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

:root {
  --bg-page: #F7F9FC;
  --bg-surface: #FFFFFF;
  --bg-muted: #EEF2F7;
  --primary: #1B6FD4;
  --primary-dark: #1458A8;
  --primary-light: #EBF4FF;
  --accent: #0D9488;
  --accent-light: #CCFBF1;
  --text-title: #0F172A;
  --text-body: #475569;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.1);
  --radius: 12px;
  --radius-lg: 16px;
  --serif: 'Noto Serif SC', 'Songti SC', serif;
  --sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --gradient-primary: linear-gradient(135deg, #1B6FD4 0%, #0D9488 100%);
  --gradient-cta: linear-gradient(135deg, #1B6FD4 0%, #1458A8 100%);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg-page);
  color: var(--text-body);
  line-height: 1.7;
  overflow-x: hidden;
}

::selection { background: rgba(27, 111, 212, 0.18); color: var(--text-title); }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-icon {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-family: var(--serif);
  font-weight: 900;
  font-size: 18px;
}

.nav-logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: 1px;
}

.nav-links { display: flex; gap: 32px; list-style: none; }

.nav-links a {
  text-decoration: none;
  color: var(--text-body);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--primary); }

.nav-cta {
  background: var(--primary);
  color: #fff;
  padding: 10px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(27, 111, 212, 0.3);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-title);
}

/* 移动端侧滑菜单 */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-overlay.open { opacity: 1; visibility: visible; }

.mobile-drawer {
  position: fixed;
  top: 0; right: 0;
  width: min(320px, 85vw);
  height: 100vh;
  background: var(--bg-surface);
  z-index: 1002;
  padding: 24px;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.mobile-drawer.open { transform: translateX(0); }

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.mobile-drawer-close {
  background: var(--bg-muted);
  border: none;
  width: 36px; height: 36px;
  border-radius: 8px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-body);
}

.mobile-drawer a {
  display: block;
  padding: 16px 4px;
  min-height: 48px;
  line-height: 1.4;
  color: var(--text-title);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}

.mobile-drawer a:hover { color: var(--primary); }

.mobile-drawer-cta {
  margin-top: auto;
  text-align: center;
  background: var(--primary) !important;
  color: #fff !important;
  border-radius: 8px !important;
  border: none !important;
  padding: 14px !important;
  font-weight: 600;
}

/* ===== 公共布局 ===== */
.section-container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

section { position: relative; }

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

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 2px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 12px;
  line-height: 1.35;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* ===== 按钮 ===== */
.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(27, 111, 212, 0.28);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-title);
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  transition: all 0.25s ease;
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-white {
  background: #fff;
  color: var(--primary);
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ===== Hero ===== */
.hero {
  padding: 120px 0 0;
  background: var(--bg-surface);
  overflow: hidden;
}

.hero-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--serif);
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.25;
  color: var(--text-title);
  margin-bottom: 16px;
}

.hero-title .highlight { color: var(--primary); }

.hero-subtitle {
  font-size: 18px;
  color: var(--text-body);
  margin-bottom: 12px;
  font-weight: 500;
}

.hero-desc {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 480px;
  line-height: 1.8;
}

.hero-features {
  display: flex;
  gap: 20px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-body);
  font-weight: 500;
}

.hero-feature i { color: var(--accent); }

.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-visual { position: relative; }

.hero-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-image-wrap img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  display: block;
}

.hero-tags {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.hero-tag {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-title);
  box-shadow: var(--shadow-sm);
}

.hero-tag i { color: var(--primary); vertical-align: -2px; margin-right: 4px; }

/* Hero 内嵌数据条 */
.hero-stats {
  background: var(--bg-muted);
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.hero-stats-grid {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

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

.hero-stat-value {
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 4px;
}

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

/* ===== 产品范围 ===== */
.products {
  padding: 80px 0;
  background: var(--bg-page);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.product-card {
  background: var(--bg-surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

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

.product-card-bar { height: 4px; }

.product-card-bar.blue { background: var(--primary); }
.product-card-bar.teal { background: var(--accent); }
.product-card-bar.purple { background: #7C3AED; }
.product-card-bar.orange { background: #EA580C; }

.product-card-body { padding: 24px 20px; }

.product-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}

.product-icon.blue { background: var(--primary-light); color: var(--primary); }
.product-icon.teal { background: var(--accent-light); color: var(--accent); }
.product-icon.purple { background: #EDE9FE; color: #7C3AED; }
.product-icon.orange { background: #FFEDD5; color: #EA580C; }

.product-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 8px;
}

.product-card p { font-size: 14px; color: var(--text-muted); line-height: 1.65; }

/* ===== 关于我们 ===== */
.about {
  padding: 80px 0;
  background: var(--bg-surface);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 64px;
}

.about-content h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 16px;
}

.about-content > p {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.85;
  margin-bottom: 28px;
}

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

.about-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--bg-page);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all 0.25s ease;
}

.about-feature-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.about-feature-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.about-feature-text h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 2px;
}

.about-feature-text p { font-size: 13px; color: var(--text-muted); }

.about-image { position: relative; }

.about-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: block;
}

.about-image-badge {
  position: absolute;
  bottom: -16px; right: 24px;
  background: var(--bg-surface);
  padding: 16px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  text-align: center;
  border: 1px solid var(--border);
}

.about-image-badge .value {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.about-image-badge .label { font-size: 13px; color: var(--text-muted); }

/* 全国布局 */
.city-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.city-card {
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
}

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

.city-photo { height: 160px; overflow: hidden; }

.city-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.city-info { padding: 18px 20px; }

.city-info h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.city-info h4 i { color: var(--primary); }

.city-info p { font-size: 14px; color: var(--text-muted); }

/* ===== 实力背书 ===== */
.clients {
  padding: 80px 0;
  background: var(--bg-muted);
}

.client-logos {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.client-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-title);
  padding: 14px 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.25s ease;
}

.client-logo:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.clients-note {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 40px;
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.8;
}

.clients-note strong { color: var(--text-title); }

.clients-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 560px;
  margin: 0 auto;
}

.clients-stat {
  text-align: center;
  padding: 28px 24px;
  background: var(--bg-surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.clients-stat .value {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

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

/* ===== 服务体系 ===== */
.services {
  padding: 80px 0;
  background: var(--bg-surface);
}

/* 横向时间轴 */
.service-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-bottom: 48px;
  position: relative;
}

.service-timeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 16.67%;
  right: 16.67%;
  height: 2px;
  background: var(--border);
  z-index: 0;
}

.service-step {
  text-align: center;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.step-dot {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 0 0 6px var(--primary-light);
}

.service-step h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 8px;
}

.service-step p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.service-details {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.service-detail {
  padding: 24px 20px;
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.25s ease;
}

.service-detail:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.sd-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  margin-bottom: 14px;
}

.service-detail h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 6px;
}

.service-detail p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 12px;
}

.sd-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 10px;
  border-radius: 4px;
}

/* ===== 团队实力 ===== */
.team {
  padding: 80px 0;
  background: var(--bg-page);
}

.team-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.team-stat {
  text-align: center;
  padding: 32px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.25s ease;
}

.team-stat:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.team-stat .value {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

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

.team-talent {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 40px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.team-talent p {
  font-size: 15px;
  color: var(--text-body);
  margin-bottom: 20px;
}

.talent-chips { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }

.talent-chip {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 20px;
}

.talent-chip.alt {
  color: var(--accent);
  background: var(--accent-light);
}

/* ===== 创始人 ===== */
.founder {
  padding: 80px 0;
  background: var(--bg-surface);
}

.founder-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 56px;
  align-items: center;
}

.founder-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: block;
}

.founder-content h3 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-title);
  margin-bottom: 6px;
}

.founder-content .title {
  font-size: 15px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 20px;
}

.founder-content > p {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.85;
  margin-bottom: 28px;
}

.founder-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.founder-stat {
  text-align: center;
  padding: 20px 12px;
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.founder-stat .value {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 2px;
}

.founder-stat .label { font-size: 13px; color: var(--text-muted); }

/* ===== 全网影响力 ===== */
.media {
  padding: 80px 0;
  background: var(--bg-page);
}

.media-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 720px;
  margin: 0 auto 40px;
}

.media-stat {
  text-align: center;
  padding: 28px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.media-stat .value {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

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

.media-platforms {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.media-platform {
  padding: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.25s ease;
}

.media-platform:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.mp-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.mp-head i { color: var(--primary); }

.mp-head h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-title);
}

.media-platform p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 14px;
}

.mp-chips { display: flex; gap: 8px; flex-wrap: wrap; }

.mp-chip {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-body);
  background: var(--bg-muted);
  padding: 4px 12px;
  border-radius: 4px;
}

/* ===== CTA ===== */
.cta {
  padding: 0;
  background: var(--gradient-cta);
}

.cta-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 56px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.cta-text h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.cta-text p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 480px;
}

.cta-actions { display: flex; gap: 12px; flex-shrink: 0; }

/* ===== Footer ===== */
.footer {
  padding: 56px 0 24px;
  background: #F1F5F9;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 16px;
  max-width: 280px;
}

.footer-compliance {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.footer-social { display: flex; gap: 10px; }

.footer-social a {
  width: 38px; height: 38px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: all 0.2s ease;
  cursor: pointer;
}

.footer-social a:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.footer-links h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 16px;
}

.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 10px; }

.footer-links a, .footer-links span {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-links a:hover { color: var(--primary); }

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 10px;
}

.footer-contact i { color: var(--primary); flex-shrink: 0; }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== QR Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active { opacity: 1; visibility: visible; }

.modal-content {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 40px 36px 32px;
  text-align: center;
  max-width: 380px;
  width: 90%;
  transform: scale(0.95) translateY(10px);
  transition: transform 0.3s ease;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal-content { transform: scale(1) translateY(0); }

.modal-close {
  position: absolute;
  top: 12px; right: 12px;
  width: 32px; height: 32px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-page);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s ease;
}

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

.modal-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 6px;
}

.modal-subtitle { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; }

.modal-qr {
  width: 200px; height: 200px;
  margin: 0 auto 20px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  padding: 8px;
  background: #fff;
}

.modal-qr img { width: 100%; height: 100%; object-fit: contain; display: block; }

.modal-tip {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.modal-tip i { color: var(--primary); }

/* ===== 滚动动画 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-container { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 560px; margin: 0 auto; width: 100%; }
  .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-image { max-width: 480px; margin: 0 auto; }
  .city-grid { grid-template-columns: repeat(2, 1fr); }
  .service-timeline { grid-template-columns: 1fr; gap: 0; }
  .service-timeline::before { display: none; }
  .service-details { grid-template-columns: repeat(2, 1fr); }
  .team-stats { grid-template-columns: repeat(2, 1fr); }
  .founder-grid { grid-template-columns: 1fr; gap: 32px; }
  .founder-image { max-width: 280px; margin: 0 auto; }
  .media-platforms { grid-template-columns: 1fr; }
  .media-stats { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .cta-inner { flex-direction: column; text-align: center; gap: 24px; }
  .cta-actions { justify-content: center; flex-wrap: wrap; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .mobile-menu-btn { display: block; }
  .mobile-overlay { display: block; }
  .nav-container { padding: 0 16px; height: 60px; }
  .nav-logo-text { font-size: 18px; }
  .nav-logo-icon { width: 36px; height: 36px; font-size: 16px; }

  .section-container { padding: 0 16px; }
  .section-header { margin-bottom: 32px; }
  .section-title { font-size: 24px; letter-spacing: 0; }
  .section-subtitle { font-size: 14px; line-height: 1.7; }

  /* Hero：文字优先、左对齐 */
  .hero { padding-top: 76px; }
  .hero-container {
    text-align: left;
    padding: 0 16px 24px;
    gap: 24px;
  }
  .hero-content { order: 1; }
  .hero-visual { order: 2; max-width: 100%; }
  .hero-badge { font-size: 12px; padding: 5px 12px; margin-bottom: 16px; }
  .hero-title { font-size: 32px; margin-bottom: 12px; }
  .hero-subtitle { font-size: 16px; margin-bottom: 10px; }
  .hero-desc { font-size: 14px; margin-bottom: 20px; max-width: none; line-height: 1.75; }
  .hero-features {
    justify-content: flex-start;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
  }
  .hero-feature { font-size: 13px; }
  .hero-buttons { justify-content: stretch; gap: 10px; }
  .hero-buttons .btn-primary,
  .hero-buttons .btn-secondary { flex: 1; min-width: 0; justify-content: center; padding: 13px 16px; font-size: 14px; }

  /* Hero 图片：降低高度，标签移到图片下方 */
  .hero-image-wrap { border-radius: var(--radius); box-shadow: var(--shadow-md); overflow: visible; }
  .hero-image-wrap img { height: 220px; border-radius: var(--radius); }
  .hero-tags {
    position: static;
    margin-top: 12px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .hero-tag {
    font-size: 12px;
    padding: 10px 8px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
  }

  /* Hero 数据：卡片化 2×2 */
  .hero-stats { padding: 20px 0; }
  .hero-stats-grid {
    padding: 0 16px;
    gap: 10px;
  }
  .hero-stat {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 10px;
  }
  .hero-stat-value { font-size: 24px; }
  .hero-stat-label { font-size: 12px; line-height: 1.4; }

  .about, .products, .services, .team, .media, .founder, .clients { padding: 56px 0; }
  .products-grid { gap: 12px; }
  .product-card-body { padding: 18px 16px; }
  .product-card h3 { font-size: 16px; }
  .product-card p { font-size: 13px; }

  .about-features { grid-template-columns: 1fr; gap: 10px; }
  .about-feature-item { padding: 14px; }
  .about-image-badge {
    right: 12px;
    bottom: -12px;
    padding: 12px 18px;
  }
  .about-image-badge .value { font-size: 22px; }

  .city-grid { grid-template-columns: 1fr; max-width: none; gap: 12px; }
  .city-photo { height: 140px; }

  .client-logos {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 28px;
  }
  .client-logo { font-size: 15px; padding: 12px 16px; letter-spacing: 2px; }
  .clients-note { font-size: 14px; margin-bottom: 28px; line-height: 1.75; }

  /* 服务时间轴：竖向带连接线 */
  .service-timeline { margin-bottom: 32px; }
  .service-step {
    text-align: left;
    padding: 0 0 28px 56px;
    position: relative;
  }
  .service-step:last-child { padding-bottom: 0; }
  .service-step::before {
    content: '';
    position: absolute;
    left: 19px;
    top: 44px;
    bottom: 0;
    width: 2px;
    background: var(--border);
  }
  .service-step:last-child::before { display: none; }
  .step-dot {
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    font-size: 16px;
    margin: 0;
    box-shadow: 0 0 0 4px var(--primary-light);
  }
  .service-step h3 { font-size: 16px; margin-bottom: 6px; }
  .service-step p { font-size: 13px; }

  .service-details { grid-template-columns: 1fr; gap: 12px; }
  .service-detail { padding: 20px 18px; }

  .team-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .team-stat { padding: 20px 12px; }
  .team-stat .value { font-size: 26px; }
  .team-talent { padding: 24px 20px; }
  .team-talent p { font-size: 14px; }

  .founder-grid { text-align: left; }
  .founder-image { max-width: 200px; margin: 0; }
  .founder-content h3 { font-size: 26px; }
  .founder-stats { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .founder-stat { padding: 14px 8px; }
  .founder-stat .value { font-size: 18px; }

  .media-stats { grid-template-columns: 1fr; max-width: none; gap: 10px; margin-bottom: 24px; }
  .media-stat { padding: 20px; }
  .media-stat .value { font-size: 28px; }
  .media-platform { padding: 20px 18px; }

  .cta-inner { padding: 40px 16px; }
  .cta-text h2 { font-size: 22px; }
  .cta-text p { font-size: 14px; }
  .cta-actions { width: 100%; flex-direction: column; }
  .cta-actions .btn-white { width: 100%; justify-content: center; }

  .footer { padding: 40px 0 calc(24px + env(safe-area-inset-bottom)); }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px 16px;
    text-align: left;
  }
  .footer-brand { grid-column: 1 / -1; text-align: center; }
  .footer-brand p { margin-left: auto; margin-right: auto; }
  .footer-social { justify-content: center; }
  .footer-compliance { text-align: center; border-top: none; padding-top: 0; }
  .footer-contact li { justify-content: flex-start; font-size: 13px; }
  .footer-links h4 { font-size: 13px; margin-bottom: 12px; }
  .footer-links li { margin-bottom: 8px; }

  /* Modal 底部弹出 */
  .modal-overlay { align-items: flex-end; padding: 0; }
  .modal-content {
    width: 100%;
    max-width: 100%;
    border-radius: 16px 16px 0 0;
    padding: 32px 24px calc(24px + env(safe-area-inset-bottom));
  }
  .modal-qr { width: 180px; height: 180px; }

  .mobile-drawer { padding-bottom: env(safe-area-inset-bottom); }
}

@media (max-width: 480px) {
  .hero-title { font-size: 28px; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn-primary,
  .hero-buttons .btn-secondary { flex: none; width: 100%; }

  .hero-stats-grid { gap: 8px; }
  .hero-stat-value { font-size: 22px; }
  .hero-stat-label { font-size: 11px; }

  /* 产品双列紧凑布局 */
  .products-grid { grid-template-columns: 1fr 1fr; }
  .product-icon { width: 36px; height: 36px; margin-bottom: 10px; }
  .product-card h3 { font-size: 15px; margin-bottom: 4px; }
  .product-card p {
    font-size: 11px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .clients-stat .value { font-size: 30px; }
  .founder-stats { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links:last-child { grid-column: 1; }
}