/* 杏吧APP官网 - xbweb.quest */
:root {
  --bg-primary: #0d0d14;
  --bg-secondary: #161622;
  --bg-card: #1e1e2e;
  --accent-pink: #ff4b8b;
  --accent-purple: #9d50bb;
  --accent-gradient: linear-gradient(135deg, #ff4b8b 0%, #9d50bb 100%);
  --text-primary: #f0f0f8;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;
  --border-color: #2a2a3e;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --radius: 12px;
  --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: #ff6ba3;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13, 13, 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);
}

.logo-link img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-desktop {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-desktop a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-desktop a:hover,
.nav-desktop 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: 8px;
}

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 20px;
  z-index: 999;
}

.nav-mobile.open {
  display: block;
}

.nav-mobile ul {
  list-style: none;
}

.nav-mobile li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.nav-mobile a {
  color: var(--text-secondary);
  font-size: 1rem;
  display: block;
}

/* Hero */
.hero {
  padding: 60px 0 40px;
  background: radial-gradient(ellipse at 50% 0%, rgba(157, 80, 187, 0.15) 0%, transparent 60%);
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.2rem;
  line-height: 1.3;
  margin-bottom: 16px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 32px;
}

.badge {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.btn-primary {
  display: inline-block;
  background: var(--accent-gradient);
  color: #fff;
  padding: 14px 36px;
  border-radius: 28px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 75, 139, 0.35);
  color: #fff;
}

/* Sections */
.section {
  padding: 48px 0;
}

.section-title {
  font-size: 1.6rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.section-desc {
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 700px;
}

.section-header {
  margin-bottom: 32px;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

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

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-purple);
}

.feature-card img {
  width: 100%;
  aspect-ratio: 9/16;
  object-fit: cover;
  object-position: top;
  max-height: 320px;
}

.feature-card-body {
  padding: 16px;
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Content Layout */
.content-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.content-layout.reverse {
  direction: rtl;
}

.content-layout.reverse > * {
  direction: ltr;
}

.content-text h2 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.content-text p {
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.content-image {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}

.content-image img {
  width: 100%;
  max-height: 500px;
  object-fit: contain;
  background: var(--bg-card);
}

/* Article Content */
.article-content {
  max-width: 860px;
  margin: 0 auto;
}

.article-content h1 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.article-content h2 {
  font-size: 1.4rem;
  margin: 32px 0 12px;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 1.15rem;
  margin: 24px 0 10px;
}

.article-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.article-content ul,
.article-content ol {
  color: var(--text-secondary);
  margin: 12px 0 16px 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

/* TOC */
.toc {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 32px;
}

.toc h2 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.toc ul {
  list-style: none;
  margin: 0;
}

.toc li {
  padding: 6px 0;
}

.toc a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* FAQ */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.faq-item h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--accent-pink);
}

.faq-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Internal Links */
.internal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0;
}

.internal-links a {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.internal-links a:hover {
  border-color: var(--accent-pink);
  color: var(--accent-pink);
}

/* Error Pages */
.error-page {
  text-align: center;
  padding: 80px 20px;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.error-code {
  font-size: 6rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 16px;
}

.error-page h1 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.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: 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.footer-col h3 {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: var(--accent-pink);
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Breadcrumb */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb span {
  margin: 0 8px;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .hero h1 {
    font-size: 1.6rem;
  }

  .content-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .content-layout.reverse {
    direction: ltr;
  }

  .feature-card img {
    max-height: 240px;
  }

  .section {
    padding: 32px 0;
  }

  .error-code {
    font-size: 4rem;
  }
}

@media (min-width: 769px) {
  .feature-card img {
    aspect-ratio: auto;
  }
}