/* 杏吧视频APP官网 - xbweb.click */
:root {
  --bg-dark: #0f0a1e;
  --bg-card: #1a1230;
  --bg-card-hover: #231a3d;
  --accent-pink: #ff2d78;
  --accent-orange: #ff8e53;
  --accent-purple: #7b4dff;
  --text-primary: #f5f0ff;
  --text-secondary: #b8adc9;
  --text-muted: #8a7fa0;
  --border: rgba(255, 45, 120, 0.15);
  --gradient-brand: linear-gradient(135deg, #ff2d78 0%, #ff8e53 100%);
  --gradient-bg: linear-gradient(180deg, #1a0b3b 0%, #0f0a1e 100%);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --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-dark);
  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: 100;
  background: rgba(15, 10, 30, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  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; }

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

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

/* Hero */
.hero {
  background: var(--gradient-bg);
  padding: 60px 0 80px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 45, 120, 0.15);
  color: var(--accent-pink);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: 20px;
  border: 1px solid var(--border);
}

.hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  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;
  max-width: 720px;
  margin: 0 auto 32px;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

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

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 45, 120, 0.35);
}

.btn-primary:hover { transform: translateY(-2px); color: #fff; box-shadow: 0 6px 28px rgba(255, 45, 120, 0.5); }

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

.btn-outline:hover { border-color: var(--accent-pink); color: var(--accent-pink); }

/* Sections */
.section { padding: 64px 0; }
.section-alt { background: rgba(26, 18, 48, 0.5); }

.section-header { text-align: center; margin-bottom: 48px; }

.section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 12px;
}

.section-header p { color: var(--text-secondary); max-width: 640px; margin: 0 auto; }

.section-header .anchor-link { color: var(--text-muted); font-size: 0.85rem; }

/* Feature grid */
.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-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.25s, border-color 0.25s;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 45, 120, 0.35);
}

.feature-card img { width: 100%; aspect-ratio: 9/16; object-fit: cover; object-position: top; max-height: 420px; }

.feature-card-body { padding: 20px; }

.feature-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* Content blocks */
.content-block { max-width: 860px; margin: 0 auto; }
.content-block h2 { font-size: 1.6rem; margin: 40px 0 16px; color: var(--text-primary); }
.content-block h3 { font-size: 1.2rem; margin: 28px 0 12px; color: var(--accent-orange); }
.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 column layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.two-col img {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

/* Showcase row */
.showcase-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

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

.showcase-item img { width: 100%; aspect-ratio: 9/14; object-fit: cover; object-position: top; }
.showcase-item figcaption { padding: 12px; font-size: 0.85rem; color: var(--text-secondary); text-align: center; }

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

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

.faq-item summary {
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--accent-pink); font-size: 1.2rem; }
.faq-item[open] summary::after { content: "−"; }

.faq-item .faq-answer { padding: 0 24px 18px; color: var(--text-secondary); font-size: 0.95rem; }

/* CTA banner */
.cta-banner {
  background: var(--gradient-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  margin: 48px 0;
}

.cta-banner h2 { margin-bottom: 12px; }
.cta-banner p { color: var(--text-secondary); margin-bottom: 24px; }

/* Page hero (sub pages) */
.page-hero {
  background: var(--gradient-bg);
  padding: 48px 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin-bottom: 8px; }
.page-hero p { color: var(--text-secondary); }

.page-content { padding: 48px 0 80px; }
.page-content .legal-text h2 { font-size: 1.3rem; margin: 32px 0 12px; }
.page-content .legal-text h3 { font-size: 1.05rem; margin: 20px 0 8px; color: var(--accent-orange); }
.page-content .legal-text p, .page-content .legal-text li { color: var(--text-secondary); margin-bottom: 12px; }
.page-content .legal-text ul { margin-left: 24px; }

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

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-pink); }

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

.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; }

/* Footer */
.site-footer {
  background: rgba(10, 6, 20, 0.95);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand img { width: 48px; border-radius: 10px; margin-bottom: 12px; }
.footer-brand p { color: var(--text-muted); font-size: 0.9rem; max-width: 320px; }

.footer-col h4 { font-size: 0.95rem; margin-bottom: 16px; color: var(--text-primary); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: var(--text-muted); font-size: 0.9rem; }
.footer-col a:hover { color: var(--accent-pink); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Error pages */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
  background: var(--gradient-bg);
}

.error-code {
  font-size: clamp(4rem, 15vw, 8rem);
  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 8px; }
.error-page p { color: var(--text-secondary); margin-bottom: 24px; }

/* Tags */
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.tag {
  background: rgba(123, 77, 255, 0.15);
  color: var(--accent-purple);
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.8rem;
  border: 1px solid rgba(123, 77, 255, 0.25);
}

/* Responsive */
@media (max-width: 768px) {
  .menu-toggle { display: block; }

  .nav-main {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(15, 10, 30, 0.98);
    flex-direction: column;
    padding: 16px 20px;
    gap: 0;
    border-bottom: 1px solid var(--border);
  }

  .nav-main.open { display: flex; }
  .nav-main li { padding: 12px 0; border-bottom: 1px solid var(--border); }

  .two-col { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero { padding: 40px 0 56px; }
  .section { padding: 40px 0; }
  .feature-card img { max-height: 360px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 280px; justify-content: center; }
}