/**
 * 绿能储能 — 智慧能源系统 企业站样式
 * 深灰基底 + 能量绿(#00D4AA/#00B894) + 毛玻璃卡片
 * 能量流动视觉语言，呼吸光效，大圆角流动感
 * 纯原生 CSS，无框架依赖
 */


/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* 基底色 — 深灰到近黑 */
  --bg-deep: #0D1117;
  --bg-dark: #131820;
  --bg-mid: #1A1F2B;
  --bg-card: rgba(26, 31, 43, 0.55);
  --bg-card-hover: rgba(26, 31, 43, 0.80);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.06);
  --bg-input: rgba(255, 255, 255, 0.05);

  /* 能量绿 — 核心点缀色 */
  --green: #00D4AA;
  --green-bright: #00F5C0;
  --green-dim: rgba(0, 212, 170, 0.15);
  --green-glow: rgba(0, 212, 170, 0.25);
  --green-glow-strong: rgba(0, 212, 170, 0.45);
  --green-dark: #00B894;

  /* 能量流辅助色 */
  --green-cyan: #00E5CC;
  --green-mint: #55EFC4;

  /* 文字色阶 */
  --text-primary: #E8ECF4;
  --text-secondary: #8892A4;
  --text-muted: #4A5468;
  --text-white: #FFFFFF;

  /* 边框 */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-mid: rgba(255, 255, 255, 0.10);
  --border-green: rgba(0, 212, 170, 0.25);
  --border-green-strong: rgba(0, 212, 170, 0.50);

  /* 阴影 */
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.40);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.55);
  --shadow-green: 0 0 30px rgba(0, 212, 170, 0.12);
  --shadow-green-strong: 0 0 50px rgba(0, 212, 170, 0.20);
  --shadow-green-btn: 0 0 25px rgba(0, 212, 170, 0.35);

  /* 圆角 — 流动感大水润 */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* 间距 */
  --section-py: 100px;
  --section-py-sm: 60px;
  --container-max: 1200px;
  --header-h: 72px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-xl: 800ms;

  /* 字体 — Noto Sans SC(中文) + Inter(英文/数字) + JetBrains Mono(数据) */
  --font-heading: 'Noto Sans SC', 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', 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%;
  font-size: 16px;
}

body {
  background: var(--bg-deep);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 212, 170, 0.03) 0%, transparent 60%),
    radial-gradient(ellipse 40% 50% at 20% 80%, rgba(0, 180, 148, 0.03) 0%, transparent 50%),
    var(--bg-deep);
}

/* 绿色流动装饰线（全局） */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  z-index: -1;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(0, 212, 170, 0.15) 20%,
    rgba(0, 212, 170, 0.3) 50%,
    rgba(0, 212, 170, 0.15) 80%,
    transparent 100%
  );
  opacity: 0.6;
}

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

a:hover { color: var(--green); }

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

ul, ol { list-style: none; }

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
  border: none;
}

::selection {
  background: rgba(0, 212, 170, 0.3);
  color: var(--text-white);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,212,170,0.3); }

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

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

.section--dark { background: var(--bg-deep); }
.section--mid  { background: var(--bg-dark); }
.section--light { background: var(--bg-mid); }

/* 绿色装饰带（在区块顶部做能量流动分割） */
.section-ribbon {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--green-dim) 30%,
    var(--green) 50%,
    var(--green-dim) 70%,
    transparent 100%
  );
}

/* ============================================================
   区块标题系统
   ============================================================ */
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 12px;
  padding: 4px 14px;
  border: 1px solid var(--border-green);
  border-radius: var(--radius-full);
  background: var(--green-dim);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

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

/* 带绿色下划线的标题 */
.section-title--underline {
  position: relative;
  padding-bottom: 16px;
}
.section-title--underline::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--green);
  border-radius: 2px;
  box-shadow: var(--shadow-green);
}
.text-center .section-title--underline::after { left: 50%; transform: translateX(-50%); }

/* ============================================================
   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-full);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
  letter-spacing: 0.02em;
  position: relative;
}

.btn--primary {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  color: #0D1117;
  box-shadow: var(--shadow-green-btn);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(0, 212, 170, 0.5);
  color: #0D1117;
}

/* 绿色脉冲按钮 */
.btn--pulse {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  color: #0D1117;
  box-shadow: var(--shadow-green-btn);
  animation: btnPulse 2.5s ease-in-out infinite;
}
.btn--pulse:hover {
  animation: none;
  transform: translateY(-2px);
  box-shadow: 0 0 50px rgba(0, 212, 170, 0.6);
  color: #0D1117;
}

@keyframes btnPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(0, 212, 170, 0.3); }
  50%      { box-shadow: 0 0 45px rgba(0, 212, 170, 0.55); }
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--border-green-strong);
  color: var(--green);
}
.btn--outline:hover {
  background: var(--green-dim);
  border-color: var(--green);
  color: var(--green-bright);
  transform: translateY(-2px);
}

.btn--ghost {
  background: var(--bg-glass);
  color: var(--text-secondary);
}
.btn--ghost:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

.btn--white {
  background: rgba(255,255,255,0.95);
  color: #0D1117;
}
.btn--white:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}

.btn--lg { padding: 16px 36px; font-size: 1rem; }
.btn--sm { padding: 8px 18px; font-size: 0.82rem; }

.btn i { font-size: 0.85em; }

/* ============================================================
   Header — 透明磨砂固定
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(13, 17, 23, 0.80);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background: rgba(13, 17, 23, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  border-bottom-color: var(--border-green);
}

.header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

/* Logo 区域 */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}
.header__logo:hover { color: inherit; }

.header__logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: var(--shadow-green-btn);
  animation: logoGlow 3s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes logoGlow {
  0%, 100% { box-shadow: 0 0 8px rgba(0, 212, 170, 0.5); }
  50%      { box-shadow: 0 0 20px rgba(0, 212, 170, 0.9), 0 0 40px rgba(0, 212, 170, 0.3); }
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.03em;
}
.header__logo-sub {
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
}

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

.header__nav-link {
  padding: 8px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.header__nav-link:hover,
.header__nav-link.active {
  color: var(--green);
  background: var(--green-dim);
}

/* 下拉菜单 */
.header__nav-item {
  position: relative;
}

.header__dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  min-width: 160px;
  background: rgba(19, 24, 32, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-md);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  z-index: 60;
  box-shadow: var(--shadow-card-hover);
}

.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.header__dropdown a {
  display: block;
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}
.header__dropdown a:hover {
  background: var(--green-dim);
  color: var(--green);
}

/* 右侧操作区 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-size: 0.84rem;
  font-weight: 600;
  color: #0D1117;
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out);
  animation: btnPulse 2.5s ease-in-out infinite;
}
.header__cta:hover {
  color: #0D1117;
  transform: translateY(-1px);
  box-shadow: var(--shadow-green-strong);
}

/* 汉堡菜单 (独立，13.4) */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  padding: 2px;
  z-index: 1001;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: all var(--duration-normal) var(--ease-out);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端侧滑菜单 */
.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 300px;
  max-width: 80vw;
  z-index: 1002;
  background: rgba(19, 24, 32, 0.98);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-left: 1px solid var(--border-mid);
  transform: translateX(100%);
  transition: transform var(--duration-normal) var(--ease-out);
  overflow-y: auto;
}
.mobile-nav.open { transform: translateX(0); }

.mobile-nav__inner {
  padding: 20px;
}

.mobile-nav__link {
  display: block;
  padding: 14px 16px;
  font-size: 1rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}
.mobile-nav__link:hover { background: var(--green-dim); color: var(--green); }

.mobile-nav__sub {
  padding-left: 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-normal) var(--ease-out);
}
.mobile-nav__sub.open { max-height: 400px; }
.mobile-nav__sub a {
  display: block;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
}
.mobile-nav__sub a:hover { color: var(--green); }

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  z-index: 1001;
  background: rgba(0,0,0,0.6);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}
.mobile-nav__overlay.open { opacity: 1; visibility: visible; }

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: var(--header-h);
}
.inner-banner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.inner-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,17,23,0.7) 0%, rgba(13,17,23,0.85) 100%);
}
.inner-banner__content {
  position: relative;
  z-index: 2;
  text-align: center;
}
.inner-banner__title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}
.inner-banner__subtitle {
  font-size: 0.9rem;
  color: var(--green);
  letter-spacing: 0.06em;
}

/* 面包屑 */
.breadcrumb-bar {
  background: var(--bg-mid);
  border-bottom: 1px solid var(--border-subtle);
}
.breadcrumb {
  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(--green); }
.breadcrumb i { margin: 0 6px; font-size: 0.6rem; color: var(--text-muted); }

/* ============================================================
   Hero / Banner 区（首页）
   ============================================================ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 680px;
  max-height: 900px;
  overflow: hidden;
}

.hero-swiper {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(13,17,23,0.3) 0%, rgba(13,17,23,0.55) 40%, rgba(13,17,23,0.9) 100%),
    radial-gradient(ellipse 50% 45% at 50% 60%, rgba(0,212,170,0.08) 0%, transparent 60%);
}

.hero__content {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  padding: 0 24px;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.2;
  margin-bottom: 16px;
  max-width: 800px;
  letter-spacing: 0.03em;
}

.hero__subtitle {
  font-size: clamp(0.95rem, 1.5vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

/* 绿色流动装饰线（Hero区域） */
.hero__flow-line {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  width: 200px;
  height: 1px;
  background: var(--green);
  box-shadow: var(--shadow-green-strong);
  opacity: 0.8;
  animation: flowPulse 3s ease-in-out infinite;
}

@keyframes flowPulse {
  0%, 100% { width: 120px; opacity: 0.4; }
  50%      { width: 240px; opacity: 1; }
}

/* Swiper 分页器 */
.hero-pagination {
  position: absolute;
  bottom: 60px !important;
  z-index: 3;
  display: flex;
  justify-content: center;
  gap: 8px;
}
.hero-pagination .swiper-pagination-bullet {
  width: 8px;
  height: 8px;
  background: rgba(255,255,255,0.4);
  border-radius: 50%;
  transition: all var(--duration-normal) var(--ease-out);
}
.hero-pagination .swiper-pagination-bullet-active {
  width: 24px;
  border-radius: 4px;
  background: var(--green);
  box-shadow: var(--shadow-green);
}

/* ============================================================
   能量流动示意（模块2）
   ============================================================ */
.energy-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 60px 0;
  position: relative;
  flex-wrap: wrap;
}

.energy-flow__node {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 2;
  width: 220px;
}

.energy-flow__node-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  position: relative;
  box-shadow: var(--shadow-green);
}

.energy-flow__node-icon i {
  font-size: 1.6rem;
  color: var(--green);
}

/* 能量流动线（节点之间） */
.energy-flow__line {
  width: 100px;
  height: 2px;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.energy-flow__line::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--green-dim), var(--green), var(--green-dim));
}

.energy-flow__line::after {
  content: '';
  position: absolute;
  top: -2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green-bright);
  box-shadow: var(--shadow-green-btn);
  animation: flowDot 2s ease-in-out infinite;
}

@keyframes flowDot {
  0%   { left: 0%; opacity: 1; }
  100% { left: calc(100% - 6px); opacity: 0.3; }
}

.energy-flow__node-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.energy-flow__node-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   毛玻璃卡片系统
   ============================================================ */
.card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-card);
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-green);
  box-shadow: var(--shadow-card-hover), var(--shadow-green);
  transform: translateY(-4px);
}

/* 绿色边框加持卡片 */
.card--green-border {
  border-color: var(--border-green);
  box-shadow: var(--shadow-card), var(--shadow-green);
}
.card--green-border:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-card-hover), var(--shadow-green-strong);
}

.card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--bg-mid);
}
.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}
.card:hover .card__image img { transform: scale(1.05); }

.card__body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.card__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.35;
  /* 2行截断 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  flex: 1;
  /* 2行截断 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

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

/* 能量进度条（卡片底部） */
.card__energy-bar {
  margin-top: 12px;
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}
.card__energy-bar-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--green-dark), var(--green-bright));
  box-shadow: 0 0 12px rgba(0, 212, 170, 0.4);
  transition: width 1.5s var(--ease-out);
}

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

/* ============================================================
   能量数据看板（绿色数字滚动）
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  text-align: center;
  padding: 40px 20px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
}
.stat-card:hover {
  border-color: var(--border-green);
  box-shadow: var(--shadow-green);
}

.stat-card__number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: var(--green);
  margin-bottom: 8px;
  line-height: 1;
  /* 绿色光晕 */
  text-shadow: 0 0 40px rgba(0, 212, 170, 0.3);
}

.stat-card__number .unit {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-left: 2px;
}

.stat-card__label {
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ============================================================
   智造产线 — 工艺流程条
   ============================================================ */
.process-steps {
  display: flex;
  gap: 0;
  position: relative;
}

.process-step {
  flex: 1;
  text-align: center;
  padding: 32px 16px;
  position: relative;
  background: var(--bg-glass);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-lg);
  margin: 0 8px;
  transition: all var(--duration-normal) var(--ease-out);
}
.process-step:hover {
  background: var(--bg-glass-hover);
  box-shadow: var(--shadow-green);
  transform: translateY(-4px);
}
.process-step:first-child { margin-left: 0; }
.process-step:last-child { margin-right: 0; }

.process-step__num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--green);
  margin-bottom: 8px;
  opacity: 0.4;
}
.process-step:hover .process-step__num { opacity: 1; }

.process-step__title {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.process-step__desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 工序连接线（绿色边框） */
.process-steps::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(90deg, var(--green), var(--green-dim), var(--green));
  z-index: 0;
}

/* ============================================================
   CTA 区
   ============================================================ */
.cta-section {
  padding: 80px 0;
  text-align: center;
  position: relative;
  background: var(--bg-dark);
  border-top: 1px solid var(--border-green);
  border-bottom: 1px solid var(--border-green);
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(0,212,170,0.04) 0%, transparent 60%);
}

.cta-section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

/* ============================================================
   新闻模块 — 左大右小布局
   ============================================================ */
.news-featured {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
}

.news-featured__main {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.news-featured__main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}
.news-featured__main:hover img { transform: scale(1.05); }

.news-featured__main-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px 24px;
  background: linear-gradient(transparent, rgba(13,17,23,0.95));
}
.news-featured__main-overlay h3 {
  font-size: 1.25rem;
  color: var(--text-white);
  margin-bottom: 8px;
}

.news-featured__side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.news-featured__side-item {
  display: flex;
  gap: 14px;
  padding: 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}
.news-featured__side-item:hover {
  border-color: var(--border-green);
  background: var(--bg-glass-hover);
}
.news-featured__side-item time {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.news-featured__side-item h4 {
  font-size: 0.92rem;
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.4;
}

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

.product-detail__gallery {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-mid);
}

.product-detail__gallery .swiper-slide {
  aspect-ratio: 4 / 3;
}
.product-detail__gallery .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail__info h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.product-detail__specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 24px 0;
}

.product-detail__spec {
  padding: 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}
.product-detail__spec:hover {
  border-color: var(--border-green);
  box-shadow: var(--shadow-green);
}
.product-detail__spec-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.product-detail__spec-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--green);
}

/* 产品详情 Tabs */
.product-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border-subtle);
  margin-bottom: 24px;
}
.product-tabs__btn {
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--duration-fast) var(--ease-out);
}
.product-tabs__btn.active,
.product-tabs__btn:hover {
  color: var(--green);
  border-bottom-color: var(--green);
}

.product-tab-panel { display: none; }
.product-tab-panel.active { display: block; }

/* ============================================================
   技术参数表
   ============================================================ */
.specs-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.specs-table th,
.specs-table td {
  padding: 14px 20px;
  text-align: left;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border-subtle);
}
.specs-table th {
  background: var(--bg-glass);
  color: var(--green);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.specs-table td {
  color: var(--text-secondary);
}
.specs-table tr:last-child td { border-bottom: none; }
.specs-table tr:hover td { background: var(--bg-glass); }

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

.contact-info__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  margin-bottom: 12px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}
.contact-info__item:hover {
  border-color: var(--border-green);
}

.contact-info__icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--green-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-info__icon i {
  font-size: 1rem;
  color: var(--green);
}

.contact-info__label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.contact-info__value {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 600;
}

.contact-form-card {
  padding: 32px;
  background: var(--bg-glass);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* ============================================================
   表单
   ============================================================ */
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-group .required { color: var(--green); }

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}
.form-control:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-dim);
  background: rgba(255,255,255,0.07);
}
.form-control::placeholder { color: var(--text-muted); }

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

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

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

.search-input-wrap {
  flex: 1;
  position: relative;
}
.search-input-wrap i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}
.search-input-wrap input {
  width: 100%;
  padding: 12px 16px 12px 42px;
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out);
}
.search-input-wrap input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-dim);
}

.search-result-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  margin-bottom: 12px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}
.search-result-item:hover {
  border-color: var(--border-green);
}
.search-result-item__thumb {
  width: 120px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-mid);
}
.search-result-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.search-result-item__info { flex: 1; }
.search-result-item__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.search-result-item__date {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.search-result-item__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ============================================================
   分页
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.pagination a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}
.pagination a:hover,
.pagination a.active {
  color: var(--green);
  border-color: var(--green);
  background: var(--green-dim);
}
.pagination a.active {
  font-weight: 700;
  border-color: var(--green);
  box-shadow: var(--shadow-green);
}

/* ============================================================
   友情链接
   ============================================================ */
.friend-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.friend-links__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-shrink: 0;
}
.friend-links a {
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}
.friend-links a:hover { color: var(--green); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-green);
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
}

.footer__grid {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 60px 24px 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1fr;
  gap: 40px;
}

.footer__brand-desc {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 16px 0;
}

.footer__social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  transition: all var(--duration-fast) var(--ease-out);
  margin-right: 8px;
}
.footer__social:hover {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-dim);
  box-shadow: var(--shadow-green);
}

.footer__col-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.footer__links a {
  display: block;
  font-size: 0.84rem;
  color: var(--text-muted);
  padding: 6px 0;
  transition: all var(--duration-fast) var(--ease-out);
}
.footer__links a:hover { color: var(--green); padding-left: 6px; }

.footer__contact-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 12px;
  font-size: 0.84rem;
  color: var(--text-muted);
}
.footer__contact-item i {
  color: var(--green);
  margin-top: 4px;
  flex-shrink: 0;
}

.footer__qrcode {
  width: 80px;
  height: 80px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.7rem;
  text-align: center;
  line-height: 1.4;
}

.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 16px 0;
}
.footer__bottom-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer__bottom-inner a { color: var(--text-muted); }
.footer__bottom-inner a:hover { color: var(--green); }

/* ============================================================
   返回顶部
   ============================================================ */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 900;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-mid);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}
.back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover {
  border-color: var(--green);
  color: var(--green);
  box-shadow: var(--shadow-green);
}

/* ============================================================
   详情页正文
   ============================================================ */
.detail__body {
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: 0.95rem;
}
.detail__body h2,
.detail__body h3 {
  color: var(--text-primary);
  margin: 24px 0 12px;
}
.detail__body p { margin-bottom: 14px; }
.detail__body img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin: 20px 0;
}
.detail__body table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}
.detail__body table td,
.detail__body table th {
  padding: 10px 16px;
  border: 1px solid var(--border-subtle);
  font-size: 0.88rem;
}
.detail__body table th {
  background: var(--bg-glass);
  color: var(--green);
  font-weight: 600;
}

/* 上一篇/下一篇 */
.prev-next {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--border-subtle);
  margin-top: 32px;
  font-size: 0.88rem;
}
.prev-next a { color: var(--text-secondary); }
.prev-next a:hover { color: var(--green); }

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state i {
  font-size: 3rem;
  display: block;
  margin-bottom: 16px;
  opacity: 0.3;
}

/* ============================================================
   OEM 模块（绿色面板）
   ============================================================ */
.oem-banner {
  background: linear-gradient(135deg, rgba(0,212,170,0.08), rgba(0,184,148,0.03));
  border: 1px solid var(--border-green);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.oem-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 30% 50%, rgba(0,212,170,0.05) 0%, transparent 60%);
}
.oem-banner h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  color: var(--text-white);
  margin-bottom: 12px;
  position: relative;
}
.oem-banner p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  position: relative;
  font-size: 1rem;
}

/* ============================================================
   留言/询价
   ============================================================ */
.inquiry-form {
  max-width: 680px;
  margin: 0 auto;
  padding: 40px;
  background: var(--bg-glass);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* ============================================================
   动画工具
   ============================================================ */
.text-center { text-align: center; }
.text-right  { text-align: right; }

/* 呼吸光效 */
.glow-breath {
  animation: glowBreath 3s ease-in-out infinite;
}
@keyframes glowBreath {
  0%, 100% { box-shadow: 0 0 8px rgba(0,212,170,0.15); }
  50%      { box-shadow: 0 0 24px rgba(0,212,170,0.35); }
}

/* 能量脉冲点 */
.energy-pulse {
  position: relative;
}
.energy-pulse::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  border: 1px solid var(--green);
  animation: energyPulse 2s ease-out infinite;
  pointer-events: none;
}
@keyframes energyPulse {
  0%   { inset: -2px; opacity: 0.8; border-width: 1px; }
  100% { inset: -12px; opacity: 0; border-width: 0px; }
}

/* 延迟脉冲 */
.energy-pulse--delay::after { animation-delay: 0.6s; }
.energy-pulse--delay2::after { animation-delay: 1.2s; }

/* ============================================================
   响应式 — 768px 断点
   ============================================================ */
@media (max-width: 1023px) {
  .header__nav { display: none; }
  .header__cta { display: none; }
  .hamburger { display: flex; }

  .list-grid,
  .list-grid--4,
  .list-grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

  .process-steps {
    flex-wrap: wrap;
    gap: 12px;
  }
  .process-steps::before { display: none; }
  .process-step {
    flex: 1 1 calc(50% - 12px);
    min-width: 160px;
    margin: 0;
  }

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

  .energy-flow {
    flex-direction: column;
    gap: 24px;
  }
  .energy-flow__line {
    width: 2px;
    height: 40px;
  }
  .energy-flow__line::after {
    animation-name: flowDotVertical;
  }
}

@keyframes flowDotVertical {
  0%   { top: 0%; opacity: 1; }
  100% { top: calc(100% - 6px); opacity: 0.3; }
}

@media (max-width: 767px) {
  :root {
    --section-py: 60px;
    --header-h: 60px;
  }

  .list-grid,
  .list-grid--4,
  .list-grid--2 {
    grid-template-columns: 1fr;
  }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }

  .stat-card { padding: 24px 16px; }

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

  .hero__actions { flex-direction: column; align-items: center; }

  .inner-banner { height: 240px; }

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

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

  .prev-next { flex-direction: column; gap: 8px; }

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

  .search-form-row { flex-direction: column; }

  .oem-banner { padding: 32px 20px; }

  .process-step {
    flex: 1 1 100%;
  }

  .energy-flow__node { width: 100%; }

  .section-title { font-size: 1.5rem; }
}

/* ============================================================
   懒加载图片
   ============================================================ */
img[data-src] {
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}
img[data-src].loaded {
  opacity: 1;
}

/* ============================================================
   打印样式
   ============================================================ */
@media print {
  .header, .footer, .back-top, .hero-swiper, .mobile-nav { display: none !important; }
  body { background: #fff; color: #000; }
}