/* 抖阴传媒 - dyvip.mom */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a28;
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b0;
  --accent-cyan: #25f4ee;
  --accent-magenta: #fe2c55;
  --accent-red: #ff2d55;
  --accent-warm: #ff6b4a;
  --border-color: #2a2a3a;
  --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-cyan);
  text-decoration: none;
  transition: color 0.2s;
}

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

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

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

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-desktop {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex: 1;
}

.nav-desktop ul {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-desktop li {
  flex-shrink: 0;
}

.nav-desktop a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  white-space: nowrap;
  display: block;
  padding: 6px 0;
}

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

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

.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 {
  border-bottom: 1px solid var(--border-color);
}

.nav-mobile a {
  display: block;
  padding: 14px 0;
  color: var(--text-primary);
  font-size: 1rem;
}

/* Hero */
.hero {
  padding: 60px 20px 80px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  line-height: 1.3;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 32px;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--accent-magenta), #d91a4a);
  color: #fff;
  padding: 14px 36px;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(254, 44, 85, 0.4);
  color: #fff;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.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);
}

/* Main content */
.main-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 60px;
}

.section {
  margin-bottom: 64px;
}

.section-title {
  font-size: 1.75rem;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-magenta);
  display: inline-block;
}

.section-subtitle {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 1rem;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}

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

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

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

/* Screenshot gallery */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.screenshot-item {
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: transform 0.2s;
}

.screenshot-item:hover {
  transform: scale(1.02);
}

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

.screenshot-caption {
  padding: 14px 16px;
}

.screenshot-caption h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.screenshot-caption p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Article content */
.article-content h2 {
  font-size: 1.5rem;
  margin: 40px 0 16px;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 1.2rem;
  margin: 28px 0 12px;
  color: var(--accent-cyan);
}

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

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

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

.article-content strong {
  color: var(--text-primary);
}

/* Category tags */
.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}

.tag {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.tag.active {
  background: var(--accent-magenta);
  border-color: var(--accent-magenta);
  color: #fff;
}

/* FAQ */
.faq-list {
  margin-top: 24px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 18px 20px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 0 20px 18px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Download steps */
.steps {
  counter-reset: step;
  margin: 24px 0;
}

.step-item {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.step-content h4 {
  margin-bottom: 6px;
}

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

/* Page header for subpages */
.page-header {
  padding: 48px 20px 32px;
  text-align: center;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: 8px;
}

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

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

.page-body h2 {
  font-size: 1.35rem;
  margin: 32px 0 14px;
  color: var(--accent-cyan);
}

.page-body h3 {
  font-size: 1.1rem;
  margin: 24px 0 10px;
}

.page-body p,
.page-body li {
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.8;
}

.page-body ul,
.page-body ol {
  margin: 14px 0 14px 24px;
}

/* Error pages */
.error-page {
  min-height: calc(100vh - var(--header-height) - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
}

.error-code {
  font-size: 6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.error-title {
  font-size: 1.5rem;
  margin: 16px 0 12px;
}

.error-desc {
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* Footer */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 20px 24px;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

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

.footer-col h4 {
  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-cyan);
}

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

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

.footer-bottom a:hover {
  color: var(--accent-cyan);
}

/* Breadcrumb */
.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 20px 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

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

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

/* Internal link highlight */
.internal-link {
  color: var(--accent-cyan);
  border-bottom: 1px dashed var(--accent-cyan);
}

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

  .menu-toggle {
    display: block;
    flex-shrink: 0;
  }

  .header-inner {
    gap: 12px;
  }

  .hero {
    padding: 40px 16px 60px;
  }

  .screenshot-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .screenshot-item img {
    aspect-ratio: 9/14;
  }

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

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

@media (max-width: 480px) {
  .screenshot-grid {
    grid-template-columns: 1fr;
  }

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