/* roulang page: index */
:root {
  --primary: #0B7A3E;
  --primary-dark: #085C2E;
  --primary-light: #E3F2E9;
  --accent: #FF6B35;
  --accent-dark: #E5551F;
  --dark: #141816;
  --bg: #F6F7F4;
  --card: #FFFFFF;
  --text: #1F2421;
  --text-secondary: #5A6560;
  --border: #E4E8E5;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-pill: 999px;
  --shadow: 0 1px 3px rgba(0,0,0,.06);
  --shadow-hover: 0 8px 24px rgba(0,0,0,.10);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 15px;
}
img { max-width: 100%; display: block; }
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s, background .2s, border-color .2s, box-shadow .2s;
}
a:hover { color: var(--primary-dark); }
a:focus-visible {
  outline: 3px solid rgba(11,122,62,.18);
  outline-offset: 2px;
  border-radius: 4px;
}
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container { max-width: 1296px; margin: 0 auto; }

/* ===== 侧边导航 ===== */
.side-nav {
  width: 240px;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  background: var(--dark);
  display: flex;
  flex-direction: column;
  padding: 0 0 16px;
  z-index: 1000;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 20px 24px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  margin-bottom: 20px;
}
.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}
.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-icon svg { width: 20px; height: 20px; stroke: #fff; fill: none; stroke-width: 2; }
.brand-name {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-links { flex: 1; padding: 0 12px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  margin-bottom: 6px;
  border-radius: 8px;
  color: rgba(255,255,255,.8);
  font-size: 14px;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all .2s;
}
.nav-item:hover {
  color: #fff;
  background: rgba(255,255,255,.06);
}
.nav-item.active {
  color: #fff;
  background: rgba(255,255,255,.08);
  border-left-color: var(--accent);
  font-weight: 600;
}
.nav-item svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.8; flex-shrink: 0; }
.nav-bottom {
  padding: 18px 20px 12px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.nav-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,.7);
  font-size: 13px;
  margin-right: 14px;
  transition: color .2s;
  background: none;
  border: none;
  padding: 4px 0;
}
.nav-action:hover { color: var(--accent); }
.nav-action svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.nav-copyright {
  color: rgba(255,255,255,.4);
  font-size: 11px;
  margin-top: 12px;
  line-height: 1.5;
}

/* ===== 汉堡按钮 ===== */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

/* ===== 主内容区 ===== */
.main-area {
  margin-left: 240px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 520px;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  background-color: var(--dark);
  display: flex;
  align-items: flex-end;
  padding: 80px 48px 56px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20,24,22,.60), rgba(20,24,22,.15) 60%, #F6F7F4 100%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.25);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.hero h1 {
  font-size: clamp(32px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 16px;
}
.hero-highlight {
  color: var(--accent);
}
.hero-sub {
  color: rgba(255,255,255,.92);
  font-size: 18px;
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 620px;
}
.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 12px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.hero-stat {
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(4px);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-stat svg { width: 16px; height: 16px; stroke: var(--primary); fill: none; stroke-width: 2; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all .2s;
  white-space: nowrap;
}
.btn:active { transform: scale(.98); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); color: #fff; }
.btn-outline-light {
  background: rgba(20,24,22,.35);
  color: #fff;
  border-color: rgba(255,255,255,.7);
  backdrop-filter: blur(4px);
}
.btn-outline-light:hover { background: #fff; color: var(--dark); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline {
  background: #fff;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover { background: var(--primary-light); color: var(--primary-dark); }
.btn-sm { height: 32px; padding: 0 16px; font-size: 13px; border-radius: 6px; }

/* ===== 徽章 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
  line-height: 1.5;
}
.badge-accent { background: rgba(255,107,53,.12); color: var(--accent-dark); }

/* ===== 区块 ===== */
.section {
  max-width: 1296px;
  margin: 0 auto;
  padding: 64px 48px;
  width: 100%;
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
}
.section-header h2 {
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  position: relative;
  padding-left: 16px;
}
.section-header h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background: var(--accent);
}
.section-header .header-link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.section-header .header-link:hover { color: var(--primary-dark); }

/* ===== 专题合集目录 ===== */
.collection-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.collection-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow .3s, border-color .3s, transform .3s;
}
.collection-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.collection-card .card-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--border);
}
.collection-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s;
}
.collection-card:hover .card-img img { transform: scale(1.03); }
.card-body { padding: 20px; }
.card-body h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  transition: color .2s;
}
.collection-card:hover .card-body h3 { color: var(--primary); }
.card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
}
.card-body .badge-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ===== 精选条目 ===== */
.featured-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.featured-item {
  display: flex;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow .3s, border-color .3s;
}
.featured-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.featured-img {
  width: 240px;
  flex-shrink: 0;
  background-color: var(--border);
}
.featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}
.featured-body {
  padding: 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.featured-body .badge { margin-bottom: 10px; align-self: flex-start; }
.featured-body h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
  transition: color .2s;
}
.featured-item:hover .featured-body h3 { color: var(--primary); }
.featured-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}
.featured-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
}
.featured-meta time {
  font-size: 12px;
  color: var(--text-secondary);
}
.read-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap .2s, color .2s;
}
.read-more:hover { color: var(--primary-dark); gap: 8px; }

/* ===== 最新资讯动态 ===== */
.latest-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.latest-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow .3s, border-color .3s, transform .3s;
  display: flex;
  flex-direction: column;
}
.latest-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.latest-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.latest-time {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
}
.latest-card h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 10px;
}
.latest-card h3 a { color: var(--text); transition: color .2s; }
.latest-card h3 a:hover { color: var(--primary); }
.latest-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}
.latest-card .read-more { align-self: flex-start; }

/* ===== 空状态 ===== */
.empty-state {
  grid-column: 1 / -1;
  background: var(--card);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 64px 24px;
  text-align: center;
  color: var(--text-secondary);
}
.empty-state .empty-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border-radius: 50%;
}
.empty-state .empty-icon svg { width: 24px; height: 24px; stroke: var(--text-secondary); fill: none; stroke-width: 1.8; }
.empty-state p { font-size: 14px; margin-bottom: 16px; }

/* ===== 相关推荐 ===== */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow .3s, border-color .3s, transform .3s;
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.related-card .related-img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--border);
}
.related-card .related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s;
}
.related-card:hover .related-img img { transform: scale(1.03); }
.related-body { padding: 16px 18px; }
.related-body h3 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  transition: color .2s;
}
.related-card:hover .related-body h3 { color: var(--primary); }
.related-body .badge { font-size: 11px; }

/* ===== 收藏/分享 CTA ===== */
.cta-bookmark {
  max-width: 1200px;
  margin: 0 auto 64px;
  background: var(--primary-light);
  border: 2px dashed var(--primary);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
}
.cta-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--card);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
}
.cta-icon svg { width: 26px; height: 26px; stroke: var(--accent); fill: none; stroke-width: 1.8; }
.cta-bookmark h2 {
  font-size: clamp(22px, 2.2vw, 28px);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.cta-bookmark p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 24px;
}
.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s;
}
.faq-item:hover { border-color: var(--primary); }
.faq-item summary {
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  gap: 16px;
  transition: background .3s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 26px;
  font-weight: 400;
  color: var(--primary);
  line-height: 1;
  transition: transform .3s;
  flex-shrink: 0;
}
.faq-item[open] summary { border-left: 4px solid var(--primary); }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] {
  background: var(--primary-light);
  border-color: var(--primary);
}
.faq-body {
  padding: 0 20px 20px 24px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.75;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,.7);
  padding: 64px 48px 32px;
  margin-top: auto;
  border-top: 4px solid var(--primary);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  max-width: 1200px;
  margin: 0 auto 48px;
}
.footer-brand h3 {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,.6);
  line-height: 1.7;
  max-width: 360px;
}
.footer-links h4,
.footer-about h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-links a {
  display: block;
  color: rgba(255,255,255,.6);
  font-size: 14px;
  padding: 5px 0;
  transition: color .2s;
}
.footer-links a:hover { color: var(--accent); }
.footer-about p {
  font-size: 14px;
  color: rgba(255,255,255,.6);
  line-height: 1.7;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.4);
}

/* ===== 响应式 ===== */
@media (max-width: 991px) {
  .side-nav {
    width: 100%;
    height: 56px;
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    flex-direction: row;
    align-items: center;
    padding: 0 16px;
  }
  .brand {
    padding: 0;
    border-bottom: none;
    margin-bottom: 0;
    flex: 1;
  }
  .hamburger { display: flex; }
  .nav-links {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg);
    padding: 12px 16px;
    flex-direction: column;
    box-shadow: 0 12px 32px rgba(0,0,0,.12);
    z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-item {
    color: var(--text);
    font-size: 15px;
    padding: 12px 14px;
    margin-bottom: 4px;
    border-left: 3px solid transparent;
    border-radius: 8px;
  }
  .nav-item:hover {
    color: var(--primary);
    background: var(--primary-light);
  }
  .nav-item.active {
    color: var(--primary);
    background: var(--primary-light);
    border-left-color: var(--primary);
  }
  .nav-bottom { display: none; }
  .main-area {
    margin-left: 0;
    padding-top: 56px;
  }
  .hero { min-height: 480px; padding: 64px 32px 48px; }
  .collection-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 767px) {
  .section { padding: 48px 20px; }
  .hero { padding: 48px 20px 40px; min-height: 440px; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .featured-item { flex-direction: column; }
  .featured-img { width: 100%; }
  .featured-img img { aspect-ratio: 16 / 9; }
  .latest-grid { grid-template-columns: 1fr; }
  .cta-bookmark { margin: 0 20px 48px; padding: 32px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .site-footer { padding: 48px 20px 24px; }
}

@media (max-width: 640px) {
  .collection-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .hero-cta .btn { width: 100%; }
  .hero-stats { gap: 8px; }
  .hero-stat { padding: 6px 14px; font-size: 12px; }
}

/* roulang page: article */
:root {
  --primary: #0B7A3E;
  --primary-dark: #085C2E;
  --primary-light: #E3F2E9;
  --accent: #FF6B35;
  --accent-hover: #E5551F;
  --dark: #141816;
  --bg: #F6F7F4;
  --card: #FFFFFF;
  --text: #1F2421;
  --text-secondary: #5A6560;
  --border: #E4E8E5;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
  --shadow-hover: 0 8px 24px rgba(0,0,0,.10);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.75; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; background: none; border: none; }
input, textarea { font-family: inherit; }
ul, ol { list-style-position: inside; }
:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(11,122,62,.15); border-radius: 4px; }

/* 左侧全局导航 */
.site-sidebar {
  width: 240px;
  background: var(--dark);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  border-right: 1px solid rgba(255,255,255,.06);
}
.nav-brand {
  height: 72px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav-brand a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .5px;
  white-space: nowrap;
}
.nav-brand svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
}
.nav-links {
  flex: 1;
  padding: 24px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,.78);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  border-left: 3px solid transparent;
  transition: all .2s ease;
}
.nav-item svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  flex-shrink: 0;
}
.nav-item:hover {
  color: #fff;
  background: rgba(255,255,255,.06);
}
.nav-item.active {
  color: #fff;
  border-left-color: var(--accent);
  background: linear-gradient(90deg, rgba(255,107,53,.08), transparent);
}
.nav-bottom {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.nav-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.6);
  transition: color .2s;
}
.nav-action:hover { color: var(--accent); }
.nav-action svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}
.nav-copyright {
  font-size: 11px;
  color: rgba(255,255,255,.35);
  margin-top: 4px;
}

/* 移动端顶部导航 */
.mobile-header {
  display: none;
  height: 56px;
  background: var(--dark);
  padding: 0 20px;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 300;
}
.mobile-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .3px;
  white-space: nowrap;
}
.mobile-logo svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
}
.menu-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-sm);
  transition: background .2s;
}
.menu-toggle:hover { background: rgba(255,255,255,.08); }
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all .3s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 主内容区 */
.site-main {
  margin-left: 240px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.article-main {
  flex: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 40px 64px;
}

/* 面包屑 */
.breadcrumb-wrap {
  margin-bottom: 28px;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}
.breadcrumb a {
  transition: color .2s;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: #B0B8B4; }
.breadcrumb .current {
  font-weight: 600;
  color: var(--primary);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.breadcrumb .category-name {
  color: var(--text-secondary);
  font-weight: 500;
}

/* 文章头部 */
.article-post {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 56px 40px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.article-header {
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 28px;
}
.badge {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: .5px;
  margin-bottom: 14px;
}
.article-header h1 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 12px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}
.meta-date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-date svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}

/* 正文排版 */
.article-content {
  max-width: 760px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.85;
}
.article-content p {
  margin-bottom: 22px;
}
.article-content h2 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--text);
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  padding: 16px 24px;
  border-radius: 0 8px 8px 0;
  margin: 24px 0;
  color: var(--text);
  font-size: 15px;
}
.article-content img {
  border-radius: var(--radius-lg);
  margin: 24px auto;
}
.article-content ul,
.article-content ol {
  margin: 16px 0 24px;
  padding-left: 24px;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover { color: var(--primary-dark); }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  font-size: 14px;
}
.article-content th,
.article-content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.article-content th {
  background: var(--bg);
  font-weight: 600;
}
.article-content pre {
  background: var(--dark);
  color: #E8EEE9;
  padding: 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.6;
}
.article-content code {
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}
.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

/* 空状态 */
.empty-state {
  border: 2px dashed #D0D5D2;
  border-radius: var(--radius-lg);
  padding: 64px 24px;
  text-align: center;
  background: var(--bg);
}
.empty-state svg {
  width: 48px;
  height: 48px;
  fill: none;
  stroke: #A0A8A4;
  stroke-width: 1.5;
  margin: 0 auto 16px;
}
.empty-state p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px;
  transition: all .2s ease;
  white-space: nowrap;
}
.btn:active { transform: scale(.98); }
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: var(--accent-hover);
  color: #fff;
}
.btn-outline {
  background: #fff;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.btn-secondary {
  background: rgba(255,255,255,.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,.4);
}
.btn-secondary:hover {
  background: #fff;
  color: var(--dark);
}

/* 上一篇/下一篇 */
.article-pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.pagination-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all .2s ease;
  position: relative;
}
.pagination-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.pagination-card.next { align-items: flex-end; text-align: right; }
.pagination-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: .5px;
}
.pagination-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  transition: color .2s;
}
.pagination-card:hover .pagination-title { color: var(--primary); }

/* 返回入口 */
.back-entry {
  margin-bottom: 32px;
  text-align: center;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--card);
  transition: all .2s ease;
}
.back-link:hover {
  color: var(--primary);
  border-color: var(--primary);
}
.back-link svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

/* 相关阅读 */
.related-section {
  margin-bottom: 40px;
}
.related-section h2 {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 700;
  margin-bottom: 20px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.related-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .25s ease;
}
.related-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.related-img {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--border);
}
.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.related-card:hover .related-img img {
  transform: scale(1.03);
}
.related-card h3 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  padding: 14px 16px 6px;
  color: var(--text);
  transition: color .2s;
}
.related-card:hover h3 { color: var(--primary); }
.related-card .tag {
  display: inline-block;
  font-size: 12px;
  color: var(--accent);
  font-weight: 500;
  padding: 0 16px 14px;
}

/* CTA 区块 */
.cta-section {
  background: var(--primary-light);
  border: 2px dashed rgba(11,122,62,.3);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  margin-bottom: 40px;
}
.cta-section h2 {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.cta-section p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.cta-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-actions .btn { height: 40px; padding: 0 20px; font-size: 13px; }

/* 页脚 */
.site-footer {
  background: var(--dark);
  border-top: 4px solid var(--primary);
  padding: 48px 40px 24px;
  margin-top: auto;
}
.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}
.footer-brand h3 {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.footer-brand p {
  color: rgba(255,255,255,.6);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
}
.footer-links h4,
.footer-about h4 {
  color: rgba(255,255,255,.9);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
}
.footer-links a {
  display: block;
  color: rgba(255,255,255,.6);
  font-size: 14px;
  padding: 4px 0;
  transition: color .2s;
}
.footer-links a:hover { color: var(--accent); }
.footer-about p {
  color: rgba(255,255,255,.6);
  font-size: 14px;
  line-height: 1.7;
}
.footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,.08);
  text-align: center;
}
.footer-bottom p {
  color: rgba(255,255,255,.4);
  font-size: 13px;
}

/* 响应式 */
@media (max-width: 991px) {
  .site-sidebar { display: none; }
  .mobile-header { display: flex; }
  .site-main { margin-left: 0; }
  .mobile-menu {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 250;
    padding: 16px;
    overflow-y: auto;
  }
  .mobile-menu.open { display: block; }
  .mobile-menu .nav-links {
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 8px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
  }
  .mobile-menu .nav-item {
    color: var(--text);
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }
  .mobile-menu .nav-item:last-child { border-bottom: none; }
  .mobile-menu .nav-item:hover { background: var(--primary-light); color: var(--primary-dark); }
  .mobile-menu .nav-item.active {
    border-left: 3px solid var(--accent);
    background: var(--primary-light);
    color: var(--primary);
  }
  .article-main { padding: 24px 20px 48px; }
  .article-post { padding: 32px 28px 28px; }
  .site-footer { padding: 40px 24px 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}

@media (max-width: 767px) {
  .related-grid { grid-template-columns: 1fr; }
  .article-pagination { grid-template-columns: 1fr; }
  .pagination-card.next { align-items: flex-start; text-align: left; }
  .article-post { padding: 24px 20px; }
  .breadcrumb .current { max-width: 200px; }
  .cta-section { padding: 32px 20px; }
}

@media (max-width: 520px) {
  .article-main { padding: 16px 14px 40px; }
  .article-post { padding: 20px 16px; }
  .article-header h1 { font-size: 22px; }
  .article-content { font-size: 15px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-about { display: none; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { width: 100%; }
}

@media (min-width: 992px) {
  .mobile-menu { display: none !important; }
}

/* roulang page: category1 */
:root {
  --green: #0B7A3E;
  --green-dark: #085C2E;
  --green-light: #E3F2E9;
  --orange: #FF6B35;
  --orange-dark: #E5551F;
  --dark: #141816;
  --page-bg: #F6F7F4;
  --card-bg: #FFFFFF;
  --text: #1F2421;
  --text-secondary: #5A6560;
  --border: #E4E8E5;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-pill: 999px;
  --shadow: 0 1px 3px rgba(0,0,0,.06);
  --shadow-hover: 0 8px 24px rgba(0,0,0,.10);
  --container: 1200px;
  --sidebar-w: 240px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--page-bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--green); text-decoration: none; transition: color .2s ease; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.layout { min-height: 100vh; }

.sidebar {
  position: fixed;
  left: 0; top: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--dark);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform .3s ease;
}
.sidebar-brand {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  flex-shrink: 0;
}
.brand-mark {
  width: 36px; height: 36px;
  background: var(--green);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.brand-mark svg { width: 22px; height: 22px; }
.brand-text {
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .4px;
  line-height: 1.35;
  text-decoration: none;
}
.brand-text:hover { color: var(--orange); }
.nav-links {
  flex: 1;
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  overflow-y: auto;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 14px;
  border-radius: 8px;
  color: rgba(255,255,255,.8);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  position: relative;
  transition: background .2s ease, color .2s ease;
}
.nav-item svg {
  width: 18px; height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  flex-shrink: 0;
}
.nav-item:hover { color: #fff; background: rgba(255,255,255,.06); }
.nav-item:focus-visible {
  outline: 3px solid rgba(255,107,53,.5);
  outline-offset: 1px;
  color: #fff;
}
.nav-item.active { color: #fff; background: rgba(255,255,255,.04); }
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -12px; top: 8px; bottom: 8px;
  width: 3px;
  background: var(--orange);
  border-radius: 0 3px 3px 0;
}
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  flex-shrink: 0;
}
.side-action {
  color: rgba(255,255,255,.7);
  font-size: 13px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: color .2s ease;
}
.side-action svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.side-action:hover { color: var(--orange); }
.sidebar-copy {
  color: rgba(255,255,255,.4);
  font-size: 12px;
  flex-basis: 100%;
  margin-top: 4px;
}

.sidebar-overlay {
  display: none;
}

.content-wrap {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.mobile-header {
  display: none;
}

.cat-hero {
  position: relative;
  padding: 88px 0 70px;
  background:
    linear-gradient(180deg, rgba(20,24,22,.72), rgba(20,24,22,.35) 55%, rgba(20,24,22,.12) 80%, #F6F7F4 100%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  background-color: #141816;
}
.cat-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.72);
  margin-bottom: 26px;
}
.breadcrumb a { color: rgba(255,255,255,.72); text-decoration: none; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: .5; }
.breadcrumb .current { color: rgba(255,255,255,.95); font-weight: 500; }
.cat-hero h1 {
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.cat-hero h1 .hl { color: var(--orange); }
.cat-hero .lead {
  color: rgba(255,255,255,.92);
  font-size: 16px;
  max-width: 660px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 26px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .15s ease, box-shadow .2s ease;
}
.btn:active { transform: scale(.98); }
.btn:focus-visible {
  outline: 3px solid rgba(255,107,53,.5);
  outline-offset: 2px;
}
.btn-orange { background: var(--orange); color: #fff; border-color: var(--orange); }
.btn-orange:hover { background: var(--orange-dark); border-color: var(--orange-dark); }
.btn-ghost {
  background: rgba(20,24,22,.35);
  color: #fff;
  border: 1px solid rgba(255,255,255,.75);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: #fff; color: var(--dark); border-color: #fff; }
.hero-stats {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.stat-item {
  background: rgba(255,255,255,.14);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: var(--radius-pill);
  padding: 9px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.stat-item strong {
  font-size: 20px;
  color: #fff;
  font-weight: 700;
  line-height: 1;
}
.stat-item span { font-size: 13px; color: rgba(255,255,255,.88); }

.cat-tabs {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 1px 3px rgba(0,0,0,.03);
}
.cat-tabs-row {
  display: flex;
  gap: 10px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  overflow-x: auto;
  scrollbar-width: thin;
}
.cat-tab {
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  white-space: nowrap;
  transition: all .2s ease;
}
.cat-tab:hover { border-color: var(--green); color: var(--green); }
.cat-tab:focus-visible { outline: 3px solid rgba(11,122,62,.2); outline-offset: 2px; }
.cat-tab.active { background: var(--green); border-color: var(--green); color: #fff; }

.cat-values { padding: 76px 0 44px; }
.section-head { margin-bottom: 40px; }
.section-head h2 {
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 10px;
  letter-spacing: .5px;
}
.section-head p { color: var(--text-secondary); font-size: 15px; max-width: 680px; }
.values-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.value-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}
.value-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: var(--green);
}
.value-num {
  font-size: 26px;
  font-weight: 800;
  color: var(--green-light);
  letter-spacing: 1px;
  line-height: 1;
  display: block;
}
.value-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 14px 0 10px;
  color: var(--text);
  line-height: 1.4;
}
.value-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}
.value-banner {
  grid-column: 1 / -1;
  background: var(--dark);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.value-banner-icon {
  width: 52px; height: 52px;
  background: var(--green);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.value-banner-icon svg { width: 26px; height: 26px; stroke: #fff; fill: none; stroke-width: 2; }
.value-banner .banner-text { flex: 1; min-width: 260px; }
.value-banner h3 { font-size: 20px; margin-bottom: 8px; }
.value-banner p { color: rgba(255,255,255,.75); font-size: 14px; line-height: 1.75; max-width: 760px; }

.cat-content { padding: 56px 0 44px; }
.content-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.topic-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
  display: flex;
  flex-direction: column;
}
.topic-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--green);
}
.topic-card .card-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
  background: var(--border);
}
.topic-card .card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.topic-card:hover .card-media img { transform: scale(1.04); }
.topic-card .card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.badge {
  display: inline-block;
  padding: 4px 13px;
  background: var(--green-light);
  color: var(--green-dark);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  align-self: flex-start;
}
.topic-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 14px 0 10px;
  line-height: 1.45;
  color: var(--text);
  transition: color .2s ease;
}
.topic-card:hover h3 { color: var(--green); }
.topic-card .card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}
.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary);
}
.more-link {
  color: var(--green);
  font-weight: 600;
  font-size: 13px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color .2s ease;
}
.more-link:hover { color: var(--orange); }
.more-link svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2; }

.steps-section {
  padding: 68px 0;
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-top: 20px;
}
.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
}
.step-item {
  position: relative;
  padding: 24px 20px 22px;
  border-left: 3px solid var(--green);
  background: var(--page-bg);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  transition: background .2s ease;
}
.step-item:hover { background: var(--green-light); }
.step-num {
  font-size: 13px;
  font-weight: 800;
  color: var(--orange);
  letter-spacing: 2px;
}
.step-item h3 { font-size: 17px; font-weight: 600; margin: 10px 0 6px; color: var(--text); }
.step-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

.faq-section { padding: 76px 0 48px; }
.faq-list { max-width: 860px; margin-top: 8px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card-bg);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .2s ease, background .2s ease;
}
.faq-item.open {
  border-color: var(--green);
  background: var(--green-light);
  box-shadow: 0 4px 14px rgba(11,122,62,.06);
}
.faq-q {
  width: 100%;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  background: none;
  border: none;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--text);
  transition: color .2s ease;
}
.faq-q:hover { color: var(--green); }
.faq-q:focus-visible { outline: 3px solid rgba(11,122,62,.2); outline-offset: 2px; }
.faq-arrow {
  width: 18px;
  height: 18px;
  position: relative;
  flex-shrink: 0;
  margin-left: 12px;
}
.faq-arrow::before,
.faq-arrow::after {
  content: '';
  position: absolute;
  background: var(--green);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
.faq-arrow::before { width: 14px; height: 2px; left: 2px; top: 8px; }
.faq-arrow::after { width: 2px; height: 14px; left: 8px; top: 2px; }
.faq-item.open .faq-arrow::after { transform: rotate(90deg); opacity: 0; }
.faq-a {
  display: none;
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}
.faq-item.open .faq-a { display: block; }

.cta-section { padding: 44px 0 76px; }
.cta-box {
  background: var(--green-light);
  border: 2px dashed var(--green);
  border-radius: var(--radius-lg);
  padding: 50px 32px;
  text-align: center;
}
.cta-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  background: #fff;
  border-radius: 50%;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}
.cta-icon svg { width: 26px; height: 26px; stroke: var(--orange); fill: none; stroke-width: 2; }
.cta-box h2 {
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.cta-box p { color: var(--text-secondary); margin-bottom: 26px; font-size: 15px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-green { background: var(--green); color: #fff; }
.btn-green:hover { background: var(--green-dark); }
.btn-outline-green {
  background: #fff;
  color: var(--green);
  border: 1px solid var(--green);
}
.btn-outline-green:hover { background: var(--green-light); }

.site-footer {
  background: var(--dark);
  border-top: 4px solid var(--green);
  padding: 56px 0 0;
  margin-top: auto;
}
.footer-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}
.footer-brand h3 {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: .5px;
}
.footer-brand p { color: rgba(255,255,255,.6); font-size: 14px; line-height: 1.7; }
.footer-links h4,
.footer-about h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: .5px;
}
.footer-links a {
  display: block;
  color: rgba(255,255,255,.65);
  font-size: 14px;
  text-decoration: none;
  margin-bottom: 12px;
  transition: color .2s ease, padding-left .2s ease;
}
.footer-links a:hover { color: var(--orange); padding-left: 4px; }
.footer-about p { color: rgba(255,255,255,.6); font-size: 14px; line-height: 1.7; }
.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 28px 24px 24px;
  border-top: 1px solid rgba(255,255,255,.08);
  margin-top: 44px;
  text-align: center;
}
.footer-bottom p { color: rgba(255,255,255,.45); font-size: 13px; }

@media (max-width: 991px) {
  .sidebar {
    transform: translateX(-100%);
    width: 260px;
    box-shadow: 4px 0 24px rgba(0,0,0,.2);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.show {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.45);
    z-index: 99;
  }
  .content-wrap { margin-left: 0; }
  .mobile-header {
    display: flex;
    position: sticky;
    top: 0;
    z-index: 90;
    height: 56px;
    background: var(--dark);
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,.1);
  }
  .mobile-brand {
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    text-decoration: none;
    letter-spacing: .4px;
  }
  .mobile-brand:hover { color: var(--orange); }
  .nav-toggle {
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    border-radius: 8px;
  }
  .nav-toggle:focus-visible { outline: 3px solid rgba(255,107,53,.5); outline-offset: 2px; }
  .nav-toggle span {
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform .25s ease, opacity .25s ease;
  }
  .nav-toggle.nav-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.nav-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.nav-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .cat-tabs { top: 56px; }
}

@media (max-width: 768px) {
  .cat-hero { padding: 64px 0 52px; }
  .cat-hero h1 { font-size: 30px; }
  .hero-stats { gap: 10px; }
  .stat-item { padding: 8px 16px; }
  .stat-item strong { font-size: 17px; }
  .stat-item span { font-size: 12px; }
  .values-grid { grid-template-columns: 1fr; }
  .value-banner { padding: 26px 24px; }
  .content-grid-2 { grid-template-columns: 1fr; }
  .steps-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { margin-top: 32px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .cat-hero .container { padding: 0 16px; }
  .cat-hero { padding: 52px 0 44px; }
  .cat-hero h1 { font-size: 26px; }
  .cat-hero .lead { font-size: 14.5px; }
  .hero-actions .btn { flex: 1; }
  .cat-tabs-row { padding: 12px 16px; }
  .content-grid-2 { gap: 18px; }
  .topic-card .card-body { padding: 20px; }
  .value-card { padding: 24px; }
  .cta-box { padding: 38px 20px; }
  .footer-grid { padding: 0 16px; }
  .footer-bottom { padding: 22px 16px 18px; }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
    :root {
      --color-primary: #0B7A3E;
      --color-primary-dark: #085C2E;
      --color-primary-light: #E3F2E9;
      --color-accent: #FF6B35;
      --color-accent-hover: #E5551F;
      --color-dark: #141816;
      --color-bg: #F6F7F4;
      --color-card: #FFFFFF;
      --color-text: #1F2421;
      --color-text-sub: #5A6560;
      --color-border: #E4E8E5;
      --color-border-light: #D0D5D2;
      --radius-lg: 12px;
      --radius-md: 8px;
      --radius-pill: 999px;
      --shadow-card: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-hover: 0 8px 24px rgba(0,0,0,0.10);
      --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --sidebar-w: 240px;
      --space-section: 64px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-main);
      font-size: 15px;
      line-height: 1.75;
      color: var(--color-text);
      background: var(--color-bg);
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; display: block; }
    a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
    button { font-family: inherit; cursor: pointer; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ===== 左侧导航 ===== */
    .site-sidebar {
      position: fixed;
      top: 0;
      left: 0;
      width: var(--sidebar-w);
      height: 100vh;
      background: var(--color-dark);
      display: flex;
      flex-direction: column;
      z-index: 100;
      border-right: 1px solid rgba(255,255,255,0.06);
    }

    .brand {
      height: 72px;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 0 24px;
      border-bottom: 1px solid rgba(255,255,255,0.06);
      flex-shrink: 0;
    }
    .brand-icon {
      width: 34px;
      height: 34px;
      background: var(--color-primary);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .brand-icon svg { width: 20px; height: 20px; fill: none; stroke: #fff; stroke-width: 2; }
    .brand-text {
      color: #fff;
      font-size: 16px;
      font-weight: 700;
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

    .nav-links {
      flex: 1;
      padding: 24px 0;
      display: flex;
      flex-direction: column;
      gap: 4px;
      overflow-y: auto;
    }
    .nav-item {
      display: flex;
      align-items: center;
      gap: 10px;
      height: 48px;
      padding: 0 24px;
      color: rgba(255,255,255,0.80);
      font-size: 14px;
      font-weight: 500;
      border-left: 3px solid transparent;
      transition: background 0.2s, color 0.2s, border-color 0.2s;
    }
    .nav-item svg {
      width: 18px;
      height: 18px;
      fill: none;
      stroke: currentColor;
      stroke-width: 1.8;
      stroke-linecap: round;
      stroke-linejoin: round;
      flex-shrink: 0;
    }
    .nav-item:hover {
      color: #fff;
      background: rgba(255,255,255,0.04);
    }
    .nav-item.active {
      color: #fff;
      border-left-color: var(--color-accent);
      background: linear-gradient(90deg, rgba(255,107,53,0.12), transparent);
      font-weight: 600;
    }
    .nav-item:focus-visible {
      outline: 3px solid rgba(11,122,62,0.5);
      outline-offset: -2px;
    }

    .sidebar-bottom {
      padding: 20px 24px;
      border-top: 1px solid rgba(255,255,255,0.06);
      flex-shrink: 0;
    }
    .icon-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: rgba(255,255,255,0.65);
      font-size: 13px;
      margin-right: 16px;
      transition: color 0.2s;
    }
    .icon-link:hover { color: #fff; }
    .icon-link svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.8; }
    .sidebar-bottom .copyright {
      color: rgba(255,255,255,0.35);
      font-size: 12px;
      margin-top: 12px;
      line-height: 1.5;
    }

    /* ===== 主内容区 ===== */
    .main-content {
      margin-left: var(--sidebar-w);
      min-height: 100vh;
    }

    /* ===== Hero ===== */
    .page-hero {
      position: relative;
      min-height: 340px;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      background: var(--color-dark);
    }
    .hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(20,24,22,0.72), rgba(20,24,22,0.35) 70%, var(--color-bg) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      padding: 80px 24px 120px;
      max-width: 720px;
    }
    .hero-badge {
      display: inline-block;
      background: rgba(255,255,255,0.14);
      border: 1px solid rgba(255,255,255,0.28);
      color: #fff;
      font-size: 13px;
      font-weight: 500;
      padding: 6px 18px;
      border-radius: var(--radius-pill);
      backdrop-filter: blur(4px);
      margin-bottom: 20px;
      letter-spacing: 1px;
    }
    .hero-title {
      color: #fff;
      font-size: clamp(30px, 3.4vw, 42px);
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 16px;
    }
    .hero-title .highlight {
      color: var(--color-accent);
    }
    .hero-desc {
      color: rgba(255,255,255,0.86);
      font-size: 16px;
      line-height: 1.7;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      gap: 14px;
      justify-content: center;
      flex-wrap: wrap;
    }

    /* ===== 按钮 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      padding: 0 28px;
      border-radius: var(--radius-md);
      font-size: 14px;
      font-weight: 600;
      border: 1px solid transparent;
      transition: all 0.2s ease;
      cursor: pointer;
      white-space: nowrap;
    }
    .btn:active { transform: scale(0.98); }
    .btn-primary {
      background: var(--color-primary);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--color-primary-dark);
      box-shadow: 0 4px 16px rgba(11,122,62,0.25);
    }
    .btn-accent {
      background: var(--color-accent);
      color: #fff;
    }
    .btn-accent:hover {
      background: var(--color-accent-hover);
      box-shadow: 0 4px 16px rgba(255,107,53,0.25);
    }
    .btn-outline {
      background: transparent;
      border-color: rgba(255,255,255,0.6);
      color: #fff;
    }
    .btn-outline:hover {
      background: rgba(255,255,255,0.86);
      color: var(--color-dark);
      border-color: transparent;
    }
    .btn-light-outline {
      background: #fff;
      border-color: var(--color-primary);
      color: var(--color-primary);
    }
    .btn-light-outline:hover {
      background: var(--color-primary-light);
    }
    .btn:focus-visible {
      outline: 3px solid rgba(11,122,62,0.35);
      outline-offset: 2px;
    }

    /* ===== 分类标签条 ===== */
    .cat-tabs-section {
      padding: 40px 0 0;
    }
    .cat-tabs {
      display: flex;
      gap: 10px;
      flex-wrap: nowrap;
      overflow-x: auto;
      padding: 4px 0 12px;
      -webkit-overflow-scrolling: touch;
    }
    .cat-tabs::-webkit-scrollbar { height: 4px; }
    .cat-tabs::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 4px; }
    .cat-tab {
      display: inline-flex;
      align-items: center;
      height: 36px;
      padding: 0 20px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 500;
      border: 1px solid var(--color-border);
      background: #fff;
      color: var(--color-text-sub);
      white-space: nowrap;
      transition: all 0.2s;
    }
    .cat-tab:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
    }
    .cat-tab.active {
      background: var(--color-primary);
      border-color: var(--color-primary);
      color: #fff;
      font-weight: 600;
    }
    .cat-tab:focus-visible {
      outline: 3px solid rgba(11,122,62,0.35);
      outline-offset: 2px;
    }

    /* ===== 内容列表区 ===== */
    .content-section {
      padding: var(--space-section) 0;
    }
    .section-header {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      margin-bottom: 28px;
      gap: 16px;
      flex-wrap: wrap;
    }
    .section-header h2 {
      font-size: clamp(24px, 2.4vw, 32px);
      font-weight: 700;
      line-height: 1.3;
    }
    .section-header .section-link {
      font-size: 14px;
      color: var(--color-primary);
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .section-header .section-link:hover { color: var(--color-primary-dark); }

    .content-grid {
      display: grid;
      grid-template-columns: 1fr 360px;
      gap: 24px;
      align-items: start;
    }

    /* ===== 大图横向条 ===== */
    .feature-column {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .feature-card {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: box-shadow 0.25s, border-color 0.25s;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      box-shadow: var(--shadow-hover);
      border-color: var(--color-primary);
    }
    .feature-image {
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: var(--color-border);
    }
    .feature-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }
    .feature-card:hover .feature-image img {
      transform: scale(1.03);
    }
    .feature-body {
      padding: 20px 24px 24px;
    }
    .feature-tag {
      display: inline-block;
      background: var(--color-primary-light);
      color: var(--color-primary);
      font-size: 12px;
      font-weight: 600;
      padding: 3px 12px;
      border-radius: var(--radius-pill);
      margin-bottom: 10px;
    }
    .feature-title {
      font-size: 20px;
      font-weight: 600;
      line-height: 1.4;
      margin-bottom: 8px;
    }
    .feature-title a {
      transition: color 0.2s;
    }
    .feature-title a:hover {
      color: var(--color-primary);
    }
    .feature-desc {
      color: var(--color-text-sub);
      font-size: 14px;
      line-height: 1.7;
      margin-bottom: 12px;
    }
    .feature-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 12px;
      color: var(--color-text-sub);
      flex-wrap: wrap;
    }
    .feature-meta .card-link {
      color: var(--color-primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      margin-left: auto;
      transition: color 0.2s;
    }
    .feature-meta .card-link:hover { color: var(--color-primary-dark); }

    /* ===== 右侧小卡 ===== */
    .side-column {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .side-card {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: box-shadow 0.25s, border-color 0.25s;
      display: flex;
      flex-direction: column;
    }
    .side-card:hover {
      box-shadow: var(--shadow-hover);
      border-color: var(--color-primary);
    }
    .side-card-image {
      overflow: hidden;
      aspect-ratio: 16 / 10;
      background: var(--color-border);
    }
    .side-card-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s;
    }
    .side-card:hover .side-card-image img { transform: scale(1.04); }
    .side-card-body { padding: 16px 18px 18px; }
    .side-card-tag {
      display: inline-block;
      background: var(--color-primary-light);
      color: var(--color-primary);
      font-size: 11px;
      font-weight: 600;
      padding: 2px 10px;
      border-radius: var(--radius-pill);
      margin-bottom: 8px;
    }
    .side-card-title {
      font-size: 15px;
      font-weight: 600;
      line-height: 1.4;
      margin-bottom: 6px;
    }
    .side-card-title a { transition: color 0.2s; }
    .side-card-title a:hover { color: var(--color-primary); }
    .side-card-desc {
      color: var(--color-text-sub);
      font-size: 13px;
      line-height: 1.65;
    }

    /* ===== FAQ 手风琴 ===== */
    .faq-section {
      padding: var(--space-section) 0 32px;
    }
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 780px;
      margin: 0 auto;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: 10px;
      overflow: hidden;
      transition: border-color 0.25s, box-shadow 0.25s;
    }
    .faq-item.open {
      border-color: var(--color-primary);
      box-shadow: 0 4px 16px rgba(11,122,62,0.08);
    }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 52px;
      padding: 12px 18px;
      background: #fff;
      border: none;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-text);
      text-align: left;
      transition: background 0.2s;
      gap: 16px;
    }
    .faq-question:hover { background: #fafbfa; }
    .faq-icon {
      position: relative;
      width: 18px;
      height: 18px;
      flex-shrink: 0;
      transition: transform 0.3s ease;
    }
    .faq-icon::before,
    .faq-icon::after {
      content: '';
      position: absolute;
      background: var(--color-text-sub);
      border-radius: 2px;
      transition: background 0.2s;
    }
    .faq-icon::before {
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 16px;
      height: 2px;
    }
    .faq-icon::after {
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 2px;
      height: 16px;
    }
    .faq-item.open .faq-icon { transform: rotate(45deg); }
    .faq-item.open .faq-icon::before,
    .faq-item.open .faq-icon::after { background: var(--color-primary); }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      border-left: 4px solid var(--color-primary);
      background: var(--color-primary-light);
      margin: 0 16px;
      border-radius: 0 0 6px 6px;
    }
    .faq-item.open .faq-answer {
      max-height: 300px;
      margin: 0 16px 16px;
    }
    .faq-answer p {
      padding: 14px 18px;
      font-size: 14px;
      line-height: 1.75;
      color: var(--color-text);
      background: var(--color-primary-light);
      border-radius: 0 0 6px 6px;
    }

    /* ===== CTA 区域 ===== */
    .cta-section {
      padding: 16px 0 64px;
    }
    .cta-inner {
      background: var(--color-primary-light);
      border: 2px dashed var(--color-primary);
      border-radius: var(--radius-lg);
      padding: 48px 32px;
      text-align: center;
    }
    .cta-icon {
      display: flex;
      justify-content: center;
      margin-bottom: 16px;
    }
    .cta-icon svg {
      width: 40px;
      height: 40px;
      fill: none;
      stroke: var(--color-accent);
      stroke-width: 1.8;
      stroke-linecap: round;
      stroke-linejoin: round;
    }
    .cta-title {
      font-size: clamp(20px, 2.2vw, 26px);
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--color-text);
    }
    .cta-desc {
      color: var(--color-text-sub);
      font-size: 15px;
      margin-bottom: 24px;
    }
    .cta-actions {
      display: flex;
      gap: 12px;
      justify-content: center;
      flex-wrap: wrap;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      margin-left: var(--sidebar-w);
      background: var(--color-dark);
      border-top: 4px solid var(--color-primary);
      color: rgba(255,255,255,0.72);
    }
    .footer-grid {
      max-width: 1200px;
      margin: 0 auto;
      padding: 48px 24px 32px;
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      gap: 40px;
    }
    .footer-brand h3 {
      color: #fff;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .footer-brand p,
    .footer-about p {
      font-size: 14px;
      line-height: 1.7;
      color: rgba(255,255,255,0.60);
    }
    .footer-links h4,
    .footer-about h4 {
      color: #fff;
      font-size: 15px;
      margin-bottom: 14px;
      font-weight: 600;
    }
    .footer-links a {
      display: block;
      color: rgba(255,255,255,0.60);
      font-size: 14px;
      margin-bottom: 10px;
      transition: color 0.2s;
    }
    .footer-links a:hover { color: var(--color-accent); }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding: 20px 24px;
      text-align: center;
    }
    .footer-bottom p {
      font-size: 13px;
      color: rgba(255,255,255,0.40);
    }

    /* ===== 移动端菜单按钮 ===== */
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      background: transparent;
      border: none;
      position: relative;
      z-index: 200;
    }
    .menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: #fff;
      border-radius: 2px;
      margin: 4px auto;
      transition: all 0.3s;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 991px) {
      .site-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 56px;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 0 16px;
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.08);
      }
      .brand {
        height: 56px;
        border-bottom: none;
        padding: 0;
      }
      .brand-icon { width: 30px; height: 30px; }
      .brand-text { font-size: 15px; }
      .nav-links {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--color-dark);
        padding: 12px 0;
        max-height: calc(100vh - 56px);
        overflow-y: auto;
        flex-direction: column;
        gap: 0;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        opacity: 0;
        visibility: hidden;
        border-top: 1px solid rgba(255,255,255,0.06);
      }
      .site-sidebar.open .nav-links {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
      }
      .nav-item {
        height: 48px;
        padding: 0 20px;
        border-left: 3px solid transparent;
        border-bottom: 1px solid rgba(255,255,255,0.04);
      }
      .sidebar-bottom {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .main-content,
      .site-footer {
        margin-left: 0;
      }
      .content-grid {
        grid-template-columns: 1fr;
      }
      .side-column {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 16px;
      }
      .side-card {
        flex: 1 1 calc(50% - 8px);
        min-width: 220px;
      }
    }

    @media (max-width: 640px) {
      :root { --space-section: 48px; }
      .page-hero { min-height: 300px; }
      .hero-content { padding: 60px 20px 90px; }
      .hero-title { font-size: 28px; }
      .hero-desc { font-size: 15px; }
      .btn { height: 40px; padding: 0 20px; font-size: 13px; }
      .side-column { flex-direction: column; }
      .side-card { flex: 1 1 100%; min-width: 0; }
      .feature-body { padding: 16px 18px 18px; }
      .feature-title { font-size: 18px; }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: 36px 20px 24px;
      }
      .cta-inner { padding: 32px 20px; }
      .cta-actions { flex-direction: column; align-items: center; }
      .cta-actions .btn { width: 100%; max-width: 260px; }
    }