/* ============================================
   暗网 - 原创样式表
   品牌：暗网 | 域名：nos36azq.cn
   配色方案：深海蓝黑 + 热血红 + 紫罗兰
   ============================================ */

/* === CSS变量定义 === */
:root {
  --primary-dark: #1A1A2E;
  --accent-red: #E94560;
  --deep-blue: #0F3460;
  --bg-night: #16213E;
  --text-light: #EAEAEA;
  --text-muted: #A0A0B8;
  --violet: #533483;
  --gradient-hot: linear-gradient(135deg, #E94560, #533483);
  --gradient-ocean: linear-gradient(135deg, #0F3460, #1A1A2E);
  --gradient-fire: linear-gradient(135deg, #E94560, #FF6B35);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover: 0 12px 40px rgba(233,69,96,0.25);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --font-main: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--primary-dark);
  color: var(--text-light);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-red);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: #FF6B81;
  text-decoration: underline;
}

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

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* === 顶部导航 === */
.site-header {
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(12px);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  border-bottom: 1px solid rgba(233,69,96,0.15);
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(22, 33, 62, 0.98);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-link img {
  height: 42px;
  width: auto;
}

.logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-hot);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  color: var(--text-light);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent-red);
  background: rgba(233,69,96,0.1);
  text-decoration: none;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent-red);
  transition: var(--transition);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 60%;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-light);
  border-radius: 2px;
  transition: var(--transition);
}

/* === 搜索栏 === */
.search-bar-wrap {
  background: var(--bg-night);
  padding: 12px 0;
  margin-top: 68px;
  border-bottom: 1px solid rgba(15,52,96,0.5);
}

.search-bar {
  display: flex;
  align-items: center;
  max-width: 680px;
  margin: 0 auto;
  background: rgba(26, 26, 46, 0.8);
  border: 2px solid var(--deep-blue);
  border-radius: 40px;
  overflow: hidden;
  transition: var(--transition);
}

.search-bar:focus-within {
  border-color: var(--accent-red);
  box-shadow: 0 0 20px rgba(233,69,96,0.2);
}

.search-bar input {
  flex: 1;
  padding: 12px 24px;
  background: transparent;
  border: none;
  color: var(--text-light);
  font-size: 0.95rem;
  outline: none;
}

.search-bar input::placeholder {
  color: var(--text-muted);
}

.search-bar button {
  padding: 12px 28px;
  background: var(--gradient-hot);
  border: none;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.search-bar button:hover {
  opacity: 0.9;
}

/* === Hero Banner === */
.hero-section {
  position: relative;
  height: 520px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-section .hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.55);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 900;
  margin-bottom: 16px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.6);
  line-height: 1.3;
}

.hero-content h1 .brand-highlight {
  background: var(--gradient-hot);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.15rem;
  color: rgba(234,234,234,0.85);
  max-width: 640px;
  margin: 0 auto 28px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

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

/* === 按钮样式 === */
.btn-primary {
  display: inline-block;
  padding: 13px 32px;
  background: var(--gradient-hot);
  color: #fff;
  border: none;
  border-radius: 40px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  text-decoration: none;
  color: #fff;
}

.btn-outline {
  display: inline-block;
  padding: 13px 32px;
  background: transparent;
  color: var(--text-light);
  border: 2px solid rgba(234,234,234,0.4);
  border-radius: 40px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-outline:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
  text-decoration: none;
}

/* === 通用区块 === */
.section {
  padding: 72px 0;
}

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

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--gradient-hot);
  margin: 12px auto 0;
  border-radius: 2px;
}

.section-title p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* === 面包屑 === */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

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

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

.breadcrumb span {
  margin: 0 8px;
}

/* === 视频卡片网格 === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.video-card {
  background: rgba(22, 33, 62, 0.6);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(15,52,96,0.3);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(233,69,96,0.3);
}

.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
}

.video-thumb img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.video-card:hover .video-thumb img {
  transform: scale(1.05);
  filter: brightness(0.7);
}

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 60px;
  height: 60px;
  background: rgba(233,69,96,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 3;
}

.play-btn::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-left: 20px solid #fff;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  margin-left: 4px;
}

.video-card:hover .play-btn {
  transform: translate(-50%, -50%) scale(1);
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.78rem;
  z-index: 2;
}

.video-info {
  padding: 14px 16px;
}

.video-info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  gap: 14px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* === 特色模块卡片 === */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: rgba(22, 33, 62, 0.5);
  border: 1px solid rgba(15,52,96,0.3);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(233,69,96,0.3);
  box-shadow: var(--shadow-card);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-hot);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.6rem;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* === 专家展示 === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.expert-card {
  background: rgba(22, 33, 62, 0.5);
  border: 1px solid rgba(15,52,96,0.3);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  text-align: center;
}

.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.expert-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.expert-card .expert-info {
  padding: 20px;
}

.expert-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.expert-card .expert-role {
  color: var(--accent-red);
  font-size: 0.88rem;
  margin-bottom: 10px;
}

.expert-card p {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.5;
  margin-bottom: 14px;
}

.expert-card .expert-btns {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.expert-card .expert-btns a {
  padding: 6px 16px;
  font-size: 0.82rem;
  border-radius: 20px;
}

/* === 合作品牌 === */
.brand-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
  align-items: center;
}

.brand-wall .brand-item {
  background: rgba(22, 33, 62, 0.5);
  border: 1px solid rgba(15,52,96,0.3);
  border-radius: var(--radius-md);
  padding: 20px 30px;
  min-width: 160px;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.brand-wall .brand-item:hover {
  border-color: var(--accent-red);
  color: var(--text-light);
}

/* === FAQ === */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: rgba(22, 33, 62, 0.5);
  border: 1px solid rgba(15,52,96,0.3);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(233,69,96,0.3);
}

.faq-question {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--accent-red);
}

.faq-question .faq-toggle {
  font-size: 1.4rem;
  transition: var(--transition);
  color: var(--accent-red);
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 24px 18px;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* === 用户评论 === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.review-card {
  background: rgba(22, 33, 62, 0.5);
  border: 1px solid rgba(15,52,96,0.3);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(233,69,96,0.2);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-hot);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  flex-shrink: 0;
}

.review-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.review-stars {
  color: #FFD700;
  font-size: 0.85rem;
  margin-top: 2px;
}

.review-text {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  font-style: italic;
}

/* === 联系我们 === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  align-items: start;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  background: rgba(22, 33, 62, 0.5);
  border-radius: var(--radius-md);
  border: 1px solid rgba(15,52,96,0.3);
}

.contact-item .ci-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-hot);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
}

.contact-item .ci-text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-item .ci-text p {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.contact-qrcodes {
  display: flex;
  gap: 24px;
  justify-content: center;
}

.qrcode-box {
  text-align: center;
}

.qrcode-box img {
  width: 160px;
  height: 160px;
  border-radius: var(--radius-md);
  border: 2px solid rgba(15,52,96,0.3);
  margin-bottom: 8px;
}

.qrcode-box p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* === 页脚 === */
.site-footer {
  background: rgba(15, 15, 30, 0.95);
  border-top: 1px solid rgba(15,52,96,0.3);
  padding: 48px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(15,52,96,0.2);
}

.footer-brand .logo-link {
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-light);
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-col ul li a:hover {
  color: var(--accent-red);
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.footer-bottom .update-time {
  margin-top: 6px;
  color: var(--text-muted);
}

/* === 社交分享 === */
.share-bar {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  color: #fff;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.share-btn:hover {
  transform: translateY(-2px);
  opacity: 0.9;
  text-decoration: none;
  color: #fff;
}

.share-btn.wechat { background: #07C160; }
.share-btn.weibo { background: #E6162D; }
.share-btn.douyin { background: #161823; border: 1px solid #333; }
.share-btn.bilibili { background: #00A1D6; }

/* === 标签 === */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(83, 52, 131, 0.3);
  border: 1px solid rgba(83, 52, 131, 0.5);
  border-radius: 20px;
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.tag:hover {
  background: rgba(233,69,96,0.2);
  border-color: var(--accent-red);
  color: var(--accent-red);
}

/* === 数据统计 === */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 40px 0;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: 2.4rem;
  font-weight: 900;
  background: var(--gradient-hot);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* === How-To 指南 === */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.howto-step {
  background: rgba(22, 33, 62, 0.5);
  border: 1px solid rgba(15,52,96,0.3);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  position: relative;
  counter-increment: step;
}

.howto-step::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--gradient-hot);
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 16px;
}

.howto-step h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.howto-step p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* === 内页布局 === */
.page-hero {
  position: relative;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 68px;
  background: var(--gradient-ocean);
  text-align: center;
}

.page-hero h1 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.page-hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

.page-hero .hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4);
}

.page-hero .hero-content {
  position: relative;
  z-index: 2;
}

.page-content {
  padding: 48px 0;
}

/* === 懒加载占位 === */
.lazy-placeholder {
  background: rgba(22, 33, 62, 0.8);
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* === 回到顶部 === */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--gradient-hot);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  border: none;
  color: #fff;
  font-size: 1.2rem;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

/* === 响应式设计 === */
@media (max-width: 1024px) {
  .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
  .howto-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(26, 26, 46, 0.98);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid rgba(15,52,96,0.3);
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    width: 100%;
    padding: 12px 16px;
  }
  .hero-section {
    height: 400px;
  }
  .hero-content h1 {
    font-size: 1.8rem;
  }
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .feature-grid,
  .expert-grid {
    grid-template-columns: 1fr;
  }
  .review-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .stats-bar {
    gap: 24px;
  }
  .section {
    padding: 48px 0;
  }
  .section-title h2 {
    font-size: 1.5rem;
  }
  .howto-steps {
    grid-template-columns: 1fr;
  }
  .page-hero {
    height: 220px;
  }
}

@media (max-width: 480px) {
  .video-grid {
    grid-template-columns: 1fr;
  }
  .hero-section {
    height: 340px;
  }
  .hero-content h1 {
    font-size: 1.5rem;
  }
  .contact-qrcodes {
    flex-direction: column;
    align-items: center;
  }
}

/* === 面包屑容器 === */
.breadcrumb-wrap {
  background: rgba(15,52,96,0.3);
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.breadcrumb-wrap .breadcrumb {
  margin: 0;
  padding: 0;
}

/* === 内容块 === */
.content-block {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.9;
}

.content-block p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.content-block h3 {
  color: var(--text-light);
  margin-bottom: 12px;
  font-size: 1.15rem;
}

.content-block strong {
  color: var(--accent-red);
}