/* 抖阴官网 - dyvip.monster */
: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;
  --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;
  }
}

/* ===== 首页专属排版 (vm) ===== */
.home-page {
  overflow-x: hidden;
}

.vm-main {
  display: block;
}

/* --- Hero --- */
.vm-hero {
  position: relative;
  padding: 56px 20px 72px;
  text-align: center;
  overflow: hidden;
}

.vm-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(254, 44, 85, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(37, 244, 238, 0.06) 0%, transparent 50%),
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(42, 42, 58, 0.35) 39px, rgba(42, 42, 58, 0.35) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(42, 42, 58, 0.35) 39px, rgba(42, 42, 58, 0.35) 40px);
  pointer-events: none;
}

.vm-hero-inner {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}

.vm-hero-badge {
  display: inline-block;
  font-family: "Consolas", "Monaco", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--accent-cyan);
  border: 1px solid rgba(37, 244, 238, 0.3);
  padding: 6px 16px;
  margin-bottom: 28px;
}

.vm-hero h1 {
  font-size: clamp(1.85rem, 5vw, 2.8rem);
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

.vm-hero-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.vm-hero-cta {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.vm-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: 50px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  cursor: pointer;
}

.vm-btn-fill {
  background: var(--accent-magenta);
  color: #fff;
  border: none;
}

.vm-btn-fill:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(254, 44, 85, 0.4);
  color: #fff;
}

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

.vm-btn-ghost:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.vm-btn-block {
  width: 100%;
}

/* 叠放截图 */
.vm-hero-stack {
  position: relative;
  height: 320px;
  margin-bottom: 40px;
}

.vm-hero-card {
  position: absolute;
  bottom: 0;
  width: 140px;
  border-radius: 16px;
  overflow: hidden;
  border: 2px solid var(--border-color);
  background: #111;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55);
  transition: transform 0.3s;
}

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

.vm-hero-card figcaption {
  font-size: 0.68rem;
  text-align: center;
  padding: 6px;
  color: var(--text-secondary);
  background: var(--bg-card);
}

.vm-hero-card--left {
  left: 50%;
  transform: translateX(calc(-100% - 60px)) rotate(-8deg);
  z-index: 1;
}

.vm-hero-card--center {
  left: 50%;
  transform: translateX(-50%);
  width: 160px;
  z-index: 3;
}

.vm-hero-card--right {
  left: 50%;
  transform: translateX(60px) rotate(8deg);
  z-index: 2;
}

.vm-hero-stack:hover .vm-hero-card--left {
  transform: translateX(calc(-100% - 72px)) rotate(-12deg);
}

.vm-hero-stack:hover .vm-hero-card--right {
  transform: translateX(72px) rotate(12deg);
}

.vm-hero-stats {
  display: flex;
  justify-content: center;
  list-style: none;
  gap: 0;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  max-width: 480px;
  margin: 0 auto;
}

.vm-hero-stats li {
  flex: 1;
  padding: 16px 8px;
  border-right: 1px solid var(--border-color);
  text-align: center;
}

.vm-hero-stats li:last-child {
  border-right: none;
}

.vm-hero-stats b {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.vm-hero-stats span {
  font-size: 0.68rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

/* --- 锚点导航 --- */
.vm-anchor {
  position: sticky;
  top: var(--header-height);
  z-index: 800;
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

.vm-anchor-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.vm-anchor-inner::-webkit-scrollbar {
  display: none;
}

.vm-anchor-inner a {
  flex-shrink: 0;
  padding: 14px 22px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.vm-anchor-inner a:hover {
  color: var(--text-primary);
  border-bottom-color: var(--accent-magenta);
}

/* --- 章节标题 --- */
.vm-section-head {
  max-width: var(--max-width);
  margin: 0 auto 40px;
  padding: 0 20px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.vm-section-head--light .vm-section-num {
  color: rgba(255, 255, 255, 0.25);
}

.vm-section-num {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(254, 44, 85, 0.2);
  font-family: "Consolas", "Monaco", monospace;
  flex-shrink: 0;
}

.vm-section-head h2 {
  font-size: 1.55rem;
  margin-bottom: 6px;
}

.vm-section-head p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* --- 功能模块 --- */
.vm-modules {
  padding: 72px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.vm-module {
  max-width: var(--max-width);
  margin: 0 auto 56px;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.vm-module:last-child {
  margin-bottom: 0;
}

.vm-module--reverse .vm-module-media {
  order: 2;
}

.vm-module--reverse .vm-module-body {
  order: 1;
}

.vm-module-media {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.vm-module-media img {
  width: 100%;
  aspect-ratio: 9/14;
  object-fit: cover;
  object-position: top;
}

.vm-module-body h3 {
  font-size: 1.25rem;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.vm-module-body p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-bottom: 18px;
}

.vm-module-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.vm-module-tags li {
  font-size: 0.75rem;
  padding: 5px 14px;
  border-radius: 50px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

/* --- 胶片画廊 --- */
.vm-gallery {
  padding: 72px 0 48px;
}

.vm-film {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0 20px 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-magenta) var(--bg-card);
}

.vm-film-item {
  flex: 0 0 200px;
  scroll-snap-align: start;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: transform 0.2s, border-color 0.2s;
}

.vm-film-item:hover {
  transform: translateY(-6px);
  border-color: var(--accent-magenta);
}

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

.vm-film-item figcaption {
  padding: 10px 12px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  text-align: center;
  border-top: 1px solid var(--border-color);
}

.vm-film-hint {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-secondary);
  opacity: 0.6;
}

/* --- 安装指南 --- */
.vm-install {
  padding: 72px 20px;
  background: linear-gradient(160deg, #1a0a14 0%, #12121a 40%, #0a1018 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.vm-install-grid {
  max-width: var(--max-width);
  margin: 0 auto 36px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.vm-step {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 28px 22px;
}

.vm-step-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  font-family: "Consolas", "Monaco", monospace;
  color: var(--accent-magenta);
  line-height: 1;
  margin-bottom: 14px;
  opacity: 0.7;
}

.vm-step h4 {
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.vm-step p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.vm-install-bar {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  padding: 16px 32px;
  gap: 24px;
}

.vm-install-bar-item {
  text-align: center;
}

.vm-install-bar-item strong {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.vm-install-bar-item span {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.vm-install-bar-divider {
  width: 1px;
  height: 32px;
  background: var(--border-color);
}

/* --- 全面解读区 --- */
.vm-article {
  padding: 72px 20px 80px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.vm-insight-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 56px;
  align-items: start;
}

/* 左侧目录 */
.vm-insight-toc {
  position: sticky;
  top: calc(var(--header-height) + 56px);
}

.vm-insight-toc > h4,
.vm-insight-toc-links h4 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.vm-insight-toc ol {
  list-style: none;
  counter-reset: toc;
  margin-bottom: 36px;
  border-left: 2px solid var(--border-color);
  padding-left: 0;
}

.vm-insight-toc li {
  counter-increment: toc;
}

.vm-insight-toc a {
  display: block;
  padding: 9px 0 9px 18px;
  font-size: 0.84rem;
  color: var(--text-secondary);
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: color 0.2s, border-color 0.2s;
}

.vm-insight-toc a:hover {
  color: var(--text-primary);
  border-left-color: var(--accent-magenta);
}

.vm-insight-toc-links ul {
  list-style: none;
}

.vm-insight-toc-links li {
  margin-bottom: 8px;
}

.vm-insight-toc-links a {
  font-size: 0.84rem;
  color: var(--text-primary);
}

.vm-insight-toc-links a:hover {
  color: var(--accent-cyan);
}

/* 右侧主内容 */
.vm-insight-main {
  min-width: 0;
}

.vm-insight-block {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 36px 40px;
  margin-bottom: 24px;
  scroll-margin-top: calc(var(--header-height) + 72px);
}

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

.vm-insight-head {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
}

.vm-insight-id {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Consolas", "Monaco", monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-magenta);
  background: rgba(254, 44, 85, 0.1);
  border: 1px solid rgba(254, 44, 85, 0.25);
  border-radius: 10px;
}

.vm-insight-head h2 {
  font-size: 1.25rem;
  line-height: 1.35;
}

.vm-insight-intro,
.vm-insight-foot {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.85;
  margin-bottom: 20px;
  text-align: justify;
}

.vm-insight-foot {
  margin-bottom: 0;
  margin-top: 20px;
}

.vm-insight-lead p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.85;
  margin-bottom: 14px;
  text-align: justify;
}

.vm-insight-lead p:last-child {
  margin-bottom: 0;
}

.vm-insight-lead strong {
  color: var(--text-primary);
}

/* 子面板 */
.vm-insight-panel {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 22px 24px;
  margin-bottom: 16px;
}

.vm-insight-panel:last-child {
  margin-bottom: 0;
}

.vm-insight-panel h3 {
  font-size: 0.95rem;
  color: var(--accent-cyan);
  margin-bottom: 10px;
}

.vm-insight-panel p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.8;
  text-align: justify;
}

.vm-insight-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.vm-tag-wall {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin: 14px 0 16px;
}

.vm-tag-wall span {
  font-size: 0.74rem;
  padding: 6px 4px;
  border-radius: 6px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  text-align: center;
}

/* 保障网格 */
.vm-benefit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  list-style: none;
}

.vm-benefit-grid li {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px 22px;
}

.vm-benefit-grid li.vm-benefit-wide {
  grid-column: 1 / -1;
}

.vm-benefit-grid strong {
  display: block;
  font-size: 0.92rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.vm-benefit-grid p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 功能网格 */
.vm-feat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  list-style: none;
  counter-reset: feat;
}

.vm-feat-grid li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 18px 20px;
}

.vm-feat-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(37, 244, 238, 0.08);
  border: 1px solid rgba(37, 244, 238, 0.2);
  border-radius: 8px;
}

.vm-feat-grid strong {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.vm-feat-grid p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* 技巧列表 */
.vm-tip-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.vm-tip-list li {
  padding: 16px 22px;
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.75;
  border-bottom: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
}

.vm-tip-list li:nth-child(2n) {
  border-right: none;
}

.vm-tip-list li:nth-last-child(-n+2) {
  border-bottom: none;
}

.vm-tip-list strong {
  color: var(--text-primary);
}

/* 系统要求 */
.vm-spec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.vm-spec-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px 20px;
  text-align: center;
}

.vm-spec-card strong {
  display: block;
  font-size: 1rem;
  color: var(--accent-magenta);
  margin-bottom: 10px;
}

.vm-spec-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --- FAQ 手风琴 --- */
.vm-faq {
  padding: 72px 20px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.vm-accordion {
  max-width: 720px;
  margin: 0 auto;
}

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

.vm-accordion-item[open] {
  border-color: rgba(254, 44, 85, 0.4);
}

.vm-accordion-item summary {
  padding: 18px 22px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.vm-accordion-item summary::after {
  content: "+";
  font-size: 1.2rem;
  color: var(--accent-magenta);
  font-weight: 400;
  transition: transform 0.2s;
}

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

.vm-accordion-item p {
  padding: 0 22px 18px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* --- 法律链接 --- */
.vm-legal {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 20px 64px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.vm-legal-link {
  display: block;
  padding: 24px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--bg-card);
  transition: border-color 0.2s, transform 0.2s;
}

.vm-legal-link:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
  color: var(--text-primary);
}

.vm-legal-link strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.vm-legal-link span {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* --- 响应式 --- */
@media (max-width: 960px) {
  .vm-module,
  .vm-module--reverse {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .vm-module--reverse .vm-module-media,
  .vm-module--reverse .vm-module-body {
    order: unset;
  }

  .vm-install-grid {
    grid-template-columns: 1fr 1fr;
  }

  .vm-insight-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .vm-insight-toc {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
  }

  .vm-insight-cols,
  .vm-benefit-grid,
  .vm-feat-grid,
  .vm-tip-list {
    grid-template-columns: 1fr;
  }

  .vm-tag-wall {
    grid-template-columns: repeat(4, 1fr);
  }

  .vm-spec-grid {
    grid-template-columns: 1fr;
  }

  .vm-tip-list li {
    border-right: none;
  }

  .vm-tip-list li:nth-last-child(-n+2) {
    border-bottom: 1px solid var(--border-color);
  }

  .vm-tip-list li:last-child {
    border-bottom: none;
  }

  .vm-benefit-grid li.vm-benefit-wide {
    grid-column: auto;
  }

  .vm-legal {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .vm-hero-stack {
    height: 260px;
  }

  .vm-hero-card {
    width: 110px;
  }

  .vm-hero-card--center {
    width: 130px;
  }

  .vm-hero-card--left {
    transform: translateX(calc(-100% - 40px)) rotate(-6deg);
  }

  .vm-hero-card--right {
    transform: translateX(40px) rotate(6deg);
  }

  .vm-hero-stats {
    flex-wrap: wrap;
  }

  .vm-hero-stats li {
    flex: 1 1 45%;
    border-bottom: 1px solid var(--border-color);
  }

  .vm-install-grid {
    grid-template-columns: 1fr;
  }

  .vm-install-bar {
    flex-direction: column;
    border-radius: 16px;
    gap: 12px;
  }

  .vm-install-bar-divider {
    width: 60%;
    height: 1px;
  }

  .vm-insight-toc {
    grid-template-columns: 1fr;
  }

  .vm-insight-block {
    padding: 24px 20px;
  }

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

  .vm-section-head {
    flex-direction: column;
    gap: 8px;
  }

  .vm-section-num {
    font-size: 2rem;
  }

  .vm-film-item {
    flex: 0 0 160px;
  }
}