/**
 * 制造业企业站 — 工业稳重风样式
 * 主色：深灰 #1A1A1A / #2D2D2D + 银灰边框 + 橙金点缀
 * 卡片：深色底+银色细边框，小圆角，工业制造手册排版
 * 字体：Inter (标题/数字) + Noto Sans SC (中文正文)
 * 纯原生 CSS，无框架依赖
 */


/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* 背景色 */
  --bg-white: #FFFFFF;
  --bg-light: #F5F5F5;
  --bg-deep: #1A1A1A;
  --bg-card: #2D2D2D;
  --bg-overlay: rgba(0, 0, 0, 0.65);

  /* 文字色 */
  --text-dark: #1A1A1A;
  --text-body: #444444;
  --text-muted: #888888;
  --text-light: #A0AEC0;
  --text-white: #FFFFFF;

  /* 点缀色 */
  --gold: #D4A853;
  --gold-hover: #C4963F;
  --gold-dim: rgba(212, 168, 83, 0.12);
  --orange: #E07B39;
  --orange-dim: rgba(224, 123, 57, 0.1);
  --silver: #A0AEC0;
  --silver-border: #D1D5DB;

  /* 边框 */
  --border: #E5E7EB;
  --border-dark: rgba(255, 255, 255, 0.12);
  --border-card: rgba(160, 174, 192, 0.3);

  /* 阴影 */
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.06);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
  --shadow-gold: 0 0 0 3px rgba(212, 168, 83, 0.2);

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* 间距 */
  --section-py: 64px;
  --container-w: 1200px;
  --header-h: 70px;

  /* 过渡 */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 200ms;
  --dur-slow: 400ms;

  /* 字体 — Inter(标题/英文/数字) + Noto Sans SC(中文正文) + Rajdhani(数据) */
  --font-heading: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  --font-data: 'Rajdhani', 'Inter', 'Noto Sans SC', sans-serif;
  --font-mono: 'SF Mono', 'Cascadia 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-white);
  color: var(--text-body);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(212, 168, 83, 0.25); color: var(--text-dark); }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-light); }
::-webkit-scrollbar-thumb { background: var(--silver); border-radius: 3px; }

a { color: inherit; text-decoration: none; transition: color var(--dur) var(--ease); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
input, textarea, select, button { font-family: inherit; font-size: inherit; }

/* ============================================================
   排版
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.35;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.section-tag--orange { color: var(--orange); }

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.section-title--light { color: var(--text-white); }

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

/* ============================================================
   布局
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: var(--section-py) 0; }
.section--dark { background: var(--bg-deep); }
.section--light { background: var(--bg-light); }
.section--tight { padding: 60px 0; }

/* ============================================================
   Header — 深色固定
   ============================================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--bg-deep);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: box-shadow var(--dur-slow) var(--ease);
}

.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.4); }

.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--container-w);
  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: 38px; height: 38px;
  background: var(--gold);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: #fff;
}

.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: 0.02em;
}

.header__logo-sub {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
}

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

.header__nav-link {
  padding: 8px 15px;
  font-size: 0.88rem;
  color: var(--text-light);
  border-radius: var(--radius-sm);
  transition: all var(--dur) var(--ease);
  white-space: nowrap;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--gold);
  background: rgba(255,255,255,0.05);
}

/* 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: 0;
  min-width: 160px; padding: 6px 0;
  background: #2D2D2D;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  opacity: 0; visibility: hidden;
  transform: translateY(8px);
  transition: all var(--dur-slow) var(--ease);
  z-index: 60;
}

.header__dropdown a {
  display: block; padding: 10px 20px;
  font-size: 0.85rem; color: var(--text-light);
  transition: all var(--dur) var(--ease);
}
.header__dropdown a:hover { color: var(--gold); background: rgba(255,255,255,0.05); }

/* 右侧 CTA */
.header__cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; margin-left: 18px;
  background: var(--orange);
  color: #fff; font-size: 0.85rem; font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--dur) var(--ease);
  flex-shrink: 0;
}
.header__cta:hover { background: #C96A2E; color: #fff; transform: translateY(-1px); }

/* 汉堡菜单 */
.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-white); border-radius: 1px;
  transition: all var(--dur-slow) var(--ease);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 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: 340px;
  background: #1A1A1A; z-index: 120;
  transform: translateX(-100%);
  transition: transform var(--dur-slow) var(--ease);
  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: 0.95rem; color: var(--text-light);
  border-radius: var(--radius-sm);
  transition: all var(--dur) var(--ease);
}
.mobile-nav__link:hover { color: var(--gold); background: rgba(255,255,255,0.04); }

.mobile-nav__sub { padding-left: 12px; display: none; }
.mobile-nav__sub.open { display: block; }
.mobile-nav__sub a {
  display: block; padding: 10px 16px;
  font-size: 0.88rem; color: var(--text-muted);
  border-radius: var(--radius-sm);
}

.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(--dur-slow) var(--ease);
}
.mobile-nav__overlay.show { opacity: 1; pointer-events: auto; }

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative; height: 320px; overflow: hidden;
  background: var(--bg-deep);
}
.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(26,26,26,0.7) 0%, rgba(26,26,26,0.4) 50%, rgba(26,26,26,0.85) 100%);
}
.inner-banner__content {
  position: relative; height: 100%;
  display: flex; flex-direction: column; justify-content: center;
  max-width: var(--container-w); 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; }
.inner-banner__subtitle { font-size: 1rem; color: var(--silver); }

/* 面包屑 */
.breadcrumb-bar { background: var(--bg-light); border-bottom: 1px solid var(--border); }
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  max-width: var(--container-w); margin: 0 auto; padding: 12px 24px;
  font-size: 0.82rem; color: var(--text-muted);
}
.breadcrumb a { color: var(--text-body); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb i { font-size: 0.6rem; color: var(--text-muted); }

/* ============================================================
   按钮系统
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px; font-size: 0.9rem; font-weight: 600;
  border-radius: var(--radius-sm); border: none; cursor: pointer;
  transition: all var(--dur-slow) var(--ease); white-space: nowrap;
}

.btn--primary {
  background: var(--orange); color: #fff;
}
.btn--primary:hover { background: #C96A2E; color: #fff; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(224,123,57,0.35); }

.btn--gold {
  background: var(--gold); color: #fff;
}
.btn--gold:hover { background: var(--gold-hover); color: #fff; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(212,168,83,0.4); }

.btn--outline {
  background: transparent; color: var(--text-dark);
  border: 1.5px solid var(--silver-border);
}
.btn--outline:hover { border-color: var(--gold); color: var(--gold); }

.btn--outline-light {
  background: transparent; color: var(--text-white);
  border: 1.5px solid rgba(255,255,255,0.3);
}
.btn--outline-light:hover { border-color: var(--gold); color: var(--gold); }

.btn--ghost {
  background: rgba(255,255,255,0.04); color: var(--text-light);
  border: 1px solid var(--border-dark);
}
.btn--ghost:hover { background: rgba(255,255,255,0.08); color: var(--text-white); }

.btn--sm { padding: 8px 18px; font-size: 0.82rem; }

/* ============================================================
   卡片系统 — 深色底 + 银边框
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--dur-slow) var(--ease);
}
.card:hover {
  border-color: var(--gold);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
  transform: translateY(-3px);
}

.card__image {
  position: relative; overflow: hidden;
  aspect-ratio: 4 / 3;
  background: #3A3A3A;
}
.card__image img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.card:hover .card__image img { transform: scale(1.06); }

.card__body { padding: 20px; }
.card__tag {
  display: inline-block; padding: 2px 10px;
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.06em;
  color: var(--gold); background: var(--gold-dim);
  border-radius: 3px; margin-bottom: 8px;
}
.card__title {
  font-family: var(--font-heading); font-size: 1.02rem; font-weight: 600;
  color: var(--text-white); margin-bottom: 6px;
  display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
.card__desc {
  font-size: 0.85rem; color: var(--text-light); 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: 14px;
  margin-top: 12px; padding-top: 12px;
  border-top: 1px solid var(--border-dark);
  font-size: 0.78rem; color: var(--silver);
}

/* 白色卡片变体 */
.card--light {
  background: #fff; border: 1px solid var(--border);
}
.card--light:hover { border-color: var(--gold); box-shadow: var(--shadow); }
.card--light .card__title { color: var(--text-dark); }
.card--light .card__desc { color: var(--text-body); }
.card--light .card__meta { border-top-color: var(--border); color: var(--text-muted); }

/* ============================================================
   Hero / Banner Swiper
   ============================================================ */
.hero {
  position: relative; height: 100vh; min-height: 600px; max-height: 850px;
  overflow: hidden; background: var(--bg-deep);
}
.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(26,26,26,0.35) 0%,
    rgba(26,26,26,0.2) 35%,
    rgba(26,26,26,0.75) 85%,
    rgba(26,26,26,0.9) 100%);
}
.hero__content {
  position: relative; z-index: 3;
  height: 100%; display: flex; flex-direction: column; justify-content: center;
  max-width: var(--container-w); margin: 0 auto; padding: 0 24px;
}
.hero__tag {
  display: inline-block; font-size: 0.85rem; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 1rem;
}
.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.5vw, 3.75rem);
  font-weight: 800; color: #fff;
  line-height: 1.15; margin-bottom: 1rem;
  max-width: 700px;
  text-shadow: 0 2px 30px rgba(0,0,0,0.5);
}
.hero__subtitle {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--silver); margin-bottom: 2rem;
  max-width: 550px; font-weight: 400;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-pagination {
  display: flex; justify-content: flex-start; gap: 10px;
  margin-top: 32px; margin-left: 0;
}
.hero-pagination .swiper-pagination-bullet {
  width: 48px; height: 3px; border-radius: 2px;
  background: rgba(255,255,255,0.3); opacity: 1;
  transition: all var(--dur-slow);
}
.hero-pagination .swiper-pagination-bullet-active {
  width: 72px; background: var(--gold);
}

/* 滚动指示器 */
.hero__scroll {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  z-index: 5; display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(255,255,255,0.4); font-size: 0.65rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  animation: scrollPulse 2s ease-in-out infinite;
}
.hero__scroll-line {
  width: 1px; height: 28px;
  background: linear-gradient(180deg, var(--gold), transparent);
}

@keyframes scrollPulse {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.6; }
  50% { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

/* ============================================================
   首页 — 企业数据
   ============================================================ */
.stats-section {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
  padding: 56px 0;
}
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item__number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800; color: var(--gold);
  line-height: 1.1; margin-bottom: 6px;
}
.stat-item__unit { font-size: 1rem; color: var(--gold); }
.stat-item__label { font-size: 0.85rem; color: var(--silver); }

/* ============================================================
   首页 — 产品系列网格
   ============================================================ */
.product-series { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.series-card {
  background: var(--bg-card); border: 1px solid var(--border-dark);
  border-radius: var(--radius-md); padding: 36px 24px; text-align: center;
  transition: all var(--dur-slow) var(--ease); cursor: pointer;
}
.series-card:hover { border-color: var(--gold); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.series-card__icon {
  width: 60px; height: 60px; margin: 0 auto 16px;
  background: var(--orange-dim); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: var(--orange);
  transition: all var(--dur-slow) var(--ease);
}
.series-card:nth-child(1) .series-card__icon { background: rgba(224,123,57,0.12); color: var(--orange); }
.series-card:nth-child(2) .series-card__icon { background: rgba(212,168,83,0.12); color: var(--gold); }
.series-card:nth-child(3) .series-card__icon { background: rgba(160,174,192,0.12); color: var(--silver); }
.series-card:nth-child(4) .series-card__icon { background: rgba(100,140,180,0.12); color: #648CB4; }
.series-card:hover .series-card__icon { background: var(--orange); color: #fff; }
.series-card__name {
  font-family: var(--font-heading); font-size: 1.05rem; font-weight: 600;
  color: var(--text-white); margin-bottom: 4px;
}
.series-card__count { font-size: 0.8rem; color: var(--silver); }

/* ============================================================
   首页 — 关于我们 左图右文
   ============================================================ */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
}
.about-image {
  position: relative; border-radius: var(--radius-md); overflow: hidden;
  aspect-ratio: 3/2; background: var(--bg-light);
  border: 1px solid var(--border);
}
.about-image img { width: 100%; height: 100%; object-fit: cover; }
.about-image::before {
  content: ''; position: absolute; top: 16px; left: -16px;
  width: 100%; height: 100%; border: 2px solid var(--gold);
  border-radius: var(--radius-md); z-index: -1;
}
.about-text { display: flex; flex-direction: column; gap: 10px; }
.about-text p { color: var(--text-body); line-height: 1.6; }

/* 资质徽章 */
.badges { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }
.badge-item {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px; background: var(--bg-light);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 0.8rem; font-weight: 600; color: var(--text-dark);
}
.badge-item i { color: var(--gold); font-size: 0.85rem; }

/* ============================================================
   首页 — 生产制造展示
   ============================================================ */
.mfg-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.mfg-item {
  position: relative; border-radius: var(--radius-md); overflow: hidden;
  aspect-ratio: 4/3; cursor: pointer;
  border: 1px solid var(--border-dark);
}
.mfg-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.mfg-item:hover img { transform: scale(1.08); }
.mfg-item__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(transparent 40%, rgba(0,0,0,0.7));
  display: flex; align-items: flex-end; padding: 20px;
  transition: opacity var(--dur-slow);
}
.mfg-item__label {
  font-family: var(--font-heading); font-size: 1rem; font-weight: 600; color: #fff;
}

/* ============================================================
   首页 — CTA
   ============================================================ */
.cta-section {
  text-align: center; padding: 72px 0;
  background: var(--bg-deep); position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: linear-gradient(90deg, transparent, var(--orange), var(--gold), transparent);
}
.cta-section__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  color: var(--text-white); margin-bottom: 0.5rem;
}
.cta-section__desc { color: var(--silver); font-size: 1rem; margin-bottom: 28px; }
.cta-section .btn { margin: 0 8px 10px; }

/* ============================================================
   列表页 — 网格
   ============================================================ */
.list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.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: 6px; 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: 7px 16px;
  font-size: 0.82rem; font-weight: 500;
  color: var(--text-body); background: #fff;
  border: 1px solid var(--border); border-radius: 100px;
  white-space: nowrap; flex-shrink: 0;
  transition: all var(--dur) var(--ease);
}
.filter-bar a:hover, .filter-bar a.active {
  color: var(--gold); border-color: var(--gold); background: var(--gold-dim);
}

/* ============================================================
   详情页
   ============================================================ */
.detail { max-width: 950px; margin: 0 auto; }

.detail-gallery {
  border-radius: var(--radius-md); overflow: hidden;
  margin-bottom: 36px; background: var(--bg-light);
}
.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); }
.detail__title { font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom: 10px; }
.detail__meta-row {
  display: flex; flex-wrap: wrap; gap: 20px;
  font-size: 0.82rem; color: var(--text-muted);
}
.detail__meta-row i { margin-right: 4px; color: var(--gold); }

/* 产品参数卡片 */
.detail__params {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px; margin-bottom: 32px;
}
.detail__param {
  padding: 16px; text-align: center;
  background: var(--bg-light); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.detail__param-label { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 2px; }
.detail__param-value {
  font-family: var(--font-heading); font-size: 1rem; font-weight: 700; color: var(--text-dark);
}

.detail__body {
  color: var(--text-body); line-height: 2; font-size: 0.95rem;
}
.detail__body img { border-radius: var(--radius-md); margin: 20px 0; }
.detail__body p { margin-bottom: 14px; }
.detail__body h2, .detail__body h3 { color: var(--text-dark); margin: 28px 0 12px; }

/* 上下篇 */
.detail__pager {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 44px; padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem; color: var(--text-muted);
}
.detail__pager a { color: var(--text-body); }
.detail__pager a:hover { color: var(--gold); }

/* 相关推荐 */
.related-title { font-size: 1.25rem; font-weight: 700; margin: 48px 0 20px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* ============================================================
   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: 14px;
  padding: 18px; background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-md); margin-bottom: 10px;
  transition: all var(--dur) var(--ease);
}
.contact-info__item:hover { border-color: var(--gold); }
.contact-info__icon {
  width: 42px; height: 42px; border-radius: var(--radius-sm);
  background: var(--orange-dim); display: flex; align-items: center; justify-content: center;
  color: var(--orange); flex-shrink: 0; font-size: 1rem;
}
.contact-info__label { font-size: 0.8rem; font-weight: 600; color: var(--text-dark); margin-bottom: 2px; }
.contact-info__value { font-size: 0.88rem; color: var(--text-body); }

.contact-form-card {
  padding: 32px; background: var(--bg-light);
  border: 1px solid var(--border); border-radius: var(--radius-md);
}
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; color: var(--text-body); margin-bottom: 4px; font-weight: 500; }
.form-group label .required { color: var(--orange); }
.form-control {
  width: 100%; padding: 12px 16px;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-dark);
  font-size: 0.9rem; transition: all var(--dur) var(--ease);
}
.form-control:focus { outline: none; border-color: var(--gold); box-shadow: var(--shadow-gold); }
textarea.form-control { resize: vertical; min-height: 100px; }

/* ============================================================
   搜索页
   ============================================================ */
.search-box { max-width: 680px; 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-muted);
}
.search-input-wrap input {
  width: 100%; padding: 14px 20px 14px 42px;
  background: #fff; border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); font-size: 0.95rem;
}
.search-input-wrap input:focus { outline: none; border-color: var(--gold); box-shadow: var(--shadow-gold); }

.search-result-item {
  display: flex; gap: 16px; padding: 18px;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-md); margin-bottom: 10px;
  transition: all var(--dur) var(--ease);
}
.search-result-item:hover { border-color: var(--gold); box-shadow: var(--shadow-sm); }
.search-result-item__thumb {
  width: 110px; height: 80px; border-radius: var(--radius-sm);
  overflow: hidden; flex-shrink: 0; background: var(--bg-light);
}
.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-dark); margin-bottom: 4px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.search-result-item__date { font-size: 0.76rem; color: var(--text-muted); margin-bottom: 4px; }
.search-result-item__desc {
  font-size: 0.85rem; color: var(--text-body);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ============================================================
   新闻列表
   ============================================================ */
.news-list__item {
  display: flex; gap: 24px; padding: 24px;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-md); margin-bottom: 14px;
  transition: all var(--dur) var(--ease);
}
.news-list__item:hover { border-color: var(--gold); box-shadow: var(--shadow-sm); }
.news-list__thumb {
  width: 200px; height: 140px; border-radius: var(--radius-sm);
  overflow: hidden; flex-shrink: 0; background: var(--bg-light);
}
.news-list__thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-list__info { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.news-list__date { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 6px; }
.news-list__info h3 {
  font-size: 1.1rem; font-weight: 600; margin-bottom: 8px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.news-list__info p {
  font-size: 0.9rem; color: var(--text-body);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ============================================================
   案例卡片
   ============================================================ */
.case-card {
  position: relative; border-radius: var(--radius-md); overflow: hidden;
  aspect-ratio: 4/3; background: var(--bg-card);
}
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.case-card:hover img { transform: scale(1.08); }
.case-card__info {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 20px; background: linear-gradient(transparent, rgba(0,0,0,0.85));
}
.case-card__title { font-family: var(--font-heading); font-size: 1rem; font-weight: 600; color: #fff; }
.case-card__tag { font-size: 0.75rem; color: var(--gold); margin-bottom: 4px; }

/* ============================================================
   分页
   ============================================================ */
.pagination { display: flex; justify-content: center; align-items: center; gap: 4px; margin-top: 44px; }
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px; padding: 0 8px;
  font-size: 0.85rem; color: var(--text-body);
  border-radius: var(--radius-sm);
  transition: all var(--dur) var(--ease);
}
.pagination a:hover { background: var(--bg-light); color: var(--text-dark); }
.pagination .active { background: var(--gold); color: #fff; font-weight: 600; }
.pagination .disabled { color: var(--text-muted); pointer-events: none; }

/* 空状态 */
.empty-state { text-align: center; padding: 60px 20px; }
.empty-state i { font-size: 2.5rem; color: var(--silver); margin-bottom: 12px; display: block; }
.empty-state p { color: var(--text-muted); font-size: 0.9rem; }

/* ============================================================
   Footer
   ============================================================ */
.footer { background: var(--bg-deep); border-top: 3px solid var(--gold); }
.footer__grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px;
  padding: 56px 0 36px;
  max-width: var(--container-w); margin: 0 auto;
  padding-left: 24px; padding-right: 24px;
}
.footer__brand-desc {
  font-size: 0.85rem; color: var(--silver); line-height: 1.8; margin: 14px 0;
}
.footer__social { display: flex; gap: 10px; }
.footer__social a {
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center;
  color: var(--silver); font-size: 0.9rem;
  transition: all var(--dur) var(--ease);
}
.footer__social a:hover { background: var(--gold); color: #fff; }

.footer__col-title {
  font-family: var(--font-heading); font-size: 1rem; font-weight: 600;
  color: var(--text-white); margin-bottom: 18px;
}
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a { font-size: 0.85rem; color: var(--silver); }
.footer__links a:hover { color: var(--gold); }

/* 快速导航条：默认隐藏（仅手机端显示） */
.footer__quicknav { display: none; }

.footer__contact-item {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.82rem; color: var(--silver); margin-bottom: 10px;
}
.footer__contact-item i { color: var(--gold); margin-top: 3px; flex-shrink: 0; }

.footer__qrcode {
  width: 100px; height: 100px; background: #fff;
  border-radius: var(--radius-sm); padding: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.65rem; color: #999;
}

.footer__bottom { border-top: 1px solid var(--border-dark); padding: 18px 0; }
.footer__bottom-inner {
  display: flex; justify-content: space-between; align-items: center;
  max-width: var(--container-w); 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); }
.footer__bottom a:hover { color: var(--gold); }

/* ============================================================
   友情链接
   ============================================================ */
.friend-links {
  display: flex; flex-wrap: wrap; gap: 16px; align-items: center; padding: 16px 0;
  max-width: var(--container-w); margin: 0 auto; padding-left: 24px; padding-right: 24px;
}
.friend-links__label { font-size: 0.8rem; color: var(--silver); flex-shrink: 0; }
.friend-links a { font-size: 0.8rem; color: var(--silver); }
.friend-links a:hover { color: var(--gold); }

/* ============================================================
   返回顶部 & 在线客服
   ============================================================ */
.back-top {
  position: fixed; right: 20px; bottom: 100px;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--bg-deep); border: 1px solid var(--border-dark);
  color: var(--silver); display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; cursor: pointer; z-index: 80;
  opacity: 0; pointer-events: none;
  transition: all var(--dur-slow) var(--ease);
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--gold); color: #fff; border-color: var(--gold); }

.kefu-btn {
  position: fixed; right: 20px; bottom: 50px;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--orange); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; cursor: pointer; z-index: 80;
  box-shadow: 0 4px 16px rgba(224,123,57,0.4);
  transition: all var(--dur) var(--ease);
}
.kefu-btn:hover { transform: scale(1.1); }

/* ============================================================
   动画
   ============================================================ */
@keyframes fadeInUp {
  0% { opacity: 0; transform: translateY(30px); }
  100% { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

.hero__title { animation: fadeInUp 0.8s var(--ease) both; }
.hero__subtitle { animation: fadeInUp 0.8s var(--ease) 0.15s both; }
.hero__actions { animation: fadeInUp 0.8s var(--ease) 0.3s both; }
.hero__tag { animation: fadeInUp 0.8s var(--ease) both; }

/* AOS 覆盖 */
[data-aos] { transition-timing-function: var(--ease); }

/* ============================================================
   响应式 — 平板 (< 1024px)
   ============================================================ */
@media (max-width: 1023px) {
  :root { --section-py: 48px; }

  html, body { width: 100%; max-width: 100vw; }
  .container { width: 100%; box-sizing: border-box; }

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

  .stats { grid-template-columns: repeat(2, 1fr); }
  .product-series { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-image::before { display: none; }
  .mfg-gallery { grid-template-columns: repeat(2, 1fr); }

  .list-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }

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

  .detail__pager { flex-direction: column; gap: 8px; text-align: center; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }

  .hero__actions { gap: 10px; }
}

/* ============================================================
   响应式 — 手机 (< 768px)
   ============================================================ */
@media (max-width: 767px) {
  :root { --section-py: 36px; }

  html, body { overflow-x: hidden; width: 100%; max-width: 100vw; }
  body { font-size: 14px; }

  /* 所有容器居中 */
  .container { padding: 0 16px; width: 100%; box-sizing: border-box; }
  .section { width: 100%; overflow: hidden; }

  /* Header 全宽 */
  .header { width: 100%; left: 0; right: 0; }
  .header__inner { padding: 0 16px; }
  .header__logo-name { font-size: 0.9rem; }
  .header__logo-sub { font-size: 0.5rem; }

  /* Hero（手机端轮播图调矮） */
  .hero { height: 60vh; min-height: 380px; max-height: 480px; width: 100%; }
  .hero__content { padding: 0 16px 40px; text-align: left; }
  .hero__title { font-size: clamp(1.5rem, 6vw, 2rem); }
  .hero__subtitle { font-size: 0.88rem; }
  .hero__scroll { display: none; }
  .hero-pagination { margin-top: 20px; }
  .hero__actions { flex-direction: column; gap: 10px; }
  .hero__actions .btn { width: 100%; justify-content: center; }

  /* 内页banner */
  .inner-banner { height: 200px; }
  .inner-banner__content { padding: 0 16px; }
  .inner-banner__title { font-size: 1.35rem; }

  .stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stat-item__number { font-size: 1.5rem; }
  /* 产品系列：手机端 4 个一排 */
  .product-series { grid-template-columns: repeat(4, 1fr); }
  .mfg-gallery { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .list-grid { grid-template-columns: 1fr; gap: 16px; }
  .contact-grid { grid-template-columns: 1fr; }

  .about-grid { grid-template-columns: 1fr; gap: 24px; }
  .about-image::before { display: none; }

  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .footer__bottom-inner { flex-direction: column; text-align: center; }

  /* 快速导航：手机端隐藏原列，显示整行横排导航条 */
  .footer__quicknav-col { display: none; }
  .footer__quicknav {
    display: flex; align-items: center; justify-content: center;
    flex-wrap: wrap; gap: 6px 10px;
    padding: 14px 16px 4px; font-size: 0.8rem;
  }
  .footer__quicknav a { color: var(--silver); }
  .footer__quicknav a:hover { color: var(--gold); }
  .footer__quicknav-divider { color: var(--border-dark); }

  .news-list__item { flex-direction: column; padding: 16px; }
  .news-list__thumb { width: 100%; height: 160px; }
  .search-result-item { flex-direction: column; }
  .search-result-item__thumb { width: 100%; height: 140px; }

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

  .contact-form-card { padding: 20px; }
  .hero-pagination { justify-content: center; }

  .card__body { padding: 14px; }
  .card__title { font-size: 0.95rem; }

  /* 产品系列卡片：手机端压缩为紧凑图标格（4 个一排） */
  .product-series { gap: 8px; }
  .series-card { padding: 14px 4px 10px; }
  .series-card__icon { width: 36px; height: 36px; margin-bottom: 8px; font-size: 1.1rem; border-radius: 8px; }
  .series-card__name { font-size: 0.74rem; line-height: 1.35; margin-bottom: 0; }
  .series-card__count { display: none; }

  .back-top, .kefu-btn { right: 12px; }
  .back-top { bottom: 80px; }
  .kefu-btn { bottom: 36px; }

  /* 所有img不超出屏幕 */
  img { max-width: 100%; height: auto; }
  table { max-width: 100%; display: block; overflow-x: auto; }
}

/* ============================================================
   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;
  }
}