/* ================================
   CSS变量
   ================================ */
:root {
  --color-primary: #D92121;
  --color-primary-dark: #B91C1C;
  --color-primary-light: #FEE2E2;
  --color-secondary: #2C3E50;
  --color-gold: #D4AF37;
  --color-gold-light: #F5E6B8;
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* ================================
   基础样式
   ================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  color: var(--color-gray-700);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }

/* 通用类 */
.text-primary { color: var(--color-primary); }
.text-gold { color: var(--color-gold); }
.text-secondary { color: var(--color-secondary); }
.bg-primary { background-color: var(--color-primary); }
.bg-gold { background-color: var(--color-gold); }

/* ================================
   加载动画
   ================================ */
.loader {
  position: fixed; inset: 0;
  background: var(--color-white);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s, visibility 0.5s;
}
.loader.hidden { opacity: 0; visibility: hidden; }
.loader-inner { text-align: center; }
.loader-logo { margin-bottom: 1.5rem; }
.loader-bar {
  width: 200px; height: 3px; background: var(--color-gray-200); border-radius: 3px; overflow: hidden;
}
.loader-progress {
  height: 100%; width: 0; background: var(--color-primary); border-radius: 3px;
  animation: loadProgress 1.5s ease forwards;
}
@keyframes loadProgress { to { width: 100%; } }

/* ================================
   导航栏
   ================================ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  transition: all var(--transition-normal);
  padding: 0;
}
.navbar.scrolled {
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}
.nav-link {
  font-size: 0.9375rem; font-weight: 500; color: rgba(255,255,255,0.9);
  transition: color var(--transition-fast);
  position: relative;
}
.nav-link::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--color-primary);
  transition: width var(--transition-normal);
}
.nav-link:hover, .nav-link.active { color: var(--color-primary); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.navbar.scrolled .nav-link { color: var(--color-gray-600); }
.navbar.scrolled .nav-link:hover, .navbar.scrolled .nav-link.active { color: var(--color-primary); }

/* 移动端菜单 */
.mobile-menu {
  display: none; position: fixed; inset: 0; top: 0;
  background: var(--color-white); z-index: 1001;
  flex-direction: column;
}
.mobile-menu.active { display: flex; }
.mobile-nav-link {
  font-size: 1.125rem; font-weight: 600; color: var(--color-gray-700);
  padding: 0.75rem 0; border-bottom: 1px solid var(--color-gray-100);
}
.mobile-nav-link:hover { color: var(--color-primary); }

/* ================================
   按钮
   ================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600; border-radius: 12px;
  transition: all var(--transition-normal);
  cursor: pointer; border: none; outline: none;
}
.btn-primary {
  background: var(--color-primary); color: var(--color-white);
  box-shadow: 0 4px 14px rgba(217,33,33,0.3);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 6px 20px rgba(217,33,33,0.4);
  transform: translateY(-2px);
}
.btn-outline-white {
  background: transparent; color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline-white:hover {
  background: var(--color-white); color: var(--color-primary);
}

/* ================================
   英雄区
   ================================ */
.hero-section {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transform: scale(1.05);
  animation: heroZoom 20s ease infinite alternate;
}
@keyframes heroZoom {
  from { transform: scale(1.05); }
  to { transform: scale(1.15); }
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(44,62,80,0.85) 0%, rgba(217,33,33,0.6) 100%);
}
.hero-content {
  position: relative; z-index: 2; text-align: center; color: var(--color-white);
  padding-top: 80px;
}
.hero-badge {
  display: inline-block; background: rgba(217,33,33,0.3);
  border: 1px solid rgba(217,33,33,0.5);
  padding: 0.5rem 1.25rem; border-radius: 50px;
  font-size: 0.875rem; font-weight: 500; margin-bottom: 1.5rem;
  backdrop-filter: blur(4px);
}
.hero-title {
  font-size: 3.5rem; font-weight: 900; line-height: 1.2;
  margin-bottom: 1.5rem;
}
.hero-subtitle {
  font-size: 1.25rem; color: rgba(255,255,255,0.85);
  max-width: 600px; margin: 0 auto 2.5rem;
}
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-wave {
  position: absolute; bottom: 0; left: 0; right: 0; z-index: 2;
}
.hero-wave svg { display: block; width: 100%; height: auto; }

/* ================================
   数字统计
   ================================ */
.stat-card {
  background: var(--color-white); border-radius: 20px;
  padding: 2rem 1.5rem; text-align: center;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-normal);
  border: 1px solid var(--color-gray-100);
}
.stat-card:hover { transform: translateY(-4px); }
.stat-icon {
  width: 56px; height: 56px; margin: 0 auto 1rem;
  background: var(--color-primary-light); border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: var(--color-primary);
}
.stat-number {
  font-size: 3rem; font-weight: 900; color: var(--color-primary);
  display: inline; line-height: 1;
}
.stat-suffix {
  font-size: 1.5rem; font-weight: 700; color: var(--color-primary);
  display: inline;
}
.stat-label {
  font-size: 0.9375rem; color: var(--color-gray-500);
  margin-top: 0.5rem; font-weight: 500;
}

/* ================================
   区块标题通用
   ================================ */
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-badge {
  display: inline-block; background: var(--color-primary-light);
  color: var(--color-primary); font-size: 0.8125rem; font-weight: 600;
  padding: 0.375rem 1rem; border-radius: 50px; margin-bottom: 1rem;
  letter-spacing: 0.05em;
}
.section-title {
  font-size: 2.25rem; font-weight: 800; color: var(--color-secondary);
  margin-bottom: 0.75rem;
}
.section-subtitle {
  font-size: 1.0625rem; color: var(--color-gray-500);
}

/* ================================
   媒体资源板块
   ================================ */
.media-section {
  background: var(--color-gray-50); padding: 100px 0;
}

/* 筛选按钮 */
.filter-btn {
  padding: 0.5rem 1.25rem; border-radius: 50px;
  font-size: 0.875rem; font-weight: 500;
  background: var(--color-white); color: var(--color-gray-600);
  border: 1px solid var(--color-gray-200);
  cursor: pointer; transition: all var(--transition-fast);
}
.filter-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-btn.active {
  background: var(--color-primary); color: var(--color-white);
  border-color: var(--color-primary);
}

/* 资源卡片网格 */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* 单个资源卡片 */
.media-card {
  background: var(--color-white); border-radius: 16px;
  overflow: hidden; cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border: 1px solid var(--color-gray-100);
}
.media-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}
.media-card-img {
  width: 100%; height: 200px; object-fit: cover;
  transition: transform var(--transition-normal);
}
.media-card:hover .media-card-img { transform: scale(1.05); }
.media-card-img-wrap { overflow: hidden; position: relative; }
.media-card-tag {
  position: absolute; top: 12px; left: 12px;
  background: var(--color-primary); color: var(--color-white);
  font-size: 0.75rem; font-weight: 600;
  padding: 0.25rem 0.75rem; border-radius: 50px;
}
.media-card-body { padding: 1.25rem; }
.media-card-title {
  font-size: 1.0625rem; font-weight: 700; color: var(--color-secondary);
  margin-bottom: 0.5rem;
}
.media-card-desc {
  font-size: 0.875rem; color: var(--color-gray-500);
  line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.media-card-footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--color-gray-100);
  display: flex; align-items: center; justify-content: space-between;
}
.media-card-more {
  font-size: 0.8125rem; color: var(--color-primary);
  font-weight: 600;
}
.media-card-more i { margin-left: 4px; transition: transform var(--transition-fast); }
.media-card:hover .media-card-more i { transform: translateX(4px); }

/* ================================
   弹窗
   ================================ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
  backdrop-filter: blur(4px);
  animation: fadeIn 0.3s ease;
}
.modal-content {
  background: var(--color-white);
  border-radius: 20px;
  max-width: 800px; width: 100%;
  max-height: 90vh; overflow-y: auto;
  position: relative;
  animation: slideUp 0.3s ease;
}
.modal-close {
  position: absolute; top: 16px; right: 16px; z-index: 10;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--color-gray-100);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; border: none; font-size: 1rem; color: var(--color-gray-600);
  transition: all var(--transition-fast);
}
.modal-close:hover { background: var(--color-gray-200); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* 弹窗内详情 */
.modal-hero-img {
  width: 100%; height: 300px; object-fit: cover;
  border-radius: 20px 20px 0 0;
}
.modal-body-content { padding: 2rem; }
.modal-body-content h3 {
  font-size: 1.5rem; font-weight: 800; color: var(--color-secondary);
  margin-bottom: 0.75rem;
}
.modal-body-content .modal-tag {
  display: inline-block; background: var(--color-primary-light);
  color: var(--color-primary); font-size: 0.75rem; font-weight: 600;
  padding: 0.25rem 0.75rem; border-radius: 50px; margin-bottom: 1rem;
}
.modal-body-content .modal-location {
  color: var(--color-gray-500); font-size: 0.9375rem;
  margin-bottom: 1rem;
}
.modal-body-content .modal-location i { color: var(--color-primary); margin-right: 0.5rem; }
.modal-body-content .modal-intro {
  color: var(--color-gray-600); line-height: 1.8;
  margin-bottom: 1.5rem;
}
.modal-advantages {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.modal-advantage-item {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.9375rem; color: var(--color-gray-700);
}
.modal-advantage-item i { color: var(--color-gold); font-size: 0.75rem; }
.modal-gallery {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem;
}
.modal-gallery img {
  width: 100%; height: 180px; object-fit: cover; border-radius: 12px;
}

/* ================================
   成功案例
   ================================ */
.cases-section {
  background: var(--color-white); padding: 100px 0;
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}
.case-card {
  background: var(--color-gray-50); border-radius: 12px;
  padding: 1.25rem 1rem; text-align: center;
  border: 1px solid var(--color-gray-100);
  cursor: pointer; transition: all var(--transition-normal);
  position: relative; overflow: hidden;
}
.case-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.case-card-logo {
  width: 80px; height: 40px; object-fit: contain;
  margin: 0 auto 0.75rem;
}
.case-card-name {
  font-size: 0.9375rem; font-weight: 700; color: var(--color-secondary);
  margin-bottom: 0.25rem;
}
.case-card-industry {
  font-size: 0.75rem; color: var(--color-gray-400);
  background: var(--color-gray-100); padding: 0.125rem 0.5rem;
  border-radius: 50px; display: inline-block;
}
/* 悬停显示详情 */
.case-card-tooltip {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(to top, var(--color-primary), rgba(217,33,33,0.9));
  color: white; padding: 1rem;
  transform: translateY(100%);
  transition: transform var(--transition-normal);
  font-size: 0.8125rem;
  border-radius: 0 0 12px 12px;
}
.case-card:hover .case-card-tooltip { transform: translateY(0); }
.case-card-tooltip p { margin-bottom: 0.25rem; }
.case-card-tooltip strong { color: var(--color-gold); }

/* ================================
   风火GEO科技感板块
   ================================ */
.geo-section {
  position: relative; padding: 120px 0;
  background: #0a0a1a;
  overflow: hidden;
}
/* 网格背景 */
.geo-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(217,33,33,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(217,33,33,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridMove 20s linear infinite;
}
@keyframes gridMove {
  from { transform: translate(0,0); }
  to { transform: translate(60px,60px); }
}
/* 粒子 */
.geo-particles { position: absolute; inset: 0; pointer-events: none; }
.geo-particle {
  position: absolute; width: 4px; height: 4px;
  background: var(--color-primary); border-radius: 50%;
  opacity: 0.3;
  animation: particleFloat 8s ease-in-out infinite;
}
.geo-particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; }
.geo-particle:nth-child(2) { left: 30%; top: 60%; animation-delay: 2s; }
.geo-particle:nth-child(3) { left: 60%; top: 30%; animation-delay: 4s; }
.geo-particle:nth-child(4) { left: 80%; top: 70%; animation-delay: 1s; }
.geo-particle:nth-child(5) { left: 50%; top: 50%; animation-delay: 3s; }
@keyframes particleFloat {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.3; }
  50% { transform: translateY(-30px) scale(1.5); opacity: 0.6; }
}
.geo-badge {
  display: inline-block;
  background: rgba(217,33,33,0.2); border: 1px solid rgba(217,33,33,0.4);
  color: var(--color-primary); font-size: 0.8125rem; font-weight: 600;
  padding: 0.5rem 1.25rem; border-radius: 50px;
  margin-bottom: 1.5rem;
}
.geo-title {
  font-size: 3rem; font-weight: 900; color: var(--color-white);
  background: linear-gradient(135deg, #fff 0%, var(--color-primary) 50%, var(--color-gold) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
}
.geo-subtitle {
  font-size: 1.25rem; color: var(--color-gray-400);
}
/* AI平台logo */
.geo-platform-logo {
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  transition: transform var(--transition-normal);
}
.geo-platform-logo:hover { transform: translateY(-4px); }
.geo-platform-logo img {
  width: 56px; height: 56px;
  border: 2px solid rgba(255,255,255,0.1);
  transition: border-color var(--transition-fast);
}
.geo-platform-logo:hover img { border-color: var(--color-primary); }
.geo-platform-logo span {
  font-size: 0.75rem; color: var(--color-gray-500);
}
/* GEO功能卡片 */
.geo-feature-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px; padding: 1.5rem 1rem;
  text-align: center;
  transition: all var(--transition-normal);
}
.geo-feature-card:hover {
  background: rgba(217,33,33,0.08);
  border-color: rgba(217,33,33,0.3);
  box-shadow: 0 0 30px rgba(217,33,33,0.1);
}
.geo-feature-icon {
  font-size: 1.5rem; color: var(--color-primary);
  margin-bottom: 0.75rem;
}
.geo-feature-title {
  font-size: 0.9375rem; font-weight: 700; color: var(--color-white);
  margin-bottom: 0.5rem;
}
.geo-feature-desc {
  font-size: 0.8125rem; color: var(--color-gray-500);
  line-height: 1.6;
}
/* CTA按钮 */
.geo-cta-btn {
  display: inline-flex; align-items: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-gold) 100%);
  color: var(--color-white); font-size: 1.125rem; font-weight: 700;
  padding: 1rem 2.5rem; border-radius: 50px;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 20px rgba(217,33,33,0.4);
}
.geo-cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(217,33,33,0.5);
}

/* ================================
   合作伙伴
   ================================ */
.partners-section {
  background: var(--color-gray-50); padding: 60px 0;
  border-top: 1px solid var(--color-gray-100);
  border-bottom: 1px solid var(--color-gray-100);
}
.partner-logo {
  height: 40px; width: auto; opacity: 0.5;
  filter: grayscale(100%);
  transition: all var(--transition-normal);
}
.partner-logo:hover { opacity: 1; filter: grayscale(0); }

/* ================================
   新闻资讯
   ================================ */
.news-section {
  background: var(--color-white); padding: 100px 0;
}
.news-item {
  display: flex; gap: 1.5rem; align-items: flex-start;
  padding: 1.5rem; border-radius: 16px;
  border: 1px solid var(--color-gray-100);
  transition: all var(--transition-normal);
  background: var(--color-white);
}
.news-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}
.news-item-img {
  width: 200px; min-width: 200px; height: 130px;
  object-fit: cover; border-radius: 12px;
}
.news-item-body { flex: 1; }
.news-item-date {
  font-size: 0.8125rem; color: var(--color-gray-400);
  margin-bottom: 0.5rem;
}
.news-item-title {
  font-size: 1.125rem; font-weight: 700; color: var(--color-secondary);
  margin-bottom: 0.5rem;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item-title:hover { color: var(--color-primary); }
.news-item-summary {
  font-size: 0.875rem; color: var(--color-gray-500);
  line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ================================
   联系我们（精简版）
   ================================ */
.contact-section {
  background: var(--color-gray-50); padding: 100px 0;
}
.contact-card {
  background: var(--color-white); border-radius: 20px;
  padding: 2rem; text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-100);
  transition: all var(--transition-normal);
}
.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.contact-card-icon {
  width: 64px; height: 64px; margin: 0 auto 1.25rem;
  background: var(--color-primary-light); border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: var(--color-primary);
}
.contact-card-title {
  font-size: 1.0625rem; font-weight: 700; color: var(--color-secondary);
  margin-bottom: 0.75rem;
}
.contact-card-text {
  font-size: 0.9375rem; color: var(--color-gray-600);
  line-height: 1.7;
}

/* ================================
   页脚
   ================================ */
.footer-section {
  background: var(--color-gray-900); color: var(--color-gray-400);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 1.5rem 0;
}
.footer-copyright {
  text-align: center; font-size: 0.8125rem; color: var(--color-gray-500);
}

/* ================================
   回到顶部
   ================================ */
.scroll-top-btn {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--color-primary); color: var(--color-white);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; cursor: pointer; border: none;
  box-shadow: 0 4px 14px rgba(217,33,33,0.3);
  opacity: 0; visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 100;
}
.scroll-top-btn.visible { opacity: 1; visibility: visible; }
.scroll-top-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(217,33,33,0.4);
}

/* ================================
   响应式
   ================================ */
@media (max-width: 1024px) {
  .hero-title { font-size: 2.5rem; }
  .geo-title { font-size: 2.25rem; }
  .modal-advantages { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }
  .section-title { font-size: 1.75rem; }
  .stat-number { font-size: 2.25rem; }
  .media-grid { grid-template-columns: 1fr 1fr; }
  .cases-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .news-item { flex-direction: column; }
  .news-item-img { width: 100%; min-width: unset; height: 200px; }
  .geo-title { font-size: 2rem; }
  .modal-hero-img { height: 200px; }
  .modal-gallery { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.75rem; }
  .media-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; align-items: center; }
  .geo-title { font-size: 1.5rem; }
}
/* ================================
   全域覆盖板块
   ================================ */
.coverage-section {
  background: var(--color-white);
  padding: 100px 0;
}
.coverage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}
.coverage-card {
  background: var(--color-gray-50);
  border-radius: 16px;
  padding: 1.5rem;
  border: 1px solid var(--color-gray-100);
  transition: all var(--transition-normal);
}
.coverage-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.coverage-card-main {
  background: var(--color-primary-light);
  border-color: rgba(217,33,33,0.2);
}
.coverage-card-main:hover {
  border-color: var(--color-primary);
}
.coverage-card-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1rem; padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-gray-200);
}
.coverage-card-main .coverage-card-header {
  border-bottom-color: rgba(217,33,33,0.2);
}
.coverage-city {
  font-size: 1.125rem; font-weight: 700; color: var(--color-secondary);
}
.coverage-card-main .coverage-city { color: var(--color-primary); }
.coverage-count {
  font-size: 0.8125rem; color: var(--color-gray-400);
  background: var(--color-white); padding: 0.25rem 0.75rem;
  border-radius: 50px;
}
.coverage-card-main .coverage-count {
  background: var(--color-primary); color: var(--color-white);
}
.coverage-counties {
  display: flex; flex-wrap: wrap; gap: 0.375rem;
  margin-bottom: 1rem;
}
.coverage-county {
  font-size: 0.75rem; color: var(--color-gray-600);
  background: var(--color-white); padding: 0.25rem 0.625rem;
  border-radius: 6px; border: 1px solid var(--color-gray-200);
}
.coverage-card-main .coverage-county {
  background: var(--color-white); border-color: rgba(217,33,33,0.15);
}
.coverage-resources {
  display: flex; flex-wrap: wrap; gap: 0.375rem;
}
.coverage-resource {
  font-size: 0.6875rem; font-weight: 600; color: var(--color-primary);
  background: rgba(217,33,33,0.08); padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

/* 响应式补充 */
@media (max-width: 768px) {
  .coverage-grid { grid-template-columns: 1fr; }
}

/* ================================
   AI平台Logo卡片 V4
   ================================ */
.ai-logo-card {
  display: flex; flex-direction: column; align-items: center; gap: 0.625rem;
  transition: transform var(--transition-normal);
  text-decoration: none;
  padding: 0.75rem;
}
.ai-logo-card:hover { transform: translateY(-6px); }
.ai-logo-img {
  width: 64px; height: 64px; border-radius: 16px;
  object-fit: contain; padding: 6px;
  background: rgba(255,255,255,0.9);
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  border: 2px solid rgba(255,255,255,0.15);
  transition: all var(--transition-normal);
}
.ai-logo-card:hover .ai-logo-img {
  border-color: var(--color-primary);
  box-shadow: 0 6px 25px rgba(217,33,33,0.4);
  transform: scale(1.1);
}
.ai-logo-name {
  font-size: 0.75rem; color: var(--color-gray-400);
  font-weight: 600; text-align: center;
  transition: color var(--transition-fast);
}
.ai-logo-card:hover .ai-logo-name { color: var(--color-primary); }

/* ================================
   县域可点击链接
   ================================ */
.coverage-county-link {
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  color: var(--color-gray-600);
}
.coverage-county-link:hover {
  background: var(--color-primary) !important;
  color: var(--color-white) !important;
  border-color: var(--color-primary) !important;
  transform: translateY(-1px);
}

/* ==================== 媒体选单按钮样式 ==================== */
.media-cart-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  background: linear-gradient(135deg, #059669, #047857);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.media-cart-btn:hover {
  background: linear-gradient(135deg, #047857, #065F46);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(5, 150, 105, 0.3);
}
.media-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.detail-cart-btn:hover {
  background: #047857 !important;
  transform: translateY(-1px);
}
.county-cart-btn:hover {
  background: #B91C1C !important;
}
/* ================================
   移动端全面优化 V7.1
   ================================ */
/* 导航栏移动端优化 */
@media (max-width: 768px) {
  .navbar .flex.items-center.justify-between { height: 60px !important; }
  .navbar .flex.items-center.gap-2 span.text-lg { font-size: 0.9rem !important; max-width: 180px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .navbar .flex.items-center.gap-2 span.block.text-xs { display: none !important; }
}
/* Hero区移动端优化 */
@media (max-width: 768px) {
  .hero-section { min-height: 85vh !important; }
  .hero-content { padding-top: 70px !important; padding-bottom: 60px !important; }
  .hero-badge { font-size: 0.75rem !important; padding: 0.375rem 1rem !important; margin-bottom: 1rem !important; }
  .hero-title { font-size: 1.75rem !important; line-height: 1.3 !important; margin-bottom: 1rem !important; }
  .hero-subtitle { font-size: 0.9rem !important; line-height: 1.7 !important; margin-bottom: 1.5rem !important; }
  .hero-actions { gap: 0.75rem !important; }
  .hero-actions .btn { font-size: 0.9rem !important; padding: 0.75rem 1.5rem !important; }
}
/* 数字统计移动端优化 */
@media (max-width: 768px) {
  .stats-section { padding: 3rem 0 !important; }
  .stat-card { padding: 1.25rem 1rem !important; border-radius: 14px !important; }
  .stat-icon { width: 44px !important; height: 44px !important; font-size: 1.25rem !important; margin-bottom: 0.75rem !important; }
  .stat-number { font-size: 1.75rem !important; }
  .stat-suffix { font-size: 1.125rem !important; }
  .stat-label { font-size: 0.8125rem !important; margin-top: 0.25rem !important; }
}
/* 媒体资源筛选按钮移动端优化 */
@media (max-width: 768px) {
  .media-section { padding: 60px 0 !important; }
  #media-filters { display: flex !important; flex-wrap: wrap !important; gap: 0.375rem !important; justify-content: center !important; padding: 0 0.5rem !important; }
  .filter-btn { padding: 0.375rem 0.75rem !important; font-size: 0.75rem !important; border-radius: 20px !important; white-space: nowrap !important; }
  .filter-btn i { display: none !important; }
  .media-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 0.75rem !important; }
  .media-card { border-radius: 12px !important; overflow: hidden !important; }
  .media-card-img-wrap { height: 120px !important; }
  .media-card-body { padding: 0.75rem !important; }
  .media-card-title { font-size: 0.875rem !important; margin-bottom: 0.25rem !important; }
  .media-card-desc { font-size: 0.75rem !important; -webkit-line-clamp: 2 !important; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; }
  .media-card-tag { font-size: 0.625rem !important; padding: 0.125rem 0.5rem !important; top: 6px !important; left: 6px !important; }
  .media-card-footer { padding: 0.5rem 0.75rem !important; }
  .media-card-more { font-size: 0.75rem !important; }
  .media-cart-btn { padding: 4px 10px !important; font-size: 0.6875rem !important; border-radius: 4px !important; }
}
@media (max-width: 480px) {
  .media-grid { grid-template-columns: 1fr !important; gap: 0.625rem !important; }
  .media-card-img-wrap { height: 160px !important; }
  .media-card-body { padding: 0.875rem !important; }
}
/* 全域覆盖移动端优化 */
@media (max-width: 768px) {
  .coverage-section { padding: 60px 0 !important; }
  .coverage-grid { grid-template-columns: 1fr !important; gap: 1rem !important; }
  .coverage-card { padding: 1rem !important; border-radius: 12px !important; }
  .coverage-counties { gap: 0.25rem !important; margin-bottom: 0.75rem !important; }
  .coverage-county { font-size: 0.6875rem !important; padding: 0.125rem 0.5rem !important; }
  .coverage-resources { gap: 0.25rem !important; }
  .coverage-resource { font-size: 0.625rem !important; padding: 0.125rem 0.375rem !important; }
}
/* 成功案例移动端优化 */
@media (max-width: 768px) {
  .cases-section { padding: 60px 0 !important; }
  .cases-grid { grid-template-columns: repeat(3, 1fr) !important; gap: 0.75rem !important; }
  .case-card { padding: 0.875rem !important; border-radius: 12px !important; }
  .case-card-logo { height: 28px !important; }
  .case-card-name { font-size: 0.6875rem !important; margin-top: 0.375rem !important; }
}
@media (max-width: 480px) {
  .cases-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 0.5rem !important; }
}
/* 风火GEO移动端优化 */
@media (max-width: 768px) {
  .geo-section { padding: 60px 0 !important; }
  .geo-title { font-size: 1.75rem !important; margin-bottom: 0.5rem !important; }
  .geo-subtitle { font-size: 1rem !important; }
  .geo-badge { font-size: 0.75rem !important; padding: 0.375rem 1rem !important; margin-bottom: 1rem !important; }
  .ai-logo-card { padding: 0.5rem !important; gap: 0.25rem !important; }
  .ai-logo-img { width: 48px !important; height: 48px !important; border-radius: 12px !important; }
  .ai-logo-name { font-size: 0.625rem !important; }
  .geo-feature-card { padding: 1rem 0.75rem !important; border-radius: 12px !important; }
  .geo-feature-title { font-size: 0.8125rem !important; }
  .geo-feature-desc { font-size: 0.75rem !important; }
  .geo-cta-btn { font-size: 0.9375rem !important; padding: 0.75rem 2rem !important; }
}
/* 新闻资讯移动端优化 */
@media (max-width: 768px) {
  .news-section { padding: 60px 0 !important; }
  .news-item { padding: 1rem !important; border-radius: 12px !important; gap: 1rem !important; }
  .news-item-img { height: 160px !important; border-radius: 10px !important; }
  .news-item-title { font-size: 1rem !important; }
  .news-item-summary { font-size: 0.8125rem !important; }
}
/* 联系我们移动端优化 */
@media (max-width: 768px) {
  .contact-section { padding: 60px 0 !important; }
  .contact-card { padding: 1.5rem !important; border-radius: 14px !important; }
  .contact-card-icon { width: 52px !important; height: 52px !important; font-size: 1.25rem !important; }
}
/* 页脚移动端优化 */
@media (max-width: 768px) {
  .footer-section .max-w-7xl { padding-top: 2.5rem !important; padding-bottom: 2.5rem !important; }
  .footer-bottom { padding: 1rem 0 !important; }
  .footer-copyright { font-size: 0.75rem !important; line-height: 1.6 !important; }
}
/* 通用section标题移动端优化 */
@media (max-width: 768px) {
  .section-header { margin-bottom: 2rem !important; }
  .section-badge { font-size: 0.75rem !important; padding: 0.25rem 0.75rem !important; margin-bottom: 0.75rem !important; }
  .section-title { font-size: 1.5rem !important; margin-bottom: 0.5rem !important; }
  .section-subtitle { font-size: 0.9375rem !important; }
}
/* 回到顶部按钮移动端 */
@media (max-width: 768px) {
  .scroll-top-btn { width: 40px !important; height: 40px !important; bottom: 1.25rem !important; right: 1.25rem !important; font-size: 0.875rem !important; }
}
/* 移动端菜单优化 */
@media (max-width: 768px) {
  .mobile-nav-link { font-size: 1rem !important; padding: 0.625rem 0 !important; }
}

/* ==================== 提交反馈Toast提示 ==================== */
.submit-toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  z-index: 99999;
  opacity: 0;
  transition: all 0.3s ease;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}
.submit-toast.toast-show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.submit-toast.toast-success {
  background: #10B981;
  color: #fff;
}
.submit-toast.toast-error {
  background: #EF4444;
  color: #fff;
}
.submit-toast i {
  font-size: 18px;
}