/* 杏吧原创视频 - 全局样式 */
:root {
  --bg-primary: #0a0a0c;
  --bg-secondary: #14141a;
  --bg-card: #1a1a24;
  --text-primary: #f5f5f7;
  --text-secondary: #a0a0b0;
  --accent-pink: #ff4d80;
  --accent-orange: #ff8c42;
  --accent-purple: #8a2be2;
  --gradient-brand: linear-gradient(135deg, #ff4d80 0%, #ff8c42 50%, #8a2be2 100%);
  --border-color: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --max-width: 1200px;
  --header-height: 64px;
  --ads-bar-height: 88px;
}

*, *::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;
}

body.has-site-header {
  padding-top: var(--header-height);
}

body.has-site-header.has-ads-bar {
  padding-top: calc(var(--header-height) + var(--ads-bar-height));
}

body.has-ads-bar:not(.has-site-header) {
  padding-top: var(--ads-bar-height);
}

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: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 110;
  background: rgba(10, 10, 12, 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);
  gap: 16px;
}

.logo-link { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-link img { width: 40px; height: 40px; border-radius: 8px; }

/* 广告栏 - 固定于导航下方 */
#ads-bar-wrap {
  position: fixed;
  left: 0;
  right: 0;
  top: var(--header-height);
  z-index: 105;
  background: rgba(10, 10, 12, 0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

body:not(.has-site-header) #ads-bar-wrap {
  top: 0;
}

#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  margin: 0 auto;
  padding: 8px 12px;
  max-width: 1200px;
  gap: 6px;
}

#ads > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 70px;
}

#ads img {
  width: 65px;
  height: 65px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 6px 18px rgba(24, 24, 24, 0.12);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

#ads a { display: inline-block; border-radius: 15px; }

#ads img:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 10px 24px rgba(255, 77, 128, 0.35);
}

#ads .caption {
  height: 15px;
  font-size: 11px;
  color: #a0a0b0;
  text-align: center;
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 4px;
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.main-nav { display: flex; gap: 4px; }
.main-nav a {
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.95rem;
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--text-primary);
  background: rgba(255, 77, 128, 0.12);
}

.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(138, 43, 226, 0.15) 0%, transparent 60%);
}

.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.3;
  margin-bottom: 16px;
}
.hero-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 28px;
}
.hero-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 32px; }
.badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  background: rgba(255, 77, 128, 0.15);
  border: 1px solid rgba(255, 77, 128, 0.3);
  color: var(--accent-pink);
}

.btn-group { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
}
.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

/* Sections */
section { padding: 48px 0; }
section:nth-child(even) { background: var(--bg-secondary); }

.section-header { text-align: center; margin-bottom: 36px; }
.section-header h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin-bottom: 10px;
}
.section-header p { color: var(--text-secondary); max-width: 640px; margin: 0 auto; }

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: transform 0.25s, border-color 0.25s;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 77, 128, 0.3);
}
.feature-card img { width: 100%; aspect-ratio: 9/16; object-fit: cover; object-position: top; }
.feature-card-body { padding: 16px; }
.feature-card h3 { font-size: 1.05rem; 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: 1.5rem; margin: 32px 0 14px; color: var(--text-primary); }
.content-block h3 { font-size: 1.2rem; margin: 24px 0 10px; color: var(--accent-pink); }
.content-block p { margin-bottom: 16px; color: var(--text-secondary); }
.content-block ul, .content-block ol { margin: 0 0 16px 24px; color: var(--text-secondary); }
.content-block li { margin-bottom: 8px; }

/* Showcase row */
.showcase-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  margin: 40px 0;
}
.showcase-row.reverse { direction: rtl; }
.showcase-row.reverse > * { direction: ltr; }
.showcase-img {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}
.showcase-img img { width: 100%; }

/* Stats */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 40px;
  margin-bottom: 40px;
}
.stat-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}
.stat-num {
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { color: var(--text-secondary); font-size: 0.9rem; margin-top: 4px; }

/* 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;
  padding: 16px 20px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-a {
  padding: 0 20px 16px;
  color: var(--text-secondary);
  display: none;
}
.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-q::after { content: "−"; }
.faq-q::after { content: "+"; color: var(--accent-pink); }

/* Internal links */
.link-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
}
.link-grid a {
  padding: 8px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.link-grid a:hover { border-color: var(--accent-pink); color: var(--accent-pink); }

/* Page hero (sub pages) */
.page-hero {
  padding: 48px 0 32px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(138, 43, 226, 0.12) 0%, transparent 60%);
}
.page-hero h1 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin-bottom: 10px; }
.page-hero p { color: var(--text-secondary); }

.page-content { padding: 40px 0 60px; }
.page-content .content-block h2:first-child { margin-top: 0; }

/* Footer */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
}
.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: 0.9rem; margin-top: 12px; }
.footer-col h4 { font-size: 0.95rem; margin-bottom: 14px; color: var(--text-primary); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: var(--text-secondary); font-size: 0.9rem; }
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

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

body.has-ads-bar .error-page {
  min-height: calc(100vh - var(--ads-bar-height));
  padding-top: 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 8px; }
.error-page p { color: var(--text-secondary); margin-bottom: 24px; }

/* Breadcrumb */
.breadcrumb {
  padding: 12px 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb span { margin: 0 6px; }

/* Mobile */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 112;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  }
  .main-nav.open { display: flex; }
  .main-nav a {
    padding: 12px 16px;
    width: 100%;
  }
  .showcase-row { grid-template-columns: 1fr; }
  .showcase-row.reverse { direction: ltr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .feature-card img { aspect-ratio: 9/14; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 40px 0 28px; }
}