/* W6 - 玻璃态现代风格 - 渐变色主题 */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --accent: #f093fb;
    --dark: #1a202c;
    --light: #f7fafc;
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; color: var(--dark); line-height: 1.6; }

/* 导航栏 */
.navbar-glass { position: fixed; top: 0; width: 100%; background: rgba(255, 255, 255, 0.8); backdrop-filter: blur(10px); z-index: 1000; box-shadow: 0 2px 20px rgba(0,0,0,0.1); }
.nav-container { max-width: 1400px; margin: 0 auto; padding: 20px 40px; display: flex; justify-content: space-between; align-items: center; }
.logo-brand { display: flex; align-items: center; gap: 10px; font-size: 24px; font-weight: 900; }
.logo-icon { color: var(--primary); font-size: 28px; }
.nav-menu { display: flex; list-style: none; gap: 35px; }
.nav-menu a { color: var(--dark); text-decoration: none; font-weight: 600; transition: color 0.3s; }
.nav-menu a:hover { color: var(--primary); }
.nav-actions { display: flex; gap: 15px; }
.btn-login { padding: 10px 25px; border: 2px solid var(--primary); color: var(--primary); text-decoration: none; border-radius: 8px; font-weight: 600; transition: all 0.3s; }
.btn-login:hover { background: var(--primary); color: white; }
.btn-signup { padding: 10px 25px; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white; text-decoration: none; border-radius: 8px; font-weight: 600; transition: all 0.3s; }
.btn-signup:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4); }

/* Hero区域 */
.hero-gradient { padding: 150px 40px 100px; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; }
.hero-content-wrapper { max-width: 1400px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.badge-trust { display: inline-block; background: rgba(255,255,255,0.2); padding: 8px 20px; border-radius: 20px; font-size: 14px; margin-bottom: 25px; }
.hero-main-title { font-size: 56px; font-weight: 900; line-height: 1.2; margin-bottom: 25px; }
.hero-description { font-size: 18px; line-height: 1.8; margin-bottom: 30px; opacity: 0.95; }
.hero-features-list { display: flex; gap: 15px; margin-bottom: 40px; flex-wrap: wrap; }
.feature-tag { background: rgba(255,255,255,0.2); padding: 8px 16px; border-radius: 20px; font-size: 14px; }
.hero-cta-buttons { display: flex; gap: 20px; margin-bottom: 40px; }
.btn-primary-large { padding: 18px 45px; background: white; color: var(--primary); text-decoration: none; border-radius: 12px; font-weight: 700; font-size: 16px; transition: all 0.3s; }
.btn-primary-large:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(0,0,0,0.3); }
.btn-secondary-large { padding: 18px 45px; border: 2px solid white; color: white; text-decoration: none; border-radius: 12px; font-weight: 700; font-size: 16px; transition: all 0.3s; }
.btn-secondary-large:hover { background: white; color: var(--primary); }
.trust-indicators { display: flex; gap: 30px; }
.trust-item { display: flex; align-items: center; gap: 10px; }
.trust-icon { font-size: 24px; }
.stats-dashboard { display: grid; gap: 20px; }
.stat-card { background: rgba(255,255,255,0.15); backdrop-filter: blur(10px); padding: 30px; border-radius: 15px; border: 1px solid rgba(255,255,255,0.2); }
.stat-card h3 { font-size: 42px; font-weight: 900; margin-bottom: 10px; }
.stat-card p { font-size: 16px; margin-bottom: 8px; }
.stat-trend { font-size: 13px; opacity: 0.8; }

/* 产品服务 */
.products-comprehensive { padding: 100px 40px; background: var(--light); }
.section-container { max-width: 1400px; margin: 0 auto; }
.section-header-center { text-align: center; margin-bottom: 60px; }
.section-label { display: inline-block; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white; padding: 6px 20px; border-radius: 20px; font-size: 14px; margin-bottom: 15px; }
.section-title { font-size: 42px; font-weight: 800; margin-bottom: 15px; }
.section-subtitle { font-size: 18px; color: #666; }
.products-showcase { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; }
.product-card-large { background: white; padding: 40px; border-radius: 20px; box-shadow: 0 10px 40px rgba(0,0,0,0.08); position: relative; transition: all 0.3s; }
.product-card-large:hover { transform: translateY(-10px); box-shadow: 0 20px 60px rgba(0,0,0,0.15); }
.product-card-large.featured { border: 2px solid var(--primary); }
.product-badge { position: absolute; top: 20px; right: 20px; background: var(--primary); color: white; padding: 6px 15px; border-radius: 15px; font-size: 12px; font-weight: 600; }
.product-badge.hot { background: #ff6b6b; }
.product-icon { font-size: 48px; margin-bottom: 20px; }
.product-card-large h3 { font-size: 28px; margin-bottom: 15px; }
.product-desc { color: #666; font-size: 16px; line-height: 1.7; margin-bottom: 25px; }
.product-features { list-style: none; margin-bottom: 25px; }
.product-features li { padding: 10px 0; color: #555; font-size: 15px; }
.product-stats { display: flex; gap: 20px; margin-bottom: 25px; padding-top: 20px; border-top: 1px solid #e0e0e0; }
.product-stats span { font-size: 13px; color: #888; }
.btn-product { display: inline-block; color: var(--primary); text-decoration: none; font-weight: 700; font-size: 16px; transition: all 0.3s; }
.btn-product:hover { margin-left: 10px; }
.product-card-medium { background: white; padding: 35px; border-radius: 15px; box-shadow: 0 8px 30px rgba(0,0,0,0.06); transition: all 0.3s; }
.product-card-medium:hover { transform: translateY(-8px); box-shadow: 0 15px 45px rgba(0,0,0,0.12); }

/* 市场行情 */
.market-overview { padding: 100px 40px; background: white; }
.market-tabs { display: flex; justify-content: center; gap: 20px; margin-bottom: 40px; }
.market-tab { padding: 12px 30px; background: transparent; border: 2px solid #e0e0e0; border-radius: 25px; font-size: 16px; font-weight: 600; color: #666; cursor: pointer; transition: all 0.3s; }
.market-tab.active { background: var(--primary); color: white; border-color: var(--primary); }
.market-table { background: white; border-radius: 15px; overflow: hidden; box-shadow: 0 5px 20px rgba(0,0,0,0.08); }
.market-row { display: grid; grid-template-columns: 2fr 1.5fr 1.2fr 1.5fr 1fr; padding: 20px 30px; border-bottom: 1px solid #f0f0f0; align-items: center; }
.market-row.header { background: var(--light); font-weight: 700; color: var(--dark); }
.coin-name { font-weight: 600; color: var(--dark); }
.price { font-weight: 700; font-size: 16px; }
.change { font-weight: 600; }
.change.positive { color: #00c853; }
.change.negative { color: #ff5252; }
.volume { color: #666; font-size: 14px; }
.action a { color: var(--primary); text-decoration: none; font-weight: 600; }
.market-footer { text-align: center; margin-top: 40px; }
.btn-view-all { display: inline-block; padding: 15px 40px; border: 2px solid var(--primary); color: var(--primary); text-decoration: none; border-radius: 10px; font-weight: 600; transition: all 0.3s; }
.btn-view-all:hover { background: var(--primary); color: white; }

/* 学习中心 */
.learning-center { padding: 100px 40px; background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%); }
.learning-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; margin-bottom: 60px; }
.learning-card { background: white; padding: 40px; border-radius: 20px; box-shadow: 0 10px 40px rgba(0,0,0,0.1); transition: all 0.3s; }
.learning-card:hover { transform: translateY(-10px); box-shadow: 0 20px 60px rgba(0,0,0,0.15); }
.learning-level { display: inline-block; padding: 6px 15px; border-radius: 15px; font-size: 12px; font-weight: 700; margin-bottom: 20px; }
.learning-card.beginner .learning-level { background: #e3f2fd; color: #1976d2; }
.learning-card.intermediate .learning-level { background: #fff3e0; color: #f57c00; }
.learning-card.advanced .learning-level { background: #f3e5f5; color: #7b1fa2; }
.learning-card h3 { font-size: 26px; margin-bottom: 15px; }
.learning-card p { color: #666; font-size: 16px; line-height: 1.7; margin-bottom: 25px; }
.learning-topics { list-style: none; margin-bottom: 25px; }
.learning-topics li { padding: 10px 0; color: #555; font-size: 15px; border-bottom: 1px solid #f0f0f0; }
.learning-meta { display: flex; gap: 20px; margin-bottom: 25px; padding-top: 20px; border-top: 1px solid #e0e0e0; }
.learning-meta span { font-size: 14px; color: #888; }
.btn-learn { display: inline-block; padding: 12px 30px; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white; text-decoration: none; border-radius: 10px; font-weight: 600; transition: all 0.3s; }
.btn-learn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4); }
.video-tutorials { margin-top: 60px; }
.video-tutorials h3 { font-size: 32px; margin-bottom: 30px; text-align: center; }
.video-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 25px; }
.video-card { background: white; padding: 25px; border-radius: 15px; box-shadow: 0 5px 20px rgba(0,0,0,0.08); transition: all 0.3s; }
.video-card:hover { transform: translateY(-5px); }
.video-thumb { font-size: 60px; text-align: center; margin-bottom: 15px; }
.video-card h4 { font-size: 18px; margin-bottom: 10px; }
.video-card p { color: #666; font-size: 14px; margin-bottom: 10px; }
.video-duration { display: inline-block; background: #f0f0f0; padding: 4px 10px; border-radius: 10px; font-size: 12px; color: #666; }

/* 支持中心 */
.support-section { padding: 100px 40px; background: white; }
.support-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; margin-bottom: 60px; }
.support-card { background: var(--light); padding: 40px; border-radius: 15px; text-align: center; transition: all 0.3s; }
.support-card:hover { transform: translateY(-8px); box-shadow: 0 15px 40px rgba(0,0,0,0.1); }
.support-icon { font-size: 56px; margin-bottom: 20px; }
.support-card h3 { font-size: 22px; margin-bottom: 15px; }
.support-card p { color: #666; font-size: 15px; margin-bottom: 25px; }
.btn-support { display: inline-block; padding: 12px 30px; background: var(--primary); color: white; text-decoration: none; border-radius: 10px; font-weight: 600; transition: all 0.3s; }
.btn-support:hover { background: var(--secondary); }
.faq-section h3 { font-size: 32px; margin-bottom: 30px; text-align: center; }
.faq-grid { display: grid; gap: 20px; max-width: 900px; margin: 0 auto; }
.faq-item { background: var(--light); padding: 25px; border-radius: 12px; }
.faq-item summary { font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; }
.faq-item p { margin-top: 15px; color: #666; line-height: 1.8; }

/* APP下载 */
.app-download-section { padding: 100px 40px; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white; }
.app-content { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.app-left h2 { font-size: 48px; font-weight: 900; margin-bottom: 20px; }
.app-left p { font-size: 20px; margin-bottom: 30px; opacity: 0.95; }
.app-features { list-style: none; margin-bottom: 40px; }
.app-features li { padding: 12px 0; font-size: 16px; }
.app-download-buttons { display: flex; gap: 20px; margin-bottom: 40px; }
.app-btn { display: flex; align-items: center; gap: 15px; background: rgba(255,255,255,0.2); backdrop-filter: blur(10px); padding: 15px 25px; border-radius: 12px; text-decoration: none; color: white; transition: all 0.3s; }
.app-btn:hover { background: rgba(255,255,255,0.3); transform: translateY(-3px); }
.app-icon { font-size: 40px; }
.app-text small { display: block; font-size: 11px; margin-bottom: 3px; }
.app-text strong { font-size: 16px; }
.qr-code-section { text-align: center; }
.qr-code { font-size: 100px; margin-bottom: 15px; }
.app-mockup { font-size: 300px; text-align: center; }

/* Footer */
.footer-comprehensive { background: #1a202c; color: white; padding: 80px 40px 30px; }
.footer-container { max-width: 1400px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 50px; }
.footer-col.about h3 { font-size: 24px; margin-bottom: 15px; }
.footer-col.about p { color: #a0aec0; line-height: 1.8; margin-bottom: 25px; }
.footer-stats { display: flex; gap: 30px; }
.footer-stats div { text-align: center; }
.footer-stats strong { display: block; font-size: 24px; color: var(--accent); }
.footer-stats span { font-size: 12px; color: #a0aec0; }
.footer-col h4 { margin-bottom: 20px; color: var(--accent); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 12px; }
.footer-col a { color: #a0aec0; text-decoration: none; transition: color 0.3s; }
.footer-col a:hover { color: white; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 30px; border-top: 1px solid #2d3748; }
.footer-copyright p { color: #a0aec0; font-size: 14px; margin-bottom: 8px; }
.risk-warning { font-size: 12px !important; opacity: 0.7; }
.footer-social { display: flex; gap: 20px; }
.footer-social a { color: #a0aec0; text-decoration: none; transition: color 0.3s; }
.footer-social a:hover { color: var(--accent); }

/* 响应式 */
@media (max-width: 768px) {
    .nav-menu { display: none; }
    .hero-content-wrapper, .app-content { grid-template-columns: 1fr; }
    .hero-main-title { font-size: 36px; }
    .products-showcase, .learning-grid { grid-template-columns: 1fr; }
    .market-row { grid-template-columns: 1fr; gap: 10px; }
    .footer-grid { grid-template-columns: 1fr; }
}