/* ===== 全局变量 ===== */
:root {
  --primary: #0066FF;
  --primary-dark: #0052CC;
  --primary-light: #3385FF;
  --accent: #00D4FF;
  --dark: #0A0E1A;
  --dark-2: #111827;
  --dark-3: #1F2937;
  --text: #1a1a2e;
  --text-secondary: #64748B;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --bg: #F8FAFC;
  --white: #ffffff;
  --gradient: linear-gradient(135deg, #0066FF 0%, #00D4FF 100%);
  --shadow: 0 4px 24px rgba(0, 102, 255, 0.1);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; }

/* ===== 通用布局 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.mt-16 { margin-top: 16px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(0, 102, 255, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 102, 255, 0.4);
}
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}
.btn-white {
  background: var(--white);
  color: var(--primary);
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.15); }
.btn-outline-white {
  border-color: rgba(255,255,255,0.6);
  color: var(--white);
  background: transparent;
}
.btn-outline-white:hover { background: rgba(255,255,255,0.15); }
.btn-sm { padding: 10px 22px; font-size: 14px; }

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  padding: 14px 0;
  box-shadow: 0 2px 30px rgba(0,0,0,0.08);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  font-size: 28px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}
/* 导航栏LOGO图片 */
.nav-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 0 6px rgba(0,212,255,0.4));
}
.logo-text, .footer-logo > div {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-cn {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
}
.logo-en {
  font-size: 10px;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}
/* Logo文字样式：白色 */
.logo-text-white {
  color: #ffffff;
}
.navbar.scrolled .logo-cn { color: var(--dark); }
.navbar:not(.scrolled) .logo-cn { color: var(--white); }
.navbar:not(.scrolled) .logo-en { color: rgba(255,255,255,0.7); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 15px;
  transition: var(--transition);
  color: rgba(255,255,255,0.85);
}
.navbar.scrolled .nav-link { color: var(--text-secondary); }
.nav-link:hover, .nav-link.active {
  background: rgba(255,255,255,0.15);
  color: var(--white);
}
.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active {
  background: rgba(0,102,255,0.08);
  color: var(--primary);
}
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle span { width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: var(--transition); }
.navbar.scrolled .nav-toggle span { background: var(--text); }

/* ===== Section Header ===== */
.section-header { text-align: center; margin-bottom: 60px; }
.section-header.light .section-title,
.section-header.light .section-desc { color: var(--white); }
.section-header.light .section-tag { background: rgba(255,255,255,0.15); color: var(--white); }
.section-tag {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(0,102,255,0.08);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  line-height: 1.3;
}
.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0A0E1A 0%, #0D1B3E 50%, #0A1628 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 60px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,102,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,102,255,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}
.orb1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,102,255,0.2) 0%, transparent 70%);
  top: -200px; right: -200px;
  animation: float 8s ease-in-out infinite;
}
.orb2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,212,255,0.15) 0%, transparent 70%);
  bottom: -100px; left: -100px;
  animation: float 10s ease-in-out infinite reverse;
}
@keyframes float {
  0%, 100% { transform: translateY(0px) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
}
/* Hero区域LOGO图片 */
.hero-logo-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 32px;
}
.hero-logo-img {
  width: 560px;
  height: auto;
  max-width: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 40px rgba(0,212,255,0.6)) drop-shadow(0 0 80px rgba(0,100,255,0.4));
  animation: heroLogoFloat 4s ease-in-out infinite;
}
@keyframes heroLogoFloat {
  0%, 100% { transform: translateY(0px); filter: drop-shadow(0 0 40px rgba(0,212,255,0.6)) drop-shadow(0 0 80px rgba(0,100,255,0.4)); }
  50% { transform: translateY(-15px); filter: drop-shadow(0 0 60px rgba(0,212,255,0.9)) drop-shadow(0 0 100px rgba(0,100,255,0.6)); }
}
.hero-badge {
  display: inline-block;
  padding: 8px 24px;
  border: 1px solid rgba(0,212,255,0.4);
  border-radius: 30px;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 30px;
  backdrop-filter: blur(10px);
  background: rgba(0,212,255,0.05);
}
.hero-title {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
  color: var(--white);
}
.hero-title .line1 { display: block; margin-bottom: 8px; }
.hero-title .line2 { display: block; }
.hero-title em {
  font-style: normal;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 18px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 40px;
  line-height: 1.8;
}
.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-stats {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0;
  margin-top: 80px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 28px 40px;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 40px;
}
.stat-num {
  font-size: 32px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 13px; color: rgba(255,255,255,0.5); margin-top: 4px; }
.stat-divider { width: 1px; height: 48px; background: rgba(255,255,255,0.1); }

/* ===== Features ===== */
.features-section { background: var(--bg); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(30px);
}
.feature-card.visible { opacity: 1; transform: translateY(0); }
.feature-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}
.feature-icon {
  width: 56px; height: 56px;
  background: rgba(0,102,255,0.08);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}
.feature-icon svg { width: 28px; height: 28px; }
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; color: var(--dark); }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== Business Tabs ===== */
.business-section { background: var(--white); }
.tab-nav {
  display: flex;
  gap: 8px;
  background: var(--bg);
  padding: 6px;
  border-radius: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.tab-btn {
  flex: 1;
  padding: 12px 24px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}
.tab-btn.active {
  background: var(--white);
  color: var(--primary);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.tab-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 48px;
}
.tab-text h3 { font-size: 26px; font-weight: 700; margin-bottom: 24px; color: var(--dark); }
.tab-list { margin-bottom: 32px; }
.tab-list li {
  padding: 10px 0;
  padding-left: 24px;
  position: relative;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  border-bottom: 1px solid var(--border);
}
.tab-list li:last-child { border-bottom: none; }
.tab-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px; height: 8px;
  background: var(--primary);
  border-radius: 50%;
}
.visual-card {
  background: linear-gradient(135deg, #0A0E1A, #0D1B3E);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  border: 1px solid rgba(0,102,255,0.2);
}
.visual-icon { font-size: 72px; margin-bottom: 28px; display: block; }
.visual-stats { display: flex; flex-direction: column; gap: 16px; }
.vs-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(255,255,255,0.05);
  border-radius: 8px;
}
.vs-item span { font-size: 13px; color: rgba(255,255,255,0.5); }
.vs-item strong { font-size: 16px; color: var(--accent); font-weight: 600; }

/* ===== Products ===== */
.products-section { background: var(--bg); }
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  opacity: 0;
  transform: translateY(30px);
}
.product-card.visible { opacity: 1; transform: translateY(0); }
.product-card:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.product-card.featured {
  border-color: var(--primary);
  background: linear-gradient(135deg, #f0f7ff 0%, #e8f4ff 100%);
}
.product-badge {
  position: absolute;
  top: 20px; right: 20px;
  padding: 4px 12px;
  background: var(--gradient);
  color: var(--white);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}
.product-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}
.product-icon {
  font-size: 36px;
  width: 60px; height: 60px;
  background: rgba(0,102,255,0.1);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-card.featured .product-icon { background: rgba(0,102,255,0.15); }
.product-header h3 { font-size: 20px; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.product-sub { font-size: 13px; color: var(--text-secondary); }
.product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 28px;
}
.spec-item {
  background: rgba(0,102,255,0.04);
  border-radius: 8px;
  padding: 10px 14px;
}
.product-card.featured .spec-item { background: rgba(0,102,255,0.08); }
.spec-label { font-size: 11px; color: var(--text-muted); display: block; margin-bottom: 2px; }
.spec-value { font-size: 15px; font-weight: 600; color: var(--primary); }
.system-card .product-header { margin-bottom: 20px; }
.system-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}
.sf-item {
  padding: 6px 14px;
  background: rgba(0,102,255,0.06);
  border-radius: 20px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
}

/* ===== Architecture ===== */
.arch-section {
  background: linear-gradient(135deg, #0A0E1A 0%, #0D1B3E 100%);
}
.arch-layers {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.arch-layer {
  display: flex;
  align-items: center;
  gap: 24px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 24px 32px;
  transition: var(--transition);
  opacity: 0;
  transform: translateX(-20px);
}
.arch-layer.visible { opacity: 1; transform: translateX(0); }
.arch-layer:hover {
  background: rgba(0,102,255,0.1);
  border-color: rgba(0,102,255,0.3);
  transform: translateX(8px);
}
.layer-num {
  font-size: 36px;
  font-weight: 700;
  color: rgba(0,102,255,0.3);
  min-width: 60px;
  font-family: 'Courier New', monospace;
}
.layer-content h4 { font-size: 17px; font-weight: 600; color: var(--white); margin-bottom: 10px; }
.layer-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.layer-tags span {
  padding: 4px 14px;
  background: rgba(0,102,255,0.15);
  border: 1px solid rgba(0,102,255,0.3);
  border-radius: 20px;
  font-size: 13px;
  color: var(--accent);
}

/* ===== Trust ===== */
.trust-section { background: var(--bg); }
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.trust-item {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.trust-item:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow); }
.trust-icon { font-size: 44px; margin-bottom: 16px; display: block; }
.trust-item h4 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--dark); }
.trust-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== CTA ===== */
.cta-section {
  background: var(--gradient);
  padding: 80px 24px;
  text-align: center;
}
.cta-content h2 { font-size: 32px; font-weight: 700; color: var(--white); margin-bottom: 12px; }
.cta-content p { font-size: 17px; color: rgba(255,255,255,0.8); margin-bottom: 36px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.footer {
  background: var(--dark-2);
  padding: 72px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-logo-img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}
.footer-logo .logo-cn { color: var(--white); font-size: 18px; }
.footer-logo .logo-en { color: rgba(255,255,255,0.4); }
.footer-intro { font-size: 14px; color: rgba(255,255,255,0.45); line-height: 1.8; }
.footer-links h5, .footer-contact h5 {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 20px;
}
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul li a { font-size: 14px; color: rgba(255,255,255,0.45); transition: var(--transition); }
.footer-links ul li a:hover { color: var(--white); }
.footer-contact p { font-size: 14px; color: rgba(255,255,255,0.45); margin-bottom: 8px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.3); }

/* ===== 页面内页头 ===== */
.page-hero {
  padding: 140px 24px 80px;
  background: linear-gradient(135deg, #0A0E1A 0%, #0D1B3E 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,102,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,102,255,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(36px, 5vw, 56px); font-weight: 700; color: var(--white); margin-bottom: 16px; }
.page-hero p { font-size: 18px; color: rgba(255,255,255,0.6); max-width: 600px; margin: 0 auto; }
.page-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.page-breadcrumb a { color: rgba(255,255,255,0.6); }
.page-breadcrumb a:hover { color: var(--accent); }
.page-breadcrumb span { color: var(--accent); }

/* ===== 关于我们页 ===== */
.about-intro { background: var(--white); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about-text h2 { font-size: 36px; font-weight: 700; line-height: 1.3; margin-bottom: 20px; }
.about-text h2 em { font-style: normal; color: var(--primary); }
.about-text p { font-size: 16px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 36px;
}
.ah-item {
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius);
  border-left: 3px solid var(--primary);
}
.ah-item strong { display: block; font-size: 20px; color: var(--primary); margin-bottom: 4px; }
.ah-item span { font-size: 13px; color: var(--text-secondary); }

.about-visual {
  position: relative;
}
.about-img-box {
  background: linear-gradient(135deg, #ffffff, #f5f7fa);
  border-radius: 24px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 120px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}
.about-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 32px;
  box-sizing: border-box;
}
.about-float-card {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--white);
  border-radius: 16px;
  padding: 20px 24px;
  box-shadow: var(--shadow-lg);
  min-width: 200px;
}
.afc-num { font-size: 32px; font-weight: 700; color: var(--primary); }
.afc-text { font-size: 13px; color: var(--text-secondary); }

/* 历程 */
.timeline-section { background: var(--bg); }
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
  transform: translateX(-50%);
}
.tl-item {
  display: flex;
  gap: 40px;
  margin-bottom: 40px;
  align-items: center;
}
.tl-item:nth-child(even) { flex-direction: row-reverse; }
.tl-content {
  flex: 1;
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  text-align: right;
}
.tl-item:nth-child(even) .tl-content { text-align: left; }
.tl-year {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  min-width: 80px;
  padding: 8px 16px;
  text-align: center;
  position: relative;
  z-index: 2;
  background: var(--white);
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tl-content h4 { font-size: 16px; font-weight: 600; color: var(--dark); margin-bottom: 6px; }
.tl-content p { font-size: 14px; color: var(--text-secondary); }
.values-section { background: var(--white); }
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.value-card {
  text-align: center;
  padding: 40px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.value-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow); }
.value-icon { font-size: 48px; margin-bottom: 16px; display: block; }
.value-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.value-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== 产品服务页 ===== */
.products-intro-section { background: var(--white); }
.product-detail-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-bottom: 40px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.product-detail-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.product-detail-card.reverse { direction: rtl; }
.product-detail-card.reverse > * { direction: ltr; }
.pd-label { font-size: 13px; font-weight: 500; color: var(--primary); letter-spacing: 1px; margin-bottom: 12px; }
.pd-title { font-size: 30px; font-weight: 700; color: var(--dark); margin-bottom: 16px; }
.pd-desc { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 28px; }
.pd-specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}
.pd-spec {
  background: var(--white);
  border-radius: var(--radius);
  padding: 14px;
  text-align: center;
  border: 1px solid var(--border);
}
.pd-spec-val { font-size: 18px; font-weight: 700; color: var(--primary); display: block; }
.pd-spec-key { font-size: 11px; color: var(--text-muted); margin-top: 2px; display: block; }
.pd-visual {
  background: linear-gradient(135deg, #0A0E1A, #0D1B3E);
  border-radius: 20px;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 100px;
  border: 1px solid rgba(0,102,255,0.2);
  position: relative;
  overflow: hidden;
}
.pd-visual-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
}
.pd-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(0,102,255,0.05));
}

.solution-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.solution-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.solution-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow); }
.sc-num {
  font-size: 48px;
  font-weight: 700;
  color: rgba(0,102,255,0.1);
  line-height: 1;
  margin-bottom: 12px;
}
.solution-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--dark); }
.solution-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.solution-card ul { margin-top: 12px; }
.solution-card ul li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 6px 0;
  padding-left: 16px;
  position: relative;
  border-bottom: 1px solid var(--bg);
}
.solution-card ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* ===== 联系我们页 ===== */
.contact-section { background: var(--bg); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
}
.contact-info h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; color: var(--dark); }
.contact-info > p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 36px; }
.ci-cards { display: flex; flex-direction: column; gap: 16px; }
.ci-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.ci-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.ci-icon {
  width: 44px; height: 44px;
  background: rgba(0,102,255,0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.ci-label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.ci-value { font-size: 15px; font-weight: 500; color: var(--dark); }

.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid var(--border);
}
.contact-form h3 { font-size: 24px; font-weight: 700; margin-bottom: 32px; color: var(--dark); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  transition: var(--transition);
  background: var(--bg);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(0,102,255,0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit { width: 100%; justify-content: center; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .product-detail-card { grid-template-columns: 1fr; }
  .product-detail-card.reverse { direction: ltr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 70px 0; }
  .hero-stats {
    flex-wrap: wrap;
    gap: 20px;
    padding: 20px;
  }
  .stat-item { padding: 0 16px; }
  .stat-divider { display: none; }
  .tab-inner { grid-template-columns: 1fr; gap: 24px; }
  .values-grid { grid-template-columns: 1fr; }
  .solution-cards { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .nav-links {
    display: none;
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: rgba(10,14,26,0.98);
    flex-direction: column;
    padding: 20px;
    gap: 8px;
    border-top: 1px solid rgba(255,255,255,0.1);
  }
  .nav-links.open { display: flex; }
  .nav-link { color: rgba(255,255,255,0.8) !important; }
  .nav-link:hover, .nav-link.active {
    background: rgba(0,102,255,0.2) !important;
    color: var(--white) !important;
  }
  .nav-toggle { display: flex; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .features-grid { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 20px; }
  .tl-item, .tl-item:nth-child(even) { flex-direction: row; }
  .tl-content { text-align: left !important; }
  .tl-year {
    min-width: 60px;
    font-size: 20px;
    padding: 6px 12px;
  }
  .timeline { padding-left: 20px; }
}