/* 乐鱼体育 - 完整样式表 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root { --primary: #1a2a6c; --secondary: #b21f1f; --accent: #fdbb2d; --bg: #ffffff; --text: #1a1a2e; --glass: rgba(255,255,255,0.2); --shadow: 0 8px 32px rgba(0,0,0,0.1); --radius: 20px; }
.dark-mode { --bg: #0d0d1a; --text: #e0e0e0; --glass: rgba(0,0,0,0.4); --shadow: 0 8px 32px rgba(0,0,0,0.5); }
body { font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; transition: background 0.3s, color 0.3s; }
a { color: var(--primary); text-decoration: none; }
img, svg { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
header { position: fixed; top: 0; width: 100%; z-index: 1000; background: var(--glass); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,0.1); transition: background 0.3s; }
nav { display: flex; align-items: center; justify-content: space-between; padding: 15px 20px; max-width: 1200px; margin: 0 auto; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.5rem; font-weight: 700; color: var(--primary); }
.logo svg { width: 40px; height: 40px; }
.nav-links { display: flex; gap: 25px; list-style: none; }
.nav-links a { font-weight: 500; padding: 8px 0; border-bottom: 2px solid transparent; transition: 0.3s; }
.nav-links a:hover, .nav-links a.active { border-bottom-color: var(--accent); color: var(--accent); }
.menu-toggle { display: none; background: none; border: none; font-size: 2rem; cursor: pointer; color: var(--text); }
.dark-toggle { background: none; border: 1px solid var(--text); border-radius: 50%; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; cursor: pointer; font-size: 1.2rem; color: var(--text); transition: 0.3s; }
.dark-toggle:hover { background: var(--primary); color: #fff; }
@media (max-width: 768px) {
    .nav-links { display: none; flex-direction: column; background: var(--glass); backdrop-filter: blur(12px); position: absolute; top: 70px; left: 0; right: 0; padding: 20px; gap: 15px; }
    .nav-links.open { display: flex; }
    .menu-toggle { display: block; }
}
.hero { padding: 140px 20px 80px; text-align: center; background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent)); color: #fff; position: relative; overflow: hidden; }
.hero h1 { font-size: 3rem; margin-bottom: 20px; animation: fadeInUp 1s ease; }
.hero p { font-size: 1.2rem; max-width: 700px; margin: 0 auto 30px; opacity: 0.9; }
.hero .btn { display: inline-block; padding: 15px 40px; background: var(--accent); color: var(--primary); border-radius: 50px; font-weight: 700; font-size: 1.1rem; transition: 0.3s; box-shadow: 0 4px 15px rgba(0,0,0,0.2); }
.hero .btn:hover { transform: scale(1.05); box-shadow: 0 8px 25px rgba(0,0,0,0.3); }
.hero-banner-svg { margin: 30px auto; max-width: 600px; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
section { padding: 80px 20px; }
section h2 { font-size: 2.2rem; text-align: center; margin-bottom: 50px; position: relative; }
section h2::after { content: ''; display: block; width: 60px; height: 4px; background: var(--accent); margin: 10px auto; border-radius: 2px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.card { background: var(--glass); backdrop-filter: blur(8px); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); transition: transform 0.3s, box-shadow 0.3s; border: 1px solid rgba(255,255,255,0.1); }
.card:hover { transform: translateY(-5px); box-shadow: 0 12px 40px rgba(0,0,0,0.15); }
.card svg { width: 60px; height: 60px; margin-bottom: 20px; }
.card h3 { font-size: 1.5rem; margin-bottom: 15px; }
.card p { opacity: 0.8; }
.banner-carousel { position: relative; overflow: hidden; border-radius: var(--radius); margin: 40px 0; }
.banner-slide { display: none; padding: 60px; text-align: center; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; min-height: 300px; align-items: center; justify-content: center; flex-direction: column; }
.banner-slide.active { display: flex; }
.banner-slide h3 { font-size: 2rem; margin-bottom: 15px; }
.banner-slide p { max-width: 600px; }
.carousel-controls { display: flex; justify-content: center; gap: 15px; margin-top: 20px; }
.carousel-controls button { background: var(--primary); color: #fff; border: none; padding: 10px 20px; border-radius: 30px; cursor: pointer; font-size: 1rem; transition: 0.3s; }
.carousel-controls button:hover { background: var(--accent); color: var(--primary); }
.faq-item { border-bottom: 1px solid rgba(255,255,255,0.1); padding: 20px 0; cursor: pointer; }
.faq-question { font-weight: 600; font-size: 1.1rem; display: flex; justify-content: space-between; align-items: center; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; opacity: 0.8; padding-top: 10px; }
.faq-item.open .faq-answer { max-height: 300px; }
.news-card { background: var(--glass); border-radius: var(--radius); padding: 25px; box-shadow: var(--shadow); }
.news-card h4 { font-size: 1.3rem; margin-bottom: 10px; }
.news-card .date { font-size: 0.9rem; opacity: 0.6; margin-bottom: 10px; }
.news-card p { margin-bottom: 15px; }
.news-card .read-more { color: var(--accent); font-weight: 600; }
.howto-steps { counter-reset: step; }
.howto-step { padding: 20px; background: var(--glass); border-radius: var(--radius); margin-bottom: 20px; box-shadow: var(--shadow); display: flex; gap: 20px; align-items: flex-start; }
.howto-step::before { counter-increment: step; content: counter(step); background: var(--accent); color: var(--primary); width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
footer { background: var(--primary); color: #fff; padding: 60px 20px 30px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 30px; margin-bottom: 40px; }
footer h4 { margin-bottom: 20px; font-size: 1.2rem; }
footer ul { list-style: none; }
footer ul li { margin-bottom: 10px; }
footer ul li a { color: rgba(255,255,255,0.7); transition: 0.3s; }
footer ul li a:hover { color: var(--accent); }
.copyright { text-align: center; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; font-size: 0.9rem; opacity: 0.7; }
.back-to-top { position: fixed; bottom: 30px; right: 30px; background: var(--accent); color: var(--primary); width: 50px; height: 50px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; cursor: pointer; box-shadow: var(--shadow); transition: 0.3s; border: none; z-index: 999; }
.back-to-top:hover { transform: scale(1.1); }
.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.6s, transform 0.6s; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }
.stat-number { font-size: 2.5rem; font-weight: 700; color: var(--accent); }
.trust-badges { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; margin: 40px 0; }
.trust-badge { background: var(--glass); border-radius: var(--radius); padding: 20px 30px; text-align: center; backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.1); min-width: 150px; }
.breadcrumb { padding: 100px 20px 20px; max-width: 1200px; margin: 0 auto; font-size: 0.9rem; opacity: 0.7; }
.breadcrumb a { color: var(--text); }
.breadcrumb span { margin: 0 8px; }