/**
 * PackMate 包装制造 — 企业站主样式
 * 色调：深蓝 #1A2E3E + 钢灰 #2D3A45 + 白色 + 明黄 #F5A623 点缀
 * 风格：工业力量感、直角硬朗、信息密集型
 * 依赖：Font Awesome 6 CDN、Swiper 11 CDN、AOS 2.x CDN
 * 断点：768px（平板/手机）
 */

/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* 主色 — 深蓝工业基底 */
  --blue-deep: #1A2E3E;
  --blue-dark: #223B4E;
  --blue-mid: #2C4A5F;
  --blue-pale: #3A5A70;

  /* 灰色系 — 层次过渡 */
  --gray-steel: #2D3A45;
  --gray-mid: #3E4E5C;
  --gray-light: #6B7B8D;
  --gray-border: #D0D5DA;
  --gray-bg: #F0F2F4;
  --gray-pale: #F7F8F9;

  /* 点缀色 — 明黄/橙（仅CTA和数据高亮） */
  --accent-yellow: #F5A623;
  --accent-orange: #E87722;
  --accent-yellow-dim: rgba(245, 166, 35, 0.12);

  /* 文字色阶 */
  --text-primary: #1A1D20;
  --text-secondary: #555B63;
  --text-muted: #8B9199;
  --text-white: #FFFFFF;

  /* 边框 */
  --border-light: #E4E7EB;
  --border-card: rgba(0, 0, 0, 0.06);

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
  --shadow-card-hover: 0 6px 20px rgba(0, 0, 0, 0.12);

  /* 圆角 — 直角为主 */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;

  /* 间距 */
  --section-py: 90px;
  --container-max: 1200px;
  --header-h: 72px;

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

  /* 字体 */
  --font-heading: 'Microsoft YaHei', 'PingFang SC', 'Noto Sans SC', 'Hiragino Sans GB', 'STHeiti', 'Helvetica Neue', system-ui, sans-serif;
  --font-body: 'Microsoft YaHei', 'PingFang SC', 'Noto Sans SC', 'Hiragino Sans GB', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-number: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', 'Monaco', monospace;
}

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

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

body {
  background: var(--text-white);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: 0.015em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection {
  background: var(--accent-yellow);
  color: #fff;
}

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;
}

/* 滚动条 */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--gray-bg); }
::-webkit-scrollbar-thumb { background: var(--gray-light); border-radius: 3px; }

/* ============================================================
   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: 0.02em;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-yellow);
  margin-bottom: 0.5rem;
  border-left: 3px solid var(--accent-yellow);
  padding-left: 10px;
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

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

/* ============================================================
   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--dark {
  background: var(--blue-deep);
  color: rgba(255,255,255,0.85);
}

.section--dark .section-title { color: #fff; }
.section--dark .section-subtitle { color: rgba(255,255,255,0.65); }
.section--dark .section-tag { color: var(--accent-yellow); border-color: var(--accent-yellow); }

.section--gray {
  background: var(--gray-bg);
}

/* ============================================================
   Header 头部 — 深色半透固定顶部
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(26, 46, 62, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: all var(--duration-normal) var(--ease-out);
}
.header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-yellow), var(--accent-orange));
}
.header.scrolled {
  background: rgba(26, 46, 62, 0.99);
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}

.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: var(--accent-yellow);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--blue-deep);
  font-weight: 700;
}

.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: #fff;
  letter-spacing: 0.02em;
}

.header__logo-sub {
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.5);
}

/* 主导航 */
.header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header__nav-link {
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  color: rgba(255,255,255,0.78);
  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: #fff;
  background: rgba(255,255,255,0.08);
}

/* 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: 8px 0;
  background: var(--blue-dark);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 36px rgba(0,0,0,0.4);
  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: 0.85rem;
  color: rgba(255,255,255,0.7);
  transition: all var(--duration-fast) var(--ease-out);
}

.header__dropdown a:hover {
  color: #fff;
  background: rgba(255,255,255,0.08);
}

/* 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: 10px 22px;
  background: var(--accent-yellow);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  transition: all var(--duration-fast) var(--ease-out);
}

.header__cta:hover {
  background: var(--accent-orange);
  color: #fff;
  box-shadow: 0 2px 12px rgba(245,166,35,0.4);
}

/* ============================================================
   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: 8px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  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; }
.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: var(--blue-deep);
  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: rgba(255,255,255,0.75);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.mobile-nav__link:hover {
  color: #fff;
  background: rgba(255,255,255,0.06);
}

.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: 0.88rem;
  color: rgba(255,255,255,0.55);
  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(--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: 12px 28px;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

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

.btn--primary:hover {
  background: var(--accent-orange);
  color: #fff;
  box-shadow: 0 4px 16px rgba(245,166,35,0.35);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--gray-border);
}

.btn--outline:hover {
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
  transform: translateY(-1px);
}

.btn--white {
  background: #fff;
  color: var(--blue-deep);
  font-weight: 700;
}

.btn--white:hover {
  background: var(--accent-yellow);
  color: #fff;
}

.btn--dark {
  background: var(--blue-deep);
  color: #fff;
}

.btn--dark:hover {
  background: var(--blue-dark);
  box-shadow: var(--shadow-md);
}

/* 询价按钮 — 明黄醒目 */
.btn--inquiry {
  background: var(--accent-yellow);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  padding: 14px 32px;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 16px rgba(245,166,35,0.3);
}

.btn--inquiry:hover {
  background: var(--accent-orange);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(245,166,35,0.4);
}

/* ============================================================
   Hero Banner — 全宽深色车间实景
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 800px;
  overflow: hidden;
  background: var(--blue-deep);
}

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

.hero .swiper-slide {
  background-size: cover;
  background-position: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg,
    rgba(26,46,62,0.4) 0%,
    rgba(26,46,62,0.25) 40%,
    rgba(26,46,62,0.7) 80%,
    rgba(26,46,62,0.9) 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;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 0.75rem;
  max-width: 700px;
  text-shadow: 0 2px 30px rgba(0,0,0,0.4);
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,0.8);
  margin-bottom: 2rem;
  max-width: 560px;
  font-weight: 400;
}

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

/* 进度条分页器 */
.hero-pagination {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 6px;
}

.hero-pagination .swiper-pagination-bullet {
  width: 48px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,0.3);
  opacity: 1;
  transition: all var(--duration-normal);
}

.hero-pagination .swiper-pagination-bullet-active {
  width: 72px;
  background: var(--accent-yellow);
}

/* 滚动指示器 */
.hero__scroll-indicator {
  position: absolute;
  bottom: 24px;
  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: scrollFloat 2s ease-in-out infinite;
}

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

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

/* ============================================================
   产能数据区 — 深蓝背景 + 超大数字
   ============================================================ */
.stats-section {
  background: var(--blue-deep);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.stat-item {
  text-align: center;
  padding: 48px 16px;
}

.stat-item__number {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--accent-yellow);
  line-height: 1;
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}

.stat-item__suffix {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-yellow);
}

.stat-item__label {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}

.stat-item__divider {
  display: block;
  width: 40px;
  height: 2px;
  background: rgba(255,255,255,0.15);
  margin: 12px auto;
}

/* ============================================================
   产品分类网格
   ============================================================ */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.category-card {
  position: relative;
  background: var(--blue-deep);
  border: 1px solid rgba(255,255,255,0.06);
  padding: 36px 24px;
  text-align: center;
  color: #fff;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.category-card:hover {
  background: var(--blue-dark);
  border-color: var(--accent-yellow);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.category-card__icon {
  font-size: 2.2rem;
  color: var(--accent-yellow);
  margin-bottom: 16px;
}

.category-card__name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.category-card__tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-yellow);
  background: var(--accent-yellow-dim);
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

/* ============================================================
   流水线网格
   ============================================================ */
.prod-line-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.prod-line-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
  transition: all var(--duration-normal);
}
.prod-line-item:hover {
  border-color: var(--accent-yellow);
  background: rgba(255,255,255,0.06);
  transform: translateY(-2px);
}
.prod-line-item__image {
  aspect-ratio: 16/10;
  overflow: hidden;
}
.prod-line-item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow);
}
.prod-line-item:hover .prod-line-item__image img {
  transform: scale(1.04);
}
.prod-line-item__info {
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.prod-line-item__step {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-yellow);
  opacity: 0.6;
  line-height: 1;
  flex-shrink: 0;
}
.prod-line-item__name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 2px;
}
.prod-line-item__data {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.4;
}

/* ============================================================
   流水线时间轴 (production.html)
   ============================================================ */
.production-timeline {
  position: relative;
  padding: 20px 0;
}

.production-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg,
    var(--accent-yellow),
    var(--accent-orange),
    var(--accent-yellow));
  transform: translateX(-50%);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 60px;
}

.timeline-item:nth-child(even) {
  direction: rtl;
}

.timeline-item:nth-child(even) .timeline-item__content {
  direction: ltr;
}

.timeline-item__content {
  direction: ltr;
}

.timeline-item__step {
  font-family: var(--font-heading);
  font-size: 6rem;
  font-weight: 800;
  color: rgba(245,166,35,0.08);
  line-height: 1;
  margin-bottom: -20px;
}

.timeline-item__image {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  border: 2px solid var(--border-light);
}

.timeline-item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.timeline-item__dot {
  position: relative;
  width: 16px;
  height: 16px;
  background: var(--accent-yellow);
  border: 3px solid var(--blue-deep);
  border-radius: 50%;
  z-index: 2;
  flex-shrink: 0;
}

.timeline-item__dot::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 2px solid rgba(245,166,35,0.3);
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.4); opacity: 1; }
}

.timeline-item__name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline-item__data {
  font-size: 0.88rem;
  color: var(--accent-yellow);
  font-weight: 700;
  margin-bottom: 8px;
}

.timeline-item__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   产品卡片
   ============================================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.product-card:hover {
  border-color: var(--accent-yellow);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

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

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

.product-card:hover .product-card__image img {
  transform: scale(1.04);
}

.product-card__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  background: var(--accent-yellow);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.product-card__body {
  padding: 20px;
}

.product-card__name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.product-card__params {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.product-card__param {
  padding: 3px 8px;
  background: var(--gray-bg);
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.product-card__link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-yellow);
}

.product-card__link i {
  margin-left: 4px;
  font-size: 0.75rem;
  transition: transform var(--duration-fast);
}

.product-card__link:hover i {
  transform: translateX(4px);
}

/* ============================================================
   案例卡片
   ============================================================ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.case-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1/1;
  background: var(--gray-bg);
}

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

.case-card:hover .case-card__image {
  transform: scale(1.06);
}

.case-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 40%, rgba(26,46,62,0.85));
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  transition: background var(--duration-normal);
}

.case-card__brand {
  font-size: 0.75rem;
  color: var(--accent-yellow);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.case-card__scale {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

/* ============================================================
   打样定制流程 — 四步
   ============================================================ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.process-step {
  text-align: center;
  padding: 40px 20px;
  position: relative;
  background: var(--blue-deep);
  border-right: 1px solid rgba(255,255,255,0.08);
}

.process-step:last-child {
  border-right: none;
}

.process-step__num {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-yellow);
  line-height: 1;
  margin-bottom: 12px;
}

.process-step__arrow {
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  background: var(--accent-yellow);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  z-index: 2;
}

.process-step:last-child .process-step__arrow {
  display: none;
}

.process-step__icon {
  font-size: 2rem;
  color: rgba(255,255,255,0.25);
  margin-bottom: 12px;
}

.process-step__name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.process-step__desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}

/* ============================================================
   资质认证墙
   ============================================================ */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.cert-item {
  text-align: center;
  padding: 32px 16px;
  background: var(--blue-dark);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--duration-normal);
}

.cert-item:hover {
  border-color: var(--accent-yellow);
  background: rgba(245,166,35,0.06);
}

.cert-item__icon {
  font-size: 2.5rem;
  color: var(--accent-yellow);
  margin-bottom: 12px;
}

.cert-item__name {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.cert-item__sub {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.5);
}

/* ============================================================
   CTA 区
   ============================================================ */
.cta-section {
  background: var(--blue-deep);
  text-align: center;
  padding: 80px 0;
  border-top: 3px solid var(--accent-yellow);
}

.cta-section__title {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  color: #fff;
  margin-bottom: 0.75rem;
}

.cta-section__subtitle {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 32px;
}

.cta-tags {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.cta-tag {
  padding: 8px 20px;
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.7);
  font-size: 0.88rem;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.12);
}

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 300px;
  overflow: hidden;
  background: var(--blue-deep);
  border-bottom: 3px solid var(--accent-yellow);
}

.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(26,46,62,0.55) 0%,
    rgba(26,46,62,0.7) 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: var(--header-h);
}

.inner-banner__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.25rem;
}

.inner-banner__subtitle {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
}

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

.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);
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

.breadcrumb i {
  font-size: 0.6rem;
  color: var(--text-muted);
}

/* ============================================================
   产品列表页 — 左侧边栏 + 右侧网格
   ============================================================ */
.product-page {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 36px;
}

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

.sidebar-card {
  background: #fff;
  border: 1px solid var(--border-light);
  margin-bottom: 20px;
}

.sidebar-card__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  background: var(--gray-bg);
}

.sidebar-nav a {
  display: block;
  padding: 12px 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--gray-bg);
  transition: all var(--duration-fast);
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  color: var(--accent-yellow);
  background: var(--accent-yellow-dim);
  font-weight: 600;
}

.sidebar-filter {
  padding: 16px 20px;
}

.sidebar-filter__label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.sidebar-filter a {
  display: inline-block;
  padding: 4px 10px;
  margin: 0 4px 6px 0;
  font-size: 0.8rem;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  transition: all var(--duration-fast);
}

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

/* 子栏目过滤栏 */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 24px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

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

.filter-bar a {
  display: inline-flex;
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  white-space: nowrap;
  transition: all var(--duration-fast);
  flex-shrink: 0;
}

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

/* ============================================================
   新闻列表
   ============================================================ */
.news-list-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
}

.news-list-item__image {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--gray-bg);
}

.news-list-item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow);
}

.news-list-item:hover .news-list-item__image img {
  transform: scale(1.04);
}

.news-list-item__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.news-list-item__date {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.news-list-item__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   产品详情页
   ============================================================ */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.product-detail__gallery {
  border: 1px solid var(--border-light);
  overflow: hidden;
  background: var(--gray-bg);
}

.product-detail__gallery .swiper-slide {
  aspect-ratio: 4/3;
}

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

.product-detail__gallery-thumbs {
  margin-top: 10px;
}

.product-detail__gallery-thumbs .swiper-slide {
  width: 80px;
  height: 60px;
  opacity: 0.5;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--duration-fast);
}

.product-detail__gallery-thumbs .swiper-slide-thumb-active {
  opacity: 1;
  border-color: var(--accent-yellow);
}

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

.product-detail__info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.product-detail__name {
  font-size: 1.75rem;
  font-weight: 700;
}

.product-detail__subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* 参数表格 */
.param-table {
  width: 100%;
  border-collapse: collapse;
}

.param-table tr {
  border-bottom: 1px solid var(--border-light);
}

.param-table td {
  padding: 12px 0;
  font-size: 0.9rem;
}

.param-table td:first-child {
  font-weight: 600;
  color: var(--text-muted);
  width: 120px;
  white-space: nowrap;
}

.param-table td:last-child {
  color: var(--text-primary);
  font-weight: 500;
}

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

.case-detail__hero {
  margin-bottom: 36px;
  border: 1px solid var(--border-light);
}

.case-detail__hero img {
  width: 100%;
}

.case-detail__info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.case-detail__stat {
  text-align: center;
  padding: 24px;
  background: var(--gray-bg);
  border: 1px solid var(--border-light);
}

.case-detail__stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-yellow);
}

.case-detail__stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ============================================================
   询价表单页
   ============================================================ */
.inquiry-form {
  max-width: 700px;
  margin: 0 auto;
  padding: 48px;
  background: #fff;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.inquiry-form__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.inquiry-form__desc {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

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

.form-control {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--border-light);
  background: #fff;
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color var(--duration-fast);
}

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

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

select.form-control {
  appearance: none;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238B9199' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E") no-repeat right 14px center;
  padding-right: 36px;
}

/* ============================================================
   搜索页
   ============================================================ */
.search-section {
  padding-top: calc(var(--header-h) + 40px);
}

.search-box {
  max-width: 600px;
  margin: 0 auto 40px;
}

.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 {
  padding-left: 42px;
}

.search-result-item {
  display: flex;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--border-light);
  margin-bottom: 10px;
  transition: all var(--duration-fast);
}

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

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

.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-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.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;
}

/* ============================================================
   联系信息
   ============================================================ */
.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: #fff;
  border: 1px solid var(--border-light);
  margin-bottom: 12px;
  transition: all var(--duration-fast);
}

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

.contact-info__icon {
  width: 44px;
  height: 44px;
  background: var(--accent-yellow-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-yellow);
  flex-shrink: 0;
  font-size: 1rem;
}

.contact-info__label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.contact-info__value {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* 表单卡片 */
.contact-form-card {
  padding: 36px;
  background: #fff;
  border: 1px solid var(--border-light);
}

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

.detail__header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
}

.detail__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 10px;
}

.detail__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.detail__meta-row i { margin-right: 4px; }

.detail__body {
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: 0.95rem;
}

.detail__body img {
  margin: 20px 0;
  max-width: 100%;
  border: 1px solid var(--border-light);
}

.detail__body p { margin-bottom: 16px; }
.detail__body h2, .detail__body h3, .detail__body h4 {
  color: var(--text-primary);
  margin-top: 32px;
  margin-bottom: 14px;
}

.detail__pager {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 20px;
  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(--accent-yellow); }

/* 相关推荐 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.related-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 20px;
}

/* ============================================================
   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;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  transition: all var(--duration-fast);
}

.pagination a:hover {
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
}

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

.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: 3rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: block;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ============================================================
   Footer 底部 — 深色四列
   ============================================================ */
.footer {
  background: linear-gradient(180deg, #1a2e3e 0%, #152535 100%);
  border-top: 3px solid var(--accent-yellow);
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: -3px; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-yellow), var(--accent-orange));
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 56px 0 36px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.footer__brand-desc {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin: 14px 0;
}

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

.footer__social a {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  font-size: 0.95rem;
  transition: all var(--duration-fast);
}

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

.footer__col-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer__col-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--accent-yellow);
}

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

.footer__links a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--duration-fast);
}

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

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 10px;
}

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

.footer__qrcode {
  width: 110px;
  height: 110px;
  background: #fff;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  color: #999;
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  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: 0.8rem;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 8px;
}

.footer__bottom a {
  color: rgba(255,255,255,0.4);
}

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

/* 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: rgba(255,255,255,0.4);
  flex-shrink: 0;
}

.friend-links a {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  transition: color var(--duration-fast);
}

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

/* 返回顶部 */
.back-top {
  position: fixed;
  right: 20px;
  bottom: 80px;
  width: 44px;
  height: 44px;
  background: var(--blue-deep);
  border: 2px solid var(--accent-yellow);
  color: var(--accent-yellow);
  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);
}

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

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

/* ============================================================
   工业风动画系统
   ============================================================ */

/* --- 数据高亮脉冲（产能数字） --- */
@keyframes dataPulse {
  0%, 100% { text-shadow: 0 0 0 rgba(245,166,35,0); }
  50% { text-shadow: 0 0 12px rgba(245,166,35,0.3); }
}

.stat-item__number {
  animation: dataPulse 3s ease-in-out infinite;
}

/* --- 边框扫描（卡片hover） --- */
@keyframes borderScan {
  0% { background-position: 0% 0%; }
  100% { background-position: 200% 0%; }
}

.category-card:hover,
.product-card:hover {
  position: relative;
}
.category-card::after,
.product-card::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid transparent;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--duration-normal);
}
.category-card:hover::after,
.product-card:hover::after {
  opacity: 1;
  border-color: var(--accent-yellow);
  animation: borderScan 2s linear infinite;
}

/* --- CTA区域微光 --- */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 4px 16px rgba(245,166,35,0.25); }
  50% { box-shadow: 0 4px 32px rgba(245,166,35,0.5); }
}

.cta-section {
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(245,166,35,0.06) 0%, transparent 70%);
  pointer-events: none;
  animation: glowPulse 4s ease-in-out infinite;
}

/* --- 认证项hover --- */
.cert-item {
  position: relative;
}
.cert-item::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20%;
  width: 60%;
  height: 2px;
  background: var(--accent-yellow);
  transform: scaleX(0);
  transition: transform var(--duration-normal);
}
.cert-item:hover::before {
  transform: scaleX(1);
}

/* --- 流程步骤数字 --- */
.process-step__num {
  transition: transform var(--duration-normal);
}
.process-step:hover .process-step__num {
  transform: scale(1.15);
}

/* --- Hero文字入场 --- */
.hero__title {
  animation: heroReveal 1s var(--ease-out) both;
}
.hero__subtitle {
  animation: heroReveal 1s var(--ease-out) 0.2s both;
}
.hero__actions {
  animation: heroReveal 0.8s var(--ease-out) 0.4s both;
}
@keyframes heroReveal {
  0% { opacity: 0; transform: translateY(24px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* --- 联系信息项hover --- */
.contact-info__item {
  transition: all var(--duration-normal);
}
.contact-info__item:hover {
  transform: translateX(4px);
}

/* --- 新闻项hover --- */
.news-list-item {
  transition: all var(--duration-normal);
}
.news-list-item:hover {
  background: var(--gray-pale);
  padding-left: 12px;
}

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

/* ============================================================
   响应式 — 平板 (< 1024px)
   ============================================================ */
@media (max-width: 1023px) {
  .header__nav,
  .header__actions {
    display: none;
  }

  .hamburger {
    display: flex;
  }

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

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

  .stat-item {
    padding: 32px 16px;
  }

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

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

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

  .process-step__arrow {
    display: none;
  }

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

  .prod-line-grid { grid-template-columns: 1fr; }
  .prod-line-item__info { flex-direction: column; text-align: center; }
  .production-timeline::before {
    left: 24px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 40px;
  }

  .timeline-item__dot {
    margin-left: 16px;
  }

  .product-page {
    grid-template-columns: 1fr;
  }

  .product-sidebar {
    order: -1;
  }

  .product-detail {
    grid-template-columns: 1fr;
  }

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

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

  .news-list-item {
    grid-template-columns: 140px 1fr;
    gap: 16px;
  }

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

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

/* ============================================================
   响应式 — 手机 (< 768px)
   ============================================================ */
@media (max-width: 767px) {
  :root { --section-py: 56px; }

  .hero {
    height: 85vh;
    min-height: 500px;
    max-height: none;
  }

  .hero__content {
    padding-bottom: 60px;
  }

  .inner-banner {
    height: 220px;
  }

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

  .stat-item__number {
    font-size: 2rem;
  }

  .categories-grid { grid-template-columns: 1fr; }
  .prod-line-grid { grid-template-columns: 1fr; }
  .prod-line-item__info { flex-direction: column; text-align: center; gap: 6px; }

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

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

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

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

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

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

  .news-list-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .news-list-item__image {
    aspect-ratio: 16/9;
  }

  .case-detail__info {
    grid-template-columns: 1fr;
  }

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

  .inquiry-form {
    padding: 28px 20px;
  }

  .search-result-item {
    flex-direction: column;
  }

  .search-result-item__thumb {
    width: 100%;
    height: 160px;
  }

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

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