/* ============================================================
   苏州美澄阳智能工程有限公司 官方网站
   设计系统：深蓝(#1A66B0) + 品牌橙(#F5A021)，浅色底、圆角卡片
   ============================================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --blue: #1a66b0;
  --blue-dark: #0f3d6e;
  --blue-deep: #0a2c50;
  --accent: #f5a021;
  --accent-deep: #e8830c;
  --ink: #1c2b3a;
  --text: #33414f;
  --text-secondary: #64748b;
  --bg: #f6f7f9;
  --card: #ffffff;
  --border: #e8eaee;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(15, 45, 80, .06);
  --shadow-hover: 0 10px 30px rgba(15, 45, 80, .12);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
    "Hiragino Sans GB", "Malgun Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--blue); }

/* ---------------- NAV ---------------- */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  height: 68px;
  padding: 0 clamp(20px, 5vw, 64px);
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.nav-logo img { height: 40px; width: auto; }
.nav-logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.nav-logo-text b { font-size: 16px; color: var(--ink); letter-spacing: .5px; font-weight: 700; }
.nav-logo-text span { font-size: 10px; color: var(--text-secondary); letter-spacing: 1.5px; text-transform: uppercase; }

.nav-links { display: flex; gap: 6px; list-style: none; align-items: center; }
.nav-links a {
  text-decoration: none; color: var(--text-secondary);
  font-size: 14.5px; font-weight: 500;
  padding: 8px 14px; border-radius: 8px;
  transition: color .2s, background .2s;
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 7px;
}
.ni { display: inline-flex; width: 16px; height: 16px; flex-shrink: 0; opacity: .85; }
.ni svg { width: 100%; height: 100%; }
.nav-links a:hover .ni { opacity: 1; }
.nav-links a:hover { color: var(--blue); background: rgba(26, 102, 176, .07); }
.nav-links a.active { color: var(--blue); font-weight: 700; }

/* 语言切换 */
.lang-switcher { position: relative; margin-left: 10px; }
.lang-current {
  display: flex; align-items: center; gap: 6px;
  border: 1px solid var(--border); background: var(--card);
  padding: 7px 12px; border-radius: 8px; cursor: pointer;
  font-size: 13px; color: var(--text); font-weight: 500;
}
.lang-current::after { content: '▾'; font-size: 11px; color: var(--text-secondary); }
.ni-globe { display: inline-flex; width: 15px; height: 15px; color: var(--text-secondary); }
.ni-globe svg { width: 100%; height: 100%; }
.lang-switcher.open .lang-current::after { content: '▴'; }
.lang-menu {
  display: none; position: absolute; right: 0; top: calc(100% + 6px);
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; box-shadow: var(--shadow-hover);
  min-width: 130px; overflow: hidden; z-index: 50;
}
.lang-switcher.open .lang-menu { display: block; }
.lang-btn {
  display: block; width: 100%; text-align: left;
  background: none; border: 0; padding: 9px 16px;
  font-size: 13.5px; color: var(--text); cursor: pointer;
}
.lang-btn:hover { background: rgba(26, 102, 176, .07); }
.lang-btn.active { color: var(--blue); font-weight: 700; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: 0; cursor: pointer; padding: 8px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: .25s; }

/* ---------------- HERO ---------------- */
.hero {
  position: relative; height: min(88vh, 720px); min-height: 520px;
  margin-top: 68px; overflow: hidden;
  background: var(--blue-deep);
}
.hero-slide {
  position: absolute; inset: 0;
  display: flex; align-items: center;
  padding: 0 clamp(20px, 7vw, 110px);
  opacity: 0; transition: opacity 1s ease;
  pointer-events: none;
  background-size: cover;
  background-position: center right;
  background-repeat: no-repeat;
}
.hero-slide.active { opacity: 1; pointer-events: auto; }
.hero-slide .hero-art {
  position: absolute; inset: 0;
  background-size: cover; background-position: center right;
}
.hero-slide .hero-mask {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(8, 30, 56, .93) 0%, rgba(8, 30, 56, .72) 46%, rgba(8, 30, 56, .18) 100%);
}
.hero-content { position: relative; max-width: 640px; color: #fff; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: 3px; color: var(--accent);
  text-transform: uppercase; font-weight: 600; margin-bottom: 18px;
}
.hero-kicker::before { content: ''; width: 34px; height: 2px; background: var(--accent); display: inline-block; }
.hero-title { font-size: clamp(34px, 5vw, 56px); font-weight: 800; line-height: 1.2; letter-spacing: 1px; }
.hero-title .hl { color: var(--accent); }
.hero-desc { margin-top: 18px; font-size: clamp(15px, 1.4vw, 18px); color: rgba(255, 255, 255, .82); max-width: 540px; }
.hero-cta {
  display: inline-block; margin-top: 32px;
  padding: 13px 34px; border-radius: 999px;
  background: linear-gradient(120deg, var(--accent), var(--accent-deep));
  color: #fff; text-decoration: none; font-weight: 600; font-size: 15.5px;
  box-shadow: 0 8px 24px rgba(245, 160, 33, .35);
  transition: transform .2s, box-shadow .2s;
}
.hero-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(245, 160, 33, .5); }

.hero-dots {
  position: absolute; bottom: 30px; left: clamp(20px, 7vw, 110px);
  display: flex; gap: 10px; z-index: 5;
}
.hero-dots button {
  width: 34px; height: 4px; border: 0; border-radius: 2px;
  background: rgba(255, 255, 255, .32); cursor: pointer; transition: .25s;
}
.hero-dots button.active { background: var(--accent); width: 52px; }

/* ---------------- SECTION ---------------- */
.section { padding: clamp(60px, 8vw, 100px) clamp(20px, 7vw, 110px); }
.section.alt { background: var(--card); }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-head { text-align: center; margin-bottom: clamp(36px, 5vw, 60px); }
.section-kicker {
  display: inline-block; font-size: 13px; letter-spacing: 3px;
  color: var(--accent-deep); font-weight: 700; text-transform: uppercase;
  margin-bottom: 10px;
}
.section-title { font-size: clamp(26px, 3.4vw, 38px); color: var(--ink); font-weight: 800; }
.section-sub { margin-top: 12px; color: var(--text-secondary); font-size: 15.5px; max-width: 640px; margin-left: auto; margin-right: auto; }

/* ---------------- ICONS ---------------- */
.pi { display: inline-flex; width: 22px; height: 22px; color: var(--accent-deep); flex-shrink: 0; }
.pi svg { width: 100%; height: 100%; }
.stat-ico {
  width: 42px; height: 42px; margin: 0 auto 10px; border-radius: 12px;
  background: rgba(26, 102, 176, .1); display: flex; align-items: center;
  justify-content: center; color: var(--blue);
}
.stat-ico svg { width: 22px; height: 22px; }
.ind-ico {
  width: 46px; height: 46px; margin: 0 auto 12px; border-radius: 13px;
  background: rgba(255, 255, 255, .13); display: flex; align-items: center;
  justify-content: center; color: var(--accent); position: relative; z-index: 1;
}
.ind-ico svg { width: 24px; height: 24px; }
.biz-ico {
  width: 50px; height: 50px; border-radius: 13px; margin-bottom: 16px;
  background: linear-gradient(140deg, rgba(26,102,176,.12), rgba(245,160,33,.18));
  display: flex; align-items: center; justify-content: center; color: var(--blue);
}
.biz-ico svg { width: 26px; height: 26px; }
.dl-icon svg, .contact-row .ci svg { display: block; }

/* ---------------- STATS ---------------- */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 18px; max-width: 1100px; margin: -56px auto 0;
  position: relative; z-index: 6; padding: 0 clamp(20px, 7vw, 110px);
}
.stat-card {
  background: var(--card); border-radius: var(--radius);
  box-shadow: var(--shadow-hover); padding: 26px 20px; text-align: center;
  border-top: 3px solid var(--accent);
}
.stat-num { font-size: 34px; font-weight: 800; color: var(--blue); }
.stat-num span { color: var(--accent); }
.stat-label { font-size: 13.5px; color: var(--text-secondary); margin-top: 4px; }

/* ---------------- PRODUCT CARDS ---------------- */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.prod-card {
  background: var(--card); border-radius: var(--radius);
  border: 1px solid var(--border); overflow: hidden;
  transition: transform .25s, box-shadow .25s;
  display: flex; flex-direction: column;
}
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.prod-thumb {
  height: 210px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, #fdfefe, #eef3f8);
  border-bottom: 1px solid var(--border);
}
.prod-thumb img { max-height: 170px; width: auto; max-width: 78%; object-fit: contain; transition: transform .3s; }
.prod-card:hover .prod-thumb img { transform: scale(1.06); }
.prod-body { padding: 22px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.prod-name { font-size: 19px; font-weight: 700; color: var(--ink); display: flex; align-items: center; gap: 9px; }
.prod-desc { font-size: 14px; color: var(--text-secondary); margin-top: 8px; flex: 1; }
.prod-link {
  margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--blue);
  text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
}
.prod-link::after { content: '→'; transition: transform .2s; }
.prod-link:hover::after { transform: translateX(4px); }

/* ---------------- FEATURES ---------------- */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feat-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 30px 24px;
  transition: transform .25s, box-shadow .25s;
}
.feat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.feat-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(140deg, rgba(26,102,176,.12), rgba(245,160,33,.14));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; color: var(--blue);
}
.feat-icon svg { width: 26px; height: 26px; }
.feat-title { font-size: 16.5px; font-weight: 700; color: var(--ink); }
.feat-desc { font-size: 13.5px; color: var(--text-secondary); margin-top: 8px; }

/* ---------------- INDUSTRIES ---------------- */
.ind-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.ind-card {
  background: linear-gradient(165deg, var(--blue-dark), var(--blue-deep));
  border-radius: var(--radius); padding: 28px 18px;
  color: #fff; text-align: center; position: relative; overflow: hidden;
  transition: transform .25s;
}
.ind-card:hover { transform: translateY(-5px); }
.ind-card::after {
  content: ''; position: absolute; right: -28px; bottom: -28px;
  width: 90px; height: 90px; border-radius: 50%;
  background: rgba(245, 160, 33, .18);
}
.ind-name { font-size: 16px; font-weight: 700; position: relative; z-index: 1; }
.ind-desc { font-size: 12.5px; color: rgba(255,255,255,.72); margin-top: 8px; position: relative; z-index: 1; }

/* ---------------- CLIENTS ---------------- */
.client-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.client-item {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 18px 12px; text-align: center;
  font-size: 14px; font-weight: 600; color: var(--text);
  transition: border-color .2s, color .2s;
}
.client-item:hover { border-color: var(--accent); color: var(--blue); }

/* ---------------- CTA ---------------- */
.cta-band {
  background: linear-gradient(115deg, var(--blue-deep), var(--blue-dark) 55%, #15548f);
  border-radius: calc(var(--radius) + 6px);
  padding: clamp(40px, 6vw, 70px) clamp(24px, 6vw, 80px);
  display: flex; align-items: center; justify-content: space-between;
  gap: 30px; flex-wrap: wrap; color: #fff;
  position: relative; overflow: hidden;
}
.cta-band::before {
  content: ''; position: absolute; top: -70px; right: -40px;
  width: 240px; height: 240px; border-radius: 50%;
  background: rgba(245, 160, 33, .16);
}
.cta-title { font-size: clamp(22px, 3vw, 30px); font-weight: 800; }
.cta-desc { margin-top: 8px; color: rgba(255,255,255,.78); font-size: 15px; }
.cta-btn {
  flex-shrink: 0; padding: 14px 38px; border-radius: 999px;
  background: linear-gradient(120deg, var(--accent), var(--accent-deep));
  color: #fff; text-decoration: none; font-weight: 700; font-size: 16px;
  box-shadow: 0 8px 24px rgba(245, 160, 33, .35);
  transition: transform .2s;
}
.cta-btn:hover { transform: translateY(-2px); }

/* ---------------- PAGE HERO ---------------- */
.page-hero {
  margin-top: 68px; height: clamp(340px, 46vh, 500px); position: relative;
  background-size: cover; background-position: center 38%;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
}
.page-hero .ph-mask { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(8,30,56,.55), rgba(8,30,56,.72)); }
.page-hero-content { position: relative; color: #fff; }
.page-hero-title { font-size: clamp(30px, 4vw, 42px); font-weight: 800; letter-spacing: 2px; }
.page-hero-sub { margin-top: 8px; font-size: 14px; letter-spacing: 4px; color: rgba(255,255,255,.75); text-transform: uppercase; }

/* ---------------- ABOUT PAGE ---------------- */
.about-cols { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(30px, 5vw, 64px); align-items: start; }
.about-text p { margin-bottom: 18px; font-size: 15.5px; color: var(--text); text-align: justify; }
.about-side { display: flex; flex-direction: column; gap: 20px; }
.about-badge {
  background: linear-gradient(160deg, var(--blue-dark), var(--blue-deep));
  border-radius: var(--radius); padding: 30px 28px; color: #fff;
}
.about-badge .num { font-size: 44px; font-weight: 800; color: var(--accent); }
.about-badge .lbl { font-size: 14px; color: rgba(255,255,255,.8); }
.about-quote {
  border-left: 4px solid var(--accent); background: var(--card);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 22px 24px; font-size: 17px; font-weight: 700; color: var(--ink);
}
.about-quote small { display: block; margin-top: 6px; font-size: 12px; letter-spacing: 2px; color: var(--text-secondary); font-weight: 500; }

.biz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.biz-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 30px;
  border-top: 4px solid var(--blue);
}
.biz-card:nth-child(2) { border-top-color: var(--accent); }
.biz-title { font-size: 19px; font-weight: 700; color: var(--ink); margin-bottom: 10px; }
.biz-desc { font-size: 14.5px; color: var(--text-secondary); }

/* ---------------- PRODUCTS PAGE ---------------- */
.prod-page-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }

/* ---------------- PRODUCT DETAIL ---------------- */
.pd-wrap { max-width: 1000px; margin: 0 auto; }
.pd-head {
  display: flex; gap: clamp(24px, 4vw, 48px); align-items: center;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: clamp(24px, 4vw, 44px);
  margin-bottom: 36px; flex-wrap: wrap;
}
.pd-img {
  flex: 0 0 300px; height: 300px; border-radius: var(--radius);
  background: linear-gradient(160deg, #fdfefe, #eef3f8);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
}
.pd-img img { max-height: 250px; max-width: 86%; object-fit: contain; }
.pd-info { flex: 1; min-width: 260px; }
.pd-cat {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 2px;
  color: var(--accent-deep); background: rgba(245,160,33,.12);
  padding: 4px 12px; border-radius: 999px; text-transform: uppercase;
  margin-bottom: 12px;
}
.pd-name { font-size: clamp(26px, 3vw, 34px); font-weight: 800; color: var(--ink); }
.pd-desc { margin-top: 14px; color: var(--text-secondary); font-size: 15.5px; }
.pd-actions { margin-top: 26px; display: flex; gap: 14px; flex-wrap: wrap; }
.pd-btn {
  padding: 12px 28px; border-radius: 999px; font-weight: 600; font-size: 14.5px;
  text-decoration: none; transition: transform .2s, box-shadow .2s;
}
.pd-btn.primary { background: linear-gradient(120deg, var(--accent), var(--accent-deep)); color: #fff; box-shadow: 0 6px 18px rgba(245,160,33,.32); }
.pd-btn.ghost { border: 1.5px solid var(--blue); color: var(--blue); }
.pd-btn:hover { transform: translateY(-2px); }

.pd-section-title {
  font-size: 22px; font-weight: 800; color: var(--ink);
  margin: 44px 0 20px; padding-left: 14px;
  border-left: 5px solid var(--accent);
}
.pd-desc-imgs { display: flex; flex-direction: column; gap: 14px; }
.pd-desc-imgs img {
  width: 100%; border-radius: 10px; border: 1px solid var(--border);
  background: #fff;
}
.pd-nav {
  display: flex; justify-content: space-between; gap: 16px;
  margin-top: 48px; flex-wrap: wrap;
}
.pd-nav a {
  flex: 1; min-width: 220px; background: var(--card);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 22px; text-decoration: none; color: var(--text);
  font-size: 14.5px; transition: border-color .2s;
}
.pd-nav a:hover { border-color: var(--blue); }
.pd-nav a b { display: block; font-size: 12px; color: var(--text-secondary); font-weight: 500; margin-bottom: 4px; }
.pd-nav a.next { text-align: right; }

/* ---------------- DOWNLOADS ---------------- */
.dl-list { display: flex; flex-direction: column; gap: 14px; }
.dl-item {
  display: flex; align-items: center; gap: 20px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 24px;
  transition: border-color .2s, box-shadow .2s;
}
.dl-item:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.dl-icon {
  flex: 0 0 48px; height: 56px; border-radius: 8px;
  background: linear-gradient(150deg, #e4572e, #c73e1d);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 800; letter-spacing: 1px;
}
.dl-info { flex: 1; min-width: 0; }
.dl-name { font-size: 16px; font-weight: 700; color: var(--ink); word-break: break-all; }
.dl-meta { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }
.dl-btn {
  flex-shrink: 0; padding: 10px 24px; border-radius: 999px;
  border: 1.5px solid var(--blue); color: var(--blue);
  text-decoration: none; font-weight: 600; font-size: 14px;
  transition: .2s;
}
.dl-btn:hover { background: var(--blue); color: #fff; }

/* ---------------- CONTACT ---------------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 26px; align-items: stretch; }
.contact-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: clamp(26px, 4vw, 40px);
}
.contact-row { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px dashed var(--border); }
.contact-row:last-child { border-bottom: 0; }
.contact-row .ci {
  flex: 0 0 44px; height: 44px; border-radius: 12px;
  background: linear-gradient(140deg, rgba(26,102,176,.12), rgba(245,160,33,.16));
  display: flex; align-items: center; justify-content: center; color: var(--blue);
}
.contact-row .ci svg { width: 20px; height: 20px; }
.contact-row .cl { font-size: 13px; color: var(--text-secondary); }
.contact-row .cv { font-size: 15.5px; font-weight: 600; color: var(--ink); word-break: break-all; }
.contact-map {
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border);
  background: #e9eef4;
  /* 网格默认 stretch，与左侧信息卡同高；图片 cover 填满 */
}
.contact-map img { width: 100%; height: 100%; object-fit: cover; border: 0; display: block; }
.contact-map a { display: block; height: 100%; }

/* ---------------- FOOTER ---------------- */
footer {
  background: linear-gradient(180deg, var(--blue-deep), #071f3a);
  color: rgba(255, 255, 255, .75);
  padding: clamp(44px, 6vw, 72px) clamp(20px, 7vw, 110px) 28px;
  margin-top: clamp(60px, 8vw, 100px);
}
.footer-grid {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px;
}
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer-brand img { height: 42px; }
.footer-brand b { color: #fff; font-size: 16.5px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; font-weight: 700; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; font-size: 14px; }
.footer-col a { color: rgba(255,255,255,.72); text-decoration: none; }
.footer-col a:hover { color: var(--accent); }
.footer-contact li { display: flex; gap: 8px; align-items: flex-start; }
.footer-contact .lab { color: var(--accent); flex-shrink: 0; }
.footer-bottom {
  max-width: 1200px; margin: 36px auto 0;
  padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12);
  font-size: 12.5px; color: rgba(255,255,255,.5);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.footer-bottom a { color: rgba(255,255,255,.5); text-decoration: none; }
.footer-bottom a:hover { color: var(--accent); }

/* ---------------- REVEAL ANIMATION ---------------- */
/* 仅在有 JS 时隐藏，避免无 JS/截图场景下内容不可见 */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.visible { opacity: 1; transform: none; }

/* ---------------- RESPONSIVE ---------------- */
@media (max-width: 1024px) {
  .prod-grid, .prod-page-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .ind-grid, .client-grid { grid-template-columns: repeat(3, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .about-cols, .biz-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed; top: 68px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 12px 20px 20px; gap: 2px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-130%); transition: transform .3s;
    box-shadow: var(--shadow-hover);
  }
  .nav-links.open { transform: none; }
  .lang-switcher { margin: 6px 0 0; }
  .prod-grid, .prod-page-grid, .feat-grid { grid-template-columns: 1fr; }
  .ind-grid { grid-template-columns: repeat(2, 1fr); }
  .client-grid { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); margin-top: -40px; }
  .hero { min-height: 560px; }
  .pd-img { flex-basis: 100%; height: 240px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}