/**
 * 精工精密机械 — 企业官网主题样式
 * 暗色工业风：深灰基底 + 科技银边框 + 蓝色强调
 * 精密感：小圆角、等宽数据字体、细线图标
 * 字体：Inter (Latin) + Noto Sans SC (中文) + JetBrains Mono (数据)
 * 技术栈：原生CSS变量 + Swiper + AOS动画 + FA6图标
 */

/* Google Fonts */


/* ============================================================
   CSS 变量体系 — 精密工业暗色主题
   ============================================================ */
:root {
  /* 基底色 */
  --bg-deep: #0D0D0D;
  --bg-primary: #1A1A1A;
  --bg-secondary: #141414;
  --bg-card: #1E1E1E;
  --bg-card-hover: #252525;
  --bg-input: #1A1A1A;

  /* 品牌色 */
  --brand-blue: #1A6BB0;
  --brand-blue-light: #2080CC;
  --brand-blue-dim: rgba(26, 107, 176, 0.15);
  --brand-blue-glow: rgba(26, 107, 176, 0.3);

  /* 科技银 / 灰色阶 */
  --silver: #C0C0C0;
  --silver-dim: rgba(192, 192, 192, 0.1);
  --silver-border: rgba(192, 192, 192, 0.2);

  /* 文字色阶 */
  --text-primary: #E8ECF1;
  --text-secondary: #9BA3AF;
  --text-muted: #5A6270;
  --text-white: #FFFFFF;

  /* 边框 */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-card: rgba(192, 192, 192, 0.12);
  --border-active: rgba(26, 107, 176, 0.4);

  /* 阴影 & 发光 */
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.5);
  --shadow-card-hover: 0 4px 28px rgba(0, 0, 0, 0.7);
  --shadow-blue-glow: 0 0 20px rgba(26, 107, 176, 0.15);

  /* 圆角 — 精密小圆角 */
  --radius-xs: 3px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* 间距 */
  --section-py: 90px;
  --section-py-sm: 60px;
  --container-max: 1240px;
  --header-h: 72px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* 字体 — Inter + Noto Sans SC */
  --font-heading: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* ============================================================
   全局重置
   ============================================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  background: var(--bg-deep);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection { background: var(--brand-blue); color: #fff; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}
a:hover { color: var(--brand-blue-light); }

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol { list-style: none; }

input, textarea, select, button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  outline: none;
}
button { cursor: pointer; background: none; }

/* ============================================================
   工具类
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-py) 0;
}
.section-sm { padding: var(--section-py-sm) 0; }

/* 区块标签 */
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--brand-blue-light);
  border: 1px solid var(--brand-blue-dim);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
}

/* 区块标题 */
.section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.3;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.7;
}

/* 数据等宽字体 */
.font-mono { font-family: var(--font-mono); }

/* 分割线 */
.divider {
  width: 60px;
  height: 2px;
  background: var(--brand-blue);
  margin: 16px 0 24px;
}

/* 按钮系统 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--brand-blue);
  color: #fff;
  border: 1px solid var(--brand-blue);
}
.btn--primary:hover {
  background: var(--brand-blue-light);
  border-color: var(--brand-blue-light);
  color: #fff;
  box-shadow: var(--shadow-blue-glow);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--silver-border);
}
.btn--outline:hover {
  border-color: var(--brand-blue);
  color: var(--brand-blue-light);
  background: var(--brand-blue-dim);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}
.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-card);
}

.btn--sm { padding: 8px 16px; font-size: 0.8125rem; }
.btn--lg { padding: 15px 32px; font-size: 1rem; }

/* 脉冲按钮 (CTA) */
@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(26, 107, 176, 0.4); }
  70% { box-shadow: 0 0 0 12px rgba(26, 107, 176, 0); }
  100% { box-shadow: 0 0 0 0 rgba(26, 107, 176, 0); }
}
.btn--pulse {
  animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ============================================================
   Header — 深色固定导航
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--duration-normal) var(--ease-out);
}
.header.scrolled {
  background: rgba(13, 13, 13, 0.98);
  border-bottom-color: var(--border-card);
}

.header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.header__logo-icon {
  width: 40px;
  height: 40px;
  background: var(--brand-blue);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: #fff;
}
.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
}
.header__logo-sub {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--silver);
  font-family: var(--font-mono);
}

/* 主导航 */
.header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.header__nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}
.header__nav-link:hover,
.header__nav-link.active {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.04);
}

/* 导航下拉 */
.header__nav-item { position: relative; }
.header__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  min-width: 180px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 6px 0;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-fast) var(--ease-out);
  z-index: 60;
  box-shadow: var(--shadow-card);
}
.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.header__dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: all var(--duration-fast);
}
.header__dropdown a:hover {
  background: var(--brand-blue-dim);
  color: var(--text-primary);
}

/* Header 右侧操作区 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  background: var(--brand-blue);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  transition: all var(--duration-fast) var(--ease-out);
}
.header__cta:hover {
  background: var(--brand-blue-light);
  color: #fff;
  box-shadow: var(--shadow-blue-glow);
}

/* ============================================================
   汉堡菜单 (13.4: 独立于 header__actions)
   ============================================================ */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  z-index: 101;
  border-radius: var(--radius-sm);
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   移动端侧滑菜单
   ============================================================ */
.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 300px;
  max-width: 80vw;
  background: var(--bg-primary);
  border-left: 1px solid var(--border-card);
  z-index: 200;
  transform: translateX(100%);
  transition: transform var(--duration-normal) var(--ease-out);
  overflow-y: auto;
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav__inner { padding: 24px; }
.mobile-nav__link {
  display: block;
  padding: 14px 16px;
  font-size: 1rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}
.mobile-nav__link:hover,
.mobile-nav__link.active { color: var(--text-primary); background: rgba(255,255,255,0.03); }
.mobile-nav__sub {
  display: none;
  padding-left: 16px;
  margin-bottom: 8px;
}
.mobile-nav__sub.open { display: block; }
.mobile-nav__sub a {
  display: block;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
}
.mobile-nav__sub a:hover { color: var(--text-primary); background: rgba(255,255,255,0.03); }

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 199;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal);
}
.mobile-nav__overlay.show { opacity: 1; visibility: visible; }

/* ============================================================
   Hero Banner
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 900px;
  overflow: hidden;
  background: var(--bg-deep);
}

.hero-swiper {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero__slide {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transform: scale(1.05);
  transition: transform 6s ease-out;
}
.swiper-slide-active .hero__slide { transform: scale(1); }

/* 遮罩 */
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(13,13,13,0.55) 0%,
    rgba(13,13,13,0.35) 40%,
    rgba(13,13,13,0.7) 100%);
  z-index: 2;
}

/* 网格线背景 (精密工业感) */
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(26,107,176,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,107,176,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.5;
}

/* Hero 文字 */
.hero__content {
  position: absolute;
  bottom: 18%;
  left: 0;
  right: 0;
  z-index: 3;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.2;
  margin-bottom: 16px;
  max-width: 720px;
  letter-spacing: -0.01em;
}
.hero__title span { color: var(--brand-blue-light); }

.hero__subtitle {
  font-size: clamp(0.95rem, 1.5vw, 1.2rem);
  color: var(--silver);
  margin-bottom: 32px;
  max-width: 560px;
  line-height: 1.6;
  opacity: 0.85;
}

.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Swiper 会给 .swiper-pagination-horizontal 加上 left:0 + width:100%，
   与本来的 left:50% + translateX(-50%) 叠加后整条指示器被推到左边屏幕外。
   这里改用左右贴边 + justify-content:center 居中，特异性也压过 Swiper。 */
.hero .hero-pagination {
  position: absolute;
  bottom: 6%;
  left: 0;
  right: 0;
  width: auto;
  transform: none;
  z-index: 5;
  display: flex;
  justify-content: center;
  gap: 8px;
}
.hero-pagination .swiper-pagination-bullet {
  width: 40px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,0.3);
  opacity: 1;
  transition: all var(--duration-normal);
}
.hero-pagination .swiper-pagination-bullet-active {
  background: var(--brand-blue);
  width: 60px;
}

/* 滚动指示器 */
.hero__scroll {
  position: absolute;
  bottom: 40px;
  right: 40px;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.hero__scroll span {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
}
.hero__scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--silver), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}
@keyframes scroll-line {
  0%, 100% { transform: scaleY(1); opacity: 0.5; }
  50% { transform: scaleY(0.3); opacity: 0.1; }
}

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 320px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.inner-banner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.inner-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,13,13,0.5), rgba(13,13,13,0.85));
  z-index: 1;
}
.inner-banner__content {
  position: relative;
  z-index: 2;
  padding: 0 24px;
}
.inner-banner__title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}
.inner-banner__subtitle {
  font-size: 1rem;
  color: var(--silver);
  opacity: 0.8;
}

/* 面包屑 */
.breadcrumb-bar {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
}
.breadcrumb {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 12px 24px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--brand-blue-light); }
.breadcrumb .fa-solid { font-size: 0.6rem; margin: 0 6px; }

/* ============================================================
   数据精度条 (数字滚动区)
   ============================================================ */
.stats-section {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  text-align: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
.stat-item {
  padding: 40px 20px;
  position: relative;
}
.stat-item::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: var(--border-subtle);
}
.stat-item:last-child::after { display: none; }
.stat-item__number {
  font-family: var(--font-mono);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--brand-blue-light);
  line-height: 1.1;
  margin-bottom: 8px;
}
.stat-item__unit {
  font-size: 1.4rem;
  color: var(--brand-blue);
  font-weight: 500;
}
.stat-item__label {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ============================================================
   Section 暗色背景交替
   ============================================================ */
.section--alt {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

/* Header 行 (标题 + 查看更多) */
.section__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 16px;
}

/* ============================================================
   卡片系统
   ============================================================ */
/* 基础卡片 */
.card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-active);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-secondary);
}
.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}
.card:hover .card__image img { transform: scale(1.05); }
.card__body { padding: 18px 20px; }
.card__tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--brand-blue-light);
  font-family: var(--font-mono);
  margin-bottom: 6px;
}
.card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 10px;
}
.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.card__meta .fa-solid { color: var(--brand-blue); font-size: 0.7rem; margin-right: 3px; }

/* 产品分类卡片(大) */
.card--category {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  display: block;
}
.card--category:hover {
  border-color: var(--brand-blue);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-blue-glow);
  transform: translateY(-2px);
}
.card--category__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--brand-blue-dim);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--brand-blue-light);
}
.card--category__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.card--category__desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ============================================================
   列表网格
   ============================================================ */
.list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.list-grid--4 { grid-template-columns: repeat(4, 1fr); }
.list-grid--2 { grid-template-columns: repeat(2, 1fr); }

/* ============================================================
   产品详情
   ============================================================ */
.detail { max-width: 900px; margin: 0 auto; }
.detail__header { margin: 28px 0 20px; }
.detail__title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 12px;
}
.detail__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.detail__meta-row .fa-solid,
.detail__meta-row .fa-regular { margin-right: 4px; color: var(--brand-blue); }

.detail__params {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 32px;
}
.detail__param {
  background: var(--bg-card);
  padding: 20px 18px;
  text-align: center;
}
.detail__param-label {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-family: var(--font-mono);
}
.detail__param-value {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
}

.detail__body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.9;
}
.detail__body h2 { font-size: 1.4rem; margin: 32px 0 12px; color: var(--text-primary); }
.detail__body h3 { font-size: 1.15rem; margin: 24px 0 10px; color: var(--text-primary); }
.detail__body p { margin-bottom: 14px; }
.detail__body img { border-radius: var(--radius-sm); margin: 20px 0; }
.detail__body table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.875rem;
}
.detail__body table th,
.detail__body table td {
  border: 1px solid var(--border-card);
  padding: 12px 14px;
  text-align: left;
}
.detail__body table th {
  background: var(--brand-blue-dim);
  color: var(--brand-blue-light);
  font-weight: 600;
  font-family: var(--font-mono);
}
.detail__body table td {
  font-family: var(--font-mono);
}

.detail__pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  margin-top: 40px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}
.detail__pager a {
  color: var(--brand-blue-light);
  font-weight: 500;
}

/* 关联内容标题 */
.related-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--text-primary);
  margin: 48px 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ============================================================
   新闻列表项
   ============================================================ */
.news-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--duration-fast);
}
.news-item:hover { border-bottom-color: var(--border-active); }
.news-item__thumb {
  width: 200px;
  min-width: 200px;
  aspect-ratio: 16/10;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-secondary);
}
.news-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-out);
}
.news-item:hover .news-item__thumb img { transform: scale(1.05); }
.news-item__info { flex: 1; }
.news-item__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}
.news-item__date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-family: var(--font-mono);
}
.news-item__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   新闻详情页
   ============================================================ */
.news-detail { max-width: 800px; margin: 0 auto; }

/* ============================================================
   分页
   ============================================================ */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.pagination a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}
.pagination a:hover,
.pagination a.active {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  color: #fff;
}
.pagination .fa-solid { font-size: 0.7rem; }

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state .fa-solid { font-size: 2.5rem; margin-bottom: 16px; opacity: 0.3; }
.empty-state p { font-size: 1rem; }

/* ============================================================
   子栏目过滤栏
   ============================================================ */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.filter-bar a {
  display: inline-block;
  padding: 12px 22px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: all var(--duration-fast);
}
.filter-bar a:hover,
.filter-bar a.active {
  color: var(--text-primary);
  border-bottom-color: var(--brand-blue);
}

/* ============================================================
   联系我们
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info__item {
  display: flex;
  gap: 14px;
  margin-bottom: 24px;
}
.contact-info__icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--brand-blue-dim);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--brand-blue-light);
}
.contact-info__label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 2px;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}
.contact-info__value {
  font-size: 0.95rem;
  color: var(--text-primary);
}

/* 表单卡片 */
.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.required { color: #E74C3C; }
.form-control {
  width: 100%;
  padding: 12px 14px;
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}
.form-control:focus { border-color: var(--brand-blue); box-shadow: 0 0 0 3px var(--brand-blue-dim); }
.form-control::placeholder { color: var(--text-muted); }
select.form-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%239BA3AF' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 14px;
  padding-right: 36px;
}
textarea.form-control { resize: vertical; min-height: 100px; }

/* 搜索结果 */
.search-box { padding: 32px 0; }
.search-form-row { display: flex; gap: 12px; max-width: 560px; margin: 0 auto; }
.search-input-wrap {
  flex: 1;
  position: relative;
}
.search-input-wrap .fa-solid {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}
.search-input-wrap input {
  width: 100%;
  padding: 13px 14px 13px 40px;
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
}
.search-input-wrap input:focus { border-color: var(--brand-blue); }

.search-result-item {
  display: flex;
  gap: 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--duration-fast);
  cursor: pointer;
}
.search-result-item:hover { border-bottom-color: var(--border-active); }
.search-result-item__thumb {
  width: 120px;
  min-width: 120px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-secondary);
}
.search-result-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.search-result-item__info { flex: 1; }
.search-result-item__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.search-result-item__date { font-size: 0.75rem; color: var(--text-muted); }
.search-result-item__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   设备/能力展示网格
   ============================================================ */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.capability-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  gap: 18px;
  transition: all var(--duration-normal);
}
.capability-card:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-card);
}
.capability-card__icon {
  width: 52px;
  height: 52px;
  min-width: 52px;
  background: var(--brand-blue-dim);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--brand-blue-light);
}
.capability-card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.capability-card__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.capability-card__spec {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--brand-blue-light);
  font-family: var(--font-mono);
}

/* ============================================================
   检测品质图标网格
   ============================================================ */
.quality-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.quality-card {
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 32px 20px;
  transition: all var(--duration-normal);
}
.quality-card:hover {
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-blue-glow);
}
.quality-card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: var(--brand-blue-dim);
  border: 1px solid var(--border-active);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--brand-blue-light);
}
.quality-card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.quality-card__spec {
  font-size: 0.85rem;
  color: var(--brand-blue-light);
  font-family: var(--font-mono);
}

/* ============================================================
   CTA 区块
   ============================================================ */
.cta-section {
  background: var(--bg-primary);
  border: 1px solid var(--border-card);
  border-left: none;
  border-right: none;
  padding: 80px 0;
  text-align: center;
}
.cta-section__title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-card);
}
.footer__grid {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 56px 24px 36px;
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr 1fr;
  gap: 40px;
}
.footer__brand-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 14px 0 18px;
}
.footer__social {
  display: flex;
  gap: 10px;
}
.footer__social a,
.footer__social span {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: all var(--duration-fast);
  cursor: default;
}
.footer__social a {
  cursor: pointer;
}
.footer__social a:hover {
  border-color: var(--brand-blue);
  color: var(--brand-blue-light);
  background: var(--brand-blue-dim);
}

.footer__col-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}
.footer__links a {
  display: block;
  padding: 6px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: all var(--duration-fast);
}
.footer__links a:hover { color: var(--brand-blue-light); }

.footer__contact-item {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.footer__contact-item .fa-solid,
.footer__contact-item .fa-regular {
  color: var(--brand-blue);
  font-size: 0.8rem;
  margin-top: 3px;
  min-width: 14px;
}

.footer__qrcode {
  width: 100px;
  height: 100px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

/* 友情链接 */
.friend-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 20px 0;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
}
.friend-links__label {
  color: var(--text-muted);
  flex-shrink: 0;
}
.friend-links a {
  color: var(--text-muted);
  transition: color var(--duration-fast);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}
.friend-links a:hover { color: var(--brand-blue-light); }

/* Footer 底栏 */
.footer__bottom {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-subtle);
  padding: 18px 0;
}
.footer__bottom-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 10px;
}
.footer__bottom-inner a { color: var(--text-muted); }
.footer__bottom-inner a:hover { color: var(--brand-blue-light); }

/* ============================================================
   返回顶部
   ============================================================ */
.back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--brand-blue);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(26, 107, 176, 0.3);
}
.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover {
  background: var(--brand-blue-light);
  transform: translateY(-2px);
}

/* ============================================================
   在线客服
   ============================================================ */
.online-service {
  position: fixed;
  bottom: 84px;
  right: 28px;
  width: 48px;
  height: 48px;
  background: var(--brand-blue);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  z-index: 90;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(26, 107, 176, 0.4);
  transition: all var(--duration-normal) var(--ease-out);
  animation: float 3s ease-in-out infinite;
}
.online-service:hover {
  background: var(--brand-blue-light);
  transform: scale(1.1);
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ============================================================
   Tab 切换 (产品详情)
   ============================================================ */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-card);
  margin-bottom: 28px;
}
.tab-btn {
  padding: 12px 24px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: all var(--duration-fast);
  cursor: pointer;
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
  color: var(--brand-blue-light);
  border-bottom-color: var(--brand-blue);
}
.tab-panel { display: none; }
.tab-panel:not(.hidden) { display: block; }

/* ============================================================
   技术参数表
   ============================================================ */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.spec-table tr { border-bottom: 1px solid var(--border-subtle); }
.spec-table td {
  padding: 14px 16px;
  color: var(--text-secondary);
}
.spec-table td:first-child {
  width: 160px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}
.spec-table td:last-child {
  color: var(--text-primary);
  font-family: var(--font-mono);
}

/* ============================================================
   下载卡片 (技术资料)
   ============================================================ */
.download-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: all var(--duration-normal);
  cursor: pointer;
}
.download-card:hover {
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-blue-glow);
}
.download-card__icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: var(--brand-blue-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--brand-blue-light);
}
.download-card__name {
  flex: 1;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}
.download-card__size {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ============================================================
   经销商卡片
   ============================================================ */
.dealer-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}
.dealer-feature {
  text-align: center;
  padding: 28px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
}
.dealer-feature__icon {
  width: 50px;
  height: 50px;
  margin: 0 auto 14px;
  background: var(--brand-blue-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--brand-blue-light);
}
.dealer-feature__title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.dealer-feature__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ============================================================
   图片懒加载过渡
   ============================================================ */
img[data-src] {
  opacity: 0;
  transition: opacity 0.4s var(--ease-out);
}
img.loaded { opacity: 1; }

/* ============================================================
   动画增强
   ============================================================ */
[data-aos] { transition-timing-function: var(--ease-out); }

/* 浮动元素 */
@keyframes float-slow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Fade-in-up */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 银色细线发光 */
.silver-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--silver-dim), var(--silver-border), var(--silver-dim), transparent);
  margin: 0 auto;
  max-width: 800px;
}

/* 技术网格背景 */
.tech-grid-bg {
  position: relative;
}
.tech-grid-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26,107,176,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,107,176,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* ============================================================
   响应式 — 平板 (≤1024px)
   ============================================================ */
@media (max-width: 1024px) {
  :root {
    --section-py: 64px;
    --section-py-sm: 44px;
  }

  .header__nav { display: none; }
  .header__cta { display: none; }
  .hamburger { display: flex; }

  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2)::after { display: none; }
  .stat-item__number { font-size: 2.2rem; }

  .list-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .list-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .quality-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-grid { grid-template-columns: 1fr; }

  .contact-grid { grid-template-columns: 1fr; gap: 32px; }

  .footer__grid { grid-template-columns: 1fr 1fr; gap: 28px; }

  .detail__params { grid-template-columns: repeat(2, 1fr); }

  .section-title { font-size: 1.65rem; }
  .hero__title { font-size: clamp(1.6rem, 4vw, 2.4rem); }
  .inner-banner { height: 240px; }
  .inner-banner__title { font-size: 1.65rem; }

  .dealer-features { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   响应式 — 手机 (≤768px)
   ============================================================ */
/* ============================================================
   响应式 — 手机 (≤768px)
   ------------------------------------------------------------
   手机端重排。PC 端是「四列网格 + 图片在上文字在下的大卡片」，
   直接等比压缩到 375px 会退化成一屏一张卡（首页曾被拉到 11k px）。
   这里按移动端阅读习惯重新排版：
     · 列表类（产品 / 案例 / 新闻 / 分类）→ 横向行卡片（左图右文，≈112px/行）
     · 图标类（检测品质 / 加工能力）      → 2 列磁贴 或 图标在左的行卡
     · 数据类（精度条）                   → 2×2 磁贴
     · 页脚                               → 手风琴折叠
     · 底部固定操作栏（电话 / 询价 / 回顶）
   所有多列网格统一用 minmax(0,1fr)：1fr 的最小尺寸是 min-content，
   中文长标题会把列撑破视口，minmax(0,1fr) 才能真正收窄。
   ============================================================ */

/* 手机端底部固定操作栏 — 默认隐藏，仅在 ≤768px 显示（样式见下方媒体查询） */
.mobile-bar { display: none; }

@media (max-width: 768px) {
  :root {
    --section-py: 46px;
    --section-py-sm: 34px;
    --header-h: 56px;

    /* 手机端专用令牌 */
    --m-pad: 16px;        /* 页面左右安全边距 */
    --m-img: 112px;       /* 产品/案例行卡片缩略图宽 */
    --m-img-sm: 96px;     /* 新闻行卡片缩略图宽 */
    --m-gap: 10px;        /* 网格间距 */
    --m-tap: 44px;        /* 最小触控尺寸 */
    --m-bar-h: 54px;      /* 底部操作栏高度 */
  }

  /* ---------- 基础 / 防横向溢出 ---------- */
  html { -webkit-text-size-adjust: 100%; }
  body {
    /* 给底部固定操作栏让位（含刘海屏安全区） */
    padding-bottom: calc(var(--m-bar-h) + env(safe-area-inset-bottom, 0px));
  }
  /* iOS 上字号 <16px 的输入框聚焦时会自动放大页面 */
  input, textarea, select { font-size: 16px; }
  /* 手机端不做位移式入场，避免未进入视口的区块被推歪 */
  [data-aos] { opacity: 1 !important; transform: none !important; }
  img, svg, video { max-width: 100%; }

  .container { padding: 0 var(--m-pad); }
  .section-title { font-size: 1.3rem; line-height: 1.35; }
  .section-tag { font-size: 0.68rem; }
  .section-subtitle { font-size: 0.82rem; line-height: 1.65; }

  /* 区块头：标题与「查看更多」竖排，避免横向挤压换行 */
  .section__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 22px;
  }
  .section__header .btn { padding: 9px 16px; font-size: 0.8rem; min-height: 38px; }

  /* ---------- 顶部 Hero ---------- */
  /* PC 用 100vh + 绝对定位文字；手机端 100vh 会被地址栏吃掉，
     改为由内容撑开高度，文字回归文档流 */
  .hero {
    height: auto;
    min-height: 460px;
    max-height: none;
    display: flex;
    align-items: flex-end;
  }
  .hero__content {
    position: relative;
    bottom: auto;
    left: auto;
    right: auto;
    width: 100%;
    padding: calc(var(--header-h) + 60px) var(--m-pad) 44px;
  }
  /* 文字压在实景照片上，手机端把遮罩加深一档，保证可读性 */
  .hero__overlay {
    background: linear-gradient(180deg,
      rgba(13, 13, 13, 0.5) 0%,
      rgba(13, 13, 13, 0.7) 35%,
      rgba(13, 13, 13, 0.92) 100%);
  }
  .hero__title,
  .hero__subtitle { text-shadow: 0 2px 14px rgba(0, 0, 0, 0.8); }
  .hero__subtitle { opacity: 1; color: #D5DAE1; }
  .hero__title { font-size: 1.62rem; line-height: 1.25; margin-bottom: 12px; }
  .hero__subtitle {
    font-size: 0.86rem;
    line-height: 1.7;
    margin-bottom: 22px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .hero__actions { flex-direction: column; gap: 10px; align-items: stretch; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  /* 指示器回归文档流，排在按钮下方（绝对定位在窄屏容易压到按钮） */
  .hero .hero-pagination {
    position: static;
    margin-top: 22px;
    justify-content: flex-start;
  }
  .hero-pagination .swiper-pagination-bullet { width: 28px; }
  .hero-pagination .swiper-pagination-bullet-active { width: 42px; }
  .hero__scroll { display: none; }

  /* ---------- 数据精度条 → 2×2 磁贴 ---------- */
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat-item { padding: 18px 10px; }
  .stat-item::after { top: 18%; height: 64%; }
  /* 2 列布局下只保留第 1 列右侧的竖线，第 2 列不再画 */
  .stat-item:nth-child(2n)::after { display: none; }
  .stat-item:nth-child(-n+2) { border-bottom: 1px solid var(--border-subtle); }
  .stat-item__number { font-size: 1.62rem; margin-bottom: 4px; }
  .stat-item__unit { font-size: 0.95rem; }
  .stat-item__label { font-size: 0.74rem; line-height: 1.5; }

  /* ---------- 列表网格 → 单列 ---------- */
  .list-grid,
  .list-grid--2,
  .list-grid--4,
  .related-grid { grid-template-columns: minmax(0, 1fr); gap: var(--m-gap); }

  /* ---------- 通用行卡片（主推产品 / 工程案例）---------- */
  /* 左图右文，行高恒定为缩略图高度，一屏可见 5–6 条 */
  .card {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    min-height: var(--m-img);
    border-radius: var(--radius-sm);
  }
  .card:hover { transform: none; }   /* 触屏无 hover，去掉位移残留 */
  .card__image {
    width: var(--m-img);
    min-width: var(--m-img);
    aspect-ratio: auto;
    align-self: stretch;
  }
  .card__body {
    flex: 1;
    min-width: 0;                    /* 允许长标题换行而不撑破网格 */
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .card__tag { font-size: 0.66rem; margin-bottom: 4px; }
  .card__title {
    font-size: 0.94rem;
    line-height: 1.4;
    margin-bottom: 6px;
    -webkit-line-clamp: 2;
  }
  /* 行卡片里描述会挤掉标题，省略掉，保留参数行（信息密度更高） */
  .card__desc { display: none; }
  .card__meta { gap: 8px; font-size: 0.7rem; line-height: 1.5; }
  .card__meta span { display: inline-flex; align-items: center; }

  /* ---------- 产品分类（图标卡）→ 行卡 ---------- */
  /* 图标、标题、副标题是并列的三个兄弟节点，用 flex 会排成一行；
     改用两列网格，让标题与副标题在图标右侧竖向堆叠 */
  .card--category {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr);
    grid-template-rows: auto auto;
    align-items: center;
    column-gap: 12px;
    row-gap: 2px;
    text-align: left;
    padding: 14px;
    min-height: 68px;
  }
  .card--category:hover { transform: none; }
  .card--category__icon {
    grid-column: 1;
    grid-row: 1 / span 2;
    width: 42px;
    height: 42px;
    margin: 0;
    font-size: 1.05rem;
  }
  .card--category__title { grid-column: 2; grid-row: 1; font-size: 0.96rem; margin-bottom: 0; }
  .card--category__desc {
    grid-column: 2;
    grid-row: 2;
    font-size: 0.72rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* ---------- 加工能力 → 图标在左的行卡 ---------- */
  .capability-grid { grid-template-columns: minmax(0, 1fr); gap: var(--m-gap); }
  .capability-card {
    flex-direction: row;      /* 覆盖 1024px 的 column（竖排会变成超高卡片） */
    align-items: flex-start;
    gap: 12px;
    padding: 14px;
  }
  .capability-card__icon {
    width: 42px;
    height: 42px;
    min-width: 42px;
    font-size: 1.05rem;
  }
  .capability-card__title { font-size: 0.96rem; margin-bottom: 4px; }
  .capability-card__desc { font-size: 0.79rem; line-height: 1.6; }
  .capability-card__spec { gap: 8px; margin-top: 7px; font-size: 0.7rem; }

  /* ---------- 检测·品质 → 2 列紧凑磁贴 ---------- */
  .quality-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--m-gap); }
  .quality-card { padding: 16px 10px; border-radius: var(--radius-sm); }
  .quality-card__icon { width: 40px; height: 40px; margin-bottom: 10px; font-size: 1rem; }
  .quality-card__title { font-size: 0.86rem; line-height: 1.4; }
  .quality-card__spec { font-size: 0.68rem; line-height: 1.5; margin-top: 5px; }

  /* ---------- 新闻 → 行卡片 ---------- */
  /* PC 的 column 会把配图撑满整行、正文被推到很下面，一屏放不下两条 */
  .news-item {
    flex-direction: row;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
  }
  .news-item__thumb {
    width: var(--m-img-sm);
    min-width: var(--m-img-sm);
    aspect-ratio: 4/3;
  }
  .news-item__info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .news-item__title {
    font-size: 0.94rem;
    line-height: 1.45;
    margin-bottom: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-item__desc { display: none; }
  .news-item__date { font-size: 0.72rem; margin-bottom: 5px; }

  /* ---------- CTA ---------- */
  .cta-section { padding: 40px 0; }
  .cta-section__title { font-size: 1.28rem; line-height: 1.4; margin-bottom: 10px; }
  .cta-section .btn { width: 100%; justify-content: center; }

  /* ---------- 按钮统一触控尺寸 ---------- */
  .btn { min-height: var(--m-tap); }
  .btn--lg { padding: 12px 20px; font-size: 0.9rem; }

  /* ---------- 内页 Banner / 面包屑 ---------- */
  .inner-banner { height: 148px; }
  .inner-banner__title { font-size: 1.25rem; margin-bottom: 4px; }
  .inner-banner__subtitle { font-size: 0.8rem; }
  .breadcrumb { padding: 10px var(--m-pad); font-size: 0.75rem; }

  /* ---------- 子栏目筛选栏 → 横向滚动 chips ---------- */
  .filter-bar {
    gap: 8px;
    padding: 8px 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .filter-bar::-webkit-scrollbar { display: none; }
  .filter-bar a {
    display: inline-flex;
    align-items: center;
    padding: 9px 15px;
    min-height: 38px;
    font-size: 0.8rem;
    border: 1px solid var(--border-card);
    border-radius: 999px;
    background: var(--bg-card);
  }
  .filter-bar a:hover,
  .filter-bar a.active {
    border-color: var(--brand-blue);
    background: var(--brand-blue-dim);
  }

  /* ---------- 详情页参数表 ---------- */
  .detail__params { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .detail__pager { flex-direction: column; align-items: flex-start; gap: 8px; }
  .detail__pager a { width: 100%; }

  /* ---------- 表格 ---------- */
  /* 加工能力页的 .spec-table 最宽的一行有 17px 撑出视口，
     这里让表格自己横向滚动，不再把整个页面顶宽 */
  .spec-table,
  .detail__body table {
    display: block;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .spec-table td { padding: 11px 12px; font-size: 0.8rem; }
  .spec-table td:first-child { width: 84px; }
  .detail__body table th,
  .detail__body table td { padding: 10px 12px; font-size: 0.8rem; }

  /* ---------- 联系我们 ---------- */
  .contact-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .contact-form-card { padding: 18px; }

  /* ---------- 经销商 ---------- */
  .dealer-features { grid-template-columns: minmax(0, 1fr); gap: var(--m-gap); }
  .dealer-feature { padding: 18px 16px; }

  /* ---------- 分页 / 空状态 ---------- */
  .pagination { margin-top: 26px; gap: 5px; }
  .pagination a { min-width: var(--m-tap); height: var(--m-tap); font-size: 0.82rem; }
  .empty-state { padding: 40px 16px; }

  /* ---------- 页脚：品牌块常显 + 分组折叠 ---------- */
  .footer__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding: 28px var(--m-pad) 20px;
  }
  .footer__brand-desc { font-size: 0.8rem; margin: 12px 0 14px; }
  .footer__col { border-top: 1px solid var(--border-subtle); }
  .footer__col-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 52px;
    margin-bottom: 0;
    padding: 0;
    border-bottom: none;
    cursor: pointer;
    font-size: 0.9rem;
  }
  .footer__col-title::after {
    content: '\f078';                 /* chevron-down */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.72rem;
    color: var(--text-muted);
    transition: transform var(--duration-normal) var(--ease-out);
  }
  .footer__col.open .footer__col-title::after { transform: rotate(180deg); }
  /* 用 grid-template-rows 0fr↔1fr 做高度折叠动画（height:auto 不可动画） */
  .footer__col-body {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--duration-normal) var(--ease-out);
  }
  .footer__col-body > div { overflow: hidden; }
  .footer__col.open .footer__col-body { grid-template-rows: 1fr; }
  .footer__links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 12px;
    padding-bottom: 12px;
  }
  .footer__links a { padding: 9px 0; min-height: 40px; font-size: 0.82rem; }
  .footer__contact-item { font-size: 0.8rem; margin-bottom: 10px; }
  .footer__contact-item:first-of-type { margin-top: 4px; }
  .footer__qrcode { width: 92px; height: 92px; margin-top: 12px; }
  .footer__social a,
  .footer__social span { width: 42px; height: 42px; }
  .friend-links { font-size: 0.74rem; gap: 6px; padding: 16px 0; }
  .footer__bottom { padding: 18px 0; }
  .footer__bottom-inner { flex-direction: column; text-align: center; gap: 8px; font-size: 0.74rem; }

  /* 右下角悬浮按钮在手机端与底部操作栏重复，隐藏 */
  .back-top,
  .online-service { display: none !important; }

  /* ---------- 移动端底部固定操作栏 ---------- */
  .mobile-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 900;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    height: calc(var(--m-bar-h) + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: rgba(26, 26, 26, 0.96);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-card);
  }
  .mobile-bar__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    border: none;
    background: none;
    font-family: inherit;
    font-size: 0.68rem;
    color: var(--text-secondary);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }
  .mobile-bar__item i { font-size: 1rem; }
  .mobile-bar__item:active { background: rgba(255, 255, 255, 0.05); }
  .mobile-bar__item--primary { color: var(--brand-blue-light); }
  .mobile-bar__item--primary i { font-size: 1.05rem; }
}

/* ============================================================
   响应式 — 小屏手机 (≤480px)
   ============================================================ */
@media (max-width: 480px) {
  :root {
    --section-py: 38px;
    --section-py-sm: 28px;
    --m-pad: 14px;
    --m-img: 104px;
    --m-img-sm: 88px;
  }

  .section-title { font-size: 1.2rem; }
  .hero { min-height: 430px; }
  .hero__title { font-size: 1.48rem; }
  .hero__content { padding-top: calc(var(--header-h) + 48px); }

  .stat-item__number { font-size: 1.44rem; }
  .stat-item__label { font-size: 0.7rem; }

  .card__title { font-size: 0.9rem; }
  .card__body { padding: 10px 12px; }
  .quality-card__title { font-size: 0.82rem; }
  .card--category__title { font-size: 0.92rem; }
  .cta-section__title { font-size: 1.18rem; }
  .inner-banner { height: 132px; }
  .mobile-bar__item { font-size: 0.64rem; }
}