:root {
  --bg-black: #080808;
  --bg-card: #121212;
  --border-color: #262626;
  --cf-orange: #f6821f;
  --cf-orange-hover: #e07116;
  --text-main: #f5f5f5;
  --text-muted: #a3a3a3;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background-color: var(--bg-black);
  color: var(--text-main);
  overflow-x: hidden;
}

/* 顶部通知条 */
.top-banner {
  background: linear-gradient(90deg, #1d1005 0%, #2a1608 100%);
  border-bottom: 1px solid rgba(246, 130, 31, 0.2);
  padding: 8px 16px;
  text-align: center;
  font-size: 13px;
}
.banner-link {
  color: var(--cf-orange);
  text-decoration: none;
  font-weight: 600;
  margin-left: 8px;
}

/* 导航栏 */
.navbar {
  position: sticky;
  top: 0;
  background-color: rgba(8, 8, 8, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
}
.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
}
.nav-left {
  display: flex;
  align-items: center;
  gap: 36px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.cf-logo { width: 32px; height: 32px; }
.logo-text {
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 1px;
  color: #fff;
}
.nav-menu {
  display: flex;
  gap: 24px;
}
.nav-item {
  font-size: 14px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s;
}
.nav-item:hover { color: #fff; }
.arrow { font-size: 10px; opacity: 0.6; }

.nav-right { display: flex; align-items: center; gap: 20px; }
.nav-link { color: #fff; text-decoration: none; font-size: 14px; }
.btn-primary {
  background-color: var(--cf-orange);
  color: #fff;
  padding: 8px 16px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s;
}
.btn-primary:hover { background-color: var(--cf-orange-hover); }

/* Hero 视差效果 */
.hero {
  position: relative;
  padding: 120px 24px 100px;
  text-align: center;
}
.hero-bg-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse at center, rgba(246, 130, 31, 0.15) 0%, rgba(8, 8, 8, 0) 70%);
  pointer-events: none;
}
.hero-container { max-width: 900px; margin: 0 auto; position: relative; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 13px;
  color: var(--cf-orange);
  margin-bottom: 24px;
}
.badge-dot {
  width: 6px; height: 6px;
  background-color: var(--cf-orange);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--cf-orange);
}
.hero-title {
  font-size: 64px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}
.gradient-text {
  background: linear-gradient(90deg, #F6821F 0%, #FBAD14 40%, #0051C3 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-description {
  font-size: 20px;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px;
}
.hero-actions { display: flex; justify-content: center; gap: 16px; }
.btn-orange-lg {
  background-color: var(--cf-orange);
  color: #fff;
  padding: 14px 32px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  transition: transform 0.2s;
}
.btn-orange-lg:hover { transform: translateY(-2px); }
.btn-outline-lg {
  border: 1px solid var(--border-color);
  color: #fff;
  padding: 14px 32px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  background-color: rgba(255, 255, 255, 0.02);
  transition: background 0.2s, border-color 0.2s;
}
.btn-outline-lg:hover { border-color: #555; background-color: rgba(255, 255, 255, 0.05); }

/* 全球数据面板 */
.stats-section {
  border-y: 1px solid var(--border-color);
  background-color: rgba(255, 255, 255, 0.01);
  padding: 60px 24px;
}
.stats-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  text-align: center;
}
.stat-card { display: flex; flex-direction: column; align-items: center; }
.stat-number {
  font-size: 48px;
  font-weight: 800;
  display: inline-block;
  color: #fff;
}
.stat-unit { display: inline-block; font-size: 24px; color: var(--cf-orange); }
.stat-label { font-size: 14px; color: var(--text-muted); margin-top: 8px; }

/* 产品 Tab 区块 */
.products-section { padding: 100px 24px; }
.section-container { max-width: 1280px; margin: 0 auto; }
.section-title { font-size: 36px; text-align: center; margin-bottom: 40px; }

.tabs-header {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
}
.tab-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 10px 24px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 15px;
  transition: all 0.2s;
}
.tab-btn.active, .tab-btn:hover {
  background-color: var(--cf-orange);
  color: #fff;
  border-color: var(--cf-orange);
}

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

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.product-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 32px;
  transition: transform 0.3s, border-color 0.3s;
}
.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--cf-orange);
}
.card-icon { font-size: 32px; margin-bottom: 16px; }
.product-card h3 { font-size: 20px; margin-bottom: 12px; }
.product-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 24px; }
.card-link { color: var(--cf-orange); text-decoration: none; font-weight: 600; font-size: 14px; }

/* 响应式调整 */
@media (max-width: 768px) {
  .nav-menu { display: none; }
  .hero-title { font-size: 40px; }
  .hero-actions { flex-direction: column; }
  .tabs-header { flex-direction: column; }
}