/* ===== 翰灵云品牌网站样式 ===== */
:root {
  --primary: #00A1FF;
  --primary-dark: #0080D4;
  --primary-light: #E6F4FF;
  --primary-gradient: linear-gradient(135deg, #00A1FF 0%, #0066CC 100%);
  --accent: #0066CC;
  --text-primary: #1A2B4A;
  --text-secondary: #5A6B85;
  --text-muted: #8895A8;
  --bg-light: #F8FAFC;
  --bg-white: #FFFFFF;
  --bg-dark: #0F1B2D;
  --border: #E2E8F0;
  --shadow-sm: 0 2px 8px rgba(0, 161, 255, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 161, 255, 0.10);
  --shadow-lg: 0 16px 48px rgba(0, 161, 255, 0.16);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-white);
  overflow-x: hidden;
}

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

a:hover { color: var(--primary-dark); }

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

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  background: rgba(255, 255, 255, 0);
  backdrop-filter: blur(0px);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  padding: 10px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.nav-menu {
  display: flex;
  gap: 8px;
  list-style: none;
  align-items: center;
}

.nav-menu a {
  color: var(--text-primary);
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
}

.navbar:not(.scrolled) .nav-menu a { color: #fff; }
.navbar:not(.scrolled) .nav-menu a:hover { background: rgba(255,255,255,0.15); }

.navbar.scrolled .nav-menu a:hover { background: var(--primary-light); color: var(--primary); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: var(--transition);
}

/* ===== Banner ===== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #001f3f 0%, #003366 35%, #0066CC 70%, #00A1FF 100%);
  position: relative;
  display: flex;
  align-items: center;
  padding: 100px 0 60px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(0,161,255,0.3) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(120,180,255,0.25) 0%, transparent 40%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-text { color: #fff; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 161, 255, 0.2);
  border: 1px solid rgba(0, 161, 255, 0.4);
  border-radius: 100px;
  font-size: 13px;
  color: #B3DFFF;
  margin-bottom: 20px;
}

.hero-badge::before {
  content: "";
  width: 6px; height: 6px;
  background: #00A1FF;
  border-radius: 50%;
  box-shadow: 0 0 8px #00A1FF;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.hero h1 .gradient {
  background: linear-gradient(90deg, #66B3FF 0%, #00A1FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-slogan {
  font-size: clamp(20px, 2.5vw, 26px);
  color: rgba(255,255,255,0.9);
  margin-bottom: 16px;
  font-weight: 500;
}

.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
  padding: 24px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}

.hero-stat-num {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: #66B3FF;
  line-height: 1;
  margin-bottom: 8px;
}

.hero-stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 100px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, #00A1FF 0%, #0066CC 100%);
  color: #fff;
  box-shadow: 0 8px 24px rgba(0,161,255,0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0,161,255,0.5);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
  color: #fff;
}

.btn-text {
  background: transparent;
  color: var(--primary);
  padding: 8px 0;
  font-weight: 600;
}

.btn-text:hover { transform: translateX(4px); }

.hero-visual {
  position: relative;
  height: 480px;
}

.hero-orb {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-orb::before, .hero-orb::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.hero-orb::before {
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(0,161,255,0.4) 0%, transparent 70%);
  filter: blur(40px);
  animation: pulse 4s ease-in-out infinite;
}

.hero-orb::after {
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(120,180,255,0.5) 0%, transparent 70%);
  filter: blur(30px);
  animation: pulse 3s ease-in-out infinite reverse;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.15); opacity: 1; }
}

.hero-logo-large {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 12px 24px;
}

.hero-brand-mark {
  width: 220px;
  height: auto;
  flex-shrink: 0;
  filter:
    drop-shadow(0 14px 32px rgba(0, 161, 255, 0.6))
    drop-shadow(0 0 6px rgba(102, 179, 255, 0.45));
  animation: floatY 6s ease-in-out infinite;
}

.hero-brand-text {
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-align: left;
  justify-content: center;
}

.hero-brand-cn {
  font-size: 76px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  letter-spacing: 4px;
  background: linear-gradient(135deg, #ffffff 0%, #c2e6ff 50%, #66b3ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  text-shadow: 0 8px 36px rgba(102, 179, 255, 0.3);
}

.hero-brand-en {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 10px;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  white-space: nowrap;
}

/* ===== 装饰圆环 ===== */
.hero-ring {
  position: absolute;
  border: 1.5px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  animation: spin 20s linear infinite;
  pointer-events: none;
}

.hero-ring-1 { width: 460px; height: 460px; }
.hero-ring-2 {
  width: 540px; height: 540px;
  animation-direction: reverse;
  animation-duration: 30s;
  border-style: dashed;
  border-color: rgba(255, 255, 255, 0.14);
}

/* 图标轻微浮动 */
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Section 通用 ===== */
.section {
  padding: 100px 0;
  position: relative;
}

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

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-title .accent {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
}

/* ===== 企业概况 ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text h3 {
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--primary);
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.about-vmv {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.vmv-card {
  padding: 20px;
  background: var(--bg-light);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.vmv-card strong {
  display: block;
  color: var(--primary);
  margin-bottom: 6px;
  font-size: 15px;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card {
  background: linear-gradient(135deg, #fff 0%, var(--bg-light) 100%);
  padding: 28px 24px;
  border-radius: var(--radius);
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.stat-num {
  font-size: 36px;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 14px;
}

/* ===== 集团架构 ===== */
.group-architecture {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.entity-card {
  text-align: center;
  padding: 28px 20px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  position: relative;
  transition: var(--transition);
}

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

.entity-card::before {
  content: "子公司";
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 11px;
  padding: 2px 8px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 100px;
}

.entity-card.parent::before { content: "母公司"; background: #FFE6CC; color: #FF8800; }

.entity-icon {
  width: 60px; height: 60px;
  background: var(--primary-gradient);
  border-radius: 12px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  font-weight: 800;
}

.entity-name { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.entity-role { font-size: 13px; color: var(--text-secondary); }

/* ===== 团队 ===== */
.team-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.team-tab {
  padding: 10px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 100px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  font-family: inherit;
}

.team-tab.active, .team-tab:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.member-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.member-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.member-photo {
  aspect-ratio: 3/4;
  background: linear-gradient(135deg, #E6F4FF 0%, #B3DFFF 100%);
  display: flex;
  align-items: end;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.member-photo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: bottom;
  transition: var(--transition);
}

.member-card:hover .member-photo img { transform: scale(1.05); }

.member-info {
  padding: 24px;
  text-align: center;
}

.member-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}

.member-title {
  font-size: 14px;
  color: var(--primary);
  margin-bottom: 12px;
  font-weight: 500;
}

.member-bio {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 业务体系 ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  padding: 40px 32px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

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

.service-icon {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, #E6F4FF 0%, #B3DFFF 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
}

.service-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.service-tagline {
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 16px;
}

.service-desc {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 20px;
  line-height: 1.8;
}

.service-features {
  list-style: none;
  display: grid;
  gap: 8px;
  margin-bottom: 24px;
}

.service-features li {
  padding-left: 24px;
  position: relative;
  font-size: 14px;
  color: var(--text-secondary);
}

.service-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
}

/* ===== 产品矩阵 ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.product-card {
  padding: 32px 28px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.product-number {
  position: absolute;
  top: 16px; right: 24px;
  font-size: 56px;
  font-weight: 900;
  color: var(--primary-light);
  line-height: 1;
  opacity: 0.6;
}

.product-icon {
  width: 56px; height: 56px;
  background: var(--primary-gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  margin-bottom: 20px;
}

.product-name {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 6px;
}

.product-tag {
  font-size: 12px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 2px 10px;
  border-radius: 100px;
  display: inline-block;
  margin-bottom: 12px;
}

.product-cap {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 发展历程 ===== */
.timeline {
  max-width: 880px;
  margin: 0 auto;
  position: relative;
  padding: 20px 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
  transform: translateX(-50%);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  margin-bottom: 48px;
  position: relative;
  align-items: center;
}

.timeline-item:nth-child(odd) .timeline-content { text-align: right; grid-column: 1; grid-row: 1; }
.timeline-item:nth-child(odd) .timeline-empty { grid-column: 3; grid-row: 1; }
.timeline-item:nth-child(even) .timeline-content { text-align: left; grid-column: 3; grid-row: 1; }
.timeline-item:nth-child(even) .timeline-empty { grid-column: 1; grid-row: 1; }

.timeline-dot {
  width: 18px; height: 18px;
  background: #fff;
  border: 3px solid var(--primary);
  border-radius: 50%;
  position: relative;
  z-index: 2;
  grid-column: 2;
  grid-row: 1;
  justify-self: center;
  box-shadow: 0 0 0 6px rgba(0,161,255,0.15);
}

.timeline-year {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 6px;
}

.timeline-event {
  font-size: 15px;
  color: var(--text-secondary);
}

/* ===== 优势 ===== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 64px;
}

.advantage-card {
  text-align: center;
  padding: 32px 16px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.advantage-icon {
  width: 56px; height: 56px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
}

.advantage-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.advantage-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.compare-table {
  max-width: 920px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.compare-row {
  display: grid;
  grid-template-columns: 1.4fr 1.6fr 1.6fr;
  background: var(--bg-light);
  padding: 14px 24px;
  font-weight: 700;
  font-size: 15px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

.compare-row .us { color: var(--primary); }

.compare-cell {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1.4fr 1.6fr 1.6fr;
  font-size: 14px;
  color: var(--text-secondary);
  align-items: center;
}

.compare-cell:last-child { border-bottom: none; }

.compare-cell strong { color: var(--text-primary); }

.compare-cell .us { color: var(--primary); font-weight: 600; }

/* ===== 行业方案 ===== */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.industry-card {
  padding: 32px 20px;
  text-align: center;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.industry-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
}

.industry-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.industry-name {
  font-size: 16px;
  font-weight: 600;
}

/* ===== 案例 ===== */
.cases-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
}

.cases-list {
  display: grid;
  gap: 20px;
}

.case-card {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

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

.case-img {
  background: linear-gradient(135deg, #001f3f 0%, #0066CC 100%);
  min-height: 200px;
  position: relative;
}

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

.case-info {
  padding: 28px;
}

.case-tag {
  display: inline-block;
  font-size: 12px;
  padding: 2px 10px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 100px;
  margin-bottom: 12px;
}

.case-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.case-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.case-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.case-stat-num {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
}

.case-stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

.logo-wall {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--border);
}

.logo-wall-title {
  font-size: 15px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.logo-item {
  aspect-ratio: 16/9;
  background: var(--bg-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  padding: 8px;
  transition: var(--transition);
}

.logo-item:hover {
  background: var(--primary-light);
  color: var(--primary);
}

/* ===== AIGC 培训 ===== */
.training-banner {
  background: linear-gradient(135deg, #001f3f 0%, #0066CC 100%);
  border-radius: var(--radius-lg);
  padding: 60px 48px;
  color: #fff;
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}

.training-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 50%, rgba(0,161,255,0.4) 0%, transparent 50%);
}

.training-banner-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: center;
}

.training-banner h2 {
  font-size: 32px;
  margin-bottom: 16px;
  font-weight: 800;
}

.training-banner p {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: 8px;
}

.training-banner .badge {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(255,255,255,0.2);
  border-radius: 100px;
  font-size: 13px;
  margin-bottom: 16px;
}

.training-advantages {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.training-advantage {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-light);
  border-radius: var(--radius);
}

.training-advantage-icon { font-size: 28px; margin-bottom: 8px; }
.training-advantage-title { font-size: 14px; font-weight: 700; }

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.course-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

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

.course-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  border-radius: 100px;
  margin-bottom: 12px;
}

.course-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.course-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.course-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  padding-top: 12px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

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

.contact-info {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
}

.contact-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}

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

.contact-icon {
  width: 48px; height: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-value a { color: var(--text-primary); }
.contact-value a:hover { color: var(--primary); }

.contact-qr {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}

.qr-block {
  text-align: center;
}

.qr-img {
  width: 100px; height: 100px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.qr-label {
  font-size: 12px;
  color: var(--text-secondary);
}

.map-block {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  height: 480px;
  display: flex;
  flex-direction: column;
}

.map-placeholder {
  flex: 1;
  background: linear-gradient(135deg, #E6F4FF 0%, #B3DFFF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: var(--primary);
  font-weight: 600;
  position: relative;
}

.map-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,161,255,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,161,255,0.1) 1px, transparent 1px);
  background-size: 40px 40px;
}

.map-pin {
  position: relative;
  z-index: 2;
  width: 56px; height: 56px;
  background: var(--primary);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(0,161,255,0.4);
}

.map-pin::after {
  content: "";
  position: absolute;
  inset: 12px;
  background: #fff;
  border-radius: 50%;
}

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

.map-info-name { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.map-info-addr { font-size: 13px; opacity: 0.8; }

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 20px;
}

.footer-brand-name {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.footer p, .footer li {
  font-size: 14px;
  line-height: 1.9;
}

.footer ul { list-style: none; }
.footer ul a { color: rgba(255,255,255,0.7); }
.footer ul a:hover { color: #66B3FF; }

.footer-qr {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.footer-qr-block {
  text-align: center;
}

.footer-qr-img {
  width: 80px; height: 80px;
  background: rgba(255,255,255,0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 4px;
}

.footer-qr-label { font-size: 11px; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

/* ===== Modal ===== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 27, 45, 0.7);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.3s;
}

.modal.active {
  display: flex;
  opacity: 1;
}

.modal-content {
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 720px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  padding: 48px;
  transform: scale(0.9);
  transition: transform 0.3s;
}

.modal.active .modal-content { transform: scale(1); }

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--bg-light);
  border: none;
  width: 36px; height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--primary-light);
  color: var(--primary);
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s, transform 0.8s;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-visual { height: 280px; }
  .hero-logo-large { gap: 16px; padding: 6px 12px; }
  .hero-brand-mark { width: 104px; }
  .hero-brand-cn   { font-size: 42px; letter-spacing: 3px; }
  .hero-brand-en   { font-size: 11px; letter-spacing: 4px; }
  .hero-ring-1     { width: 240px; height: 240px; }
  .hero-ring-2     { width: 300px; height: 300px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .services-grid { grid-template-columns: 1fr; }
  .group-architecture { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(3, 1fr); }
  .training-advantages { grid-template-columns: repeat(3, 1fr); }
  .cases-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .training-banner-inner { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .nav-menu {
    position: fixed;
    top: 70px; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    width: 280px;
    height: calc(100vh - 70px);
    padding: 24px;
    transform: translateX(100%);
    transition: transform 0.3s;
    box-shadow: -4px 0 24px rgba(0,0,0,0.1);
  }
  .nav-menu.active { transform: translateX(0); }
  .nav-menu a { color: var(--text-primary) !important; }
  .nav-toggle { display: block; }
  .hero { padding: 100px 0 40px; }
  .hero-stats { grid-template-columns: 1fr 1fr; padding: 16px; gap: 12px; }
  .hero-stat-num { font-size: 22px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .about-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 20px 16px; }
  .stat-num { font-size: 28px; }
  .group-architecture { grid-template-columns: 1fr; gap: 12px; }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .training-advantages { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .case-card { grid-template-columns: 1fr; }
  .case-img { min-height: 180px; }
  .timeline::before { left: 20px; }
  .timeline-item { grid-template-columns: 40px 1fr; gap: 16px; }
  .timeline-dot { grid-column: 1; }
  .timeline-item .timeline-content { grid-column: 2 !important; text-align: left !important; grid-row: 1; }
  .timeline-item .timeline-empty { display: none; }
  .modal-content { padding: 32px 24px; }
  .container { padding: 0 16px; }
}

@media (max-width: 480px) {
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .advantages-grid { grid-template-columns: 1fr; }
  .training-advantages { grid-template-columns: 1fr; }
}



/* ===== 卡片悬停延展 ===== */
.course-extra {
  max-height: 0;
  opacity: 0;
  margin-top: 0;
  overflow: hidden;
  transition: max-height .35s ease, opacity .25s ease .05s, margin-top .3s ease;
}

.course-extra-section { margin-bottom: 12px; }
.course-extra-section:last-of-type { margin-bottom: 0; }

.course-extra-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.course-extra-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.course-extra-cta {
  display: inline-block;
  margin-top: 14px;
  padding: 8px 18px;
  background: var(--primary-gradient);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 100px;
  text-decoration: none;
  letter-spacing: 1px;
  transition: transform .2s ease;
}
.course-extra-cta:hover { transform: translateX(2px); }

@media (hover: hover) and (pointer: fine) {
  .course-card:hover .course-extra {
    max-height: 360px;
    opacity: 1;
    margin-top: 16px;
  }
  .course-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }
}