/* 杏吧原创 - 全局样式 */
:root {
  --bg-primary: #0d0b14;
  --bg-secondary: #161222;
  --bg-card: #1e1830;
  --text-primary: #f5f3ff;
  --text-secondary: #b8b0cc;
  --accent-pink: #ff2d75;
  --accent-orange: #ff6b3d;
  --accent-purple: #8b5cf6;
  --gradient-brand: linear-gradient(135deg, #ff6b3d 0%, #ff2d75 50%, #8b5cf6 100%);
  --border-color: rgba(255, 255, 255, 0.08);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius: 12px;
  --max-width: 1200px;
  --header-height: 64px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--accent-pink); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-orange); }

img { max-width: 100%; height: auto; display: block; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13, 11, 20, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.15rem;
}

.logo-link img { width: 36px; height: 36px; border-radius: 8px; }

.main-nav { display: flex; gap: 28px; list-style: none; }
.main-nav a { color: var(--text-secondary); font-size: 0.95rem; }
.main-nav a:hover, .main-nav a.active { color: var(--text-primary); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

/* Hero */
.hero {
  padding: 60px 0 40px;
  background: radial-gradient(ellipse at 50% 0%, rgba(139, 92, 246, 0.15) 0%, transparent 60%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 45, 117, 0.15);
  color: var(--accent-pink);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.3;
  margin-bottom: 16px;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 28px; }

.btn-group { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
}

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

.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

.hero-phone {
  position: relative;
  max-width: 320px;
  margin: 0 auto;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow), 0 0 60px rgba(255, 45, 117, 0.15);
  border: 2px solid var(--border-color);
}

/* Sections */
.section { padding: 56px 0; }
.section-alt { background: var(--bg-secondary); }

.section-header { text-align: center; margin-bottom: 40px; }
.section-header h2 { font-size: 1.75rem; margin-bottom: 12px; }
.section-header p { color: var(--text-secondary); max-width: 640px; margin: 0 auto; }

/* Feature cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border-color);
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover { border-color: rgba(255, 45, 117, 0.3); transform: translateY(-4px); }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 10px; color: var(--accent-pink); }
.feature-card p { color: var(--text-secondary); font-size: 0.92rem; }

/* Screenshot gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}

.gallery-item img { width: 100%; aspect-ratio: 9/16; object-fit: cover; }

.gallery-caption {
  padding: 10px 12px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-align: center;
}

/* Content blocks */
.content-block { max-width: 860px; margin: 0 auto; }
.content-block h2 { font-size: 1.5rem; margin: 36px 0 16px; color: var(--accent-pink); }
.content-block h3 { font-size: 1.15rem; margin: 24px 0 12px; }
.content-block p { color: var(--text-secondary); margin-bottom: 16px; text-align: justify; }
.content-block ul, .content-block ol { color: var(--text-secondary); margin: 0 0 16px 24px; }
.content-block li { margin-bottom: 8px; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.showcase-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 40px;
  padding: 24px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.showcase-row.reverse { grid-template-columns: 1fr 280px; }
.showcase-row.reverse .showcase-img { order: 2; }

.showcase-img {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.showcase-img img { width: 100%; border-radius: var(--radius); }

.showcase-text h3 { font-size: 1.2rem; margin-bottom: 12px; }
.showcase-text p { color: var(--text-secondary); font-size: 0.93rem; margin-bottom: 10px; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-primary);
  padding: 18px 20px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-a {
  padding: 0 20px 18px;
  color: var(--text-secondary);
  font-size: 0.93rem;
  display: none;
}

.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-q { color: var(--accent-pink); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }

.step-card {
  text-align: center;
  padding: 28px 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.step-num {
  width: 40px; height: 40px;
  background: var(--gradient-brand);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 14px;
  font-weight: 700;
}

/* Tags */
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.tag {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.8rem;
}

/* Legal pages */
.page-hero {
  padding: 48px 0 32px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.page-hero h1 { font-size: 2rem; margin-bottom: 10px; }
.page-hero p { color: var(--text-secondary); }

.legal-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.legal-content h2 { font-size: 1.3rem; margin: 32px 0 14px; color: var(--accent-pink); }
.legal-content h3 { font-size: 1.05rem; margin: 20px 0 10px; }
.legal-content p, .legal-content li { color: var(--text-secondary); margin-bottom: 12px; line-height: 1.8; }
.legal-content ul, .legal-content ol { margin-left: 24px; margin-bottom: 16px; }

/* Error pages */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
}

.error-code {
  font-size: 6rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.error-page h1 { font-size: 1.5rem; margin: 16px 0 10px; }
.error-page p { color: var(--text-secondary); margin-bottom: 24px; }

/* Footer */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-brand p { color: var(--text-secondary); font-size: 0.88rem; margin-top: 12px; }

.footer-col h4 { font-size: 0.95rem; margin-bottom: 14px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: var(--text-secondary); font-size: 0.88rem; }

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb span { margin: 0 6px; }

.internal-links {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  margin: 32px 0;
  border: 1px solid var(--border-color);
}

.internal-links h3 { font-size: 1rem; margin-bottom: 12px; }
.internal-links ul { list-style: none; display: flex; flex-wrap: wrap; gap: 12px 24px; }
.internal-links a { font-size: 0.9rem; }

/* Responsive */
@media (max-width: 900px) {
  .hero-grid, .two-col, .showcase-row, .showcase-row.reverse, .footer-grid {
    grid-template-columns: 1fr;
  }
  .showcase-row.reverse .showcase-img { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .main-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
  }

  .main-nav.open { display: flex; }

  .hero { padding: 40px 0 24px; }
  .section { padding: 40px 0; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
}