/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --c-primary: #0A6EBD;
  --c-primary-dark: #064E89;
  --c-primary-light: #E8F4FD;
  --c-accent: #14B8A6;
  --c-accent-dark: #0D9488;
  --c-accent-light: #E6FFFA;
  --c-green: #10B981;
  --c-text: #1A2B3C;
  --c-text-light: #5A6B7B;
  --c-text-muted: #8A9AAB;
  --c-border: #E2E8F0;
  --c-bg: #FFFFFF;
  --c-bg-soft: #F5F8FA;
  --c-bg-dark: #0B1F33;
  --c-white: #FFFFFF;
  --shadow-sm: 0 1px 3px rgba(10,30,60,.08);
  --shadow-md: 0 4px 20px rgba(10,30,60,.10);
  --shadow-lg: 0 12px 40px rgba(10,30,60,.14);
  --radius: 10px;
  --radius-lg: 18px;
  --maxw: 1240px;
  --header-h: 72px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue","Segoe UI",Arial,sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ===== Typography ===== */
h1,h2,h3,h4 { font-weight: 700; line-height: 1.3; color: var(--c-text); }
.section-title { font-size: 2rem; text-align: center; margin-bottom: .4rem; letter-spacing: -.02em; }
.section-subtitle { text-align: center; color: var(--c-text-light); font-size: 1.02rem; margin-bottom: 3rem; }
.section-tag {
  display: inline-block; font-size: .8rem; font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; color: var(--c-accent); margin-bottom: .6rem;
}
.section { padding: 84px 0; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-head .section-tag { display: block; }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; height: var(--header-h);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  z-index: 1000; border-bottom: 1px solid rgba(226,232,240,.7);
  transition: box-shadow .3s var(--ease), background .3s var(--ease);
}
.site-header.scrolled { box-shadow: var(--shadow-md); background: rgba(255,255,255,.97); }
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 1.15rem; letter-spacing: -.02em;
  box-shadow: 0 4px 12px rgba(10,110,189,.3);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 1.05rem; font-weight: 700; color: var(--c-text); letter-spacing: -.01em; }
.brand-en { font-size: .68rem; color: var(--c-text-muted); letter-spacing: .04em; text-transform: uppercase; }

.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu a {
  padding: 8px 18px; font-size: .95rem; font-weight: 500; color: var(--c-text-light);
  border-radius: 8px; position: relative; transition: all .25s var(--ease);
}
.nav-menu a:hover { color: var(--c-primary); background: var(--c-primary-light); }
.nav-menu a.active { color: var(--c-primary); font-weight: 600; }
.nav-menu a.active::after {
  content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
  width: 20px; height: 3px; border-radius: 2px; background: var(--c-primary);
}

.nav-cta {
  padding: 9px 22px; background: var(--c-primary); color: #fff !important;
  border-radius: 8px; font-weight: 600; font-size: .9rem; margin-left: 12px;
  transition: all .25s var(--ease); box-shadow: 0 4px 12px rgba(10,110,189,.25);
}
.nav-cta:hover { background: var(--c-primary-dark); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(10,110,189,.35); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--c-text); border-radius: 2px;
  transition: all .3s var(--ease); position: relative;
}
.nav-toggle span + span { margin-top: 6px; }
.nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 13px 30px;
  border-radius: 10px; font-weight: 600; font-size: .95rem; cursor: pointer;
  border: none; transition: all .3s var(--ease); letter-spacing: .01em;
}
.btn-primary { background: var(--c-primary); color: #fff; box-shadow: 0 6px 18px rgba(10,110,189,.28); }
.btn-primary:hover { background: var(--c-primary-dark); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(10,110,189,.36); }
.btn-outline { background: transparent; color: var(--c-primary); border: 2px solid var(--c-primary); }
.btn-outline:hover { background: var(--c-primary); color: #fff; transform: translateY(-2px); }
.btn-white { background: rgba(255,255,255,.15); color: #fff; border: 1.5px solid rgba(255,255,255,.5); backdrop-filter: blur(4px); }
.btn-white:hover { background: rgba(255,255,255,.25); border-color: #fff; transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--c-primary); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ===== Hero ===== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(135deg, #064E89 0%, #0A6EBD 35%, #0E7FA8 65%, #14B8A6 100%);
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(20,184,166,.25), transparent 50%),
    radial-gradient(circle at 15% 75%, rgba(10,110,189,.3), transparent 45%);
}
.hero-shapes { position: absolute; inset: 0; z-index: 1; opacity: .18; }
.hero-shapes svg { position: absolute; }
.hero-shapes svg:first-child { animation: helixFloat 8s ease-in-out infinite; }
.hero-shapes svg:nth-child(2) { animation: moleculePulse 6s ease-in-out infinite; }
@keyframes helixFloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-15px); } }
@keyframes moleculePulse { 0%,100% { opacity: 1; } 50% { opacity: .6; } }
.hero-content { position: relative; z-index: 3; color: #fff; padding-top: var(--header-h); }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.25);
  border-radius: 50px; font-size: .82rem; font-weight: 500; margin-bottom: 1.6rem;
  backdrop-filter: blur(8px);
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--c-green); box-shadow: 0 0 0 3px rgba(16,185,129,.3); }
.hero-title { font-size: 3.4rem; font-weight: 800; line-height: 1.15; letter-spacing: -.03em; margin-bottom: 1.2rem; }
.hero-title .grad { background: linear-gradient(120deg, #5EEAD4, #67E8F9); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-desc { font-size: 1.15rem; line-height: 1.8; max-width: 580px; opacity: .92; margin-bottom: 2rem; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-slider { position: relative; z-index: 3; margin-top: 3rem; max-width: 620px; }
.hero-quote {
  padding: 24px 28px; background: rgba(255,255,255,.10); border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius-lg); backdrop-filter: blur(12px); position: relative;
}
.hero-quote .q-en { font-size: 1.05rem; font-weight: 600; margin-bottom: .3rem; }
.hero-quote .q-cn { font-size: .9rem; opacity: .8; }
.hero-quote .q-mark { position: absolute; top: -8px; left: 20px; font-size: 3rem; color: rgba(255,255,255,.2); font-family: Georgia, serif; }
.hero-dots { display: flex; gap: 8px; margin-top: 16px; }
.hero-dots .dot { width: 28px; height: 4px; border-radius: 2px; background: rgba(255,255,255,.3); cursor: pointer; transition: all .3s; }
.hero-dots .dot.active { background: #fff; width: 40px; }

/* ===== Stats ===== */
.stats-bar { background: var(--c-bg-dark); color: #fff; padding: 48px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; text-align: center; }
.stat-item .stat-num { font-size: 2.6rem; font-weight: 800; color: var(--c-accent); letter-spacing: -.02em; }
.stat-item .stat-num .suffix { font-size: 1.3rem; opacity: .7; }
.stat-item .stat-label { font-size: .92rem; opacity: .7; margin-top: .3rem; }

/* ===== Cards ===== */
.card {
  background: #fff; border-radius: var(--radius-lg); padding: 36px 30px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--c-border);
  transition: all .35s var(--ease); position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card-icon {
  width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.2rem; flex-shrink: 0;
}
.card-icon svg { width: 28px; height: 28px; }
.card h3 { font-size: 1.18rem; margin-bottom: .6rem; }
.card p { color: var(--c-text-light); font-size: .92rem; line-height: 1.7; }

/* ===== Feature grid ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.feature-grid .card-icon { background: var(--c-primary-light); color: var(--c-primary); }
.feature-grid .card:hover .card-icon { background: var(--c-primary); color: #fff; }

/* ===== Product card ===== */
.product-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.product-card {
  border-radius: var(--radius-lg); overflow: hidden; background: #fff;
  box-shadow: var(--shadow-sm); border: 1px solid var(--c-border);
  transition: all .35s var(--ease); cursor: pointer; position: relative;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-img {
  height: 220px; position: relative; display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.product-img .pattern { position: absolute; inset: 0; opacity: .9; }
.product-img .product-label {
  position: relative; z-index: 2; color: #fff; font-size: 2.4rem; font-weight: 800; letter-spacing: .04em;
  text-shadow: 0 2px 12px rgba(0,0,0,.2);
}
.product-info { padding: 24px 26px; }
.product-info h3 { font-size: 1.15rem; margin-bottom: .4rem; }
.product-info .product-desc { color: var(--c-text-light); font-size: .9rem; margin-bottom: .8rem; }
.product-info .product-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.product-tag { font-size: .75rem; padding: 3px 10px; border-radius: 20px; background: var(--c-primary-light); color: var(--c-primary); font-weight: 500; }

/* ===== Category grid (products page) ===== */
.category-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.category-card {
  border-radius: var(--radius-lg); overflow: hidden; position: relative; cursor: pointer;
  aspect-ratio: 1/1; display: flex; align-items: flex-end;
  transition: all .35s var(--ease); box-shadow: var(--shadow-sm);
}
.category-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.category-card .cat-bg { position: absolute; inset: 0; }
.category-card .cat-overlay {
  position: absolute; inset: 0; background: linear-gradient(to top, rgba(6,78,137,.92) 0%, rgba(6,78,137,.3) 60%, transparent 100%);
}
.category-card .cat-content { position: relative; z-index: 2; padding: 20px; color: #fff; width: 100%; }
.category-card .cat-icon { width: 44px; height: 44px; margin-bottom: .6rem; opacity: .95; display: block; }
.category-card .cat-name { font-size: 1rem; font-weight: 700; margin-bottom: .2rem; }
.category-card .cat-en { font-size: .72rem; opacity: .75; }

/* ===== Process steps ===== */
.process-steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; position: relative; }
.process-step {
  background: #fff; border-radius: var(--radius-lg); padding: 28px 24px;
  border: 1px solid var(--c-border); position: relative; transition: all .3s var(--ease);
}
.process-step:hover { border-color: var(--c-accent); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.process-step .step-num {
  width: 36px; height: 36px; border-radius: 50%; background: var(--c-primary-light); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .95rem; margin-bottom: 1rem;
  transition: all .3s var(--ease);
}
.process-step:hover .step-num { background: var(--c-primary); color: #fff; }
.process-step h4 { font-size: 1rem; margin-bottom: .4rem; }
.process-step p { font-size: .85rem; color: var(--c-text-light); line-height: 1.65; }

/* ===== Tech showcase ===== */
.tech-showcase { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.tech-list .tech-item { display: flex; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--c-border); }
.tech-list .tech-item:last-child { border-bottom: none; }
.tech-badge {
  flex-shrink: 0; width: 64px; height: 64px; border-radius: 14px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; font-size: .72rem;
  text-align: center; line-height: 1.2; box-shadow: 0 6px 16px rgba(10,110,189,.25);
}
.tech-item h4 { font-size: 1.1rem; margin-bottom: .3rem; }
.tech-item p { font-size: .9rem; color: var(--c-text-light); }

/* ===== Timeline ===== */
.timeline { position: relative; max-width: 760px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; background: var(--c-border); transform: translateX(-50%); }
.timeline-item { position: relative; width: 50%; padding: 0 40px 40px 0; }
.timeline-item:nth-child(even) { left: 50%; padding: 0 0 40px 40px; }
.timeline-item .tl-dot {
  position: absolute; right: -8px; top: 4px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--c-primary); border: 3px solid #fff; box-shadow: 0 0 0 3px var(--c-primary-light); z-index: 2;
}
.timeline-item:nth-child(even) .tl-dot { left: -8px; right: auto; }
.timeline-item .tl-card { background: #fff; border-radius: var(--radius); padding: 20px 24px; box-shadow: var(--shadow-sm); border: 1px solid var(--c-border); }
.timeline-item .tl-year { font-size: 1.3rem; font-weight: 800; color: var(--c-primary); margin-bottom: .3rem; }
.timeline-item .tl-title { font-size: .98rem; font-weight: 600; margin-bottom: .3rem; }
.timeline-item .tl-desc { font-size: .85rem; color: var(--c-text-light); }

/* ===== Contact ===== */
.contact-info-card {
  background: #fff; border-radius: var(--radius-lg); padding: 36px;
  box-shadow: var(--shadow-md); border: 1px solid var(--c-border);
}
.contact-row { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--c-border); }
.contact-row:last-child { border-bottom: none; }
.contact-row .ci-icon {
  width: 44px; height: 44px; border-radius: 12px; background: var(--c-primary-light); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.contact-row .ci-label { font-size: .8rem; color: var(--c-text-muted); margin-bottom: .2rem; }
.contact-row .ci-value { font-size: .98rem; font-weight: 600; color: var(--c-text); }

.contact-form { background: #fff; border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-md); border: 1px solid var(--c-border); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: .88rem; font-weight: 600; margin-bottom: .5rem; color: var(--c-text); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px; border: 1.5px solid var(--c-border); border-radius: 10px;
  font-size: .92rem; font-family: inherit; color: var(--c-text); transition: all .25s var(--ease); background: var(--c-bg-soft);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--c-primary); background: #fff; box-shadow: 0 0 0 3px rgba(10,110,189,.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ===== Service plan ===== */
.service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.service-block { background: var(--c-bg-soft); border-radius: var(--radius-lg); padding: 30px 26px; border-left: 4px solid var(--c-accent); transition: all .3s var(--ease); }
.service-block:hover { background: #fff; box-shadow: var(--shadow-md); transform: translateY(-3px); }
.service-block h4 { font-size: 1.1rem; margin-bottom: 1rem; display: flex; align-items: center; gap: 8px; }
.service-block h4 .sb-icon { color: var(--c-accent); }
.service-block ul li { font-size: .88rem; color: var(--c-text-light); padding: 6px 0; padding-left: 18px; position: relative; }
.service-block ul li::before { content: ''; position: absolute; left: 0; top: 14px; width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent); }

/* ===== CTA banner ===== */
.cta-banner {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; padding: 60px 50px;
  background: linear-gradient(135deg, #064E89, #0A6EBD, #14B8A6);
  display: flex; align-items: center; justify-content: space-between; gap: 30px; color: #fff;
}
.cta-banner::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 90% 50%, rgba(20,184,166,.3), transparent 50%);
}
.cta-banner .cta-content { position: relative; z-index: 2; }
.cta-banner h2 { color: #fff; font-size: 1.8rem; margin-bottom: .5rem; }
.cta-banner p { opacity: .85; font-size: 1rem; }
.cta-banner .btn { position: relative; z-index: 2; }

/* ===== Page hero (inner pages) ===== */
.page-hero {
  position: relative; padding: calc(var(--header-h) + 70px) 0 70px; overflow: hidden;
  background: linear-gradient(135deg, #064E89 0%, #0A6EBD 50%, #14B8A6 100%);
  color: #fff;
}
.page-hero::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 85% 30%, rgba(20,184,166,.25), transparent 50%),
              radial-gradient(circle at 10% 80%, rgba(10,110,189,.3), transparent 45%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; font-size: 2.6rem; font-weight: 800; margin-bottom: .6rem; letter-spacing: -.02em; }
.page-hero .breadcrumb { font-size: .88rem; opacity: .75; }
.page-hero .breadcrumb a:hover { opacity: 1; text-decoration: underline; }
.page-hero .ph-desc { font-size: 1.05rem; opacity: .88; max-width: 600px; margin-top: 1rem; }

/* ===== Table ===== */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--c-border); font-size: .9rem; }
.data-table th { background: var(--c-bg-soft); font-weight: 600; color: var(--c-text); font-size: .85rem; }
.data-table tr:hover td { background: var(--c-primary-light); }

/* ===== Footer ===== */
.site-footer { background: var(--c-bg-dark); color: #fff; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-brand .brand-logo { margin-bottom: 1rem; }
.footer-brand p { font-size: .88rem; opacity: .65; line-height: 1.8; margin-top: .8rem; max-width: 300px; }
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 1.2rem; font-weight: 600; }
.footer-col ul li { margin-bottom: .7rem; }
.footer-col ul li a { font-size: .88rem; opacity: .6; transition: all .25s var(--ease); }
.footer-col ul li a:hover { opacity: 1; color: var(--c-accent); padding-left: 4px; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: .8rem; font-size: .86rem; opacity: .65; }
.footer-contact li svg { flex-shrink: 0; margin-top: 2px; color: var(--c-accent); }
.footer-bottom { padding: 24px 0; display: flex; justify-content: space-between; align-items: center; font-size: .82rem; opacity: .5; }
.footer-bottom a { opacity: .7; }
.footer-bottom a:hover { opacity: 1; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal.delay-1 { transition-delay: .1s; }
.reveal.delay-2 { transition-delay: .2s; }
.reveal.delay-3 { transition-delay: .3s; }

/* ===== Misc ===== */
.bg-soft { background: var(--c-bg-soft); }
.bg-gradient { background: linear-gradient(135deg, var(--c-primary-light), var(--c-accent-light)); }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .feature-grid, .product-grid { grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: repeat(3, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-showcase { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 2.6rem; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-title { font-size: 1.6rem; }
  .hero { min-height: auto; padding: 100px 0 60px; }
  .hero-title { font-size: 2rem; }
  .hero-desc { font-size: 1rem; }
  .hero-slider { display: none; }

  .nav-menu {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; background: #fff; padding: 16px;
    box-shadow: var(--shadow-lg); gap: 2px; align-items: stretch;
    transform: translateY(-120%); transition: transform .35s var(--ease); border-top: 1px solid var(--c-border);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a { padding: 12px 16px; }
  .nav-menu a.active::after { display: none; }
  .nav-cta { margin-left: 0; text-align: center; }
  .nav-toggle { display: block; }

  .feature-grid, .product-grid, .category-grid, .process-steps, .stats-grid, .service-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .cta-banner { flex-direction: column; text-align: center; padding: 40px 28px; }
  .form-row { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 1.9rem; }
  .container { padding: 0 18px; }
  .timeline::before { left: 20px; }
  .timeline-item { width: 100%; padding: 0 0 30px 50px; }
  .timeline-item:nth-child(even) { left: 0; padding: 0 0 30px 50px; }
  .timeline-item .tl-dot { left: 12px; right: auto; }
}