/* ===================================================
   ZY Crankshaft 轴云工业 — zy-crankshaft.com
   多页面 · 中英日三语 · 深蓝 + 橙红
   =================================================== */

:root {
  --navy-900: #16283c;   /* 深石墨蓝 · 主色 */
  --navy-800: #1d3247;
  --navy-700: #26405a;
  --navy-600: #33506f;
  --ink: #1b232f;
  --gray-bg: #f5f6f8;
  --line: #e4e8ed;
  --muted: #6d7887;
  --accent: #e8792d;      /* 工程橙 */
  --accent-dark: #cf6420;
  --text: #1b232f;
  --text-light: #eef1f5;
  --text-dim: #a9b4c2;
  --radius: 6px;
  --container: 1200px;
  --header-h: 76px;
  --font-display: "Rajdhani", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans", "Yu Gothic", "Meiryo", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: #fff;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- i18n: 中 / EN / 日 ---------- */
body.lang-en .zh, body.lang-en .ja,
body.lang-ja .zh, body.lang-ja .en,
body.lang-zh .en, body.lang-zh .ja { display: none !important; }

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

/* 展示字体：标题 / 数字 / 按钮（拉丁字符用 Rajdhani，中文回退 Noto Sans SC） */
h1, h2, h3, h4, .stat .num, .exh-item .date .d1, .flow .step::before {
  font-family: var(--font-display);
}

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy-900);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.28);
}
.nav-wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 18px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand img {
  height: 48px; width: 48px; object-fit: contain;
}
.brand-name { display: flex; flex-direction: column; line-height: 1.15; font-family: var(--font-display); }
.brand-name .t1 { color: #fff; font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.brand-name .t2 { color: var(--accent); font-size: 11.5px; font-weight: 600; letter-spacing: 2.2px; }

nav.main-nav { margin-left: auto; }
nav.main-nav ul { display: flex; align-items: center; gap: 2px; }
nav.main-nav a {
  display: block;
  position: relative;
  color: #d3dae4;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  padding: 12px 14px;
  transition: color 0.2s;
}
nav.main-nav a::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 4px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.25s;
}
nav.main-nav a:hover { color: #fff; }
nav.main-nav a:hover::after,
nav.main-nav a.active::after { transform: scaleX(1); }
nav.main-nav a.active { color: #fff; font-weight: 600; }

.lang-switch { display: flex; align-items: center; gap: 2px; flex-shrink: 0; margin-left: 10px; }
.lang-switch button {
  background: none; border: none; cursor: pointer;
  color: var(--text-dim); font-size: 13.5px; font-weight: 600;
  padding: 6px 9px; border-radius: 4px; transition: all 0.2s;
}
.lang-switch button:hover { color: #fff; }
.lang-switch button.active { color: var(--accent); }
.lang-switch button + button { border-left: 1px solid rgba(255, 255, 255, 0.14); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; margin-left: auto; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; }

/* ============ Buttons ============ */
.btn {
  display: inline-block; padding: 12px 30px; border-radius: 4px;
  font-family: var(--font-display);
  font-size: 16px; font-weight: 600; letter-spacing: 0.5px;
  border: none; cursor: pointer; transition: all 0.25s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-outline { border: 1px solid rgba(255, 255, 255, 0.55); color: #fff; background: transparent; }
.btn-outline:hover { background: rgba(255, 255, 255, 0.12); }
.btn-ghost-dark { border: 1px solid var(--accent); color: var(--accent); background: transparent; }
.btn-ghost-dark:hover { background: var(--accent); color: #fff; }

/* ============ Home hero ============ */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex; align-items: center;
  color: #fff;
  background:
    linear-gradient(95deg, rgba(13, 23, 36, 0.55) 20%, rgba(13, 23, 36, 0.18) 60%, rgba(13, 23, 36, 0.06)),
    url("../img/hero-3cyl.jpg") center 40% / cover no-repeat;
  padding: 100px 0;
}
.hero .badge {
  display: inline-block;
  border: 1px solid rgba(232, 121, 45, 0.65);
  color: #f5b183;
  font-size: 12.5px; letter-spacing: 3px;
  padding: 5px 16px; border-radius: 20px; margin-bottom: 24px;
}
.hero h1 { font-size: clamp(32px, 5vw, 56px); line-height: 1.18; font-weight: 700; max-width: 780px; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero p.lead { margin-top: 20px; max-width: 660px; color: #c3cdd9; font-size: 16.5px; }
.hero .cta-row { margin-top: 38px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ============ 首页公司简介（头部横幅） ============ */
.intro-band { background: #fff; padding: 56px 0 50px; border-bottom: 1px solid var(--line); }
.intro-inner { display: grid; grid-template-columns: 232px 1fr; gap: 48px; align-items: start; }
.intro-label { position: relative; padding-left: 18px; }
.intro-label::before {
  content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 3px;
  background: var(--accent); border-radius: 2px;
}
.intro-label .k { font-family: var(--font-display); font-size: 12.5px; font-weight: 700; letter-spacing: 2.5px; color: var(--accent); display: block; }
.intro-label h3 { font-size: 23px; color: var(--navy-900); margin-top: 9px; letter-spacing: 0.5px; line-height: 1.4; }
.intro-body p.intro-text { font-size: 16.5px; line-height: 1.95; color: #47515e; }
.intro-body p.intro-text b { color: var(--navy-900); font-weight: 700; }
.intro-meta {
  display: flex; flex-wrap: wrap; gap: 10px 34px;
  margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line);
}
.intro-meta > span { font-size: 14px; color: var(--muted); display: inline-flex; align-items: center; gap: 8px; }
.intro-meta > span::before { content: ""; width: 6px; height: 6px; background: var(--accent); display: block; flex: none; }
.intro-meta b { color: var(--navy-900); font-weight: 700; }

/* ============ Page hero (sub pages) ============ */
.page-hero {
  position: relative;
  color: #fff;
  padding: 66px 0 62px;
  background: linear-gradient(95deg, rgba(13, 23, 36, 0.95) 18%, rgba(13, 23, 36, 0.72) 60%, rgba(13, 23, 36, 0.55)), var(--ph-img) center / cover no-repeat;
}
.page-hero .crumb { font-size: 13px; color: #9fabb9; letter-spacing: 1px; margin-bottom: 16px; }
.page-hero .crumb a:hover { color: var(--accent); }
.page-hero .crumb .sep { margin: 0 8px; opacity: 0.55; }
.page-hero h1 { font-size: clamp(28px, 3.8vw, 42px); font-weight: 700; letter-spacing: 0.5px; }
.page-hero p.desc { margin-top: 16px; max-width: 780px; color: #c3cdd9; font-size: 15.5px; }

/* ============ Sections ============ */
section { padding: 82px 0; }
.section-gray { background: var(--gray-bg); }
.section-navy { background: var(--navy-900); color: var(--text-light); }
.section-head { text-align: center; margin-bottom: 52px; }
.section-head.left { text-align: left; margin-bottom: 34px; }
.section-head .kicker {
  display: inline-block; color: var(--accent);
  font-size: 12.5px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; margin-bottom: 10px;
}
.section-head h2 { font-size: clamp(24px, 3.2vw, 34px); letter-spacing: 0.5px; }
.section-head p.sub { color: var(--muted); margin-top: 10px; font-size: 15px; }
.section-navy .section-head p.sub { color: var(--text-dim); }
.section-navy .section-head h2 { color: #fff; }

/* ============ Cards & grids ============ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; transition: transform 0.25s, box-shadow 0.25s;
}
.feature:hover { transform: translateY(-5px); box-shadow: 0 14px 34px rgba(20, 31, 49, 0.12); }
.feature .f-ico {
  width: 46px; height: 46px; border-radius: 8px;
  background: rgba(232, 121, 45, 0.12); color: var(--accent);
  display: grid; place-items: center; font-size: 21px; margin-bottom: 16px;
}
.feature h3 { font-size: 17.5px; margin-bottom: 8px; }
.feature p { font-size: 14.5px; color: var(--muted); }

/* Product cards */
.product-card {
  background: var(--navy-800); border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius); overflow: hidden; transition: transform 0.3s, box-shadow 0.3s;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 18px 44px rgba(0, 0, 0, 0.45); }
.product-card .thumb img { width: 100%; aspect-ratio: 1 / 0.88; object-fit: cover; transition: transform 0.5s; }
.product-card:hover .thumb img { transform: scale(1.05); }
.product-card .body { padding: 22px 22px 26px; }
.product-card h3 { color: #fff; font-size: 19px; margin-bottom: 4px; }
.product-card .en-name { color: var(--text-dim); font-size: 12px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 12px; }
.product-card p { color: #b6c1cf; font-size: 14.5px; }
.product-card .tags { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.product-card .tags span { font-size: 12px; color: #d8dee4; border: 1px solid rgba(255, 255, 255, 0.18); padding: 3px 10px; border-radius: 14px; }

/* Equipment cards */
.equip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.equip-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform 0.25s, box-shadow 0.25s; }
.equip-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(20, 31, 49, 0.14); }
.equip-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.equip-card .body { padding: 15px 17px 19px; }
.equip-card h4 { font-size: 15px; margin-bottom: 3px; }
.equip-card p { font-size: 12.8px; color: var(--muted); }
.section-navy .equip-card { background: var(--navy-800); border-color: rgba(255, 255, 255, 0.09); }
.section-navy .equip-card h4 { color: #fff; }
.section-navy .equip-card p { color: var(--text-dim); }

.equip-subhead {
  margin: 0 0 24px; font-size: 19px;
  display: flex; align-items: center; gap: 12px;
}
.equip-subhead::before { content: ""; width: 4px; height: 20px; background: var(--accent); border-radius: 2px; }
.equip-subhead:not(:first-of-type) { margin-top: 52px; }

/* ============ Process flow ============ */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; counter-reset: step; }
.flow .step {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 16px 22px; text-align: center; position: relative;
}
.flow .step::before {
  counter-increment: step; content: "0" counter(step);
  display: block; font-size: 12px; font-weight: 700; letter-spacing: 1px;
  color: var(--accent); margin-bottom: 10px;
}
.flow .step h4 { font-size: 15px; margin-bottom: 6px; }
.flow .step p { font-size: 12.8px; color: var(--muted); }
.flow .step::after {
  content: "›"; position: absolute; right: -12px; top: 50%; transform: translateY(-50%);
  color: #c9d1da; font-size: 22px; font-weight: 700;
}
.flow .step:last-child::after { content: none; }

/* ============ Stats ============ */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 18px; text-align: center; }
.stat .num { font-size: 32px; font-weight: 700; color: var(--accent); line-height: 1.25; }
.stat .label { font-size: 13.5px; color: var(--muted); margin-top: 6px; }
.section-navy .stat { background: var(--navy-800); border-color: rgba(255, 255, 255, 0.09); }
.section-navy .stat .label { color: var(--text-dim); }

/* ============ About layout ============ */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 52px; align-items: center; }
.split img { border-radius: var(--radius); }
.split .txt h2 { font-size: clamp(23px, 3vw, 32px); margin-bottom: 18px; }
.split .txt p { color: #47515e; margin-bottom: 14px; font-size: 15.5px; }
.split .txt ul.checklist li { position: relative; padding-left: 28px; margin-bottom: 9px; font-size: 15px; color: #333c48; }
.split .txt ul.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }

/* 公司简介：双栏正文 */
.prose-cols { columns: 2; column-gap: 56px; }
.prose-cols p { color: #47515e; font-size: 15.5px; line-height: 1.88; margin: 0 0 18px; break-inside: avoid; }
.prose-cols p:last-child { margin-bottom: 0; }

/* 公司档案：成立/基地/产能 */
.profile-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.fact { border-left: 3px solid var(--accent); padding: 4px 0 4px 18px; }
.fact .f-k { font-size: 12.5px; letter-spacing: 1.5px; color: var(--muted); }
.fact .f-v { font-size: 19px; font-weight: 700; color: var(--navy-800); margin-top: 6px; line-height: 1.4; }

/* 产品详情块 */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; align-items: center; padding: 44px 0; border-bottom: 1px solid var(--line); }
.product-detail:last-of-type { border-bottom: none; }
.product-detail .pd-img {
  border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(160deg, #17202e, #0d141f);
}
.product-detail .pd-img img { width: 100%; display: block; }
.product-detail .pd-img.duo { display: grid; grid-template-columns: 1fr 1fr; }
.product-detail .pd-img.duo img { aspect-ratio: 1 / 0.82; object-fit: cover; }
.product-detail .pd-img.duo img:first-child { border-right: 1px solid #fff; }
.product-detail h3 { font-size: 25px; margin-bottom: 6px; }
.product-detail .en-name { color: var(--accent); font-size: 12.5px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 16px; }
.product-detail p.pd-desc { color: #47515e; font-size: 15.5px; margin-bottom: 18px; }
.spec-list { border-top: 1px solid var(--line); }
.spec-list li { display: flex; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.spec-list li .k { width: 140px; flex-shrink: 0; color: var(--muted); }
.spec-list li .v { color: var(--ink); font-weight: 600; }

/* ============ Gallery ============ */
.gallery-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; }
.g-item { position: relative; overflow: hidden; border-radius: var(--radius); cursor: pointer; }
.g-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.g-item:hover img { transform: scale(1.04); }
.g-item figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: linear-gradient(transparent, rgba(10, 18, 28, 0.88));
  color: #fff; font-size: 13.5px; padding: 28px 15px 11px;
}
.g-wide { grid-column: span 8; aspect-ratio: 16 / 8.4; }
.g-tall { grid-column: span 4; aspect-ratio: 8 / 8.4; }
.g-half { grid-column: span 6; aspect-ratio: 16 / 8; }
.g-full { grid-column: span 12; aspect-ratio: 16 / 7.2; }

/* ============ Exhibitions ============ */
.exh-item {
  display: grid; grid-template-columns: 132px 1fr; gap: 24px; align-items: center;
  background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: var(--radius); padding: 24px 28px; margin-bottom: 16px;
  transition: box-shadow 0.25s, transform 0.25s;
}
.exh-item:hover { box-shadow: 0 14px 32px rgba(20, 31, 49, 0.12); transform: translateX(3px); }
.exh-item .date { text-align: center; }
.exh-item .date .d1 { font-size: 24px; font-weight: 700; color: var(--accent); line-height: 1.2; }
.exh-item .date .d2 { font-size: 13px; color: var(--muted); }
.exh-item h3 { font-size: 17px; margin-bottom: 4px; }
.exh-item .loc { font-size: 14px; color: var(--muted); }
.tag-upcoming {
  display: inline-block; margin-left: 10px; vertical-align: middle;
  background: rgba(232, 121, 45, 0.12); color: var(--accent);
  font-size: 12px; font-weight: 600; padding: 2px 10px; border-radius: 12px;
}

/* ============ News ============ */
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform 0.25s, box-shadow 0.25s; }
.news-card:hover { transform: translateY(-5px); box-shadow: 0 14px 34px rgba(20, 31, 49, 0.12); }
.news-card .nc-body { padding: 22px 22px 24px; }
.news-card .nc-date { font-size: 12.5px; color: var(--accent); letter-spacing: 1px; font-weight: 600; }
.news-card h3 { font-size: 17px; margin: 8px 0 10px; line-height: 1.5; }
.news-card p { font-size: 14px; color: var(--muted); }
.news-card .nc-thumb { aspect-ratio: 16 / 9; overflow: hidden; }
.news-card .nc-thumb img { width: 100%; height: 100%; object-fit: cover; }

/* ============ Contact ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 52px; }
.contact-info h2 { font-size: clamp(23px, 3vw, 32px); margin-bottom: 16px; }
.contact-info > p { color: var(--text-dim); margin-bottom: 26px; font-size: 15px; }
.contact-info ul li { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 18px; font-size: 15px; color: #d6dce4; }
.contact-info .ico {
  width: 40px; height: 40px; flex-shrink: 0; border-radius: 8px;
  background: rgba(232, 121, 45, 0.16); display: grid; place-items: center; font-size: 17px;
}
.contact-form { background: #fff; color: var(--text); border-radius: var(--radius); padding: 32px; box-shadow: 0 18px 44px rgba(0, 0, 0, 0.32); }
.contact-form h3 { font-size: 18.5px; margin-bottom: 18px; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; padding: 12px 14px; margin-bottom: 14px;
  border: 1px solid var(--line); border-radius: 4px; background: var(--gray-bg);
  font-size: 14.5px; font-family: inherit; color: var(--text);
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form .btn { width: 100%; }

/* ============ 经营理念 ============ */
.philosophy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.philo-card {
  position: relative; overflow: hidden;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 30px 30px; transition: transform 0.25s, box-shadow 0.25s;
}
.philo-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--accent);
}
.philo-card::after {
  content: attr(data-num); position: absolute; right: 20px; top: 12px;
  font-family: var(--font-display); font-size: 46px; font-weight: 700;
  color: rgba(22, 40, 60, 0.06); line-height: 1;
}
.philo-card:hover { transform: translateY(-5px); box-shadow: 0 14px 34px rgba(22, 40, 60, 0.13); }
.philo-card .p-label {
  font-family: var(--font-display); font-size: 13px; font-weight: 700;
  letter-spacing: 2.5px; color: var(--accent); text-transform: uppercase; margin-bottom: 12px;
}
.philo-card .p-slogan {
  font-family: var(--font-display); font-size: 21px; font-weight: 700;
  color: var(--navy-900); line-height: 1.55; letter-spacing: 0.5px;
}
.philo-card .p-slogan .dot { color: var(--accent); margin: 0 4px; }

/* ============ CTA band ============ */
.cta-band {
  background: linear-gradient(100deg, var(--navy-900) 0%, var(--navy-700) 100%);
  color: #fff; padding: 60px 0;
}
.cta-band .inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-band h2 { font-size: clamp(21px, 2.6vw, 29px); }
.cta-band p { color: var(--text-dim); margin-top: 8px; font-size: 15px; }

/* ============ Footer ============ */
.site-footer { background: #101c2a; color: #8d97a5; font-size: 13.5px; padding: 52px 0 24px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 34px; padding-bottom: 34px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.footer-top .f-brand { display: flex; align-items: center; gap: 11px; color: #fff; font-weight: 700; font-size: 16px; margin-bottom: 14px; }
.footer-top .f-brand img { height: 34px; object-fit: contain; }
.footer-col h4 { color: #fff; font-size: 14.5px; margin-bottom: 14px; }
.footer-col li { margin-bottom: 9px; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 20px; font-size: 13px; }
.footer-legal { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.footer-legal a { color: inherit; text-decoration: none; }
.footer-legal a:hover { color: var(--accent); }

/* ============ Lightbox ============ */
.lightbox { position: fixed; inset: 0; background: rgba(6, 10, 17, 0.93); display: none; place-items: center; z-index: 200; cursor: zoom-out; padding: 28px; }
.lightbox.open { display: grid; }
.lightbox img { max-width: 92vw; max-height: 88vh; border-radius: 4px; }

/* ============ Reveal ============ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ============ Responsive ============ */
@media (max-width: 1080px) {
  .equip-grid, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .philosophy-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .flow .step::after { content: none; }
  .split, .contact-grid, .product-detail { grid-template-columns: 1fr; gap: 34px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .g-wide, .g-tall, .g-half, .g-full { grid-column: span 12; }
}
@media (max-width: 820px) {
  nav.main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    background: var(--navy-800); display: none;
    padding: 10px 18px 18px; border-top: 1px solid rgba(255, 255, 255, 0.08);
    max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  }
  nav.main-nav.open { display: block; }
  nav.main-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  nav.main-nav a { padding: 13px 6px; font-size: 15.5px; }
  nav.main-nav a::after { left: 6px; right: auto; width: 26px; }
  .nav-toggle { display: block; }
  .lang-switch { margin-left: 0; }
  .prose-cols { columns: 1; }
  .profile-facts { grid-template-columns: 1fr; gap: 16px; margin-top: 32px; }
  .intro-inner { grid-template-columns: 1fr; gap: 22px; }
  .intro-band { padding: 44px 0 40px; }
  .intro-body p.intro-text { font-size: 15.5px; }
}
@media (max-width: 680px) {
  section { padding: 58px 0; }
  .hero {
    background:
      linear-gradient(180deg, rgba(13, 23, 36, 0.72), rgba(13, 23, 36, 0.45) 55%, rgba(13, 23, 36, 0.65)),
      url("../img/hero-3cyl.jpg") 62% 40% / cover no-repeat;
  }
  .grid-3, .grid-4, .equip-grid, .philosophy-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .exh-item { grid-template-columns: 1fr; }
  .exh-item .date { text-align: left; display: flex; gap: 8px; align-items: baseline; }
  .footer-top { grid-template-columns: 1fr; }
  .product-detail { padding: 30px 0; }
  .contact-form { padding: 22px; }
}