:root {
  --bg-dark: #121212;
  --bg-light: #1e1e24;
  --brand-yellow: #fbc02d;
  --brand-orange: #f57c00;
  --text-main: #e0e0e0;
  --text-muted: #9e9e9e;
  --border-color: #333;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(0,0,0,0.4);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; object-fit: cover; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(18, 18, 18, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo-area { display: flex; align-items: center; gap: 8px; }
.logo-area img { height: 32px; width: auto; border-radius: 6px; }
.logo-area span { font-size: 18px; font-weight: 700; color: #fff; }
.nav-links { display: flex; gap: 20px; }
.nav-links a { font-size: 14px; color: var(--text-muted); transition: color 0.3s; }
.nav-links a:hover { color: var(--brand-yellow); }

/* Hero */
.hero {
  padding: 40px 0;
  background: linear-gradient(135deg, #1a1a1a 0%, #2a2018 100%);
  border-bottom: 1px solid var(--border-color);
}
.hero-content { text-align: center; margin-bottom: 30px; }
.hero h1 { font-size: 32px; color: #fff; margin-bottom: 16px; line-height: 1.2; }
.hero h1 em { color: var(--brand-yellow); font-style: normal; }
.hero p { color: var(--text-muted); font-size: 16px; max-width: 600px; margin: 0 auto; }
.hero-gallery {
  display: flex; gap: 16px; overflow-x: auto; padding-bottom: 10px;
  scrollbar-width: none;
}
.hero-gallery::-webkit-scrollbar { display: none; }
.hero-gallery img {
  height: 220px; width: auto; border-radius: var(--radius);
  flex-shrink: 0; border: 1px solid var(--border-color);
}

/* Download Bar */
.download-bar { padding: 30px 0; background: var(--bg-light); }
.dl-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn-dl {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 32px; border-radius: 30px; font-size: 16px; font-weight: 600;
  color: #000; background: var(--brand-yellow); transition: transform 0.2s;
  border: none; cursor: pointer; min-width: 160px;
}
.btn-dl:hover { transform: translateY(-2px); }
.btn-dl.secondary { background: transparent; border: 1px solid var(--brand-yellow); color: var(--brand-yellow); }

/* Sections */
section { padding: 60px 0; }
.section-header { margin-bottom: 40px; text-align: center; }
.section-header h2 { font-size: 28px; color: #fff; margin-bottom: 12px; }
.section-header p { color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* Boom Grid */
.boom-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 20px;
}
.boom-card { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 3/4; }
.boom-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.boom-card:hover img { transform: scale(1.05); }
.boom-card .title {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 30px 12px 12px; font-size: 14px; font-weight: 600; color: #fff;
  background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
}

/* Left-Right Layout */
.split-layout { display: grid; grid-template-columns: 1fr; gap: 30px; align-items: center; }
@media (min-width: 768px) {
  .split-layout { grid-template-columns: 1fr 1fr; }
}
.split-text h3 { font-size: 22px; color: var(--brand-yellow); margin-bottom: 16px; }
.split-text ul { list-style: none; }
.split-text li { margin-bottom: 12px; display: flex; gap: 10px; color: var(--text-main); font-size: 15px; }
.split-text li::before { content: '✨'; font-size: 14px; }
.split-img { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-color); }
.split-img img { width: 100%; height: auto; }

/* Timeline */
.timeline { position: relative; padding-left: 20px; border-left: 2px solid var(--border-color); margin-top: 20px; }
.timeline-item { position: relative; margin-bottom: 24px; }
.timeline-item::before {
  content: ''; position: absolute; left: -27px; top: 6px;
  width: 12px; height: 12px; border-radius: 50%; background: var(--brand-yellow);
}
.timeline-time { font-size: 14px; font-weight: bold; color: var(--brand-yellow); margin-bottom: 4px; }
.timeline-text { font-size: 14px; color: var(--text-muted); }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--bg-light); border-radius: var(--radius); margin-bottom: 12px; padding: 16px 20px; }
.faq-q { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 8px; }
.faq-a { font-size: 15px; color: var(--text-muted); }

/* Download Section */
.download-section { background: var(--bg-light); }
.dl-steps { display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 40px; }
@media (min-width: 768px) { .dl-steps { grid-template-columns: repeat(3, 1fr); } }
.step-card { background: var(--bg-dark); padding: 24px; border-radius: var(--radius); border: 1px solid var(--border-color); }
.step-card h4 { color: var(--brand-yellow); font-size: 18px; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-muted); }

.dl-proper { display: flex; flex-direction: column; align-items: center; gap: 30px; }
@media (min-width: 768px) { .dl-proper { flex-direction: row; justify-content: center; } }
.dl-qr { text-align: center; }
.dl-qr img { width: 180px; height: 180px; border-radius: var(--radius); background: #fff; padding: 10px; }
.dl-qr p { margin-top: 10px; font-size: 14px; color: var(--text-muted); }

/* Footer */
.site-footer {
  background: #000; padding: 40px 0 20px; border-top: 1px solid var(--border-color);
  text-align: center; font-size: 14px; color: var(--text-muted);
}
.footer-brand { margin-bottom: 16px; display: flex; justify-content: center; align-items: center; gap: 8px; }
.footer-brand img { height: 24px; }
.footer-links { display: flex; justify-content: center; gap: 20px; margin-bottom: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); }
.footer-links a:hover { color: var(--brand-yellow); }
.footer-copyright { margin-top: 20px; font-size: 12px; color: #666; }
.update-time { font-size: 12px; color: #666; margin-top: 8px; }

/* Baidu Prompt */
#baidu-prompt {
  display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.8); z-index: 999; align-items: center; justify-content: center;
}
#baidu-prompt .prompt-box {
  background: var(--bg-light); padding: 24px; border-radius: var(--radius);
  width: 90%; max-width: 320px; text-align: center;
}
#baidu-prompt p { color: #fff; font-size: 15px; margin-bottom: 20px; }
#baidu-prompt button {
  padding: 10px 24px; background: var(--brand-yellow); color: #000;
  border: none; border-radius: 20px; font-weight: bold; cursor: pointer;
}