-bottom: 2px; }
.contact-line span, .contact-line a { font-size: 14px; color: var(--muted); }
.contact-line a:hover { color: var(--cobalt); }

.quote-form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
}
.quote-form h2 { font-size: 24px; margin-bottom: 8px; }
.quote-form .form-note { font-size: 13.5px; color: var(--muted); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 6px;
}
.form-group label .req { color: #C0392B; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14.5px;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  transition: border-color 0.15s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--cobalt);
  background: #fff;
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-submit { width: 100%; padding: 14px; font-size: 16px; margin-top: 6px; }
.form-hint { font-size: 12.5px; color: var(--muted); margin-top: 12px; text-align: center; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
}
.faq-q {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-body);
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-q .faq-arrow { transition: transform 0.2s; color: var(--cobalt); font-size: 18px; flex-shrink: 0; }
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.faq-a-inner { padding: 0 24px 20px; color: var(--muted); font-size: 14.5px; }
.faq-a-inner p { margin-bottom: 8px; }
.faq-a-inner ul { padding-left: 20px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,0.75); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
.footer-brand .brand-mark { margin-bottom: 14px; }
.footer-brand p { font-size: 13.5px; line-height: 1.7; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; font-family: var(--font-body); font-weight: 600; }
.footer-col a, .footer-col li {
  display: block;
  color: rgba(255,255,255,0.72);
  font-size: 13.5px;
  margin-bottom: 10px;
  list-style: none;
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
}

/* ---------- WhatsApp float ---------- */
.whatsapp-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(37,211,102,0.4);
  z-index: 90;
  transition: transform 0.15s;
}
.whatsapp-float:hover { transform: scale(1.08); color: #fff; }
.whatsapp-float svg { width: 28px; height: 28px; fill: #fff; }

/* ---------- Factory gallery ---------- */
.factory-photo {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  margin: 0;
}
.factory-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}

.factory-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.factory-gallery.factory-home {
  grid-template-columns: repeat(3, 1fr);
}

.fg-item {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 8px rgba(10, 30, 60, 0.04);
}
.fg-item img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  cursor: zoom-in;
  transition: transform 0.25s ease;
}
.fg-item:hover img { transform: scale(1.03); }
.fg-item figcaption {
  font-size: 12.5px;
  color: var(--muted);
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 35, 0.9);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  cursor: zoom-out;
  padding: 24px;
}
.lightbox-overlay.open { display: flex; }
.lightbox-overlay img {
  max-width: 100%;
  max-height: 92vh;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

@media (max-width: 860px) {
  .factory-gallery,
  .factory-gallery.factory-home { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .factory-gallery,
  .factory-gallery.factory-home { grid-template-columns: 1fr; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .series-grid, .segment-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 460px; margin: 0 auto; }
}

@media (max-width: 720px) {
  .hero { padding: 60px 0 56px; }
  .hero h1 { font-size: 33px; }
  .section { padding: 52px 0; }
  .section-head h2 { font-size: 27px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .series-grid, .segment-grid, .why-grid, .product-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .contact-grid, .about-grid, .form-row { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 70px 1fr; gap: 14px; }

  .main-nav {
    display: none;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: 20px 24px;
    gap: 18px;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .header-cta { display: none; }
}