:root {
  --base: #0b0b0b; --sizecolor: #f2f2f2; --clickcolor: #fe2c55; --contrast: #222; --contrast-2: #aaa;
}
body { background: #1a1a1a; margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
a { color: inherit; }

/* 抖阴APP - 全局样式 */
:root {
  --primary: #ff6b35;
  --primary-dark: #e55a2b;
  --secondary: #1a1a2e;
  --accent: #16213e;
  --text: #333;
  --text-light: #666;
  --bg: #f8f9fa;
  --white: #fff;
  --border: #e9ecef;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --max-width: 960px;
}

*,
*::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;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Header */
.site-header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--secondary);
  font-weight: 700;
  font-size: 1.1rem;
}

.logo-link img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.nav-desktop {
  display: flex;
  gap: 24px;
  list-style: none;
}

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

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--secondary);
  padding: 4px 8px;
}

/* Mobile Nav */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
}

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

.nav-mobile-panel {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 280px;
  background: var(--white);
  padding: 24px;
  overflow-y: auto;
}

.nav-mobile-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  float: right;
  color: var(--text);
}

.nav-mobile ul {
  list-style: none;
  margin-top: 40px;
}

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

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

/* Main Content */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 40px;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--accent) 100%);
  color: var(--white);
  padding: 48px 20px;
  text-align: center;
  margin: 0 -20px 32px;
  border-radius: 0 0 var(--radius) var(--radius);
}

.hero h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero p {
  font-size: 1rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 24px;
}

.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  padding: 12px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.2s, transform 0.2s;
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
}

/* Sections */
.section {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 28px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}

.section h2 {
  font-size: 1.4rem;
  color: var(--secondary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--primary);
  display: inline-block;
}

.section h3 {
  font-size: 1.15rem;
  color: var(--secondary);
  margin: 24px 0 12px;
}

.section p {
  margin-bottom: 14px;
  color: var(--text-light);
}

.section ul,
.section ol {
  margin: 12px 0 16px 20px;
  color: var(--text-light);
}

.section li {
  margin-bottom: 8px;
}

.section strong {
  color: var(--text);
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin: 20px 0;
}

.feature-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 20px;
  border-left: 4px solid var(--primary);
}

.feature-card h4 {
  color: var(--secondary);
  margin-bottom: 8px;
  font-size: 1rem;
}

.feature-card p {
  font-size: 0.9rem;
  margin: 0;
}

/* Screenshots */
.screenshot {
  margin: 24px 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.screenshot img {
  width: 100%;
}

.screenshot figcaption {
  background: var(--bg);
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--text-light);
  text-align: center;
}

.screenshot-pair {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 24px 0;
}

/* Steps */
.steps {
  counter-reset: step;
  list-style: none;
  margin: 16px 0;
  padding: 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding: 16px 16px 16px 56px;
  margin-bottom: 12px;
  background: var(--bg);
  border-radius: var(--radius);
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  color: var(--secondary);
}

.faq-item p {
  margin: 0;
  font-size: 0.95rem;
}

/* TOC */
.toc {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 24px;
}

.toc h2 {
  font-size: 1rem;
  margin-bottom: 12px;
  color: var(--secondary);
  border: none;
  padding: 0;
}

.toc ol {
  margin: 0;
  padding-left: 20px;
}

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

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

/* Legal Pages */
.legal-page .section h2 {
  display: block;
  border-bottom: none;
  margin-top: 32px;
}

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

.legal-page .update-date {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

/* 404 */
.error-page {
  text-align: center;
  padding: 80px 20px;
}

.error-page h1 {
  font-size: 5rem;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 16px;
}

.error-page h2 {
  font-size: 1.5rem;
  color: var(--secondary);
  margin-bottom: 12px;
}

.error-page p {
  color: var(--text-light);
  margin-bottom: 24px;
}

/* Footer */
.site-footer {
  background: var(--secondary);
  color: rgba(255, 255, 255, 0.8);
  padding: 32px 20px;
  margin-top: 40px;
}

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

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 24px;
  list-style: none;
  margin-bottom: 20px;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
}

.footer-nav a:hover {
  color: var(--white);
}

.footer-copy {
  font-size: 0.85rem;
  opacity: 0.7;
}

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

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

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

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

  .menu-toggle {
    display: block;
  }

  .section {
    padding: 24px 18px;
  }

  .hero {
    padding: 36px 16px;
    margin: 0 -20px 24px;
  }
}


#applist {
  text-align: center;
  background: var(--white);
  border-radius: var(--radius);
  padding: 16px 12px 12px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

#applist .applist-title {
  font-weight: bold;
  font-size: 0.95rem;
  color: var(--secondary);
  margin-bottom: 10px;
}

#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  background: transparent;
}

#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;
  margin-top: 4px;
}


/* === shell layout (paired with target theme CSS above) === */
.header-box { width: 100%; }
.header {
  height: 70px; display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; position: sticky; top: 0; z-index: 1000;
  background: var(--base, #000); color: var(--sizecolor, #fff);
}
.logo img { height: 50px; width: auto; border-radius: 10px; }
.nav { display: flex; flex-wrap: wrap; gap: 14px 18px; align-items: center; }
.nav a { color: var(--sizecolor, #fff); text-decoration: none; font-size: 15px; }
.nav a:hover, .nav a.active { color: var(--clickcolor, #fe2c55); }
button.menu-btn {
  display: none; background: none; border: none; color: var(--sizecolor, #fff);
  font-size: 26px; cursor: pointer;
}
main {
  max-width: 1100px; margin: 16px auto; padding: 28px 24px;
  background: var(--base, #111); border-radius: 8px;
  color: var(--sizecolor, #eee);
}
.content a { color: var(--clickcolor, #fe2c55); font-weight: 600; }
.content h1, .content h2 {
  font-size: 20px; padding: 0.9em 1em; text-align: center; margin: 0 0 18px;
  background: #fff; color: #111;
}
.content h3 { margin: 1.2em 0 0.6em; font-size: 18px; }
.content p { margin: 0 0 1.2em; line-height: 1.75; }
.content ul, .content ol { margin: 0 0 1.2em 1.6em; }
.img-box { text-align: center; margin: 16px 0 22px; }
.img-box img, .content img {
  max-width: 860px; width: 100%; height: auto; border-radius: 12px; display: block; margin: 0 auto;
}
.footer {
  background: var(--base, #000); color: var(--sizecolor, #fff);
  padding: 28px 16px; margin-top: 28px; text-align: center;
}
.footer a { color: var(--sizecolor, #fff); margin: 0 10px 8px; display: inline-block; text-decoration: none; }
.footer-bottom { margin-top: 14px; font-size: 13px; opacity: 0.85; }
.overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.55); display: none; z-index: 2000;
}
.overlay.is-open { display: block; }
.sidebar {
  width: 280px; height: 100%; background: var(--base, #111); padding: 20px; position: relative;
}
.sidebar .menu a {
  display: block; padding: 14px 8px; color: var(--sizecolor, #fff); text-decoration: none; font-size: 18px;
}
button.close-btn {
  position: absolute; top: 16px; right: -52px; width: 40px; height: 40px;
  background: #333; color: #fff; border: none; cursor: pointer;
}
.right-area { position: absolute; left: 280px; right: 0; top: 0; bottom: 0; }
.ads-top-bar { margin: 10px 0 22px; }
#applist {
  text-align: center; margin: 8px 0; padding: 14px 10px;
  border: 1px solid rgba(255,255,255,0.12); border-radius: 10px; background: rgba(0,0,0,0.35);
}
#applist .applist-title { font-weight: bold; margin-bottom: 10px; }
#ads { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; }
#ads .ads-item, #ads > div { width: 70px; text-align: center; }
#ads img { width: 65px; height: 65px; object-fit: cover; border-radius: 18px; display: block; margin: 0 auto; }
#ads .caption, #ads figcaption {
  font-size: 12px; max-width: 100px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin: 4px auto 0;
}
.related { margin-top: 28px; padding-top: 14px; border-top: 1px solid rgba(255,255,255,0.12); }
@media (max-width: 768px) {
  .nav { display: none !important; }
  button.menu-btn { display: block !important; }
}