/* 糖心Vlog - t-x.dev 全局样式 */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a24;
  --bg-card-hover: #222230;
  --text-primary: #f5f5f7;
  --text-secondary: #a0a0b0;
  --text-muted: #6b6b7b;
  --accent-pink: #ff2d75;
  --accent-purple: #8b5cf6;
  --accent-orange: #ff6b35;
  --gradient-brand: linear-gradient(135deg, #8b5cf6 0%, #ff2d75 50%, #ff6b35 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(139,92,246,.15) 0%, rgba(255,45,117,.15) 50%, rgba(255,107,53,.15) 100%);
  --border-color: rgba(255,255,255,.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,.4);
  --max-width: 1200px;
  --header-height: 72px;
}

*, *::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 .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(10,10,15,.92);
  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: 100%;
  gap: 24px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  flex-shrink: 0;
}

.logo-link:hover { color: var(--text-primary); }

.logo-link img { width: 44px; height: 44px; border-radius: var(--radius-sm); }

.logo-text {
  font-size: 1.25rem;
  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; flex-wrap: wrap; }

.main-nav a {
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text-primary);
  background: var(--gradient-subtle);
}

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

/* Hero */
.hero {
  padding: 80px 0 60px;
  background: var(--gradient-subtle);
  border-bottom: 1px solid var(--border-color);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255,45,117,.15);
  border: 1px solid rgba(255,45,117,.3);
  border-radius: 50px;
  font-size: .85rem;
  color: var(--accent-pink);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.3;
  margin-bottom: 20px;
  font-weight: 800;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 540px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform .2s, box-shadow .2s;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255,45,117,.35);
}

.btn-primary:hover { color: #fff; box-shadow: 0 6px 28px rgba(255,45,117,.5); }

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

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

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-visual img { width: 100%; border-radius: var(--radius-lg); }

/* Stats */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 48px 0;
  border-bottom: 1px solid var(--border-color);
}

.stat-item { text-align: center; }

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label { font-size: .9rem; color: var(--text-secondary); margin-top: 4px; }

/* Sections */
.section { padding: 64px 0; }

.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-tag {
  display: inline-block;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-pink);
  margin-bottom: 8px;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: background .2s, border-color .2s, transform .2s;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255,45,117,.2);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--gradient-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.feature-card h3 { font-size: 1.1rem; margin-bottom: 10px; }

.feature-card p { color: var(--text-secondary); font-size: .95rem; }

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

.showcase-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: transform .2s, box-shadow .2s;
}

.showcase-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

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

.showcase-body { padding: 20px; }

.showcase-body h3 { font-size: 1rem; margin-bottom: 8px; }

.showcase-body p { color: var(--text-secondary); font-size: .88rem; }

.showcase-body a { font-size: .88rem; font-weight: 600; }

/* Download Section */
.download-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.download-steps { list-style: none; }

.download-steps li {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-color);
}

.download-steps li:last-child { border-bottom: none; }

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .9rem;
  flex-shrink: 0;
}

.step-content h4 { font-size: 1rem; margin-bottom: 4px; }

.step-content p { color: var(--text-secondary); font-size: .9rem; }

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

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

.faq-item summary {
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card);
  transition: background .2s;
}

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

.faq-item summary::after { content: "+"; font-size: 1.2rem; color: var(--accent-pink); }

.faq-item[open] summary::after { content: "−"; }

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

.faq-answer {
  padding: 20px 24px;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  font-size: .95rem;
}

.faq-answer a { font-weight: 600; }

/* Content Pages */
.page-hero {
  padding: 48px 0 32px;
  background: var(--gradient-subtle);
  border-bottom: 1px solid var(--border-color);
}

.page-hero h1 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 12px; }

.breadcrumb {
  font-size: .88rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

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

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

.page-content {
  padding: 48px 0 80px;
  max-width: 860px;
}

.page-content h2 {
  font-size: 1.4rem;
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.page-content h2:first-child { margin-top: 0; }

.page-content h3 { font-size: 1.1rem; margin: 24px 0 12px; }

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

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

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

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

.last-updated {
  font-size: .85rem;
  color: var(--text-muted);
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

/* 404 */
.error-page {
  min-height: calc(100vh - var(--header-height) - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 20px;
}

.error-code {
  font-size: 8rem;
  font-weight: 900;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.error-page h1 { font-size: 1.8rem; margin: 16px 0; }

.error-page p { color: var(--text-secondary); margin-bottom: 32px; }

/* 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: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: .9rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: .95rem;
  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: .88rem;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: .85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }

.footer-links a { color: var(--text-muted); }

/* Internal link highlight */
.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0;
}

.inline-links a {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: .85rem;
  color: var(--text-secondary);
}

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

/* Responsive */
@media (max-width: 992px) {
  .hero-grid, .download-grid { grid-template-columns: 1fr; }
  .features-grid, .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Category Nav */
.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 48px;
}

.category-nav a {
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  color: var(--text-secondary);
  font-size: .9rem;
  transition: all .2s;
}

.category-nav a:hover {
  border-color: var(--accent-pink);
  color: var(--accent-pink);
  background: rgba(255,45,117,.08);
}

/* Content Block - Image + Text alternating */
.content-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 80px;
}

.content-block:last-child { margin-bottom: 0; }

.content-block.reverse .content-block-img { order: 2; }
.content-block.reverse .content-block-text { order: 1; }

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

.content-block-img img {
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
  aspect-ratio: 9/16;
  object-fit: cover;
  object-position: top;
}

.content-block-text h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  margin-bottom: 16px;
  line-height: 1.4;
}

.content-block-text h3 {
  font-size: 1.05rem;
  color: var(--accent-pink);
  margin: 24px 0 10px;
}

.content-block-text p {
  color: var(--text-secondary);
  margin-bottom: 14px;
  font-size: .95rem;
}

.content-block-text ul {
  margin: 0 0 16px 20px;
  color: var(--text-secondary);
  font-size: .93rem;
}

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

.content-block-text .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0;
  list-style: none;
  margin-left: 0;
}

.content-block-text .tag-list li {
  padding: 4px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: .8rem;
  color: var(--text-muted);
  margin: 0;
}

/* SEO Article */
.seo-article {
  max-width: 900px;
  margin: 0 auto;
}

.seo-article h2 {
  font-size: 1.6rem;
  margin-bottom: 20px;
  text-align: center;
}

.seo-article p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: .95rem;
}

.seo-article .highlight-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--accent-pink);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin: 28px 0;
}

.seo-article .highlight-box h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

/* Image Gallery Row */
.gallery-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.gallery-row img {
  border-radius: var(--radius-md);
  aspect-ratio: 9/16;
  object-fit: cover;
  object-position: top;
  border: 1px solid var(--border-color);
  transition: transform .2s;
}

.gallery-row img:hover { transform: scale(1.03); }

/* Compare Table */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: .93rem;
}

.compare-table th,
.compare-table td {
  padding: 14px 18px;
  text-align: left;
  border: 1px solid var(--border-color);
}

.compare-table th {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 600;
}

.compare-table td { color: var(--text-secondary); }

.compare-table tr:nth-child(even) td { background: rgba(255,255,255,.02); }

.compare-table .check { color: var(--accent-pink); font-weight: 700; }

@media (max-width: 992px) {
  .content-block { grid-template-columns: 1fr; gap: 32px; }
  .content-block.reverse .content-block-img { order: 0; }
  .content-block.reverse .content-block-text { order: 0; }
  .content-block-img img { max-width: 320px; }
  .gallery-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
  }

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

  .features-grid, .showcase-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 40px; }
  .section { padding: 48px 0; }
}

#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  background: transparent;
  margin: 10px 0;
}

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

#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;
  display: block;
  border: none;
  background: linear-gradient(135deg, #fff, #fff);
}

#ads a {
  display: inline-block;
  text-decoration: none;
  border-radius: 15px;
}

#ads img:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 10px 24px rgba(24, 24, 24, 0.18);
}

#ads figcaption,
#ads .caption {
  height: 15px;
  font-size: 12px;
  color: #666;
  text-align: center;
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#applist {
  text-align: center;
}

#applist .applist-title {
  font-weight: bold;
}

.ads-bar {
  padding: 12px 0 0;
}