/* roulang page: index */
:root {
  --brand: #16A34A;
  --brand-dark: #15803D;
  --brand-light: #22C55E;
  --accent: #2563EB;
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --text: #1E293B;
  --text-2: #64748B;
  --text-3: #94A3B8;
  --border: #E2E8F0;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow-card: 0 1px 3px rgba(15,23,42,0.06), 0 1px 2px rgba(15,23,42,0.04);
  --shadow-hover: 0 10px 25px -5px rgba(15,23,42,0.12), 0 8px 10px -6px rgba(15,23,42,0.10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

.container-main { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.text-gradient { background: linear-gradient(135deg, #16A34A 0%, #0D9668 60%, #2563EB 140%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.card-hover { transition: all 0.18s ease-out; }
.card-hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--brand); color: #fff; font-weight: 600; border: none; border-radius: 10px; padding: 12px 24px; transition: all 0.18s ease-out; }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-1px); box-shadow: 0 8px 20px -6px rgba(22,163,74,0.4); }
.btn-primary:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(34,197,94,0.4); }
.btn-primary:active { transform: translateY(1px) scale(0.98); }
.btn-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: transparent; color: var(--text); font-weight: 600; border: 1.5px solid #CBD5E1; border-radius: 10px; padding: 10px 22px; transition: all 0.18s ease-out; }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); background: rgba(37,99,235,0.05); }
.btn-secondary:active { transform: translateY(1px) scale(0.98); }
.badge-dot { display: inline-flex; align-items: center; gap: 6px; background: rgba(22,163,74,0.12); color: var(--brand-dark); font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 999px; }
.section-title { font-size: 28px; font-weight: 800; line-height: 1.3; letter-spacing: -0.3px; color: var(--text); }
.section-desc { font-size: 15px; color: var(--text-2); line-height: 1.7; }

.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 20px 4px; background: none; border: none; text-align: left; font-size: 16px; font-weight: 600; color: var(--text); cursor: pointer; transition: color 0.15s; gap: 16px; }
.faq-q:hover { color: var(--brand-dark); }
.faq-icon { width: 28px; height: 28px; flex-shrink: 0; border-radius: 50%; background: rgba(22,163,74,0.1); display: flex; align-items: center; justify-content: center; font-size: 18px; transition: transform 0.2s; color: var(--brand); }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--brand); color: #fff; }
.faq-a { display: none; padding: 0 4px 20px; color: var(--text-2); font-size: 15px; line-height: 1.8; }

.sidebar-nav a { display: flex; align-items: center; gap: 12px; padding: 11px 14px; border-radius: 10px; font-size: 15px; font-weight: 500; color: #475569; transition: all 0.15s; position: relative; }
.sidebar-nav a:hover { background: #F1F5F9; color: var(--text); }
.sidebar-nav a.active { background: rgba(22,163,74,0.1); color: var(--brand-dark); font-weight: 600; }
.sidebar-nav a.active::before { content: ''; position: absolute; left: -16px; top: 50%; transform: translateY(-50%); width: 3px; height: 20px; background: var(--brand); border-radius: 99px; }
.sidebar-nav a:active { transform: scale(0.97); }

@media (max-width: 1023px) {
  body { padding-top: 56px; }
  .sidebar-desktop { display: none !important; }
}
@media (min-width: 1024px) {
  .mobile-topbar { display: none !important; }
  .drawer-overlay, .drawer-panel { display: none !important; }
}
.drawer-overlay { position: fixed; inset: 0; background: rgba(15,23,42,0.5); z-index: 40; opacity: 0; pointer-events: none; transition: opacity 0.25s; }
.drawer-overlay.active { opacity: 1; pointer-events: auto; }
.drawer-panel { position: fixed; top: 0; left: 0; bottom: 0; width: 280px; background: #fff; z-index: 50; transform: translateX(-100%); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); display: flex; flex-direction: column; }
.drawer-panel.active { transform: translateX(0); }

.hero-bg {
  background: linear-gradient(180deg, rgba(248,250,252,0.92) 0%, rgba(240,253,244,0.85) 100%),
              url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
}
.hero-bg-2 {
  background: linear-gradient(135deg, rgba(15,23,42,0.15), rgba(15,23,42,0.45)),
              url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
}

.v-clip-card { position: relative; overflow: hidden; }
.v-clip-card img { transition: transform 0.4s ease-out; }
.v-clip-card:hover img { transform: scale(1.06); }
.v-clip-card .card-shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(15,23,42,0) 40%, rgba(15,23,42,0.75) 100%); opacity: 0.85; transition: opacity 0.25s; }
.v-clip-card:hover .card-shade { opacity: 1; }

.h-scroll::-webkit-scrollbar { height: 4px; }
.h-scroll::-webkit-scrollbar-thumb { background: #E2E8F0; border-radius: 99px; }
.h-scroll::-webkit-scrollbar-track { background: transparent; }

.news-card:hover { border-color: var(--brand); box-shadow: var(--shadow-hover); }

@keyframes bounceDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}
.bounce-down { animation: bounceDown 2s ease-in-out infinite; }

@keyframes float-slow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-14px) rotate(5deg); }
}
.float-slow { animation: float-slow 7s ease-in-out infinite; }

@media (max-width: 640px) {
  .container-main { padding: 0 18px; }
  .section-title { font-size: 22px; }
}

/* roulang page: article */
:root {
  --brand: #16A34A;
  --brand-dark: #15803D;
  --brand-light: #F0FDF4;
  --secondary: #2563EB;
  --body: #1E293B;
  --muted: #64748B;
  --subtle: #94A3B8;
  --border: #E2E8F0;
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --radius-lg: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 3px rgba(15,23,42,0.06), 0 1px 2px rgba(15,23,42,0.04);
  --shadow-lg: 0 10px 25px -5px rgba(15,23,42,0.12), 0 8px 10px -6px rgba(15,23,42,0.10);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; }

/* ===== 侧边栏 ===== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 240px;
  background: #fff;
  border-right: 1px solid var(--border);
  z-index: 50;
  display: flex;
  flex-direction: column;
}
.sidebar-logo {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 22px;
  border-bottom: 1px solid #F1F5F9;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, #22C55E, #16A34A);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  flex-shrink: 0;
}
.logo-text {
  font-size: 17px;
  font-weight: 800;
  color: #0F172A;
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.logo-text em { font-style: normal; color: var(--brand); }
.sidebar-nav {
  flex: 1;
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow-y: auto;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 500;
  color: #475569;
  transition: all 0.15s ease-out;
}
.sidebar-nav a:hover { background: #F1F5F9; color: #0F172A; }
.sidebar-nav a.active {
  background: rgba(22,163,74,0.10);
  color: var(--brand-dark);
  font-weight: 700;
  box-shadow: inset 3px 0 0 var(--brand);
}
.sidebar-nav a:active { transform: scale(0.98); }
.sidebar-tip {
  padding: 16px 20px;
  border-top: 1px solid #F1F5F9;
  font-size: 12px;
  color: var(--subtle);
}

/* ===== 移动端顶栏 ===== */
.mobile-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 56px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}
.mobile-header-btn {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--body);
  transition: background 0.15s;
}
.mobile-header-btn:hover { background: #F1F5F9; }

/* ===== 抽屉 ===== */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.5);
  z-index: 60;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.drawer-overlay.show { opacity: 1; pointer-events: auto; }
.drawer {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 280px;
  background: #fff;
  z-index: 70;
  transform: translateX(-100%);
  transition: transform 0.25s ease-out;
  display: flex;
  flex-direction: column;
}
.drawer.open { transform: translateX(0); }
.drawer-header {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid #F1F5F9;
}
.drawer-nav { flex: 1; padding: 16px 14px; overflow-y: auto; }
.drawer-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: #475569;
  transition: all 0.15s;
}
.drawer-nav a:hover { background: #F1F5F9; }
.drawer-nav a.active { background: rgba(22,163,74,0.10); color: var(--brand-dark); font-weight: 700; }
.drawer-footer {
  padding: 16px 20px;
  border-top: 1px solid #F1F5F9;
  font-size: 12px;
  color: var(--subtle);
}

/* ===== 主内容 ===== */
.main-content { min-height: calc(100vh - 56px); }

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--subtle);
  margin-bottom: 28px;
  letter-spacing: 0.01em;
}
.breadcrumb a { color: var(--muted); transition: color 0.15s; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { margin: 0 10px; color: #CBD5E1; }
.breadcrumb .current { color: #475569; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 280px; }

/* ===== 文章阅读区 ===== */
.article-cover {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}
.article-body {
  font-size: 16px;
  line-height: 1.9;
  color: #334155;
  word-break: break-word;
}
.article-body > * + * { margin-top: 1.25em; }
.article-body h2 {
  font-size: 23px;
  font-weight: 700;
  color: #0F172A;
  margin: 2em 0 0.8em;
  padding-left: 14px;
  border-left: 4px solid var(--brand);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 19px;
  font-weight: 600;
  color: #1E293B;
  margin-top: 1.6em;
  margin-bottom: 0.6em;
}
.article-body h4 {
  font-size: 16px;
  font-weight: 600;
  color: #334155;
  margin-top: 1.4em;
  margin-bottom: 0.5em;
}
.article-body p { margin-bottom: 1.4em; }
.article-body a { color: var(--secondary); text-decoration: underline; text-underline-offset: 3px; }
.article-body img {
  border-radius: 14px;
  margin: 1.6em auto;
  border: 1px solid #E9EDF2;
  box-shadow: var(--shadow-sm);
}
.article-body blockquote {
  background: var(--brand-light);
  border-left: 4px solid var(--brand);
  padding: 16px 20px;
  border-radius: 0 12px 12px 0;
  color: #475569;
}
.article-body ul, .article-body ol { padding-left: 1.5em; margin-bottom: 1.2em; }
.article-body ul li { list-style: disc; margin-bottom: 0.45em; }
.article-body ol li { list-style: decimal; margin-bottom: 0.45em; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 14px; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
.article-body th { background: #F8FAFC; font-weight: 600; }

/* ===== 动作按钮 ===== */
.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  color: #475569;
  font-size: 13.5px;
  font-weight: 500;
  transition: all 0.15s ease-out;
}
.action-btn:hover { border-color: var(--brand); color: var(--brand-dark); background: var(--brand-light); }
.action-btn:active { transform: scale(0.96); }

/* ===== 相关推荐 ===== */
.related-scroll {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 12px;
  scrollbar-width: none;
}
.related-scroll::-webkit-scrollbar { display: none; }
.related-card {
  flex: 0 0 210px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease-out;
}
.related-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.related-card-img { position: relative; overflow: hidden; }
.related-card-img img { width: 100%; aspect-ratio: 3/4; object-fit: cover; transition: transform 0.2s ease-out; }
.related-card:hover .related-card-img img { transform: scale(1.05); }
.related-card-badge {
  position: absolute;
  left: 10px;
  top: 10px;
  background: rgba(15,23,42,0.65);
  color: #fff;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.related-card-dur {
  position: absolute;
  right: 10px;
  bottom: 10px;
  background: rgba(15,23,42,0.72);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 6px;
}

/* ===== 按钮通用 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  transition: all 0.15s ease-out;
  border: none;
  outline: none;
}
.btn:focus-visible { box-shadow: 0 0 0 3px rgba(37,99,235,0.35); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-outline { background: #fff; border: 1.5px solid var(--border); color: #475569; }
.btn-outline:hover { background: #F1F5F9; color: var(--body); }
.btn:active { transform: translateY(1px); }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.15s;
}
.back-link:hover { color: var(--brand); }

/* ===== 响应式 ===== */
@media (min-width: 1024px) {
  .sidebar { display: flex; }
  .mobile-header { display: none; }
}
@media (max-width: 1023.98px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
}
@media (max-width: 640px) {
  .breadcrumb .current { max-width: 180px; }
}

/* roulang page: category1 */
:root {
      --primary: #16A34A;
      --primary-dark: #15803D;
      --primary-light: #DCFCE7;
      --accent: #2563EB;
      --accent-light: #EFF6FF;
      --bg: #F8FAFC;
      --surface: #FFFFFF;
      --text: #1E293B;
      --text-secondary: #64748B;
      --text-muted: #94A3B8;
      --border: #E2E8F0;
      --radius-lg: 16px;
      --radius-md: 10px;
      --shadow-card: 0 1px 3px rgba(15,23,42,0.06), 0 1px 2px rgba(15,23,42,0.04);
      --shadow-hover: 0 10px 25px -5px rgba(15,23,42,0.12), 0 8px 10px -6px rgba(15,23,42,0.10);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: system-ui, -apple-system, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; }
    button { font-family: inherit; outline: none; }
    .container-main { max-width: 1280px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
    .main-content { padding-left: 0; min-height: 100vh; }
    @media (min-width: 1024px) {
      .main-content { padding-left: 240px; }
    }

    /* 桌面侧边栏 */
    .desktop-sidebar {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: 240px;
      background: #fff;
      border-right: 1px solid var(--border);
      z-index: 40;
      display: none;
      flex-direction: column;
    }
    @media (min-width: 1024px) {
      .desktop-sidebar { display: flex; }
    }
    .sidebar-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      height: 64px;
      padding: 0 20px;
      border-bottom: 1px solid var(--border);
      flex-shrink: 0;
    }
    .sidebar-logo-text {
      font-size: 17px;
      font-weight: 800;
      color: var(--text);
      white-space: nowrap;
    }
    .sidebar-logo-text span { color: var(--primary); }
    .sidebar-bottom {
      padding: 16px 20px;
      border-top: 1px solid var(--border);
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 侧边栏导航 */
    .sidebar-nav { display: flex; flex-direction: column; }
    .sidebar-nav a {
      position: relative;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 14px;
      border-radius: 10px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-secondary);
      transition: all 0.15s ease-out;
    }
    .sidebar-nav a:hover { background: #F1F5F9; color: var(--text); }
    .sidebar-nav a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
    .sidebar-nav a.active {
      background: var(--primary-light);
      color: var(--primary-dark);
      font-weight: 600;
    }
    .sidebar-nav a.active::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 3px;
      height: 20px;
      background: var(--primary);
      border-radius: 0 3px 3px 0;
    }
    .sidebar-nav a:active { transform: scale(0.98); }

    /* 移动端 */
    .mobile-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 56px;
      background: #fff;
      border-bottom: 1px solid var(--border);
      z-index: 50;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 16px;
    }
    @media (min-width: 1024px) {
      .mobile-header { display: none; }
    }
    .mobile-menu-btn {
      width: 40px;
      height: 40px;
      border: none;
      background: #F1F5F9;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text);
      transition: background 0.15s;
    }
    .mobile-menu-btn:hover { background: #E2E8F0; }
    .mobile-menu-btn:active { transform: scale(0.96); }
    .mobile-logo {
      font-size: 16px;
      font-weight: 800;
      color: var(--text);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .mobile-logo span { color: var(--primary); }

    .drawer-overlay {
      position: fixed;
      inset: 0;
      background: rgba(15, 23, 42, 0.45);
      z-index: 60;
      display: none;
      opacity: 0;
      transition: opacity 0.2s ease-out;
    }
    .drawer-overlay.show { display: block; opacity: 1; }
    .drawer {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: 280px;
      background: #fff;
      z-index: 70;
      transform: translateX(-100%);
      transition: transform 0.25s ease-out;
      display: flex;
      flex-direction: column;
    }
    .drawer.show { transform: translateX(0); }
    .drawer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      height: 64px;
      padding: 0 20px;
      border-bottom: 1px solid var(--border);
      font-size: 17px;
      font-weight: 800;
      color: var(--text);
    }
    .drawer-logo span { color: var(--primary); }

    /* Hero */
    .cat-hero {
      position: relative;
      background-size: cover;
      background-position: center center;
      overflow: hidden;
    }
    .cat-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(248,250,252,0.94) 0%, rgba(248,250,252,0.82) 50%, rgba(248,250,252,0.96) 100%);
    }
    .cat-hero .hero-content { position: relative; z-index: 10; }

    /* 通用卡片 */
    .feature-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      transition: all 0.2s ease-out;
    }
    .feature-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    /* 视频卡片 */
    .video-card {
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: all 0.18s ease-out;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .video-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: rgba(22, 163, 74, 0.3);
    }
    .video-thumb {
      position: relative;
      aspect-ratio: 3 / 4;
      overflow: hidden;
      background: #F1F5F9;
    }
    .video-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.2s ease-out;
    }
    .video-card:hover .video-thumb img { transform: scale(1.05); }
    .video-duration {
      position: absolute;
      bottom: 8px;
      right: 8px;
      background: rgba(15, 23, 42, 0.72);
      color: #fff;
      font-size: 11px;
      font-weight: 500;
      padding: 1px 8px;
      border-radius: 6px;
      letter-spacing: 0.3px;
    }
    .video-card-body { padding: 14px; display: flex; flex-direction: column; flex: 1; }

    /* 按钮 */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      background: var(--primary);
      color: #fff;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      transition: all 0.15s ease-out;
      border: none;
      line-height: 1.6;
    }
    .btn-primary:hover { background: var(--primary-dark); }
    .btn-primary:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.4); }
    .btn-primary:active { transform: translateY(1px); }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      background: rgba(255,255,255,0.7);
      color: var(--text);
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      border: 1.5px solid var(--border);
      transition: all 0.15s ease-out;
      line-height: 1.6;
    }
    .btn-outline:hover { background: var(--accent-light); border-color: var(--accent); color: var(--accent); }
    .btn-outline:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3); }
    .btn-outline:active { transform: translateY(1px); }

    .btn-white {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      background: #fff;
      color: var(--primary-dark);
      font-weight: 700;
      font-size: 15px;
      padding: 12px 30px;
      border-radius: var(--radius-md);
      transition: all 0.15s ease-out;
      border: none;
    }
    .btn-white:hover { background: #F0FDF4; transform: translateY(-1px); }
    .btn-white:active { transform: translateY(1px); }

    .btn-buy {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 12px;
      font-weight: 600;
      color: var(--accent);
      background: var(--accent-light);
      padding: 5px 14px;
      border-radius: 999px;
      transition: all 0.15s ease-out;
      border: none;
    }
    .btn-buy:hover { background: var(--accent); color: #fff; }
    .btn-buy:active { transform: scale(0.96); }

    /* 标签 */
    .tag-badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 12px;
      font-weight: 500;
      padding: 2px 10px;
      border-radius: 999px;
      background: #F1F5F9;
      color: var(--text-secondary);
      line-height: 1.5;
    }
    .tag-badge.hot { background: #FEF2F2; color: #DC2626; }
    .tag-badge.new { background: var(--primary-light); color: var(--primary-dark); }
    .tag-badge.blue { background: var(--accent-light); color: var(--accent); }

    /* 区块标题 */
    .section-title {
      font-size: 26px;
      font-weight: 800;
      line-height: 1.3;
      color: var(--text);
      letter-spacing: -0.02em;
    }
    @media (max-width: 640px) {
      .section-title { font-size: 22px; }
    }
    .section-subtitle {
      font-size: 15px;
      color: var(--text-secondary);
      margin-top: 6px;
    }

    /* 指南长条 */
    .guide-block {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 20px 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      background: #fff;
      box-shadow: var(--shadow-card);
      transition: all 0.2s ease-out;
    }
    .guide-block:hover {
      box-shadow: var(--shadow-hover);
      transform: translateX(4px);
      border-color: var(--primary);
    }
    .guide-block:active { transform: translateX(2px) scale(0.99); }

    /* FAQ */
    .faq-list { border-top: 1px solid var(--border); }
    .faq-item { border-bottom: 1px solid var(--border); }
    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      padding: 18px 4px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      cursor: pointer;
      background: none;
      border: none;
      width: 100%;
      text-align: left;
      transition: color 0.15s;
    }
    .faq-question:hover { color: var(--primary-dark); }
    .faq-question:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 6px; }
    .faq-icon {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      border: 1.5px solid var(--text-muted);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-style: normal;
      transition: all 0.15s ease-out;
      color: var(--text-muted);
      flex-shrink: 0;
      line-height: 1;
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      border-color: var(--primary);
      color: var(--primary);
    }
    .faq-answer {
      display: none;
      padding: 0 4px 20px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.85;
    }
    .faq-item.open .faq-answer { display: block; }

    /* CTA 区块 */
    .cta-block {
      background: linear-gradient(135deg, #16A34A 0%, #059669 60%, #10B981 100%);
      border-radius: 20px;
      position: relative;
      overflow: hidden;
    }
    .cta-block::after {
      content: '🏀';
      position: absolute;
      right: -20px;
      bottom: -30px;
      font-size: 120px;
      opacity: 0.12;
      transform: rotate(-15deg);
    }

    /* 数据块 */
    .stat-item { position: relative; padding-left: 12px; }
    .stat-item::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 3px;
      height: 28px;
      background: linear-gradient(180deg, var(--primary), #10B981);
      border-radius: 3px;
    }

    /* 图文场景 */
    .scene-card {
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--border);
      padding: 24px;
      transition: all 0.2s ease-out;
      height: 100%;
    }
    .scene-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .scene-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      background: var(--primary-light);
      margin-bottom: 14px;
    }

    /* line-clamp */
    .line-clamp-2 {
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .line-clamp-1 {
      display: -webkit-box;
      -webkit-line-clamp: 1;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    @media (max-width: 639px) {
      .container-main { padding-left: 16px; padding-right: 16px; }
    }

/* roulang page: category3 */
:root {
      --primary: #16A34A;
      --primary-dark: #15803D;
      --primary-light: #F0FDF4;
      --accent: #2563EB;
      --accent-light: #EFF6FF;
      --bg: #F8FAFC;
      --text: #1E293B;
      --text-2: #64748B;
      --text-3: #94A3B8;
      --border: #E2E8F0;
      --radius-lg: 16px;
      --radius-sm: 10px;
      --shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
      --shadow-lg: 0 10px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.10);
      --shadow-modal: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
    }

    * {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      margin: 0;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button {
      cursor: pointer;
      font-family: inherit;
    }
    input, select, textarea {
      font-family: inherit;
    }

    .container-main {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    .section-space {
      padding-top: 72px;
      padding-bottom: 72px;
    }

    /* ===== Sidebar ===== */
    .sidebar {
      position: fixed;
      top: 0;
      left: 0;
      width: 240px;
      height: 100vh;
      background: #FFFFFF;
      border-right: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      z-index: 30;
    }
    .sidebar-logo {
      height: 64px;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 0 20px;
      border-bottom: 1px solid var(--border);
      flex-shrink: 0;
    }
    .sidebar-logo .logo-mark {
      width: 34px;
      height: 34px;
      border-radius: 10px;
      background: linear-gradient(135deg, #22C55E, #15803D);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: #fff;
      flex-shrink: 0;
    }
    .sidebar-logo .logo-text {
      font-size: 17px;
      font-weight: 800;
      color: #1E293B;
      letter-spacing: -0.2px;
      white-space: nowrap;
    }
    .sidebar-logo .logo-text span {
      color: var(--primary);
    }

    .sidebar-nav a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 16px;
      border-radius: 10px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-2);
      transition: all 0.15s ease-out;
      position: relative;
    }
    .sidebar-nav a:hover {
      background: #F1F5F9;
      color: var(--text);
    }
    .sidebar-nav a.active {
      background: var(--primary-light);
      color: var(--primary-dark);
      box-shadow: inset 3px 0 0 var(--primary);
    }
    .sidebar-nav a:active {
      transform: scale(0.98);
    }
    .sidebar-nav a svg {
      width: 19px;
      height: 19px;
      flex-shrink: 0;
    }
    .sidebar-bottom {
      margin-top: auto;
      padding: 16px 20px;
      border-top: 1px solid var(--border);
      font-size: 12px;
      color: var(--text-3);
    }

    /* ===== Mobile Header ===== */
    .mobile-header {
      position: sticky;
      top: 0;
      z-index: 35;
      height: 56px;
      padding: 0 16px;
      background: #fff;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .mobile-header .logo-text {
      font-size: 16px;
      font-weight: 800;
      color: #1E293B;
    }
    .mobile-header .logo-text span {
      color: var(--primary);
    }

    /* ===== Drawer ===== */
    .drawer-overlay {
      position: fixed;
      inset: 0;
      background: rgba(15, 23, 42, 0.5);
      z-index: 40;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.18s ease-out;
    }
    .drawer-overlay.open {
      opacity: 1;
      pointer-events: auto;
    }
    .drawer {
      position: fixed;
      top: 0;
      left: 0;
      width: 280px;
      height: 100vh;
      background: #fff;
      z-index: 50;
      transform: translateX(-100%);
      transition: transform 0.2s ease-out;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-modal);
    }
    .drawer.open {
      transform: translateX(0);
    }

    /* ===== Buttons ===== */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--primary);
      color: #fff;
      border: none;
      border-radius: 10px;
      padding: 12px 24px;
      font-size: 15px;
      font-weight: 700;
      transition: all 0.15s ease-out;
      box-shadow: 0 2px 6px rgba(22, 163, 74, 0.25);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      box-shadow: 0 4px 12px rgba(22, 163, 74, 0.35);
    }
    .btn-primary:focus {
      outline: none;
      box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.4);
    }
    .btn-primary:active {
      transform: translateY(1px);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: transparent;
      border: 1.5px solid #CBD5E1;
      color: var(--text);
      border-radius: 10px;
      padding: 11px 22px;
      font-size: 15px;
      font-weight: 600;
      transition: all 0.15s ease-out;
    }
    .btn-outline:hover {
      border-color: var(--accent);
      background: rgba(37, 99, 235, 0.08);
      color: var(--accent);
    }
    .btn-outline:focus {
      outline: none;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
    }
    .btn-outline:active {
      transform: translateY(1px);
    }

    /* ===== Hero ===== */
    .hero-bg {
      background-image: linear-gradient(145deg, rgba(15, 23, 42, 0.82) 0%, rgba(15, 23, 42, 0.55) 55%, rgba(22, 163, 74, 0.35) 100%), url('/assets/images/backpic/back-1.png');
      background-size: cover;
      background-position: center center;
      position: relative;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(4px);
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: 999px;
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 600;
      color: #fff;
    }

    /* ===== Cards ===== */
    .video-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: all 0.18s ease-out;
    }
    .video-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
    }
    .video-card:active {
      transform: translateY(-1px) scale(0.99);
    }
    .video-cover {
      position: relative;
      overflow: hidden;
      aspect-ratio: 3 / 4;
    }
    .video-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.18s ease-out;
    }
    .video-card:hover .video-cover img {
      transform: scale(1.05);
    }
    .video-cover .badge-top {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(15, 23, 42, 0.65);
      backdrop-filter: blur(4px);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 999px;
      letter-spacing: 0.3px;
    }
    .video-cover .badge-duration {
      position: absolute;
      bottom: 12px;
      right: 12px;
      background: rgba(15, 23, 42, 0.7);
      color: #fff;
      font-size: 11px;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 999px;
      font-variant-numeric: tabular-nums;
    }
    .vid-title {
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      font-size: 15px;
      font-weight: 700;
      line-height: 1.45;
      color: #1E293B;
    }
    .btn-equip {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      background: var(--accent-light);
      color: var(--accent);
      font-size: 13px;
      font-weight: 700;
      padding: 6px 14px;
      border-radius: 999px;
      transition: all 0.15s ease-out;
      white-space: nowrap;
    }
    .btn-equip:hover {
      background: #DBEAFE;
      transform: translateX(2px);
    }
    .btn-equip:active {
      transform: scale(0.96);
    }

    /* ===== Guide Block ===== */
    .guide-link {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      background: #fff;
      border: 1px solid var(--border);
      border-left: 4px solid var(--primary);
      border-radius: 12px;
      padding: 20px 24px;
      box-shadow: var(--shadow);
      transition: all 0.15s ease-out;
    }
    .guide-link:hover {
      box-shadow: var(--shadow-lg);
      border-left-color: var(--accent);
      transform: translateX(3px);
    }
    .guide-link h3 {
      font-size: 16px;
      font-weight: 700;
      margin: 0 0 4px;
    }
    .guide-link p {
      font-size: 13px;
      color: var(--text-2);
      margin: 0;
    }
    .guide-link .arrow {
      flex-shrink: 0;
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      transition: all 0.15s ease-out;
    }
    .guide-link:hover .arrow {
      background: var(--primary);
      color: #fff;
      transform: translateX(2px);
    }

    /* ===== Testimonials ===== */
    .testimonial-scroll {
      display: flex;
      gap: 20px;
      overflow-x: auto;
      scrollbar-width: thin;
      scrollbar-color: var(--border) transparent;
      padding-bottom: 12px;
    }
    .testimonial-scroll::-webkit-scrollbar {
      height: 6px;
    }
    .testimonial-scroll::-webkit-scrollbar-track {
      background: transparent;
    }
    .testimonial-scroll::-webkit-scrollbar-thumb {
      background: var(--border);
      border-radius: 999px;
    }
    .testimonial-card {
      flex: 0 0 280px;
      background: #F0FDF4;
      border: 1px solid #BBF7D0;
      border-radius: 16px;
      padding: 22px;
      transition: all 0.15s ease-out;
    }
    .testimonial-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-2px);
    }

    /* ===== FAQ ===== */
    .faq-item {
      border-bottom: 1px solid var(--border);
    }
    .faq-item:first-child {
      border-top: 1px solid var(--border);
    }
    .faq-q {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 4px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: #1E293B;
      transition: color 0.15s ease-out;
      background: none;
      border: none;
      text-align: left;
      width: 100%;
    }
    .faq-q:hover {
      color: var(--primary);
    }
    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.2s ease-out;
    }
    .faq-a-inner {
      padding: 0 4px 20px;
      font-size: 14px;
      line-height: 1.8;
      color: var(--text-2);
    }
    .faq-icon {
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      flex-shrink: 0;
      transition: transform 0.18s ease-out, background 0.18s ease-out;
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }

    /* ===== CTA Banner ===== */
    .cta-banner {
      background: linear-gradient(120deg, #F0FDF4 0%, #EFF6FF 100%);
      border: 1px solid #BBF7D0;
      border-radius: 24px;
    }

    /* ===== Footer ===== */
    footer a {
      color: #94A3B8;
      transition: color 0.15s ease-out;
    }
    footer a:hover {
      color: #4ADE80;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1023px) {
      .sidebar {
        display: none;
      }
      .desktop-nav-wrapper {
        display: none;
      }
      main, .footer-anchor {
        margin-left: 0;
      }
    }
    @media (min-width: 1024px) {
      .mobile-header {
        display: none;
      }
      main, .footer-anchor {
        margin-left: 240px;
      }
    }
    @media (max-width: 640px) {
      .section-space {
        padding-top: 48px;
        padding-bottom: 48px;
      }
      .guide-link {
        padding: 16px 18px;
      }
      .guide-link h3 {
        font-size: 15px;
      }
      .container-main {
        padding-left: 16px;
        padding-right: 16px;
      }
    }

/* roulang page: category2 */
:root {
      --brand: #16A34A;
      --brand-dark: #15803D;
      --brand-light: #22C55E;
      --accent: #2563EB;
      --bg: #F8FAFC;
      --card: #FFFFFF;
      --text: #1E293B;
      --text-secondary: #64748B;
      --text-muted: #94A3B8;
      --border: #E2E8F0;
      --radius: 16px;
      --radius-sm: 10px;
      --shadow: 0 1px 3px rgba(15,23,42,0.06), 0 1px 2px rgba(15,23,42,0.04);
      --shadow-hover: 0 10px 25px -5px rgba(15,23,42,0.12), 0 8px 10px -6px rgba(15,23,42,0.10);
      --shadow-drawer: 0 25px 50px -12px rgba(15,23,42,0.25);
      --transition: 150ms ease-out;
    }
    * {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      margin: 0;
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    button {
      font-family: inherit;
      cursor: pointer;
    }
    .container-main {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    /* 按钮体系 */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--brand);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      padding: 12px 26px;
      border-radius: 10px;
      border: 2px solid transparent;
      transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    }
    .btn-primary:hover {
      background: var(--brand-dark);
      transform: translateY(-1px);
      box-shadow: 0 8px 20px rgba(22,163,74,0.25);
    }
    .btn-primary:focus-visible {
      outline: none;
      box-shadow: 0 0 0 3px rgba(22,163,74,0.35);
    }
    .btn-primary:active {
      transform: translateY(1px);
    }
    .btn-outline-light {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: rgba(255,255,255,0.12);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      padding: 12px 24px;
      border-radius: 10px;
      border: 1.5px solid rgba(255,255,255,0.55);
      backdrop-filter: blur(4px);
      transition: background 150ms ease, border-color 150ms ease;
    }
    .btn-outline-light:hover {
      background: rgba(255,255,255,0.22);
      border-color: #fff;
    }
    .btn-white {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #fff;
      color: #15803D;
      font-weight: 700;
      font-size: 16px;
      padding: 13px 32px;
      border-radius: 10px;
      border: none;
      transition: transform 150ms ease, box-shadow 150ms ease;
    }
    .btn-white:hover {
      transform: translateY(-1px);
      box-shadow: 0 10px 24px rgba(0,0,0,0.15);
    }
    .btn-white:active {
      transform: translateY(1px);
    }
    /* 导航 */
    .sidebar-nav {
      display: flex;
      flex-direction: column;
    }
    .sidebar-nav a {
      position: relative;
      display: flex;
      align-items: center;
      gap: 12px;
      height: 44px;
      padding: 0 14px;
      border-radius: 12px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-secondary);
      transition: background 150ms ease, color 150ms ease, transform 100ms ease;
    }
    .sidebar-nav a:hover {
      background: #F1F5F9;
      color: var(--text);
    }
    .sidebar-nav a.active {
      background: rgba(22,163,74,0.10);
      color: #15803D;
      font-weight: 700;
    }
    .sidebar-nav a.active::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 4px;
      height: 22px;
      border-radius: 0 4px 4px 0;
      background: var(--brand);
    }
    .sidebar-nav a:active {
      transform: scale(0.98);
    }
    .nav-active-marker {
      display: inline-block;
      width: 4px;
      height: 22px;
      background: var(--brand);
      border-radius: 0 4px 4px 0;
    }
    /* 卡片 */
    .card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      transition: box-shadow var(--transition), transform var(--transition);
    }
    .card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    .video-card {
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      transition: box-shadow var(--transition), transform var(--transition);
    }
    .video-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    .video-card .cover {
      position: relative;
      overflow: hidden;
      aspect-ratio: 3 / 4;
    }
    .video-card .cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 200ms ease-out;
    }
    .video-card:hover .cover img {
      transform: scale(1.05);
    }
    .video-card .play-mask {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(15,23,42,0.15);
      opacity: 0;
      transition: opacity 200ms ease;
    }
    .video-card:hover .play-mask {
      opacity: 1;
    }
    .video-card .play-mask span {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: rgba(255,255,255,0.9);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    }
    /* 角标 */
    .chip {
      display: inline-flex;
      align-items: center;
      padding: 4px 12px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
    }
    .chip-black {
      background: rgba(15,23,42,0.75);
      color: #fff;
      backdrop-filter: blur(3px);
    }
    .chip-hot {
      background: #EF4444;
      color: #fff;
    }
    .chip-new {
      background: #F59E0B;
      color: #fff;
    }
    .chip-brand {
      background: rgba(22,163,74,0.12);
      color: #15803D;
    }
    /* 装备跟买按钮 */
    .buy-btn {
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--accent);
      color: #fff;
      font-size: 13px;
      font-weight: 600;
      padding: 9px 20px;
      border-radius: 8px;
      overflow: hidden;
      white-space: nowrap;
      transition: background 150ms ease;
    }
    .buy-btn:hover {
      background: #1D4ED8;
    }
    .buy-btn .btn-label {
      transition: transform 200ms ease-out;
    }
    .buy-btn .btn-hover-label {
      position: absolute;
      left: 0;
      right: 0;
      top: 0;
      bottom: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      transform: translateX(100%);
      transition: transform 200ms ease-out;
    }
    .buy-btn:hover .btn-label {
      transform: translateX(-100%);
    }
    .buy-btn:hover .btn-hover-label {
      transform: translateX(0);
    }
    /* FAQ */
    .faq-item {
      border-top: 1px solid var(--border);
    }
    .faq-item:last-of-type {
      border-bottom: 1px solid var(--border);
    }
    .faq-btn {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      padding: 20px 4px;
      font-size: 16px;
      font-weight: 600;
      background: transparent;
      border: none;
      text-align: left;
      color: var(--text);
      transition: color 150ms ease;
    }
    .faq-btn:hover {
      color: #15803D;
    }
    .faq-btn .icon-plus {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: #F1F5F9;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 400;
      flex-shrink: 0;
      transition: transform 200ms ease, background 200ms ease, color 200ms ease;
    }
    .faq-item.open .faq-btn .icon-plus {
      transform: rotate(45deg);
      background: var(--brand);
      color: #fff;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 250ms ease-out;
    }
    .faq-answer-inner {
      padding: 0 4px 20px;
      color: var(--text-secondary);
      font-size: 14px;
      line-height: 1.8;
    }
    /* 横向滚动 */
    .reviews-scroll {
      scrollbar-width: thin;
      scrollbar-color: #CBD5E1 transparent;
    }
    .reviews-scroll::-webkit-scrollbar {
      height: 4px;
    }
    .reviews-scroll::-webkit-scrollbar-track {
      background: transparent;
    }
    .reviews-scroll::-webkit-scrollbar-thumb {
      background: #CBD5E1;
      border-radius: 999px;
    }
    /* 工具 */
    .text-link {
      color: var(--brand);
      font-weight: 600;
      font-size: 14px;
      transition: color 150ms ease;
    }
    .text-link:hover {
      color: var(--brand-dark);
      text-decoration: underline;
    }
    .section-title {
      font-size: 26px;
      font-weight: 800;
      line-height: 1.35;
      letter-spacing: -0.02em;
    }
    .section-sub {
      color: var(--text-secondary);
      font-size: 15px;
    }
    /* 清单条目 hover */
    .guide-link {
      display: flex;
      align-items: center;
      gap: 18px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px 28px;
      transition: box-shadow 200ms ease, transform 200ms ease, border-color 200ms ease;
    }
    .guide-link:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
      border-color: #BBF7D0;
    }
    .guide-link .arrow {
      margin-left: auto;
      color: var(--text-muted);
      transition: color 150ms ease, transform 150ms ease;
    }
    .guide-link:hover .arrow {
      color: var(--brand);
      transform: translateX(4px);
    }
    /* 表单提示占位（本页无表单，保留基础） */
    /* 移动端抽屉 */
    .drawer-link {
      display: flex;
      align-items: center;
      gap: 12px;
      height: 46px;
      padding: 0 16px;
      border-radius: 12px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-secondary);
      transition: background 150ms ease, color 150ms ease;
    }
    .drawer-link:hover {
      background: #F1F5F9;
      color: var(--text);
    }
    .drawer-link.active {
      background: rgba(22,163,74,0.10);
      color: #15803D;
      font-weight: 700;
    }
    /* 图片文字可读性叠加 */
    .hero-overlay {
      background: linear-gradient(120deg, rgba(15,23,42,0.82) 0%, rgba(15,23,42,0.55) 45%, rgba(15,23,42,0.15) 100%);
    }
    /* 场景卡 */
    .scene-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px 24px;
      transition: box-shadow 200ms ease, transform 200ms ease;
    }
    .scene-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    /* 步骤条 */
    .step-item {
      text-align: center;
      padding: 28px 20px;
      background: #fff;
      border-radius: var(--radius);
      border: 1px solid #E8F5E9;
      transition: box-shadow 200ms ease, transform 200ms ease;
    }
    .step-item:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    .step-num {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: rgba(22,163,74,0.12);
      color: #15803D;
      font-weight: 800;
      font-size: 17px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }
    /* 口碑卡 */
    .review-card {
      min-width: 280px;
      background: #F0FDF4;
      border: 1px solid #DCFCE7;
      border-radius: var(--radius);
      padding: 24px;
      transition: box-shadow 200ms ease;
    }
    .review-card:hover {
      box-shadow: var(--shadow-hover);
    }
    @media (max-width: 1023px) {
      .container-main {
        padding-left: 16px;
        padding-right: 16px;
      }
      .section-title {
        font-size: 22px;
      }
    }
    @media (max-width: 640px) {
      .section-title {
        font-size: 20px;
      }
      .btn-primary,
      .btn-outline-light {
        width: 100%;
        max-width: 280px;
      }
      .guide-link {
        padding: 18px 20px;
      }
    }