```css
/* 重置样式 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* 基础样式 */
html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: #0b0e1a;
  color: #e8edf5;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

/* 暗色模式（默认暗黑） */
.dark-mode .glass {
  background: rgba(10, 15, 30, 0.6);
}

.dark-mode .card {
  background: rgba(16, 24, 45, 0.8);
}

/* 亮色模式（通过JS切换） */
body.light-mode {
  background: #f0f4fa;
  color: #1a1e2a;
}

body.light-mode .glass {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(0, 0, 0, 0.08);
}

body.light-mode .card {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(0, 0, 0, 0.1);
}

body.light-mode .section-title {
  background: linear-gradient(135deg, #1a1e2a, #f0c040);
  -webkit-background-clip: text;
  background-clip: text;
}

body.light-mode .hero h1 span {
  background: linear-gradient(135deg, #d9a830, #f0c040);
  -webkit-background-clip: text;
  background-clip: text;
}

body.light-mode .stat-num {
  color: #d9a830;
}

body.light-mode .banner-slide {
  background: linear-gradient(145deg, #e8edf5, #d0d8e8);
}

body.light-mode .banner-slide p {
  color: #3a4a6a;
}

body.light-mode .faq-answer {
  color: #4a5a7a;
}

body.light-mode .partner-logos {
  filter: brightness(1);
  opacity: 1;
}

body.light-mode footer {
  background: #e0e6f0;
  border-top-color: rgba(0, 0, 0, 0.08);
}

body.light-mode .footer-grid a {
  color: #5a6a8a;
}

body.light-mode .copyright {
  color: #8a9bb8;
}

body.light-mode .nav-wrap {
  background: rgba(240, 244, 250, 0.85);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

body.light-mode .mobile-menu {
  background: #e8edf5;
}

body.light-mode .hamburger span {
  background: #1a1e2a;
}

body.light-mode .dark-toggle {
  background: rgba(0, 0, 0, 0.08);
  color: #1a1e2a;
}

/* 通用链接 */
a {
  color: inherit;
  text-decoration: none;
}

/* 列表重置 */
ul {
  list-style: none;
}

/* 图片 */
img {
  display: block;
  max-width: 100%;
}

/* 容器 */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 毛玻璃效果 */
.glass {
  background: rgba(18, 25, 45, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* 卡片样式 */
.card {
  background: rgba(20, 30, 55, 0.7);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  transition: transform 0.25s, box-shadow 0.25s;
  border: 1px solid rgba(255, 215, 0, 0.1);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7);
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #f0c040, #d9a830);
  color: #0b0e1a;
  font-weight: 600;
  padding: 12px 32px;
  border-radius: 40px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: scale(1.04);
  box-shadow: 0 8px 24px rgba(240, 192, 64, 0.4);
}

/* 区块通用 */
.section {
  padding: 80px 0;
}

/* 区块标题 */
.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #f0e6d0, #f0c040);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-sub {
  color: #a0b0cc;
  margin-bottom: 48px;
  font-size: 1.1rem;
}

/* 网格布局 */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

/* 弹性居中 */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 导航栏 */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 14, 26, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(240, 192, 64, 0.15);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1280px;
  margin: 0 auto;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #f0c040, #e0b020);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 32px;
  font-weight: 500;
}

.nav-links a:hover {
  color: #f0c040;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  width: 28px;
  height: 3px;
  background: #e8edf5;
  border-radius: 4px;
  transition: background 0.3s;
}

.mobile-menu {
  display: none;
  background: #121a2e;
  padding: 20px;
  border-radius: 24px;
  margin-top: 12px;
  flex-direction: column;
  gap: 12px;
}

.mobile-menu.active {
  display: flex;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hamburger {
    display: flex;
  }
}

/* Hero 区域 */
.hero {
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero h1 {
  font-size: 3.6rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero h1 span {
  background: linear-gradient(135deg, #f0d080, #f0a830);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: #b0c0dd;
  max-width: 700px;
  margin: 0 auto 40px;
}

.hero-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(240, 192, 64, 0.08), transparent 70%);
  top: -120px;
  right: -120px;
  z-index: -1;
}

/* Banner轮播 */
.banner-carousel {
  position: relative;
  overflow: hidden;
  border-radius: 32px;
  margin: 40px 0;
  background: #10182a;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6);
}

.banner-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.banner-slide {
  min-width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 32px;
  background: linear-gradient(145deg, #1a2645, #0f1a30);
}

.banner-slide h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.banner-slide p {
  max-width: 500px;
  color: #b0c4e0;
}

.banner-dots {
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 16px 0;
}

.banner-dots span {
  width: 12px;
  height: 12px;
  background: #3a4a6a;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.3s;
}

.banner-dots span.active {
  background: #f0c040;
}

/* 数字动画 */
.stat-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 48px;
  margin-top: 32px;
}

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

.stat-num {
  font-size: 3rem;
  font-weight: 800;
  color: #f0c040;
}

.stat-label {
  color: #8aa0c0;
}

/* 品牌介绍 */
.brand-story {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: center;
}

.brand-story .text {
  flex: 1 1 300px;
}

.brand-story .svg-illus {
  flex: 1 1 240px;
  text-align: center;
}

/* 团队卡片 */
.team-card {
  text-align: center;
  padding: 32px 16px;
}

.team-card svg {
  margin: 0 auto 16px;
  border-radius: 50%;
  background: #1f2b4a;
  padding: 8px;
}

/* 产品特性图标 */
.feature-icon {
  background: rgba(240, 192, 64, 0.15);
  width: 60px;
  height: 60px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 18px 0;
  cursor: pointer;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  font-weight: 600;
  font-size: 1.1rem;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s, opacity 0.4s;
  opacity: 0;
  padding-top: 8px;
  color: #b0c4dd;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  opacity: 1;
}

.faq-item.active .faq-question span {
  transform: rotate(180deg);
}

/* 合作伙伴 */
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: center;
  align-items: center;
  filter: brightness(0.8);
  opacity: 0.7;
}

/* Footer */
footer {
  background: #070b16;
  padding: 48px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 32px;
}

.footer-grid h4 {
  color: #f0c040;
  margin-bottom: 12px;
}

.footer-grid a {
  color: #8a9bb8;
  display: block;
  margin-bottom: 6px;
}

.copyright {
  text-align: center;
  padding-top: 32px;
  color: #4a5a7a;
  font-size: 0.9rem;
}

/* 响应式 */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 2.4rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
}

/* 滚动动画 */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s, transform 0.7s;
}

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

/* 暗黑模式切换按钮 */
.dark-toggle {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  border-radius: 30px;
  padding: 8px 16px;
  color: #e8edf5;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.3s, color 0.3s;
}

.dark-toggle:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* 返回顶部按钮 */
#backTop {
  position: fixed;
  bottom: 40px;
  right: 40px;
  background: #f0c040;
  color: #0b0e1a;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 24px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  z-index: 200;
  transition: opacity 0.3s, transform 0.2s;
  opacity: 0;
}

#backTop:hover {
  transform: scale(1.1);
}

/* 图片懒加载占位 */
img {
  opacity: 0;
  transition: opacity 0.3s;
}

img.loaded {
  opacity: 1;
}

/* 友情链接区域 */
.footer-links a {
  color: #5a6a8a;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #f0c040;
}

/* 新闻卡片 */
article.card h3 {
  margin-bottom: 8px;
}

/* 表单样式（如果有） */
input, textarea {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 12px 16px;
  color: #e8edf5;
  font-size: 1rem;
  width: 100%;
  transition: border-color 0.3s;
}

input:focus, textarea:focus {
  outline: none;
  border-color: #f0c040;
}

/* 确保SVG图标在亮色模式下可见 */
body.light-mode .feature-icon {
  background: rgba(0, 0, 0, 0.08);
}

body.light-mode .team-card svg {
  background: #e0e6f0;
}

body.light-mode .partner-logos svg rect {
  fill: #e0e6f0;
}

body.light-mode .partner-logos svg text {
  fill: #1a1e2a;
}

/* 其他微调 */
body.light-mode .banner-carousel {
  background: #e8edf5;
}

body.light-mode .faq-item {
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

body.light-mode .stat-label {
  color: #5a6a8a;
}

body.light-mode .hero p {
  color: #4a5a7a;
}

body.light-mode .section-sub {
  color: #5a6a8a;
}
```