/* ==========================================================================
   MIELFELD 官网 · 设计系统 v2（VI 规范版）
   主色：标准绿 #205A2F ｜ 深空绿 #12331B ｜ 雾绿 #EAF1EB
   点缀：工程橙 #E87722（仅用于"活元素"：气泡/波纹/微强调，面积 ≤5%）
   纯 CSS，无框架依赖；动效仅 transform/opacity，尊重 prefers-reduced-motion
   ========================================================================== */

/* 全站字体：思源黑体（Noto Sans SC）。字体 CSS 由各页 head 中的
   <link rel="preconnect"> + <link rel="stylesheet">（fonts.googleapis.cn 国内镜像）并行加载，
   此处不放 @import —— @import 会被 CSS 串行发现，拖慢首屏文字渲染（LCP） */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 品牌绿阶 */
  --accent: #205a2f;        /* 标准绿 PANTONE 3495C */
  --accent-600: #1b4e28;
  --accent-700: #16401f;
  --accent-200: #a9c9b1;
  --accent-100: #dce8de;
  --accent-50: #eff4f0;     /* 雾绿 · v7 提亮 */

  /* 深空绿（暗色面）· v7 整体调淡一档 */
  --ink-950: #0e2416;
  --ink-900: #173e26;
  --ink-800: #214d30;
  --ink-700: #2e5c3e;

  /* 中性文字（微绿灰）· ink-400 提深至 WCAG AA（白底 5.27:1，paper-3 上 4.78:1） */
  --ink-400: #5f7064;
  --ink-300: #93a196;
  --ink-200: #c6d1c8;

  /* 深底文字令牌 · 全部在最不利深底（ink-900/ink-950/半透明面板）上 ≥4.5:1 */
  --on-dark-body: rgba(255, 255, 255, 0.9);   /* 深底正文 ≈10:1 */
  --on-dark-soft: rgba(255, 255, 255, 0.65);  /* 深底辅助文字 ≈6:1 */

  /* 工程橙（活元素专用） */
  --orange: #e87722;
  --orange-deep: #c4551a;
  --orange-50: #fbede2;

  /* 纸面 */
  --paper: #ffffff;
  --paper-2: #f8faf8;
  --paper-3: #f1f5f2;
  --line: #e6ece7;

  /* 字体：全站统一思源黑体（在线 webfont 优先，本机已装则直接命中，兜底系统黑体） */
  --font-sans: "Source Han Sans SC", "Source Han Sans", "Noto Sans SC",
    "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue",
    Arial, sans-serif;
  --font-mono: "Noto Sans SC", "Source Han Sans SC", "Source Han Sans",
    "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;

  /* 版式（--maxw 随屏幕宽度分档放大，见第 19 节响应式） */
  --maxw: 1200px;
  --gutter: 28px;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-1: 0 1px 2px rgba(10, 26, 16, 0.05);
  --shadow-2: 0 10px 30px rgba(10, 26, 16, 0.09);
  --shadow-3: 0 22px 60px rgba(10, 26, 16, 0.16);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --header-h: 64px;
}

/* ---------- 2. Reset 与基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip; /* 兜底：任何比例下都不出现横向滚动条（clip 不影响 sticky） */
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-900);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
button { font: inherit; cursor: pointer; border: 0; background: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--accent-100); }

.icon {
  width: 1.25em;
  height: 1.25em;
  flex: none;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: -0.25em;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* 刘海屏 / 曲面屏安全区（不支持的浏览器自动忽略） */
@supports (padding: max(0px)) {
  .wrap {
    padding-left: max(var(--gutter), env(safe-area-inset-left));
    padding-right: max(var(--gutter), env(safe-area-inset-right));
  }
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 3. 顶部两行布局 ---------- */
.topbar {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.topbar-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 78px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
}

/* 标准 VI LOGO（源文件：米费勒VI-21 中文+英文横排，透明底，图形零改动）
   object-fit:contain 完整显示横排版式，不裁切；深浅底均用同一源文件 */
.logo-crop { width: 156px; height: 46px; overflow: hidden; flex: none; }
.logo-crop .logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center 49%;
}

@media (max-width: 900px) { .logo-crop { width: 132px; height: 40px; } }
@media (max-width: 640px) { .logo-crop { width: 116px; height: 34px; } }

.top-contact {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-900);
}

.top-contact .icon { width: 20px; height: 20px; color: var(--accent); }

.top-contact b {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

/* 英文站顶部栏：标签与邮箱分两行（中文站已删 small，此规则只作用于 en） */
.top-contact span small { display: block; font-size: 11px; font-weight: 500; opacity: 0.72; letter-spacing: 0.04em; text-transform: uppercase; }
.top-contact span b { display: block; font-size: 15px; line-height: 1.35; }

/* 主导航（第二行） */
.navbar {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.25s var(--ease);
}

.navbar.is-stuck { box-shadow: var(--shadow-2); }

.nav-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-list > li { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 17px;
  height: var(--header-h);
  font-size: 15px;
  color: var(--ink-900);
  position: relative;
  transition: color 0.2s;
}

/* 悬停/激活：工程橙下划线活元素（线条非文字，用标准橙） */
.nav-link::after {
  content: "";
  position: absolute;
  left: 17px;
  right: 17px;
  bottom: 14px;
  height: 2px;
  border-radius: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s var(--ease);
}

.nav-link:hover { color: var(--accent-700); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link .icon { width: 14px; height: 14px; opacity: 0.55; transition: transform 0.25s var(--ease); }

.has-drop:hover .nav-link .icon { transform: rotate(180deg); }

/* 下拉菜单 */
.drop {
  position: absolute;
  top: 100%;
  left: 8px;
  min-width: 250px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-3);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
}

.has-drop:hover .drop,
.has-drop:focus-within .drop {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.drop a {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 10px 14px;
  border-radius: 8px;
  transition: background 0.18s;
}

.drop a:hover { background: var(--accent-50); }

.drop a b { font-size: 14px; font-weight: 500; color: var(--ink-900); }

.drop a span { font-size: 12px; color: var(--ink-400); }

.drop a em {
  font-style: normal;
  font-size: 10.5px;
  color: var(--orange-deep);
  background: var(--orange-50);
  border: 1px solid #f4d9c2;
  padding: 0 6px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: 1px;
}

/* 语言切换 / 汉堡 */
.nav-side { display: flex; align-items: center; gap: 8px; }

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  color: var(--ink-400);
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color 0.2s, border-color 0.2s;
}

.lang-switch:hover { color: var(--accent-600); border-color: var(--accent-200); }

.burger {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  position: relative;
}

.burger span,
.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 11px;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink-900);
  transition: transform 0.3s var(--ease), top 0.3s var(--ease), opacity 0.2s;
}

.burger span { top: 21px; }
.burger span::before { top: -7px; left: 0; }
.burger span::after { top: 7px; left: 0; }

.nav-open .burger span { background: transparent; }
.nav-open .burger span::before { top: 0; transform: rotate(45deg); }
.nav-open .burger span::after { top: 0; transform: rotate(-45deg); }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 52px;
  padding: 0 30px;
  border-radius: 999px;
  font-size: 15.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s, color 0.2s, border-color 0.2s;
  min-height: 44px;
}

.btn .icon { transition: transform 0.2s var(--ease); }
.btn:hover .icon { transform: translateX(4px); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 24px rgba(32, 90, 47, 0.32);
}

.btn-primary:hover { background: var(--accent-600); transform: translateY(-2px); }

.btn-ghost {
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  color: #fff;
}

.btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); transform: translateY(-2px); }

.btn-outline {
  border: 1.5px solid var(--ink-200);
  color: var(--ink-900);
}

.btn-outline:hover { border-color: var(--accent-600); color: var(--accent-700); }

.btn-sm { height: 44px; padding: 0 22px; font-size: 14px; }

/* 首屏双按钮：等宽、结构一致（都有箭头） */
.hero-cta .btn { min-width: 212px; }

/* ---------- 5. Hero（深空绿 + 上升气泡活元素，无 AI 图片） ---------- */
.hero {
  position: relative;
  min-height: min(88vh, 820px);
  display: flex;
  align-items: center;
  background:
    /* ① 阳光本体：光源在右上角画面外，光弧以光源为圆心逐级单调衰减，
          全程只有「由明到暗」一个方向，无光带、无分束、无局部光斑 */
    radial-gradient(
      1350px 1120px at 106% -16%,
      rgba(198, 240, 198, 0.34) 0%,
      rgba(182, 232, 182, 0.26) 12%,
      rgba(164, 222, 166, 0.18) 28%,
      rgba(146, 206, 152, 0.11) 46%,
      rgba(130, 188, 138, 0.05) 64%,
      rgba(122, 180, 132, 0.015) 80%,
      rgba(120, 178, 130, 0) 92%
    ),
    /* ② 左上微弱补光（环境层次，几乎不可察） */
    radial-gradient(900px 640px at 2% -12%, rgba(36, 100, 54, 0.16), transparent 74%),
    /* ③ 底部环境光（微弱，避免下边缘死黑） */
    radial-gradient(1400px 720px at 46% 118%, rgba(30, 88, 48, 0.18), transparent 74%),
    linear-gradient(160deg, var(--ink-900) 0%, var(--ink-950) 72%);
  color: #fff;
  overflow: hidden;
}

/* 移动端浏览器地址栏伸缩：优先用动态视口高度，避免首屏跳动 */
@supports (min-height: 100dvh) {
  .hero { min-height: min(88dvh, 820px); }
}

.hero .wrap {
  position: relative;
  z-index: 3;
  width: 100%;
  padding-top: 90px;
  padding-bottom: 130px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--accent-200);
  text-transform: uppercase;
  margin-bottom: 26px;
}

.hero-eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--orange);
}

.hero h1 {
  font-size: clamp(31px, 5.4vw, 68px);
  line-height: 1.16;
  font-weight: 600;
  letter-spacing: -0.015em;
  max-width: 15em;
  overflow-wrap: break-word;
}

.hero h1 em {
  font-style: normal;
  color: var(--orange);
}

.hero-sub {
  margin-top: 24px;
  font-size: clamp(15px, 1.6vw, 18px);
  color: rgba(255, 255, 255, 0.78);
  max-width: 34em;
  font-weight: 400;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 44px;
}

/* 上升气泡（活元素：白绿为主，橙点仅 2 个） */
.hero-bubbles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.bub {
  position: absolute;
  bottom: -8%;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.03) 60%);
  animation: bubRise var(--t, 16s) linear infinite;
  animation-delay: var(--dl, 0s);
  opacity: 0;
}

.bub.orange {
  border-color: rgba(232, 119, 34, 0.55);
  background: radial-gradient(circle at 32% 28%, rgba(232, 119, 34, 0.5), rgba(232, 119, 34, 0.08) 62%);
}

@keyframes bubRise {
  0% { transform: translateY(0) scale(0.9); opacity: 0; }
  8% { opacity: var(--op, 0.7); }
  88% { opacity: var(--op, 0.7); }
  100% { transform: translateY(-108vh) scale(1.06); opacity: 0; }
}

.scroll-hint {
  position: absolute;
  right: max(28px, calc((100% - var(--maxw)) / 2 + 28px));
  bottom: 40px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--on-dark-soft);
}

.scroll-hint::after {
  content: "";
  width: 1px;
  height: 42px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.5), transparent);
  animation: hintDrop 2.2s var(--ease) infinite;
}

@keyframes hintDrop {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- 6. 数据信任条 ---------- */
.trust {
  background: var(--ink-950);
  color: #fff;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.trust-item {
  padding: 34px 12px;
  text-align: center;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.trust-item:first-child { border-left: 0; }

/* 数据高亮：VI 允许的关键数据用橙（深底按规范提亮一档 #F08A3C） */
.trust-num {
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 600;
  line-height: 1.1;
  color: #f08a3c;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.trust-num i { font-style: normal; font-size: 0.55em; margin-left: 3px; color: rgba(255, 255, 255, 0.75); }

.trust-label { margin-top: 8px; font-size: 13.5px; color: rgba(255, 255, 255, 0.62); }

/* ---------- 7. 通用 Section ---------- */
.section { padding: 84px 0; }
.section-tint { background: var(--accent-50); }
.section-dark { background: var(--ink-900); color: #fff; }

.sec-head { max-width: 680px; margin-bottom: 44px; }

.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* 带轮播箭头的标题行 */
.sec-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 40px;
}

.sec-row .sec-head { margin-bottom: 0; }

.car-arrows { display: flex; gap: 10px; flex: none; }

.car-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1.5px solid var(--ink-200);
  color: var(--ink-900);
  display: grid;
  place-items: center;
  transition: border-color 0.2s, color 0.2s, background 0.2s, opacity 0.2s, transform 0.2s var(--ease);
}

.car-btn .icon { width: 18px; height: 18px; }
.car-btn:hover:not(:disabled) { border-color: var(--orange); color: var(--orange-deep); background: var(--orange-50); }
.car-btn:active:not(:disabled) { transform: scale(0.94); }
.car-btn:disabled { opacity: 0.32; cursor: default; }

.section-dark .car-btn { border-color: rgba(255, 255, 255, 0.25); color: #fff; }
.section-dark .car-btn:hover:not(:disabled) { border-color: var(--orange); color: var(--orange); background: rgba(232, 119, 34, 0.08); }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 16px;
}

.kicker::before { content: ""; width: 26px; height: 1.5px; background: var(--orange); }

.section-dark .kicker { color: var(--accent-200); }

.sec-head h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.sec-head p { margin-top: 16px; color: var(--ink-400); font-size: 16px; }

.section-dark .sec-head p { color: var(--on-dark-soft); }
/* 深底区块内的长文排版：正文/加粗/链接必须换用深底配色（原浅底深字在深绿底上对比度仅 ~1.2:1） */
.section-dark .prose p { color: var(--on-dark-body); }
.section-dark .prose strong { color: #fff; }
.section-dark .prose a { color: var(--accent-200); text-decoration: underline; text-underline-offset: 3px; }
.section-dark .prose a:hover { color: #f08a3c; }

.sec-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  color: var(--accent);
  font-weight: 500;
  margin-top: 22px;
}

.sec-more .icon { transition: transform 0.2s var(--ease); }
.sec-more:hover { color: var(--orange-deep); }
.sec-more:hover .icon { transform: translateX(4px); }

/* ---------- 8. 轮播（一级目录下的子内容用滑动展示） ---------- */
.carousel { position: relative; }

.car-track {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 4px;
}

.car-track::-webkit-scrollbar { display: none; }

.car-track > * {
  flex: 0 0 calc((100% - 36px) / 3);
  scroll-snap-align: start;
}

.car-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
}

.car-dots button {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-200);
  padding: 0;
  transition: background 0.2s, transform 0.2s;
}

.car-dots button.on { background: var(--orange); transform: scale(1.35); }

/* ---------- 9. 产品技术线（浅底极简卡，轮播项；借鉴官网简约风） ---------- */
.prod-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid rgba(18, 51, 27, 0.10);
  border-radius: var(--radius);
  padding: 24px 24px 22px;
  color: var(--ink-900);
  box-shadow: 0 8px 24px rgba(18, 51, 27, 0.07);
  transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s var(--ease);
}

/* 顶部极简橙色细线，作为唯一品牌点缀 */
.prod-card::before {
  content: "";
  position: absolute;
  left: 24px; right: 24px; top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), rgba(232, 119, 34, 0));
  border-radius: 0 0 3px 3px;
}

.prod-card:hover {
  transform: translateY(-6px);
  border-color: rgba(32, 90, 47, 0.30);
  box-shadow: 0 18px 40px rgba(18, 51, 27, 0.13);
}

.prod-icon {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(32, 90, 47, 0.10);
  border: 1px solid rgba(32, 90, 47, 0.18);
  color: var(--ink-800);
}

.prod-icon .icon { width: 22px; height: 22px; }

/* 产品实物图展区（浅绿底悬浮，极简） */
.prod-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex: 1 1 auto;
  min-height: 210px;
  margin: 0 0 22px;
  border-radius: 12px;
  border: 1px solid rgba(18, 51, 27, 0.06);
  background: linear-gradient(180deg, #f4f9f5, #eaf1eb);
  overflow: hidden;
}
.prod-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(220px 120px at 50% 60%, rgba(255, 255, 255, 0.7), transparent 70%);
  pointer-events: none;
}
.prod-visual img {
  position: relative;
  z-index: 1;
  max-height: 178px;
  width: auto;
  max-width: 86%;
  filter: drop-shadow(0 14px 24px rgba(18, 51, 27, 0.20));
  transition: transform 0.35s var(--ease);
}
.prod-card:hover .prod-visual img { transform: translateY(-6px) scale(1.04); }
.prod-visual.multi img { max-height: 134px; max-width: 30%; }

.prod-head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.prod-tt { display: flex; flex-direction: column; }

.prod-card h3 { font-size: 19px; font-weight: 600; position: relative; color: var(--ink-900); }

.prod-card .sub {
  font-size: 12.5px;
  color: #7c8c80;
  margin-top: 4px;
  letter-spacing: 0.04em;
}

.prod-card p {
  font-size: 13.5px;
  color: rgba(18, 51, 27, 0.6);
  margin-top: 14px;
  flex: 1;
}

.prod-specs {
  display: flex;
  gap: 18px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid rgba(18, 51, 27, 0.10);
  font-size: 12px;
  color: rgba(18, 51, 27, 0.55);
  font-variant-numeric: tabular-nums;
}

.prod-specs b { display: block; color: var(--ink-900); font-size: 15px; font-weight: 600; }

.prod-card .go {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: auto;
  padding-top: 20px;
  font-size: 13.5px;
  color: var(--orange);
  font-weight: 500;
}

.prod-card:hover .go .icon { transform: translateX(4px); }
.prod-card .go .icon { transition: transform 0.2s var(--ease); }

/* ---------- 9b. 技术参数带（V1.2 口径硬指标） ---------- */
.spec-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.spec-cell {
  padding: 0 26px;
  border-left: 1px solid var(--line);
}

.spec-cell:first-child {
  border-left: 0;
  padding-left: 0;
}

.spec-cell b {
  display: block;
  font-size: clamp(17px, 1.55vw, 22px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  font-variant-numeric: tabular-nums;
  margin-bottom: 7px;
}

.spec-cell > span {
  display: block;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-400);
}

.spec-note {
  grid-column: 1 / -1;
  margin: 20px 0 0;
  font-size: 12px;
  color: var(--ink-400);
}

/* ---------- 10. 解决方案（浅色场景卡，轮播项） ---------- */
.sol-card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}

.sol-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2);
  border-color: rgba(232, 119, 34, 0.45);
}

.sol-card:hover .go { color: var(--orange-deep); }

.sol-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: #fbede2;
  border: 1px solid #f5dcc3;
  color: var(--orange);
  margin-bottom: 20px;
}

.sol-icon .icon {
  width: 24px;
  height: 24px;
  animation: sol-breath 2.8s ease-in-out infinite;
}

.sol-card:nth-child(even) .sol-icon .icon { animation-delay: 1.4s; }

@keyframes sol-breath {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.14); opacity: 0.72; }
}

.sol-card h3 { font-size: 18px; font-weight: 600; }

.sol-card p { font-size: 13.5px; color: var(--ink-400); margin-top: 10px; flex: 1; }

.sol-fit {
  display: inline-flex;
  align-self: flex-start;
  font-size: 11.5px;
  color: var(--ink-400);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
  margin-top: 18px;
}

.sol-card .go {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 16px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--accent);
}

.sol-card .go .icon { transition: transform 0.2s var(--ease); }
.sol-card:hover .go .icon { transform: translateX(4px); }

/* ---------- 11. 案例（轮播项） ---------- */
.case-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  display: flex;
  flex-direction: column;
}

.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-2); }

.case-visual {
  position: relative;
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  background:
    radial-gradient(300px 170px at 70% 20%, rgba(32, 90, 47, 0.4), transparent 70%),
    linear-gradient(160deg, var(--ink-800), var(--ink-950));
  color: #fff;
}

.case-visual b {
  font-size: clamp(30px, 3vw, 40px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #f08a3c;
}

/* 只命中数值下方的说明标签，避免误伤 b 内层的计数 span（.num） */
.case-visual > div > span { font-size: 12.5px; color: rgba(255, 255, 255, 0.6); margin-left: 7px; }

.case-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--orange);
  background: rgba(10, 26, 16, 0.55);
  border: 1px solid rgba(232, 119, 34, 0.4);
  padding: 4px 12px;
  border-radius: 999px;
}

.case-body { padding: 20px 22px 22px; }

.case-body h3 { font-size: 16px; font-weight: 600; line-height: 1.45; }

.case-body p { font-size: 13px; color: var(--ink-400); margin-top: 8px; }

/* ---------- 12. 本地服务（暗色 + 脉冲点阵地图 + 定位入口） ---------- */
.local-grid {
  display: grid;
  /* 地图列加宽：省会标签全覆盖后需要更多物理宽度才读得清 */
  grid-template-columns: 0.86fr 1.14fr;
  gap: 56px;
  align-items: center;
}

.local-copy h2 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 600; line-height: 1.25; }

.local-copy > p { margin-top: 16px; color: rgba(255, 255, 255, 0.6); font-size: 15.5px; }

/* 自动定位提示（原首屏定位胶囊迁到这里，不再遮挡按钮） */
.loc-now {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  padding: 12px 20px;
  border-radius: 12px;
  background: rgba(232, 119, 34, 0.1);
  border: 1px solid rgba(232, 119, 34, 0.45);
  font-size: 14.5px;
  color: #fff;
}

.loc-now .icon { color: var(--orange); }

.loc-now b { font-weight: 600; }

.city-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }

.city-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.city-chip:hover { border-color: var(--orange); color: #fff; background: rgba(232, 119, 34, 0.08); }

.local-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.local-actions .btn { min-width: 178px; }

.map-panel {
  position: relative;
  aspect-ratio: 4 / 3.6;
  border-radius: var(--radius);
  background:
    radial-gradient(400px 260px at 62% 42%, rgba(232, 119, 34, 0.1), transparent 70%),
    linear-gradient(165deg, var(--ink-800), var(--ink-950));
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.map-panel svg { position: absolute; inset: 0; width: 100%; height: 100%; }

/* 中国地图（标准国界数据生成，含台湾、南海诸岛与九段线） */
.map-land {
  fill: rgba(169, 201, 177, 0.17);
  stroke: rgba(169, 201, 177, 0.52);
  stroke-width: 0.7;
  stroke-linejoin: round;
}

.map-grid line { stroke: rgba(255, 255, 255, 0.05); stroke-width: 0.6; }

.mcity { cursor: default; }

.mcity .core {
  fill: rgba(255, 255, 255, 0.72);
  transition: fill 0.3s;
}

.mcity.is-svc .core { fill: var(--orange); }

.mcity .halo {
  fill: none;
  stroke: var(--orange);
  stroke-width: 1.4;
  opacity: 0;
  transform-origin: center;
  transform-box: fill-box;
}

.mcity.loc-here .halo { animation: pulse 2.6s ease-out infinite; }

.mcity.loc-here .halo { stroke: #f08a3c; stroke-width: 2; }

.mcity.loc-here .core { fill: #f08a3c; }

.mcity text {
  font-size: 11.5px;
  fill: rgba(255, 255, 255, 0.72);
  paint-order: stroke;
  stroke: rgba(10, 26, 16, 0.85);
  stroke-width: 2.5;
  transition: fill 0.3s;
}

.mcity.is-svc text { fill: rgba(255, 255, 255, 0.92); }

.mcity.loc-here text { fill: #f08a3c; font-weight: 600; }

.map-sea-note {
  font-size: 10.5px;
  fill: rgba(255, 255, 255, 0.38);
  letter-spacing: 0.1em;
}

.map-dot { transform-origin: center; transform-box: fill-box; }

.pulse { animation: pulse 2.6s ease-out infinite; transform-origin: center; transform-box: fill-box; }
.pulse.d2 { animation-delay: 0.9s; }
.pulse.d3 { animation-delay: 1.7s; }

@keyframes pulse {
  0% { transform: scale(0.4); opacity: 0.9; }
  70% { transform: scale(2.6); opacity: 0; }
  100% { transform: scale(2.6); opacity: 0; }
}

.map-tag {
  position: absolute;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(10, 26, 16, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 5px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

/* ---------- 13. 技术支持带（质保查询 + FAQ） ---------- */
.sup-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.warranty-card {
  position: relative;
  border-radius: var(--radius);
  padding: 36px 32px;
  color: #fff;
  overflow: hidden;
  background:
    radial-gradient(320px 200px at 88% -8%, rgba(232, 119, 34, 0.2), transparent 65%),
    linear-gradient(160deg, var(--ink-800), var(--ink-950));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.warranty-card .icon { width: 40px; height: 40px; color: var(--orange); }

.warranty-card h3 { font-size: 21px; font-weight: 600; margin-top: 18px; }

.warranty-card p { margin-top: 12px; font-size: 14px; color: rgba(255, 255, 255, 0.62); }

.warranty-steps {
  margin-top: 20px;
  display: grid;
  gap: 10px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.78);
}

.warranty-steps li { display: flex; gap: 10px; align-items: baseline; }

.warranty-steps i {
  font-style: normal;
  font-variant-numeric: tabular-nums;
  color: var(--orange);
  font-weight: 600;
}

.warranty-card .btn { margin-top: 26px; }

.sup-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

.sup-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  color: var(--accent);
  border: 1px solid var(--accent-100);
  background: var(--paper);
  padding: 9px 16px;
  border-radius: 999px;
  transition: border-color 0.2s, background 0.2s;
}

.sup-link:hover { border-color: var(--accent); background: var(--accent-50); }

/* ---------- 14. 关于我们带 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr 0.85fr;
  gap: 44px;
}

.about-col h3 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-900);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.about-col h3 .icon { color: var(--orange); }

.about-col > p { font-size: 14.5px; color: var(--ink-400); }

.cert-list { display: grid; gap: 12px; }

.cert-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 13.5px;
  transition: border-color 0.2s;
}

.cert-list li:hover { border-color: var(--accent-200); }

.cert-list .icon { width: 20px; height: 20px; color: var(--accent); flex: none; margin-top: 2px; }

.cert-list code {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-400);
  margin-top: 2px;
}

.cert-note {
  margin: 14px 0 0;
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--ink-400);
}

.news-list { display: grid; gap: 14px; }

.news-list a { display: block; }

.news-list b {
  display: block;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--ink-900);
  transition: color 0.2s;
}

.news-list a:hover b { color: var(--accent-600); }

.news-list time { font-size: 12px; color: var(--ink-400); font-variant-numeric: tabular-nums; }

/* ---------- 15. FAQ（紧凑，归属技术支持） ---------- */
.faq-item { border-bottom: 1px solid var(--line); }

.faq-item:first-of-type { border-top: 1px solid var(--line); }

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 4px;
  font-size: 15.5px;
  font-weight: 500;
  transition: color 0.2s;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary:hover { color: var(--accent-600); }

.faq-item summary .icon {
  width: 20px;
  height: 20px;
  color: var(--ink-400);
  transition: transform 0.3s var(--ease), color 0.2s;
  flex: none;
}

.faq-item[open] summary { color: var(--accent-600); }
.faq-item[open] summary .icon { transform: rotate(45deg); color: var(--orange-deep); }

.faq-item p {
  padding: 0 4px 20px;
  color: var(--ink-400);
  font-size: 14.5px;
  max-width: 42em;
  animation: faqIn 0.35s var(--ease);
}

@keyframes faqIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 16. 底部强转化区 ---------- */
.cta-final {
  background:
    radial-gradient(560px 320px at 18% 10%, rgba(32, 90, 47, 0.35), transparent 65%),
    linear-gradient(160deg, var(--ink-800), var(--ink-950));
  color: #fff;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.cta-grid h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 600; line-height: 1.3; }

.cta-list { margin-top: 30px; display: grid; gap: 15px; }

.cta-list li { display: flex; gap: 12px; font-size: 15px; color: rgba(255, 255, 255, 0.82); }

.cta-list .icon { color: var(--orange); margin-top: 4px; }

.cta-phone {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 36px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-phone .icon { width: 26px; height: 26px; color: var(--orange); }

.cta-phone b { font-size: 28px; font-weight: 600; letter-spacing: 0.02em; }

.cta-phone span { font-size: 12.5px; color: var(--on-dark-soft); }

.quote-form {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 34px;
  backdrop-filter: blur(6px);
}

.quote-form h3 { font-size: 17px; font-weight: 600; margin-bottom: 4px; }

.quote-form > p { font-size: 12.5px; color: var(--on-dark-soft); margin-bottom: 22px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.field { margin-bottom: 12px; }

.field label {
  display: block;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 7px;
}

.field label i { font-style: normal; color: var(--orange); margin-left: 2px; }

.field input,
.field select,
.field textarea {
  width: 100%;
  height: 48px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 10px;
  color: #fff;
  padding: 0 15px;
  font: inherit;
  font-size: 14.5px;
  transition: border-color 0.2s, background 0.2s;
}

.field textarea { height: 88px; padding: 12px 15px; resize: vertical; }

.field input::placeholder,
.field textarea::placeholder { color: var(--on-dark-soft); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--orange);
  background: rgba(255, 255, 255, 0.09);
}

.field select option { color: var(--ink-900); }

.quote-form .btn { width: 100%; margin-top: 6px; }

.form-note { font-size: 11.5px; color: var(--on-dark-soft); text-align: center; margin-top: 12px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translate(-50%, 20px);
  background: var(--ink-950);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-left: 3px solid var(--orange);
  border-radius: 10px;
  padding: 14px 22px;
  font-size: 14px;
  box-shadow: var(--shadow-3);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
  z-index: 110; /* 高于 geo-bar(90)，低于 geo-modal(120) */
}

.toast.show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }

/* ---------- 17. Footer ---------- */
.footer { background: var(--ink-950); color: rgba(255, 255, 255, 0.6); font-size: 13.5px; }

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 60px 0 46px;
}

/* LOGO 原图放在白色标牌上，保证暗底不改动 logo 本身（cover 裁掉源文件白边） */
.footer-logo-chip {
  display: inline-block;
  background: #fff;
  border-radius: 10px;
  padding: 8px;
}

.footer-logo-chip .logo-img {
  width: 92px;
  height: 92px;
  object-fit: contain;
  object-position: center 49%;
}

.footer-about { margin-top: 20px; line-height: 1.8; max-width: 30em; }

.footer h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.footer-col li { margin-bottom: 11px; }

.footer-col a { color: rgba(255, 255, 255, 0.55); transition: color 0.2s; }

.footer-col a:hover { color: var(--orange); }

.footer-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--on-dark-soft);
}

.footer-bar a { color: var(--on-dark-soft); }
.footer-bar a:hover { color: var(--orange); }

/* 页脚官方渠道区块（与 sameAs 实体互证互衬） */
.footer-channels {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  padding: 18px 0 4px;
  margin-top: 4px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-channels .fc-label {
  font-weight: 600;
  font-size: 13px;
  color: var(--orange);
  margin-right: 4px;
  letter-spacing: .5px;
}
.footer-channels .fc-link {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  padding: 7px 13px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  transition: color .2s, background-color .2s, border-color .2s;
}
.footer-channels .fc-link:hover,
.footer-channels .fc-link:focus-visible {
  color: #0e2416;
  background: var(--orange);
  border-color: var(--orange);
  outline: none;
}

/* ---------- 18. 滚动渐入动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--d, 0s);
}

.reveal.in { opacity: 1; transform: none; }

/* ==========================================================================
   19. 响应式系统：320 → 3840 宽、任意比例（含超宽屏、横屏手机、平板竖屏）
   策略：容器分档放大 + 断点收敛列数 + clamp() 流式字号 + 全局禁止横向溢出
   ========================================================================== */

/* ---------- 19.1 大屏 / 超宽屏：容器随屏幕放大，避免内容挤成窄条 ---------- */
@media (min-width: 1441px) {
  :root { --maxw: 1320px; }
}

@media (min-width: 1680px) {
  :root { --maxw: 1440px; --gutter: 36px; }
  body { font-size: 16.5px; }
  .section { padding: 96px 0; }
  .sec-head { max-width: 760px; }
  .sec-head h2 { font-size: clamp(36px, 2.3vw, 46px); }
  .hero h1 { font-size: clamp(58px, 4vw, 78px); }
  .hero-sub { font-size: 19px; }
  .trust-num { font-size: 46px; }
  /* 宽屏一轮显示 4 张，卡片不会拉得过宽 */
  #products .car-track > *,
  #solutions .car-track > *,
  #cases .car-track > * { flex-basis: calc((100% - 54px) / 4); }
}

@media (min-width: 1920px) {
  :root { --maxw: 1560px; }
}

@media (min-width: 2400px) {
  :root { --maxw: 1680px; }
  body { font-size: 17px; }
  .hero { min-height: min(80vh, 900px); }
  @supports (min-height: 100dvh) { .hero { min-height: min(80dvh, 900px); } }
  .section { padding: 108px 0; }
}

/* ---------- 19.2 小笔记本 / 平板横屏 ---------- */
@media (max-width: 1280px) {
  .nav-link { padding: 0 13px; font-size: 14.5px; }
  .nav-link::after { left: 13px; right: 13px; }
}

@media (max-width: 1080px) {
  .car-track > * { flex-basis: calc((100% - 18px) / 2); }
  .local-grid { grid-template-columns: 1fr; gap: 40px; }
  .cta-grid { grid-template-columns: 1fr; gap: 44px; }
  .sup-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .section { padding: 72px 0; }
  .map-panel { aspect-ratio: 4 / 3.1; }
}

/* ---------- 19.3 平板竖屏 / 手机：导航收进汉堡菜单 ---------- */
@media (max-width: 900px) {
  .nav-list {
    position: fixed;
    inset: calc(var(--header-h)) 0 auto 0;
    max-height: 0;
    overflow: hidden;
    flex-direction: column;
    align-items: stretch;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-2);
    transition: max-height 0.4s var(--ease);
    z-index: 55;
  }
  .nav-open .nav-list { max-height: calc(100vh - var(--header-h)); overflow-y: auto; }
  @supports (height: 100dvh) {
    .nav-open .nav-list { max-height: calc(100dvh - var(--header-h)); }
  }
  .nav-link { height: 54px; justify-content: space-between; border-bottom: 1px solid var(--paper-3); padding: 0 24px; font-size: 15px; }
  .nav-link::after { display: none; }
  .drop {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 0;
    border-radius: 0;
    padding: 0 0 8px 20px;
    display: none;
  }
  .has-drop.open .drop { display: block; }
  .has-drop:hover .drop { display: none; }
  .has-drop.open:hover .drop { display: block; }
  .burger { display: block; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); border-top: 1px solid rgba(255, 255, 255, 0.08); }
  .trust-item { border-left: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.08); padding: 26px 10px; }
  /* 2×3 对称宫格：偶数列补竖分隔线，最后一行去横线 */
  .trust-item:nth-child(even) { border-left: 1px solid rgba(255, 255, 255, 0.08); }
  .trust-item:nth-last-child(-n + 2) { border-bottom: 0; }
  .spec-strip { grid-template-columns: repeat(2, 1fr); row-gap: 24px; }
  .spec-cell { padding: 0 18px; }
  .spec-cell:nth-child(odd) { border-left: 0; padding-left: 0; }
  .spec-cell b { font-size: 17px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 36px; }
  .sec-row { flex-direction: column; align-items: flex-start; gap: 18px; }
  .sec-head { max-width: 100%; }
  /* iOS 输入框字号 <16px 会触发聚焦缩放 */
  .field input, .field select, .field textarea { font-size: 16px; }
}

/* ---------- 19.4 手机横屏 / 矮屏（高度不足时压缩首屏，保证一屏可读） ---------- */
@media (max-height: 560px) and (min-width: 641px) {
  .hero { min-height: auto; }
  .hero .wrap { padding-top: 44px; padding-bottom: 48px; }
  .hero h1 { font-size: clamp(28px, 4.4vw, 42px); }
  .hero-eyebrow { margin-bottom: 12px; }
  .hero-sub { margin-top: 12px; font-size: 14.5px; }
  .hero-cta { margin-top: 20px; }
  .scroll-hint { display: none; }
  .section { padding: 48px 0; }
  .bub { --t: 22s; }
}

/* ---------- 19.5 手机 ---------- */
@media (max-width: 640px) {
  :root { --gutter: 20px; }
  .topbar-in { height: 68px; }
  .logo-crop { width: 116px; height: 34px; }
  .top-contact { gap: 8px; }
  .top-contact .icon { width: 18px; height: 18px; }
  .top-contact b { font-size: 18px; white-space: nowrap; }
  .section { padding: 56px 0; }
  .hero { min-height: 78vh; }
  @supports (min-height: 100dvh) { .hero { min-height: 78dvh; } }
  .hero .wrap { padding-top: 64px; padding-bottom: 84px; }
  .hero-cta { gap: 12px; margin-top: 30px; }
  .hero-cta .btn { width: 100%; min-width: 0; }
  .scroll-hint { display: none; }
  .car-track > * { flex-basis: 86%; }
  .form-row { grid-template-columns: 1fr; }
  .quote-form { padding: 24px 18px; }
  /* 页脚两排布局：品牌块占满整行，3 组链接两两并排，缩短页脚高度 */
  .footer-main { grid-template-columns: 1fr 1fr; gap: 26px 22px; padding: 44px 0 32px; }
  .footer-main > div:first-child { grid-column: 1 / -1; }
  /* 「支持与关于」占满一整排，链接横向流动排布 */
  .footer-main .footer-col:last-child { grid-column: 1 / -1; }
  .footer-main .footer-col:last-child ul { display: flex; flex-wrap: wrap; gap: 7px 20px; }
  .footer-main .footer-col:last-child li { margin-bottom: 0; }
  .footer h4 { margin-bottom: 12px; }
  .footer-col li { margin-bottom: 8px; }
  .footer-logo-chip .logo-img { width: 78px; height: 78px; }
  .map-panel { aspect-ratio: 1 / 1.02; }
  .cta-phone b { font-size: 22px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .warranty-card { padding: 28px 22px; }
  .local-actions { gap: 10px; }
  .local-actions .btn { min-width: 0; flex: 1 1 140px; }
  .loc-now { font-size: 13.5px; padding: 10px 14px; }
  .cta-list li { font-size: 14.5px; }
}

/* ---------- 19.6 小屏手机（iPhone SE / 安卓 360） ---------- */
@media (max-width: 480px) {
  :root { --gutter: 18px; }
  .topbar-in { height: 64px; }
  .logo-crop { width: 104px; height: 31px; }
  .top-contact b { font-size: 16px; }
  .btn { height: 48px; padding: 0 22px; font-size: 15px; }
  .section { padding: 48px 0; }
  .trust-item { padding: 22px 8px; }
  .trust-num { font-size: 28px; }
  .trust-label { font-size: 12px; }
  .car-track > * { flex-basis: 90%; }
  .car-btn { width: 40px; height: 40px; }
  .prod-card, .sol-card { padding: 24px 20px; }
  .sec-head h2 { font-size: 24px; }
  .local-copy h2 { font-size: 24px; }
  .case-body { padding: 16px 18px 18px; }
  .footer-bar { flex-direction: column; align-items: flex-start; gap: 8px; }
  .faq-item summary { font-size: 14.5px; padding: 16px 2px; }
  .faq-item p { font-size: 14px; }
  .toast { left: 16px; right: 16px; transform: translateY(20px); max-width: none; }
  .toast.show { transform: none; }
}

/* ---------- 19.7 超小屏（320 宽，老机型） ---------- */
@media (max-width: 380px) {
  :root { --gutter: 16px; }
  .logo-crop { width: 92px; height: 28px; }
  .top-contact b { font-size: 15px; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 14px; }
  .btn { padding: 0 16px; font-size: 14.5px; }
  .hero-cta .btn { min-width: 0; }
  .trust-num { font-size: 25px; }
  .sec-head h2, .local-copy h2 { font-size: 22px; }
  .footer-main { padding: 36px 0 26px; }
  .quote-form { padding: 20px 14px; }
  .city-chip { padding: 9px 15px; font-size: 13.5px; }
}

/* 静态渲染模式（截图/校验用）：禁用全部过渡与动画 */
html.noanim *,
html.noanim *::before,
html.noanim *::after {
  animation: none !important;
  transition: none !important;
}

/* ---------- 20. 无障碍：减少动效 ---------- */
@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;
  }
  .reveal { opacity: 1; transform: none; }
  .bub { display: none; }
}

/* ==========================================================================
   21. GEO 内容层：技术知识库 / AI 问答中心（/ai/、/en/ai/）
   目标：让 AI 检索器可整段摘取——问句标题、结论先行、自包含段落、
        语义表格（table 而非 div 卡片）、术语表、可见更新时间。
   结构可抽取性优先于视觉统一：表格一律保留 table 标签，仅做美化。
   ========================================================================== */

/* ---------- 21.1 面包屑导航条 ---------- */
.crumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13.5px;
  color: var(--ink-400);
}

.crumb li { display: flex; align-items: center; gap: 10px; }

.crumb li + li::before {
  content: "/";
  color: var(--ink-200);
}

.crumb a { color: var(--ink-400); transition: color 0.2s; }
.crumb a:hover { color: var(--accent); }
.crumb [aria-current="page"] { color: var(--ink-900); font-weight: 600; }

/* ---------- 21.2 首屏（结论先行） ---------- */
.kb-hero {
  background:
    radial-gradient(90% 120% at 88% -10%, rgba(232, 119, 34, 0.14) 0%, transparent 55%),
    linear-gradient(160deg, var(--ink-900) 0%, var(--ink-950) 100%);
  color: #fff;
  padding: clamp(44px, 5.4vw, 78px) 0 clamp(36px, 4.4vw, 58px);
}

.kb-hero .kicker { color: var(--on-dark-soft); }
.kb-hero .kicker::before { background: #f08a3c; }

.kb-hero h1 {
  color: #fff;
  font-size: clamp(25px, 3.9vw, 44px);
  line-height: 1.26;
  letter-spacing: -0.015em;
  margin: 12px 0 18px;
  font-weight: 700;
}

.kb-lead {
  max-width: 880px;
  font-size: clamp(14.5px, 1.35vw, 16.5px);
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.74);
}

.kb-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 22px;
}

.kb-meta span {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 5px 12px;
  border-radius: 999px;
  line-height: 1.5;
}

.kb-meta time { color: #fff; }

.kb-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* TLDR 结论块：AI 与扫读者都能直接拿走的一段 */
.tldr {
  margin-top: 32px;
  max-width: 900px;
  padding: 18px 22px;
  border-left: 3px solid #f08a3c;
  background: rgba(255, 255, 255, 0.055);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.tldr b {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #f08a3c;
  margin-bottom: 8px;
  font-weight: 600;
}

.tldr p {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88);
}

/* ---------- 21.3 双栏布局 + 侧栏目录 ---------- */
.kb-layout {
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr);
  gap: clamp(26px, 4vw, 62px);
  padding: clamp(34px, 4.4vw, 64px) 0 84px;
}

.kb-toc {
  position: sticky;
  top: calc(var(--header-h) + 22px);
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.kb-toc b {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--ink-400);
  margin-bottom: 10px;
  font-weight: 600;
}

.kb-toc a {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-400);
  padding: 6px 0;
  transition: color 0.2s;
}

.kb-toc a:hover { color: var(--accent); }

/* ---------- 21.4 章节与标题 ---------- */
.kb-sec {
  padding-bottom: 42px;
  margin-bottom: 42px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.kb-sec:last-of-type { border-bottom: 0; }

.kb-sec > h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: clamp(19px, 2.2vw, 27px);
  line-height: 1.45;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  color: var(--ink-900);
}

.kb-sec > h2 i {
  flex: none;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--orange-deep);
}

.kb-sub {
  max-width: 800px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-400);
  margin-bottom: 22px;
}

/* ---------- 21.5 实体卡（dl 语义表） ---------- */
.entity-dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.entity-dl > div { background: var(--paper); padding: 16px 18px; }

.entity-dl dt {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--ink-400);
  margin-bottom: 7px;
}

.entity-dl dd {
  font-size: 14.2px;
  line-height: 1.75;
  color: var(--ink-900);
}

.entity-dl a { color: var(--accent); border-bottom: 1px solid var(--accent-100); }

/* ---------- 21.6 关键事实列表 ---------- */
.fact-list {
  counter-reset: f;
  display: grid;
  gap: 10px;
}

.fact-list li {
  position: relative;
  counter-increment: f;
  padding: 14px 18px 14px 48px;
  background: var(--paper-2);
  border-radius: var(--radius-sm);
  font-size: 14.2px;
  line-height: 1.8;
  color: var(--ink-400);
}

.fact-list li::before {
  content: counter(f, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange-deep);
}

.fact-list li b { color: var(--ink-900); }

/* ---------- 21.7 问答块（AI 摘取的核心单元） ---------- */
.qa {
  padding: 18px 0 2px;
  border-top: 1px dashed var(--line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.qa h3 {
  font-size: clamp(16px, 1.6vw, 18.5px);
  line-height: 1.6;
  color: var(--ink-900);
  margin-bottom: 10px;
  font-weight: 650;
}

.qa h3::before {
  content: "Q";
  font-family: var(--font-mono);
  font-size: 0.78em;
  color: var(--accent);
  margin-right: 8px;
  letter-spacing: 0.06em;
}

.qa p {
  max-width: 880px;
  font-size: 14.2px;
  line-height: 1.9;
  color: var(--ink-400);
  margin-bottom: 10px;
}

/* 结论句：与 JSON-LD acceptedAnswer 文本一致 */
.qa p.qa-lead {
  padding-left: 14px;
  border-left: 2px solid var(--accent-200);
  color: var(--ink-900);
  font-size: 15px;
}

.qa p.qa-src {
  font-family: var(--font-mono);
  font-size: 12.2px;
  color: var(--ink-400);
}

/* ---------- 21.8 对比表（保留 table 语义，仅美化） ---------- */
.table-block { margin-bottom: 28px; }

.table-block > h3 {
  font-size: 14.5px;
  color: var(--ink-900);
  margin-bottom: 12px;
  font-weight: 650;
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.spec-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 13.2px;
}

.spec-table caption {
  caption-side: top;
  text-align: left;
  padding: 13px 16px;
  font-size: 12.2px;
  line-height: 1.6;
  color: var(--ink-400);
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
}

.spec-table th,
.spec-table td {
  text-align: left;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.7;
}

.spec-table thead th {
  background: var(--accent-50);
  color: var(--ink-900);
  font-size: 12.2px;
  font-weight: 600;
  white-space: nowrap;
}

.spec-table tbody th {
  background: var(--paper-2);
  color: var(--ink-900);
  font-weight: 600;
  white-space: nowrap;
}

.spec-table td { color: var(--ink-400); }

.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td { border-bottom: 0; }

/* ---------- 21.9 术语表 ---------- */
.glossary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 34px;
}

.glossary > div {
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.glossary dt {
  font-size: 14.2px;
  font-weight: 650;
  color: var(--ink-900);
  margin-bottom: 5px;
}

.glossary dd {
  font-size: 13.6px;
  line-height: 1.78;
  color: var(--ink-400);
}

/* ---------- 21.10 作业步骤与引用规范 ---------- */
.step-list,
.rule-list {
  counter-reset: s;
  display: grid;
  gap: 0;
}

.step-list li,
.rule-list li {
  position: relative;
  counter-increment: s;
  padding: 15px 0 15px 52px;
  border-top: 1px solid var(--line);
  font-size: 14.2px;
  line-height: 1.82;
  color: var(--ink-400);
}

.step-list li b,
.rule-list li b {
  display: block;
  color: var(--ink-900);
  font-size: 15px;
  margin-bottom: 4px;
}

.step-list li::before,
.rule-list li::before {
  content: counter(s, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent-200);
}

.rule-list li::before { color: var(--orange-deep); }

/* ---------- 21.11 页脚注 ---------- */
.kb-foot {
  padding: 18px 22px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-400);
}

.kb-foot p + p { margin-top: 8px; }
.kb-foot b { color: var(--ink-900); }
.kb-foot a { color: var(--accent); border-bottom: 1px solid var(--accent-100); }

.kb-foot code {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 1px 5px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper);
}

/* ---------- 21.12 响应式 ---------- */
@media (max-width: 1000px) {
  .kb-layout { grid-template-columns: 1fr; gap: 0; }
  .kb-toc {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 0 24px;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }
  .kb-toc b { width: 100%; margin-bottom: 2px; }
  .kb-toc a {
    padding: 7px 12px;
    background: var(--paper-2);
    border-radius: 999px;
    font-size: 12.5px;
  }
}

@media (max-width: 760px) {
  .entity-dl { grid-template-columns: 1fr; }
  .glossary { grid-template-columns: 1fr; gap: 0; }
  .kb-sec { padding-bottom: 32px; margin-bottom: 32px; }
  .qa h3::before { margin-right: 6px; }
  .qa p.qa-lead { padding-left: 12px; }
  .kb-meta span { font-size: 12px; padding: 4px 10px; }
  .tldr { padding: 15px 17px; }
  .fact-list li { padding: 13px 15px 13px 44px; }
  .step-list li, .rule-list li { padding-left: 44px; }
}

@media (max-width: 420px) {
  .kb-hero h1 { font-size: 23px; }
  .kb-lead { font-size: 14px; }
  .kb-actions .btn { width: 100%; justify-content: center; }
  .spec-table { min-width: 560px; font-size: 12.6px; }
}

/* ---------- 21.13 页脚内容戳（新鲜度信号，AI 可读取） ---------- */
.footer-stamp {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--on-dark-soft);
}

.footer-stamp time { color: var(--on-dark-soft); }
.footer-stamp a { color: rgba(255, 255, 255, 0.55); border-bottom: 1px solid rgba(255, 255, 255, 0.18); }
.footer-stamp a:hover { color: #f08a3c; border-color: #f08a3c; }

/* ==========================================================================
   25. v7：整体调淡 + 全站数据动效
   色调已在令牌层调淡一档（深空绿/雾绿/纸面同步提亮）；
   此处补非数字数据的弹入动画：数字走 JS 计数，非数字走 data-pop。
   ========================================================================== */
[data-pop] { display: inline-block; }

[data-pop].is-pop { animation: dvPop 0.65s var(--ease) both; }

@keyframes dvPop {
  0% { opacity: 0; transform: translateY(10px) scale(0.86); }
  62% { opacity: 1; transform: translateY(-2px) scale(1.05); }
  100% { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  [data-pop].is-pop { animation: none; }
}

/* 计数 span 保持内联，抵消 .spec-cell span / .case-visual span 的块级化 */
span.num { display: inline; }

/* =====================================================================
   §26 v8：计数 span 样式隔离（修复数据动效导致视觉退化）
   ---------------------------------------------------------------------
   问题：.case-visual span / .spec-cell span 是后代选择器，会把包在 <b>
         里的 <span class="num"> 一并命中，导致数字掉到 13px / 12.5px 灰字，
         案例卡数值标签、参数带 "5000K / 100MPa / 800W / 1KW / 6bar"
         全部失去大字号与橙色高亮（＝退回到被缩小的文案，视觉崩塌）。
   方案：用更高特异性的子代规则把 .num 恢复为"完全继承父级 b"的字号与颜色，
         只保留计数器本身的文字变化，不让任何布局/配色属性被子孙选择器污染。
   ===================================================================== */
.case-visual b > .num,
.spec-cell b > .num,
.trust-num .num {
  display: inline;
  font-size: inherit;
  font-weight: inherit;
  font-variant-numeric: inherit;
  color: inherit;
  line-height: inherit;
  letter-spacing: inherit;
  margin: 0;
}

/* 窄屏收光：宽屏那套大半径光晕在手机上会把顶部整条压亮，单独降到柔和档 */
@media (max-width: 760px) {
  .hero {
    background:
      /* 阳光本体（窄屏缩小半径、整体减档，同样单方向由明到暗） */
      radial-gradient(
        880px 740px at 106% -16%,
        rgba(198, 240, 198, 0.26) 0%,
        rgba(182, 232, 182, 0.19) 14%,
        rgba(164, 222, 166, 0.12) 32%,
        rgba(146, 206, 152, 0.06) 52%,
        rgba(122, 180, 132, 0) 78%
      ),
      radial-gradient(420px 340px at -2% -8%, rgba(36, 100, 54, 0.18), transparent 78%),
      linear-gradient(160deg, var(--ink-900) 0%, var(--ink-950) 72%);
  }
}

/* =====================================================================
   §27 v9：数据层级统一 —— 数字橙色 / 单位弱化 / 字号分层
   ---------------------------------------------------------------------
   规则：<span class="num"> 只包数字（含正负号），<i class="unit"> 包单位与
         中文前缀（K/MPa/W/kW/bar/%/μm/年/h/万+/+/约/额定/峰值/≤…）。
         用 <i> 而不是 <span>，是为了彻底避开 .case-visual span /
         .spec-cell span 这类后代选择器的误伤。
   ===================================================================== */
.unit {
  font-style: normal;
  font-size: 0.55em;
  font-weight: 500;
  letter-spacing: 0;
  color: inherit;
  opacity: 0.82;
  margin: 0 0.1em;
  font-variant-numeric: normal;
}

/* 深底区块：VI 深底提亮档 #F08A3C */
.trust-num .num { color: #f08a3c; }
.trust-num .unit { font-size: 0.46em; color: rgba(255, 255, 255, 0.7); margin-left: 2px; }

.case-visual b .num { color: #f08a3c; }
.case-visual b .unit { font-size: 0.44em; color: rgba(255, 255, 255, 0.72); margin-left: 1px; }

.prod-specs b { font-size: 16px; }
.prod-specs b .num { color: #f08a3c; }
.prod-specs b .unit { font-size: 0.72em; color: rgba(255, 255, 255, 0.78); }

/* 浅底区块：标准工程橙（24px 粗体已满足大字对比度要求） */
.spec-cell b .num { color: #e87722; }
.spec-cell b .unit { font-size: 0.58em; color: var(--ink-400); font-weight: 500; }

/* =====================================================================
   §28 v16：首屏阳光光效（自然单方向渐变版）
   ---------------------------------------------------------------------
   光效本体已并入 §5 的 .hero background：单一光源置于右上角画面外
   （106% -16%），光弧以光源为圆心逐级单调衰减——画面内只有
   「朝左下由明到暗」一个方向，无光带、无分束、无局部光斑。
   色值统一走雾绿 #D8EBD4 系（不用暖白），避免和深空绿混出灰脏感。
   ===================================================================== */
/* SCROLL 指示线换工程橙（深底提亮档） */
.scroll-hint::after {
  background: linear-gradient(180deg, rgba(240, 138, 60, 0.95), rgba(240, 138, 60, 0));
}

@media (prefers-reduced-motion: reduce) {
  .hero::before,
  .hero::after { filter: blur(30px); }
}

/* =====================================================================
   §29 地图：省会全覆盖标注 / 首都红星 / 定位城市动效
   ---------------------------------------------------------------------
   层级：底图(land) < 省会白点 < 服务城市橙点 < 定位城市(三环波纹+虚线轨道)
         首都独立一层，红色五角星，不走点位样式。
   ===================================================================== */

/* ---------- 点位 ---------- */
.mcity .core {
  fill: rgba(255, 255, 255, 0.72);
  transition: fill 0.3s;
}

.mcity.is-svc .core { fill: var(--orange); }

/* 光环：默认全隐藏，只有服务城市/定位城市才唤醒 */
.mcity .halo {
  fill: none;
  stroke: rgba(240, 138, 60, 0.9);
  stroke-width: 1.1;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  pointer-events: none;
}

/* 靶心环：定位城市专属的静态外环，与扩散环构成「靶心 + 波纹」两层 */
.mcity .ring {
  fill: none;
  stroke: rgba(240, 138, 60, 0.6);
  stroke-width: 0.9;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  pointer-events: none;
}

/* 呼吸光斑：叠在中心点上做明暗呼吸 */
.mcity .beat {
  fill: #ffb37a;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  pointer-events: none;
}

/* 服务城市：静态橙点，无动效（动效只归定位城市） */

/* 次要点位（与定位城市过近，如苏州）：只留小点，不出环，避免糊成一团 */
.mcity.is-minor .halo,
.mcity.is-minor .ring,
.mcity.is-minor .beat { display: none; }
.mcity.is-minor .core { fill: rgba(240, 138, 60, 0.75); }

/* 定位城市：三环错时扩散 + 轨道旋转 + 中心呼吸 */
.mcity.loc-here .halo {
  animation: mapRipple 2.6s cubic-bezier(0.22, 0.61, 0.36, 1) infinite;
}
.mcity.loc-here .ring { opacity: 1; }
.mcity.loc-here .beat { animation: mapBeat 2.6s ease-in-out infinite; }
.mcity.loc-here .core { fill: #f08a3c; }

/* ---------- 首都：红色五角星 ---------- */
.mcity .cap-glow { fill: rgba(224, 57, 44, 0.34); filter: blur(2.6px); }
.mcity .cap-star {
  fill: #e0392c;
  stroke: rgba(255, 233, 228, 0.75);
  stroke-width: 0.5;
  stroke-linejoin: round;
}
.mcity.is-capital text { fill: rgba(255, 255, 255, 0.97); font-weight: 400; font-size: 10.5px; }

/* ---------- 标签（思源黑体细字重，越细越显精致） ---------- */
.mcity text {
  font-family: "Source Han Sans SC", "Source Han Sans", "Noto Sans SC",
    "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei Light", "Microsoft YaHei",
    "Helvetica Neue", Arial, sans-serif;
  font-size: 10px;
  font-weight: 350;
  letter-spacing: 0;
  fill: rgba(255, 255, 255, 0.74);
  paint-order: stroke;
  stroke: rgba(9, 24, 15, 0.92);
  stroke-width: 3;
  stroke-linejoin: round;
  transition: fill 0.3s;
}

.mcity.is-svc text { fill: rgba(255, 255, 255, 0.95); font-weight: 400; }
.mcity.loc-here text { fill: #f08a3c; font-weight: 500; }

/* 密集区微调：长三角四城标签错位，避免互相压字 */
.mcity[data-city="上海"] text { font-size: 11px; }
.mcity[data-city="苏州"] text,
.mcity[data-city="南京"] text,
.mcity[data-city="杭州"] text { font-size: 9.5px; }

/* ---------- 关键帧 ---------- */
@keyframes mapRipple {
  0%   { transform: scale(0.6); opacity: 0.95; }
  72%  { transform: scale(2.35); opacity: 0; }
  100% { transform: scale(2.35); opacity: 0; }
}

@keyframes mapSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes mapBeat {
  0%, 100% { opacity: 0.12; }
  50%      { opacity: 0.7; }
}

/* 移动端：地图整体缩小后标签更容易糊，字号回调一档、描边加厚 */
@media (max-width: 760px) {
  .mcity text { font-size: 10.5px; stroke-width: 3.2; }
  .mcity[data-city="上海"] text { font-size: 11.5px; }
  .mcity[data-city="苏州"] text,
  .mcity[data-city="南京"] text,
  .mcity[data-city="杭州"] text { font-size: 10px; }
}

/* 静态模式：?noanim 与系统「减少动态效果」时保留光圈，只停动画 */
html.noanim .mcity.loc-here .halo { animation: none; opacity: 0.45; transform: scale(1.5); }
html.noanim .mcity.loc-here .beat { animation: none; opacity: 0.35; }

@media (prefers-reduced-motion: reduce) {
  .mcity .halo,
  .mcity .beat { animation: none !important; }
  .mcity.loc-here .halo { opacity: 0.55; transform: scale(1.5); }
  .mcity.loc-here .beat { opacity: 0.3; }
}

/* =====================================================================
   §30 全站微信客服：右下角浮动球 + 点击弹出二维码弹窗
   ---------------------------------------------------------------------
   挂载于每个页面（index / ai / en），JS 在 main.js 末尾做开关逻辑。
   弹窗内二维码为 SVG 示意占位，上线前替换为企业微信/公众号正式二维码。
   ===================================================================== */
.wx-fab {
  position: fixed;
  right: 18px;
  bottom: 22px;
  z-index: 90;
  width: 54px;
  height: 54px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(145deg, #2bc463, #07a04a);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(7, 160, 74, 0.42), 0 2px 6px rgba(0, 0, 0, 0.18);
  transition: transform 0.25s, box-shadow 0.25s;
}
.wx-fab:hover { transform: translateY(-3px); box-shadow: 0 10px 26px rgba(7, 160, 74, 0.5), 0 2px 6px rgba(0, 0, 0, 0.2); }
.wx-fab svg { width: 30px; height: 30px; }
.wx-fab-label {
  position: absolute;
  right: 62px;
  bottom: 14px;
  white-space: nowrap;
  font-size: 12px;
  color: #fff;
  background: rgba(9, 24, 15, 0.88);
  padding: 5px 10px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transform: translateX(4px);
  transition: opacity 0.25s, transform 0.25s;
}
.wx-fab:hover .wx-fab-label, .wx-fab:focus-visible .wx-fab-label { opacity: 1; transform: translateX(0); }

.wx-modal {
  position: fixed;
  inset: 0;
  z-index: 95;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(6, 20, 12, 0.64);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}
.wx-modal.open { display: flex; }
.wx-card {
  position: relative;
  width: min(320px, 100%);
  background: #fff;
  border-radius: 18px;
  padding: 26px 26px 20px;
  text-align: center;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.32);
  animation: wxPop 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
}
@keyframes wxPop { from { transform: translateY(14px) scale(0.96); opacity: 0; } to { transform: none; opacity: 1; } }
.wx-close {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: #f0f3f1;
  color: #4a5b50;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}
.wx-close:hover { background: #e4eae6; }
.wx-card .wx-logo { width: 112px; height: auto; margin: 2px auto 10px; display: block; }
.wx-card h3 { font-size: 17px; color: #12331b; margin: 0 0 4px; }
.wx-card .wx-sub { font-size: 13px; color: #6b7d71; margin: 0 0 12px; }
.wx-qr { width: 196px; height: 196px; margin: 0 auto 12px; display: block; border: 1px solid #e4eae6; border-radius: 10px; }
.wx-card .wx-line { font-size: 13.5px; color: #33463b; margin: 0 0 2px; }
.wx-card .wx-line b { color: #205a2f; }
.wx-note { font-size: 11px; color: #9aa89f; margin: 8px 0 0; }
@media (max-width: 760px) {
  .wx-fab { right: 14px; bottom: 18px; width: 50px; height: 50px; }
  .wx-fab svg { width: 27px; height: 27px; }
}

/* =====================================================================
   §32 子页面公共版式（page-hero / 卡片 / 步骤 / 表格 / FAQ / CTA 条 / 表单）
   ===================================================================== */
.page-hero {
  position: relative;
  background: linear-gradient(160deg, #12331b 0%, #0e2a18 58%, #0b2415 100%);
  padding: 60px 0 54px;
  color: #fff;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(720px 420px at 88% -18%, rgba(58, 146, 82, 0.4), transparent 72%);
  pointer-events: none;
}
.page-hero .wrap { position: relative; z-index: 1; }
.crumbs { font-size: 12px; color: var(--on-dark-soft); margin-bottom: 20px; }
.crumbs a { color: rgba(255, 255, 255, 0.75); text-decoration: none; }
.crumbs a:hover { color: #f08a3c; }
.crumbs i { font-style: normal; margin: 0 6px; opacity: 0.5; }
.page-hero h1 { font-size: clamp(28px, 4.4vw, 42px); line-height: 1.18; font-weight: 700; margin: 0 0 14px; letter-spacing: 0.01em; }
.page-hero .lead { max-width: 760px; color: rgba(255, 255, 255, 0.78); font-size: 16px; line-height: 1.85; margin: 0; }
.page-hero em, .prose em, .g-card em { font-style: normal; color: #f08a3c; }

.g-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.g-card {
  display: flex; flex-direction: column; gap: 10px;
  background: #fff; border: 1px solid #e2eae4; border-radius: 14px;
  padding: 22px 20px 18px; text-decoration: none; color: inherit;
  transition: transform 0.28s, box-shadow 0.28s, border-color 0.28s;
}
.section-dark .g-card { background: rgba(255, 255, 255, 0.05); border-color: rgba(255, 255, 255, 0.13); color: #fff; }
.g-card:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(18, 51, 27, 0.12); border-color: #c9d8cd; }
.g-icon {
  width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: #eaf1eb; color: #205a2f;
}
.g-icon .icon { width: 24px; height: 24px; }
.g-card h3 { margin: 2px 0 0; font-size: 17px; color: #12331b; }
.section-dark .g-card h3 { color: #fff; }
.g-card p { margin: 0; font-size: 14px; line-height: 1.75; color: #52655a; }
.section-dark .g-card p { color: var(--on-dark-soft); }
.g-card .go { margin-top: auto; display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: #205a2f; }
.g-card .go .icon { width: 15px; height: 15px; }

.prose { max-width: 860px; }
.prose p { font-size: 15.5px; line-height: 1.95; color: #33463b; margin: 0 0 14px; }
.prose strong { color: #12331b; }
.prose a { color: #205a2f; font-weight: 600; }

.step-list { list-style: none; margin: 0; padding: 0; max-width: 860px; }
.step-list li { display: flex; gap: 18px; padding: 18px 0; border-bottom: 1px solid #e6ede8; }
.step-list li:last-child { border-bottom: 0; }
.step-no {
  flex: none; width: 42px; height: 42px; border-radius: 12px; background: #12331b; color: #f08a3c;
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px; letter-spacing: 0.04em;
}
.step-list h3 { margin: 0 0 5px; font-size: 16.5px; color: #12331b; }
.step-list p { margin: 0; font-size: 14.5px; line-height: 1.8; color: #52655a; }
/* 深底区块内的作业步骤：标题/说明/分隔线换用深底配色（原浅底深字在深绿底上对比度不足，标题仅约1.2:1） */
.section-dark .step-list li { border-bottom-color: rgba(255, 255, 255, 0.12); }
.section-dark .step-list h3 { color: #fff; }
.section-dark .step-list p { color: var(--on-dark-soft); }

.tbl-wrap { overflow-x: auto; max-width: 920px; }
.tbl { width: 100%; border-collapse: collapse; background: #fff; border-radius: 12px; overflow: hidden; font-size: 14.5px; }
.tbl th { background: #12331b; color: #fff; text-align: left; padding: 12px 16px; font-weight: 600; white-space: nowrap; }
.tbl td { padding: 12px 16px; border-bottom: 1px solid #e6ede8; color: #33463b; line-height: 1.7; }
.tbl tr:last-child td { border-bottom: 0; }

.faq-list { max-width: 860px; }
.faq-item { background: #fff; border: 1px solid #e2eae4; border-radius: 12px; margin-bottom: 12px; overflow: hidden; }
.faq-item summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 16px 18px; font-weight: 600; font-size: 15.5px; color: #12331b;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .icon { flex: none; width: 17px; height: 17px; color: #205a2f; transition: transform 0.25s; }
.faq-item[open] summary .icon { transform: rotate(45deg); }
.faq-a { padding: 0 18px 16px; }
.faq-a p { margin: 0; font-size: 14.5px; line-height: 1.9; color: #52655a; }

.cta-band { background: linear-gradient(150deg, #12331b, #1c4527); color: #fff; padding: 46px 0; }
.cta-band-in { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h2 { margin: 0 0 6px; font-size: 24px; }
.cta-band p { margin: 0; color: rgba(255, 255, 255, 0.68); font-size: 14.5px; }
.cta-band-btns { display: flex; gap: 12px; flex-wrap: wrap; }

.form-card { max-width: 640px; background: #fff; border: 1px solid #e2eae4; border-radius: 16px; padding: 28px; }
.form-card form { display: flex; flex-direction: column; gap: 14px; }
.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13.5px; font-weight: 600; color: #33463b; }
.form-card input, .form-card select, .form-card textarea {
  border: 1px solid #d5e0d8; border-radius: 10px; padding: 11px 13px; font: inherit; font-size: 14.5px; color: #12331b; background: #fbfdfb;
}
.form-card input:focus, .form-card select:focus, .form-card textarea:focus { outline: 2px solid rgba(32, 90, 47, 0.35); border-color: #205a2f; }
.form-card .btn { align-self: flex-start; }
.f-note { margin: 0; font-size: 12px; color: #8a9a90; }
@media (max-width: 640px) { .f-row { grid-template-columns: 1fr; } .cta-band-in { flex-direction: column; align-items: flex-start; } }
.sec-head h2 em, .page-hero .lead em, .cta-band h2 em { font-style: normal; color: #f08a3c; }

/* ---------- 33. 产品展示（宣传册内容区） ---------- */
.prod-show-in { display: grid; grid-template-columns: 340px 1fr; gap: 52px; align-items: center; }
.prod-fig {
  margin: 0; padding: 30px 22px 20px; text-align: center;
  background: linear-gradient(165deg, #f2f7f3, #ffffff 70%);
  border: 1px solid rgba(18, 51, 27, 0.08); border-radius: var(--radius);
  box-shadow: var(--shadow-2);
}
.prod-fig img { width: auto; max-width: 100%; max-height: 420px; margin: 0 auto; filter: drop-shadow(0 18px 28px rgba(10, 26, 16, 0.16)); }
.prod-fig figcaption { margin-top: 16px; font-size: 13.5px; font-weight: 500; color: #51604f; letter-spacing: 0.02em; }
.show-list { list-style: none; margin: 20px 0 0; padding: 0; display: grid; gap: 10px; }
.show-list li { position: relative; padding-left: 30px; font-size: 15.5px; line-height: 1.65; color: #223326; }
.show-list li::before { content: ""; position: absolute; left: 0; top: 5px; width: 19px; height: 19px; border-radius: 50%; background: rgba(32, 90, 47, 0.10); }
.show-list li::after { content: ""; position: absolute; left: 5.5px; top: 10px; width: 8px; height: 4.5px; border-left: 2px solid #205a2f; border-bottom: 2px solid #205a2f; transform: rotate(-45deg); }
.show-note { margin: 20px 0 0; font-size: 13px; color: #6a7a6e; }
.agent-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.agent-card {
  margin: 0; padding: 24px 20px 20px; display: flex; flex-direction: column; align-items: center; gap: 14px;
  background: #fff; border: 1px solid rgba(18, 51, 27, 0.08); border-radius: var(--radius);
  box-shadow: var(--shadow-1); text-align: center; transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.agent-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
.agent-card img { height: 200px; width: auto; object-fit: contain; filter: drop-shadow(0 12px 20px rgba(10, 26, 16, 0.14)); }
.agent-thumb { height: 200px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.agent-thumb img { height: auto; max-height: 100%; max-width: 100%; width: auto; object-fit: contain; filter: drop-shadow(0 12px 20px rgba(10, 26, 16, 0.14)); }
.agent-card figcaption b { display: block; font-size: 16px; color: var(--ink-900); }
.agent-card figcaption span { display: block; margin-top: 5px; font-size: 13.5px; line-height: 1.6; color: #6a7a6e; }
.tbl-note { margin: 10px 0 0; font-size: 12.5px; color: #8a9a90; }
@media (max-width: 900px) {
  .prod-show-in { grid-template-columns: 1fr; gap: 28px; }
  .prod-fig { max-width: 340px; margin: 0 auto; }
  .agent-grid { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; }
}

/* ---------- 20. 2026-11 导航升级：产品两列分组（设备 / 耗材）+ 联系 CTA ---------- */
/* 仅在桌面生效，避免覆盖 900px 以下的汉堡菜单规则 */
@media (min-width: 901px) {
  .nav-link { padding: 0 13px; font-size: 14.5px; }
  .nav-link::after { left: 13px; right: 13px; }
  .drop-mega {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px 14px;
    min-width: 600px;
    left: -90px;
    padding: 14px;
  }
}

.drop-col { display: flex; flex-direction: column; gap: 2px; }

.drop-label {
  margin: 0 0 6px;
  padding: 2px 14px 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-400);
  border-bottom: 1px solid var(--line);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  border-radius: 999px;
  background: var(--orange-deep);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  transition: background 0.2s var(--ease);
}

.nav-cta:hover { background: var(--orange); color: #fff; }

@media (max-width: 900px) {
  .nav-cta { height: 30px; padding: 0 12px; font-size: 12px; }
  .drop-label { padding-left: 0; border-bottom: 0; }
}

/* ---------- 21. 产品总览：按场景选型表 ---------- */
.choose-tbl td:first-child { font-weight: 500; color: var(--ink-900); white-space: nowrap; }
.choose-tbl td:last-child a { color: var(--accent-700); border-bottom: 1px solid var(--accent-200); }
.choose-tbl td:last-child a:hover { border-color: var(--accent-600); }
.sku-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  margin: 3px 4px 3px 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--ink-700);
  background: var(--paper);
  transition: border-color 0.2s, color 0.2s;
}
.sku-chip:hover { border-color: var(--accent-400); color: var(--accent-700); }
.sku-chip b { font-weight: 500; }

/* ---------- 22. 耗材页：4 个 SKU 卡片 + 卡片整体可点 ---------- */
.agent-card > a { display: block; width: 100%; text-align: center; color: inherit; }
.agent-card > a:hover figcaption b { color: var(--accent-700); }
.agent-grid.is-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1080px) { .agent-grid.is-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .agent-grid.is-4 { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; } }

/* ---------- 23. 清洗知识：文章列表 ---------- */
.kb-list { display: grid; }
.kb-item { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.kb-item a { font-size: 15px; color: var(--ink-900); }
.kb-item a:hover { color: var(--accent-700); }
.kb-item time { font-size: 12.5px; color: var(--ink-400); white-space: nowrap; }

/* ---------- 24. 清洗知识：文章正文 ---------- */
.art-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 268px; gap: 56px; align-items: start; }
.art-body { max-width: 760px; font-size: 16px; line-height: 1.95; color: #33463b; }
.art-body > *:first-child { margin-top: 0; }
.art-body h2 {
  font-size: 22px; line-height: 1.4; color: var(--ink-950); margin: 40px 0 14px;
  padding-left: 14px; border-left: 3px solid var(--accent-200); font-weight: 700;
}
.art-body h3 { font-size: 18px; line-height: 1.5; color: var(--ink-900); margin: 30px 0 10px; font-weight: 700; }
.art-body h4 { font-size: 16px; color: var(--ink-900); margin: 22px 0 8px; font-weight: 700; }
.art-body p { margin: 0 0 15px; }
.art-body > div { margin: 0 0 15px; }
.art-body li > p { margin: 0; }

/* ---------- 25. 资质荣誉：证书墙 ---------- */
.cert-strip {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px;
}
.cert-cell {
  display: block; aspect-ratio: 3 / 4; overflow: hidden; border: 1px solid var(--line);
  border-radius: 10px; background: #fff;
}
.cert-cell img { width: 100%; height: 100%; object-fit: contain; transition: transform 0.25s; }
.cert-cell:hover img { transform: scale(1.04); }
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; max-width: 1080px; }
.cert-grid.is-3 { grid-template-columns: repeat(3, 1fr); }
.cert-card {
  margin: 0; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  border-radius: 12px; overflow: hidden; transition: box-shadow 0.25s, transform 0.25s;
}
.cert-card:hover { box-shadow: var(--shadow-2); transform: translateY(-3px); }
.cert-card > a { display: block; aspect-ratio: 3 / 4; background: var(--accent-50); overflow: hidden; }
.cert-card img { width: 100%; height: 100%; object-fit: contain; transition: transform 0.25s; }
.cert-card:hover img { transform: scale(1.03); }
.cert-card figcaption { padding: 12px 14px 14px; display: grid; gap: 3px; }
.cert-card figcaption b { font-size: 14px; color: var(--ink-900); font-weight: 600; line-height: 1.45; }
.cert-card figcaption span { font-size: 12px; color: var(--ink-400); }

@media (max-width: 900px) {
  .cert-strip { grid-template-columns: repeat(3, 1fr); }
  .cert-grid, .cert-grid.is-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .cert-strip { grid-template-columns: repeat(2, 1fr); }
}
.art-body strong, .art-body b { color: var(--ink-950); font-weight: 600; }
.art-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.art-body a:hover { color: var(--accent-700); }
.art-body img {
  display: block; width: auto; max-width: 100%; height: auto; margin: 22px auto;
  border-radius: 12px; border: 1px solid var(--line); background: #fff;
}
.art-body figure { margin: 22px 0; }
.art-body figcaption { margin-top: 8px; font-size: 12.5px; color: var(--ink-400); text-align: center; }
.art-body ul, .art-body ol { margin: 0 0 16px; padding-left: 22px; }
.art-body li { margin-bottom: 8px; line-height: 1.9; }
.art-body blockquote {
  margin: 22px 0; padding: 14px 20px; background: var(--accent-50);
  border-left: 3px solid var(--accent-200); border-radius: 0 10px 10px 0; color: #2e5c3e;
}
.art-body blockquote p:last-child { margin-bottom: 0; }
.art-body table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14.5px; }
.art-body th { background: var(--ink-950); color: #fff; text-align: left; padding: 10px 14px; font-weight: 600; }
.art-body td { padding: 10px 14px; border-bottom: 1px solid var(--line); line-height: 1.75; }
.art-body hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }
.art-body code { background: var(--accent-50); padding: 2px 6px; border-radius: 5px; font-size: 0.92em; }

.art-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 18px; font-size: 13px; color: rgba(255, 255, 255, 0.62); }
.art-meta span { display: inline-flex; align-items: center; gap: 6px; }
.art-meta .icon { width: 14px; height: 14px; }

.art-side { position: sticky; top: 92px; }
.art-side-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 20px; margin-bottom: 16px; }
.art-side-card h4 { margin: 0 0 12px; font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-400); font-weight: 600; }
.art-side-card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.art-side-card li a { font-size: 14px; color: var(--ink-900); line-height: 1.6; display: block; }
.art-side-card li a:hover { color: var(--accent); }
.art-side-card p { margin: 0 0 12px; font-size: 13.5px; line-height: 1.7; color: var(--ink-400); }
.art-side-card .btn { width: 100%; justify-content: center; }

.art-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.art-nav a { flex: 1 1 240px; padding: 14px 18px; border: 1px solid var(--line); border-radius: 12px; font-size: 14px; color: var(--ink-900); line-height: 1.6; }
.art-nav a:hover { border-color: var(--accent-200); background: var(--accent-50); }
.art-nav small { display: block; font-size: 11.5px; color: var(--ink-400); margin-bottom: 4px; letter-spacing: 0.05em; }

.kb-filter { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.kb-filter a {
  padding: 7px 15px; border: 1px solid var(--line); border-radius: 999px;
  font-size: 13.5px; color: var(--ink-700); background: #fff; transition: all 0.2s;
}
.kb-filter a:hover, .kb-filter a.is-on { background: var(--accent); border-color: var(--accent); color: #fff; }
.kb-count { font-size: 13px; color: var(--ink-400); margin-bottom: 8px; }

@media (max-width: 900px) {
  .art-wrap { grid-template-columns: 1fr; gap: 32px; }
  .art-side { position: static; }
  .art-body { font-size: 15.5px; }
  .art-body h2 { font-size: 20px; }
}

/* ---------- 24.2 响应式兜底：正文表格小屏横向滚动，防止撑破版心 ---------- */
@media (max-width: 640px) {
  .art-body table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .kb-filter { gap: 8px; }
}

/* ---------- 26. 自动定位：左下角浮动气泡横幅 + 城市选择弹层 ----------
   动效三段式：雷达扫描（定位中）→ 波纹脉冲+城市名弹入（定位完成）→ 气泡浮起（横幅入场）
   橙色仅用于雷达波纹与脉冲点（活元素，面积 <5%），底面全部纸白+品牌绿 */

/* 26.1 横幅容器：气泡浮起入场（与首屏上升气泡动效呼应） */
.geo-bar {
  position: fixed; left: 20px; bottom: 20px; z-index: 90;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  max-width: 420px; padding: 13px 16px;
  background: var(--paper); border: 1px solid var(--accent-100);
  border-radius: 16px; box-shadow: 0 10px 34px rgba(14, 36, 22, 0.16);
  animation: geoRise 0.55s var(--ease) both;
  transition: opacity 0.32s, transform 0.32s;
}
.geo-bar.is-out { opacity: 0; transform: translateY(14px) scale(0.97); pointer-events: none; }
@keyframes geoRise {
  0% { opacity: 0; transform: translateY(26px) scale(0.92); }
  60% { opacity: 1; }
  80% { transform: translateY(-3px) scale(1.015); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

/* 26.2 定位中：雷达扫描（三圈橙波纹 + 绿色 pin 悬浮呼吸） */
.geo-radar { position: relative; width: 34px; height: 34px; flex: 0 0 auto; }
.geo-radar .geo-pin { position: absolute; left: 50%; top: 50%; width: 18px; height: 18px; margin: -14px 0 0 -9px; color: var(--accent); animation: geoHover 1.6s ease-in-out infinite; }
@keyframes geoHover { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-2.5px); } }
.geo-radar i {
  position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid var(--orange); opacity: 0;
  animation: geoPing 1.8s cubic-bezier(0.2, 0.6, 0.4, 1) infinite;
}
.geo-radar i:nth-child(2) { animation-delay: 0.6s; }
.geo-radar i:nth-child(3) { animation-delay: 1.2s; }
@keyframes geoPing {
  0% { transform: scale(0.35); opacity: 0.85; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* 26.3 定位完成：脉冲点 + pin 弹跳 + 城市名浮现 */
.geo-pinwrap { position: relative; width: 34px; height: 34px; flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center; }
.geo-pinwrap .geo-pin { width: 22px; height: 22px; color: var(--accent); animation: geoDrop 0.5s var(--ease) both; }
@keyframes geoDrop {
  0% { opacity: 0; transform: translateY(-14px) scale(1.4); }
  55% { opacity: 1; transform: translateY(2px) scale(0.94); }
  100% { transform: translateY(0) scale(1); }
}
.geo-pinwrap.is-dim .geo-pin { color: var(--ink-400); animation: none; }
.geo-pulse { position: absolute; left: 50%; bottom: 3px; width: 8px; height: 8px; margin-left: -4px; border-radius: 50%; background: var(--orange); }
.geo-pulse::before, .geo-pulse::after {
  content: ""; position: absolute; inset: -4px; border-radius: 50%;
  border: 1.5px solid var(--orange); animation: geoPing 2s cubic-bezier(0.2, 0.6, 0.4, 1) infinite;
}
.geo-pulse::after { animation-delay: 1s; }

.geo-txt { display: grid; gap: 1px; min-width: 0; }
.geo-txt b { font-size: 14px; color: var(--ink-900); font-weight: 600; line-height: 1.4; }
.geo-txt b em { font-style: normal; color: var(--accent); }
.geo-txt small { font-size: 12px; color: var(--ink-400); line-height: 1.4; }
.geo-cityname em { display: inline-block; animation: geoNameIn 0.6s var(--ease) 0.15s both; }
@keyframes geoNameIn {
  0% { opacity: 0; transform: translateX(-8px); }
  100% { opacity: 1; transform: translateX(0); }
}

/* 26.4 横幅按钮组 */
.geo-go, .geo-swap, .geo-x, .geo-btn {
  border: 0; cursor: pointer; font: inherit; border-radius: 999px; transition: all 0.2s var(--ease);
}
.geo-go { flex: 0 0 auto; display: inline-flex; align-items: center; gap: 4px; padding: 8px 16px; font-size: 13.5px; font-weight: 600; background: var(--accent); color: #fff; text-decoration: none; }
.geo-go:hover { background: var(--accent-600); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(32, 90, 47, 0.3); }
.geo-swap { flex: 0 0 auto; padding: 8px 14px; font-size: 13px; background: transparent; color: var(--accent-700); border: 1px solid var(--accent-100); }
.geo-swap:hover { border-color: var(--accent-200); background: var(--accent-50); }
.geo-btn { padding: 8px 16px; font-size: 13.5px; font-weight: 600; background: var(--accent); color: #fff; }
.geo-x { flex: 0 0 auto; width: 30px; height: 30px; border-radius: 50%; background: transparent; color: var(--ink-400); font-size: 16px; line-height: 1; }
.geo-x:hover { background: var(--paper-3); color: var(--ink-900); }

/* 26.5 城市选择弹层 */
.geo-modal {
  position: fixed; inset: 0; z-index: 120; display: flex; align-items: center; justify-content: center;
  padding: 20px; background: rgba(14, 36, 22, 0.45);
  backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px);
  animation: geoFade 0.25s ease both;
}
.geo-modal.is-out { opacity: 0; transition: opacity 0.2s; }
@keyframes geoFade { from { opacity: 0; } to { opacity: 1; } }
body.geo-modal-open { overflow: hidden; }
.geo-modal-in {
  width: min(680px, 100%); max-height: min(82vh, 720px); display: flex; flex-direction: column;
  background: var(--paper); border-radius: 18px; border: 1px solid var(--line);
  box-shadow: 0 24px 70px rgba(14, 36, 22, 0.3);
  animation: geoPop 0.35s var(--ease) both;
}
@keyframes geoPop {
  0% { opacity: 0; transform: translateY(22px) scale(0.96); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}
.geo-modal-head { display: flex; align-items: center; gap: 10px; padding: 18px 20px 14px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.geo-modal-head b { font-size: 16px; color: var(--ink-900); }
.geo-modal-head .geo-pinwrap { width: 26px; height: 26px; }
.geo-modal-head .geo-pin { width: 17px; height: 17px; }
#geoSearch {
  flex: 1 1 200px; height: 38px; border: 1px solid var(--line); border-radius: 999px;
  padding: 0 16px; font: inherit; font-size: 13.5px; background: var(--paper-2); outline: none; min-width: 0;
}
#geoSearch:focus { border-color: var(--accent-200); background: #fff; }
.geo-modal-body { overflow-y: auto; padding: 18px 20px 22px; }
.geo-group { margin-bottom: 18px; }
.geo-group h4 { font-size: 12.5px; letter-spacing: 0.1em; color: var(--ink-400); margin: 0 0 10px; font-weight: 600; }
.geo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 8px; }
.geo-chip {
  position: relative; display: flex; align-items: center; justify-content: center; gap: 4px;
  padding: 9px 6px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 13.5px; color: var(--ink-900); text-decoration: none; background: var(--paper-2);
  transition: all 0.18s var(--ease);
}
.geo-chip:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-50); transform: translateY(-2px); box-shadow: 0 5px 14px rgba(32, 90, 47, 0.12); }
.geo-chip.is-direct { border-color: var(--accent-200); background: var(--accent-50); font-weight: 600; }
.geo-chip i {
  font-style: normal; font-size: 10px; line-height: 1; padding: 2.5px 5px; border-radius: 5px;
  background: var(--accent); color: #fff; letter-spacing: 0.05em;
}

/* 26.6 移动端：横幅铺满底部 + 弹层双列 */
@media (max-width: 640px) {
  .geo-bar { left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom, 0px)); max-width: none; padding: 12px 14px; gap: 10px; border-radius: 14px; }
  /* 定位横幅显示时，微信 FAB 上移避让 */
  body.geo-bar-on .wx-fab { bottom: calc(96px + env(safe-area-inset-bottom, 0px)); }
  .geo-txt b { font-size: 13.5px; }
  .geo-txt small { font-size: 11.5px; }
  .geo-go, .geo-btn { flex: 1 1 100%; justify-content: center; order: 9; padding: 10px 16px; }
  .geo-swap { order: 8; }
  .geo-x { position: absolute; top: 8px; right: 8px; width: 26px; height: 26px; }
  .geo-bar { position: fixed; } /* 底部安全区 */
  .geo-modal { padding: 12px; align-items: flex-end; }
  .geo-modal-in { max-height: 86vh; border-radius: 16px 16px 0 0; animation: geoSheet 0.35s var(--ease) both; }
  @keyframes geoSheet { 0% { opacity: 0; transform: translateY(40px); } 100% { opacity: 1; transform: translateY(0); } }
  .geo-grid { grid-template-columns: repeat(3, 1fr); }
  #geoSearch { flex-basis: 100%; order: 9; }
}

/* 26.7 减动效：雷达/脉冲/弹跳全部静止（可访问性） */
@media (prefers-reduced-motion: reduce) {
  .geo-bar, .geo-modal, .geo-modal-in { animation: none; }
  .geo-radar i, .geo-radar .geo-pin, .geo-pulse::before, .geo-pulse::after,
  .geo-pinwrap .geo-pin, .geo-cityname em { animation: none; }
}
html.noanim .geo-bar, html.noanim .geo-modal, html.noanim .geo-modal-in,
html.noanim .geo-radar i, html.noanim .geo-radar .geo-pin,
html.noanim .geo-pulse::before, html.noanim .geo-pulse::after,
html.noanim .geo-pinwrap .geo-pin, html.noanim .geo-cityname em { animation: none; }

/* ---------- 27. 全站链接交互统一：悬停/按下颜色渐变过渡至工程橙 ----------
   文字链接悬停与按下时平滑过渡为橙色（浅色底用深橙保证对比度，深色底用亮橙）；
   带底色的按钮（.btn/.nav-cta/.geo-go/.geo-btn/.car-btn）保持自身白字逻辑，不参与变色 */
a {
  transition: color 0.22s var(--ease), opacity 0.22s var(--ease);
}

/* 27.1 浅色底（正文区/导航/下拉/卡片）：深橙 #C4551A，白底对比度达标 */
body a:not(.btn):not(.nav-cta):not(.geo-go):not(.geo-btn):not(.car-btn):hover,
body a:not(.btn):not(.nav-cta):not(.geo-go):not(.geo-btn):not(.car-btn):active,
body a:not(.btn):not(.nav-cta):not(.geo-go):not(.geo-btn):not(.car-btn):focus-visible {
  color: var(--orange-deep);
}
/* 链接内部的子元素文字跟随变色（导航下拉 b/span、产品卡标题等） */
body a:not(.btn):not(.nav-cta):not(.geo-go):not(.geo-btn):not(.car-btn):hover b,
body a:not(.btn):not(.nav-cta):not(.geo-go):not(.geo-btn):not(.car-btn):hover span:not(.badge):not(.icon),
body a:not(.btn):not(.nav-cta):not(.geo-go):not(.geo-btn):not(.car-btn):active b {
  color: var(--orange-deep);
}

/* 27.2 深色底（页脚/深空绿面）：亮橙 #E87722 */
.footer a:not(.btn):not(.nav-cta):hover,
.footer a:not(.btn):not(.nav-cta):active,
.footer a:not(.btn):not(.nav-cta):focus-visible,
.footer a:not(.btn):not(.nav-cta):hover b,
.footer a:not(.btn):not(.nav-cta):hover span {
  color: var(--orange);
}

/* 27.3 下拉菜单内标题行：悬停整行橙色 */
.navbar .drop a:hover b, .navbar .drop a:hover span,
.navbar .drop a:active b, .navbar .drop a:active span { color: var(--orange-deep); }

/* 27.4 减动效环境：直接变色，无过渡 */
@media (prefers-reduced-motion: reduce) {
  a { transition: none; }
}
html.noanim a { transition: none; }

/* ---------- 28. 工厂/园区展示大图（源头工厂实景）---------- */
.factory-fig {
  margin: 30px 0 4px;
  border-radius: 18px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 18px 42px rgba(18, 51, 27, 0.14);
  border: 1px solid #e7efe8;
}
.factory-fig img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}
.factory-fig figcaption {
  padding: 12px 18px;
  font-size: 13px;
  line-height: 1.6;
  color: #52655a;
  background: #fff;
  border-top: 1px solid #eef3ef;
}
.factory-fig figcaption b { color: var(--deep); font-weight: 600; }
/* 首页关于我们区内的同款展示图，与三栏网格之间留白 */
.about-fig { margin-bottom: 26px; }
@media (max-width: 640px) {
  .factory-fig { margin-top: 22px; border-radius: 14px; }
  .factory-fig img { aspect-ratio: 3 / 2; }
}

/* ==========================================================================
   30. v8 全站视觉打磨层（impeccable 审校 · 2026-11-04）
   原则：只做增量覆盖，不改 HTML/JS，不动品牌令牌、首屏气泡与 LOGO 源文件；
   全部为渐进增强——旧浏览器不支持时自动忽略，功能零影响
   ========================================================================== */

/* 30.1 排版精修
   —— 标题断行均衡：避免中文标题末行只剩一两个字；
   —— 段落避头孤行：多行正文不再出现"孤字行"（支持浏览器生效，其余忽略） */
h1, h2, h3, h4 { text-wrap: balance; }
p, li, figcaption, dd { text-wrap: pretty; }

/* 标题字距微收：中文黑体大字略微收紧更显精致，层级更清晰 */
h2, h3 { letter-spacing: -0.01em; }

/* 数字等宽：电话号码、报价、参数表格中数字纵向严格对齐 */
.btn, .top-contact b, .cta-phone b, .footer-bar, td, th {
  font-variant-numeric: tabular-nums;
}

/* 长词/邮箱/URL 防溢出（外贸页与知识库长标题兜底） */
body { overflow-wrap: break-word; }

/* 30.2 间距节奏
   —— 区块留白随视口流式伸缩：大屏更舒展、小屏不空旷（原固定 84px/56px） */
.section { padding: clamp(56px, 8vw, 96px) 0; }
.sec-head { margin-bottom: clamp(34px, 4.5vw, 50px); }

/* 引言宽度约束：一行超过约 30 个汉字时视觉疲劳，限制阅读列宽 */
.sec-head p { max-width: 62ch; }

/* 30.3 组件精修 */
/* 按钮按压反馈：触屏/鼠标按下都有明确响应，操作感更实 */
.btn:active { transform: translateY(0) scale(0.985); transition-duration: 0.06s; }

/* 主按钮悬浮时阴影同步增强，浮起的空间感更真实 */
.btn-primary:hover { box-shadow: 0 12px 30px rgba(32, 90, 47, 0.38); }

/* 选中文本改为品牌绿底反白：复制文案时品牌感一致（原为浅绿底深字） */
::selection { background: var(--accent); color: #fff; }

/* 移动端点击高亮更干净：半透明灰块换成无感（焦点环仍由 :focus-visible 提供） */
html { -webkit-tap-highlight-color: transparent; }

/* 30.4 可访问性与动效细节 */
/* 减少动态偏好下同时关闭平滑滚动（原只关动画，滚动仍跳帧） */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* 深色区（首屏/上门服务/页脚）的键盘焦点环改白色——绿色环在深绿底上不可见 */
.hero :focus-visible,
.section-dark :focus-visible,
.footer :focus-visible { outline-color: #fff; }

/* ============================================================
   32. 排版节奏层（2026-11-04）——段落间距 / 行宽 / 标题层次
   问题：文章正文段间距 15px，段内行距却是 31px（16px × 1.95），
   段间距只有行距的一半，多段正文糊成一堵字墙。
   本层统一为「段间距 ≈ 0.75 倍行距」，并收窄行宽到舒适阅读区间。
   ============================================================ */
:root {
  --para-gap: clamp(24px, 2vw, 32px);      /* 段间距（≈ 1 倍行距，2026-11-04 二次加强） */
  --read-measure: 36em;                    /* 正文行宽：中文约 34–36 字/行 */
}

/* 32.1 文章正文（.art-body：知识库 111 篇 + 案例 + 资讯共用） */
.art-body { max-width: min(760px, var(--read-measure)); }
.art-body p { margin: 0 0 var(--para-gap); }
.art-body > div { margin: 0 0 var(--para-gap); }
.art-body h2 { margin: 64px 0 20px; }
.art-body h3 { margin: 46px 0 16px; }
.art-body h4 { margin: 32px 0 12px; }
.art-body h2:first-child,
.art-body h3:first-child,
.art-body h4:first-child { margin-top: 0; }
.art-body ul,
.art-body ol { margin: 0 0 30px; padding-left: 26px; }
.art-body li { margin-bottom: 14px; }
.art-body li:last-child { margin-bottom: 0; }
.art-body img { margin-top: 34px; margin-bottom: 34px; }
.art-body figure { margin-top: 34px; margin-bottom: 34px; }
.art-body figcaption { margin-top: 12px; line-height: 1.7; }
.art-body blockquote { margin: 34px 0; padding: 20px 26px; }
.art-body table { margin: 30px 0; }
.art-body hr { margin: 46px 0; }

/* 32.2 通用长文（.prose：关于 / 资质 / 案例等页面） */
.prose { max-width: min(860px, 42em); }
.prose p { font-size: 16px; margin: 0 0 var(--para-gap); }
.prose h2 { margin: 56px 0 18px; }
.prose h3 { margin: 40px 0 16px; }
.prose h2:first-child,
.prose h3:first-child { margin-top: 0; }
.prose ul,
.prose ol { list-style: disc; margin: 4px 0 28px; padding-left: 24px; }
.prose li { margin-bottom: 12px; }
.prose li:last-child { margin-bottom: 0; }

/* 32.3 技术问答（ai 技术速查页，32 问之间的呼吸） */
.qa { padding-top: 22px; padding-bottom: 8px; }
.qa p { margin-bottom: 14px; }
.qa p.qa-lead { margin-bottom: 16px; }
.qa p.qa-src { margin-bottom: 20px; }

/* 32.4 区块标题区：标题与引言的层次 */
.sec-head p { margin-top: 18px; line-height: 1.8; }

/* 32.5 卡片内文字：多行描述不再贴边 */
.g-card p { line-height: 1.8; }
.sol-card p { margin-top: 12px; line-height: 1.75; }

/* 32.6 首屏 Hero：两行大字标题需要更大行距与层次留白
   （2026-11-04 五次调整：大标题居眉题与副标题正中——上下等距 84px；
     副标题到按钮收窄到 30px，按钮紧贴文案组；整组因垂直居中自然上提） */
.hero .wrap { padding-top: 72px; padding-bottom: 96px; }
.hero h1 { line-height: 1.24; }
/* 主标题改为单行短语（深度清洗 保养专家）：字距放开一点，避免 8 个字黏成一坨 */
.hero h1 em { letter-spacing: 0.01em; }
.hero-eyebrow { margin-bottom: 84px; }
/* 副标题用空格分列服务对象（无标点）：靠词间距把 5 个词分开，不靠顿号 */
.hero-sub { margin-top: 84px; line-height: 1.85; word-spacing: 0.7em; }
.hero-cta { margin-top: 30px; }

/* 32.8 首页与内页区块：原来 8–16px 的段距一并抬到「约 1 倍行距」 */
.prod-card p { margin-top: 14px; line-height: 1.8; }
.case-body p { margin-top: 12px; line-height: 1.75; }
.local-copy > p:not(.kicker) { margin-top: 24px; line-height: 1.85; }
.local-copy .loc-now { margin-top: 28px; }
.local-copy .city-chips { margin-top: 28px; }
.local-copy .local-actions { margin-top: 36px; }
.about-col > p { margin-top: 14px; line-height: 1.85; }
.about-col > p + p { margin-top: 18px; }
.warranty-card p { margin-top: 16px; line-height: 1.8; }
.faq-item p { margin-top: 14px; line-height: 1.95; }
.cta-band p { line-height: 1.8; }
.art-side-card p { margin-bottom: 16px; line-height: 1.8; }
.art-side-card p:last-child { margin-bottom: 0; }
.kb-foot p + p { margin-top: 14px; }
.tldr p { margin-top: 12px; line-height: 1.9; }
.sec-head p { margin-top: 22px; }

/* 32.7 移动端：保留透气感，但不让留白吃掉一屏 */
@media (max-width: 640px) {
  :root { --para-gap: 22px; }
  .art-body h2 { margin: 44px 0 16px; }
  .art-body h3 { margin: 34px 0 14px; }
  .art-body ul,
  .art-body ol { margin-bottom: 24px; }
  .art-body img,
  .art-body figure { margin-top: 26px; margin-bottom: 26px; }
  .prose h2 { margin: 40px 0 14px; }
  .prose h3 { margin: 30px 0 12px; }
  .local-copy > p:not(.kicker) { margin-top: 20px; }
  .local-copy .loc-now { margin-top: 22px; }
  .local-copy .city-chips { margin-top: 22px; }
  .local-copy .local-actions { margin-top: 28px; }
  .sec-head p { margin-top: 18px; }
  .hero .wrap { padding-top: 56px; padding-bottom: 64px; }
  .hero-eyebrow { margin-bottom: 44px; }
  .hero-sub { margin-top: 44px; }
  .hero-cta { margin-top: 24px; }
}

/* 32.9 矮屏收敛：屏幕高度不够时，Hero 间距必须压回去，否则首屏被推出视口 */
@media (min-width: 641px) and (max-height: 760px) {
  .hero .wrap { padding-top: 52px; padding-bottom: 60px; }
  .hero-eyebrow { margin-bottom: 56px; }
  .hero-sub { margin-top: 56px; }
  .hero-cta { margin-top: 22px; }
}

/* 32.10 手机横屏 / 极矮屏：优先保证一屏可读 */
@media (max-height: 560px) and (min-width: 641px) {
  .hero .wrap { padding-top: 32px; padding-bottom: 36px; }
  .hero-eyebrow { margin-bottom: 16px; }
  .hero-sub { margin-top: 16px; }
  .hero-cta { margin-top: 16px; }
}

/* ============================================================
   33. Hero V2 —— 非对称双栏：左文案 + 右设备展台（2026-11-04）
   旧版问题：全部文字挤左半屏，右侧 55% 空场，像 PPT 模板。
   V2：左侧「眉题 / 两行大字 / 场景胶囊 / 按钮组」，
       右侧产品实拍立于圆环展台 + 悬浮参数卡，
       上升气泡动效保留（老板定稿元素）。
   ============================================================ */
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 5vw, 88px);
}
.hero-copy { max-width: 640px; }
.hero-eyebrow { margin-bottom: 26px !important; }
.hero h1 {
  font-size: clamp(42px, 5.2vw, 76px);
  line-height: 1.14;
  letter-spacing: 0;
  max-width: none;
}
.hero h1 em { color: var(--orange); }

/* 场景词行：已移至机器下方（2026-11-04 六次调整），纯文字无容器，
   词间用间隔点轻分隔，落在展台正下方，呼应展台的对称构图 */
.hero-chips {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: baseline;
  gap: 2px 0;
  margin-top: 2px;
}
.hero-chips span {
  padding: 0;
  border: 0;
  font-size: 15px;
  letter-spacing: .14em;
  color: var(--on-dark-soft);
}
.hero-chips span:not(:last-child)::after {
  content: "·";
  margin: 0 14px;
  color: rgba(232, 119, 34, .55);
}
.hero-cta { margin-top: 46px; }

/* —— 右侧展台：圆环 + 底部光晕 + 悬浮主机（高度让 34px 给场景词行） —— */
.hero-visual { position: relative; min-height: 508px; }
.hero-stage {
  position: relative;
  height: 508px;
  display: flex; align-items: flex-end; justify-content: center;
}
.stage-ring {
  position: absolute; bottom: 44px; left: 50%; transform: translateX(-50%);
  width: min(470px, 36vw); aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .15);
  background: radial-gradient(circle at 50% 32%, rgba(255, 255, 255, .07), rgba(255, 255, 255, .015) 62%);
}
.stage-ring::before {
  content: ""; position: absolute; inset: -26px;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, .10);
}
.stage-glow {
  position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
  width: 440px; height: 96px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(232, 119, 34, .32), rgba(232, 119, 34, .07) 58%, transparent);
  filter: blur(10px);
}
.stage-machine {
  position: relative; z-index: 2;
  height: min(408px, 30vw);
  width: auto;
  filter: drop-shadow(0 36px 48px rgba(0, 0, 0, .5)) drop-shadow(0 8px 16px rgba(0, 0, 0, .35));
  animation: machine-float 7s ease-in-out infinite;
}
@keyframes machine-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@media (prefers-reduced-motion: reduce) {
  .stage-machine { animation: none; }
}

/* —— 悬浮参数卡（左上卡：800W永磁变频 + 机型名；右下卡：橙字「微纳米气泡」+小字三大作用） —— */
.hero-float {
  position: absolute; z-index: 3;
  padding: 14px 20px 12px;
  border-radius: 14px;
  background: rgba(14, 36, 22, .58);
  border: 1px solid rgba(255, 255, 255, .16);
  backdrop-filter: blur(10px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .35);
  color: #fff;
}
.hero-float b { font-size: 19px; font-weight: 700; font-variant-numeric: tabular-nums; }
.hero-float i { font-style: normal; margin: 0 6px; color: rgba(255, 255, 255, .45); }
.hero-float small { display: block; margin-top: 4px; font-size: 12px; color: var(--on-dark-soft); letter-spacing: .04em; }
.hero-float-a { top: 7%; right: 1%; }
.hero-float-b { bottom: 15%; left: -1%; }
.hero-float-b b { color: var(--orange); }
/* EN 首页：hero 规格卡——同步中文站首屏两张悬浮卡的文案；EN 版 hero 为单列布局，静态排布 */
.hero-specs { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-specs .hero-float { position: static; }

/* —— 中屏：右栏收窄，展台等比缩 —— */
@media (max-width: 1180px) {
  .hero-visual, .hero-stage { min-height: 432px; height: 432px; }
  .stage-machine { height: min(340px, 30vw); width: auto; }
  .stage-ring { width: min(370px, 38vw); }
}
/* —— 平板/手机：单列，展台移到文案下方 —— */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 8px; }
  .hero-copy { max-width: 680px; }
  .hero-visual { min-height: 372px; margin-top: 24px; }
  .hero-stage { height: 372px; }
  .stage-machine { height: 300px; width: auto; }
  .stage-ring { width: min(300px, 64vw); bottom: 26px; }
  .stage-glow { width: 300px; }
  .hero-float { padding: 10px 14px 9px; }
  .hero-float b { font-size: 15px; }
  .hero-float small { font-size: 10.5px; }
  .hero-float-a { top: 0; right: 0; }
  .hero-float-b { bottom: 10%; left: 0; }
}
@media (max-width: 640px) {
  .hero-grid { gap: 4px; }
  .hero-chips { grid-column: 1 / -1; order: 3; margin-top: 0; }
  .hero-chips span { font-size: 13px; }
  .hero-chips span:not(:last-child)::after { margin: 0 10px; }
  .hero-cta { margin-top: 30px; }
  /* 手机端：首屏高度由内容决定。原来的 min-height:78dvh 加 overflow:hidden
     会把超出容器的参数卡下半截裁掉（2026-11-04 老板截图反馈） */
  .hero { min-height: 0; }
  @supports (min-height: 100dvh) { .hero { min-height: 0; } }
  .hero .wrap { padding-top: 52px; padding-bottom: 60px; }
  /* 手机端：两张参数卡不再悬浮（会挡住机器），改为产品图下并排的信息条
     注意必须同时覆盖 1180 断点的 height:460px，否则容器被钉死、卡片被裁 */
  .hero-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    height: auto;
    min-height: 0;
    margin-top: 12px;
  }
  .hero-stage { grid-column: 1 / -1; height: 264px; min-height: 0; }
  .stage-machine { height: 196px; width: auto; }
  .stage-ring { width: min(220px, 64vw); bottom: 14px; }
  .stage-ring::before { display: none; }
  .stage-glow { width: 220px; height: 56px; }
  .hero-float { position: static; padding: 11px 12px 10px; border-radius: 12px; }
  .hero-float b { font-size: 15px; }
  .hero-float i { margin: 0 3px; }
  .hero-float small { font-size: 10px; line-height: 1.4; margin-top: 5px; }
  .hero-float-a,
  .hero-float-b { display: block; top: auto; right: auto; bottom: auto; left: auto; }
}
/* —— 矮屏：展台压扁，保证一屏可读 —— */
@media (min-width: 641px) and (max-height: 760px) {
  .hero-visual, .hero-stage { min-height: 392px; height: 392px; }
  .stage-machine { height: 280px; width: auto; }
  .stage-ring { width: min(330px, 28vw); bottom: 24px; }
  .hero-chips span { font-size: 13px; }
}
@media (max-height: 560px) and (min-width: 641px) {
  .hero-visual, .hero-stage { min-height: 280px; height: 280px; }
  .stage-machine { height: 184px; width: auto; }
  .stage-ring { width: min(220px, 24vw); bottom: 16px; }
  .stage-ring::before, .hero-float small, .hero-chips { display: none; }
  .hero-float { padding: 8px 14px; }
}

/* 33.1 横向溢出保护：任何元素超宽都不再产生横向滚动（手机顶栏电话被截断的根源） */
html, body { overflow-x: clip; }

/* ============================================================
   34. 产品参数带 × 轮播联动 v2（2026-11-04）
   四格内容随激活产品整组切换：加 .spec-out 整体淡出下移（延迟归零、快速），
   写入新内容后移除 → 按格错峰延迟淡入上浮（transition 方案，无 fill-mode，
   任何渲染环境稳态均为完全可见）。
   激活判定：窄屏=最前可见卡；桌面=鼠标悬停卡，移出后回落滚动位。
   首格参数用深橙做唯一重点（VI：白底小字橙用 #C4551A）。
   ============================================================ */
.spec-strip .spec-cell {
  opacity: 1; transform: none;
  transition: opacity .35s ease, transform .35s ease;
}
.spec-strip .spec-cell:nth-child(2) { transition-delay: .05s; }
.spec-strip .spec-cell:nth-child(3) { transition-delay: .1s; }
.spec-strip .spec-cell:nth-child(4) { transition-delay: .15s; }
.spec-strip .spec-cell:first-child b { color: #C4551A; }
.spec-strip.spec-out .spec-cell {
  opacity: 0; transform: translateY(8px);
  transition: opacity .16s ease, transform .16s ease;
  transition-delay: 0s;
}
@media (prefers-reduced-motion: reduce) {
  .spec-strip .spec-cell { transition: none; }
}

/* ============================================================
   35. 轮播激活卡突出展示（2026-11-04）
   激活卡（滚动位/悬停对应产品）：微放大 + 绿边 + 深阴影 + 橙线实；
   非激活卡：半透明 + 微缩 + 橙线淡化。
   只用 transform/opacity/border/box-shadow —— 不触发布局，无跳动；
   无缝回绕时激活类名不变（克隆卡与真实卡同 data-tech），无闪烁。
   作用域 .car-sync 由 JS 仅在产品轮播轨道上添加。
   ============================================================ */
.car-track.car-sync .prod-card {
  transition: transform 0.45s var(--ease), opacity 0.45s ease,
              border-color 0.45s, box-shadow 0.45s var(--ease);
}
.car-track.car-sync .prod-card:not(.car-on) {
  opacity: 0.55;
  transform: scale(0.97);
  box-shadow: 0 4px 14px rgba(18, 51, 27, 0.05);
}
.car-track.car-sync .prod-card:not(.car-on)::before { opacity: 0.3; }
.car-track.car-sync .prod-card.car-on {
  opacity: 1;
  transform: scale(1.015);
  border-color: rgba(32, 90, 47, 0.28);
  box-shadow: 0 16px 36px rgba(18, 51, 27, 0.14);
}
/* 与既有悬浮动效合成（.prod-card:hover 的 translateY 被 .car-on 覆盖） */
.car-track.car-sync .prod-card.car-on:hover { transform: translateY(-6px) scale(1.015); }
@media (prefers-reduced-motion: reduce) {
  .car-track.car-sync .prod-card { transition: none; }
}

/* ============================================================
   36. 首页「解决方案 / 案例分享」展示层统一到产品中心（2026-11-04）
   ------------------------------------------------------------
   只改展示层：两模块卡片复用 .prod-card 骨架（外壳 / 橙色顶线 / 图标头 /
   浅绿视觉面板 / 底部链接），原有标题、正文、数字、data-cms 键一字未改。
   复合选择器 .prod-card.sol-card / .prod-card.case-card 用于盖掉旧的
   .sol-card / .case-card 样式；特异性低于第 35 节 .car-sync 激活规则，
   因此激活卡突出态与产品中心完全一致，桌面/移动端无额外分支。
   ============================================================ */

/* 36.1 卡片外壳：与 .prod-card 同底、同描边、同圆角、同阴影、同悬停 */
.prod-card.sol-card,
.prod-card.case-card {
  background: #fff;
  border: 1px solid rgba(18, 51, 27, 0.10);
  border-radius: var(--radius);
  padding: 24px 24px 22px;
  box-shadow: 0 8px 24px rgba(18, 51, 27, 0.07);
  color: var(--ink-900);
}
.prod-card.sol-card:hover,
.prod-card.case-card:hover {
  transform: translateY(-6px);
  border-color: rgba(32, 90, 47, 0.30);
  box-shadow: 0 18px 40px rgba(18, 51, 27, 0.13);
}

/* 36.2 信息层级：图标 + 主标题 + 副信息（原「适合…」/ 原案例角标） */
.prod-card.sol-card h3 { font-size: 19px; color: var(--ink-900); }
.prod-card.case-card h3 { font-size: 16.5px; line-height: 1.45; color: var(--ink-900); }
.prod-card.sol-card .sub,
.prod-card.case-card .sub {
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0;
  color: #7c8c80;
}

/* 36.3 视觉面板：与产品卡同款雾绿渐变、同尺寸、同底部间距 */
.prod-card.sol-card .show-visual,
.prod-card.case-card .show-visual {
  position: relative;
  flex: 1 1 auto;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  gap: 10px;
  padding: 20px 22px;
  text-align: left;
}
.prod-card.case-card .show-visual { align-items: center; text-align: center; }

/* 方案卡：大号线稿水印（纯装饰，无新增文案），描述文字置上面板 */
.prod-card.sol-card .show-glyph {
  position: absolute;
  right: -8px;
  bottom: -12px;
  opacity: 0.07;
  pointer-events: none;
}
.prod-card.sol-card .show-glyph .icon {
  width: 96px;
  height: 96px;
  color: var(--accent);
  stroke-width: 1.2;
  vertical-align: baseline;
}

/* 描述文字：重置 .prod-card p / .sol-card p 的 flex:1 与旧配色 */
.prod-card.sol-card .show-desc,
.prod-card.case-card .show-desc {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  width: 100%;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--ink-700);
}
.prod-card.case-card .show-desc {
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-400);
  text-align: center;
}

/* 案例数值：保留原 data-count 计数动效与单位，改浅底深橙以保证对比度 */
.prod-card.case-card .case-num {
  position: relative;
  z-index: 1;
  width: 100%;
}
.prod-card.case-card .case-num b {
  display: block;
  font-size: clamp(30px, 3vw, 40px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}
.prod-card.case-card .case-num b .num { color: #C4551A; }
.prod-card.case-card .case-num b .unit {
  font-size: 0.5em;
  color: var(--ink-400);
  margin-left: 1px;
}
.prod-card.case-card .case-num > span {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--ink-400);
}

/* 36.4 底部链接：与产品卡「了解技术 →」同款橙色行 */
.prod-card.sol-card .go,
.prod-card.case-card .go {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: auto;
  padding-top: 20px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--orange);
}
.prod-card.sol-card .go .icon,
.prod-card.case-card .go .icon { transition: transform 0.2s var(--ease); }
.prod-card.sol-card:hover .go .icon,
.prod-card.case-card:hover .go .icon { transform: translateX(4px); }

/* 36.5 移动端：与产品卡同步收窄内边距，避免面板文字贴边 */
@media (max-width: 640px) {
  .prod-card.sol-card .show-visual,
  .prod-card.case-card .show-visual { min-height: 188px; padding: 18px; }
  .prod-card.case-card h3 { font-size: 16px; }
}
@media (max-width: 480px) {
  .prod-card.sol-card,
  .prod-card.case-card { padding: 24px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  .prod-card.sol-card .show-glyph { display: none; }
}



/* ==================== 37. 栏目列表缩略图与卡片可点击语义（2026-11-04） ====================
   修复：列表模板无图位、图片加载失败破图、静态卡被误认为可点。
   只作用于第 37 节新增类名，不改产品中心 / 解决方案 / 案例分享首页轮播展示层。 */
.card-thumb {
  display: block; position: relative; width: 100%; aspect-ratio: 16 / 10;
  background: #EAF1EB; border-radius: 10px; overflow: hidden; flex: 0 0 auto;
  border: 1px solid rgba(32, 90, 47, .08);
}
.card-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.card-thumb.is-empty {
  background-color: #EAF1EB;
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2096%2096'%20fill='none'%20stroke='%23205A2F'%20stroke-width='2.5'%20stroke-linecap='round'%3E%3Ccircle%20cx='48'%20cy='48'%20r='29'/%3E%3Cpath%20d='M27%2052c8-8%2016%208%2024%200s16%208%2018%200'/%3E%3Ccircle%20cx='37'%20cy='35'%20r='3'%20fill='%23E87722'%20stroke='none'/%3E%3Ccircle%20cx='59'%20cy='31'%20r='2'%20fill='%23E87722'%20stroke='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: center; background-size: 84px 84px;
}
.card-thumb.is-empty img { display: none; }
.g-card > .card-thumb { margin: -4px 0 6px; }
.g-card.is-static { cursor: default; }
.g-card.is-static:hover { transform: none; box-shadow: none; border-color: #e2eae4; }
.section-dark .g-card.is-static:hover { border-color: rgba(255,255,255,.13); }

/* 知识库列表：文字行列表 + 左侧缩略图 */
.kb-item { display: flex; align-items: center; gap: 16px; }
.kb-item .card-thumb.kb-thumb { width: 108px; flex: 0 0 108px; aspect-ratio: 16 / 10; border-radius: 8px; }
.kb-item a.kb-title { flex: 1 1 auto; min-width: 0; line-height: 1.55; }
.kb-item time { flex: 0 0 auto; }

/* 案例栏目页：三张可点案例卡 */
.case-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-top: 8px; }
.case-entry {
  display: flex; flex-direction: column; background: #fff; border: 1px solid #e2eae4;
  border-radius: 14px; overflow: hidden; text-decoration: none; color: inherit;
  transition: transform .28s, box-shadow .28s, border-color .28s;
}
.case-entry:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(18,51,27,.12); border-color: #c9d8cd; }
.case-entry > .card-thumb { border-radius: 0; border: 0; border-bottom: 1px solid #e2eae4; }
.case-entry > .card-thumb img { object-fit: contain; padding: 10px; background: #EAF1EB; }
.case-entry-body { display: flex; flex-direction: column; gap: 8px; padding: 18px 20px 20px; }
.case-entry-body .kicker { margin: 0; font-size: 12px; letter-spacing: .08em; color: #C4551A; font-weight: 600; }
.case-entry-body h3 { margin: 0; font-size: 17px; line-height: 1.55; color: #12331B; }
.case-entry-body p { margin: 0; font-size: 13.5px; line-height: 1.8; color: #5D6B62; }
.case-entry .go { margin-top: 6px; color: #C4551A; font-weight: 600; font-size: 13.5px; }

/* 案例详情页：系统示意图与图注 */
.case-figure { max-width: 760px; margin: 0 auto; }
.case-figure img {
  display: block; width: 100%; height: auto; border-radius: 14px;
  border: 1px solid #e2eae4; background: #EAF1EB;
}
.fig-note { margin: 10px 0 0; font-size: 12.5px; line-height: 1.7; color: #7C8C80; text-align: center; }

@media (max-width: 720px) {
  .kb-item { gap: 12px; }
  .kb-item .card-thumb.kb-thumb { width: 76px; flex-basis: 76px; }
  .kb-item a.kb-title { font-size: 14px; }
  .case-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .case-entry, .case-entry:hover { transition: none; transform: none; }
}

/* 第 37 节补充：空态图位显示该卡自身主题图标，避免全站通用图重复 */
.card-thumb.is-empty.has-icon { background-image: none; }
.card-thumb.is-empty.has-icon > .icon {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 56px; height: 56px; color: #205A2F; opacity: .42; stroke-width: 1.6;
}

/* ---------- 38. 发布前整理：合规提示与浅底强调字对比度（2026-11-04） ---------- */
/* 表单提交前的可见说明：避免用户误以为信息已发送 */
/* 注意：提示由 JS 插入为表单第一个子节点，会被 .quote-form > p 的深底白字规则覆盖，
   故此处用更高优先级选择器锁住深字浅底配色（2026-11-05 修复英文站白字不可见问题） */
.form-notice,
.quote-form > p.form-notice,
.form-card form > p.form-notice {
  width: 100%;
  margin: 0 0 14px;
  padding: 10px 13px;
  border-left: 3px solid #E87722;
  border-radius: 0 8px 8px 0;
  background: #FBEDE2;
  color: #12331B;
  font-weight: 500;
  font-size: 12.5px;
  line-height: 1.7;
}
/* 浅底 #f08a3c 仅 2.5:1，改深橙 #C4551A（4.51:1，过 WCAG AA）；深底保持原色 */
.prose em, .g-card em, .sec-head h2 em { color: #C4551A; }
.page-hero em, .page-hero .lead em, .cta-band h2 em, .section-dark .g-card em { color: #f08a3c; }
/* 案例卡大字由数值改为中文系统标签后，收敛字号避免换行 */
.prod-card.case-card .case-num b { font-size: clamp(26px, 2.4vw, 34px); letter-spacing: .02em; }