/* ============================================================
   MERTECH 检测仪器 · 精密检测主题
   深灰精密 · 数据精准 · 检测报告式排版
   架构模式：第三方模板模式（{pboot:sitedomain}/skin/）
   ------------------------------------------------------------
   设计系统：
     深灰   #1A1A1A   主背景
     卡片   #22242A   卡片底 / #2A2D34 抬升
     银灰   #A0AEC0   科技感辅助
     科技蓝 #1A6BB0   数据强调 / #2F8BD0 悬停
     边框   #33363F   银灰细线
   字体：Inter(本地自托管) + JetBrains Mono(本地自托管) + CJK系统栈
   圆角：4-6px（精密感）
   本地化字体：skin/lib/fonts/ 仅 Latin 子集（每字重约 20KB），CJK 走系统字体栈
   ============================================================ */

/* ---------- 本地自托管字体（Latin 子集，轻量） ---------- */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../lib/fonts/inter-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../lib/fonts/inter-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../lib/fonts/inter-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../lib/fonts/inter-latin-700-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../lib/fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../lib/fonts/jetbrains-mono-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../lib/fonts/jetbrains-mono-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../lib/fonts/jetbrains-mono-latin-700-normal.woff2') format('woff2');
}

/* ---------- 设计令牌 ---------- */
:root {
  --bg: #1A1A1A;
  --bg-2: #1F2024;
  --bg-card: #22242A;
  --bg-raised: #2A2D34;
  --silver: #A0AEC0;
  --blue: #1A6BB0;
  --blue-light: #2F8BD0;
  --blue-glow: rgba(26, 107, 176, 0.32);
  --white: #FFFFFF;
  --text: #E9EBF0;
  --text-2: #C7CCD6;
  --muted: #8A94A6;
  --border: #33363F;
  --border-light: #3E424C;
  --radius: 6px;
  --radius-sm: 4px;
  --header-h: 76px;
  --font-sans: "Inter", "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", "SF Mono", Consolas, "Courier New", monospace;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  --shadow-blue: 0 8px 24px rgba(26, 107, 176, 0.28);
  --tr: 0.25s ease;
  --z-dropdown: 60;
  --z-header: 50;
  --z-nav: 70;
  --z-fixed: 90;
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color var(--tr); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 14px; }
h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.35; letter-spacing: 0.01em; }
::selection { background: var(--blue); color: #fff; }

/* 自定义滚动条 */
::-webkit-scrollbar { width: 9px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: #3A3E48; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--blue); }

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.overflow-hidden { overflow: hidden; }

/* 精密十字准星装饰底纹 */
.crosshair-bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    radial-gradient(circle at 8px 8px, rgba(160, 174, 192, 0.07) 1px, transparent 1.5px);
  background-size: 24px 24px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 500; letter-spacing: 0.04em;
  border: 1px solid transparent; cursor: pointer;
  transition: all var(--tr); white-space: nowrap;
}
.btn i { font-size: 13px; }
.btn--primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn--primary:hover { background: var(--blue-light); border-color: var(--blue-light); box-shadow: var(--shadow-blue); }
.btn--outline { background: transparent; color: var(--white); border-color: rgba(255, 255, 255, 0.35); }
.btn--outline:hover { border-color: var(--blue-light); color: var(--blue-light); }
.btn--ghost { background: transparent; color: var(--silver); border-color: var(--border-light); }
.btn--ghost:hover { border-color: var(--blue); color: var(--blue-light); }
.btn--sm { padding: 8px 16px; font-size: 13px; }

/* ---------- 区块通用 ---------- */
.section { position: relative; padding: 84px 0; }
.section--alt { background: var(--bg-2); }
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--blue-light); margin-bottom: 14px;
}
.section-tag::before { content: ""; width: 22px; height: 1px; background: var(--blue); }
.section-head--center .section-tag::after { content: ""; width: 22px; height: 1px; background: var(--blue); }
.section-title { font-size: 32px; font-weight: 600; color: var(--white); letter-spacing: 0.02em; }
.section-title em { font-style: normal; color: var(--blue-light); }
.section-subtitle { margin-top: 12px; color: var(--muted); font-size: 15px; }

/* 标题行 + 右侧更多链接 */
.section-head--row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; max-width: 100%; }
.section-head--row .section-head__more { flex-shrink: 0; margin-bottom: 6px; }

/* ---------- 顶部导航 ---------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; height: var(--header-h);
  z-index: var(--z-header);
  transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  border-bottom: 1px solid transparent;
}
.header.scrolled { background: rgba(26, 26, 26, 0.95); border-bottom-color: rgba(255, 255, 255, 0.06); box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35); }
.header--inner { background: rgba(26, 26, 26, 0.92); border-bottom-color: rgba(255, 255, 255, 0.06); }
.header__inner { max-width: 1400px; height: 100%; margin: 0 auto; padding: 0 28px; display: flex; align-items: center; gap: 40px; }

/* Logo */
.header__logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.header__logo-mark {
  width: 42px; height: 42px; border-radius: 6px;
  background: linear-gradient(135deg, var(--blue) 0%, #0F3D66 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px; position: relative;
  box-shadow: var(--shadow-blue);
}
.header__logo-mark::after {
  content: ""; position: absolute; inset: 4px;
  border: 1px solid rgba(255, 255, 255, 0.35); border-radius: 3px;
}
.header__logo-name { font-size: 17px; font-weight: 700; color: var(--white); letter-spacing: 0.06em; }
.header__logo-sub { display: block; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--blue-light); margin-top: 1px; }

/* 导航 */
.header__nav { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.header__nav-item { position: relative; }
.header__nav-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 10px 14px; font-size: 15px; color: rgba(255, 255, 255, 0.82);
  border-radius: 4px; position: relative;
}
.header__nav-link i.chevron { font-size: 10px; transition: transform var(--tr); }
.header__nav-link:hover { color: var(--white); }
.header__nav-link.active { color: var(--blue-light); }
.header__nav-link.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 5px;
  height: 2px; background: var(--blue); border-radius: 2px;
}
.header.scrolled .header__nav-link { color: var(--text-2); }
.header.scrolled .header__nav-link:hover { color: var(--white); }
.header.scrolled .header__nav-link.active { color: var(--blue-light); }

/* 下拉菜单（z-index 60，13.3 避坑） */
.header__dropdown {
  position: absolute; top: calc(100% + 6px); left: 8px; min-width: 180px;
  background: var(--bg-raised); border: 1px solid var(--border-light);
  border-radius: var(--radius); padding: 8px;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all 0.25s ease; z-index: var(--z-dropdown);
  box-shadow: var(--shadow);
}
.header__nav-item:hover .header__dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.header__nav-item:hover .chevron { transform: rotate(180deg); }
.header__dropdown a {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 12px; font-size: 14px; color: var(--text-2); border-radius: 4px;
}
.header__dropdown a::before { content: ""; width: 3px; height: 3px; background: var(--blue); border-radius: 50%; }
.header__dropdown a:hover { background: rgba(26, 107, 176, 0.14); color: var(--white); }

/* CTA 按钮 */
.header__cta {
  margin-left: 8px; padding: 9px 18px; font-size: 14px; font-weight: 500;
  color: var(--white); border: 1px solid var(--blue); border-radius: 4px;
  transition: all var(--tr); white-space: nowrap;
}
.header__cta:hover { background: var(--blue); box-shadow: var(--shadow-blue); }
.header__cta i { margin-right: 6px; font-size: 12px; }

/* 汉堡按钮 —— 独立于操作区（13.4 避坑） */
.hamburger {
  display: none; width: 44px; height: 44px; margin-left: 6px;
  background: none; border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 6px; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  position: relative; z-index: 85;
}
.hamburger span { display: block; width: 20px; height: 2px; background: var(--white); border-radius: 2px; transition: all 0.3s ease; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.header.scrolled .hamburger { border-color: var(--border-light); }
.header.scrolled .hamburger span { background: var(--text); }

/* 移动端侧滑导航 */
.mobile-nav {
  position: fixed; top: 0; right: -320px; width: 300px; height: 100vh;
  background: var(--bg-raised); z-index: var(--z-nav);
  transition: right 0.35s ease; overflow-y: auto; padding: 28px 22px;
  border-left: 1px solid var(--border-light);
}
.mobile-nav.open { right: 0; }
.mobile-nav__overlay {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.55);
  opacity: 0; visibility: hidden; transition: all 0.3s ease; z-index: 65;
}
.mobile-nav__overlay.open { opacity: 1; visibility: visible; }
.mobile-nav__brand { display: flex; align-items: center; gap: 10px; margin-bottom: 26px; }
.mobile-nav__link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 6px; font-size: 15px; color: var(--text); border-bottom: 1px solid var(--border);
}
.mobile-nav__link:hover, .mobile-nav__link.active { color: var(--blue-light); }
.mobile-nav__sub { display: none; padding: 4px 0 10px 16px; }
.mobile-nav__sub.open { display: block; }
.mobile-nav__sub a {
  display: block; padding: 9px 6px; font-size: 14px; color: var(--text-2); position: relative;
}
.mobile-nav__sub a::before { content: "—"; color: var(--blue); margin-right: 8px; font-size: 12px; }

/* ---------- Hero 首屏 ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; background: var(--bg); }
.hero-swiper { position: absolute; inset: 0; }
.hero-swiper .swiper-slide { position: relative; }
.hero__slide { position: absolute; inset: 0; background-size: cover; background-position: center; }
.hero__overlay {
  position: absolute; inset: 0; z-index: 2;
  background: linear-gradient(90deg, rgba(10, 10, 12, 0.88) 0%, rgba(10, 10, 12, 0.55) 55%, rgba(10, 10, 12, 0.35) 100%);
}
.hero__overlay::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(26, 26, 26, 0.3) 0%, transparent 40%, rgba(26, 26, 26, 0.75) 100%);
}
.hero__content { position: relative; z-index: 5; width: 100%; padding: 140px 0 120px; }
.hero__text { max-width: 780px; }
.hero__tagline {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.26em;
  color: var(--blue-light); text-transform: uppercase; margin-bottom: 26px;
}
.hero__tagline::before { content: ""; width: 46px; height: 1px; background: var(--blue); }
.hero__title {
  font-size: clamp(34px, 5.2vw, 58px); font-weight: 700; color: var(--white);
  line-height: 1.18; letter-spacing: 0.01em;
  position: relative; padding-left: 22px;
}
.hero__title::before {  /* 精密感竖线装饰 */
  content: ""; position: absolute; left: 0; top: 8px; bottom: 8px;
  width: 3px; background: linear-gradient(180deg, var(--blue) 0%, rgba(26, 107, 176, 0.15) 100%);
  border-radius: 3px;
}
.hero__title strong { font-weight: 700; color: var(--white); }
.hero__title span.hl { color: var(--blue-light); }
.hero__subtitle { margin-top: 22px; font-size: 18px; color: var(--silver); max-width: 560px; line-height: 1.8; }
.hero__actions { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }

/* 数字指示器 01 / 05 */
.hero__pagination {
  position: absolute; right: 6%; bottom: 64px; z-index: 6;
  display: flex; align-items: baseline; gap: 6px;
  font-family: var(--font-mono); color: var(--silver); user-select: none;
}
.hero__pagination .swiper-pagination-current { font-size: 30px; color: var(--white); font-weight: 600; }
.hero__pagination .swiper-pagination-sep { font-size: 14px; color: var(--muted); }
.hero__pagination .swiper-pagination-total { font-size: 15px; color: var(--muted); }

/* 滚动指示器 */
.hero__scroll {
  position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); z-index: 6;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--muted); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.3em;
}
.hero__scroll-line { width: 1px; height: 44px; background: rgba(160, 174, 192, 0.35); position: relative; overflow: hidden; }
.hero__scroll-line::after {
  content: ""; position: absolute; top: -50%; left: 0; width: 100%; height: 50%;
  background: var(--blue-light); animation: scrollLine 2.2s ease-in-out infinite;
}
@keyframes scrollLine { 0% { top: -50%; } 100% { top: 110%; } }

/* ---------- 精度数据统计 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 26px; text-align: center;
  position: relative; overflow: hidden; transition: border-color var(--tr), transform var(--tr);
}
.stat-item::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
  opacity: 0; transition: opacity var(--tr);
}
.stat-item:hover { border-color: rgba(26, 107, 176, 0.55); transform: translateY(-3px); }
.stat-item:hover::before { opacity: 1; }
.stat-item__num { font-family: var(--font-mono); font-size: 44px; font-weight: 700; color: var(--white); line-height: 1.1; }
.stat-item__num .u { color: var(--blue-light); font-size: 24px; margin-left: 2px; }
.stat-item__label { margin-top: 12px; color: var(--muted); font-size: 14px; letter-spacing: 0.04em; }
.stat-item__data { margin-top: 8px; font-family: var(--font-mono); font-size: 12px; color: var(--silver); }

/* ---------- 产品数据卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.product-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 22px 22px; overflow: hidden;
  transition: border-color var(--tr), transform var(--tr), box-shadow var(--tr);
}
.product-card::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: linear-gradient(90deg, var(--blue), transparent 70%);
  opacity: 0; transition: opacity var(--tr);
}
.product-card:hover { border-color: rgba(26, 107, 176, 0.6); transform: translateY(-4px); box-shadow: var(--shadow); }
.product-card:hover::after { opacity: 1; }
.product-card__acc {
  font-family: var(--font-mono); font-size: 26px; font-weight: 700; color: var(--blue-light);
  letter-spacing: 0.01em; display: flex; align-items: baseline; gap: 2px;
}
.product-card__acc span { font-size: 13px; font-weight: 400; color: var(--silver); }
.product-card__ico {
  width: 100%; height: 150px; object-fit: cover; border-radius: var(--radius-sm);
  margin: 18px 0 16px; background: var(--bg-raised);
}
.product-card__name { font-size: 16px; font-weight: 600; color: var(--white); }
.product-card__range {
  margin-top: 8px; font-family: var(--font-mono); font-size: 12.5px; color: var(--muted);
  display: flex; align-items: center; gap: 6px;
}
.product-card__range i { color: var(--blue-light); font-size: 11px; }
.product-card__link {
  margin-top: auto; padding-top: 16px; display: flex; align-items: center; gap: 6px;
  font-size: 13.5px; color: var(--silver);
}
.product-card__link i { font-size: 11px; transition: transform var(--tr); }
.product-card:hover .product-card__link { color: var(--blue-light); }
.product-card:hover .product-card__link i { transform: translateX(4px); }

/* ---------- 解决方案标签 ---------- */
.solution-tags { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.solution-tag {
  position: relative; min-height: 120px; padding: 26px 18px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 10px;
  overflow: hidden; transition: all var(--tr); cursor: pointer;
}
.solution-tag__icon { font-size: 26px; color: var(--silver); transition: color var(--tr); }
.solution-tag__name { font-size: 15px; font-weight: 600; color: var(--white); }
.solution-tag__need {
  position: absolute; inset: 0; padding: 18px 14px;
  background: rgba(26, 107, 176, 0.92); color: #fff; font-size: 12.5px; line-height: 1.65;
  display: flex; align-items: center; text-align: left;
  opacity: 0; transform: translateY(100%); transition: all 0.32s ease;
}
.solution-tag:hover { border-color: var(--blue); transform: translateY(-3px); }
.solution-tag:hover .solution-tag__icon { color: var(--blue-light); }
.solution-tag:hover .solution-tag__need { opacity: 1; transform: translateY(0); }

/* 解决方案行业图标：按位置映射（电力/工厂/实验室/新能源/铁路） */
.solution-tag:nth-child(1) .solution-tag__icon::before { content: "\f0e7"; } /* bolt */
.solution-tag:nth-child(2) .solution-tag__icon::before { content: "\f275"; } /* factory */
.solution-tag:nth-child(3) .solution-tag__icon::before { content: "\f0c3"; } /* flask */
.solution-tag:nth-child(4) .solution-tag__icon::before { content: "\f06c"; } /* leaf */
.solution-tag:nth-child(5) .solution-tag__icon::before { content: "\f238"; } /* train */

/* ---------- 检测场景全宽 ---------- */
.scene { position: relative; min-height: 480px; display: flex; align-items: center; overflow: hidden; }
.scene-swiper { position: absolute; inset: 0; }
.scene__slide { position: absolute; inset: 0; background-size: cover; background-position: center; }
.scene__overlay { position: absolute; inset: 0; background: rgba(13, 13, 16, 0.72); }
.scene__content { position: relative; z-index: 5; max-width: 620px; padding: 90px 0; }
.scene__title { font-size: 34px; font-weight: 700; color: var(--white); line-height: 1.3; }
.scene__title span { color: var(--blue-light); }
.scene__text { margin-top: 18px; color: var(--silver); font-size: 15px; line-height: 1.9; }
.scene__metrics { margin-top: 30px; display: flex; gap: 36px; }
.scene__metric { border-left: 2px solid var(--blue); padding-left: 14px; }
.scene__metric b { font-family: var(--font-mono); font-size: 24px; color: var(--white); display: block; }
.scene__metric span { font-size: 12.5px; color: var(--muted); }

/* ---------- 服务卡片 ---------- */
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.service-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 24px; text-align: center; transition: all var(--tr); position: relative; overflow: hidden;
}
.service-card::before {
  content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 0; height: 2px; background: var(--blue); transition: width 0.35s ease;
}
.service-card:hover { border-color: rgba(26, 107, 176, 0.55); transform: translateY(-3px); }
.service-card:hover::before { width: 100%; }
.service-card__icon {
  width: 60px; height: 60px; margin: 0 auto 18px; border-radius: 12px;
  background: rgba(26, 107, 176, 0.12); border: 1px solid rgba(26, 107, 176, 0.35);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--blue-light); transition: all var(--tr);
}
.service-card:hover .service-card__icon { background: var(--blue); color: #fff; box-shadow: var(--shadow-blue); }
.service-card__title { font-size: 16px; font-weight: 600; color: var(--white); }
.service-card__desc { margin-top: 10px; font-size: 13.5px; color: var(--muted); line-height: 1.7; }

/* ---------- 案例卡片 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: all var(--tr);
}
.case-card:hover { border-color: rgba(26, 107, 176, 0.55); transform: translateY(-4px); box-shadow: var(--shadow); }
.case-card__img { position: relative; height: 200px; overflow: hidden; }
.case-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.case-card:hover .case-card__img img { transform: scale(1.06); }
.case-card__img .case-card__tag {
  position: absolute; top: 12px; left: 12px; padding: 4px 10px;
  background: rgba(26, 107, 176, 0.92); color: #fff; font-size: 12px; border-radius: 3px;
}
.case-card__body { padding: 20px 22px 22px; }
.case-card__name { font-size: 16px; font-weight: 600; color: var(--white); }
.case-card__project { margin-top: 8px; font-size: 13.5px; color: var(--muted); display: flex; gap: 6px; }
.case-card__project i { color: var(--blue-light); margin-top: 3px; font-size: 12px; }
.case-card__desc { margin-top: 10px; font-size: 13px; color: var(--text-2); line-height: 1.7; }

/* ---------- 标准标签云 ---------- */
.std-cloud { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: center; }
.std-tag {
  font-family: var(--font-mono); padding: 12px 22px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--silver); font-size: 14px; letter-spacing: 0.05em;
  transition: all var(--tr); cursor: default;
}
.std-tag:hover { border-color: var(--blue); color: var(--blue-light); box-shadow: var(--shadow-blue); }
.std-tag--lg { font-size: 17px; padding: 14px 26px; color: var(--white); }
.std-tag--sm { font-size: 12px; padding: 9px 16px; }

/* ---------- 新闻列表 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.news-item {
  display: flex; gap: 18px; padding: 18px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  transition: all var(--tr);
}
.news-item:hover { border-color: rgba(26, 107, 176, 0.55); transform: translateY(-3px); }
.news-item__img { width: 112px; height: 84px; flex-shrink: 0; border-radius: var(--radius-sm); overflow: hidden; }
.news-item__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.news-item:hover .news-item__img img { transform: scale(1.08); }
.news-item__body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.news-item__title {
  font-size: 15px; font-weight: 600; color: var(--white); line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-item:hover .news-item__title { color: var(--blue-light); }
.news-item__meta { margin-top: auto; padding-top: 10px; display: flex; align-items: center; gap: 14px; font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); }

/* ---------- CTA ---------- */
.cta { position: relative; overflow: hidden; }
.cta__inner {
  position: relative; z-index: 2; max-width: 860px; margin: 0 auto; text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.3); border-radius: 10px;
  padding: 60px 40px; overflow: hidden;
  background:
    radial-gradient(ellipse at 80% 10%, rgba(255, 255, 255, 0.16), transparent 50%),
    linear-gradient(135deg, #1A6BB0 0%, #0F3D66 100%);
}
.cta__inner::before {
  content: ""; position: absolute; inset: 8px;
  border: 1px solid rgba(255, 255, 255, 0.22); border-radius: 6px; pointer-events: none;
}
.cta__title { font-size: 30px; font-weight: 700; color: var(--white); }
.cta__title span { color: rgba(255, 255, 255, 0.75); }
.cta__desc { margin-top: 14px; color: rgba(255, 255, 255, 0.88); font-size: 15px; }
.cta__actions { margin-top: 34px; display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.cta__actions .btn--primary { background: var(--white); color: var(--blue); border-color: var(--white); font-weight: 600; }
.cta__actions .btn--primary:hover { background: #E9EBF0; box-shadow: none; }
.cta__actions .btn--outline { border-color: rgba(255, 255, 255, 0.75); color: var(--white); }
.cta__actions .btn--outline:hover { border-color: var(--white); color: var(--white); background: rgba(255, 255, 255, 0.08); }
.cta__points { margin-top: 30px; display: flex; justify-content: center; gap: 28px; flex-wrap: wrap; position: relative; }
.cta__points span { display: flex; align-items: center; gap: 8px; color: rgba(255, 255, 255, 0.95); font-size: 13.5px; }
.cta__points i { color: var(--white); font-size: 12px; }

/* ---------- 内页 Banner ---------- */
.inner-banner { position: relative; padding: calc(var(--header-h) + 70px) 0 64px; overflow: hidden; }
.inner-banner__bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.inner-banner__bg::after { content: ""; position: absolute; inset: 0; background: rgba(13, 13, 16, 0.78); }
.inner-banner__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(26, 26, 26, 0.5) 0%, rgba(26, 26, 26, 0) 30%, rgba(26, 26, 26, 0.85) 100%);
}
.inner-banner__content { position: relative; z-index: 3; }
.inner-banner__title {
  font-size: 32px; font-weight: 700; color: var(--white); padding-left: 20px;
  border-left: 3px solid var(--blue);
}
.inner-banner__subtitle { margin-top: 12px; color: var(--silver); font-size: 15px; }

/* 面包屑 */
.breadcrumb-bar { border-bottom: 1px solid var(--border); background: var(--bg-2); }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; padding: 13px 0; font-size: 13px; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--blue-light); }
.breadcrumb i { font-size: 10px; margin: 0 10px; color: var(--border-light); }
.breadcrumb span { color: var(--silver); }

/* ---------- 内页布局 ---------- */
.page-wrap { display: flex; gap: 34px; align-items: flex-start; padding: 48px 0 70px; }
.sidebar { width: 248px; flex-shrink: 0; position: sticky; top: calc(var(--header-h) + 20px); }
.sidebar__head {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; margin-bottom: 14px; position: relative; overflow: hidden;
}
.sidebar__head::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--blue); }
.sidebar__head h3 { font-size: 18px; color: var(--white); }
.sidebar__head p { margin-top: 6px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; color: var(--muted); text-transform: uppercase; }
.sidebar__nav { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.sidebar__nav a {
  display: flex; align-items: center; gap: 10px; padding: 13px 20px;
  font-size: 14.5px; color: var(--text-2); border-bottom: 1px solid var(--border);
  transition: all var(--tr); position: relative;
}
.sidebar__nav a::before { content: ""; width: 4px; height: 4px; background: var(--border-light); border-radius: 50%; transition: all var(--tr); }
.sidebar__nav a:last-child { border-bottom: 0; }
.sidebar__nav a:hover { color: var(--white); background: rgba(26, 107, 176, 0.08); }
.sidebar__nav a:hover::before { background: var(--blue); box-shadow: 0 0 8px var(--blue); }
.sidebar__nav a.active { color: var(--blue-light); background: rgba(26, 107, 176, 0.12); }
.sidebar__nav a.active::before { background: var(--blue); }
.main-content { flex: 1; min-width: 0; }

/* 侧栏子栏目导航：PC 恒展开、无箭头；移动端默认收起、点击标题展开/收起
   无子栏目时（如客户案例/技术资料）整个导航隐藏、箭头也不显示 */
.sidebar__head-toggle { cursor: default; }
.sidebar__head-chevron { display: none; }
.sidebar__nav:not(:has(a)) { display: none; }
.sidebar__block:not(:has(.sidebar__nav a)) .sidebar__head-chevron { display: none; }

/* 侧栏底部咨询卡片 */
.sidebar__card {
  margin-top: 14px; padding: 22px;
  background: linear-gradient(160deg, var(--bg-card) 0%, var(--bg-2) 100%);
  border: 1px solid var(--border); border-radius: var(--radius);
  position: relative; overflow: hidden;
}
.sidebar__card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--blue), transparent 70%);
}
.sidebar__card-icon {
  width: 46px; height: 46px; border-radius: 10px;
  background: rgba(26, 107, 176, 0.14); border: 1px solid rgba(26, 107, 176, 0.4);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-light); font-size: 19px; margin-bottom: 14px;
}
.sidebar__card h4 { font-size: 15px; color: var(--white); }
.sidebar__card p { margin-top: 8px; font-size: 12.5px; color: var(--muted); line-height: 1.7; }
.sidebar__card .btn { margin-top: 14px; }
.sidebar__card-tel {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin-top: 10px; padding: 10px;
  font-family: var(--font-mono); font-size: 13px; color: var(--silver);
  border: 1px dashed var(--border-light); border-radius: var(--radius-sm);
  transition: all var(--tr);
}
.sidebar__card-tel:hover { border-color: var(--blue); color: var(--blue-light); }

/* 移动端技术咨询手风琴：侧栏卡片 / CTA 横幅
   PC 端恒展开、无箭头、标题不可点；移动端默认收起、点击标题展开 */
.sidebar__card-toggle, .cta__toggle {
  width: 100%; background: none; border: 0; padding: 0;
  font: inherit; color: inherit; cursor: default;
}
.sidebar__card-toggle { display: flex; align-items: center; gap: 12px; text-align: left; }
.sidebar__card-toggle .sidebar__card-icon { margin-bottom: 0; }
.sidebar__card-title { font-size: 15px; font-weight: 600; color: var(--white); }
.sidebar__card-chevron, .cta__chevron { display: none; }
.sidebar__card-body, .cta__body { display: block; }
.cta__toggle { display: flex; align-items: center; justify-content: center; gap: 12px; text-align: center; }

/* 列表页：主内容区内产品卡 3 列（侧栏 248px 后主区约 950px） */
.main-content .product-grid { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 1024px) { .main-content .product-grid { grid-template-columns: repeat(2, 1fr); } }

/* 列表网格 */
.list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* 分页（PBootCMS {page:bar} 结构：page-status / page-index / page-pre / page-numbar / page-next / page-last） */
.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 46px; flex-wrap: wrap; }
.pagination a, .pagination span {
  min-width: 38px; height: 38px; padding: 0 8px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; color: var(--text-2); transition: all var(--tr);
}
.pagination a:hover { border-color: var(--blue); color: var(--blue-light); }
.pagination span.current, .pagination a.page-num-current { background: var(--blue); border-color: var(--blue); color: #fff; }
/* 外层包裹 span 还原为无样式容器，按钮外观落在内部 a 上 */
.pagination .page-status {
  background: none; border: none; min-width: 0; height: auto; padding: 0 12px;
  color: var(--muted); font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em;
}
.pagination .page-index, .pagination .page-pre, .pagination .page-next,
.pagination .page-last, .pagination .page-numbar {
  background: none; border: none; min-width: 0; height: auto; padding: 0;
}
.pagination .page-numbar { display: inline-flex; gap: 8px; flex-wrap: wrap; }
.pagination a.page-num { min-width: 38px; }
.no-data { text-align: center; padding: 80px 20px; color: var(--muted); font-size: 15px; }
.no-data i { font-size: 34px; color: var(--border-light); margin-bottom: 16px; display: block; }
.no-data__btn { margin-top: 20px; }

/* ---------- 详情页 ---------- */
.detail { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px 44px; }
.detail__header { border-bottom: 1px solid var(--border); padding-bottom: 24px; margin-bottom: 30px; }
.detail__title { font-size: 28px; font-weight: 700; color: var(--white); }
.detail__meta { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 22px; font-size: 13px; color: var(--muted); }
.detail__meta i { color: var(--blue-light); margin-right: 6px; font-size: 12px; }
.detail__body { color: var(--text-2); font-size: 15px; line-height: 2; }
.detail__body img { border-radius: var(--radius); margin: 18px 0; }
.detail__body h3 { color: var(--white); font-size: 18px; margin: 26px 0 12px; }
.detail__body p { margin: 12px 0; }
.detail__body ul { padding-left: 20px; margin: 12px 0; }
.detail__body ul li { list-style: disc; margin: 6px 0; }

/* 产品详情 · 规格数据表 */
.spec-table { width: 100%; border-collapse: collapse; margin: 22px 0; }
.spec-table th, .spec-table td { padding: 13px 16px; text-align: left; border: 1px solid var(--border); font-size: 14px; }
.spec-table th { background: rgba(26, 107, 176, 0.1); color: var(--white); font-weight: 600; width: 140px; }
.spec-table td { color: var(--text-2); font-family: var(--font-mono); }
.spec-table tr:hover td { background: var(--bg-2); }

/* 详情页 · 相关产品 */
.related { margin-top: 46px; }
.related__head { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.related__head::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.related__head h3 { font-size: 18px; color: var(--white); white-space: nowrap; }
.related__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.related-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; display: flex; flex-direction: column; transition: all var(--tr);
}
.related-card:hover { border-color: rgba(26, 107, 176, 0.55); transform: translateY(-3px); }
.related-card__img { width: 100%; height: 96px; object-fit: cover; border-radius: var(--radius-sm); background: var(--bg-raised); }
.related-card__name { margin-top: 12px; font-size: 14px; font-weight: 600; color: var(--white); }
.related-card:hover .related-card__name { color: var(--blue-light); }
.related-card__range { margin-top: 6px; font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); }
@media (max-width: 768px) { .related__grid { grid-template-columns: 1fr 1fr; } }

/* 上一篇/下一篇（{content:precontent} / {content:nextcontent} 直接输出 <a>，标签用 span 前缀） */
.prev-next { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 40px; padding-top: 26px; border-top: 1px solid var(--border); }
.prev-next__item {
  display: flex; flex-direction: column; gap: 6px;
  padding: 16px 18px; background: var(--bg-2);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  transition: all var(--tr); min-width: 0;
}
.prev-next__item:hover { border-color: rgba(26, 107, 176, 0.55); }
.prev-next__item--next { text-align: right; }
.prev-next__label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.2em; color: var(--blue-light); text-transform: uppercase; }
.prev-next__item a { font-size: 14px; color: var(--text-2); display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.prev-next__item a:hover { color: var(--blue-light); }

/* ---------- 单页 / 表单 ---------- */
.page-body { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px 44px; color: var(--text-2); font-size: 15px; line-height: 2; }
.page-body img { border-radius: var(--radius); margin: 18px 0; }
.page-body h3 { color: var(--white); font-size: 18px; margin: 24px 0 10px; }
.page-body p { margin: 10px 0; }

.form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form__group { display: flex; flex-direction: column; }
.form__group--full { grid-column: 1 / -1; }
.form__label { font-size: 13px; color: var(--silver); margin-bottom: 8px; letter-spacing: 0.03em; }
.form__label i { color: var(--blue-light); margin-right: 6px; font-size: 11px; }
.form__input, .form__textarea {
  width: 100%; padding: 12px 14px;
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); outline: none; transition: border-color var(--tr);
}
.form__input:focus, .form__textarea:focus { border-color: var(--blue); }
.form__textarea { min-height: 130px; resize: vertical; }
.form__code { display: flex; gap: 12px; align-items: center; }
.form__code img { border-radius: var(--radius-sm); cursor: pointer; height: 42px; width: 110px; object-fit: cover; }
.form__submit { grid-column: 1 / -1; display: flex; gap: 14px; align-items: center; }
.form__notice { font-size: 12.5px; color: var(--muted); }

/* ---------- 联系信息卡片 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 34px; }
.contact-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 22px; text-align: center; transition: all var(--tr);
}
.contact-card:hover { border-color: rgba(26, 107, 176, 0.55); transform: translateY(-3px); }
.contact-card__icon { width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 10px; background: rgba(26, 107, 176, 0.12); border: 1px solid rgba(26, 107, 176, 0.35); display: flex; align-items: center; justify-content: center; color: var(--blue-light); font-size: 20px; }
.contact-card__label { font-size: 13px; color: var(--muted); }
.contact-card__value { margin-top: 6px; font-size: 15px; color: var(--white); font-weight: 500; word-break: break-all; }

/* 联系页 · 留言表单卡片 */
.contact-form-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 30px; position: relative; overflow: hidden;
}
.contact-form-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--blue), transparent 70%);
}

/* ---------- 底部 ---------- */
.footer { background: #141416; border-top: 1px solid var(--border); position: relative; }
.footer__top-line { height: 2px; background: linear-gradient(90deg, var(--blue), transparent 60%); }
.footer__grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1.2fr 1fr; gap: 40px;
  padding: 58px 0 44px;
}
.footer__brand-name { font-size: 18px; font-weight: 700; color: var(--white); display: flex; align-items: center; gap: 12px; }
.footer__brand-desc { margin-top: 16px; font-size: 13.5px; color: var(--muted); line-height: 1.9; max-width: 320px; }
.footer__badges { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.footer__badge { font-family: var(--font-mono); font-size: 11px; padding: 5px 10px; border: 1px solid var(--border); border-radius: 3px; color: var(--silver); }
.footer__col-title {
  font-size: 15px; font-weight: 600; color: var(--white); margin-bottom: 20px;
  padding-bottom: 12px; position: relative;
}
.footer__col-title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--blue); }
.footer__links { display: flex; flex-direction: column; gap: 11px; }
.footer__links a { font-size: 14px; color: var(--text-2); display: inline-flex; align-items: center; gap: 8px; }
.footer__links a::before { content: ""; width: 4px; height: 4px; background: var(--blue); border-radius: 50%; }
.footer__links a:hover { color: var(--blue-light); transform: translateX(3px); }
.footer__contact-item { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 14px; font-size: 13.5px; color: var(--text-2); }
.footer__contact-item i { color: var(--blue-light); margin-top: 4px; font-size: 13px; width: 16px; }
.footer__qr { display: flex; align-items: center; gap: 14px; }
.footer__qr-box { width: 108px; height: 108px; background: #fff; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 11px; color: #666; text-align: center; padding: 6px; }
.footer__qr-box img { width: 100%; height: 100%; object-fit: contain; border-radius: 4px; }
.footer__qr-text { font-size: 12.5px; color: var(--muted); line-height: 1.8; }

/* 友情链接 */
.friend-links { border-top: 1px solid var(--border); padding: 22px 0; display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center; }
.friend-links__label { font-size: 13px; color: var(--muted); }
.friend-links a { font-size: 13px; color: var(--text-2); }
.friend-links a:hover { color: var(--blue-light); }

/* 底部版权 */
.footer__bottom { border-top: 1px solid var(--border); padding: 18px 0; }
.footer__bottom-inner { display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.footer__bottom-inner a { color: var(--muted); }
.footer__bottom-inner a:hover { color: var(--blue-light); }

/* ---------- 悬浮元素 ---------- */
.online-service, .back-top {
  position: fixed; right: 24px; width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  z-index: var(--z-fixed); font-size: 18px; color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2); box-shadow: var(--shadow);
  transition: all var(--tr);
}
.online-service { bottom: 96px; background: var(--blue); }
.online-service:hover { background: var(--blue-light); transform: scale(1.08); }
.online-service::after {
  content: ""; position: absolute; inset: -6px; border-radius: 50%;
  border: 2px solid var(--blue); opacity: 0; animation: pulseRing 2.2s ease-out infinite;
}
@keyframes pulseRing { 0% { transform: scale(0.9); opacity: 0.7; } 100% { transform: scale(1.5); opacity: 0; } }
.back-top { bottom: 24px; background: var(--bg-raised); opacity: 0; visibility: hidden; }
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--blue); }

/* 懒加载过渡 */
.lazy-img { opacity: 0; transition: opacity 0.5s ease; background: var(--bg-raised); }
.lazy-img.loaded { opacity: 1; }

/* 通用列表（左图右文） */
.list-rows { display: flex; flex-direction: column; gap: 18px; }
.list-row {
  display: flex; gap: 22px; padding: 20px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  transition: all var(--tr);
}
.list-row:hover { border-color: rgba(26, 107, 176, 0.55); transform: translateY(-2px); }
.list-row__img { width: 220px; height: 140px; flex-shrink: 0; border-radius: var(--radius-sm); overflow: hidden; }
.list-row__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.list-row:hover .list-row__img img { transform: scale(1.05); }
.list-row__body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.list-row__title { font-size: 17px; font-weight: 600; color: var(--white); }
.list-row:hover .list-row__title { color: var(--blue-light); }
.list-row__meta { margin-top: 10px; display: flex; gap: 18px; font-family: var(--font-mono); font-size: 12px; color: var(--muted); }
.list-row__desc { margin-top: 10px; font-size: 13.5px; color: var(--text-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.list-row__more { margin-top: auto; padding-top: 12px; font-size: 13px; color: var(--blue-light); display: inline-flex; align-items: center; gap: 6px; }
.list-row__more i { font-size: 11px; }

/* 搜索框 */
.search-form { display: flex; max-width: 640px; margin: 0 auto 46px; }
.search-form__input {
  flex: 1; padding: 14px 18px; background: var(--bg-card);
  border: 1px solid var(--border); border-right: 0; border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  color: var(--text); outline: none; font-size: 15px;
}
.search-form__input:focus { border-color: var(--blue); }
.search-form__btn {
  padding: 0 28px; background: var(--blue); color: #fff; border: 1px solid var(--blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: 15px; transition: background var(--tr);
}
.search-form__btn:hover { background: var(--blue-light); }

/* 步骤条（校准服务流程） */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step-card {
  position: relative; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 22px; text-align: center;
}
.step-card__num {
  width: 44px; height: 44px; margin: 0 auto 16px; border-radius: 50%;
  background: rgba(26, 107, 176, 0.14); border: 1px solid rgba(26, 107, 176, 0.4);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 17px; font-weight: 700; color: var(--blue-light);
}
.step-card__title { font-size: 15px; font-weight: 600; color: var(--white); }
.step-card__desc { margin-top: 8px; font-size: 13px; color: var(--muted); }

/* 资质/荣誉 */
.honor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.honor-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; text-align: center; transition: all var(--tr);
}
.honor-card:hover { border-color: rgba(26, 107, 176, 0.55); transform: translateY(-3px); }
.honor-card__icon { font-size: 34px; color: var(--blue-light); margin-bottom: 14px; }
.honor-card__title { font-size: 16px; font-weight: 600; color: var(--white); }
.honor-card__desc { margin-top: 8px; font-size: 13px; color: var(--muted); }

/* 两栏布局（关于我们等） */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split__img { position: relative; border-radius: var(--radius); overflow: hidden; }
.split__img img { width: 100%; height: 100%; object-fit: cover; }
.split__img::after {
  content: ""; position: absolute; inset: 0;
  border: 1px solid rgba(26, 107, 176, 0.3); border-radius: var(--radius); pointer-events: none;
}
.split__badge {
  position: absolute; bottom: -16px; right: 20px;
  background: var(--blue); color: #fff; padding: 12px 22px; border-radius: var(--radius);
  font-family: var(--font-mono); font-size: 13px; box-shadow: var(--shadow-blue);
}
.split__content h2 { font-size: 30px; color: var(--white); }
.split__content p { margin-top: 18px; color: var(--text-2); font-size: 15px; line-height: 2; }
.split__points { margin-top: 24px; display: flex; flex-direction: column; gap: 14px; }
.split__points li { display: flex; gap: 12px; color: var(--text-2); font-size: 14.5px; }
.split__points li i { color: var(--blue-light); margin-top: 4px; font-size: 13px; }

/* 联系页版式：左文右表单（列宽放类里而非内联，否则移动端媒体查询无法覆盖） */
.split--contact { grid-template-columns: 1.15fr 1fr; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .header__nav, .header__cta { display: none; }
  .hamburger { display: flex; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .page-wrap { flex-direction: column; }
  .sidebar { width: 100%; position: static; }
  .sidebar__nav { display: flex; flex-wrap: wrap; }
  .sidebar__nav a { flex: 1 1 50%; }
  .list-grid { grid-template-columns: repeat(2, 1fr); }

  /* 技术咨询手风琴：移动/平板布局下默认收起，点击标题展开/收起
     （与上方 .sidebar 转堆叠布局的断点保持一致，覆盖 769-1024px 区间） */
  .sidebar__card-toggle, .cta__toggle { cursor: pointer; }
  .sidebar__card-chevron, .cta__chevron { display: inline-block; transition: transform var(--tr); }
  .sidebar__card-body { display: none; }
  .sidebar__card.open .sidebar__card-body { display: block; }
  .sidebar__card.open .sidebar__card-chevron { transform: rotate(180deg); }
  .cta__body { display: none; }
  .cta__inner.open .cta__body { display: block; }
  .cta__inner.open .cta__chevron { transform: rotate(180deg); }
  .cta__inner.js-mobile-accordion { padding: 26px 20px; }
  .cta__inner.js-mobile-accordion.open { padding: 34px 24px; }
  .cta__inner.js-mobile-accordion .cta__title { font-size: 20px; }

  /* 侧栏子栏目导航：默认收起，点击标题行展开/收起 */
  .sidebar__head-toggle { display: flex; align-items: center; justify-content: space-between; gap: 10px; cursor: pointer; }
  .sidebar__head-chevron { display: inline-block; transition: transform var(--tr); }
  .sidebar__nav { display: none; }
  .js-sidebar-nav.open .sidebar__nav { display: block; }
  .js-sidebar-nav.open .sidebar__head-chevron { transform: rotate(180deg); }

  /* 解决方案列表：移动端一行两列（覆盖通用 list-row 左图右文全宽行，仅作用于解决方案页面） */
  .list-rows--solutions { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .list-rows--solutions .list-row { flex-direction: column; gap: 10px; padding: 14px; }
  .list-rows--solutions .list-row__img { width: 100%; height: auto; aspect-ratio: 16 / 10; }
  .list-rows--solutions .list-row__title { font-size: 14px; }
  .list-rows--solutions .list-row__meta { display: none; }
  .list-rows--solutions .list-row__desc { margin-top: 6px; font-size: 12px; -webkit-line-clamp: 1; }
  .list-rows--solutions .list-row__more { padding-top: 6px; font-size: 12px; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-title { font-size: 26px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .solution-tags { grid-template-columns: repeat(2, 1fr); } /* ccc: 标签式排列改为2列 */
  .service-grid { grid-template-columns: repeat(4, 1fr); gap: 12px; }
  .case-grid { grid-template-columns: 1fr; }

  /* 应用实景（客户案例卡）：移动端图片缩小、卡片紧凑 */
  .case-card__img { height: 150px; }
  .case-card__body { padding: 16px 18px 18px; }
  .news-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .form { grid-template-columns: 1fr; }
  .form__submit { flex-wrap: wrap; }
  .scene__metrics { flex-wrap: wrap; gap: 20px; }

  /* 检测现场：移动端压缩高度与内容间距（图片变小、内容更紧凑） */
  .scene { min-height: 340px; }
  .scene__content { padding: 52px 0; }
  .scene__title { font-size: 26px; }
  .scene__text { margin-top: 12px; font-size: 13.5px; line-height: 1.8; }
  .scene__metrics { margin-top: 18px; gap: 18px; }
  .scene__metric b { font-size: 18px; }
  .scene__metric span { font-size: 12px; }
  .list-row__img { width: 150px; height: 100px; }

  /* 底部快速链接：移动端横向一行（自动换行），不再纵向堆叠 */
  .footer__links { flex-direction: row; flex-wrap: wrap; gap: 8px 24px; }

  /* 联系信息卡：移动端整体缩小（图标/内边距/字号） */
  .contact-card { padding: 16px 12px; }
  .contact-card__icon { width: 38px; height: 38px; margin-bottom: 8px; font-size: 15px; border-radius: 8px; }
  .contact-card__label { font-size: 12px; }
  .contact-card__value { margin-top: 4px; font-size: 13px; }
  .detail, .page-body { padding: 28px 22px; }
  .hero__content { padding-top: 120px; }
  .hero__title { font-size: 34px; }
  .hero__subtitle { font-size: 16px; }
}

@media (max-width: 480px) {
  .product-grid { grid-template-columns: 1fr; }

  /* 首页核心产品：仅首页手机端一行两个（4个产品），卡片紧凑 */
  .product-grid--home { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .product-grid--home .product-card { padding: 16px 14px 14px; }
  .product-grid--home .product-card__ico { height: 90px; margin: 12px 0 10px; }
  .product-grid--home .product-card__acc { font-size: 20px; }
  .product-grid--home .product-card__name { font-size: 13.5px; }
  .product-grid--home .product-card__range { margin-top: 6px; font-size: 11px; }
  .product-grid--home .product-card__link { padding-top: 10px; font-size: 12px; }

  .stats { grid-template-columns: 1fr 1fr; gap: 12px; }

  /* 精度数据四框：手机端缩小 */
  .stat-item { padding: 20px 14px; }
  .stat-item__num { font-size: 26px; }
  .stat-item__num .u { font-size: 15px; }
  .stat-item__label { margin-top: 8px; font-size: 12px; }
  .stat-item__data { margin-top: 5px; font-size: 11px; }
  .steps { grid-template-columns: 1fr; }

  /* 权威检测标准：手机端两行（标签紧凑，flex 换行不重叠） */
  .std-cloud { display: flex; flex-wrap: wrap; gap: 4px; justify-content: center; }
  .std-tag, .std-tag--lg, .std-tag--sm { font-size: 9px; padding: 3px 4px; white-space: nowrap; }

  /* 校准服务四卡：手机端一行四个（紧凑：小图标+标题，隐藏描述） */
  .service-grid { grid-template-columns: repeat(4, 1fr); gap: 10px; }
  .service-card { padding: 14px 6px; }
  .service-card__icon { width: 40px; height: 40px; margin: 0 auto 8px; font-size: 16px; border-radius: 8px; }
  .service-card__title { font-size: 12.5px; }
  .service-card__desc { display: none; }
  .list-row { flex-direction: column; }
  .list-row__img { width: 100%; height: 180px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { justify-content: center; }
  .cta__actions { flex-direction: column; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .pagination a, .pagination span { min-width: 34px; height: 34px; }
  .container { padding: 0 16px; }
  .prev-next { flex-direction: column; }
  .prev-next a { max-width: 100%; }
}

/* 减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}