/* ====================================================
   智慧互动 官网样式
   版本: 2.0 | 亮色专业主题 | 移动优先
   ==================================================== */

/* ===== 1. CSS变量 & 设计系统 ===== */
:root {
  /* 主色调 */
  --color-primary:        #0052CC;
  --color-primary-dark:   #003E99;
  --color-primary-light:  #4C9AFF;
  --color-accent:         #00C6FF;
  --color-accent-dark:    #0099CC;

  /* 功能色 */
  --color-success:  #00875A;
  --color-warning:  #FF8B00;
  --color-danger:   #DE350B;
  --color-info:     #0065FF;

  /* 中性色 */
  --color-white:    #FFFFFF;
  --color-gray-50:  #F8F9FA;
  --color-gray-100: #F1F3F5;
  --color-gray-200: #E9ECEF;
  --color-gray-300: #DEE2E6;
  --color-gray-400: #CED4DA;
  --color-gray-500: #ADB5BD;
  --color-gray-600: #6C757D;
  --color-gray-700: #495057;
  --color-gray-800: #343A40;
  --color-gray-900: #212529;

  /* 文字色 */
  --color-text-primary:   #1A1D23;
  --color-text-secondary: #4A5568;
  --color-text-muted:     #718096;
  --color-text-inverse:   #FFFFFF;

  /* 背景色 */
  --color-bg-body:    #FFFFFF;
  --color-bg-section: #F8FAFF;
  --color-bg-card:    #FFFFFF;
  --color-bg-hover:   #F0F5FF;

  /* 边框 */
  --color-border:       #E2E8F0;
  --color-border-light: #EDF2F7;
  --color-border-focus: #0052CC;

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #0052CC 0%, #00C6FF 100%);
  --gradient-hero-1:  linear-gradient(135deg, #003E99 0%, #0052CC 50%, #0065FF 100%);
  --gradient-hero-2:  linear-gradient(135deg, #0D1B2A 0%, #0052CC 60%, #00C6FF 100%);
  --gradient-hero-3:  linear-gradient(135deg, #1A0A00 0%, #C43B00 60%, #FF6B35 100%);

  /* 阴影 */
  --shadow-xs:  0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm:  0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md:  0 4px 16px rgba(0, 0, 0, 0.10);
  --shadow-lg:  0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl:  0 16px 48px rgba(0, 0, 0, 0.15);
  --shadow-card: 0 2px 12px rgba(0, 82, 204, 0.08);
  --shadow-hover: 0 8px 32px rgba(0, 82, 204, 0.18);

  /* 圆角 */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Helvetica Neue', Arial, 'Microsoft YaHei', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', Consolas, monospace;

  /* 字号 */
  --text-xs:   12px;
  --text-sm:   14px;
  --text-base: 16px;
  --text-lg:   18px;
  --text-xl:   20px;
  --text-2xl:  24px;
  --text-3xl:  30px;
  --text-4xl:  36px;
  --text-5xl:  48px;
  --text-6xl:  60px;

  /* 行高 */
  --leading-tight:  1.25;
  --leading-snug:   1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* 过渡 */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-bounce: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* 布局 */
  --container-max: 1240px;
  --container-pad: 24px;
  --header-height: 72px;
  --top-bar-height: 36px;
  --section-pad-y:  80px;
}

/* ===== 2. Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden; /* 禁止全局横向滚动 */
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-body);
  overflow-x: hidden; /* 移动端无横向滚动 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, svg {
  max-width: 100%;
  height: auto;

}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol { list-style: none; }

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

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* 焦点样式（无障碍） */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* 跳过链接（无障碍） */
.skip-link {
  position: absolute;
  top: -100%;
  left: 8px;
  padding: 8px 16px;
  background: var(--color-primary);
  color: white;
  z-index: 9999;
  border-radius: var(--radius-md);
  font-weight: 600;
}
.skip-link:focus { top: 8px; }

/* ===== 3. 工具类 ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section-pad { padding: var(--section-pad-y) 0; }
.bg-light { background-color: var(--color-bg-section); }

/* 视觉隐藏（屏幕阅读器可读） */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* ===== 4. 按钮系统 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 24px;
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.25;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: 0 2px 8px rgba(0, 82, 204, 0.3);
}
.btn-primary:hover, .btn-primary:focus {
  background: linear-gradient(135deg, #003E99 0%, #0099CC 100%);
  box-shadow: 0 6px 20px rgba(0, 82, 204, 0.45);
  transform: translateY(-1px);
  color: var(--color-white);
}
.btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-sm); }

.btn-outline-white {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.7);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-white);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-sm  { padding: 7px 16px; font-size: var(--text-sm); }
.btn-lg  { padding: 14px 32px; font-size: var(--text-lg); }
.btn-block { width: 100%; }

/* ===== 5. 徽章 ===== */
.badge-hot {
  display: inline-block;
  padding: 2px 7px;
  background: linear-gradient(90deg, #FF6B35, #FF3B3B);
  color: white;
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--radius-full);
  vertical-align: middle;
  letter-spacing: 0.5px;
}

/* ===== 6. Section 通用头部 ===== */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-12);
}

.section-label {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(0, 82, 204, 0.08);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: clamp(var(--text-2xl), 3.5vw, var(--text-4xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.section-footer {
  text-align: center;
  margin-top: var(--space-12);
}

/* ===== 7. Logo ===== */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo img {
    width: 169px;
    height: auto;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.logo-name {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.logo-tagline {
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
  margin-top: 2px;
}

/* ===== 8. 顶部公告条 ===== */
.top-bar {
  background: var(--gradient-primary);
  height: var(--top-bar-height);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.top-bar__text {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255,255,255,0.92);
  font-size: var(--text-sm);
  font-weight: 500;
}

.icon-inline {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.top-bar__right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.top-bar__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  color: rgba(255,255,255,0.85);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}
.top-bar__link svg { width: 13px; height: 13px; }
.top-bar__link:hover { color: white; }

/* ===== 9. 主导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.10);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--space-6);
}

/* 桌面导航 */
.main-nav { flex: 1; display: flex; justify-content: center; }

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: var(--color-bg-hover);
}

.nav-link .chevron {
  width: 10px;
  height: 6px;
  transition: transform var(--transition-base);
}

.has-dropdown { position: relative; }

.has-dropdown:hover .chevron {
  transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 200px;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: all var(--transition-base);
  z-index: 100;
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 9px 20px;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.dropdown-link:hover {
  background: var(--color-bg-hover);
  color: var(--color-primary);
  padding-left: 24px;
}

.nav-cta { flex-shrink: 0; }

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 8px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
  flex-shrink: 0;
}
.hamburger:hover { background: var(--color-gray-100); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* 汉堡动画 */
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端导航菜单 */
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-lg);
  z-index: 999;
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-slow);
}

.mobile-nav.open {
  max-height: 900px;
}

.mobile-nav-list {
  padding: var(--space-4) var(--container-pad) var(--space-6);
}

.mobile-nav-link {
  display: block;
  padding: 12px 0;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-light);
  transition: color var(--transition-fast);
}
.mobile-nav-link:hover { color: var(--color-primary); }

/* 移动端子导航容器 */
.mobile-nav-parent {
  border-bottom: 1px solid var(--color-border-light);
}

/* 子导航开关按钮 */
.mobile-nav-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 12px 0;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-primary);
  background: none;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  transition: color var(--transition-fast);
}

.mobile-nav-toggle:hover,
.mobile-nav-toggle[aria-expanded="true"] {
  color: var(--color-primary);
}

/* caret 箭头动画 */
.mobile-nav-caret {
  width: 10px;
  height: 6px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.mobile-nav-toggle[aria-expanded="true"] .mobile-nav-caret {
  transform: rotate(180deg);
}

/* 子导航列表 */
.mobile-subnav {
  list-style: none;
  padding: 0 0 8px 16px;
  margin: 0;
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-slow), opacity .25s ease, padding .3s ease;
  opacity: 0;
}

.mobile-subnav.open {
  max-height: 320px;
  opacity: 1;
  padding-bottom: 12px;
}

/* 子导航链接 */
.mobile-subnav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 0;
  font-size: .9rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), padding var(--transition-fast);
}

.mobile-subnav-link:hover,
.mobile-subnav-link:focus-visible {
  color: var(--color-primary);
  padding-left: 6px;
}

.mobile-subnav-link .badge-hot {
  font-size: .6rem;
  padding: 1px 5px;
}

.mobile-nav-cta {
  margin-top: var(--space-5);
  border-bottom: none;
}
.mobile-nav-cta .btn { width: 100%; justify-content: center; }

/* ===== 10. Hero 轮播 ===== */
.hero-section {
  position: relative;
  overflow: hidden;
}

.carousel {
  position: relative;
  height: clamp(480px, 65vh, 720px);
  overflow: hidden;
}

.carousel-track {
  display: flex;
  height: 100%;
  transition: transform 700ms cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-slide {
  position: relative;
  min-width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* 幻灯片背景 */
.slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  transition: transform 8s ease-out;
}
.carousel-slide.active .slide-bg { transform: scale(1); }

/*.slide-bg--1 { background: var(--gradient-hero-1); }*/
/*.slide-bg--2 { background: var(--gradient-hero-2); }*/
/*.slide-bg--3 { background: var(--gradient-hero-3); }*/
.slide-bg--1 { background: url(/static/upload/image/20260313/1773387448914049.jpg); }

.slide-bg--2 { background: url(/static/images/6a16fa26d8e1a.png); }
.slide-bg--3 { background: url(/static/images/6a16fb0d54579.png); }

.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.45) 0%,
    rgba(0, 0, 0, 0.15) 60%,
    transparent 100%
  );
}

.slide-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.slide-badge {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: rgba(255,255,255,0.92);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.25);
  margin-bottom: var(--space-5);
  letter-spacing: 0.5px;
}

.slide-title {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-6xl));
  font-weight: 800;
  color: var(--color-white);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-5);
  letter-spacing: -0.03em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.slide-title .highlight {
  background: linear-gradient(90deg, #00C6FF, #A0E6FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.slide-desc {
  font-size: clamp(var(--text-base), 2vw, var(--text-lg));
  color: rgba(255,255,255,0.88);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}

.slide-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}

.slide-stats {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.stat-item strong {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-white);
}
.stat-item span {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.3px;
}

.slide-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.tag {
  padding: 5px 12px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.9);
  font-size: var(--text-sm);
  border-radius: var(--radius-full);
}

/* 动画进场 */
.animate-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.carousel-slide.active .animate-in {
  opacity: 1;
  transform: translateY(0);
}
.carousel-slide.active .animate-in:nth-child(1) { transition-delay: 0.1s; }
.carousel-slide.active .animate-in:nth-child(2) { transition-delay: 0.2s; }
.carousel-slide.active .animate-in:nth-child(3) { transition-delay: 0.3s; }
.carousel-slide.active .animate-in:nth-child(4) { transition-delay: 0.4s; }
.carousel-slide.active .animate-in:nth-child(5) { transition-delay: 0.5s; }

/* 轮播按钮 */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 50%;
  color: white;
  z-index: 3;
  transition: all var(--transition-base);
}
.carousel-btn svg { width: 20px; height: 20px; }
.carousel-btn:hover {
  background: rgba(255,255,255,0.3);
  transform: translateY(-50%) scale(1.08);
}
.carousel-btn--prev { left: clamp(12px, 3vw, 40px); }
.carousel-btn--next { right: clamp(12px, 3vw, 40px); }

/* 轮播指示点 */
.carousel-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-2);
  z-index: 3;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.4);
  transition: all var(--transition-base);
}
.dot.active {
  width: 28px;
  background: var(--color-white);
}
.dot:hover { background: rgba(255,255,255,0.75); }

/* ===== 11. 数据荣誉带 ===== */
.trust-bar {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border-light);
  padding: var(--space-6) 0;
  box-shadow: 0 2px 12px rgba(0, 82, 204, 0.06);
}

.trust-bar__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-3) var(--space-8);
  flex: 1;
  min-width: 100px;
  text-align: center;
}

.trust-num {
  font-size: var(--text-3xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.trust-unit {
  font-size: var(--text-xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.trust-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
  margin-top: 2px;
}

.trust-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border-light);
  flex-shrink: 0;
}

/* ===== 12. 服务卡片 ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-card {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
  transform-origin: left;
}

.service-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.service-card:hover::before { transform: scaleX(1); }

.service-card--featured {
  border-color: rgba(0, 82, 204, 0.25);
  background: linear-gradient(135deg, #F0F5FF 0%, #FFFFFF 60%);
  box-shadow: 0 4px 20px rgba(0, 82, 204, 0.12);
}

.service-card--featured::before { transform: scaleX(1); }

.service-card__badge {
  position: absolute;
  top: 20px; right: 20px;
  padding: 4px 10px;
  background: var(--gradient-primary);
  color: white;
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--radius-full);
  letter-spacing: 0.3px;
}

.service-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.service-card__icon svg { width: 36px; height: 36px; }

.service-card__icon--blue    { background: #EBF2FF; }
.service-card__icon--gradient { background: linear-gradient(135deg, #EBF2FF, #E0F7FF); }
.service-card__icon--green   { background: #E3FCEF; }
.service-card__icon--orange  { background: #FFF0E6; }
.service-card__icon--red     { background: #FFEBE6; }
.service-card__icon--purple  { background: #EAE6FF; }

.service-card__body { flex: 1; }

.service-card__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.service-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.service-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.service-card__features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.service-card__features li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
}

.service-card__cta {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: gap var(--transition-fast);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border-light);
}
.service-card__cta:hover { gap: var(--space-2); }

/* ===== 13. 核心优势 ===== */
.advantages-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.adv-visual-card {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  border: 1px solid var(--color-border-light);
}

.adv-metric {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  width: 100%;
  text-align: center;
}

.adv-metric-num {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.adv-metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.advantages-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.adv-item {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding: var(--space-6);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}

.adv-item:hover {
  border-color: rgba(0, 82, 204, 0.2);
  box-shadow: var(--shadow-card);
  transform: translateX(4px);
}

.adv-item__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.adv-item__icon svg { width: 28px; height: 28px; }

.adv-icon--blue     { background: #EBF2FF; }
.adv-icon--gradient { background: linear-gradient(135deg, #EBF2FF, #E0F7FF); }
.adv-icon--green    { background: #E3FCEF; }
.adv-icon--orange   { background: #FFF0E6; }

.adv-item__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.adv-item__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ===== 14. 成功案例 ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.case-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
}

.case-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--color-primary-light);
}

.case-card__header {
  padding: var(--space-6) var(--space-6) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.case-card__header--travel   { background: linear-gradient(135deg, #1e3c72, #2a5298); }
.case-card__header--beauty   { background: linear-gradient(135deg, #0052CC, #00C6FF); }
.case-card__header--food     { background: linear-gradient(135deg, #c0392b, #e74c3c); }
.case-card__header--ecom     { background: linear-gradient(135deg, #e65c00, #f9d423); }
.case-card__header--cosmetic { background: linear-gradient(135deg, #8E2DE2, #4A00E0); }
.case-card__header--estate   { background: linear-gradient(135deg, #005C3A, #00A76F); }

.case-tag {
  padding: 4px 10px;
  background: rgba(255,255,255,0.2);
  color: white;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.3px;
}

.case-service {
  padding: 4px 10px;
  background: rgba(0,0,0,0.2);
  color: rgba(255,255,255,0.9);
  font-size: var(--text-xs);
  border-radius: var(--radius-full);
}

.case-card__body {
  padding: var(--space-6);
}

.case-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}

.case-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-5);
}

.case-result {
  display: flex;
  gap: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}

.case-metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.case-metric strong {
  font-size: var(--text-2xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.case-metric span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ===== 15. 服务流程 ===== */
.process-steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: start;
  gap: 0;
}

.process-step {
  text-align: center;
  padding: var(--space-6);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
}

.process-step:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.process-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-2);
  margin-top: 60px;
}

.process-connector::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  position: relative;
}

.process-step__num {
  font-size: var(--text-sm);
  font-weight: 800;
  color: var(--color-primary-light);
  letter-spacing: 1px;
  margin-bottom: var(--space-3);
}

.process-step__icon {
  width: 56px;
  height: 56px;
  background: var(--color-bg-section);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}
.process-step__icon svg { width: 32px; height: 32px; }

.process-step__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.process-step__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ===== 16. 客户证言 ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.testimonial-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(0, 82, 204, 0.2);
}

.testimonial-stars {
  color: #F6A623;
  font-size: var(--text-lg);
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  flex: 1;
  font-style: italic;
}

.testimonial-text::before { content: '\201C'; }
.testimonial-text::after  { content: '\201D'; }

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);

  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-lg);
  font-weight: 700;
  flex-shrink: 0;
}
.testimonial-avatar img {
    border-radius: 50%;
}
.testimonial-name {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text-primary);
  font-style: normal;
  display: block;
}

.testimonial-role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ===== 17. 合作伙伴标签云 ===== */
.partners-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-bottom: var(--space-6);
  align-items:center;
}

.partner-tag {
  padding: 10px 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  cursor: default;
}

.partner-tag:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.partners-note {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ===== 18. 联系区域 ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-info .section-label { margin-bottom: var(--space-4); }

.contact-info .section-title {
  text-align: left;
  margin-bottom: var(--space-5);
}

.contact-desc {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact-detail-icon {
  width: 40px;
  height: 40px;
  background: var(--color-bg-section);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-detail-icon svg { width: 20px; height: 20px; }

.contact-detail-item div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-detail-item strong {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-primary);
}

.contact-detail-item span,
.contact-detail-item small {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.contact-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--text-base);
  transition: color var(--transition-fast);
}
.contact-link:hover { color: var(--color-primary-dark); }

/* ===== 联系表单 ===== */
.contact-form-wrap {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-xl);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.required { color: var(--color-danger); }

.form-input,
.form-textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.12);
  outline: none;
}

.form-input.error,
.form-textarea.error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(222, 53, 11, 0.10);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-gray-400);
}

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

.form-error {
  font-size: var(--text-xs);
  color: var(--color-danger);
  min-height: 16px;
}

.form-checkboxes {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-4);
  padding: var(--space-3) 0;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  user-select: none;
}

.checkbox-item input {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.checkbox-item span {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.checkbox-item:hover span { color: var(--color-primary); }

.btn-loading {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.btn.loading .btn-text { display: none; }
.btn.loading .btn-loading { display: block; }
.btn.loading { pointer-events: none; opacity: 0.8; }

.form-privacy {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--space-1);
}

.form-link { color: var(--color-primary); }
.form-link:hover { text-decoration: underline; }

/* ===== 19. 页脚 ===== */
.site-footer {
  background: var(--color-gray-900);
  color: rgba(255,255,255,0.85);
}

.footer-main { padding: var(--space-16) 0; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: var(--space-10);
  align-items: start;
}

.footer-logo .logo-name { color: var(--color-white); }
.footer-logo .logo-tagline { color: rgba(255,255,255,0.5); }

.footer-brand-desc {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  line-height: var(--leading-relaxed);
  margin: var(--space-5) 0;
}

.footer-tel {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-white);
  transition: color var(--transition-fast);
}
.footer-tel:hover { color: var(--color-accent); }

.footer-tel-note {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
  margin-top: 2px;
  display: block;
}

.footer-nav-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: var(--space-5);
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-nav-list a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  transition: color var(--transition-fast);
}
.footer-nav-list a:hover { color: var(--color-white); }

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.footer-contact-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
}

.footer-contact-list a {
  color: rgba(255,255,255,0.7);
  transition: color var(--transition-fast);
}
.footer-contact-list a:hover { color: var(--color-white); }

.footer-qr { margin-top: var(--space-5); }

.qr-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.qr-placeholder span {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
}

/* 页脚底部 */
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--space-5) 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer-copyright {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.4);
}

.footer-legal-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer-legal-link {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.4);
  transition: color var(--transition-fast);
}
.footer-legal-link:hover { color: rgba(255,255,255,0.8); }

.footer-icp {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.3);
}

/* ===== 20. 回到顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(0, 82, 204, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--transition-base);
}

.back-to-top svg { width: 20px; height: 20px; }

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 8px 24px rgba(0, 82, 204, 0.5);
  transform: translateY(-2px);
}

/* ===== 21. 动画 ===== */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes countUp {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* 滚动动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== 22. 响应式布局 ===== */

/* 大屏 (≥1200px) 已是默认样式 */

/* 中等屏幕 (768px - 1199px) */
@media (max-width: 1199px) {
  :root {
    --section-pad-y: 64px;
    --container-pad: 20px;
  }

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

  .advantages-layout { gap: var(--space-10); }

  .process-steps {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  .process-connector { display: none; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .footer-brand { grid-column: span 2; }
}

/* 平板 (600px - 767px) */
@media (max-width: 767px) {
  :root {
    --section-pad-y: 56px;
    --container-pad: 16px;
    --header-height: 60px;
    --top-bar-height: 32px;
  }

  /* 导航 */
  .main-nav,
  .nav-cta { display: none; }

  .hamburger { display: flex; }
  .mobile-nav { display: block; }

  .top-bar__right { display: none; }

  /* Hero */
  .carousel { height: clamp(420px, 70vw, 560px); }

  .slide-title { font-size: clamp(var(--text-2xl), 7vw, var(--text-4xl)); }
  .slide-desc  { font-size: var(--text-sm); }

  .slide-actions { gap: var(--space-3); }
  .slide-actions .btn-lg { padding: 12px 22px; font-size: var(--text-base); }

  .slide-stats {
    gap: var(--space-5);
    flex-wrap: wrap;
  }

  /* 数据带 */
  .trust-bar__inner { gap: 0; }
  .trust-item { padding: var(--space-3) var(--space-4); }
  .trust-divider { height: 30px; }
  .trust-num { font-size: var(--text-2xl); }

  /* 服务 */
  .services-grid { grid-template-columns: 1fr; gap: var(--space-5); }

  /* 优势 */
  .advantages-layout { grid-template-columns: 1fr; gap: var(--space-8); }
  .adv-visual-card { padding: var(--space-6); }

  /* 案例 */
  .cases-grid { grid-template-columns: 1fr; gap: var(--space-5); }

  /* 证言 */
  .testimonials-grid { grid-template-columns: 1fr; gap: var(--space-5); }

  /* 联系 */
  .contact-layout { grid-template-columns: 1fr; gap: var(--space-8); }
  .contact-form-wrap { padding: var(--space-6); }
  .form-row { grid-template-columns: 1fr; }

  /* 页脚 */
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }
  .footer-bottom-inner { flex-direction: column; align-items: flex-start; gap: var(--space-2); }

  /* 回到顶部 */
  .back-to-top { bottom: 16px; right: 16px; width: 40px; height: 40px; }

  /* Section title */
  .section-title { font-size: var(--text-2xl); }
  .section-desc  { font-size: var(--text-base); }
}

/* 手机 (≤480px) */
@media (max-width: 480px) {
  :root {
    --section-pad-y: 48px;
    --container-pad: 14px;
  }

  .carousel { height: 88vw; min-height: 380px; max-height: 560px; }

  .slide-content { max-width: 100%; }
  .slide-title { font-size: clamp(22px, 7.5vw, 36px); }

  .carousel-btn { width: 36px; height: 36px; }
  .carousel-btn--prev { left: 8px; }
  .carousel-btn--next { right: 8px; }

  .trust-bar__inner { flex-direction: row; justify-content: space-around; }
  .trust-divider { display: none; }
  .trust-item { flex: none; width: calc(50% - 8px); }

  .adv-metric { grid-template-columns: 1fr; gap: var(--space-3); }

  .service-card { padding: var(--space-6); }
  .contact-form-wrap { padding: var(--space-5); }

  .footer-main { padding: var(--space-10) 0; }
  .footer-grid { gap: var(--space-6); }
  .footer-nav { display: none; }
  .footer-contact { display: none; }

  .slide-stats { display: none; }
}

/* ===== 23. 无障碍：减少动画 ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ===== 24. 打印样式 ===== */
@media print {
  .site-header,
  .top-bar,
  .hero-section,
  .back-to-top,
  .hamburger { display: none !important; }

  body { font-size: 12pt; color: black; }
  a { color: inherit; }
}

/* ====================================================
   资讯列表区域 (.news-section)
   ==================================================== */

.news-section {
  background: var(--color-bg-soft);
}

/* 三列网格 */
.news-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
}

/* 单列容器 */
.news-col {
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.news-col:hover {
  box-shadow: 0 8px 28px rgba(0,82,204,.10);
}

/* 特色列（GEO）加蓝色顶部边框 */
.news-col--featured {
  border-top: 3px solid var(--color-primary);
}

/* 列头部 */
.news-col__header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--color-border);
  background: #fafbff;
}

.news-col__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  flex-shrink: 0;
}

.news-col__icon--blue {
  background: #e8f0fe;
  color: var(--color-primary);
}

.news-col__icon--gradient {
  background: linear-gradient(135deg, #e8f0fe 0%, #e0f7ff 100%);
  color: var(--color-primary);
}

.news-col__icon--purple {
  background: #f0eeff;
  color: #6554C0;
}

.news-col__title {
  flex: 1;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.news-col__more {
  font-size: .8rem;
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
  font-weight: 500;
  opacity: .8;
  transition: opacity var(--transition-fast);
}

.news-col__more:hover {
  opacity: 1;
  text-decoration: underline;
}

/* 文章列表 */
.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.news-item {
  border-bottom: 1px solid #f0f2f5;
}

.news-item:last-child {
  border-bottom: none;
}

.news-item--top .news-item__link {
  background: #fafcff;
}

.news-item__link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 13px 20px;
  text-decoration: none;
  transition: background var(--transition-fast);
  position: relative;
}

.news-item__link:hover {
  background: #f5f8ff;
}

.news-item__link:hover .news-item__title {
  color: var(--color-primary);
}

.news-item__tag {
  display: inline-block;
  font-size: .68rem;
  font-weight: 600;
  color: var(--color-primary);
  background: #e8f0fe;
  border-radius: 3px;
  padding: 1px 7px;
  width: fit-content;
  letter-spacing: .02em;
}

.news-item__tag--hot {
  background: linear-gradient(90deg, #0052CC, #00C6FF);
  color: #fff;
}

.news-item__title {
  font-size: .9rem;
  color: var(--color-text-primary);
  font-weight: 500;
  line-height: 1.5;
  transition: color var(--transition-fast);
  /* 超长标题省略 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item__date {
  font-size: .75rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ===== 响应式 ===== */

/* 平板：2列 */
@media (max-width: 900px) {
  .news-columns {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 第三列（智慧新闻中心）独占一行 */
  .news-col:nth-child(3) {
    grid-column: 1 / -1;
  }
}

/* 手机：1列 */
@media (max-width: 600px) {
  .news-columns {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .news-col:nth-child(3) {
    grid-column: auto;
  }

  .news-col__header {
    padding: 14px 16px 12px;
  }

  .news-item__link {
    padding: 11px 16px;
  }
}


/*合作品牌 自定义*/
.partners-tags>span>img {
    width: 100px;
    height: auto;
  
}