```css
/* 全局重置与基础 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif; background: #f0f2f5; color: #1a1a2e; line-height: 1.6; transition: background 0.3s, color 0.3s; }
body.dark-mode { background: #0f0f1a; color: #e0e0e0; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; height: auto; }
button { cursor: pointer; font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* 玻璃拟态通用 */
.glass { background: rgba(255,255,255,0.25); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.18); border-radius: 20px; box-shadow: 0 8px 32px rgba(0,0,0,0.1); }
.dark-mode .glass { background: rgba(20,20,40,0.5); border-color: rgba(255,255,255,0.08); }

/* 渐变背景 */
.gradient-bg { background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%); }
.dark-mode .gradient-bg { background: linear-gradient(135deg, #0a0a14 0%, #0f1a2e 50%, #0a1f3a 100%); }

/* 导航 */
.navbar { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; padding: 12px 0; transition: all 0.4s ease; background: rgba(26,26,46,0.8); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(255,255,255,0.05); }
.navbar.sticky { background: rgba(26,26,46,0.95); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.5rem; font-weight: 700; color: #f0c040; }
.logo svg { width: 40px; height: 40px; }
.nav-links { display: flex; gap: 28px; list-style: none; font-weight: 500; }
.nav-links a { color: #fff; opacity: 0.8; transition: 0.3s; position: relative; }
.nav-links a:hover, .nav-links a.active { opacity: 1; color: #f0c040; }
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: #f0c040; transition: 0.3s; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-right { display: flex; align-items: center; gap: 16px; }
.search-box { display: flex; align-items: center; background: rgba(255,255,255,0.1); border-radius: 30px; padding: 4px 12px; }
.search-box input { background: transparent; border: none; outline: none; color: #fff; padding: 6px 8px; width: 120px; font-size: 0.9rem; }
.search-box input::placeholder { color: rgba(255,255,255,0.5); }
.search-box button { background: transparent; border: none; color: #f0c040; font-size: 1.2rem; }
.dark-mode-toggle { background: rgba(255,255,255,0.1); border: none; border-radius: 50%; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; color: #f0c040; font-size: 1.2rem; transition: 0.3s; }
.dark-mode-toggle:hover { background: rgba(255,255,255,0.2); }
.menu-toggle { display: none; background: transparent; border: none; color: #fff; font-size: 1.8rem; }
.mobile-menu { display: none; flex-direction: column; background: rgba(26,26,46,0.98); backdrop-filter: blur(20px); padding: 20px; border-radius: 16px; margin-top: 12px; list-style: none; }
.mobile-menu.open { display: flex; }
.mobile-menu li { padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
.mobile-menu a { color: #fff; font-weight: 500; }

/* 面包屑 */
.breadcrumb { padding: 100px 0 20px; font-size: 0.85rem; color: rgba(255,255,255,0.6); }
.breadcrumb span { margin: 0 6px; }
.breadcrumb a { color: #f0c040; }

/* Banner */
.banner { position: relative; overflow: hidden; min-height: 80vh; display: flex; align-items: center; justify-content: center; }
.banner-slide { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.8s ease; background: linear-gradient(135deg, #1a1a2e, #0f3460); }
.banner-slide.active { opacity: 1; }
.banner-content { text-align: center; color: #fff; padding: 40px 20px; max-width: 800px; }
.banner-content h1 { font-size: 3.2rem; font-weight: 800; margin-bottom: 20px; text-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.banner-content p { font-size: 1.2rem; opacity: 0.9; margin-bottom: 30px; }
.banner-btn { display: inline-block; padding: 14px 40px; background: #f0c040; color: #1a1a2e; border-radius: 40px; font-weight: 700; font-size: 1.1rem; transition: 0.3s; border: none; }
.banner-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(240,192,64,0.3); }
.banner-dots { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; gap: 12px; }
.banner-dots span { width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,0.3); cursor: pointer; transition: 0.3s; }
.banner-dots span.active { background: #f0c040; transform: scale(1.2); }

/* 通用section */
section { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 { font-size: 2.4rem; font-weight: 700; position: relative; display: inline-block; }
.section-title h2::after { content: ''; display: block; width: 60px; height: 4px; background: #f0c040; margin: 12px auto 0; border-radius: 4px; }
.section-title p { color: #666; margin-top: 10px; font-size: 1.05rem; }
.dark-mode .section-title p { color: #aaa; }

/* 卡片网格 */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; }
.card { background: #fff; border-radius: 24px; padding: 30px; box-shadow: 0 10px 40px rgba(0,0,0,0.06); transition: all 0.4s ease; border: 1px solid rgba(0,0,0,0.02); }
.card:hover { transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,0,0,0.1); }
.dark-mode .card { background: #1a1a2e; border-color: rgba(255,255,255,0.05); box-shadow: 0 10px 40px rgba(0,0,0,0.3); }
.card-icon { width: 60px; height: 60px; margin-bottom: 16px; }
.card h3 { font-size: 1.3rem; font-weight: 600; margin-bottom: 10px; }
.card p { color: #555; font-size: 0.95rem; }
.dark-mode .card p { color: #bbb; }

/* 数字增长 */
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; text-align: center; }
.stat-item .number { font-size: 2.8rem; font-weight: 800; color: #f0c040; }
.stat-item .label { color: rgba(255,255,255,0.8); margin-top: 6px; }

/* 时间线 */
.timeline { position: relative; padding-left: 40px; }
.timeline::before { content: ''; position: absolute; left: 16px; top: 0; bottom: 0; width: 3px; background: #f0c040; border-radius: 4px; }
.timeline-item { position: relative; margin-bottom: 40px; padding-left: 30px; }
.timeline-item::before { content: ''; position: absolute; left: -24px; top: 6px; width: 16px; height: 16px; background: #f0c040; border-radius: 50%; border: 3px solid #1a1a2e; }
.timeline-item h4 { font-weight: 700; font-size: 1.1rem; }
.timeline-item span { display: block; color: #f0c040; font-weight: 600; margin-bottom: 4px; }

/* FAQ */
.faq-item { border-bottom: 1px solid rgba(0,0,0,0.06); padding: 18px 0; }
.dark-mode .faq-item { border-color: rgba(255,255,255,0.06); }
.faq-question { display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1.05rem; cursor: pointer; }
.faq-question .icon { font-size: 1.4rem; transition: 0.3s; }
.faq-answer { max-height: 0; overflow: hidden; transition: 0.4s ease; color: #555; }
.dark-mode .faq-answer { color: #bbb; }
.faq-item.open .faq-answer { max-height: 300px; padding-top: 12px; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); }

/* 评价 */
.testimonial-card { background: #fff; border-radius: 24px; padding: 30px; box-shadow: 0 10px 30px rgba(0,0,0,0.04); }
.dark-mode .testimonial-card { background: #1a1a2e; }
.testimonial-card .stars { color: #f0c040; margin-bottom: 12px; }
.testimonial-card p { font-style: italic; }

/* 合作伙伴 */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 40px; align-items: center; }
.partner-item { opacity: 0.6; transition: 0.3s; }
.partner-item:hover { opacity: 1; }

/* 新闻/文章卡片 */
.article-card { background: #fff; border-radius: 24px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.04); transition: 0.4s; }
.dark-mode .article-card { background: #1a1a2e; }
.article-card:hover { transform: translateY(-4px); box-shadow: 0 20px 50px rgba(0,0,0,0.1); }
.article-card .content { padding: 20px; }
.article-card .date { font-size: 0.85rem; color: #888; }
.article-card h3 { font-size: 1.15rem; margin: 8px 0; }
.article-card p { color: #555; font-size: 0.9rem; }
.dark-mode .article-card p { color: #aaa; }
.article-card .read-more { color: #f0c040; font-weight: 600; display: inline-block; margin-top: 12px; }

/* HowTo */
.howto-step { display: flex; gap: 20px; margin-bottom: 24px; align-items: flex-start; }
.howto-step .step-num { width: 40px; height: 40px; background: #f0c040; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; color: #1a1a2e; flex-shrink: 0; }
.howto-step .step-content h4 { font-weight: 600; margin-bottom: 4px; }

/* 团队 */
.team-card { text-align: center; background: #fff; border-radius: 24px; padding: 30px 20px; box-shadow: 0 10px 30px rgba(0,0,0,0.04); }
.dark-mode .team-card { background: #1a1a2e; }
.team-card .avatar { width: 100px; height: 100px; border-radius: 50%; margin: 0 auto 16px; }
.team-card h4 { font-weight: 700; }
.team-card .role { color: #f0c040; font-weight: 500; }

/* 联系我们 */
.contact-info p { margin: 8px 0; display: flex; align-items: center; gap: 10px; }
.contact-info svg { width: 24px; height: 24px; flex-shrink: 0; }

/* footer */
footer { background: #0f0f1a; color: rgba(255,255,255,0.7); padding: 50px 0 20px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 30px; margin-bottom: 30px; }
.footer-grid h4 { color: #fff; margin-bottom: 16px; font-weight: 600; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { opacity: 0.7; transition: 0.3s; }
.footer-grid a:hover { opacity: 1; color: #f0c040; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; font-size: 0.85rem; }
.footer-bottom a { color: #f0c040; }

/* 返回顶部 */
.back-to-top { position: fixed; bottom: 30px; right: 30px; width: 50px; height: 50px; background: #f0c040; border: none; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: #1a1a2e; box-shadow: 0 8px 20px rgba(240,192,64,0.3); opacity: 0; visibility: hidden; transition: 0.3s; z-index: 999; }
.back-to-top.visible { opacity: 1; visibility: visible; }

/* 动画 */
.fade-up { opacity: 0; transform: translateY(30px); transition: 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* 响应式 */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .menu-toggle { display: block; }
    .search-box input { width: 80px; }
    .banner-content h1 { font-size: 2rem; }
    .stats-grid { grid-template-columns: repeat(2,1fr); }
    .grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    .container { padding: 0 12px; }
    .banner-content h1 { font-size: 1.6rem; }
    .stats-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}
```