/* ============================================================
 * assets/css/style.css — 全站样式（设计系统 · 亮/暗主题 · 响应式）
 * ★ 视觉风格：工业商务 · 高级质感 · 克制动效
 * ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  /* 品牌色（源自 logo-br.svg） */
  --c-steel: #313e48;
  --c-ink: #17212b;
  --c-accent: #1e6fb5;
  --c-accent-2: #cd8e09;
  --c-accent-soft: rgba(30, 111, 181, 0.1);

  /* 亮色主题（v2.1 层次增强：底色加深，纯白卡片自然浮起） */
  --bg: #edf1f5;
  --bg-alt: #e3e9ef;
  --surface: #ffffff;
  --surface-2: #f3f6f9;
  --line: #d9e1e8;
  --line-strong: #c2cdd6;
  --text: #2a3641;
  --text-2: #5a6b78;
  --text-3: #8b9aa6;
  --hero-text: #ffffff;
  --shadow-sm: 0 1px 2px rgba(20, 35, 48, 0.07), 0 4px 14px rgba(20, 35, 48, 0.07);
  --shadow-md: 0 2px 4px rgba(20, 35, 48, 0.08), 0 14px 36px rgba(20, 35, 48, 0.13);
  --shadow-lg: 0 4px 8px rgba(20, 35, 48, 0.1), 0 26px 64px rgba(20, 35, 48, 0.2);
  --ring: rgba(30, 111, 181, 0.35);
  --grid-line: rgba(30, 60, 90, 0.05);
}

[data-theme="dark"] {
  /* v2.1 层次增强：底色压深、卡片抬升、顶缘金属高光、冷蓝环境光 */
  --bg: #0a0f14;
  --bg-alt: #0d141b;
  --surface: #1a242e;
  --surface-2: #222e3a;
  --line: #2e3d49;
  --line-strong: #405260;
  --text: #e6ecef;
  --text-2: #a7b4bd;
  --text-3: #73828c;
  --hero-text: #ffffff;
  --c-accent-soft: rgba(46, 134, 214, 0.16);
  --shadow-sm: inset 0 1px 0 rgba(160, 190, 220, 0.07), 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 16px rgba(3, 10, 16, 0.5);
  --shadow-md: inset 0 1px 0 rgba(160, 190, 220, 0.07), 0 2px 4px rgba(0, 0, 0, 0.4), 0 14px 38px rgba(3, 10, 16, 0.6);
  --shadow-lg: inset 0 1px 0 rgba(160, 190, 220, 0.08), 0 4px 10px rgba(0, 0, 0, 0.45), 0 28px 68px rgba(3, 10, 16, 0.7);
  --ring: rgba(30, 111, 181, 0.55);
  --grid-line: rgba(120, 160, 200, 0.05);
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "Noto Sans", "Segoe UI", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Noto Sans JP", "Noto Sans KR", "Noto Sans Arabic", "Noto Sans Hebrew", "Noto Sans Thai", "Noto Sans Devanagari", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body.no-scroll { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: var(--c-accent); text-decoration: none; transition: color .25s; }
a:hover { color: var(--c-accent); }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 15px; color: var(--text); }
::selection { background: var(--c-accent); color: #fff; }

.container { width: min(1180px, 92%); margin: 0 auto; }

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
}
h1 { font-size: clamp(2rem, 4.6vw, 3.3rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.35rem); }
h3 { font-size: 1.18rem; }

/* ---------- 装饰背景网格 ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
}
#site-header { position: relative; z-index: 100; }
#site-footer, main { position: relative; z-index: 1; }

/* ---------- 小元素 ---------- */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 14px;
}
.k-line { width: 34px; height: 2px; background: linear-gradient(90deg, var(--c-accent), transparent); }

.br-icon { width: 1.1em; height: 1.1em; flex: none; }

.sec-head { margin-bottom: 42px; }
.sec-head.split-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.sec-title { margin-bottom: 10px; }
.sec-text { color: var(--text-2); max-width: 640px; }

.section-pad { padding: 84px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-line { border-bottom: 1px solid var(--line); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 6px;
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .02em;
  border: 1px solid transparent;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn .br-icon { width: 1em; height: 1em; transition: transform .25s; }
.btn:hover .br-icon { transform: translateX(4px); }
.btn-primary { background: var(--c-accent); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: #175d99; color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; border-color: rgba(255, 255, 255, .7); color: #fff; }
.btn-outline:hover { background: #fff; color: var(--c-steel); transform: translateY(-2px); }
.btn-ghost { background: transparent; border-color: var(--line-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--c-accent); color: var(--c-accent); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--c-steel); box-shadow: var(--shadow-md); }
.btn-light:hover { background: var(--c-accent); color: #fff; transform: translateY(-2px); }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-block { width: 100%; justify-content: center; }

.link-more { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; margin-top: 10px; }
.link-more .br-icon { width: 1em; height: 1em; transition: transform .25s; }
.link-more:hover .br-icon { transform: translateX(4px); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 90;
  background: rgba(237, 241, 245, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background .3s, box-shadow .3s, border-color .3s;
}
[data-theme="dark"] .site-header { background: rgba(10, 15, 20, 0.85); }
.site-header.is-scrolled {
  background: var(--surface);
  border-color: var(--line);
  box-shadow: var(--shadow-sm);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand-logo { height: 44px; width: auto; }
.brand-name { font-weight: 800; font-size: 1.02rem; color: var(--text); letter-spacing: .01em; }

.site-nav { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.nav-link {
  position: relative;
  padding: 8px 14px;
  color: var(--text-2);
  font-weight: 600;
  font-size: .93rem;
  border-radius: 6px;
}
.nav-link:hover { color: var(--text); background: var(--c-accent-soft); }
.nav-link.is-active { color: var(--c-accent); }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--c-accent);
  border-radius: 2px;
}

.header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.icon-btn {
  display: grid; place-items: center;
  width: 40px; height: 40px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  transition: all .25s;
}
.icon-btn:hover { border-color: var(--c-accent); color: var(--c-accent); transform: translateY(-1px); }
.icon-btn .br-icon { width: 19px; height: 19px; }

.nav-utils { display: flex; align-items: center; gap: 8px; }
.nav-utils-inline { display: none; }

/* ---------- 语言切换器（22 语言下拉） ---------- */
.lang-switcher { position: relative; display: inline-block; }
.lang-switch, .theme-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  height: 36px; padding: 0 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  font-weight: 700; font-size: .85rem;
  transition: all .25s;
}
.lang-switch:hover, .theme-toggle:hover { border-color: var(--c-accent); color: var(--c-accent); }
.lang-ico .br-icon, .theme-toggle .br-icon { width: 16px; height: 16px; }
.lang-chev { width: 14px; height: 14px; opacity: .6; transition: transform .25s; }
.lang-switch[aria-expanded="true"] .lang-chev { transform: rotate(180deg); }

.lang-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  inset-inline-end: 0;
  width: 200px;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  overflow: hidden;
  animation: riseIn .2s ease;
}
.lang-dropdown[hidden] { display: none; }
.lang-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  grid-auto-flow: row;
  gap: 2px 6px;
  padding: 8px;
  max-height: calc(100vh - 150px);
  overflow-y: auto;
  scrollbar-width: thin;
}
.lang-list::-webkit-scrollbar { width: 6px; }
.lang-list::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 3px; }
.lang-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background .15s;
}
.lang-option:hover, .lang-option:focus { background: var(--c-accent-soft); }
.lang-option.is-current { background: var(--c-accent-soft); color: var(--c-accent); font-weight: 700; }
.lang-name { font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lang-code { font-size: .75rem; color: var(--text-3); font-weight: 600; letter-spacing: .05em; }
.lang-option.is-current .lang-code { color: var(--c-accent); }
/* 语言下拉：移动端底部面板（双列） */
@media (max-width: 640px) {
  .lang-dropdown {
    position: fixed;
    top: auto;
    inset-inline-end: auto;
    left: 12px;
    right: 12px;
    bottom: 12px;
    width: auto;
    max-height: 72vh;
  }
  .lang-list { grid-template-rows: none; grid-auto-rows: minmax(36px, auto); }
  .lang-name { font-size: .82rem; }
  .lang-code { display: none; }
}

.th-sun { display: none; }
[data-theme="dark"] .th-sun { display: block; }
[data-theme="dark"] .th-moon { display: none; }
.menu-btn { display: none; }

/* ---------- 搜索浮层 ---------- */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(10, 16, 22, 0.55);
  backdrop-filter: blur(6px);
  padding-top: 90px;
  animation: fadeIn .2s ease;
}
.search-panel {
  max-width: 760px;
  margin: 0 auto;
  background: var(--surface);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: riseIn .28s ease;
}
.search-field { display: flex; align-items: center; gap: 12px; padding: 18px 22px; border-bottom: 1px solid var(--line); }
.search-field .br-icon { width: 22px; height: 22px; color: var(--text-3); }
#search-input {
  flex: 1; border: none; outline: none;
  background: transparent; color: var(--text);
  font-size: 1.15rem;
}
.search-clear { background: none; border: none; color: var(--text-3); display: grid; place-items: center; }
.search-clear .br-icon { width: 20px; height: 20px; }
.search-hints { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; padding: 14px 22px; border-bottom: 1px solid var(--line); }
.hint-label { font-size: .82rem; color: var(--text-3); font-weight: 600; }
.hint-chip {
  border: 1px solid var(--line); background: var(--surface-2);
  color: var(--text-2); border-radius: 999px; padding: 5px 13px;
  font-size: .82rem; transition: all .2s;
}
.hint-chip:hover { border-color: var(--c-accent); color: var(--c-accent); background: var(--c-accent-soft); }
.search-results { max-height: 46vh; overflow-y: auto; padding: 8px; }
.search-item {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 14px; border-radius: 10px;
  color: var(--text); transition: background .2s;
}
.search-item:hover { background: var(--c-accent-soft); color: var(--text); }
.si-ico { width: 40px; height: 40px; border-radius: 10px; background: var(--c-accent-soft); color: var(--c-accent); display: grid; place-items: center; flex: none; }
.si-ico .br-icon { width: 20px; height: 20px; }
.si-title { font-weight: 700; }
.si-tag { margin-left: auto; font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--text-3); flex: none; }
.search-empty { padding: 26px; text-align: center; color: var(--text-3); }

/* ---------- Hero / 轮播 ---------- */
.hero {
  position: relative;
  height: min(92vh, 820px);
  min-height: 560px;
  overflow: hidden;
  background: var(--c-steel);
}
.hero-bg-wrap { position: absolute; inset: 0; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.1s ease; }
.hero-slide.is-active { opacity: 1; z-index: 1; }
.hero-bg {
  position: absolute; inset: -6%;
  background-size: cover;
  background-position: center;
  transform: scale(1.06);
  will-change: transform;
}
.hero-shade {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(13, 22, 30, .82) 0%, rgba(13, 22, 30, .55) 42%, rgba(13, 22, 30, .18) 100%),
    linear-gradient(0deg, rgba(13, 22, 30, .5) 0%, transparent 40%);
}
.hero-content {
  position: relative; z-index: 2;
  height: 100%;
  display: flex; flex-direction: column;
  justify-content: center;
  color: var(--hero-text);
}
.hero-copy-wrap { max-width: 680px; }
.hero-copy { display: none; }
.hero-copy.is-active { display: block; animation: heroIn .7s ease both; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .8rem; font-weight: 700; letter-spacing: .22em;
  text-transform: uppercase; color: #bcd4ea; margin-bottom: 18px;
}
.hero-kicker::before { content: ""; width: 36px; height: 2px; background: var(--c-accent-2); }
.hero-title { color: #fff; margin-bottom: 20px; text-shadow: 0 2px 24px rgba(0,0,0,.35); }
.hero-text { color: rgba(255, 255, 255, .88); font-size: 1.12rem; max-width: 560px; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-dots { position: absolute; z-index: 3; bottom: 34px; left: 50%; transform: translateX(-50%); display: flex; gap: 9px; }
.dot {
  width: 26px; height: 4px; border-radius: 4px;
  border: none; background: rgba(255, 255, 255, .35);
  transition: all .3s;
}
.dot.is-active { background: var(--c-accent-2); width: 40px; }
.hero-arrow {
  position: absolute; z-index: 3; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .35); background: rgba(255, 255, 255, .08);
  color: #fff; display: grid; place-items: center;
  transition: all .3s;
}
.hero-arrow:hover { background: var(--c-accent); border-color: var(--c-accent); }
.hero-prev { left: 28px; }
.hero-next { right: 28px; }
.hero-arrow .br-icon { width: 22px; height: 22px; }
.hero-scroll {
  position: absolute; z-index: 3; bottom: 22px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,.75); animation: bob 2s ease infinite;
}
.hero-scroll .br-icon { width: 26px; height: 26px; }

@keyframes heroIn {
  from { opacity: 0; transform: translateY(26px); }
  to { opacity: 1; transform: none; }
}
@keyframes bob { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }
@keyframes fadeIn { from { opacity: 0; } }
@keyframes riseIn { from { opacity: 0; transform: translateY(16px); } }

/* ---------- 滚动显现 ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- Split 简介 ---------- */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.split-body p { color: var(--text-2); margin-bottom: 16px; }
.split-media { position: relative; border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-lg); }
.split-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; transition: transform .8s ease; }
.split-media:hover img { transform: scale(1.05); }
.media-badge {
  position: absolute; left: 22px; bottom: 22px;
  background: rgba(255, 255, 255, .94);
  color: var(--c-steel);
  padding: 16px 22px; border-radius: 12px;
  box-shadow: var(--shadow-md);
  display: flex; flex-direction: column; line-height: 1.3;
}
[data-theme="dark"] .media-badge { background: rgba(26, 36, 46, .94); color: var(--text); }
.mb-num { font-size: 1.7rem; font-weight: 800; color: var(--c-accent); }
.mb-label { font-size: .8rem; color: var(--text-2); font-weight: 600; }

/* ---------- 统计条 ---------- */
.stats-strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 40px 24px;
  box-shadow: var(--shadow-sm);
}
.stat { text-align: center; position: relative; }
.stat:not(:last-child)::after {
  content: ""; position: absolute; right: -10px; top: 20%; bottom: 20%;
  width: 1px; background: var(--line);
}
.stat-num { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; color: var(--c-accent); line-height: 1.1; }
.stat-label { margin-top: 8px; color: var(--text-2); font-weight: 600; font-size: .92rem; }

/* ---------- 三大亮点 ---------- */
.pillar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pillar {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 34px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.pillar:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(30, 111, 181, .35); }
.pillar-ico {
  width: 58px; height: 58px; border-radius: 14px;
  background: var(--c-accent-soft); color: var(--c-accent);
  display: grid; place-items: center; margin-bottom: 20px;
  transition: all .3s;
}
.pillar:hover .pillar-ico { background: var(--c-accent); color: #fff; transform: rotate(-6deg) scale(1.05); }
.pillar-ico .br-icon { width: 28px; height: 28px; }
.pillar h3 { margin-bottom: 10px; }
.pillar p { color: var(--text-2); font-size: .95rem; }

/* ---------- 产品卡片 ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.prod-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s;
  cursor: pointer;
}
.prod-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(30, 111, 181, .4); }
.pc-media { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.pc-img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; }
.prod-card:hover .pc-img { transform: scale(1.07); }
.pc-overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: flex-end;
  gap: 14px; padding: 22px;
  background: linear-gradient(0deg, rgba(13, 22, 30, .88) 0%, rgba(13, 22, 30, .35) 60%, transparent 100%);
  opacity: 0; transform: translateY(14px);
  transition: opacity .35s ease, transform .35s ease;
}
.prod-card:hover .pc-overlay { opacity: 1; transform: none; }
.pc-brief { color: #e8eef3; font-size: .92rem; }
.pc-cat {
  position: absolute; top: 14px; left: 14px;
  background: rgba(255, 255, 255, .92); color: var(--c-steel);
  font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  padding: 5px 11px; border-radius: 999px;
}
[data-theme="dark"] .pc-cat { background: rgba(26, 36, 46, .92); color: var(--text); }
.pc-body { padding: 20px 22px 24px; }
.pc-name { margin-bottom: 12px; }
.pc-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  font-size: .74rem; font-weight: 700; letter-spacing: .03em;
  padding: 4px 11px; border-radius: 6px;
  background: var(--bg-alt); color: var(--text-2);
  border: 1px solid var(--line);
}
.tag-blue { background: var(--c-accent-soft); color: var(--c-accent); border-color: transparent; }

/* 筛选栏 */
.filter-bar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px; flex-wrap: wrap;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  margin-bottom: 34px;
  box-shadow: var(--shadow-sm);
}
.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.filter {
  border: 1px solid var(--line); background: var(--surface-2);
  color: var(--text-2); font-weight: 600; font-size: .88rem;
  padding: 9px 16px; border-radius: 8px;
  transition: all .25s;
}
.filter:hover { border-color: var(--c-accent); color: var(--c-accent); }
.filter.is-active { background: var(--c-accent); border-color: var(--c-accent); color: #fff; }
.filter-search { display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 8px; padding: 0 12px; background: var(--surface-2); }
.filter-search .br-icon { width: 16px; height: 16px; color: var(--text-3); }
.filter-search input { border: none; outline: none; background: transparent; padding: 10px 0; width: 200px; }
.grid-empty { text-align: center; padding: 60px 0; color: var(--text-3); }

/* ---------- 行业 ---------- */
.industry-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.industry {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 26px 16px;
  text-align: center;
  transition: all .3s;
}
.industry:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--c-accent); }
.ind-ico { width: 48px; height: 48px; margin: 0 auto 14px; color: var(--c-accent); display: grid; place-items: center; border-radius: 12px; background: var(--c-accent-soft); transition: all .3s; }
.industry:hover .ind-ico { background: var(--c-accent); color: #fff; }
.ind-ico .br-icon { width: 24px; height: 24px; }
.industry h3 { font-size: .95rem; }

/* ---------- 流程 ---------- */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.process-step {
  position: relative;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; padding: 28px 24px;
  transition: all .3s;
}
.process-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.ps-num {
  font-size: 2.1rem; font-weight: 800; line-height: 1;
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block; margin-bottom: 16px;
}
.process-step h3 { margin-bottom: 8px; }
.process-step p { color: var(--text-2); font-size: .92rem; }
.process-step::after {
  content: ""; position: absolute; top: 32px; right: -16px;
  width: 14px; height: 2px; background: var(--line-strong);
}
.process-step:last-child::after { display: none; }

/* ---------- 案例卡片 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.case-grid.wide-grid { grid-template-columns: repeat(3, 1fr); }
.case-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .35s, box-shadow .35s;
  cursor: pointer;
}
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.cc-media { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.cc-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s; }
.case-card:hover .cc-media img { transform: scale(1.08); }
.cc-tag {
  position: absolute; top: 12px; left: 12px;
  background: var(--c-accent); color: #fff;
  font-size: .7rem; font-weight: 700; letter-spacing: .05em;
  padding: 4px 10px; border-radius: 999px;
}
.cc-body { padding: 20px 20px 22px; }
.cc-body h3 { font-size: 1.02rem; margin-bottom: 8px; }
.cc-loc { display: flex; align-items: center; gap: 6px; color: var(--text-3); font-size: .82rem; margin-bottom: 10px; }
.cc-loc .br-icon { width: 14px; height: 14px; }
.cc-sum {
  color: var(--text-2); font-size: .88rem;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 14px;
}
.cc-more { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; font-size: .85rem; color: var(--c-accent); }
.cc-more .br-icon { width: 15px; height: 15px; transition: transform .25s; }
.case-card:hover .cc-more .br-icon { transform: translateX(4px); }

/* ---------- 新闻卡片 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .35s, box-shadow .35s;
  cursor: pointer;
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.nc-media { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.nc-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s; }
.news-card:hover .nc-media img { transform: scale(1.08); }
.nc-date {
  position: absolute; right: 12px; bottom: 12px;
  background: rgba(255, 255, 255, .94); color: var(--c-steel);
  font-size: .72rem; font-weight: 700; padding: 4px 10px; border-radius: 6px;
}
[data-theme="dark"] .nc-date { background: rgba(26, 36, 46, .94); color: var(--text); }
.nc-body { padding: 20px 22px 24px; }
.nc-cat { display: inline-block; font-size: .74rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--c-accent); margin-bottom: 8px; }
.nc-body h3 { font-size: 1.05rem; margin-bottom: 10px; line-height: 1.4; }
.nc-ex {
  color: var(--text-2); font-size: .88rem;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 14px;
}
.nc-more { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; font-size: .85rem; color: var(--c-accent); }
.nc-more .br-icon { width: 15px; height: 15px; transition: transform .25s; }
.news-card:hover .nc-more .br-icon { transform: translateX(4px); }

/* ---------- 内页 Hero ---------- */
.page-hero {
  position: relative;
  padding: 168px 0 96px;
  overflow: hidden;
  background: var(--c-steel);
}
.page-hero-bg {
  position: absolute; inset: -6%;
  background-size: cover; background-position: center;
  transform: scale(1.06);
  will-change: transform;
}
.page-hero-shade {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(13,22,30,.88) 0%, rgba(13,22,30,.66) 50%, rgba(13,22,30,.3) 100%);
}
.page-hero-inner { position: relative; z-index: 2; max-width: 780px; color: #fff; }
.page-hero .hero-kicker { color: #bcd4ea; }
.page-hero h1 { color: #fff; margin-bottom: 18px; }
.page-hero-text { color: rgba(255,255,255,.88); font-size: 1.08rem; max-width: 640px; }

/* ---------- 关于页 ---------- */
.quote {
  border-left: 4px solid var(--c-accent-2);
  background: var(--c-accent-soft);
  padding: 18px 22px;
  border-radius: 0 12px 12px 0;
  color: var(--text);
  font-style: italic;
  font-weight: 600;
  margin-top: 8px;
}
.timeline { position: relative; max-width: 860px; margin: 0 auto; }
.timeline::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--c-accent), var(--c-accent-2), transparent); transform: translateX(-50%); }
.tl-item { position: relative; width: 50%; padding: 0 40px 44px; }
.tl-item.tl-right { margin-left: 50%; }
.tl-dot {
  position: absolute; top: 8px; right: -7px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--c-accent); border: 3px solid var(--surface);
  box-shadow: 0 0 0 2px var(--c-accent);
}
.tl-item.tl-right .tl-dot { left: -7px; right: auto; }
.tl-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 20px 22px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s, box-shadow .3s;
}
.tl-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.tl-year { display: block; font-weight: 800; color: var(--c-accent); font-size: .85rem; letter-spacing: .08em; margin-bottom: 6px; }
.tl-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.tl-card p { color: var(--text-2); font-size: .9rem; }

.div-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.div-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 26px 22px;
  border-top: 3px solid var(--c-accent);
  transition: all .3s;
}
.div-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.div-card h3 { font-size: 1.02rem; margin-bottom: 10px; }
.div-card p { color: var(--text-2); font-size: .9rem; }

.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 10px; }
.cert-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 24px 20px;
  text-align: center;
  transition: all .3s;
}
.cert-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--c-accent-2); }
.cert-name { display: block; font-size: 1.15rem; font-weight: 800; color: var(--c-accent); margin-bottom: 6px; }
.cert-note { font-size: .82rem; color: var(--text-3); }

.cap-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.cap-item {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 22px 14px;
  text-align: center; font-size: .86rem; font-weight: 600; color: var(--text-2);
  transition: all .3s;
}
.cap-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); color: var(--text); border-color: var(--c-accent); }
.cap-ico { width: 44px; height: 44px; margin: 0 auto 12px; color: var(--c-accent); background: var(--c-accent-soft); border-radius: 12px; display: grid; place-items: center; }
.cap-ico .br-icon { width: 22px; height: 22px; }

.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.value-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; padding: 30px 24px;
  box-shadow: var(--shadow-sm);
  transition: all .3s;
}
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(30,111,181,.4); }
.value-ico { width: 50px; height: 50px; border-radius: 12px; background: var(--c-accent-soft); color: var(--c-accent); display: grid; place-items: center; margin-bottom: 16px; }
.value-ico .br-icon { width: 24px; height: 24px; }
.value-card h3 { margin-bottom: 8px; }
.value-card p { color: var(--text-2); font-size: .9rem; }

/* ---------- 定制页 ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; padding: 30px 26px;
  box-shadow: var(--shadow-sm);
  transition: all .3s;
  position: relative;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(30,111,181,.4); }
.svc-ico { width: 54px; height: 54px; border-radius: 14px; background: var(--c-accent-soft); color: var(--c-accent); display: grid; place-items: center; margin-bottom: 18px; transition: all .3s; }
.service-card:hover .svc-ico { background: var(--c-accent); color: #fff; }
.svc-ico .br-icon { width: 26px; height: 26px; }
.service-card h3 { margin-bottom: 10px; }
.service-card > p { color: var(--text-2); font-size: .92rem; margin-bottom: 16px; }
.svc-points { list-style: none; }
.svc-points li { display: flex; align-items: flex-start; gap: 10px; color: var(--text-2); font-size: .88rem; padding: 5px 0; }
.svc-points .br-icon { width: 17px; height: 17px; color: var(--c-accent); margin-top: 3px; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.cinfo-list { list-style: none; display: grid; gap: 4px; margin-bottom: 26px; }
.cinfo-list li { display: flex; gap: 16px; padding: 14px 0; border-bottom: 1px dashed var(--line); }
.cinfo-ico { width: 46px; height: 46px; flex: none; border-radius: 12px; background: var(--c-accent-soft); color: var(--c-accent); display: grid; place-items: center; }
.cinfo-ico .br-icon { width: 22px; height: 22px; }
.cinfo-label { display: block; font-size: .78rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-3); margin-bottom: 2px; }
.cinfo-value { font-weight: 600; color: var(--text); }
.cinfo-dist {
  background: var(--surface); border: 1px solid var(--line);
  border-left: 3px solid var(--c-accent-2);
  border-radius: 10px; padding: 18px 20px;
}
.cinfo-dist h4 { font-size: .95rem; margin-bottom: 6px; }
.cinfo-dist p { color: var(--text-2); font-size: .86rem; }

.cform {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow-md);
}
.cform h3 { margin-bottom: 24px; }
.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.f-field { margin-bottom: 16px; }
.f-field label { display: block; font-size: .84rem; font-weight: 600; color: var(--text-2); margin-bottom: 6px; }
.f-field input, .f-field select, .f-field textarea {
  width: 100%; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 8px;
  background: var(--surface-2); color: var(--text);
  transition: border-color .2s, box-shadow .2s;
}
.f-field input:focus, .f-field select:focus, .f-field textarea:focus {
  outline: none; border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--ring);
}
.f-field textarea { resize: vertical; min-height: 120px; }
.f-privacy { font-size: .8rem; color: var(--text-3); margin-top: 12px; text-align: center; }
.f-success {
  background: var(--c-accent-soft); border: 1px solid rgba(30,111,181,.3);
  color: var(--c-accent); font-weight: 600;
  border-radius: 10px; padding: 20px; text-align: center;
}
.f-error {
  background: rgba(205, 142, 9, .08); border: 1px solid rgba(205,142,9,.35);
  color: #a06a06; font-weight: 600;
  border-radius: 10px; padding: 20px; text-align: center;
}
[data-theme="dark"] .f-error { color: #e5b458; background: rgba(205, 142, 9, .12); }

.map-embed { position: relative; border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-md); background: var(--surface); }
.map-frame { width: 100%; height: 380px; border: 0; display: block; filter: grayscale(0.15) contrast(1.02); }
.map-loading { height: 380px; display: grid; place-items: center; color: var(--text-3); }
.map-static { width: 100%; height: 380px; object-fit: cover; }
.map-img-link { display: block; position: relative; }
.map-img-link img { width: 100%; height: auto; object-fit: contain; display: block; }
.map-link { position: absolute; right: 14px; bottom: 14px; background: rgba(255,255,255,.94); color: var(--c-steel); font-size: .8rem; font-weight: 700; padding: 6px 12px; border-radius: 6px; box-shadow: var(--shadow-sm); }
[data-theme="dark"] .map-link { background: rgba(21,29,36,.94); color: var(--text); }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  position: relative;
  background:
    radial-gradient(1200px 400px at 15% 0%, rgba(30,111,181,.35), transparent 60%),
    radial-gradient(900px 380px at 90% 100%, rgba(205,142,9,.28), transparent 55%),
    var(--c-steel);
  overflow: hidden;
  border-radius: 18px;
  margin: 0 auto;
  padding: 70px 0;
}
.cta-glow {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: .6;
}
.cta-inner { position: relative; z-index: 2; text-align: center; color: #fff; }
.cta-inner h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.3rem); margin-bottom: 14px; }
.cta-inner p { color: rgba(255,255,255,.85); max-width: 560px; margin: 0 auto 30px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 弹层 ---------- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(10, 16, 22, .62);
  backdrop-filter: blur(6px);
  display: grid; place-items: center;
  padding: 20px;
  animation: fadeIn .2s ease;
}
.modal-panel {
  position: relative;
  width: min(860px, 100%);
  max-height: 88vh;
  overflow-y: auto;
  background: var(--surface);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  animation: riseIn .3s ease;
}
.modal-close {
  position: sticky; top: 14px; z-index: 5; margin-left: calc(100% - 56px);
  width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid var(--line); background: var(--surface);
  color: var(--text); display: grid; place-items: center;
  transition: all .25s;
}
.modal-close:hover { background: var(--c-accent); color: #fff; border-color: var(--c-accent); }
.modal-body { padding: 0 34px 34px; }

/* 产品详情 */
.pd-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 34px; align-items: start; }
.pd-media { border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-md); }
.pd-media img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.pd-info h3 { font-size: 1.7rem; margin-bottom: 12px; }
.pd-desc { color: var(--text-2); margin-bottom: 18px; }
.pd-feats { list-style: none; display: grid; gap: 8px; margin-bottom: 20px; }
.pd-feats li { display: flex; align-items: center; gap: 10px; color: var(--text-2); font-size: .93rem; }
.pd-feats .br-icon { width: 18px; height: 18px; color: var(--c-accent); }
.pd-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; }
.meta-chip { border: 1px solid var(--line); background: var(--surface-2); padding: 6px 14px; border-radius: 999px; font-weight: 700; font-size: .82rem; color: var(--text-2); }
.pd-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* 案例 / 新闻详情 */
.cd-media { border-radius: 12px; overflow: hidden; margin-bottom: 22px; box-shadow: var(--shadow-md); }
.cd-media img { width: 100%; max-height: 340px; object-fit: cover; }
.cd-wrap h3, .nd-wrap h3 { font-size: 1.55rem; margin-bottom: 12px; }
.cd-facts { display: flex; gap: 26px; flex-wrap: wrap; margin: 14px 0; color: var(--text-3); font-size: .9rem; }
.cd-facts b { color: var(--text); }
.cd-summary { color: var(--text-2); margin-bottom: 14px; }
.cd-results { list-style: none; display: grid; gap: 8px; margin-bottom: 24px; }
.cd-results li { display: flex; gap: 10px; align-items: center; color: var(--text-2); }
.cd-results .br-icon { width: 18px; height: 18px; color: var(--c-accent); }
.nd-wrap p { color: var(--text-2); margin-bottom: 14px; }

/* ---------- 回到顶部 ---------- */
#back-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 80;
  width: 50px; height: 50px; border-radius: 12px;
  border: none; background: var(--c-accent); color: #fff;
  display: grid; place-items: center;
  box-shadow: var(--shadow-md);
  opacity: 0; transform: translateY(16px) scale(.9);
  pointer-events: none;
  transition: all .35s;
}
#back-top.is-visible { opacity: 1; transform: none; pointer-events: auto; }
#back-top:hover { background: #175d99; transform: translateY(-4px); }
#back-top .br-icon { width: 22px; height: 22px; }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 90px;
  background: #131b23;
  color: #a7b4bd;
  border-top: 3px solid var(--c-accent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: 64px 0 40px;
}
.foot-brand .brand-logo { height: 40px; margin-bottom: 16px; filter: brightness(0) invert(1); opacity: .95; }
.foot-about { font-size: .9rem; color: #8fa0ad; max-width: 320px; margin-bottom: 18px; }
.foot-certs { display: flex; gap: 8px; flex-wrap: wrap; }
.cert-chip { border: 1px solid #2b3944; color: #bcd4ea; font-size: .72rem; font-weight: 700; padding: 4px 10px; border-radius: 5px; }
.foot-col h4 { color: #e8edf1; font-size: .95rem; margin-bottom: 18px; letter-spacing: .04em; }
.foot-nav { display: grid; gap: 10px; }
.foot-link { color: #8fa0ad; font-size: .9rem; transition: all .2s; }
.foot-link:hover { color: #fff; padding-left: 4px; }
.foot-contact { list-style: none; display: grid; gap: 12px; }
.foot-contact li { display: flex; gap: 10px; align-items: flex-start; font-size: .88rem; color: #8fa0ad; }
.foot-contact .br-icon { width: 17px; height: 17px; color: var(--c-accent-2); margin-top: 3px; }
.foot-contact a { color: #8fa0ad; }
.foot-contact a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #1f2a33; padding: 22px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: .82rem; color: #6d7d89; }
.foot-tag { letter-spacing: .05em; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .cap-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .div-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .site-nav {
    position: fixed; top: 74px; right: -100%;
    width: min(320px, 86%); height: calc(100vh - 74px);
    background: var(--surface);
    border-left: 1px solid var(--line);
    flex-direction: column; align-items: flex-start;
    padding: 26px 24px; gap: 4px;
    transition: right .35s ease;
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
  }
  body.menu-open .site-nav { right: 0; }
  .nav-link { width: 100%; font-size: 1.02rem; padding: 12px 14px; }
  .nav-utils-inline { display: flex; margin-top: 18px; }
  .menu-btn { display: grid; }
  .nav-utils { display: none !important; }
  .nav-utils-inline { display: flex !important; }

  .split { grid-template-columns: 1fr; gap: 36px; }
  .pillar-grid, .prod-grid, .service-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .case-grid.wide-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2)::after { display: none; }
  .hero-arrow { display: none; }
  .pd-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .pillar-grid, .prod-grid, .service-grid, .process-grid,
  .value-grid, .news-grid, .case-grid, .case-grid.wide-grid,
  .industry-grid, .cap-grid, .div-grid, .cert-grid, .footer-grid,
  .f-row { grid-template-columns: 1fr; }
  .section-pad { padding: 60px 0; }
  .brand-name { display: none; }
  .stats-strip { grid-template-columns: 1fr 1fr; padding: 28px 12px; }
  .modal-body { padding: 0 20px 24px; }
  .hero { min-height: 520px; }
  .timeline::before { left: 8px; }
  .tl-item, .tl-item.tl-right { width: 100%; margin-left: 0; padding-left: 36px; padding-right: 0; }
  .tl-dot, .tl-item.tl-right .tl-dot { left: 2px; right: auto; }
  .hero-cta .btn { width: 100%; justify-content: center; }
}

/* ---------- 无障碍 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 2px; }

/* ============================================================
 * 多语言适配（22 种语言）
 * ============================================================ */

/* ---------- RTL 镜像（阿拉伯语、希伯来语） ---------- */
[dir="rtl"] body { direction: rtl; text-align: right; }
[dir="rtl"] .container { direction: rtl; }

/* 导航栏镜像 */
[dir="rtl"] .header-inner { flex-direction: row-reverse; }
[dir="rtl"] .site-nav { flex-direction: row-reverse; }

/* 图标镜像（箭头等方向性图标） */
[dir="rtl"] .br-icon.arrowRight,
[dir="rtl"] .br-icon.arrowUp { transform: scaleX(-1); }

/* 搜索浮层 */
[dir="rtl"] .search-field { flex-direction: row-reverse; }

/* 卡片网格保持不变（grid 自动适配 RTL） */
/* 时间线镜像 */
[dir="rtl"] .timeline::before { left: auto; right: 8px; }
[dir="rtl"] .tl-item { margin-left: 0; margin-right: 0; padding-left: 0; padding-right: 36px; }
[dir="rtl"] .tl-dot { left: auto; right: 2px; }
[dir="rtl"] .tl-item.tl-right { margin-right: 0; padding-right: 36px; }

/* 页脚 */
[dir="rtl"] .footer-grid { direction: rtl; }
[dir="rtl"] .footer-bottom .container { flex-direction: row-reverse; }

/* 回到顶部按钮 */
[dir="rtl"] .back-top { right: auto; left: 24px; }

/* 悬浮卡片 */
[dir="rtl"] .lang-dropdown { inset-inline-end: 0; inset-inline-start: auto; }

/* ---------- 多语种字体 ---------- */
[lang="zh-CN"] body, [lang="zh-CN"] input, [lang="zh-CN"] select, [lang="zh-CN"] textarea,
[lang="zh-CN"] button { font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Noto Sans", sans-serif; }
[lang="ja"] body, [lang="ja"] input, [lang="ja"] select, [lang="ja"] textarea,
[lang="ja"] button { font-family: "Noto Sans JP", "Noto Sans", "Yu Gothic", sans-serif; }
[lang="ko"] body, [lang="ko"] input, [lang="ko"] select, [lang="ko"] textarea,
[lang="ko"] button { font-family: "Noto Sans KR", "Noto Sans", "Malgun Gothic", sans-serif; }
[lang="ar"] body, [lang="ar"] input, [lang="ar"] select, [lang="ar"] textarea,
[lang="ar"] button { font-family: "Noto Sans Arabic", "Noto Sans", "Tahoma", sans-serif; }
[lang="he"] body, [lang="he"] input, [lang="he"] select, [lang="he"] textarea,
[lang="he"] button { font-family: "Noto Sans Hebrew", "Noto Sans", "Tahoma", sans-serif; }
[lang="th"] body, [lang="th"] input, [lang="th"] select, [lang="th"] textarea,
[lang="th"] button { font-family: "Noto Sans Thai", "Noto Sans", "Tahoma", sans-serif; }
[lang="hi"] body, [lang="hi"] input, [lang="hi"] select, [lang="hi"] textarea,
[lang="hi"] button { font-family: "Noto Sans Devanagari", "Noto Sans", "Mangal", sans-serif; }
[lang="ru"] body, [lang="ru"] input, [lang="ru"] select, [lang="ru"] textarea,
[lang="ru"] button { font-family: "Noto Sans", "Segoe UI", Arial, sans-serif; }
[lang="uk"] body, [lang="uk"] input, [lang="uk"] select, [lang="uk"] textarea,
[lang="uk"] button { font-family: "Noto Sans", "Segoe UI", Arial, sans-serif; }

/* ---------- 文本溢出容差（德语等长文本语言） ---------- */
/* 按钮使用弹性宽度，允许文本自然撑开 */
.btn { white-space: nowrap; overflow: visible; text-overflow: clip; }
@media (max-width: 768px) {
  .btn { white-space: normal; }
}

/* 导航菜单项允许换行 */
.nav-link { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px; }

/* 卡片标题允许自然换行 */
.pillar-card h3, .prod-card h3, .service-card h3, .case-card h3,
.news-card h3, .value-card h3, .cert-card h3 { word-break: break-word; overflow-wrap: break-word; }

/* 表单标签自适应 */
.form-row label { white-space: normal; overflow-wrap: break-word; }

/* 统计数字保持不换行 */
.stat-num, .mb-num { white-space: nowrap; }

/* 搜索提示芯片允许伸缩 */
.hint-chip { white-space: nowrap; max-width: 240px; overflow: hidden; text-overflow: ellipsis; }

/* 页脚链接允许换行 */
.foot-link { white-space: normal; word-break: break-word; }

/* 产品描述 */
.pd-desc, .cd-summary, .news-excerpt { overflow-wrap: break-word; word-break: break-word; }

/* CTA 区文本 */
.cta-band h2 { word-break: break-word; overflow-wrap: break-word; }