/**
 * 智造工厂 Max — 工业制造企业站样式
 * 橙白工业风：深灰 #2C2C2C + 活力橙 #E65C1E + 银灰 #F5F5F5
 * 小圆角(4-6px)保持工业锐利感，轻微阴影，卡片带浅边框
 * 纯原生 CSS + Grid/Flex，无框架依赖
 */


/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* 主色系 */
  --orange-500: #E65C1E;
  --orange-600: #CC4F14;
  --orange-400: #F0773E;
  --orange-50: rgba(230, 92, 30, 0.06);
  --orange-100: rgba(230, 92, 30, 0.12);

  /* 灰色系 */
  --gray-50: #FAFAFA;
  --gray-100: #F5F5F5;
  --gray-200: #EAEAEA;
  --gray-300: #D4D4D4;
  --gray-400: #A3A3A3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #2C2C2C;
  --gray-900: #1A1A1A;

  /* 深蓝灰 */
  --blue-gray-800: #1E2A36;
  --blue-gray-900: #15202B;

  /* 功能色 */
  --white: #FFFFFF;
  --black: #0D0D0D;

  /* 文字 */
  --text-primary: #1A1A1A;
  --text-secondary: #525252;
  --text-muted: #737373;
  --text-light: #A3A3A3;
  --text-on-dark: #EAEAEA;
  --text-on-dark-muted: #A3A3A3;

  /* 背景 */
  --bg-body: #FAFAFA;
  --bg-white: #FFFFFF;
  --bg-gray: #F5F5F5;
  --bg-dark: #2C2C2C;
  --bg-dark-secondary: #1E2A36;

  /* 边框 */
  --border-light: #EAEAEA;
  --border-medium: #D4D4D4;
  --border-dark: rgba(255, 255, 255, 0.08);

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-card-hover: 0 6px 24px rgba(0, 0, 0, 0.10);

  /* 圆角 — 工业锐利感 */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* 间距 */
  --section-py: 88px;
  --section-py-sm: 56px;
  --container-max: 1200px;
  --header-h: 76px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;

  /* 字体 — Noto Sans SC 专业中文 + Inter 英文数字 */
  --font-heading: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', 'Courier New', 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-body);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background: var(--orange-100);
  color: var(--orange-600);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--gray-100); }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}
a:hover { color: var(--orange-500); }

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-light);
  opacity: 1;
}

/* ============================================================
   排版
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--orange-500);
  margin-bottom: 0.5rem;
}
.section-tag--light {
  color: var(--orange-400);
}

.section-title {
  font-size: clamp(1.6rem, 3.2vw, 2.25rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.section-title--light { color: var(--white); }

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.7;
}
.section-subtitle--light { color: var(--text-on-dark-muted); }

/* ============================================================
   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;
}
.section--gray {
  background: var(--bg-gray);
}
.section--dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}
.section--dark-secondary {
  background: var(--bg-dark-secondary);
  color: var(--text-on-dark);
}

/* ============================================================
   Header
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow var(--duration-normal) var(--ease-out);
}
.header.scrolled {
  box-shadow: var(--shadow-md);
}

.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: 40px;
}
.header__logo-icon {
  width: 42px;
  height: 42px;
  background: var(--orange-500);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--white);
}
.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}
.header__logo-sub {
  font-size: 0.62rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

/* 主导航 */
.header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-right: auto;
}
.header__nav-link {
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}
.header__nav-link:hover,
.header__nav-link.active {
  color: var(--orange-500);
  background: var(--orange-50);
}

/* 导航下拉 */
.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: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 160px;
  padding: 6px 0;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  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);
  white-space: nowrap;
}
.header__dropdown a:hover {
  color: var(--orange-500);
  background: var(--gray-50);
}

/* 头部右侧操作区 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 20px;
}
.header__tel {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}
.header__tel i { color: var(--orange-500); }

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background: var(--orange-500);
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}
.header__cta:hover {
  background: var(--orange-600);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(230, 92, 30, 0.3);
}

/* ============================================================
   汉堡菜单（移动端）
   ============================================================ */
.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: 12px;
  flex-shrink: 0;
}
.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;
  right: 0;
  bottom: 0;
  width: 80%;
  max-width: 340px;
  background: var(--white);
  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;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}
.mobile-nav__link:hover {
  color: var(--orange-500);
  background: var(--orange-50);
}
.mobile-nav__sub {
  padding-left: 16px;
  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(--orange-500); }

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 115;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal);
}
.mobile-nav__overlay.show {
  opacity: 1;
  pointer-events: auto;
}

/* 移动端底部快捷栏 */
.mobile-quick-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background: var(--white);
  border-top: 1px solid var(--border-light);
  padding: 6px 0 env(safe-area-inset-bottom, 6px);
}
.mobile-quick-bar__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  text-align: center;
}
.mobile-quick-bar__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 4px;
  font-size: 0.68rem;
  color: var(--text-muted);
  transition: color var(--duration-fast);
}
.mobile-quick-bar__item i { font-size: 1.15rem; }
.mobile-quick-bar__item.active { color: var(--orange-500); }

/* ============================================================
   按钮系统
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  line-height: 1.4;
}

.btn--primary {
  background: var(--orange-500);
  color: var(--white);
}
.btn--primary:hover {
  background: var(--orange-600);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(230, 92, 30, 0.35);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--orange-500);
  border: 1.5px solid var(--orange-500);
}
.btn--outline:hover {
  background: var(--orange-500);
  color: var(--white);
}

.btn--outline-light {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}
.btn--outline-light:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-medium);
}
.btn--ghost:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
  color: var(--text-primary);
}

.btn--lg {
  padding: 15px 36px;
  font-size: 1rem;
}

/* ============================================================
   卡片系统
   ============================================================ */
.card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}
.card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--gray-100);
}
.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(1.04);
}

.card__body {
  padding: 20px;
}

.card__tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--orange-500);
  background: var(--orange-50);
  border-radius: var(--radius-xs);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card__tag--new {
  background: var(--orange-500);
  color: var(--white);
}

.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-muted);
  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-light);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.card__meta i { color: var(--orange-500); font-size: 0.85rem; }

.card__model {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

/* 角标 */
.card__badge {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  padding: 4px 10px;
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: var(--radius-xs);
  color: var(--white);
  letter-spacing: 0.05em;
}
.card__badge--new {
  background: var(--orange-500);
}
.card__badge--hot {
  background: #DC2626;
}

/* ============================================================
   首页 — Hero Banner
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 800px;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero .swiper {
  position: absolute;
  inset: 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(0, 0, 0, 0.45) 0%,
    rgba(0, 0, 0, 0.25) 45%,
    rgba(0, 0, 0, 0.6) 100%);
}
.hero__content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  padding-top: var(--header-h);
}
.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 1rem;
  max-width: 700px;
  letter-spacing: -0.02em;
}
.hero__subtitle {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
  font-weight: 400;
  max-width: 560px;
  line-height: 1.6;
}
.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Hero 分页器 */
.hero-pagination {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 8px;
}
.hero-pagination .swiper-pagination-bullet {
  width: 40px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.35);
  opacity: 1;
  transition: all var(--duration-normal);
}
.hero-pagination .swiper-pagination-bullet-active {
  width: 60px;
  background: var(--orange-500);
}

/* 滚动指示器 */
.hero__scroll {
  position: absolute;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  animation: scrollBounce 2s ease-in-out infinite;
}
.hero__scroll-line {
  width: 1px;
  height: 28px;
  background: linear-gradient(180deg, var(--orange-500), transparent);
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================================
   首页 — 核心优势
   ============================================================ */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
}
.feature-card:hover {
  border-color: var(--orange-500);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.feature-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: var(--radius-sm);
  background: var(--orange-50);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--orange-500);
  transition: all var(--duration-normal);
}
.feature-card:hover .feature-card__icon {
  background: var(--orange-500);
  color: var(--white);
}
.feature-card__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.feature-card__desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ============================================================
   首页 — 产品网格
   ============================================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card .card__image {
  aspect-ratio: 4 / 3;
}
.product-card .card__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--orange-500);
  margin-top: 12px;
  transition: gap var(--duration-fast);
}
.product-card:hover .card__link { gap: 8px; }

/* ============================================================
   首页 — 工厂实景（左文右视频）
   ============================================================ */
.factory-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.factory-video {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--gray-900);
  cursor: pointer;
}
.factory-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.factory-video__poster {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
}
.factory-video__play {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--orange-500);
  border: none;
  color: var(--white);
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--duration-normal);
  box-shadow: 0 4px 20px rgba(230, 92, 30, 0.5);
}
.factory-video__play:hover {
  background: var(--orange-600);
  transform: scale(1.08);
}
.factory-text h3 {
  font-size: 1.75rem;
  margin-bottom: 20px;
}
.factory-text p {
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.factory-text__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}
.factory-stat {
  padding: 16px;
  background: var(--gray-50);
  border-left: 3px solid var(--orange-500);
  border-radius: var(--radius-xs);
}
.factory-stat__num {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--orange-500);
}
.factory-stat__label {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ============================================================
   首页 — 案例展示（两行两大卡片）
   ============================================================ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.case-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--gray-200);
}
.case-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}
.case-card:hover .case-card__img { transform: scale(1.04); }
.case-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 40%, rgba(0, 0, 0, 0.75));
}
.case-card__info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px;
  color: var(--white);
}
.case-card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.case-card__desc {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.7);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.case-card__scale {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--orange-500);
  border-radius: var(--radius-xs);
  margin-bottom: 8px;
}

/* ============================================================
   首页 — 数字统计（深色背景）
   ============================================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item__number {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 800;
  color: var(--orange-500);
  line-height: 1;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}
.stat-item__label {
  font-size: 0.9rem;
  color: var(--text-on-dark-muted);
}

/* ============================================================
   首页 — 新闻列表
   ============================================================ */
.news-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.news-item {
  display: flex;
  gap: 20px;
  padding: 16px;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal);
}
.news-item:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-sm);
}
.news-item__thumb {
  width: 160px;
  height: 120px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--gray-100);
}
.news-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-item__info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.news-item__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item__date {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 8px;
}
.news-item__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: auto;
}

/* ============================================================
   首页 — 合作伙伴 Logo 墙
   ============================================================ */
.partner-swiper {
  overflow: hidden;
  padding: 20px 0;
}
.partner-slide {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80px;
  padding: 0 20px;
}
.partner-slide span {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-400);
  letter-spacing: 0.04em;
  transition: color var(--duration-fast);
}
.partner-slide:hover span {
  color: var(--orange-500);
}

/* ============================================================
   首页 — CTA 区块
   ============================================================ */
.cta-block {
  text-align: center;
  padding: 80px 24px;
  background: var(--orange-500);
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}
.cta-block__title {
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.75rem;
  position: relative;
}
.cta-block__desc {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1rem;
  margin-bottom: 28px;
  position: relative;
}
.cta-block .btn--outline-light { position: relative; }

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 320px;
  overflow: hidden;
  background: var(--bg-dark);
}
.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(28, 28, 28, 0.65) 0%,
    rgba(28, 28, 28, 0.45) 50%,
    rgba(28, 28, 28, 0.75) 100%);
}
.inner-banner__content {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  padding-top: 20px;
}
.inner-banner__title {
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
}
.inner-banner__subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.65);
}

/* 面包屑 */
.breadcrumb-bar {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 14px 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--orange-500); }
.breadcrumb i { font-size: 0.6rem; color: var(--text-light); }

/* ============================================================
   列表页 — 网格 + 筛选
   ============================================================ */
.list-header {
  text-align: center;
  margin-bottom: 40px;
}
.list-header h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.5rem;
}

/* 子栏目过滤栏 */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  margin-bottom: 32px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.filter-bar::-webkit-scrollbar { display: none; }
.filter-bar a {
  display: inline-flex;
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border-medium);
  border-radius: 100px;
  white-space: nowrap;
  transition: all var(--duration-fast);
  flex-shrink: 0;
}
.filter-bar a:hover,
.filter-bar a.active {
  color: var(--white);
  border-color: var(--orange-500);
  background: var(--orange-500);
}

.list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============================================================
   详情页
   ============================================================ */
.detail {
  max-width: 900px;
  margin: 0 auto;
}

/* 详情页大图轮播 */
.detail-gallery {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 36px;
  background: var(--gray-100);
}
.detail-gallery .swiper-slide {
  aspect-ratio: 16 / 9;
}
.detail-gallery .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 详情信息 */
.detail__header {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-light);
}
.detail__title {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  margin-bottom: 10px;
}
.detail__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.detail__meta-row i { color: var(--orange-500); margin-right: 4px; }

/* 参数卡片 */
.detail__params {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}
.detail__param {
  padding: 18px 16px;
  background: var(--gray-50);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all var(--duration-fast);
}
.detail__param:hover {
  border-color: var(--orange-500);
  background: var(--orange-50);
}
.detail__param-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.detail__param-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* 正文 */
.detail__body {
  color: var(--text-secondary);
  line-height: 2;
  font-size: 0.95rem;
}
.detail__body img {
  border-radius: var(--radius-sm);
  margin: 24px 0;
  max-width: 100%;
}
.detail__body p { margin-bottom: 16px; }
.detail__body h2, .detail__body h3, .detail__body h4 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  margin-top: 36px;
  margin-bottom: 16px;
}

/* 技术参数表 */
.detail__table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.9rem;
}
.detail__table th, .detail__table td {
  padding: 12px 16px;
  text-align: left;
  border: 1px solid var(--border-light);
}
.detail__table th {
  background: var(--gray-100);
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}
.detail__table tr:hover td {
  background: var(--gray-50);
}

/* 上下篇导航 */
.detail__pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
  font-size: 0.88rem;
  color: var(--text-muted);
}
.detail__pager a { color: var(--text-secondary); }
.detail__pager a:hover { color: var(--orange-500); }

/* 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(4, 1fr);
  gap: 20px;
}

/* ============================================================
   图库/荣誉网格
   ============================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  cursor: pointer;
  background: var(--gray-100);
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow);
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 50%, rgba(0, 0, 0, 0.7));
  opacity: 0;
  transition: opacity var(--duration-normal);
  display: flex;
  align-items: flex-end;
  padding: 20px;
}
.gallery-item:hover .gallery-item__overlay { opacity: 1; }
.gallery-item__title {
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
}

/* ============================================================
   联系我们
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: all var(--duration-fast);
}
.contact-info__item:hover {
  border-color: var(--orange-500);
  box-shadow: var(--shadow-sm);
}
.contact-info__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--orange-50);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange-500);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-info__label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.contact-info__value {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* 联系表单 */
.contact-form-card {
  padding: 36px;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-group label .required { color: #DC2626; }

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-white);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--duration-fast);
}
.form-control:focus {
  outline: none;
  border-color: var(--orange-500);
  box-shadow: 0 0 0 3px var(--orange-50);
}
textarea.form-control {
  resize: vertical;
  min-height: 100px;
}
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23737373' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

/* 地图 */
.contact-map {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  margin-top: 28px;
}
.contact-map iframe,
.contact-map .map-container {
  width: 100%;
  height: 320px;
  border: none;
  display: block;
}

/* ============================================================
   关于我们 — 发展历程（时间线）
   ============================================================ */
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border-medium);
}
.timeline__item {
  position: relative;
  padding-bottom: 28px;
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--orange-500);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 3px var(--orange-50);
}
.timeline__year {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--orange-500);
  margin-bottom: 4px;
}
.timeline__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ============================================================
   服务支持 — 流程步骤
   ============================================================ */
.service-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.service-step {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  position: relative;
}
.service-step__num {
  width: 44px;
  height: 44px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--orange-500);
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.service-step__title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.service-step__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* FAQ */
.faq-list { max-width: 800px; }
.faq-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
}
.faq-item__q {
  padding: 16px 20px;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--gray-50);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--duration-fast);
}
.faq-item__q:hover { background: var(--gray-100); }
.faq-item__q i { transition: transform var(--duration-normal); color: var(--orange-500); }
.faq-item.open .faq-item__q i { transform: rotate(180deg); }
.faq-item__a {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: all var(--duration-normal);
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
}
.faq-item.open .faq-item__a {
  padding: 16px 20px;
  max-height: 500px;
}

/* ============================================================
   搜索页
   ============================================================ */
.search-box { max-width: 650px; margin: 0 auto; }
.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-light);
}
.search-input-wrap input {
  width: 100%;
  padding: 14px 18px 14px 44px;
  background: var(--bg-white);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
}
.search-input-wrap input:focus {
  outline: none;
  border-color: var(--orange-500);
  box-shadow: 0 0 0 3px var(--orange-50);
}

.search-result-item {
  display: flex;
  gap: 16px;
  padding: 18px;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast);
  margin-bottom: 10px;
}
.search-result-item:hover {
  border-color: var(--orange-500);
  box-shadow: var(--shadow-sm);
}
.search-result-item__thumb {
  width: 120px;
  height: 90px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--gray-100);
}
.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: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.search-result-item__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   分页
   ============================================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
  margin-top: 48px;
}
.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);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-white);
  transition: all var(--duration-fast);
}
.pagination a:hover {
  border-color: var(--orange-500);
  color: var(--orange-500);
  background: var(--orange-50);
}
.pagination .active {
  background: var(--orange-500);
  color: var(--white);
  border-color: var(--orange-500);
  font-weight: 600;
}
.pagination .disabled {
  color: var(--text-light);
  pointer-events: none;
}

/* ============================================================
   空状态
   ============================================================ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}
.empty-state i {
  font-size: 3rem;
  color: var(--text-light);
  margin-bottom: 16px;
  display: block;
}
.empty-state p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  border-top: 3px solid var(--orange-500);
}
.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: 0.88rem;
  color: var(--text-on-dark-muted);
  line-height: 1.75;
  margin: 16px 0;
}
.footer__social {
  display: flex;
  gap: 10px;
}
.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-on-dark-muted);
  font-size: 0.95rem;
  transition: all var(--duration-fast);
}
.footer__social a:hover {
  background: var(--orange-500);
  color: var(--white);
}
.footer__col-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 20px;
  position: relative;
}
.footer__col-title::after {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: var(--orange-500);
  margin-top: 8px;
}
.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer__links a {
  font-size: 0.88rem;
  color: var(--text-on-dark-muted);
  transition: color var(--duration-fast);
}
.footer__links a:hover { color: var(--orange-400); }

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-on-dark-muted);
  margin-bottom: 10px;
  line-height: 1.6;
}
.footer__contact-item i {
  color: var(--orange-500);
  margin-top: 3px;
  flex-shrink: 0;
}

.footer__qrcode {
  width: 110px;
  height: 110px;
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: #999;
}

.footer__bottom {
  border-top: 1px solid var(--border-dark);
  padding: 20px 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: 0.8rem;
  color: var(--text-on-dark-muted);
  flex-wrap: wrap;
  gap: 8px;
}
.footer__bottom a { color: var(--text-on-dark-muted); }
.footer__bottom a:hover { color: var(--orange-400); }

/* 友情链接 */
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  padding: 16px 0;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.friend-links__label {
  font-size: 0.82rem;
  color: var(--text-on-dark-muted);
  flex-shrink: 0;
}
.friend-links a {
  font-size: 0.82rem;
  color: var(--text-on-dark-muted);
  transition: color var(--duration-fast);
}
.friend-links a:hover { color: var(--orange-400); }

/* ============================================================
   返回顶部
   ============================================================ */
.back-top {
  position: fixed;
  right: 20px;
  bottom: 80px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-dark);
  border: none;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: pointer;
  z-index: 80;
  opacity: 0;
  pointer-events: none;
  transition: all var(--duration-normal);
}
.back-top.show {
  opacity: 1;
  pointer-events: auto;
}
.back-top:hover {
  background: var(--orange-500);
}

/* ============================================================
   在线客服悬浮
   ============================================================ */
.float-service {
  position: fixed;
  right: 20px;
  bottom: 140px;
  z-index: 80;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.float-service__btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all var(--duration-fast);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.float-service__btn:hover {
  background: var(--orange-500);
  color: var(--white);
  border-color: var(--orange-500);
}
.float-service__popup {
  position: absolute;
  right: 56px;
  bottom: 0;
  width: 200px;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(8px);
  transition: all var(--duration-normal);
  text-align: center;
}
.float-service__btn:hover .float-service__popup {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}
.float-service__popup img {
  width: 120px;
  height: 120px;
  margin: 0 auto 8px;
  background: var(--gray-100);
}
.float-service__popup p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   动画增强
   ============================================================ */

/* 数字滚动高亮 */
.stat-item__number .countup {
  display: inline-block;
}

/* 卡片入场微调 */
[data-aos] {
  transition-timing-function: var(--ease-out);
}

/* 按钮点击反馈 */
.btn:active {
  transform: scale(0.97);
}

/* 工厂视频hover */
.factory-video:hover .factory-video__play {
  box-shadow: 0 6px 30px rgba(230, 92, 30, 0.6);
}

/* ============================================================
   偏好：减少动画
   ============================================================ */
@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;
  }
}

/* ============================================================
   响应式 — 平板 (768px - 1023px)
   ============================================================ */
@media (max-width: 1023px) {
  :root {
    --section-py: 64px;
    --section-py-sm: 44px;
  }

  .header__nav,
  .header__actions {
    display: none;
  }
  .hamburger { display: flex; }

  .features { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 24px 16px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .list-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: 1fr; gap: 20px; }

  .factory-showcase {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .factory-text__stats { grid-template-columns: repeat(3, 1fr); }

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

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

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

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

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

  .mobile-quick-bar { display: block; }
  body { padding-bottom: 56px; }

  .back-top { bottom: 100px; }

  .hero {
    height: 80vh;
    min-height: 500px;
    max-height: 650px;
  }
  .hero__scroll { bottom: 80px; }

  .inner-banner { height: 240px; }

  .detail__pager { flex-direction: column; gap: 10px; text-align: center; }
}

/* ============================================================
   响应式 — 移动端 (< 768px)
   ============================================================ */
@media (max-width: 767px) {
  :root {
    --section-py: 48px;
    --section-py-sm: 36px;
    --header-h: 64px;
  }

  body { font-size: 14px; }

  .container { padding: 0 16px; }

  .header__logo-sub { display: none; }

  .hero {
    height: 75vh;
    min-height: 440px;
    max-height: 560px;
  }
  .hero__content { padding-top: 50px; }
  .hero__title { font-size: clamp(1.5rem, 7vw, 2rem); }
  .hero__actions { flex-direction: column; gap: 10px; }
  .hero__scroll { display: none; }
  .hero-pagination { bottom: 24px; }

  .inner-banner { height: 200px; }
  .inner-banner__content { padding-top: 0; }

  .features { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: 1fr; }
  .list-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: 1fr; }

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

  .news-item { flex-direction: column; }
  .news-item__thumb { width: 100%; height: 180px; }

  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom-inner { flex-direction: column; text-align: center; }

  .service-steps { grid-template-columns: 1fr; }

  .contact-form-card { padding: 24px; }

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

  .search-result-item { flex-direction: column; }
  .search-result-item__thumb { width: 100%; height: 160px; }

  .cta-block { padding: 56px 16px; }

  .float-service { right: 12px; bottom: 120px; }
  .back-top { right: 12px; bottom: 80px; }

  .friend-links { justify-content: center; }
}

/* ============================================================
   响应式 — 小屏 (< 375px)
   ============================================================ */
@media (max-width: 374px) {
  .stats { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .detail__params { grid-template-columns: 1fr; }
}