* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; color: #1f2937; line-height: 1.6; overflow-x: hidden; }
.navbar { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; transition: all 0.3s ease; padding: 16px 0; background: transparent; }
.navbar.scrolled { background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); box-shadow: 0 2px 20px rgba(0,0,0,0.08); padding: 10px 0; }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; justify-content: space-between; align-items: center; }
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; font-size: 1.35rem; font-weight: 700; transition: color 0.3s; }
.navbar.scrolled .nav-logo { color: #1f2937; }
.nav-logo i { font-size: 1.6rem; }
.nav-links { display: flex; gap: 28px; align-items: center; list-style: none; }
.nav-links a { text-decoration: none; color: rgba(255,255,255,0.9); font-weight: 500; font-size: 0.95rem; transition: color 0.3s; }
.navbar.scrolled .nav-links a { color: #4b5563; }
.nav-links a:hover { color: #6366f1; }
.nav-cta { background: #6366f1; color: #fff !important; padding: 8px 20px; border-radius: 9999px; font-weight: 600 !important; transition: all 0.3s !important; }
.nav-cta:hover { background: #4f46e5; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(99,102,241,0.4); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.hamburger span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 2px; transition: all 0.3s; }
.navbar.scrolled .hamburger span { background: #1f2937; }
@media (max-width: 768px) {
  .nav-links { position: fixed; top: 0; right: -100%; width: 260px; height: 100vh; background: #fff; flex-direction: column; padding: 80px 32px 32px; gap: 20px; transition: right 0.3s; box-shadow: -5px 0 30px rgba(0,0,0,0.1); }
  .nav-links.active { right: 0; }
  .nav-links a { color: #374151 !important; font-size: 1.05rem; }
  .hamburger { display: flex; z-index: 1001; }
}
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; background: linear-gradient(135deg, #312e81 0%, #4338ca 40%, #6366f1 70%, #818cf8 100%); overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -50%; right: -20%; width: 700px; height: 700px; border-radius: 50%; background: rgba(255,255,255,0.05); }
.hero::after { content: ''; position: absolute; bottom: -30%; left: -10%; width: 500px; height: 500px; border-radius: 50%; background: rgba(255,255,255,0.04); }
.hero-svg { position: absolute; bottom: 0; left: 0; width: 100%; }
.hero-container { max-width: 1200px; margin: 0 auto; padding: 120px 24px 80px; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
.hero-text h1 { font-size: 3.2rem; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 20px; }
.hero-text p { font-size: 1.15rem; color: rgba(255,255,255,0.85); margin-bottom: 32px; line-height: 1.7; max-width: 480px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary { display: inline-block; background: #fff; color: #4338ca; padding: 14px 32px; border-radius: 9999px; font-weight: 700; font-size: 1rem; text-decoration: none; transition: all 0.3s; box-shadow: 0 8px 25px rgba(0,0,0,0.15); }
.btn-primary:hover { transform: translateY(-3px) scale(1.03); box-shadow: 0 14px 35px rgba(0,0,0,0.2); }
.btn-secondary { display: inline-block; background: transparent; color: #fff; padding: 14px 32px; border-radius: 9999px; font-weight: 700; font-size: 1rem; text-decoration: none; border: 2px solid rgba(255,255,255,0.5); transition: all 0.3s; }
.btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: translateY(-3px); }
.hero-image img { width: 100%; border-radius: 20px; box-shadow: 0 25px 60px rgba(0,0,0,0.25); transition: transform 0.5s; }
.hero-image img:hover { transform: translateY(-8px); }
@media (max-width: 768px) {
  .hero-container { grid-template-columns: 1fr; text-align: center; padding-top: 100px; }
  .hero-text h1 { font-size: 2.1rem; }
  .hero-text p { max-width: 100%; font-size: 1rem; }
  .hero-btns { justify-content: center; }
  .hero-image { margin-top: 20px; }
}
.section { padding: 90px 24px; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: 2.4rem; font-weight: 800; color: #1f2937; margin-bottom: 12px; }
.section-header p { font-size: 1.05rem; color: #6b7280; max-width: 600px; margin: 0 auto; }
.container { max-width: 1200px; margin: 0 auto; }
.features-bg { background: #f9fafb; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card { background: #fff; border-radius: 20px; padding: 36px 28px; text-align: center; box-shadow: 0 2px 15px rgba(0,0,0,0.05); transition: all 0.35s; border: 1px solid #f3f4f6; }
.feature-card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px rgba(99,102,241,0.12); border-color: #e0e7ff; }
.feature-icon { width: 64px; height: 64px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 1.6rem; color: #fff; background: linear-gradient(135deg, #6366f1, #818cf8); }
.feature-card h3 { font-size: 1.18rem; font-weight: 700; margin-bottom: 10px; color: #1f2937; }
.feature-card p { font-size: 0.92rem; color: #6b7280; line-height: 1.6; }
@media (max-width: 768px) { .features-grid { grid-template-columns: 1fr; } }
.stats-bg { background: linear-gradient(135deg, #312e81, #4338ca); color: #fff; text-align: center; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat-item h3 { font-size: 2.8rem; font-weight: 800; margin-bottom: 6px; }
.stat-item p { font-size: 1rem; opacity: 0.85; }
@media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; } }
.testimonials-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.testimonial-card { background: #fff; border-radius: 20px; padding: 28px; box-shadow: 0 2px 15px rgba(0,0,0,0.05); border: 1px solid #f3f4f6; transition: all 0.3s; }
.testimonial-card:hover { box-shadow: 0 12px 30px rgba(0,0,0,0.08); transform: translateY(-4px); }
.testimonial-header { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.testimonial-header img { width: 50px; height: 50px; border-radius: 50%; object-fit: cover; }
.testimonial-header h4 { font-size: 1.05rem; font-weight: 700; }
.testimonial-header span { font-size: 0.85rem; color: #9ca3af; }
.stars { color: #f59e0b; margin-bottom: 10px; }
.testimonial-text { font-size: 0.93rem; color: #6b7280; line-height: 1.7; }
@media (max-width: 768px) { .testimonials-grid { grid-template-columns: 1fr; } }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: #fff; border-radius: 16px; margin-bottom: 14px; box-shadow: 0 2px 10px rgba(0,0,0,0.04); border: 1px solid #f3f4f6; overflow: hidden; transition: all 0.3s; }
.faq-item.active { border-color: #c7d2fe; box-shadow: 0 8px 25px rgba(99,102,241,0.08); }
.faq-question { width: 100%; text-align: left; padding: 20px 24px; background: none; border: none; font-size: 1.02rem; font-weight: 600; color: #1f2937; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq-question i { transition: transform 0.3s; color: #6366f1; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 24px 20px; color: #6b7280; font-size: 0.93rem; line-height: 1.7; }
.cta-section { text-align: center; padding: 100px 24px; background: linear-gradient(135deg, #4338ca, #6366f1); color: #fff; }
.cta-section h2 { font-size: 2.5rem; font-weight: 800; margin-bottom: 16px; }
.cta-section p { font-size: 1.1rem; opacity: 0.9; margin-bottom: 32px; }
.cta-section .btn-primary { background: #fff; color: #4338ca; font-size: 1.1rem; padding: 16px 40px; }
.footer { background: #111827; color: #d1d5db; padding: 60px 24px 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; max-width: 1200px; margin: 0 auto; }
.footer-col h4 { color: #fff; font-weight: 700; margin-bottom: 16px; font-size: 1.05rem; }
.footer-col p, .footer-col a { font-size: 0.9rem; color: #9ca3af; line-height: 2; text-decoration: none; display: block; transition: color 0.3s; }
.footer-col a:hover { color: #818cf8; }
.footer-bottom { border-top: 1px solid #1f2937; margin-top: 40px; padding-top: 24px; text-align: center; font-size: 0.85rem; color: #6b7280; max-width: 1200px; margin-left: auto; margin-right: auto; }
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }
.back-to-top { position: fixed; bottom: 28px; right: 28px; width: 46px; height: 46px; border-radius: 50%; background: #6366f1; color: #fff; border: none; cursor: pointer; font-size: 1.1rem; box-shadow: 0 4px 15px rgba(99,102,241,0.4); opacity: 0; pointer-events: none; transition: all 0.3s; z-index: 999; }
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { background: #4f46e5; transform: translateY(-3px); }
.download-card { background: #fff; border-radius: 20px; padding: 32px; text-align: center; box-shadow: 0 4px 20px rgba(0,0,0,0.06); transition: all 0.3s; border: 1px solid #f3f4f6; }
.download-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(37,99,235,0.12); }
.download-card i { font-size: 2.5rem; color: #6366f1; margin-bottom: 16px; }
.club-card { background: #fff; border-radius: 20px; padding: 32px; box-shadow: 0 4px 20px rgba(0,0,0,0.05); border: 1px solid #f3f4f6; transition: all 0.3s; }
.club-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(99,102,241,0.1); border-color: #e0e7ff; }
.club-card .club-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: #fff; margin-bottom: 16px; }
.badge { display: inline-block; padding: 6px 14px; border-radius: 9999px; font-size: 0.82rem; font-weight: 600; }
.badge-indigo { background: #eef2ff; color: #4338ca; }