/* 杏吧原创官网 - 全局样式 */
:root {
  --primary: #ff3d7f;
  --primary-dark: #e02d6a;
  --secondary: #7b5cff;
  --accent: #ff8c42;
  --bg-dark: #0a0b2d;
  --bg-card: #12143a;
  --bg-card-hover: #1a1d4f;
  --text-primary: #f0f0f8;
  --text-secondary: #a0a4c0;
  --border: rgba(255, 61, 127, 0.15);
  --gradient: linear-gradient(135deg, #7b5cff 0%, #ff3d7f 50%, #ff8c42 100%);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --radius: 12px;
  --max-width: 1200px;
}

*, *::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(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent);
}

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

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

/* Header */
.site-header {
  background: rgba(10, 11, 45, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-link img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

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

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

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}

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

/* Hero */
.hero {
  padding: 60px 0 50px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(123, 92, 255, 0.15) 0%, transparent 60%);
}

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

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 30px;
}

.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: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 61, 127, 0.4);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: rgba(255, 61, 127, 0.1);
  color: var(--primary);
}

/* Sections */
section {
  padding: 50px 0;
}

.section-title {
  font-size: 1.6rem;
  margin-bottom: 12px;
  text-align: center;
}

.section-desc {
  text-align: center;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 36px;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border);
  transition: transform 0.2s, background 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.feature-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* Category Showcase */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

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

.category-item:hover {
  transform: scale(1.03);
}

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

.category-item figcaption {
  padding: 12px 14px;
  font-size: 0.88rem;
  text-align: center;
  color: var(--text-secondary);
}

/* Content Block */
.content-block {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 36px;
  border: 1px solid var(--border);
  margin-bottom: 30px;
}

.content-block h2 {
  font-size: 1.4rem;
  margin-bottom: 16px;
  color: var(--primary);
}

.content-block h3 {
  font-size: 1.15rem;
  margin: 24px 0 10px;
  color: var(--accent);
}

.content-block p {
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.content-block ul,
.content-block ol {
  color: var(--text-secondary);
  padding-left: 24px;
  margin-bottom: 14px;
}

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

/* App Showcase */
.app-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

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

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

.app-screens {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.app-screens img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

/* Steps */
.steps-list {
  counter-reset: step;
  list-style: none;
  padding: 0;
}

.steps-list li {
  counter-increment: step;
  position: relative;
  padding: 20px 20px 20px 60px;
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 16px;
  border: 1px solid var(--border);
}

.steps-list li::before {
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
}

/* FAQ */
.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;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item[open] summary {
  color: var(--primary);
  border-bottom: 1px solid var(--border);
}

.faq-answer {
  padding: 16px 24px;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* Page (Legal/About) */
.page-header {
  padding: 50px 0 30px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(123, 92, 255, 0.1) 0%, transparent 60%);
}

.page-header h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}

.page-header p {
  color: var(--text-secondary);
}

.page-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 30px 20px 60px;
}

.page-content h2 {
  font-size: 1.3rem;
  margin: 32px 0 14px;
  color: var(--primary);
}

.page-content h3 {
  font-size: 1.1rem;
  margin: 24px 0 10px;
  color: var(--accent);
}

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

.page-content ul,
.page-content ol {
  padding-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);
  -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: rgba(10, 11, 45, 0.98);
  border-top: 1px solid var(--border);
  padding: 40px 0 24px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 30px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-top: 12px;
  line-height: 1.6;
}

.footer-links h4 {
  font-size: 0.95rem;
  margin-bottom: 14px;
  color: var(--text-primary);
}

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

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.footer-links a:hover {
  color: var(--primary);
}

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

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

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

.breadcrumb a:hover {
  color: var(--primary);
}

/* Internal links highlight */
.inline-link {
  color: var(--primary);
  border-bottom: 1px dashed var(--primary);
}

/* Responsive - Tablet */
@media (max-width: 992px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .app-showcase {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

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

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 11, 45, 0.98);
    flex-direction: column;
    padding: 16px 20px;
    gap: 0;
    border-bottom: 1px solid var(--border);
  }

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

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

  .nav-menu li:last-child {
    border-bottom: none;
  }

  .header-inner {
    position: relative;
  }

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

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .category-item img {
    aspect-ratio: 3/5;
    min-height: 280px;
  }

  .category-item figcaption {
    padding: 8px 6px;
    font-size: 0.8rem;
  }

  .app-screens {
    grid-template-columns: repeat(2, 1fr);
  }

  .content-block {
    padding: 24px 18px;
  }

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

  section {
    padding: 36px 0;
  }

  .section-title {
    font-size: 1.3rem;
  }
}

@media (max-width: 480px) {
  .category-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin: 0 -6px;
  }

  .category-item img {
    min-height: 300px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
}