/**
 * 科盾防腐涂料 — 工业防腐企业站样式
 * KEDUN Anti-corrosion Coatings
 *
 * 设计系统:
 *   主色: #1A2E4A (深蓝) + #A0AEC0 (银灰) + #FFFFFF (白)
 *   点缀: #F47920 (橙色安全警示)
 *   风格: 深色稳重专业，工程技术手册质感
 *   圆角: 小圆角(4-8px)专业感
 *   卡片: 深色底+银色边框
 *
 * 依赖: Font Awesome 6 Free, Swiper 11, AOS 2.3.4
 * 架构: 第三方模板模式 ({pboot:sitedomain}/skin/)
 * ★ 遵循 PBootCMS AI开发规范 V3.6 全部避坑指南
 */

/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* 基底色 — 深蓝暗色系 */
  --bg-primary: #0F1B2D;
  --bg-secondary: #152238;
  --bg-tertiary: #1A2E4A;
  --bg-card: #1A2840;
  --bg-card-hover: #203454;
  --bg-input: #16253D;
  --bg-overlay: rgba(15, 27, 45, 0.85);

  /* 品牌色 */
  --color-primary: #1A2E4A;
  --color-primary-light: #264773;
  --color-accent: #F47920;
  --color-accent-hover: #E06810;
  --color-accent-dim: rgba(244, 121, 32, 0.12);

  /* 银灰系 */
  --color-silver: #A0AEC0;
  --color-silver-light: #CBD5E0;
  --color-silver-dark: #718096;

  /* 文字色阶 */
  --text-primary: #EDF2F7;
  --text-secondary: #A0AEC0;
  --text-muted: #718096;
  --text-inverse: #1A202C;

  /* 边框 */
  --border-subtle: rgba(160, 174, 192, 0.12);
  --border-default: rgba(160, 174, 192, 0.2);
  --border-accent: rgba(244, 121, 32, 0.35);
  --border-focus: rgba(244, 121, 32, 0.5);

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(244, 121, 32, 0.15);

  /* 圆角 — 小圆角专业感 */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --radius-xl: 14px;

  /* 间距 */
  --section-py: 80px;
  --section-py-sm: 60px;
  --container-max: 1200px;
  --header-h: 72px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* 字体 — 工业专业感 */
  --font-heading: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Hiragino Sans GB', 'STHeiti', sans-serif;
  --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Hiragino Sans GB', 'WenQuanYi Micro Hei', sans-serif;
  --font-mono: 'Cascadia Code', '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%;
}

body {
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 60% 50% at 30% 0%, rgba(26, 46, 74, 0.4) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 70% 60%, rgba(244, 121, 32, 0.03) 0%, transparent 60%),
    linear-gradient(180deg, #0F1B2D 0%, #152238 100%);
  pointer-events: none;
}

::selection {
  background: rgba(244, 121, 32, 0.25);
  color: #fff;
}

/* 自定义滚动条 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--color-primary-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-silver-dark); }

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

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

ul, ol { list-style: none; }

input, textarea, select, button {
  font-family: inherit;
  font-size: inherit;
}
input::placeholder, textarea::placeholder {
  color: var(--text-muted);
  opacity: 1;
}

/* ============================================================
   排版
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 28px;
}
.section-tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-accent);
}

.section-title {
  font-size: clamp(1.6rem, 3.2vw, 2.25rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.03em;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* 区块标题组 — 统一间距，便于移动端整体收紧 */
.section-head { margin-bottom: 48px; }
.section-head--sm { margin-bottom: 40px; }
.section-head--center { text-align: center; }
.section-head--center .section-subtitle { margin-left: auto; margin-right: auto; }
.section-head--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================================
   布局容器
   ============================================================ */
.container {
  width: 100%;
  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;
}

/* ============================================================
   Header 头部 — 深蓝半透 + 固定顶部
   ★ 13.11: 深色背景，不使用透明+白色文字
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(15, 27, 45, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background: rgba(15, 27, 45, 0.98);
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
}

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

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  margin-right: auto;
}

.header__logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.header__logo-sub {
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
}

/* 主导航 */
.header__nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.header__nav-link {
  padding: 8px 14px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  position: relative;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 16px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.header__nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

/* 导航下拉 ★ 13.3: z-index 确保不被遮挡 */
.header__nav-item {
  position: relative;
}

.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 170px;
  padding: 6px 0;
  background: rgba(21, 34, 56, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--duration-normal) var(--ease-out);
  z-index: 60;
}

.header__dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.header__dropdown a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Header 右侧操作区 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 20px;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.header__cta:hover {
  background: var(--color-accent-hover);
  color: #fff;
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

/* ============================================================
   汉堡菜单 ★ 13.4: 独立在 header__actions 外
   ============================================================ */
.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 110;
  margin-left: 8px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--duration-normal) var(--ease-out);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端侧滑菜单 */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 80%;
  max-width: 360px;
  background: rgba(15, 27, 45, 0.99);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  z-index: 120;
  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; padding-top: 80px; }

.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) var(--ease-out);
  margin-bottom: 2px;
}

.mobile-nav__link:hover { color: var(--text-primary); background: rgba(255,255,255,0.03); }

.mobile-nav__sub {
  padding-left: 16px;
  margin-bottom: 8px;
  display: none;
}

.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(--color-accent); }

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 115;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.mobile-nav__overlay.show { opacity: 1; pointer-events: auto; }

/* ============================================================
   按钮系统
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-color: var(--border-default);
}

.btn--sm { padding: 7px 16px; font-size: 0.82rem; }
.btn--lg { padding: 14px 32px; font-size: 1rem; }

/* ============================================================
   卡片系统 — 深色底+银色边框
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  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-default);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(244, 121, 32, 0.1);
  transform: translateY(-2px);
}

.card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--bg-secondary);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.card:hover .card__image img { transform: scale(1.05); }

.card__body {
  padding: 20px;
}

.card__tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-dim);
  border-radius: var(--radius-xs);
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card__meta i { color: var(--color-accent); font-size: 0.7rem; }

/* 产品卡片变体 — 突出技术参数 */
.card--product .card__body { padding: 16px; }
.card--product .card__specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.card__spec {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(160, 174, 192, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
}

.card__spec i { color: var(--color-accent); font-size: 0.6rem; }

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 320px;
  overflow: hidden;
  background: var(--bg-secondary);
  margin-top: var(--header-h);
}

.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(15,27,45,0.65) 0%, rgba(15,27,45,0.5) 50%, var(--bg-primary) 100%);
}

.inner-banner__content {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.inner-banner__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
  letter-spacing: 0.04em;
}

.inner-banner__subtitle {
  font-size: 1rem;
  color: var(--color-silver-light);
  max-width: 500px;
}

/* 面包屑 */
.breadcrumb-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 12px 24px;
  font-size: 0.82rem;
  color: var(--text-muted);
  overflow-x: auto;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--text-secondary); white-space: nowrap; }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb i { font-size: 0.6rem; color: var(--text-muted); }

/* ============================================================
   分页
   ============================================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 8px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.pagination a:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-default);
}

.pagination .active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
  font-weight: 600;
}

/* ============================================================
   空状态
   ============================================================ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state p { font-size: 0.95rem; }

/* ============================================================
   首页 — Hero Banner (模块1)
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 850px;
  overflow: hidden;
  margin-top: 0;
}

.hero .swiper {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(15,27,45,0.35) 0%, rgba(15,27,45,0.15) 40%, rgba(15,27,45,0.9) 100%);
}

.hero__content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 100px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  text-align: left;
}

.hero__label {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: #fff;
  background: var(--color-accent);
  border-radius: var(--radius-xs);
  margin-bottom: 1rem;
  width: fit-content;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 1rem;
  text-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
  letter-spacing: 0.04em;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-silver-light);
  margin-bottom: 2rem;
  max-width: 560px;
  line-height: 1.7;
}

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

.hero__scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: scrollBounce 2s ease-in-out infinite;
}

.hero__scroll-line {
  width: 1px;
  height: 28px;
  background: linear-gradient(180deg, var(--color-accent), transparent);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* Hero Swiper 分页器 */
.hero-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.hero-pagination .swiper-pagination-bullet {
  width: 32px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,0.25);
  opacity: 1;
  transition: all var(--duration-normal);
  cursor: pointer;
}

.hero-pagination .swiper-pagination-bullet-active {
  width: 48px;
  background: var(--color-accent);
  box-shadow: 0 0 8px rgba(244, 121, 32, 0.4);
}

/* ============================================================
   首页 — 数据实力 (模块2)
   ============================================================ */
.stats-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.4;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-item { text-align: center; position: relative; }

.stat-item__number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  color: #fff;
  line-height: 1;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}

.stat-item__number .highlight {
  color: var(--color-accent);
}

.stat-item__label {
  font-size: 0.88rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.stat-item__unit {
  font-size: 1.25rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* ============================================================
   首页 — 核心产品分类 (模块3)
   ============================================================ */
.product-cats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.product-cat {
  text-align: center;
  padding: 32px 16px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.product-cat:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.product-cat__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--color-accent-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-accent);
  transition: all var(--duration-normal) var(--ease-out);
}

.product-cat:hover .product-cat__icon {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.product-cat__name {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.product-cat__spec {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ============================================================
   首页 — 主推产品 (模块4)
   ============================================================ */
.featured-products {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============================================================
   首页 — 解决方案 (模块5)
   ============================================================ */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.solution-card {
  padding: 36px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-out);
}

.solution-card:hover {
  border-color: var(--border-default);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.solution-card:hover::before { transform: scaleX(1); }

.solution-card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: var(--color-accent-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-accent);
}

.solution-card:hover .solution-card__icon {
  background: var(--color-accent);
  color: #fff;
}

.solution-card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.solution-card__desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   首页 — 工程案例 (模块6)
   ============================================================ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.case-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}

.case-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.case-card:hover img { transform: scale(1.08); }

.case-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 40%, rgba(15,27,45,0.9));
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
}

.case-card__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.case-card__tag {
  font-size: 0.72rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* ============================================================
   首页 — 技术资质 (模块7)
   ============================================================ */
.certs-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.certs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.cert-item {
  text-align: center;
  padding: 32px 20px;
  transition: all var(--duration-normal) var(--ease-out);
}

.cert-item__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--text-secondary);
  transition: all var(--duration-normal) var(--ease-out);
}

.cert-item:hover .cert-item__icon {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: var(--shadow-glow);
  transform: scale(1.05);
}

.cert-item__name {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.cert-item__desc {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   首页 — 新闻 (模块8)
   ============================================================ */
.news-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
}

.news-card:hover {
  border-color: var(--border-default);
  background: var(--bg-card-hover);
  transform: translateY(-1px);
}

.news-card__thumb {
  width: 100px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.news-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-card__info { flex: 1; min-width: 0; }

.news-card__title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card__date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================================================
   首页 — CTA (模块9)
   ============================================================ */
.cta-section {
  position: relative;
  text-align: center;
  padding: 80px 0;
  background: var(--bg-secondary);
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  margin: 20px;
  opacity: 0.5;
  pointer-events: none;
}

.cta-section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 1rem;
}

.cta-section__desc {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================================
   列表页 — 产品/案例/新闻
   ============================================================ */
.page-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 60px;
}

/* 侧边栏 */
.sidebar {
  flex-shrink: 0;
}

.sidebar__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 2px solid var(--color-accent);
}

.sidebar__nav a {
  display: block;
  padding: 10px 14px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  margin-bottom: 2px;
}

.sidebar__nav a:hover,
.sidebar__nav a.active {
  color: var(--color-accent);
  background: var(--color-accent-dim);
}

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

.list-header {
  margin-bottom: 32px;
}

.list-header h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.list-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* 子栏目过滤栏 */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  margin-bottom: 28px;
  padding-bottom: 8px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar { display: none; }

.filter-bar a {
  display: inline-flex;
  padding: 7px 18px;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.filter-bar a:hover,
.filter-bar a.active {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
}

/* ============================================================
   详情页 — 产品详情 / 案例详情 / 新闻详情
   ============================================================ */
.detail {
  max-width: 900px;
  margin: 0 auto;
}

.detail__gallery {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 36px;
  background: var(--bg-secondary);
}

.detail__gallery .swiper-slide {
  aspect-ratio: 16/9;
}

.detail__gallery .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail__header {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.detail__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 12px;
}

.detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.detail__meta i {
  color: var(--color-accent);
  margin-right: 4px;
}

/* 产品参数卡片 ★ ext字段展示 */
.detail__params {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 36px;
}

.detail__param {
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all var(--duration-fast) var(--ease-out);
}

.detail__param:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.detail__param-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 4px;
  letter-spacing: 0.03em;
}

.detail__param-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-heading);
}

.detail__body {
  color: var(--text-secondary);
  line-height: 2;
  font-size: 0.95rem;
  letter-spacing: 0.015em;
}

.detail__body img {
  border-radius: var(--radius-md);
  margin: 24px 0;
  max-width: 100%;
}

.detail__body p { margin-bottom: 16px; }

/* 正文与上方卡片组的间距 */
.detail__body--stacked { margin-top: 48px; }

.detail__body h2, .detail__body h3, .detail__body h4 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  margin-top: 32px;
  margin-bottom: 16px;
}

.detail__body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.88rem;
}

.detail__body table th,
.detail__body table td {
  padding: 10px 14px;
  border: 1px solid var(--border-subtle);
  text-align: left;
}

.detail__body table th {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 600;
}

/* 上下篇 */
.detail__pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

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

/* 相关推荐 */
.related-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 56px 0 24px;
  color: var(--text-primary);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ============================================================
   技术参数页 — 技术数据表下载区
   ============================================================ */
.tech-docs { margin-top: 48px; }

.tech-docs__title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.tech-docs__title i { color: var(--color-accent); }

.tech-docs__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.tech-docs__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.tech-docs__item:hover { border-color: var(--border-accent); }

.tech-docs__icon {
  font-size: 1.5rem;
  color: var(--color-accent);
  flex-shrink: 0;
}

.tech-docs__info { min-width: 0; }

.tech-docs__name {
  font-size: 0.88rem;
  color: var(--text-primary);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tech-docs__meta { font-size: 0.75rem; color: var(--text-muted); }

.tech-docs__btn { margin-left: auto; flex-shrink: 0; }

/* ============================================================
   联系我们 / 留言询价
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  transition: all var(--duration-fast) var(--ease-out);
}

.contact-info__item:hover { border-color: var(--border-accent); }

.contact-info__icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
  font-size: 1rem;
}

.contact-info__label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
  letter-spacing: 0.03em;
}

.contact-info__value {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 表单卡片 */
.form-card {
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.form-card h3 {
  font-size: 1.3rem;
  margin-bottom: 6px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 5px;
  font-weight: 500;
}

.form-group .required { color: var(--color-accent); }

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-dim);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

/* ============================================================
   搜索页
   ============================================================ */
.search-box {
  max-width: 680px;
  margin: 0 auto;
  padding-top: 24px;
}

.search-form-row {
  display: flex;
  gap: 10px;
}

.search-input-wrap {
  position: relative;
  flex: 1;
}

.search-input-wrap i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.search-input-wrap input {
  width: 100%;
  padding: 14px 20px 14px 42px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
}

.search-input-wrap input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-dim);
}

.search-result-item {
  display: flex;
  gap: 16px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
  margin-bottom: 10px;
}

.search-result-item:hover { border-color: var(--border-accent); }

.search-result-item__thumb {
  width: 100px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.search-result-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.search-result-item__info { flex: 1; min-width: 0; }

.search-result-item__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result-item__date {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.search-result-item__desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   Footer 底部 — 深色四列布局
   ============================================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
}

.footer__top-line {
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-accent), var(--color-primary-light));
  opacity: 0.6;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 56px 0 40px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.footer__brand-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 14px 0;
}

.footer__social {
  display: flex;
  gap: 10px;
}

.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.footer__social a:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.footer__col-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

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

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.footer__contact-item i {
  color: var(--color-accent);
  margin-top: 3px;
  flex-shrink: 0;
  font-size: 0.8rem;
}

.footer__qrcode {
  width: 110px;
  height: 110px;
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: #999;
  text-align: center;
}

.footer__qr-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 10px;
}

.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 18px 0;
}

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  font-size: 0.78rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

.footer__bottom a {
  color: var(--text-muted);
  transition: color var(--duration-fast);
}

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

/* 友情链接 */
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  padding: 16px 0;
}

.friend-links__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-shrink: 0;
  font-weight: 600;
}

.friend-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color var(--duration-fast);
}

.friend-links a:hover { color: var(--color-accent); }

/* ============================================================
   返回顶部
   ============================================================ */
.back-top {
  position: fixed;
  right: 20px;
  bottom: 80px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  cursor: pointer;
  z-index: 80;
  opacity: 0;
  pointer-events: none;
  transition: all var(--duration-normal) var(--ease-out);
}

.back-top.show { opacity: 1; pointer-events: auto; }

.back-top:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* 在线客服按钮 */
.kf-btn {
  position: fixed;
  right: 20px;
  bottom: 134px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 80;
  box-shadow: 0 4px 16px rgba(244, 121, 32, 0.4);
  animation: kfPulse 2s ease-in-out infinite;
  transition: all var(--duration-fast) var(--ease-out);
}

.kf-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(244, 121, 32, 0.55);
}

@keyframes kfPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(244, 121, 32, 0.45); }
  50% { box-shadow: 0 0 0 14px rgba(244, 121, 32, 0); }
}

/* ============================================================
   响应式 — 平板 (768px - 1023px)
   ============================================================ */
@media (max-width: 1023px) {
  :root { --section-py: 56px; --section-py-sm: 44px; }

  .header__nav,
  .header__actions { display: none; }

  .hamburger { display: flex; }

  .stats { grid-template-columns: repeat(2, 1fr); gap: 24px 16px; }

  .product-cats { grid-template-columns: repeat(3, 1fr); }

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

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

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

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

  .news-row { grid-template-columns: 1fr; }

  .page-layout { grid-template-columns: 1fr; gap: 0; }

  .sidebar { margin-bottom: 20px; }

  .sidebar__nav { display: flex; flex-wrap: wrap; gap: 6px; }

  .sidebar__nav a { margin-bottom: 0; }

  .list-grid { grid-template-columns: repeat(3, 1fr); }

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

  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }

  .detail__pager { flex-direction: column; text-align: center; }

  .related-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================================
   响应式 — 移动端 (< 768px)
   ★ 排版策略：卡片组由「纵向堆叠」改为「横向滑动 + 指示点」，
     配合区块间距收紧，避免 PC 版式直接压缩导致页面过长
   ============================================================ */
@media (max-width: 767px) {
  :root {
    --section-py: 34px;
    --section-py-sm: 26px;
  }

  .container { padding: 0 16px; }

  /* ---------- 区块标题组 ---------- */
  .section-head { margin-bottom: 22px; }
  .section-head--sm { margin-bottom: 18px; }
  .section-head--row { align-items: center; margin-bottom: 18px; }
  .section-title { font-size: 1.3rem; }
  .section-subtitle { font-size: 0.84rem; line-height: 1.6; }
  .section-tag { font-size: 0.68rem; margin-bottom: 0.5rem; }

  /* ---------- Hero ---------- */
  .hero { height: 66vh; min-height: 400px; max-height: 560px; }
  .hero__content { padding-bottom: 48px; }
  .hero__title { font-size: 1.7rem; margin-bottom: 0.7rem; }
  .hero__subtitle { font-size: 0.88rem; margin-bottom: 1.25rem; }
  .hero__label { font-size: 0.68rem; padding: 3px 11px; margin-bottom: 0.7rem; }
  .hero__actions { gap: 10px; }
  .hero__actions .btn { flex: 1 1 auto; justify-content: center; }
  .hero-pagination { margin-top: 14px; }
  .hero__scroll { display: none; }

  /* ---------- 内页 Banner / 面包屑 ---------- */
  .inner-banner { height: 180px !important; }
  .inner-banner__title { font-size: 1.45rem; }
  .inner-banner__subtitle { font-size: 0.85rem; }
  .breadcrumb { padding: 9px 16px; font-size: 0.75rem; }

  /* ---------- 横滑轨道通用规则 ---------- */
  .product-cats,
  .featured-products,
  .solutions-grid,
  .cases-grid,
  .certs-grid,
  .news-row,
  .related-grid {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    /* 左右出血到屏幕边缘，让下一张卡片露出一角作为滑动提示 */
    margin-left: -16px;
    margin-right: -16px;
    padding: 2px 16px 12px;
    scroll-padding-left: 16px;
  }

  .product-cats::-webkit-scrollbar,
  .featured-products::-webkit-scrollbar,
  .solutions-grid::-webkit-scrollbar,
  .cases-grid::-webkit-scrollbar,
  .certs-grid::-webkit-scrollbar,
  .news-row::-webkit-scrollbar,
  .related-grid::-webkit-scrollbar { display: none; }

  .product-cats > *,
  .featured-products > *,
  .solutions-grid > *,
  .cases-grid > *,
  .certs-grid > *,
  .news-row > *,
  .related-grid > * {
    flex-grow: 0;
    flex-shrink: 0;
    scroll-snap-align: start;
  }

  /* 各组卡片宽度 */
  .product-cats > * { flex-basis: 132px; }
  .featured-products > * { flex-basis: 76%; }
  .solutions-grid > * { flex-basis: 72%; }
  .cases-grid > * { flex-basis: 60%; }
  .certs-grid > * { flex-basis: 44%; }
  .news-row > * { flex-basis: 86%; }
  .related-grid > * { flex-basis: 72%; }

  /* ---------- 卡片内部收紧 ---------- */
  .product-cat { padding: 18px 10px 14px; }
  .product-cat__icon { width: 42px; height: 42px; font-size: 1.15rem; margin-bottom: 10px; }
  .product-cat__name { font-size: 0.82rem; margin-bottom: 3px; }
  .product-cat__spec { font-size: 0.68rem; }

  .solution-card { padding: 20px 16px; }
  .solution-card__icon { width: 44px; height: 44px; font-size: 1.15rem; margin-bottom: 10px; }
  .solution-card__title { font-size: 0.95rem; margin-bottom: 6px; }
  .solution-card__desc { font-size: 0.78rem; line-height: 1.55; }

  .cert-item { padding: 16px 8px; }
  .cert-item__icon { width: 50px; height: 50px; font-size: 1.3rem; margin-bottom: 10px; }
  .cert-item__name { font-size: 0.84rem; }
  .cert-item__desc { font-size: 0.7rem; }

  .card__image { aspect-ratio: 4 / 3; }
  .card__body, .card--product .card__body { padding: 12px; }
  .card__title { font-size: 0.92rem; }
  .card__desc { font-size: 0.78rem; line-height: 1.55; }
  .card__specs { gap: 4px; margin-top: 8px; }
  .card__spec { font-size: 0.64rem; padding: 2px 6px; }

  .news-card { padding: 10px; gap: 10px; }
  .news-card__thumb { width: 84px; height: 66px; }
  .news-card__title { font-size: 0.86rem; }
  .news-card__date { font-size: 0.68rem; }

  /* ---------- 数据实力 ---------- */
  .stats { grid-template-columns: repeat(2, 1fr); gap: 18px 12px; }
  .stat-item__number { font-size: 1.7rem; margin-bottom: 4px; }
  .stat-item__unit { font-size: 0.95rem; }
  .stat-item__label { font-size: 0.75rem; }

  /* ---------- 横滑指示点（由 main.js 注入） ---------- */
  .hscroll-dots {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin-top: 2px;
  }
  .hscroll-dots span {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--border-default);
    transition: all var(--duration-fast) var(--ease-out);
  }
  .hscroll-dots span.on {
    width: 16px;
    border-radius: 3px;
    background: var(--color-accent);
  }

  /* ---------- CTA ---------- */
  .cta-section { padding: 40px 0; }
  .cta-section::before { margin: 10px; }
  .cta-section__title { font-size: 1.25rem; margin-bottom: 0.7rem; }
  .cta-section__desc { font-size: 0.85rem; margin-bottom: 20px; }
  .cta-section .btn--lg { flex: 1 1 auto; justify-content: center; }

  /* ---------- 列表页 ---------- */
  .page-layout { gap: 0; padding-top: 20px; padding-bottom: 26px; }
  /* 顶部已有吸顶筛选栏，侧栏在手机上内容重复，隐藏 */
  .sidebar { display: none; }
  .list-header { margin-bottom: 16px; }
  .list-header h1 { font-size: 1.3rem; }
  .list-header p { font-size: 0.8rem; }
  .list-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .filter-bar { gap: 6px; }
  .filter-bar a { padding: 6px 13px; font-size: 0.78rem; }
  .pagination { margin-top: 26px; gap: 3px; }
  .pagination a, .pagination span { min-width: 34px; height: 34px; font-size: 0.8rem; }
  .empty-state { padding: 40px 16px; }

  /* ---------- 详情页 ---------- */
  .detail__gallery { margin-bottom: 20px; }
  .detail__gallery .swiper-slide { aspect-ratio: 4 / 3; }
  .detail__header { margin-bottom: 18px; padding-bottom: 14px; }
  .detail__title { font-size: 1.25rem; }
  .detail__meta { gap: 10px; font-size: 0.75rem; }
  .detail__params { grid-template-columns: repeat(2, 1fr); gap: 8px; margin-bottom: 22px; }
  .detail__param { padding: 10px 8px; }
  .detail__param-label { font-size: 0.66rem; }
  .detail__param-value { font-size: 0.92rem; }
  .detail__body { font-size: 0.88rem; line-height: 1.8; }
  .detail__body p { margin-bottom: 12px; }
  .detail__body h2, .detail__body h3, .detail__body h4 { margin-top: 22px; margin-bottom: 10px; }
  .detail__body h2 { font-size: 1.15rem; }
  .detail__body h3 { font-size: 1rem; }
  .detail__body table { font-size: 0.76rem; margin: 16px 0; }
  .detail__body table th, .detail__body table td { padding: 7px 9px; }
  .detail__body img { margin: 14px 0; }
  .detail__pager { margin-top: 26px; padding-top: 16px; font-size: 0.78rem; }
  .related-title { font-size: 1.05rem; margin: 28px 0 14px; }
  .detail__body--stacked { margin-top: 24px; }

  /* ---------- 技术参数页下载区 ---------- */
  .tech-docs { margin-top: 26px; }
  .tech-docs__title { font-size: 1.1rem; margin-bottom: 14px; }
  .tech-docs__grid { grid-template-columns: 1fr; gap: 8px; }
  .tech-docs__item { padding: 11px 13px; gap: 10px; }
  .tech-docs__icon { font-size: 1.15rem; }
  .tech-docs__name { font-size: 0.8rem; }
  .tech-docs__meta { font-size: 0.68rem; }

  /* ---------- 联系 / 询价 ---------- */
  .contact-grid { gap: 22px; }
  .contact-info__item { padding: 12px; gap: 10px; margin-bottom: 8px; }
  .contact-info__icon { width: 36px; height: 36px; font-size: 0.88rem; }
  .contact-info__label { font-size: 0.72rem; }
  .contact-info__value { font-size: 0.82rem; }
  .form-card { padding: 18px 16px; }

  /* ---------- 搜索页 ---------- */
  .search-result-item { flex-direction: column; }
  .search-result-item__thumb { width: 100%; height: 150px; }

  /* ---------- Footer：四列改两列 + 通栏 ---------- */
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px 18px;
    padding: 26px 16px 20px;
  }
  /* 品牌简介通栏 */
  .footer__grid > div:first-child { grid-column: 1 / -1; }
  .footer__brand-desc {
    margin: 10px 0;
    font-size: 0.78rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .footer__social a { width: 32px; height: 32px; font-size: 0.82rem; }
  .footer__col-title { font-size: 0.88rem; margin-bottom: 10px; }
  .footer__links { gap: 6px; }
  .footer__links a { font-size: 0.78rem; }
  .footer__contact-item { font-size: 0.76rem; margin-bottom: 7px; gap: 8px; }
  /* 关注我们：通栏 + 二维码与说明横向排布 */
  .footer__grid > div:last-child {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 14px;
  }
  .footer__grid > div:last-child .footer__col-title { display: none; }
  .footer__qrcode { width: 74px; height: 74px; flex-shrink: 0; }
  .footer__qr-text { font-size: 0.74rem; margin-top: 0; line-height: 1.6; }
  .friend-links { gap: 9px; padding: 10px 0; }
  .friend-links a, .friend-links__label { font-size: 0.72rem; }
  .footer__bottom { padding: 12px 0; }
  .footer__bottom-inner { font-size: 0.7rem; padding: 0 16px; gap: 6px; }

  /* ---------- 浮动按钮 ---------- */
  .back-top { right: 12px; bottom: 58px; width: 38px; height: 38px; }
  .kf-btn { right: 12px; bottom: 102px; width: 46px; height: 46px; font-size: 1rem; }
}

/* ============================================================
   prefers-reduced-motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}