/**
 * EcoSmart — 智慧环保设备厂商官网样式
 * 科技蓝 + 深蓝主调 | 玻璃态卡片 | 数据看板风格
 * 纯原生 CSS，无框架依赖
 */

/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* 主色 — 科技蓝 */
  --pri-blue: #0A4A7A;
  --pri-blue-light: #1A6BB0;
  --pri-blue-dark: #072E4D;
  --pri-blue-dim: rgba(10, 74, 122, 0.12);

  /* 深色基底 */
  --dark-deep: #061228;
  --dark-card: #0A1628;
  --dark-card-hover: #0F1F38;
  --dark-surface: rgba(255, 255, 255, 0.03);

  /* 亮青点缀 */
  --accent-cyan: #00D4FF;
  --accent-cyan-dim: rgba(0, 212, 255, 0.12);
  --accent-cyan-glow: rgba(0, 212, 255, 0.25);

  /* 辅助色 */
  --accent-green: #10B981;

  /* 渐变 */
  --gradient-blue: linear-gradient(135deg, #0A4A7A, #1A6BB0);
  --gradient-dark: linear-gradient(180deg, #061228 0%, #0A1628 50%, #0F1F38 100%);
  --gradient-cyan-line: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);

  /* 文字色阶 - 亮底 */
  --text-dark: #1a1a2e;
  --text-gray: #5a6a7e;
  --text-gray-light: #8899aa;

  /* 文字色阶 - 暗底 */
  --text-white: #E8ECF4;
  --text-white-secondary: rgba(255, 255, 255, 0.7);
  --text-white-muted: rgba(255, 255, 255, 0.45);

  /* 边框 */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(10, 74, 122, 0.1);
  --border-glow: rgba(0, 212, 255, 0.2);

  /* 阴影 */
  --shadow-card: 0 2px 20px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.14);
  --shadow-glow-cyan: 0 0 30px rgba(0, 212, 255, 0.15);
  --shadow-glow-blue: 0 0 24px rgba(10, 74, 122, 0.2);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* 间距 */
  --section-py: 88px;
  --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);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* 字体 — Inter(标题) + Noto Sans SC(正文) + JetBrains Mono(等宽) */
  --font-heading: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira 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%;
}

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dark);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  background: #fff;
}

::selection {
  background: rgba(0, 212, 255, 0.2);
  color: var(--pri-blue-dark);
}

a { color: inherit; text-decoration: none; transition: color var(--duration-fast) var(--ease-out); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
input, textarea, select, button { font-family: inherit; font-size: inherit; }
input::placeholder, textarea::placeholder { color: var(--text-gray-light); opacity: 1; }

/* 滚动条 */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: rgba(10, 74, 122, 0.25); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(10, 74, 122, 0.4); }

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

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--pri-blue-light);
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 28px;
}

.section-tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 20px;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: 1px;
  transform: translateY(-50%);
}

/* 暗底 section-tag */
.section-dark .section-tag { color: var(--accent-cyan); }

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
  letter-spacing: 0.03em;
}

.section-dark .section-title,
.section-dark h2 { color: var(--text-white); }

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

.section-dark .section-subtitle { color: var(--text-white-secondary); }

/* ============================================================
   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(--gradient-dark);
  color: var(--text-white);
  position: relative;
}

/* 暗底区块顶部科技线条 */
.section-dark::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  max-width: 800px;
  height: 1px;
  background: var(--gradient-cyan-line);
  opacity: 0.4;
}

.section-light-gray {
  background: #f7f9fc;
}

/* ============================================================
   Header — 毛玻璃导航
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(10, 74, 122, 0.08);
  transition: background var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
}

.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: 38px;
  height: 38px;
  background: var(--gradient-blue);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
}

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

.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--pri-blue-dark);
  letter-spacing: -0.01em;
}

.header__logo-sub {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--pri-blue-light);
}

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

.header__nav-link {
  padding: 8px 16px;
  font-size: 0.88rem;
  color: var(--text-gray);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  font-weight: 500;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--pri-blue-light);
  background: rgba(10, 74, 122, 0.06);
}

/* 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: 170px;
  padding: 8px 0;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(10, 74, 122, 0.08);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--duration-normal) var(--ease-out);
  z-index: 60;
}

/* 下拉箭头：子栏目有内容时才显示 */
.header__nav-arrow {
  display: none;
  font-size: 0.6rem;
  margin-left: 4px;
  color: inherit;
}

.header__nav-item:has(.header__dropdown a:nth-child(2)) .header__nav-arrow {
  display: inline;
}

/* 无子栏目时隐藏空下拉 */
.header__dropdown:not(:has(a:nth-child(2))) {
  display: none;
}

.header__dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 0.85rem;
  color: var(--text-gray);
  transition: all var(--duration-fast) var(--ease-out);
}

.header__dropdown a:hover {
  color: var(--pri-blue-light);
  background: rgba(10, 74, 122, 0.04);
}

/* 右侧操作区 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 16px;
}

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

.header__cta:hover {
  color: var(--pri-blue-dark);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-1px);
}

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

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

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

/* 移动端侧滑菜单 */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 80%;
  max-width: 360px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  z-index: 120;
  transform: translateX(-100%);
  transition: transform var(--duration-normal) var(--ease-out);
  overflow-y: auto;
}

.mobile-nav.open { transform: translateX(0); }

.mobile-nav__inner { padding: 24px; padding-top: 80px; }

.mobile-nav__link {
  display: block;
  padding: 14px 16px;
  font-size: 1rem;
  color: var(--text-gray);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  font-weight: 500;
}

.mobile-nav__link:hover { color: var(--pri-blue-light); background: rgba(10, 74, 122, 0.04); }

.mobile-nav__sub { padding-left: 16px; display: none; }
.mobile-nav__sub.open { display: block; }

.mobile-nav__sub a {
  display: block;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--text-gray-light);
  border-radius: var(--radius-sm);
}

.mobile-nav__sub a:hover { color: var(--pri-blue-light); }

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 115;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) 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: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

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

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

.btn--cyan {
  background: var(--accent-cyan);
  color: var(--pri-blue-dark);
}

.btn--cyan:hover {
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-2px);
  color: var(--pri-blue-dark);
}

.btn--outline {
  background: transparent;
  color: var(--pri-blue-light);
  border: 1px solid var(--pri-blue-light);
}

.btn--outline:hover {
  background: var(--pri-blue-dim);
  color: var(--pri-blue-dark);
  transform: translateY(-2px);
}

.btn--outline-white {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn--outline-white:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  transform: translateY(-2px);
}

.btn--ghost {
  background: var(--dark-surface);
  color: var(--text-white-secondary);
  border: 1px solid var(--border-subtle);
}

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

/* 脉冲动画按钮 */
.btn--primary.pulse {
  animation: btnPulse 2s infinite;
}

@keyframes btnPulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.4); }
  70% { box-shadow: 0 0 0 14px rgba(0, 212, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0); }
}

/* ============================================================
   卡片系统 — 玻璃态
   ============================================================ */
.card {
  background: #fff;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #f1f5f9;
}

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

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

.card__body { padding: 20px; }

.card__tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--pri-blue-light);
  background: var(--pri-blue-dim);
  border-radius: 4px;
  margin-bottom: 8px;
}

.card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__desc {
  font-size: 0.88rem;
  color: var(--text-gray);
  line-height: 1.65;
  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;
  padding-top: 12px;
  border-top: 1px solid #eef2f6;
  font-size: 0.8rem;
  color: var(--text-gray-light);
}

.card__meta i { color: var(--accent-cyan); }

/* 暗底卡片 */
.section-dark .card {
  background: var(--dark-card);
  border-color: var(--border-subtle);
}

.section-dark .card:hover {
  border-color: var(--border-glow);
  background: var(--dark-card-hover);
  box-shadow: var(--shadow-glow-cyan);
}

.section-dark .card__title { color: var(--text-white); }
.section-dark .card__desc { color: var(--text-white-secondary); }
.section-dark .card__tag { color: var(--accent-cyan); background: var(--accent-cyan-dim); }
.section-dark .card__meta { border-top-color: var(--border-subtle); color: var(--text-white-muted); }

/* 玻璃态卡片变体 */
.card--glass {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card--glass:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-cyan);
}

/* ============================================================
   Hero Banner — 首页轮播
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 820px;
  overflow: hidden;
  background: var(--dark-deep);
}

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

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

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(6, 18, 40, 0.35) 0%, rgba(6, 18, 40, 0.15) 45%, rgba(6, 18, 40, 0.85) 100%),
    linear-gradient(90deg, rgba(6, 18, 40, 0.6) 0%, rgba(6, 18, 40, 0.1) 50%, rgba(6, 18, 40, 0.3) 100%);
}

/* 科技线条装饰 */
.hero__tech-lines {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.3;
}

.hero__tech-line {
  position: absolute;
  background: var(--accent-cyan);
  opacity: 0;
  animation: techLineReveal 2s var(--ease-out) forwards;
}

.hero__tech-line:nth-child(1) {
  top: 18%;
  left: 0;
  width: 30%;
  height: 1px;
  animation-delay: 0.5s;
}

.hero__tech-line:nth-child(2) {
  top: 22%;
  right: 0;
  width: 20%;
  height: 1px;
  animation-delay: 0.8s;
}

.hero__tech-line:nth-child(3) {
  bottom: 35%;
  left: 8%;
  width: 1px;
  height: 80px;
  animation-delay: 1.1s;
}

.hero__tech-line:nth-child(4) {
  bottom: 30%;
  left: 8%;
  width: 60px;
  height: 1px;
  animation-delay: 1.4s;
}

@keyframes techLineReveal {
  0% { opacity: 0; transform: scaleX(0); }
  50% { opacity: 0.8; }
  100% { opacity: 0.25; transform: scaleX(1); }
}

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

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 1rem;
  max-width: 700px;
  animation: fadeInUp 0.8s var(--ease-out) both;
}

.hero__title span {
  color: var(--accent-cyan);
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 2rem;
  max-width: 560px;
  font-weight: 300;
  animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}

.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s var(--ease-out) 0.4s both;
}

.hero__actions .btn--outline-white { color: #fff; }

/* Swiper 数字进度分页器 */
.hero-pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 32px;
  animation: fadeInUp 0.8s var(--ease-out) 0.5s both;
}

.hero-pagination .swiper-pagination-bullet {
  width: 32px;
  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: 48px;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
}

/* 滚动指示器 */
.hero__scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  animation: scrollFloat 2s ease-in-out infinite;
}

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

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

@keyframes fadeInUp {
  0% { opacity: 0; transform: translateY(30px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   数字化数据看板
   ============================================================ */
.dashboard {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.dashboard-card {
  text-align: center;
  padding: 36px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.dashboard-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: var(--gradient-cyan-line);
  opacity: 0.5;
}

.dashboard-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-cyan);
}

.dashboard-card__number {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 700;
  color: var(--accent-cyan);
  line-height: 1;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}

.dashboard-card__unit {
  font-size: 1rem;
  color: var(--accent-cyan);
  font-weight: 400;
}

.dashboard-card__label {
  font-size: 0.88rem;
  color: var(--text-white-muted);
  font-weight: 500;
}

/* 看板装饰角标 */
.dashboard-card__corner {
  position: absolute;
  top: 8px;
  right: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan-glow);
  animation: dotBlink 2s ease-in-out infinite;
}

@keyframes dotBlink {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ============================================================
   科技特征卡片（核心技术）
   ============================================================ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.tech-card {
  text-align: center;
  padding: 40px 24px;
  background: #fff;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.tech-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20%;
  width: 60%;
  height: 2px;
  background: var(--gradient-cyan-line);
  opacity: 0;
  transition: opacity var(--duration-normal);
}

.tech-card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.tech-card:hover::after { opacity: 1; }

.tech-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: var(--radius-md);
  background: var(--pri-blue-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--pri-blue-light);
  transition: all var(--duration-normal) var(--ease-out);
}

.tech-card:hover .tech-card__icon {
  background: var(--pri-blue-light);
  color: #fff;
  transform: scale(1.1);
  box-shadow: var(--shadow-glow-blue);
}

.tech-card:nth-child(2) .tech-card__icon { background: var(--accent-cyan-dim); color: var(--accent-cyan); }
.tech-card:nth-child(2):hover .tech-card__icon { background: var(--accent-cyan); color: var(--pri-blue-dark); box-shadow: var(--shadow-glow-cyan); }

.tech-card:nth-child(3) .tech-card__icon { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); }
.tech-card:nth-child(3):hover .tech-card__icon { background: var(--accent-green); color: #fff; box-shadow: 0 0 24px rgba(16, 185, 129, 0.25); }

.tech-card:nth-child(4) .tech-card__icon { background: rgba(139, 92, 246, 0.1); color: #8B5CF6; }
.tech-card:nth-child(4):hover .tech-card__icon { background: #8B5CF6; color: #fff; box-shadow: 0 0 24px rgba(139, 92, 246, 0.25); }

.tech-card__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.tech-card__desc {
  font-size: 0.88rem;
  color: var(--text-gray);
  line-height: 1.65;
}

/* ============================================================
   案例卡片（大图+数字标签）
   ============================================================ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--dark-card);
  transition: all var(--duration-normal) var(--ease-out);
}

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

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

.case-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(6, 18, 40, 0.85) 0%, rgba(6, 18, 40, 0.2) 50%, transparent 100%);
}

.case-card__info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
}

.case-card__tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.15);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 4px;
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.case-card__title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.case-card__desc {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ============================================================
   关于我们 — 左图右文
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: #eef2f6;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 装饰框 */
.about-image::before {
  content: '';
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--radius-sm);
  pointer-events: none;
  z-index: 2;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-text p {
  color: var(--text-gray);
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 8px;
}

.about-stat {
  text-align: center;
  padding: 16px 8px;
  background: var(--pri-blue-dim);
  border-radius: var(--radius-sm);
}

.about-stat__number {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--pri-blue-light);
}

.about-stat__label {
  font-size: 0.75rem;
  color: var(--text-gray-light);
  margin-top: 2px;
}

/* ============================================================
   新闻区块 — 左大右小
   ============================================================ */
.news-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: repeat(3, auto);
  gap: 16px;
}

.news-item {
  display: flex;
  gap: 14px;
  padding: 16px;
  background: #fff;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}

.news-item:hover {
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: var(--shadow-card);
}

.news-item:first-child {
  grid-row: span 3;
  flex-direction: column;
  padding: 0;
  border: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.news-item:first-child:hover { box-shadow: var(--shadow-card-hover); }

.news-item:first-child .news-item__thumb {
  width: 100%;
  height: 220px;
}

.news-item__thumb {
  width: 100px;
  height: 72px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: #f1f5f9;
}

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

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

.news-item:first-child .news-item__body { padding: 20px; }

.news-item__title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item:first-child .news-item__title {
  font-size: 1.15rem;
  -webkit-line-clamp: 2;
}

.news-item__date {
  font-size: 0.78rem;
  color: var(--text-gray-light);
  margin-top: 4px;
  font-family: var(--font-mono);
}

.news-item__desc {
  font-size: 0.85rem;
  color: var(--text-gray);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: 6px;
}

/* 暗底新闻 */
.section-dark .news-item {
  background: var(--dark-card);
  border-color: var(--border-subtle);
}

.section-dark .news-item:hover { border-color: var(--border-glow); }
.section-dark .news-item__title { color: var(--text-white); }
.section-dark .news-item__date { color: var(--text-white-muted); }
.section-dark .news-item__desc { color: var(--text-white-secondary); }
.section-dark .news-item:first-child { border: 1px solid var(--border-subtle); }

/* ============================================================
   CTA 区块
   ============================================================ */
.cta-section {
  text-align: center;
  padding: 80px 0 100px;
  background: var(--gradient-dark);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: var(--gradient-cyan-line);
  opacity: 0.6;
}

.cta-section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
}

.cta-section p {
  color: var(--text-white-secondary);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.cta-section .btn--cyan {
  font-size: 1rem;
  padding: 15px 36px;
  box-shadow: var(--shadow-glow-cyan);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--dark-deep);
  color: var(--text-white-secondary);
  position: relative;
}

.footer__top-line {
  height: 2px;
  background: var(--gradient-cyan-line);
  opacity: 0.5;
}

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

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

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

.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white-muted);
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.footer__social a:hover {
  background: var(--accent-cyan);
  color: var(--pri-blue-dark);
}

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

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

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

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

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.83rem;
  color: var(--text-white-secondary);
  margin-bottom: 10px;
}

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

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

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

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

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

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

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

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

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

/* ============================================================
   返回顶部
   ============================================================ */
.back-top {
  position: fixed;
  right: 20px;
  bottom: 80px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--pri-blue-light);
  border: none;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  cursor: pointer;
  z-index: 80;
  opacity: 0;
  pointer-events: none;
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: 0 4px 16px rgba(10, 74, 122, 0.3);
}

.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--accent-cyan); color: var(--pri-blue-dark); transform: translateY(-2px); }

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 320px;
  overflow: hidden;
  background: var(--dark-deep);
}

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

.inner-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 18, 40, 0.6) 0%, rgba(6, 18, 40, 0.45) 50%, rgba(6, 18, 40, 0.85) 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;
}

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

.inner-banner__subtitle {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.65);
}

/* 面包屑 */
.breadcrumb-bar {
  background: #f7f9fc;
  border-bottom: 1px solid #eef2f6;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 13px 24px;
  font-size: 0.85rem;
  color: var(--text-gray-light);
}

.breadcrumb a { color: var(--text-gray); transition: color var(--duration-fast); }
.breadcrumb a:hover { color: var(--pri-blue-light); }
.breadcrumb i { font-size: 0.65rem; color: var(--text-gray-light); }

/* ============================================================
   列表页 — 网格布局
   ============================================================ */
.list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.list-header {
  text-align: center;
  margin-bottom: 40px;
}

.list-header h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin-bottom: 0.5rem;
}

/* 子栏目过滤栏 */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 32px;
  -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: 500;
  color: var(--text-gray);
  border: 1px solid var(--border-card);
  border-radius: 100px;
  white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

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

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

.detail-gallery {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 36px;
}

.detail-gallery .swiper-slide { aspect-ratio: 16/9; }
.detail-gallery .swiper-slide img { width: 100%; height: 100%; object-fit: cover; }

.detail__header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid #eef2f6;
}

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

.detail__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.85rem;
  color: var(--text-gray-light);
}

.detail__meta-row i { margin-right: 4px; color: var(--pri-blue-light); }

/* 参数表格 */
.detail__params {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.detail__param {
  padding: 16px;
  background: #f7f9fc;
  border: 1px solid #eef2f6;
  border-radius: var(--radius-sm);
  text-align: center;
}

.detail__param-label {
  font-size: 0.75rem;
  color: var(--text-gray-light);
  margin-bottom: 4px;
}

.detail__param-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--pri-blue-dark);
  font-family: var(--font-mono);
}

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

.detail__body img { border-radius: var(--radius-md); margin: 24px 0; }
.detail__body p { margin-bottom: 16px; }

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

/* 上下篇 */
.detail__pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid #eef2f6;
  font-size: 0.88rem;
  color: var(--text-gray-light);
}

.detail__pager a { color: var(--text-gray); transition: color var(--duration-fast); }
.detail__pager a:hover { color: var(--pri-blue-light); }

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

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

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

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

.contact-info__item:hover { border-color: rgba(0, 212, 255, 0.3); box-shadow: var(--shadow-card); }

.contact-info__icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--pri-blue-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pri-blue-light);
  flex-shrink: 0;
}

.contact-info__label { font-size: 0.8rem; font-weight: 600; color: var(--text-dark); margin-bottom: 2px; }
.contact-info__value { font-size: 0.88rem; color: var(--text-gray); }

/* 联系表单 */
.contact-form-card {
  padding: 36px;
  background: #fff;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-gray);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group label .required { color: #EF4444; }

.form-control {
  width: 100%;
  padding: 13px 16px;
  background: #f7f9fc;
  border: 1px solid #eef2f6;
  border-radius: var(--radius-sm);
  color: var(--text-dark);
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
}

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

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

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238899aa' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* ============================================================
   搜索页
   ============================================================ */
.search-box { max-width: 700px; margin: 0 auto; }

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

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

.search-input-wrap i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-gray-light);
  font-size: 0.95rem;
}

.search-input-wrap input {
  width: 100%;
  padding: 15px 20px 15px 44px;
  background: #fff;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  color: var(--text-dark);
  font-size: 0.95rem;
}

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

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

.search-result-item:hover {
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: var(--shadow-card);
}

.search-result-item__thumb {
  width: 100px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: #f1f5f9;
}

.search-result-item__thumb img { width: 100%; height: 100%; object-fit: cover; }
.search-result-item__info { flex: 1; min-width: 0; }

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

.search-result-item__date { font-size: 0.78rem; color: var(--text-gray-light); margin-bottom: 4px; }
.search-result-item__desc { font-size: 0.85rem; color: var(--text-gray); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

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

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

.pagination a:hover { background: var(--pri-blue-dim); color: var(--pri-blue-light); }
.pagination .active { background: var(--pri-blue-light); color: #fff; font-weight: 600; }
.pagination .disabled { color: var(--text-gray-light); pointer-events: none; }

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

.empty-state i { font-size: 3rem; color: var(--text-gray-light); margin-bottom: 16px; display: block; }
.empty-state p { color: var(--text-gray-light); font-size: 0.95rem; }

/* ============================================================
   科技线条动画
   ============================================================ */
@keyframes techLineFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

.section-dark .container {
  position: relative;
}

/* 数据流光装饰 */
.data-glow {
  position: absolute;
  pointer-events: none;
  opacity: 0.3;
}

.data-glow--top-right {
  top: -40px;
  right: -20px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--accent-cyan-dim) 0%, transparent 70%);
}

.data-glow--bottom-left {
  bottom: -40px;
  left: -20px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(10, 74, 122, 0.12) 0%, transparent 70%);
}

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

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

  .dashboard { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .news-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .list-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }

  .hero { height: 80vh; min-height: 500px; }
  .hero__tech-lines { display: none; }

  .detail__pager { flex-direction: column; gap: 8px; text-align: center; }
}

/* ============================================================
   响应式 — 移动端 (< 768px)
   ============================================================ */
@media (max-width: 767px) {
  :root { --section-py: 52px; }

  .hero { height: 85vh; min-height: 480px; }

  .hero__title { font-size: clamp(1.6rem, 8vw, 2.2rem); }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { justify-content: center; }

  .inner-banner { height: 220px; }

  .dashboard { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .dashboard-card { padding: 24px 12px; }

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

  .news-grid { grid-template-columns: 1fr; }
  .news-item:first-child { grid-row: span 1; }

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

  .card__body { padding: 16px; }

  .about-stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }

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

  .contact-form-card { padding: 24px; }
  .search-result-item { flex-direction: column; }
  .search-result-item__thumb { width: 100%; height: 160px; }

  .back-top { right: 12px; bottom: 60px; }
}

/* ============================================================
   响应式 — 小屏 (< 375px)
   ============================================================ */
@media (max-width: 374px) {
  body { font-size: 14px; }
  .dashboard { grid-template-columns: 1fr; }
  .pagination a, .pagination span { min-width: 34px; height: 34px; font-size: 0.8rem; }
}

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