:root {
  --primary: #c8ff00;
  --primary-dark: #a8d900;
  --bg-dark: #0a0a0a;
  --bg-card: #111111;
  --text-primary: #ffffff;
  --text-secondary: #888888;
  --text-muted: #555555;
  --border: #222222;
  --danger: #ff4444;
  --warning: #ff9900;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans SC', -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
}

.bg-grid {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image: 
    linear-gradient(rgba(200,255,0,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,255,0,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: -2;
}

.bg-glow {
  position: fixed;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 20%, rgba(200,255,0,0.08) 0%, transparent 40%);
  pointer-events: none;
  z-index: -1;
}

/* 导航 */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  background: rgba(10,10,10,0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(200,255,0,0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo { text-decoration: none; }
.logo-text {
  color: var(--primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 20px;
  font-weight: 700;
}

.nav-links { display: flex; gap: 32px; }
.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); }

/* Hero */
.hero {
  min-height: 100vh;
  padding: 120px 24px 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-content { max-width: 700px; text-align: center; }

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(200,255,0,0.1);
  border: 1px solid rgba(200,255,0,0.3);
  border-radius: 100px;
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 24px;
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
}

.title-line { display: block; }
.title-highlight {
  display: block;
  color: var(--primary);
  font-family: 'JetBrains Mono', monospace;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}
.hero-desc .highlight { color: var(--primary); font-weight: 600; }

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 48px;
}

.btn-primary, .btn-secondary {
  padding: 16px 32px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-primary {
  background: var(--primary);
  color: var(--bg-dark);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(200,255,0,0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.hero-stats { display: flex; gap: 48px; justify-content: center; }
.stat { display: flex; flex-direction: column; align-items: center; }
.stat-number {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  font-family: 'JetBrains Mono', monospace;
}
.stat-label { font-size: 14px; color: var(--text-muted); }

/* 广告容器 */
.ad-container {
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 24px;
  min-height: 90px;
}

/* Section */
.section { padding: 80px 24px; }
.container { max-width: 1200px; margin: 0 auto; }
.section-title {
  font-size: 36px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 48px;
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  transition: all 0.3s;
}
.feature-card:hover {
  border-color: rgba(200,255,0,0.3);
  transform: translateY(-4px);
}

.feature-icon {
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--primary);
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(200,255,0,0.1);
  border: 1px solid rgba(200,255,0,0.3);
  border-radius: 8px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 18px;
  color: var(--primary);
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Providers */
.providers { background: linear-gradient(180deg, transparent, rgba(200,255,0,0.02), transparent); }

.providers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.provider-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  position: relative;
  transition: all 0.3s;
}
.provider-card:hover { border-color: rgba(200,255,0,0.3); }

.provider-card.recommended {
  border-color: rgba(200,255,0,0.5);
  background: linear-gradient(135deg, rgba(200,255,0,0.05), transparent);
}
.provider-card.warning {
  opacity: 0.6;
  border-color: rgba(255,68,68,0.3);
}

.provider-badge {
  position: absolute;
  top: -10px; right: 16px;
  padding: 4px 12px;
  background: var(--primary);
  color: var(--bg-dark);
  font-size: 11px;
  font-weight: 600;
  border-radius: 100px;
}
.provider-badge.warning { background: var(--danger); color: white; }

.provider-card h3 { font-size: 16px; margin-bottom: 6px; }
.provider-card > p { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; }

.provider-features { list-style: none; }
.provider-features li {
  font-size: 11px;
  color: var(--text-secondary);
  padding: 3px 0 3px 14px;
  position: relative;
}
.provider-features li::before {
  content: '+';
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* Download */
.download { background: linear-gradient(180deg, transparent, rgba(200,255,0,0.03)); }

.download-card {
  background: var(--bg-card);
  border: 2px solid var(--primary);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  box-shadow: 0 20px 60px rgba(200,255,0,0.1);
}

.download-info { display: flex; align-items: center; gap: 20px; }

.download-icon {
  font-size: 24px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--bg-dark);
  background: var(--primary);
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}

.download-details h3 { font-size: 20px; margin-bottom: 6px; }
.download-details p { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; }
.download-meta { display: flex; gap: 16px; font-size: 12px; color: var(--text-muted); }

.download-buttons { display: flex; gap: 12px; }
.btn-download, .btn-github {
  padding: 14px 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
}
.btn-download { background: var(--primary); color: var(--bg-dark); }
.btn-download:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-github { background: transparent; color: var(--text-primary); border: 1px solid var(--border); }
.btn-github:hover { border-color: var(--primary); color: var(--primary); }

.download-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.download-cards .download-card {
  flex-direction: column;
  text-align: center;
  padding: 24px;
  margin-bottom: 0;
}

.download-cards .download-info {
  flex-direction: column;
  margin-bottom: 16px;
}

.download-cards .download-icon {
  font-size: 16px;
  width: 48px;
  height: 48px;
}

.download-cards .download-details h3 {
  font-size: 18px;
}

.download-all {
  text-align: center;
  margin-bottom: 24px;
}

.download-note {
  text-align: center;
  padding: 16px;
  background: rgba(255,153,0,0.1);
  border: 1px solid rgba(255,153,0,0.3);
  border-radius: 8px;
}
.download-note p { 
  font-size: 12px; 
  color: var(--text-secondary); 
  margin-bottom: 4px;
}
.download-note p:last-child {
  margin-bottom: 0;
}

/* Guide */
.steps { max-width: 700px; margin: 0 auto; }
.step {
  display: flex;
  gap: 24px;
  margin-bottom: 40px;
  position: relative;
}
.step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 20px;
  top: 50px;
  bottom: -20px;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), transparent);
}

.step-number {
  width: 42px; height: 42px;
  background: var(--primary);
  color: var(--bg-dark);
  font-size: 20px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-content h3 { font-size: 18px; margin-bottom: 10px; }
.step-content p { font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }

.code-block {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #1a1a1a;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
}
.code-block code {
  flex: 1;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--primary);
}
.copy-btn {
  padding: 5px 10px;
  background: var(--border);
  border: none;
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s;
}
.copy-btn:hover { background: var(--primary); color: var(--bg-dark); }

.api-links { display: flex; flex-wrap: wrap; gap: 10px; }
.api-links a {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 13px;
  transition: all 0.2s;
}
.api-links a:hover { border-color: var(--primary); color: var(--primary); }

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 24px;
}
.footer-content { text-align: center; }
.footer-logo { margin-bottom: 12px; }
.footer-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; }
.footer-links { margin-bottom: 20px; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 13px; }
.footer-links a:hover { color: var(--primary); }
.footer-links .divider { color: var(--text-muted); margin: 0 12px; }
.footer-copyright { font-size: 12px; color: var(--text-muted); }

/* Responsive */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .providers-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero-title { font-size: 32px; }
  .features-grid, .providers-grid { grid-template-columns: 1fr; }
  .download-card { flex-direction: column; gap: 20px; text-align: center; }
  .download-info { flex-direction: column; }
  .download-cards { grid-template-columns: 1fr; }
  .step { flex-direction: column; gap: 12px; }
  .step::after { display: none; }
}