/* =========================================================
   Atlas Automotive Holdings — Official Website
   Design system: Trust & Authority / Enterprise Gateway
   Palette: 深海蓝 #0F2B4D · 科技蓝 #1E5B9C · 浅灰蓝 #F5F8FC · 工业琥珀 #F2A516
   Type: Lexend (headings) + Source Sans 3 (body), CJK system fallback
   ========================================================= */

:root {
  /* Brand colors */
  --navy-950: #021634;
  --navy-900: #06214A;
  --navy-800: #0F2B4D;
  --navy-700: #173F75;
  --blue-600: #1E5B9C;
  --blue-500: #2A6FBD;
  --blue-300: #8FC1F5;
  --blue-100: #E4EEFA;
  --amber-500: #F2A516;
  --amber-400: #F7B93E;

  /* Semantic */
  --bg: #FFFFFF;
  --bg-soft: #F5F8FC;
  --ink-900: #0B1B2E;
  --ink-700: #334155;
  --ink-500: #56657A;
  --line: #E2E8F0;
  --line-strong: #CBD5E1;
  --on-dark: #FFFFFF;
  --on-dark-muted: rgba(222, 234, 248, 0.78);
  --on-dark-line: rgba(255, 255, 255, 0.12);
  --danger: #C62828;
  --success-bg: #ECFDF3;
  --success-line: #A7E3C0;
  --success-ink: #14532D;

  /* Shape & depth */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(11, 27, 46, 0.06), 0 1px 3px rgba(11, 27, 46, 0.08);
  --shadow-md: 0 12px 28px -12px rgba(11, 27, 46, 0.22);
  --shadow-lg: 0 30px 60px -24px rgba(11, 27, 46, 0.35);

  /* Type */
  --font-head: "Lexend", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --font-body: "Source Sans 3", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Layout */
  --header-h: 76px;
  --container: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --section-y: clamp(72px, 9vw, 120px);

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 220ms;

  /* z-index scale */
  --z-header: 100;
  --z-drawer: 200;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink-700);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, picture { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure, blockquote { margin: 0; }
h1, h2, h3, h4 { font-family: var(--font-head); color: var(--ink-900); line-height: 1.25; font-weight: 600; }
[hidden] { display: none !important; }
section[id], article[id] { scroll-margin-top: calc(var(--header-h) + 8px); }
:focus-visible { outline: 3px solid var(--blue-500); outline-offset: 3px; border-radius: 4px; }
.section--dark :focus-visible, .hero :focus-visible, .site-header :focus-visible, .site-footer :focus-visible { outline-color: var(--blue-300); }

/* 语言切换前隐藏，避免英文闪一下（2s 兜底） */
.i18n-pending body { visibility: hidden; }

/* 俄语：Lexend 不含西里尔字母，标题改用 Manrope */
html:lang(ru) { --font-head: "Manrope", "Source Sans 3", system-ui, sans-serif; }
/* 阿拉伯语：专用字体；字距必须为 0，否则会打断字母连写 */
html:lang(ar) {
  --font-head: "IBM Plex Sans Arabic", "Lexend", system-ui, sans-serif;
  --font-body: "IBM Plex Sans Arabic", "Source Sans 3", system-ui, sans-serif;
}
:lang(ar) body { line-height: 1.85; }
:lang(ar) h1, :lang(ar) h2, :lang(ar) h3 { line-height: 1.4; }
:lang(ar) *, :lang(ar) *::before, :lang(ar) *::after { letter-spacing: 0 !important; }

/* CJK 细节：中文不需要负字距，行高略放大 */
:lang(zh) body { line-height: 1.8; }
:lang(zh) h1, :lang(zh) h2, :lang(zh) h3 { letter-spacing: 0.01em !important; }

.container { width: min(100% - var(--gutter) * 2, var(--container)); margin-inline: auto; }
.icon { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.icon--sm { width: 18px; height: 18px; }
.icon--xs { width: 14px; height: 14px; stroke-width: 2.25; }

.skip-link {
  position: absolute; inset-inline-start: 16px; top: -60px; z-index: 1000;
  padding: 10px 16px; border-radius: var(--radius-sm);
  background: var(--amber-500); color: var(--navy-950); font-weight: 600;
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 24px;
  border: 1px solid transparent; border-radius: 10px;
  font-family: var(--font-head); font-weight: 500; font-size: 0.97rem; line-height: 1.2;
  text-align: center; white-space: nowrap;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
  touch-action: manipulation;
}
.btn .icon { transition: transform var(--dur) var(--ease); }
.btn:hover .icon { transform: translateX(3px); }
.btn:active { transform: scale(0.98); }
.btn--accent { background: var(--amber-500); color: var(--navy-950); }
.btn--accent:hover { background: var(--amber-400); box-shadow: 0 10px 24px -10px rgba(242, 165, 22, 0.65); }
.btn--ghost { border-color: rgba(255, 255, 255, 0.35); color: #fff; background: rgba(255, 255, 255, 0.04); }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: rgba(255, 255, 255, 0.6); }
.btn--lg { min-height: 54px; padding: 0 28px; font-size: 1rem; }
.btn--sm { min-height: 42px; padding: 0 18px; font-size: 0.92rem; }
.btn--block { width: 100%; }

.link-arrow { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-head); font-weight: 500; }
.link-arrow .icon { transition: transform var(--dur) var(--ease); }
.link-arrow:hover .icon { transform: translateX(4px); }
.link-arrow--light { color: #fff; }
.link-arrow--light:hover { color: var(--amber-400); }

/* ---------- Shared section typography ---------- */
.section { padding-block: var(--section-y); position: relative; }
.section--soft { background: var(--bg-soft); }
.section--dark {
  color: var(--on-dark-muted);
  background:
    radial-gradient(900px 480px at 88% -8%, rgba(42, 111, 189, 0.32), transparent 65%),
    linear-gradient(180deg, var(--navy-900), var(--navy-950));
}
.section--dark h2, .section--dark h3 { color: var(--on-dark); }

.kicker {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-head); font-weight: 600; font-size: 0.8125rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--blue-600);
}
.kicker::before { content: ""; width: 28px; height: 2px; background: var(--amber-500); border-radius: 2px; }
.section--dark .kicker { color: var(--blue-300); }
.section-head--center .kicker { justify-content: center; }

.section-title {
  margin-top: 14px;
  font-size: clamp(1.8rem, 1.2rem + 1.9vw, 2.75rem);
  line-height: 1.18; letter-spacing: -0.018em;
  text-wrap: balance;
}
.section-lead { margin-top: 16px; font-size: 1.125rem; color: var(--ink-500); max-width: 62ch; }
.section--dark .section-lead { color: var(--on-dark-muted); }

.section-head { max-width: 780px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .section-lead { margin-inline: auto; }
.section-head--split {
  max-width: none; display: grid; grid-template-columns: 1.1fr 1fr; gap: 24px 64px; align-items: end;
}
.section-head--split .section-lead { margin-top: 0; }

.icon-tile {
  display: inline-grid; place-items: center; width: 48px; height: 48px; flex-shrink: 0;
  border-radius: 12px; background: var(--blue-100); color: var(--blue-600);
}
.icon-tile--sm { width: 42px; height: 42px; border-radius: 10px; }
.icon-tile--sm .icon { width: 21px; height: 21px; }
.icon-tile--navy { background: var(--navy-800); color: #fff; }
.icon-tile--dark { background: rgba(143, 193, 245, 0.1); color: var(--blue-300); box-shadow: inset 0 0 0 1px rgba(143, 193, 245, 0.22); }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: var(--z-header);
  height: var(--header-h); color: #fff;
  transition: background-color 300ms var(--ease), box-shadow 300ms var(--ease), border-color 300ms var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(4, 25, 58, 0.9);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 30px -18px rgba(0, 0, 0, 0.6);
}
.header__inner { height: 100%; display: flex; align-items: center; gap: 24px; }

.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 0; }
.brand__mark { width: 40px; height: 40px; flex-shrink: 0; }
.brand__text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.brand__en { font-family: var(--font-head); font-weight: 600; font-size: 1rem; letter-spacing: -0.005em; color: #fff; white-space: nowrap; }
.brand__zh { font-size: 0.78rem; letter-spacing: 0.14em; color: rgba(255, 255, 255, 0.72); white-space: nowrap; }

.main-nav { margin-inline-start: auto; }
.main-nav__list { display: flex; align-items: center; gap: 2px; }
.nav-link {
  position: relative; display: inline-flex; align-items: center; gap: 6px;
  min-height: 44px; padding: 0 13px; white-space: nowrap;
  font-family: var(--font-head); font-size: 0.92rem; font-weight: 500;
  color: rgba(255, 255, 255, 0.8); transition: color var(--dur) var(--ease);
}
.nav-link::after {
  content: ""; position: absolute; inset-inline: 13px; bottom: 6px; height: 2px;
  background: var(--amber-500); border-radius: 2px;
  transform: scaleX(0); transform-origin: left; transition: transform var(--dur) var(--ease);
}
.nav-link:hover, .nav-link.is-active { color: #fff; }
.nav-link.is-active::after { transform: scaleX(1); }
/* 「核心业务」高亮 */
.nav-link--featured { color: #fff; }
.nav-link--featured::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--amber-500);
  box-shadow: 0 0 0 3px rgba(242, 165, 22, 0.2);
}
.nav-link--featured::after { inset-inline-start: 25px; }

.has-dropdown { position: relative; }
.dropdown {
  position: absolute; top: 100%; left: 50%; min-width: 290px; padding-top: 10px;
  opacity: 0; visibility: hidden; transform: translate(-50%, 6px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
}
.has-dropdown:hover .dropdown, .has-dropdown:focus-within .dropdown { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.has-dropdown:hover .nav-link .icon, .has-dropdown:focus-within .nav-link .icon { transform: rotate(180deg); }
.nav-link .icon { transition: transform var(--dur) var(--ease); }
.dropdown__list { background: #fff; border-radius: var(--radius); padding: 8px; box-shadow: var(--shadow-lg); border: 1px solid var(--line); }
.dropdown__link {
  display: flex; align-items: center; gap: 12px; min-height: 46px; padding: 8px 12px; border-radius: 10px;
  font-family: var(--font-head); font-size: 0.92rem; font-weight: 500; color: var(--ink-900);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.dropdown__link .icon { color: var(--blue-600); width: 20px; height: 20px; }
.dropdown__link:hover { background: var(--bg-soft); color: var(--blue-600); }
.dropdown__link--featured { background: var(--blue-100); }
.dropdown__sep { height: 1px; background: var(--line); margin: 6px 8px; }

.header__actions { display: flex; align-items: center; gap: 12px; }
.main-nav + .header__actions { margin-inline-start: 8px; }

.lang { position: relative; }
.lang__btn {
  display: inline-flex; align-items: center; gap: 6px; min-height: 42px; padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.24); border-radius: 10px;
  font-family: var(--font-head); font-size: 0.86rem; font-weight: 500; color: #fff;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.lang__btn:hover, .lang__btn[aria-expanded="true"] { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.45); }
.lang__chev { transition: transform var(--dur) var(--ease); }
.lang__btn[aria-expanded="true"] .lang__chev { transform: rotate(180deg); }
.lang__menu {
  position: absolute; inset-inline-end: 0; top: calc(100% + 10px); min-width: 190px; padding: 6px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
}
.lang.is-open .lang__menu { opacity: 1; visibility: visible; transform: none; }
.lang__option {
  display: flex; align-items: center; justify-content: space-between; width: 100%;
  min-height: 44px; padding: 0 12px; border-radius: 10px;
  font-size: 0.97rem; color: var(--ink-900); text-align: start;
  transition: background-color var(--dur) var(--ease);
}
.lang__option:hover { background: var(--bg-soft); }
.lang__option .icon { color: var(--blue-600); opacity: 0; }
.lang__option[aria-current="true"] { font-weight: 600; color: var(--blue-600); }
.lang__option[aria-current="true"] .icon { opacity: 1; }

.menu-toggle {
  display: none; place-items: center; width: 44px; height: 44px; border-radius: 10px; color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.24);
}
.menu-toggle:hover { background: rgba(255, 255, 255, 0.1); }

/* ---------- Mobile drawer ---------- */
.mobile-nav { position: fixed; inset: 0; z-index: var(--z-drawer); }
.mobile-nav__backdrop { position: absolute; inset: 0; background: rgba(2, 12, 28, 0.55); opacity: 0; transition: opacity 260ms var(--ease); }
.mobile-nav__panel {
  position: absolute; top: 0; right: 0; bottom: 0; width: min(88vw, 380px);
  display: flex; flex-direction: column; gap: 20px; padding: 16px 20px 24px;
  background: var(--navy-900); color: #fff; overflow-y: auto; overscroll-behavior: contain;
  transform: translateX(100%); transition: transform 300ms var(--ease);
}
.mobile-nav.is-open .mobile-nav__backdrop { opacity: 1; }
.mobile-nav.is-open .mobile-nav__panel { transform: none; }
.mobile-nav__head { display: flex; align-items: center; justify-content: space-between; min-height: 48px; }
.menu-toggle--close { display: grid; }
.mobile-nav__links { display: flex; flex-direction: column; }
.mobile-nav__links > a {
  display: flex; align-items: center; min-height: 52px;
  font-family: var(--font-head); font-size: 1.05rem; font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08); color: rgba(255, 255, 255, 0.9);
}
.mobile-nav__links > a.is-featured { color: var(--amber-400); border-bottom: 0; }
.mobile-nav__sub { display: flex; flex-direction: column; padding: 0 0 10px; padding-inline-start: 14px; border-inline-start: 2px solid rgba(242, 165, 22, 0.45); border-bottom: 1px solid rgba(255, 255, 255, 0.08); margin-bottom: 0; }
.mobile-nav__sub a { display: flex; align-items: center; min-height: 44px; color: var(--on-dark-muted); font-size: 0.98rem; }
.mobile-nav__langs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; } /* 7 种语言：4 + 3 */
.mobile-nav__langs button {
  min-height: 44px; border-radius: 10px; border: 1px solid rgba(255, 255, 255, 0.2);
  font-family: var(--font-head); font-size: 0.9rem; color: #fff;
}
.mobile-nav__langs button[aria-current="true"] { background: #fff; color: var(--navy-900); border-color: #fff; }

/* ---------- Hero ---------- */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: clamp(700px, 100svh, 1000px);
  display: flex; flex-direction: column;
  padding-top: var(--header-h);
  color: #fff;
  /* 颜色取自主视觉图边缘，保证无缝衔接 */
  background: linear-gradient(90deg, #011C47 0%, #022255 50%, #013169 100%);
}
.hero__media {
  position: absolute; left: 8%; bottom: 0; width: 100%; z-index: -2;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 22%), linear-gradient(to right, transparent 0, #000 10%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to bottom, transparent 0, #000 22%), linear-gradient(to right, transparent 0, #000 10%);
  mask-composite: intersect;
}
.hero__media img { width: 100%; }
.hero__shade {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(1, 22, 56, 0.72) 0%, rgba(1, 22, 56, 0.4) 34%, rgba(1, 22, 56, 0) 56%),
    linear-gradient(0deg, rgba(2, 16, 40, 0.92) 0%, rgba(2, 16, 40, 0.35) 18%, rgba(2, 16, 40, 0) 34%);
}
.hero__inner { flex: 1; display: flex; align-items: center; padding-block: 40px; }
.hero__content { max-width: 600px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; padding-block: 7px; padding-inline: 10px 14px;
  border: 1px solid rgba(143, 193, 245, 0.3); border-radius: 999px; background: rgba(143, 193, 245, 0.08);
  font-family: var(--font-head); font-size: 0.82rem; font-weight: 500; color: #DCEAFB; letter-spacing: 0.02em;
}
.eyebrow__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--amber-500); box-shadow: 0 0 0 4px rgba(242, 165, 22, 0.22); }
.hero__title {
  margin-top: 24px; color: #fff;
  font-size: clamp(2.2rem, 1.2rem + 2.5vw, 3.4rem);
  line-height: 1.08; letter-spacing: -0.025em; font-weight: 600; text-wrap: balance;
}
.hero__title em { font-style: normal; color: var(--blue-300); }
.hero__title .nobr { display: inline-block; } /* 中文标题按词组换行 */
:lang(zh) .hero__title { line-height: 1.22; font-weight: 700; }
.hero__sub { margin-top: 22px; font-size: 1.15rem; line-height: 1.6; color: rgba(226, 237, 250, 0.86); max-width: 54ch; }
.hero__actions { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 14px; }

.hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-block: 26px 34px;
}
.stat { display: flex; flex-direction: column; gap: 4px; padding-inline: 28px; border-inline-start: 1px solid rgba(255, 255, 255, 0.12); }
.stat:first-child { padding-inline-start: 0; border-inline-start: 0; }
.stat__value { direction: ltr; unicode-bidi: isolate; align-self: flex-start; font-family: var(--font-head); font-weight: 600; font-size: clamp(2rem, 1.4rem + 1.6vw, 2.8rem); line-height: 1; color: #fff; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stat__suffix { color: var(--amber-500); margin-left: 2px; }
.stat__label { font-size: 0.95rem; color: var(--on-dark-muted); }

/* ---------- About ---------- */
.about__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(40px, 6vw, 88px); align-items: center; }
.about__lead { margin-top: 22px; font-size: 1.15rem; color: var(--ink-900); }
.about__text > p + p { margin-top: 16px; }
.about__slogan {
  margin-top: 28px; padding: 4px 0; padding-inline-start: 20px; border-inline-start: 3px solid var(--amber-500);
  font-family: var(--font-head); font-size: 1.15rem; font-weight: 500; line-height: 1.5; color: var(--navy-800);
}
.about__media { position: relative; }
.about__media::before {
  content: ""; position: absolute; inset: -22px -22px auto auto; width: 150px; height: 150px; z-index: -1;
  background-image: radial-gradient(var(--blue-300) 1.6px, transparent 1.6px); background-size: 14px 14px; opacity: 0.7;
}
.about__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.about__badge {
  position: absolute; inset-inline-start: -28px; bottom: 32px; display: flex; align-items: center; gap: 14px;
  padding: 14px 20px 14px 14px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-md);
}
.about__badge small { display: block; font-size: 0.8rem; color: var(--ink-500); }
.about__badge strong { display: block; font-family: var(--font-head); font-weight: 600; font-size: 1rem; color: var(--ink-900); }

.culture { margin-top: clamp(56px, 7vw, 96px); display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.culture__item { padding: 30px 28px; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 18px; }
.culture__label { margin-top: 20px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--blue-600); }
.culture__text { margin-top: 8px; font-family: var(--font-head); font-size: 1.12rem; font-weight: 500; line-height: 1.5; color: var(--ink-900); }

/* ---------- Business ---------- */
.biz-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px; }
.biz-feature {
  position: relative; isolation: isolate; overflow: hidden; min-height: 760px;
  display: flex; align-items: flex-end; border-radius: var(--radius-lg); background: var(--navy-900); color: #fff;
  box-shadow: var(--shadow-lg);
}
/* 图片固定在卡片上半部，文字落在下方深色区域，不遮挡车辆 */
.biz-feature__img { position: absolute; inset: 0 0 auto; width: 100%; height: 66%; object-fit: cover; object-position: 55% 50%; z-index: -2; transition: transform 800ms var(--ease); transform-origin: 50% 40%; }
.biz-feature__shade { position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(6, 33, 74, 0) 0%, rgba(6, 33, 74, 0) 36%, rgba(6, 33, 74, 0.75) 54%, var(--navy-900) 66%); }
.biz-feature__body { padding: clamp(28px, 3.5vw, 44px); }
.badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border-radius: 999px;
  background: var(--amber-500); color: var(--navy-950);
  font-family: var(--font-head); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.04em;
}
.biz-feature__title { margin-top: 18px; color: #fff; font-size: clamp(1.8rem, 1.3rem + 1.4vw, 2.5rem); letter-spacing: -0.02em; }
.biz-feature__desc { margin-top: 14px; max-width: 62ch; color: rgba(226, 237, 250, 0.86); font-size: 1.02rem; }
.biz-feature__foot {
  margin-top: 24px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, 0.16);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px;
}
.standards { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.standards__label { font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--on-dark-muted); margin-inline-end: 4px; }
.std { padding: 4px 10px; border: 1px solid rgba(242, 165, 22, 0.55); border-radius: 6px; color: var(--amber-400); font-family: var(--font-head); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.04em; }

.biz-stack { display: grid; grid-template-rows: repeat(3, 1fr); gap: 24px; }
.biz-card {
  display: grid; grid-template-columns: 40% 1fr; overflow: hidden;
  background: #fff; border: 1px solid var(--line); border-radius: 18px;
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.biz-card:hover { box-shadow: var(--shadow-md); border-color: var(--line-strong); }
.biz-card__media { position: relative; overflow: hidden; }
.biz-card__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 700ms var(--ease); }
.biz-card__body { display: flex; flex-direction: column; justify-content: center; gap: 10px; padding: 24px 26px; }
.biz-card__title { font-size: 1.2rem; }
.biz-card__body p { font-size: 0.98rem; line-height: 1.55; color: var(--ink-500); }
.biz-card { position: relative; }
.biz-card__link { margin-top: 2px; font-size: 0.92rem; color: var(--blue-600); }
.biz-card__link::after { content: ""; position: absolute; inset: 0; } /* 整张卡片可点击 */
.biz-card:hover .biz-card__title { color: var(--blue-600); }
@media (hover: hover) {
  .biz-feature:hover .biz-feature__img { transform: scale(1.04); }
  .biz-card:hover .biz-card__media img { transform: scale(1.05); }
}

/* ---------- Vehicle range ---------- */
.veh-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.veh-group {
  display: flex; flex-direction: column; padding: 28px; background: #fff;
  border: 1px solid var(--line); border-radius: 18px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.veh-group:hover { border-color: #BCD4EF; box-shadow: var(--shadow-md); }
.veh-group__head {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 14px;
  padding-bottom: 18px; margin-bottom: 8px; border-bottom: 1px solid var(--line);
}
.veh-group__head h3 { font-size: 1.08rem; line-height: 1.3; }
.veh-group__count, .count-pill {
  padding: 4px 10px; border-radius: 999px; background: var(--blue-100); color: var(--blue-600);
  font-family: var(--font-head); font-size: 0.8rem; font-weight: 600; font-variant-numeric: tabular-nums;
}
.veh-list li { position: relative; padding: 9px 0; padding-inline-start: 20px; font-size: 0.98rem; line-height: 1.45; color: var(--ink-700); border-bottom: 1px dashed var(--line); }
.veh-list li:last-child { border-bottom: 0; }
.veh-list li::before { content: ""; position: absolute; inset-inline-start: 0; top: 1.05em; width: 9px; height: 2px; border-radius: 2px; background: var(--blue-500); }
.veh-cta {
  position: relative; overflow: hidden; display: flex; flex-direction: column; align-items: flex-start; gap: 16px;
  padding: 32px; border-radius: 18px; color: var(--on-dark-muted);
  background:
    url("../img/world-dots.svg") right -120px bottom -30px / 520px auto no-repeat,
    linear-gradient(160deg, var(--navy-700), var(--navy-950));
}
.veh-cta h3 { color: #fff; font-size: 1.4rem; margin-top: 8px; }
.veh-cta .btn { margin-top: auto; }

/* ---------- Strengths ---------- */
.str-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--on-dark-line); }
.str-item { padding: 36px 28px 40px; border-inline-start: 1px solid var(--on-dark-line); transition: background-color var(--dur) var(--ease); }
.str-item:first-child { border-inline-start: 0; padding-inline-start: 0; }
.str-item:hover { background: rgba(255, 255, 255, 0.025); }
.str-item__num { display: block; margin-bottom: 20px; font-family: var(--font-head); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.14em; color: var(--amber-400); }
.str-item h3 { margin-top: 22px; font-size: 1.15rem; }
.str-item p { margin-top: 10px; font-size: 0.98rem; }

.quals {
  margin-top: 56px; display: grid; grid-template-columns: 280px 1fr; gap: 24px 40px; align-items: start;
  padding: 32px; border: 1px solid var(--on-dark-line); border-radius: 18px; background: rgba(255, 255, 255, 0.03);
}
.quals__title { display: flex; align-items: center; gap: 12px; font-size: 1.15rem; line-height: 1.35; }
.quals__title .icon { color: var(--amber-500); width: 28px; height: 28px; }
.quals__list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 32px; }
.quals__list li { display: flex; gap: 12px; font-size: 0.98rem; line-height: 1.5; color: rgba(236, 243, 252, 0.9); }
.quals__list .icon { color: var(--blue-300); margin-top: 2px; }

/* ---------- Heritage timeline ---------- */
.timeline { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.timeline::before, .timeline::after {
  content: ""; position: absolute; left: 0; right: 0; top: 67px; height: 2px; border-radius: 2px;
}
.timeline::before { background: var(--line); }
.timeline::after { background: linear-gradient(90deg, var(--blue-600), var(--amber-500)); transform: scaleX(0); transform-origin: left; transition: transform 1.6s var(--ease) 0.2s; }
.timeline.is-visible::after { transform: scaleX(1); }
.timeline__item { position: relative; }
.timeline__year { display: block; height: 52px; font-family: var(--font-head); font-weight: 600; font-size: clamp(2rem, 1.5rem + 1.2vw, 2.6rem); line-height: 1.2; letter-spacing: -0.03em; color: var(--navy-800); }
.timeline__dot {
  position: relative; z-index: 1; display: block; width: 18px; height: 18px; margin: 6px 0 24px;
  border-radius: 50%; background: #fff; border: 3px solid var(--blue-600);
}
.timeline__item--now .timeline__dot { background: var(--amber-500); border-color: var(--amber-500); box-shadow: 0 0 0 6px rgba(242, 165, 22, 0.2); }
.timeline__item--now .timeline__year { color: var(--blue-600); }
.timeline__item h3 { font-size: 1.15rem; }
.timeline__item p { margin-top: 10px; font-size: 0.98rem; color: var(--ink-500); }

/* ---------- Global network ---------- */
.network__grid { display: grid; grid-template-columns: 1.55fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.network__map { position: relative; aspect-ratio: 720 / 280; direction: ltr; } /* 地图按地理方位，不随 RTL 镜像 */
.network__map > img { width: 100%; height: 100%; opacity: 0.5; }
.network__overlay { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.map-arcs path { fill: none; stroke: var(--blue-300); stroke-opacity: 0.55; stroke-width: 1.2; stroke-dasharray: 3 5; vector-effect: non-scaling-stroke; animation: arc-flow 2.4s linear infinite; }
.map-node { fill: var(--blue-300); }
.map-node--major { fill: #fff; stroke: var(--blue-300); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.map-hq circle { fill: var(--amber-500); }
.map-pulse { fill: none; stroke: var(--blue-300); stroke-width: 1.2; vector-effect: non-scaling-stroke; transform-box: fill-box; transform-origin: center; animation: pulse 2.4s var(--ease) infinite; }
.map-pulse--hq { stroke: var(--amber-500); }
@keyframes arc-flow { to { stroke-dashoffset: -32; } }
@keyframes pulse { 0% { transform: scale(1); opacity: 0.9; } 100% { transform: scale(3.6); opacity: 0; } }

.map-label {
  position: absolute; left: var(--x); top: var(--y); transform: translate(12px, -50%);
  padding: 4px 10px; border-radius: 999px; white-space: nowrap; pointer-events: none;
  font-family: var(--font-head); font-size: 0.75rem; font-weight: 500; color: #fff;
  background: rgba(4, 25, 58, 0.82); border: 1px solid rgba(143, 193, 245, 0.3);
}
.map-label--left { transform: translate(calc(-100% - 12px), -50%); }
.map-label--above { transform: translate(-50%, calc(-100% - 12px)); }
.map-label--below { transform: translate(-50%, 12px); }
.map-label--hq { color: var(--navy-950); background: var(--amber-500); border-color: var(--amber-500); font-weight: 600; }

.regions li { display: grid; grid-template-columns: auto 1fr; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--on-dark-line); }
.regions li:first-child { padding-top: 0; }
.regions li:last-child { border-bottom: 0; }
.region__dot { width: 12px; height: 12px; margin-top: 7px; border-radius: 50%; background: var(--blue-300); box-shadow: 0 0 0 4px rgba(143, 193, 245, 0.18); }
.region__dot--hq { background: var(--amber-500); box-shadow: 0 0 0 4px rgba(242, 165, 22, 0.22); }
.regions h3 { font-size: 1.05rem; }
.regions p { margin-top: 4px; font-size: 0.96rem; }

/* ---------- Partners ---------- */
.tabs-wrap { display: flex; justify-content: center; margin-bottom: 28px; }
.tabs { display: inline-flex; flex-wrap: wrap; justify-content: center; gap: 4px; padding: 6px; background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-sm); }
.tab {
  min-height: 46px; padding: 0 22px; border-radius: 10px;
  font-family: var(--font-head); font-size: 0.95rem; font-weight: 500; color: var(--ink-700);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.tab:hover { color: var(--blue-600); }
.tab[aria-selected="true"] { background: var(--navy-800); color: #fff; }
.tab-panel { animation: fade-in 320ms var(--ease); }
.tab-panel__lead { text-align: center; max-width: 64ch; margin: 0 auto; color: var(--ink-500); }
@keyframes fade-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.brand-group { margin-top: 44px; }
.brand-group__head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; margin-bottom: 20px; }
.brand-group__head h3 { font-size: 1.2rem; }
.brand-group__head p { flex-basis: 100%; font-size: 0.98rem; color: var(--ink-500); }
.brand-wall { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.brand-card {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  min-height: 112px; padding: 20px; text-align: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
/* 规范：默认低饱和，悬停“恢复全彩” */
.brand-card__name { font-family: var(--font-head); font-weight: 600; font-size: 1.08rem; line-height: 1.25; letter-spacing: -0.01em; color: #7A8699; transition: color var(--dur) var(--ease); }
.brand-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: #BCD4EF; }
.brand-card:hover .brand-card__name { color: var(--navy-800); }
.brand-cn { display: none; font-size: 0.82rem; color: var(--ink-500); }
:lang(zh) .brand-cn { display: block; }

.parts-grid { margin-top: 44px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.parts-card { display: flex; flex-direction: column; gap: 14px; padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
.parts-card__head { display: flex; align-items: center; gap: 14px; }
.parts-card__head h3 { font-size: 1.08rem; }
.parts-card > p { font-size: 0.96rem; line-height: 1.55; color: var(--ink-500); }
.parts-card__items { padding: 12px 14px; border-radius: 10px; background: var(--bg-soft); font-size: 0.93rem; line-height: 1.55; color: var(--ink-700); }
.parts-card__items strong { display: block; margin-bottom: 4px; font-family: var(--font-head); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--blue-600); }
.brand-chips { margin-top: auto; display: flex; flex-wrap: wrap; gap: 8px; }
.brand-chips li {
  display: inline-flex; align-items: baseline; gap: 5px; padding: 5px 12px; border-radius: 999px;
  border: 1px solid var(--line); font-family: var(--font-head); font-size: 0.84rem; font-weight: 500; color: var(--ink-700);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.brand-chips li:hover { border-color: #BCD4EF; color: var(--navy-800); }
:lang(zh) .brand-chips .brand-cn { display: inline; font-size: 0.78rem; }
.parts-card--cta {
  justify-content: space-between; align-items: flex-start; color: #fff; border: 0;
  background: url("../img/world-dots.svg") right -140px bottom -20px / 480px auto no-repeat, linear-gradient(160deg, var(--navy-700), var(--navy-950));
}
.parts-card--cta .parts-card__roles { font-family: var(--font-head); font-size: 1.25rem; font-weight: 600; line-height: 1.5; color: #fff; }
.partners__tm { margin-top: 40px; text-align: center; font-size: 0.85rem; color: var(--ink-500); }

/* ---------- Contact ---------- */
.contact__grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(40px, 6vw, 80px); align-items: start; }
.contact-list { margin-top: 32px; }
.contact-list li { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-list li:first-child { border-top: 1px solid var(--line); }
.contact-list__label { display: block; font-family: var(--font-head); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-500); }
.contact-list__value { display: block; margin-top: 2px; font-family: var(--font-head); font-size: 1.05rem; font-weight: 500; color: var(--ink-900); word-break: break-word; }
a.contact-list__value { color: var(--blue-600); transition: color var(--dur) var(--ease); }
a.contact-list__value:hover { color: var(--navy-800); text-decoration: underline; text-underline-offset: 3px; }
.contact-list__sub { display: block; margin-top: 2px; color: var(--ink-700); font-variant-numeric: tabular-nums; }

.quote-form { padding: clamp(24px, 4vw, 40px); background: #fff; border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow-lg); }
.quote-form__title { font-size: 1.5rem; }
.quote-form__note { margin: 6px 0 24px; font-size: 0.9rem; color: var(--ink-500); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.field label { font-family: var(--font-head); font-size: 0.9rem; font-weight: 500; color: var(--ink-900); }
.req { color: var(--danger); }
.field input, .field select, .field textarea {
  width: 100%; min-height: 50px; padding: 12px 14px; font-size: 1rem; color: var(--ink-900);
  background: #fff; border: 1px solid var(--line-strong); border-radius: 10px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.field textarea { resize: vertical; min-height: 130px; line-height: 1.55; }
.field select {
  appearance: none; -webkit-appearance: none; padding-right: 42px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2356657A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; background-size: 18px;
}
.field input::placeholder, .field textarea::placeholder { color: #8A96A8; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: #94A3B8; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 4px rgba(42, 111, 189, 0.16); }
.field [aria-invalid="true"] { border-color: var(--danger); }
.field [aria-invalid="true"]:focus { box-shadow: 0 0 0 4px rgba(198, 40, 40, 0.14); }
.field__error { display: flex; align-items: center; gap: 6px; font-size: 0.86rem; color: var(--danger); }
.field__error::before {
  content: ""; width: 16px; height: 16px; flex-shrink: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23C62828' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M12 8v4M12 16h.01'/%3E%3C/svg%3E") center / contain no-repeat;
}
.quote-form .btn--block { margin-top: 6px; }
.quote-form__privacy { margin-top: 14px; font-size: 0.86rem; color: var(--ink-500); text-align: center; }
.form-status {
  margin-top: 18px; display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px;
  border-radius: 12px; background: var(--success-bg); border: 1px solid var(--success-line); color: var(--success-ink);
  font-size: 0.95rem; line-height: 1.55; animation: fade-in 280ms var(--ease);
}
.form-status .icon { color: #15803D; margin-top: 1px; }
.form-status--error { background: #FEF2F2; border-color: #FECACA; color: #7F1D1D; }
.form-status--error .icon { color: var(--danger); }
.form-status__link { display: inline-block; margin-top: 6px; font-family: var(--font-head); font-weight: 600; color: var(--blue-600); text-decoration: underline; text-underline-offset: 3px; }
.btn[disabled] { opacity: 0.6; cursor: progress; transform: none; box-shadow: none; }
/* 蜜罐字段：对真人隐藏，但保留在 DOM 里让机器人填写 */
.hp-field { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* ---------- Footer ---------- */
.site-footer { padding-top: 72px; background: var(--navy-950); color: var(--on-dark-muted); font-size: 0.97rem; }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; }
.footer__brand .brand__en { font-size: 1rem; white-space: normal; }
.footer__tagline { margin-top: 18px; max-width: 34ch; }
.footer__heading { margin-bottom: 16px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: #fff; }
.footer__col li + li { margin-top: 8px; }
.footer__col a { display: inline-block; padding-block: 2px; transition: color var(--dur) var(--ease); word-break: break-word; }
.footer__col a:hover { color: #fff; }
.footer__bottom {
  margin-top: 56px; padding-block: 22px; border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; font-size: 0.88rem;
}
.footer__langs { display: flex; flex-wrap: wrap; gap: 4px; }
.footer__langs button { min-height: 36px; padding: 0 10px; border-radius: 8px; color: var(--on-dark-muted); transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease); }
.footer__langs button:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.footer__langs button[aria-current="true"] { color: #fff; font-weight: 600; }
.to-top { display: inline-flex; align-items: center; gap: 8px; min-height: 36px; transition: color var(--dur) var(--ease); }
.to-top:hover { color: #fff; }

/* ---------- Reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); transition-delay: calc(var(--d, 0) * 90ms); }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* =========================================================
   Detail pages（商用车 / 工程机械 / 专用改装车 / 零部件）
   ========================================================= */
.page-hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: clamp(460px, 62vh, 620px); display: flex; align-items: flex-end;
  padding-top: var(--header-h); background: var(--navy-950); color: #fff;
}
.page-hero__media { position: absolute; inset: 0; z-index: -2; }
.page-hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: 60% 50%; }
.page-hero__shade {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(2, 16, 40, 0.94) 0%, rgba(2, 16, 40, 0.72) 42%, rgba(2, 16, 40, 0.2) 75%),
    linear-gradient(0deg, rgba(2, 16, 40, 0.85) 0%, rgba(2, 16, 40, 0) 45%);
}
[dir="rtl"] .page-hero__shade {
  background:
    linear-gradient(270deg, rgba(2, 16, 40, 0.94) 0%, rgba(2, 16, 40, 0.72) 42%, rgba(2, 16, 40, 0.2) 75%),
    linear-gradient(0deg, rgba(2, 16, 40, 0.85) 0%, rgba(2, 16, 40, 0) 45%);
}
.page-hero__inner { padding-block: 48px 132px; }
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; font-size: 0.9rem; color: var(--on-dark-muted); }
.breadcrumb li + li::before { content: "/"; margin-inline-end: 10px; color: rgba(255, 255, 255, 0.35); }
.breadcrumb a { transition: color var(--dur) var(--ease); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb [aria-current="page"] { color: #fff; }
.page-hero__title { margin-top: 18px; max-width: 18ch; color: #fff; font-size: clamp(2.2rem, 1.3rem + 2.8vw, 3.6rem); line-height: 1.1; letter-spacing: -0.02em; text-wrap: balance; }
.page-hero__lead { margin-top: 18px; max-width: 60ch; font-size: 1.12rem; color: rgba(226, 237, 250, 0.88); }
.page-hero .hero__actions { margin-top: 30px; }

.highlights { position: relative; z-index: 2; margin-top: -88px; }
.highlight-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
}
.highlight { padding: 30px 28px; border-inline-start: 1px solid var(--line); }
.highlight:first-child { border-inline-start: 0; }
.highlight h2 { margin-top: 18px; font-size: 1.08rem; }
.highlight p { margin-top: 8px; font-size: 0.96rem; line-height: 1.55; color: var(--ink-500); }

.feature-rows { display: grid; gap: clamp(56px, 7vw, 96px); }
.feature-row { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: center; scroll-margin-top: calc(var(--header-h) + 24px); }
.feature-row:nth-child(even) .feature-row__media { order: 2; }
.zoomable {
  position: relative; display: block; width: 100%; overflow: hidden; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); cursor: zoom-in; background: var(--navy-900);
}
.zoomable img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; transition: transform 700ms var(--ease); }
.zoomable::after {
  content: ""; position: absolute; inset-block-start: 14px; inset-inline-end: 14px; width: 40px; height: 40px; border-radius: 50%;
  background: rgba(4, 25, 58, 0.72) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-3.5-3.5M11 8v6M8 11h6'/%3E%3C/svg%3E") center / 20px no-repeat;
  opacity: 0; transition: opacity var(--dur) var(--ease);
}
.zoomable:hover::after, .zoomable:focus-visible::after { opacity: 1; }
@media (hover: hover) { .zoomable:hover img { transform: scale(1.04); } }
.feature-row__head { display: flex; align-items: center; gap: 14px; }
.feature-row__head h3 { font-size: clamp(1.35rem, 1.1rem + 0.8vw, 1.75rem); line-height: 1.25; }
.feature-row__body > p { margin-top: 16px; color: var(--ink-500); }
.check-list { margin-top: 22px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; }
.check-list li { position: relative; padding-inline-start: 26px; font-size: 0.97rem; line-height: 1.45; color: var(--ink-700); }
.check-list li::before {
  content: ""; position: absolute; inset-inline-start: 0; top: 2px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--blue-100) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231E5B9C' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 11px no-repeat;
}
.feature-row__body .parts-card__items { margin-top: 20px; }
.feature-row__body .brand-chips { margin-top: 18px; }
.feature-row__body .link-arrow { margin-top: 24px; color: var(--blue-600); }

.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.product-card { display: flex; flex-direction: column; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 20px; transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.product-card:hover { box-shadow: var(--shadow-md); border-color: #BCD4EF; }
.product-card .zoomable { border-radius: 0; box-shadow: none; }
.product-card__body { display: flex; flex-direction: column; gap: 12px; padding: 26px 28px 28px; flex: 1; }
.product-card__body h3 { font-size: 1.3rem; }
.product-card__body > p { color: var(--ink-500); font-size: 0.98rem; line-height: 1.55; }
.spec { padding: 12px 14px; border-radius: 10px; background: var(--bg-soft); font-size: 0.94rem; color: var(--ink-900); font-variant-numeric: tabular-nums; }
.spec strong { display: block; margin-bottom: 2px; font-family: var(--font-head); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--blue-600); }
.product-card .link-arrow { margin-top: auto; padding-top: 6px; color: var(--blue-600); }

.brand-strip { margin-top: clamp(48px, 6vw, 72px); padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--bg-soft); }
.brand-strip .brand-group__head { margin-bottom: 16px; }

.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.gallery-card { position: relative; display: block; width: 100%; overflow: hidden; border-radius: 14px; cursor: zoom-in; background: var(--navy-900); text-align: start; }
.gallery-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 700ms var(--ease); }
.gallery-card span {
  position: absolute; inset: auto 0 0; padding: 36px 16px 14px;
  background: linear-gradient(0deg, rgba(2, 16, 40, 0.92), rgba(2, 16, 40, 0));
  font-family: var(--font-head); font-size: 0.95rem; font-weight: 500; line-height: 1.35; color: #fff;
}
@media (hover: hover) { .gallery-card:hover img { transform: scale(1.05); } }

.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
.process-step { position: relative; padding: 28px; background: #fff; border: 1px solid var(--line); border-radius: 18px; }
.process-step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 12px;
  background: var(--navy-800); color: #fff; font-family: var(--font-head); font-weight: 600; font-size: 0.95rem;
}
.process-step:last-child::before { background: var(--amber-500); color: var(--navy-950); }
.process-step h3 { margin-top: 18px; font-size: 1.1rem; }
.process-step p { margin-top: 8px; font-size: 0.96rem; line-height: 1.55; color: var(--ink-500); }

.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { position: relative; display: flex; flex-direction: column; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 18px; transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease); }
.related-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.related-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.related-card__body { display: flex; flex-direction: column; gap: 10px; padding: 22px 24px 24px; flex: 1; }
.related-card__body h3 { font-size: 1.15rem; }
.related-card__body p { font-size: 0.95rem; line-height: 1.55; color: var(--ink-500); }
.related-card .link-arrow { margin-top: auto; color: var(--blue-600); }
.related-card .link-arrow::after { content: ""; position: absolute; inset: 0; }

.cta-band {
  display: grid; grid-template-columns: 1fr auto; gap: 24px 48px; align-items: center;
  padding: clamp(32px, 5vw, 56px); border-radius: var(--radius-lg); color: var(--on-dark-muted);
  background: url("../img/world-dots.svg") right -160px center / 640px auto no-repeat, linear-gradient(150deg, var(--navy-700), var(--navy-950));
}
.cta-band h2 { color: #fff; font-size: clamp(1.6rem, 1.2rem + 1.2vw, 2.2rem); }
.cta-band p { margin-top: 10px; max-width: 58ch; }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: 12px; }

.lightbox { width: min(92vw, 1200px); max-height: 92vh; padding: 0; border: 0; border-radius: var(--radius); background: var(--navy-950); color: #fff; overflow: hidden; }
.lightbox::backdrop { background: rgba(2, 10, 24, 0.82); }
.lightbox img { width: 100%; max-height: calc(92vh - 64px); object-fit: contain; background: #000; }
.lightbox figcaption { padding: 16px 64px 18px 20px; font-family: var(--font-head); font-weight: 500; }
[dir="rtl"] .lightbox figcaption { padding: 16px 20px 18px 64px; }
.lightbox__close {
  position: absolute; inset-block-start: 12px; inset-inline-end: 12px; display: grid; place-items: center; width: 44px; height: 44px;
  border-radius: 50%; background: rgba(4, 25, 58, 0.75); color: #fff; border: 1px solid rgba(255, 255, 255, 0.25);
}
.lightbox__close:hover { background: rgba(4, 25, 58, 0.95); }

/* 导航放不下时（长语种）由 JS 加 .nav-compact 收起 */
.nav-compact .main-nav, .nav-compact .header__cta { display: none; }
.nav-compact .menu-toggle { display: grid; }
.nav-compact .header__actions { margin-inline-start: auto; }

/* =========================================================
   RTL（阿拉伯语）
   ========================================================= */
[dir="rtl"] .nav-link::after { transform-origin: right; }
[dir="rtl"] .icon--dir { transform: scaleX(-1); }
[dir="rtl"] .btn:hover .icon--dir, [dir="rtl"] .link-arrow:hover .icon--dir { transform: scaleX(-1) translateX(3px); }
[dir="rtl"] .hero { background: linear-gradient(270deg, #011C47 0%, #022255 50%, #013169 100%); }
[dir="rtl"] .hero__media {
  left: auto; right: 8%;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 22%), linear-gradient(to left, transparent 0, #000 10%);
  mask-image: linear-gradient(to bottom, transparent 0, #000 22%), linear-gradient(to left, transparent 0, #000 10%);
}
[dir="rtl"] .hero__media img { transform: scaleX(-1); } /* 主视觉无文字与标志，可安全镜像，让标题落在留白区 */
[dir="rtl"] .hero__shade {
  background:
    linear-gradient(270deg, rgba(1, 22, 56, 0.72) 0%, rgba(1, 22, 56, 0.4) 34%, rgba(1, 22, 56, 0) 56%),
    linear-gradient(0deg, rgba(2, 16, 40, 0.92) 0%, rgba(2, 16, 40, 0.35) 18%, rgba(2, 16, 40, 0) 34%);
}
[dir="rtl"] .timeline::after { background: linear-gradient(270deg, var(--blue-600), var(--amber-500)); transform-origin: right; }
[dir="rtl"] .field select { padding-right: 14px; padding-left: 42px; background-position: left 14px center; }
[dir="rtl"] .field input[type="email"] { direction: ltr; text-align: right; }
[dir="rtl"] .mobile-nav__panel { right: auto; left: 0; transform: translateX(-100%); }
[dir="rtl"] .mobile-nav.is-open .mobile-nav__panel { transform: none; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1240px) {
  .main-nav, .header__cta { display: none; }
  .menu-toggle { display: grid; }
  .header__actions { margin-inline-start: auto; }
}

@media (max-width: 1099px) {
  /* Hero：上文下图堆叠 */
  .hero { min-height: 0; }
  .hero__inner { order: 1; flex: none; padding-block: 48px 8px; }
  .hero__media {
    position: relative; left: auto; order: 2; width: 100%; aspect-ratio: 16 / 10;
    -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 22%, #000 78%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0, #000 22%, #000 78%, transparent 100%);
  }
  .hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: 72% 50%; }
  .hero__shade { display: none; }
  [dir="rtl"] .hero__media { right: auto; }
  .hero > .container:last-child { order: 3; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
  .stat:nth-child(3) { padding-inline-start: 0; border-inline-start: 0; }

  .section-head--split { grid-template-columns: 1fr; }
  .about__grid { grid-template-columns: 1fr; }
  .about__media { max-width: 720px; }
  .about__badge { inset-inline-start: 16px; bottom: 16px; }
  .biz-grid { grid-template-columns: 1fr; }
  .biz-feature { min-height: 700px; }
  .biz-stack { grid-template-rows: none; }
  .veh-grid { grid-template-columns: repeat(2, 1fr); }
  .str-grid { grid-template-columns: repeat(2, 1fr); }
  .str-item:nth-child(3) { border-inline-start: 0; padding-inline-start: 0; }
  .str-item:nth-child(n+3) { border-top: 1px solid var(--on-dark-line); }
  .quals { grid-template-columns: 1fr; }
  .network__grid { grid-template-columns: 1fr; }
  .brand-wall { grid-template-columns: repeat(4, 1fr); }
  .brand-card { min-height: 100px; }
  .parts-grid { grid-template-columns: repeat(2, 1fr); }
  .contact__grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767px) {
  :root { --header-h: 64px; }
  body { font-size: 1rem; }
  .brand__mark { width: 36px; height: 36px; }
  .brand__en { font-size: 0.95rem; }
  .brand__zh { font-size: 0.72rem; letter-spacing: 0.08em; }
  .hero__sub { font-size: 1.05rem; }
  .hero__actions .btn { flex: 1 1 100%; }
  .stat { padding-inline: 18px; }
  .culture { grid-template-columns: 1fr; }
  .biz-feature { min-height: 0; padding-top: 58vw; }
  .biz-feature__img { height: 72vw; }
  .biz-feature__shade { background: linear-gradient(180deg, rgba(6, 33, 74, 0) 0, rgba(6, 33, 74, 0) calc(72vw - 120px), var(--navy-900) 72vw); }
  .biz-card { grid-template-columns: 1fr; }
  .biz-card__media { aspect-ratio: 16 / 9; }
  .veh-grid { grid-template-columns: 1fr; }
  .str-grid { grid-template-columns: 1fr; }
  .str-item, .str-item:first-child, .str-item:nth-child(3) { padding: 28px 0; border-inline-start: 0; }
  .str-item:nth-child(n+2) { border-top: 1px solid var(--on-dark-line); }
  .quals { padding: 24px; }
  .quals__list { grid-template-columns: 1fr; }
  /* 时间轴改竖向 */
  .timeline { grid-template-columns: 1fr; gap: 28px; padding-inline-start: 36px; }
  .timeline::before, .timeline::after { inset-inline: 8px auto; top: 8px; bottom: 8px; width: 2px; height: auto; }
  .timeline::after { background: linear-gradient(180deg, var(--blue-600), var(--amber-500)); transform: scaleY(0); transform-origin: top; }
  .timeline.is-visible::after { transform: scaleY(1); }
  [dir="rtl"] .timeline::after { background: linear-gradient(180deg, var(--blue-600), var(--amber-500)); transform-origin: top; }
  .timeline__year { height: auto; font-size: 1.7rem; }
  .timeline__dot { position: absolute; inset-inline-start: -36px; top: 8px; margin: 0; }
  .timeline__item h3 { margin-top: 6px; }
  .map-label { display: none; }
  .brand-wall { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .brand-card { min-height: 84px; padding: 14px; }
  .brand-card__name { font-size: 0.98rem; }
  .parts-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 479px) {
  /* 小屏：语言切换收进抽屉，保证品牌名完整 */
  .header__actions .lang { display: none; }
  .hero__title { font-size: 2.1rem; }
  .stat { padding-inline: 14px; }
  .stat__label { font-size: 0.88rem; }
  .tab { padding: 0 14px; font-size: 0.88rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; transition-delay: 0ms !important; }
  .js .reveal { opacity: 1; transform: none; }
  .map-pulse { display: none; }
}

/* ---------- Detail pages · responsive ---------- */
@media (max-width: 1099px) {
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .highlight:nth-child(3) { border-inline-start: 0; }
  .highlight:nth-child(n+3) { border-top: 1px solid var(--line); }
  .feature-row { grid-template-columns: 1fr; }
  .feature-row:nth-child(even) .feature-row__media { order: 0; }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-band { grid-template-columns: 1fr; }
}
@media (max-width: 767px) {
  .page-hero__inner { padding-block: 32px 112px; }
  .highlights { margin-top: -72px; }
  .highlight-grid { grid-template-columns: 1fr; }
  .highlight, .highlight:nth-child(3) { border-inline-start: 0; }
  .highlight:nth-child(n+2) { border-top: 1px solid var(--line); }
  .check-list { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .gallery-card span { font-size: 0.85rem; padding: 28px 10px 10px; }
  .process-grid, .related-grid { grid-template-columns: 1fr; }
  .brand-strip { padding: 20px; }
}