/* ============================================
   汉驰科技官网 v6 - 精品优化版
   ============================================ */

/* ---- CSS Variables ---- */
:root {
  --primary: #1677FF;
  --primary-dark: #0F5FCC;
  --primary-light: #4096FF;
  --accent: #00D4FF;
  --dark-navy: #0A1628;
  --dark-blue: #0F234A;
  --text-primary: #1A1A2E;
  --text-secondary: #4A5568;
  --text-light: #718096;
  --bg-white: #FFFFFF;
  --bg-gray: #F5F7FA;
  --border: #E2E8F0;
  --border-light: #EDF2F7;
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --shadow-blue: 0 4px 20px rgba(22,119,255,0.22);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: 0.22s ease;
  --font-cn: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-en: 'Inter', sans-serif;
  --nav-height: 64px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-cn); color: var(--text-primary); background: var(--bg-white); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---- Container ---- */
.container { max-width: 1240px; margin: 0 auto; padding: 0 40px; }

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-height);
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }

.nav-container {
  max-width: 1240px; margin: 0 auto; padding: 0 40px;
  height: 100%; display: flex; align-items: center;
}

/* Logo */
.nav-logo { display: flex; align-items: center; flex-shrink: 0; margin-right: 36px; }
.nav-logo-img { height: 36px; width: auto; object-fit: contain; }

/* Nav Links */
.nav-links { display: flex; align-items: center; gap: 2px; flex: 1; }
.nav-item { position: relative; }
.nav-link {
  display: flex; align-items: center; gap: 3px;
  padding: 8px 12px; font-size: 14px; font-weight: 500;
  color: var(--text-primary); border-radius: var(--radius-sm);
  transition: all var(--transition); white-space: nowrap;
}
.nav-link:hover { color: var(--primary); background: rgba(22,119,255,0.06); }
.nav-arrow { transition: transform var(--transition); flex-shrink: 0; opacity: 0.5; }
.nav-item:hover .nav-arrow { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute; top: calc(100% + 6px); left: 0;
  background: white; border: 1px solid var(--border);
  border-radius: var(--radius-md); box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: all var(--transition); min-width: 180px; z-index: 100;
}
.nav-dropdown-wide { min-width: 480px; }
.nav-item:hover .nav-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }

.dropdown-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; padding: 8px; }
.dropdown-item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 10px 12px; border-radius: var(--radius-sm); transition: background var(--transition);
}
.dropdown-item:hover { background: var(--bg-gray); }
.dropdown-icon {
  width: 32px; height: 32px; background: rgba(22,119,255,0.08);
  border-radius: var(--radius-sm); display: flex; align-items: center;
  justify-content: center; color: var(--primary); flex-shrink: 0;
}
.dropdown-title { font-size: 13px; font-weight: 600; color: var(--text-primary); margin-bottom: 2px; }
.dropdown-desc { font-size: 11px; color: var(--text-light); }

.dropdown-list { padding: 8px; }
.dropdown-item-simple {
  display: block; padding: 9px 14px; font-size: 13px;
  color: var(--text-secondary); border-radius: var(--radius-sm); transition: all var(--transition);
}
.dropdown-item-simple:hover { background: var(--bg-gray); color: var(--primary); }

/* Nav Actions */
.nav-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; flex-shrink: 0; }

/* Language Switcher */
.lang-switcher { display: flex; align-items: center; gap: 2px; }
.lang-btn {
  padding: 4px 8px; font-size: 12px; font-weight: 500;
  color: var(--text-secondary); border-radius: 4px;
  transition: all var(--transition); font-family: var(--font-en);
}
.lang-btn:hover { color: var(--primary); background: rgba(22,119,255,0.06); }
.lang-btn.active { color: var(--primary); font-weight: 700; }
.lang-sep { color: var(--border); font-size: 12px; }

.nav-contact-btn {
  padding: 7px 18px; background: var(--primary); color: white;
  border-radius: var(--radius-sm); font-size: 13px; font-weight: 500;
  transition: all var(--transition); white-space: nowrap;
}
.nav-contact-btn:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-blue); }

/* Mobile Toggle */
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 6px; border-radius: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all var(--transition); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative; height: 100vh; min-height: 680px;
  display: flex; align-items: center; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg-img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(110deg, rgba(10,22,40,0.90) 0%, rgba(10,22,40,0.70) 45%, rgba(10,22,40,0.25) 100%);
}

.hero-container {
  position: relative; z-index: 1;
  max-width: 1240px; margin: 0 auto; padding: 0 40px;
  width: 100%; padding-top: var(--nav-height);
  display: flex; flex-direction: column; justify-content: center;
  height: 100%; gap: 48px;
}

.hero-content { max-width: 620px; }
.hero-badge {
  display: inline-block; padding: 5px 14px;
  background: rgba(22,119,255,0.18); border: 1px solid rgba(22,119,255,0.35);
  border-radius: 100px; font-size: 11px; font-weight: 500;
  color: rgba(255,255,255,0.85); letter-spacing: 0.06em;
  font-family: var(--font-en); margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(36px, 5vw, 58px); font-weight: 700;
  line-height: 1.18; color: white; margin-bottom: 18px;
  letter-spacing: -0.01em;
}
.hero-title-line1, .hero-title-line2 { display: block; }
.hero-title-line2 { color: var(--accent); }

.hero-subtitle {
  font-size: 16px; color: rgba(255,255,255,0.72);
  line-height: 1.7; margin-bottom: 32px; max-width: 520px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-btn-primary {
  padding: 13px 30px; background: var(--primary); color: white;
  border-radius: var(--radius-sm); font-size: 15px; font-weight: 600;
  transition: all var(--transition);
}
.hero-btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(22,119,255,0.4); }
.hero-btn-secondary {
  padding: 13px 30px; background: rgba(255,255,255,0.10); color: white;
  border: 1px solid rgba(255,255,255,0.28); border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 500; backdrop-filter: blur(8px); transition: all var(--transition);
}
.hero-btn-secondary:hover { background: rgba(255,255,255,0.20); transform: translateY(-2px); }

/* Hero Stats */
.hero-stats {
  display: flex; align-items: center;
  background: rgba(255,255,255,0.07); backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.10); border-radius: var(--radius-md);
  padding: 18px 28px; width: fit-content; gap: 0;
}
.hero-stat { padding: 0 24px; text-align: center; }
.hero-stat:first-child { padding-left: 0; }
.hero-stat:last-child { padding-right: 0; }
.hero-stat-value { font-size: 26px; font-weight: 700; color: white; font-family: var(--font-en); line-height: 1; margin-bottom: 4px; }
.hero-stat-label { font-size: 11px; color: rgba(255,255,255,0.60); white-space: nowrap; }
.hero-stat-divider { width: 1px; height: 36px; background: rgba(255,255,255,0.12); flex-shrink: 0; }

/* Scroll Indicator */
.hero-scroll-indicator {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px; z-index: 1;
}
.scroll-line {
  width: 1px; height: 36px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 1; } }
.hero-scroll-indicator span { font-size: 10px; color: rgba(255,255,255,0.45); letter-spacing: 0.1em; font-family: var(--font-en); }

/* ============================================
   SECTION BASE
   ============================================ */
.section { padding: 88px 0; }
.section-white { background: var(--bg-white); }
.section-gray { background: var(--bg-gray); }
.section-dark-blue { background: var(--dark-navy); }

.section-header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block; font-size: 11px; font-weight: 600;
  letter-spacing: 0.14em; color: var(--primary); font-family: var(--font-en);
  margin-bottom: 10px; text-transform: uppercase;
}
.section-tag-light { color: rgba(255,255,255,0.55); }
.section-title { font-size: clamp(24px, 3.2vw, 36px); font-weight: 700; color: var(--text-primary); line-height: 1.25; margin-bottom: 14px; letter-spacing: -0.01em; }
.section-title-light { color: white; }
.section-desc { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }
.section-desc-light { color: rgba(255,255,255,0.60); }

/* ============================================
   ABOUT — 修复左图与右侧4卡片对齐
   关键：align-items: stretch + 图片高度100%
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: stretch;   /* ← 关键：两列等高 */
  margin-bottom: 48px;
}

/* 左侧图片列：撑满整个高度 */
.about-visual {
  display: flex;
  flex-direction: column;
}
.about-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  flex: 1;               /* ← 撑满父容器高度 */
  min-height: 360px;
}
.about-img {
  width: 100%;
  height: 100%;          /* ← 填满包裹容器 */
  object-fit: cover;
  transition: transform 0.5s ease;
  display: block;
}
.about-img-wrap:hover .about-img { transform: scale(1.03); }
.about-img-badge {
  position: absolute; bottom: 16px; left: 16px;
  display: flex; align-items: center; gap: 6px;
  background: rgba(22,119,255,0.88); backdrop-filter: blur(8px);
  color: white; padding: 6px 14px; border-radius: 100px; font-size: 12px; font-weight: 600;
}

/* 右侧内容列：4卡片均匀分布 */
.about-content {
  display: flex;
  flex-direction: column;
}
.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;  /* ← 两行等高 */
  gap: 14px;
  flex: 1;
}
.about-card {
  display: flex; gap: 12px; padding: 20px;
  background: var(--bg-gray); border: 1px solid var(--border-light);
  border-radius: var(--radius-md); transition: all var(--transition);
  align-items: flex-start;
}
.about-card:hover { border-color: var(--primary); box-shadow: var(--shadow-blue); transform: translateY(-2px); background: white; }
.about-card-icon {
  width: 44px; height: 44px; background: rgba(22,119,255,0.08);
  border-radius: var(--radius-sm); display: flex; align-items: center;
  justify-content: center; color: var(--primary); flex-shrink: 0;
}
.about-card-body h4 { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.about-card-body p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* About Metrics */
.about-metrics { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.metric-card { padding: 28px 20px; text-align: center; border-right: 1px solid var(--border); transition: background var(--transition); }
.metric-card:last-child { border-right: none; }
.metric-card:hover { background: rgba(22,119,255,0.03); }
.metric-num { font-size: 36px; font-weight: 700; color: var(--primary); font-family: var(--font-en); line-height: 1; margin-bottom: 6px; }
.metric-text { font-size: 13px; color: var(--text-secondary); }

/* ============================================
   SOLUTIONS TABS
   ============================================ */
.tab-nav {
  display: flex; border-bottom: 2px solid var(--border);
  margin-bottom: 36px; overflow-x: auto; scrollbar-width: none;
}
.tab-nav::-webkit-scrollbar { display: none; }
.tab-btn {
  padding: 12px 22px; font-size: 14px; font-weight: 500;
  color: var(--text-secondary); border-bottom: 2px solid transparent;
  margin-bottom: -2px; white-space: nowrap; transition: all var(--transition);
  font-family: var(--font-cn);
}
.tab-btn:hover { color: var(--primary); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

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

/* 解决方案面板：图片与内容对齐 */
.solution-panel {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 52px;
  align-items: stretch;  /* ← 两列等高 */
}
.solution-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  min-height: 360px;
}
.solution-img {
  width: 100%; height: 100%;
  object-fit: cover; transition: transform 0.5s ease;
  display: block;
}
.solution-visual:hover .solution-img { transform: scale(1.03); }

.solution-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.solution-tag { font-size: 11px; font-weight: 600; letter-spacing: 0.14em; color: var(--primary); font-family: var(--font-en); margin-bottom: 10px; }
.solution-title { font-size: 26px; font-weight: 700; color: var(--text-primary); margin-bottom: 14px; line-height: 1.3; }
.solution-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 24px; }
.solution-features { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }
.solution-feature { display: flex; gap: 12px; align-items: flex-start; }
.feature-dot { width: 7px; height: 7px; background: var(--primary); border-radius: 50%; flex-shrink: 0; margin-top: 7px; }
.solution-feature strong { display: block; font-size: 13px; font-weight: 600; color: var(--text-primary); margin-bottom: 3px; }
.solution-feature p { font-size: 12px; color: var(--text-secondary); line-height: 1.6; }
.solution-cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 11px 26px; background: var(--primary); color: white;
  border-radius: var(--radius-sm); font-size: 14px; font-weight: 600;
  transition: all var(--transition); align-self: flex-start;
}
.solution-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-blue); }

/* ============================================
   MARKET (Dark)
   ============================================ */
.market-compare {
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: 20px; align-items: stretch; margin-bottom: 52px;
}
.market-card {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg); padding: 28px;
  display: flex; flex-direction: column;
}
.market-card-top { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.market-card-top h3 { font-size: 17px; font-weight: 600; color: white; }
.market-icon-wrap { width: 44px; height: 44px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.market-icon-red { background: rgba(239,68,68,0.15); color: #F87171; }
.market-icon-blue { background: rgba(22,119,255,0.20); color: var(--accent); }
.market-list { display: flex; flex-direction: column; gap: 14px; flex: 1; }
.market-list li { display: flex; gap: 10px; align-items: flex-start; }
.market-list-icon {
  width: 20px; height: 20px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 700; flex-shrink: 0; margin-top: 2px;
}
.market-list-icon-red { background: rgba(239,68,68,0.15); color: #F87171; }
.market-list-icon-blue { background: rgba(22,119,255,0.20); color: var(--accent); }
.market-list span { font-size: 13px; color: rgba(255,255,255,0.72); line-height: 1.6; }

.market-arrow-wrap { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; padding: 0 8px; }
.market-arrow-circle { width: 52px; height: 52px; background: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 0 0 8px rgba(22,119,255,0.12); }
.market-arrow-label { font-size: 11px; font-weight: 600; color: rgba(255,255,255,0.45); letter-spacing: 0.06em; white-space: nowrap; }

.drivers-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.driver-card {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md); padding: 24px 20px; transition: all var(--transition);
}
.driver-card:hover { background: rgba(255,255,255,0.08); border-color: rgba(22,119,255,0.35); transform: translateY(-3px); }
.driver-icon { width: 48px; height: 48px; background: rgba(22,119,255,0.15); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--accent); margin-bottom: 14px; }
.driver-card h4 { font-size: 15px; font-weight: 600; color: white; margin-bottom: 8px; }
.driver-card p { font-size: 12px; color: rgba(255,255,255,0.55); line-height: 1.6; }

/* ============================================
   PARTNERS
   ============================================ */
.partners-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 48px; }
.partner-type-card {
  padding: 32px 24px; background: white; border: 1px solid var(--border);
  border-radius: var(--radius-lg); text-align: center; transition: all var(--transition);
  display: flex; flex-direction: column; align-items: center;
}
.partner-type-card:hover { border-color: var(--primary); box-shadow: var(--shadow-blue); transform: translateY(-4px); }
.partner-type-icon { width: 64px; height: 64px; background: rgba(22,119,255,0.08); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--primary); margin: 0 auto 18px; }
.partner-type-card h4 { font-size: 17px; font-weight: 600; color: var(--text-primary); margin-bottom: 10px; }
.partner-type-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 18px; flex: 1; }
.partner-link { font-size: 13px; font-weight: 600; color: var(--primary); }
.partner-link:hover { text-decoration: underline; }

/* Client Logos - 统一大小 */
.client-logos-section { margin-top: 8px; }
.client-logos-title {
  font-size: 15px; font-weight: 600; color: var(--text-secondary);
  text-align: center; margin-bottom: 24px; letter-spacing: 0.04em;
}
.client-logos-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: white;
}
.client-logo-item {
  display: flex; align-items: center; justify-content: center;
  padding: 20px 16px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
  height: 84px;
  background: white;
}
.client-logo-item:hover { background: var(--bg-gray); }
.client-logo-item:nth-child(6n) { border-right: none; }
.client-logo-item:nth-last-child(-n+6) { border-bottom: none; }
.client-logo-item img {
  max-width: 100%; max-height: 44px; width: auto; height: auto;
  object-fit: contain; filter: grayscale(30%);
  transition: filter var(--transition), transform var(--transition);
}
.client-logo-item:hover img { filter: grayscale(0%); transform: scale(1.05); }

/* ============================================
   NEWS - 统一三等分，高度一致
   ============================================ */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 36px; }
.news-card {
  background: white; border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; transition: all var(--transition);
  display: flex; flex-direction: column;
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--primary); }
.news-img-wrap { position: relative; overflow: hidden; flex-shrink: 0; }
.news-img { width: 100%; height: 200px; object-fit: cover; transition: transform 0.5s ease; display: block; }
.news-card:hover .news-img { transform: scale(1.05); }
.news-tag-badge { position: absolute; top: 12px; left: 12px; padding: 4px 10px; background: var(--primary); color: white; font-size: 11px; font-weight: 600; border-radius: 100px; }
.news-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.news-date { font-size: 12px; color: var(--text-light); margin-bottom: 8px; font-family: var(--font-en); }
.news-title {
  font-size: 15px; font-weight: 600; color: var(--text-primary); line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-excerpt {
  font-size: 13px; color: var(--text-secondary); line-height: 1.6; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 14px;
}
.news-read-more { font-size: 13px; font-weight: 600; color: var(--primary); margin-top: auto; }
.news-read-more:hover { text-decoration: underline; }

.section-more-btn-wrap { text-align: center; }
.section-more-btn {
  display: inline-block; padding: 11px 36px;
  border: 1.5px solid var(--primary); color: var(--primary);
  border-radius: var(--radius-sm); font-size: 14px; font-weight: 600; transition: all var(--transition);
}
.section-more-btn:hover { background: var(--primary); color: white; }

/* ============================================
   CASES
   ============================================ */
.cases-stats { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 40px; }
.case-stat { padding: 28px 20px; text-align: center; border-right: 1px solid var(--border); transition: background var(--transition); }
.case-stat:last-child { border-right: none; }
.case-stat:hover { background: rgba(22,119,255,0.03); }
.case-stat-num { font-size: 36px; font-weight: 700; color: var(--primary); font-family: var(--font-en); line-height: 1; margin-bottom: 5px; }
.case-stat-label { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 3px; }
.case-stat-sub { font-size: 12px; color: var(--text-light); }

.industries-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.industry-card { padding: 24px 20px; background: var(--bg-gray); border: 1px solid var(--border-light); border-radius: var(--radius-md); transition: all var(--transition); }
.industry-card:hover { background: white; border-color: var(--primary); box-shadow: var(--shadow-blue); transform: translateY(-3px); }
.industry-icon { width: 56px; height: 56px; background: rgba(22,119,255,0.08); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--primary); margin-bottom: 14px; }
.industry-card h4 { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 7px; }
.industry-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* ============================================
   SUPPORT
   ============================================ */
.support-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.support-card { padding: 28px 20px; background: white; border: 1px solid var(--border); border-radius: var(--radius-lg); transition: all var(--transition); display: flex; flex-direction: column; }
.support-card:hover { border-color: var(--primary); box-shadow: var(--shadow-blue); transform: translateY(-4px); }
.support-icon { width: 56px; height: 56px; background: rgba(22,119,255,0.08); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--primary); margin-bottom: 16px; }
.support-card h4 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 10px; }
.support-card > p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 14px; flex: 1; }
.support-list { display: flex; flex-direction: column; gap: 6px; }
.support-list li { font-size: 12px; color: var(--text-secondary); padding-left: 14px; position: relative; }
.support-list li::before { content: ''; position: absolute; left: 0; top: 7px; width: 5px; height: 5px; background: var(--primary); border-radius: 50%; }

/* ============================================
   CTA
   ============================================ */
.section-cta { position: relative; padding: 96px 0; overflow: hidden; }
.cta-bg { position: absolute; inset: 0; z-index: 0; }
.cta-bg-img { width: 100%; height: 100%; object-fit: cover; }
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(10,22,40,0.93) 0%, rgba(15,35,74,0.87) 100%); }
.cta-content { position: relative; z-index: 1; text-align: center; max-width: 600px; margin: 0 auto; }
.cta-title { font-size: clamp(26px, 3.5vw, 40px); font-weight: 700; color: white; margin-bottom: 14px; line-height: 1.3; }
.cta-desc { font-size: 15px; color: rgba(255,255,255,0.68); margin-bottom: 32px; line-height: 1.7; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-btn-primary { padding: 13px 34px; background: var(--primary); color: white; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600; transition: all var(--transition); }
.cta-btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(22,119,255,0.4); }
.cta-btn-secondary { padding: 13px 34px; background: rgba(255,255,255,0.10); color: white; border: 1px solid rgba(255,255,255,0.28); border-radius: var(--radius-sm); font-size: 15px; font-weight: 500; backdrop-filter: blur(8px); transition: all var(--transition); }
.cta-btn-secondary:hover { background: rgba(255,255,255,0.20); transform: translateY(-2px); }

/* ============================================
   FOOTER
   ============================================ */
.footer { background: var(--dark-navy); color: rgba(255,255,255,0.75); }
.footer-top { padding: 56px 0 44px; border-bottom: 1px solid rgba(255,255,255,0.07); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 44px; align-items: start; }

.footer-logo { margin-bottom: 14px; }
.footer-logo-img { height: 40px; width: auto; object-fit: contain; filter: brightness(0) invert(1); opacity: 0.85; }
.footer-brand-desc { font-size: 12px; color: rgba(255,255,255,0.45); line-height: 1.7; margin-bottom: 18px; }
.footer-social { display: flex; gap: 8px; }
.social-icon { width: 32px; height: 32px; background: rgba(255,255,255,0.07); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.55); transition: all var(--transition); }
.social-icon:hover { background: var(--primary); color: white; }

.footer-nav-title { font-size: 12px; font-weight: 600; color: white; margin-bottom: 14px; letter-spacing: 0.06em; text-transform: uppercase; }
.footer-nav-list { display: flex; flex-direction: column; gap: 9px; }
.footer-nav-list li a { font-size: 13px; color: rgba(255,255,255,0.45); transition: color var(--transition); }
.footer-nav-list li a:hover { color: white; }

.footer-contact-list { display: flex; flex-direction: column; gap: 10px; }
.footer-contact-item { display: flex; align-items: flex-start; gap: 8px; font-size: 12px; color: rgba(255,255,255,0.45); }
.footer-contact-item svg { flex-shrink: 0; margin-top: 2px; opacity: 0.6; }
.footer-contact-item a { color: rgba(255,255,255,0.45); transition: color var(--transition); }
.footer-contact-item a:hover { color: white; }

.footer-bottom { padding: 18px 0; }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,0.30); }
.footer-bottom-links { display: flex; gap: 18px; }
.footer-bottom-links a { font-size: 12px; color: rgba(255,255,255,0.30); transition: color var(--transition); }
.footer-bottom-links a:hover { color: rgba(255,255,255,0.65); }

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
  position: fixed; bottom: 28px; right: 28px;
  width: 40px; height: 40px; background: var(--primary); color: white;
  border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); opacity: 0; visibility: hidden;
  transform: translateY(10px); transition: all var(--transition); z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* ============================================
   REVEAL ANIMATIONS
   ============================================ */
.reveal, .reveal-left, .reveal-right, .reveal-hero, .reveal-hero-delay {
  opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-left { transform: translateX(-24px); }
.reveal-right { transform: translateX(24px); }
.reveal-hero { transform: translateY(16px); }
.reveal-hero-delay { transform: translateY(16px); transition-delay: 0.2s; }
.reveal.visible, .reveal-left.visible, .reveal-right.visible,
.reveal-hero.visible, .reveal-hero-delay.visible {
  opacity: 1; transform: translate(0);
}

/* ============================================
   RESPONSIVE - TABLET (≤1100px)
   ============================================ */
@media (max-width: 1100px) {
  .container, .nav-container { padding: 0 24px; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-img-wrap { min-height: 300px; }
  .support-grid { grid-template-columns: repeat(2, 1fr); }
  .drivers-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .client-logos-grid { grid-template-columns: repeat(4, 1fr); }
  .client-logo-item:nth-child(6n) { border-right: 1px solid var(--border); }
  .client-logo-item:nth-child(4n) { border-right: none; }
  .client-logo-item:nth-last-child(-n+6) { border-bottom: 1px solid var(--border); }
  .client-logo-item:nth-last-child(-n+4) { border-bottom: none; }
}

/* ============================================
   RESPONSIVE - MOBILE (≤900px)
   ============================================ */
@media (max-width: 900px) {
  /* Mobile Nav */
  .nav-links {
    display: none;
    position: fixed; top: var(--nav-height); left: 0; right: 0;
    height: calc(100vh - var(--nav-height));
    background: white; flex-direction: column; align-items: stretch;
    padding: 16px; overflow-y: auto; z-index: 999; gap: 2px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }

  /* Mobile dropdown */
  .nav-dropdown {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: none; background: var(--bg-gray);
    border-radius: var(--radius-sm); margin-top: 4px;
    display: none; overflow: hidden;
  }
  .nav-item.open .nav-dropdown { display: block; }
  .nav-dropdown-wide { min-width: unset; }
  .dropdown-grid { grid-template-columns: 1fr; min-width: unset; }

  .nav-link { padding: 12px 14px; font-size: 15px; border-radius: var(--radius-sm); }
  .nav-link:hover { background: var(--bg-gray); }

  /* Layout fixes */
  .solution-panel { grid-template-columns: 1fr; gap: 28px; }
  .solution-visual { min-height: 260px; }
  .market-compare { grid-template-columns: 1fr; gap: 16px; }
  .market-arrow-wrap { flex-direction: row; justify-content: center; }
  .market-arrow-circle { transform: rotate(90deg); }
  .news-grid { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: 1fr; }
  .about-metrics { grid-template-columns: repeat(2, 1fr); }
  .cases-stats { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .client-logos-grid { grid-template-columns: repeat(3, 1fr); }
  .client-logo-item:nth-child(6n) { border-right: 1px solid var(--border); }
  .client-logo-item:nth-child(3n) { border-right: none; }
  .client-logo-item:nth-last-child(-n+6) { border-bottom: 1px solid var(--border); }
  .client-logo-item:nth-last-child(-n+3) { border-bottom: none; }
  .hero-stats { flex-wrap: wrap; width: 100%; justify-content: center; padding: 14px 20px; }
  .hero-stat-divider { display: none; }
  .hero-stat { padding: 8px 16px; }
}

/* ============================================
   RESPONSIVE - SMALL MOBILE (≤640px)
   ============================================ */
@media (max-width: 640px) {
  .section { padding: 56px 0; }
  .container, .nav-container { padding: 0 16px; }
  .hero-container { padding: 0 16px; }
  .about-cards { grid-template-columns: 1fr; }
  .about-metrics { grid-template-columns: repeat(2, 1fr); }
  .metric-card { border-right: none; border-bottom: 1px solid var(--border); }
  .metric-card:nth-child(odd) { border-right: 1px solid var(--border); }
  .metric-card:last-child { border-bottom: none; }
  .support-grid { grid-template-columns: 1fr; }
  .drivers-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .cases-stats { grid-template-columns: repeat(2, 1fr); }
  .case-stat { border-right: none; border-bottom: 1px solid var(--border); }
  .case-stat:nth-child(odd) { border-right: 1px solid var(--border); }
  .case-stat:last-child { border-bottom: none; }
  .tab-btn { padding: 10px 14px; font-size: 13px; }
  .client-logos-grid { grid-template-columns: repeat(2, 1fr); }
  .client-logo-item { height: 64px; padding: 12px; }
  .client-logo-item:nth-child(3n) { border-right: 1px solid var(--border); }
  .client-logo-item:nth-child(2n) { border-right: none; }
  .client-logo-item:nth-last-child(-n+3) { border-bottom: 1px solid var(--border); }
  .client-logo-item:nth-last-child(-n+2) { border-bottom: none; }
  /* 手机端保留联系我们按鈕，但缩小尺寸 */
  .nav-contact-btn { display: flex; padding: 6px 12px; font-size: 12px; }
  .hero-title { font-size: 32px; }
  .solution-panel { gap: 20px; }
}

/* ============================================
   MODAL OVERLAY
   ============================================ */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(10,22,40,0.72); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0; visibility: hidden; transition: all 0.25s ease;
}
.modal-overlay.open { opacity: 1; visibility: visible; }

.modal-box {
  background: white; border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(0,0,0,0.18);
  width: 100%; max-width: 560px; max-height: 90vh;
  overflow-y: auto; position: relative;
  transform: translateY(16px); transition: transform 0.25s ease;
}
.modal-overlay.open .modal-box { transform: translateY(0); }
.modal-box-wide { max-width: 720px; }

.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--bg-gray); color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition); z-index: 1;
}
.modal-close:hover { background: var(--border); color: var(--text-primary); }

.modal-header {
  display: flex; align-items: center; gap: 14px;
  padding: 28px 28px 20px;
  border-bottom: 1px solid var(--border-light);
}
.modal-icon {
  width: 52px; height: 52px; background: rgba(22,119,255,0.08);
  border-radius: var(--radius-md); display: flex; align-items: center;
  justify-content: center; color: var(--primary); flex-shrink: 0;
}
.modal-title { font-size: 20px; font-weight: 700; color: var(--text-primary); margin-bottom: 3px; }
.modal-subtitle { font-size: 13px; color: var(--text-secondary); }

.modal-body { padding: 24px 28px 28px; }

/* Contact Info Grid */
.contact-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }
.contact-info-item { display: flex; gap: 12px; align-items: flex-start; padding: 14px; background: var(--bg-gray); border-radius: var(--radius-md); }
.contact-info-icon { width: 36px; height: 36px; background: rgba(22,119,255,0.10); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--primary); flex-shrink: 0; }
.contact-info-label { font-size: 11px; color: var(--text-light); margin-bottom: 3px; text-transform: uppercase; letter-spacing: 0.06em; }
.contact-info-value { font-size: 13px; color: var(--text-primary); font-weight: 500; }
.contact-info-value a { color: var(--primary); }
.contact-info-value a:hover { text-decoration: underline; }

/* Contact Form */
.contact-form { border-top: 1px solid var(--border-light); padding-top: 20px; }
.contact-form-title { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 14px; }
.contact-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.contact-input {
  width: 100%; padding: 10px 14px; font-size: 13px; font-family: var(--font-cn);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-primary); background: white;
  transition: border-color var(--transition); outline: none;
  margin-bottom: 12px;
}
.contact-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(22,119,255,0.08); }
.contact-input::placeholder { color: var(--text-light); }
.contact-textarea { height: 100px; resize: vertical; }
.contact-submit {
  width: 100%; padding: 12px; background: var(--primary); color: white;
  border-radius: var(--radius-sm); font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all var(--transition); font-family: var(--font-cn);
}
.contact-submit:hover { background: var(--primary-dark); }

/* News Modal */
.news-modal-content { padding: 28px; }
.news-modal-content img { width: 100%; border-radius: var(--radius-md); margin-bottom: 20px; }
.news-modal-content h2 { font-size: 20px; font-weight: 700; color: var(--text-primary); margin-bottom: 10px; line-height: 1.4; }
.news-modal-content .news-modal-date { font-size: 12px; color: var(--text-light); margin-bottom: 16px; }
.news-modal-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 12px; }
.news-modal-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; padding: 10px 22px; background: var(--primary); color: white; border-radius: var(--radius-sm); font-size: 13px; font-weight: 600; transition: all var(--transition); }
.news-modal-link:hover { background: var(--primary-dark); }

/* Simple modal body */
.simple-modal-body { padding: 24px 28px 28px; }
.simple-modal-body h4 { font-size: 15px; font-weight: 600; color: var(--text-primary); margin: 16px 0 8px; }
.simple-modal-body p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 8px; }
.simple-modal-body a { color: var(--primary); }
.simple-modal-body a:hover { text-decoration: underline; }

/* ============================================
   TOAST
   ============================================ */
.toast-msg {
  position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%) translateY(20px);
  padding: 12px 24px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 500;
  z-index: 3000; opacity: 0; transition: all 0.25s ease; white-space: nowrap;
  max-width: 90vw; text-align: center;
}
.toast-msg.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast-error { background: #FEF2F2; color: #DC2626; border: 1px solid #FECACA; }
.toast-success { background: #F0FDF4; color: #16A34A; border: 1px solid #BBF7D0; }
.toast-info { background: #EFF6FF; color: var(--primary); border: 1px solid #BFDBFE; }

/* ============================================
   MOBILE MODAL FIXES
   ============================================ */
@media (max-width: 640px) {
  .modal-box { max-width: 100%; border-radius: var(--radius-md); }
  .contact-info-grid { grid-template-columns: 1fr; }
  .contact-form-row { grid-template-columns: 1fr; }
  .modal-header { padding: 20px 20px 16px; }
  .modal-body { padding: 16px 20px 20px; }
  .simple-modal-body { padding: 16px 20px 20px; }
}

/* ============================================
   PHONE INPUT WITH COUNTRY CODE
   ============================================ */
.phone-input-wrap {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition);
  margin-bottom: 12px;
}
.phone-input-wrap:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22,119,255,0.08);
}
.phone-country-select {
  flex-shrink: 0;
  padding: 10px 10px 10px 12px;
  border: none;
  border-right: 1px solid var(--border);
  background: var(--bg-gray);
  font-size: 13px;
  font-family: var(--font-cn);
  color: var(--text-primary);
  cursor: pointer;
  outline: none;
  min-width: 130px;
  max-width: 160px;
  appearance: auto;
}
.phone-country-select:focus { outline: none; }
.phone-number-input {
  flex: 1;
  border: none !important;
  border-radius: 0 !important;
  margin-bottom: 0 !important;
  box-shadow: none !important;
}
.phone-number-input:focus {
  border: none !important;
  box-shadow: none !important;
}

/* phone+email行：垂直排列 */
.contact-form-row-phone {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 12px;
}

@media (max-width: 640px) {
  .phone-country-select { min-width: 110px; font-size: 12px; }
}