:/* 九游官网 style.css - 完整样式文件 */
:root {
  --primary: #6c63ff;
  --primary-dark: #4a42d4;
  --secondary: #00d4aa;
  --accent: #ff6b6b;
  --bg: #f8f9fe;
  --bg-dark: #0f0f1a;
  --card: #ffffff;
  --card-dark: #1a1a2e;
  --text: #2d2d44;
  --text-dark: #e0e0f0;
  --glass: rgba(255,255,255,0.25);
  --shadow: 0 8px 32px rgba(108,99,255,0.12);
  --shadow-hover: 0 16px 48px rgba(108,99,255,0.25);
  --radius: 24px;
  --radius-sm: 12px;
  --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}
body.dark-mode {
  background: var(--bg-dark);
  color: var(--text-dark);
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--secondary); }
img, svg { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { padding: 80px 0; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
h2 { font-size: 2.4rem; margin-bottom: 48px; text-align: center; }
h2 span { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 50px; border: none;
  font-weight: 600; font-size: 1rem; cursor: pointer;
  transition: all var(--transition); background: var(--primary); color: #fff;
  box-shadow: 0 4px 16px rgba(108,99,255,0.3);
}
.btn:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); background: var(--primary-dark); color: #fff; }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.card {
  background: var(--card); border-radius: var(--radius); padding: 32px;
  box-shadow: var(--shadow); transition: all var(--transition);
  backdrop-filter: blur(12px);
}
body.dark-mode .card { background: var(--card-dark); }
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.glass {
  background: var(--glass); backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
}
/* Header & Navigation */
header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(248,249,254,0.8); backdrop-filter: blur(20px);
  transition: background var(--transition), box-shadow var(--transition);
}
body.dark-mode header { background: rgba(15,15,26,0.85); }
header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; max-width: 1200px; margin: 0 auto;
}
.logo { display: flex; align-items: center; gap: 12px; font-size: 1.4rem; font-weight: 800; color: var(--primary); }
.logo svg { width: 40px; height: 40px; }
.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-links a {
  padding: 8px 16px; border-radius: 50px; font-weight: 500;
  color: var(--text); transition: all var(--transition);
  position: relative; font-size: 0.95rem;
}
body.dark-mode .nav-links a { color: var(--text-dark); }
.nav-links a:hover, .nav-links a.active { background: var(--primary); color: #fff; }
.mobile-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.mobile-toggle span { width: 28px; height: 3px; background: var(--text); border-radius: 4px; transition: all var(--transition); }
body.dark-mode .mobile-toggle span { background: var(--text-dark); }
.dark-toggle { background: none; border: none; font-size: 1.5rem; cursor: pointer; padding: 8px; color: var(--text); transition: color var(--transition); }
body.dark-mode .dark-toggle { color: var(--text-dark); }
/* Hero */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  background: linear-gradient(135deg, #f0f0ff 0%, #e8f4fd 50%, #fce4ec 100%);
  position: relative; overflow: hidden; padding-top: 80px;
}
body.dark-mode .hero { background: linear-gradient(135deg, #0f0f1a 0%, #1a1a3e 50%, #2d1b2e 100%); }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-content h1 { font-size: 3.4rem; margin-bottom: 20px; }
.hero-content p { font-size: 1.2rem; opacity: 0.8; margin-bottom: 32px; max-width: 540px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; display: flex; justify-content: center; }
.hero-visual svg { width: 100%; max-width: 500px; height: auto; }
/* Brand Section */
.brand-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 32px; }
.brand-item { text-align: center; padding: 32px; }
.brand-item svg { width: 64px; height: 64px; margin: 0 auto 16px; }
.brand-item h3 { margin-bottom: 12px; }
/* Products */
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: 32px; }
.product-card { text-align: center; }
.product-card svg { width: 80px; height: 80px; margin: 0 auto 16px; }
/* Trust */
.trust-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: 32px; }
.trust-card { text-align: center; }
.trust-card svg { width: 56px; height: 56px; margin: 0 auto 16px; }
/* News */
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: 32px; }
.news-card { padding: 24px; }
.news-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.news-card .meta { font-size: 0.85rem; opacity: 0.6; margin-bottom: 12px; }
/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid rgba(0,0,0,0.08); padding: 16px 0; cursor: pointer; }
body.dark-mode .faq-item { border-color: rgba(255,255,255,0.08); }
.faq-question { display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1.1rem; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding-top: 8px; opacity: 0.8; }
.faq-item.open .faq-answer { max-height: 300px; }
/* Footer */
footer { background: var(--card); padding: 60px 0 30px; margin-top: 40px; }
body.dark-mode footer { background: var(--card-dark); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 40px; margin-bottom: 40px; }
.footer-col h4 { margin-bottom: 16px; font-size: 1.1rem; }
.footer-col a, .footer-col p { display: block; margin-bottom: 8px; opacity: 0.8; font-size: 0.95rem; }
.footer-bottom { border-top: 1px solid rgba(0,0,0,0.06); padding-top: 24px; text-align: center; font-size: 0.9rem; opacity: 0.7; }
body.dark-mode .footer-bottom { border-color: rgba(255,255,255,0.06); }
/* Back to top */
.back-to-top {
  position: fixed; bottom: 40px; right: 40px; width: 48px; height: 48px;
  border-radius: 50%; background: var(--primary); color: #fff; border: none;
  font-size: 1.5rem; cursor: pointer; box-shadow: var(--shadow);
  opacity: 0; transform: translateY(20px); transition: all var(--transition);
  z-index: 999;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
/* Breadcrumb */
.breadcrumb { padding: 16px 0; font-size: 0.9rem; opacity: 0.7; }
.breadcrumb a { color: var(--primary); }
.breadcrumb span { margin: 0 6px; }
/* Scroll animation */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
/* Mobile */
@media(max-width:768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background: var(--card); padding: 20px; box-shadow: var(--shadow); }
  body.dark-mode .nav-links { background: var(--card-dark); }
  .nav-links.open { display: flex; }
  .mobile-toggle { display: flex; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-content h1 { font-size: 2.4rem; }
  .hero-buttons { justify-content: center; }
  h2 { font-size: 1.8rem; }
  .back-to-top { right: 20px; bottom: 20px; width: 40px; height: 40px; font-size: 1.2rem; }
}
@media(max-width:480px) {
  .container { padding: 0 16px; }
  section { padding: 48px 0; }
  .hero-content h1 { font-size: 1.8rem; }
}