/* roulang page: index */
:root {
  --bg-page: #F5F3EE;
  --bg-card: #FFFFFF;
  --bg-card-alt: #FAF8F4;
  --text-primary: #171713;
  --text-secondary: #3E3B36;
  --text-weak: #8B857E;
  --border-color: #E1DCD3;
  --brand-primary: #A77B47;
  --brand-hover: #8F6741;
  --brand-highlight: #C6A15B;
  --selected-bg: #D9C9A5;
  --accent-green: #3B4A3F;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(23,23,19,.04), 0 8px 24px rgba(23,23,19,.06);
  --shadow-hover: 0 2px 4px rgba(23,23,19,.06), 0 16px 40px rgba(23,23,19,.10);
  --font-sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; transition: color .3s ease; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; }

.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }

.section { padding: 100px 0; }

.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.section-header p {
  font-size: 15px;
  color: var(--text-weak);
  max-width: 560px;
  margin: 0 auto;
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(247,246,242,.96);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled {
  background: rgba(247,246,242,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 12px rgba(23,23,19,.04);
}
.navbar-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 4px;
  flex-shrink: 0;
}
.brand .brand-main {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}
.brand .brand-sub {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 1px;
  border-left: 2px solid var(--brand-primary);
  padding-left: 8px;
  line-height: 1.3;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
}
.nav-links a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: color .3s ease, border-color .3s ease;
}
.nav-links a:hover { color: var(--brand-primary); }
.nav-links a.active {
  color: var(--text-primary);
  border-bottom-color: var(--brand-primary);
}
.nav-cta {
  flex-shrink: 0;
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  background: var(--brand-primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .24s ease, transform .24s ease, box-shadow .24s ease;
}
.btn-cta:hover {
  background: var(--brand-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(167,123,71,.3);
  color: #fff;
}
.btn-cta:focus-visible {
  outline: 2px solid var(--brand-highlight);
  outline-offset: 2px;
}
.navbar-toggler {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border-color);
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 18px;
  color: var(--text-primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  height: 100vh;
  background: var(--bg-page);
  z-index: 1100;
  transition: right .3s cubic-bezier(.2,0,0,1);
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: -8px 0 24px rgba(23,23,19,.08);
}
.mobile-drawer.open { right: 0; }
.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(23,23,19,.4);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease, visibility .3s ease;
}
.drawer-overlay.active { opacity: 1; visibility: visible; }
.drawer-close {
  align-self: flex-end;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  background: #fff;
  border-radius: var(--radius-sm);
  font-size: 16px;
  cursor: pointer;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.drawer-nav a {
  display: flex;
  align-items: center;
  height: 48px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}
.drawer-nav a:hover { color: var(--brand-primary); }
.drawer-cta {
  margin-top: auto;
  width: 100%;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-primary);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius-sm);
}
.drawer-cta:hover { background: var(--brand-hover); color: #fff; }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 180px 0 80px;
  background: linear-gradient(rgba(23,23,19,.65), rgba(23,23,19,.55)), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: #fff;
}
.hero-content {
  max-width: 640px;
}
.hero h1 {
  font-size: 44px;
  line-height: 1.2;
  font-weight: 800;
  margin-bottom: 24px;
  color: #fff;
  letter-spacing: -0.5px;
}
.hero-sub {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,.85);
  margin-bottom: 36px;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 50px;
  padding: 0 32px;
  background: var(--brand-primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .24s ease, transform .24s ease, box-shadow .24s ease;
}
.btn-primary-custom:hover {
  background: var(--brand-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(167,123,71,.4);
  color: #fff;
}
.btn-secondary-custom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 50px;
  padding: 0 28px;
  background: transparent;
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,.65);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .24s ease, border-color .24s ease;
}
.btn-secondary-custom:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
  color: #fff;
}
.hero-stats {
  padding-top: 48px;
  border-top: 1px solid rgba(255,255,255,.18);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.hero-stat .stat-num {
  font-size: 30px;
  font-weight: 700;
  color: var(--brand-highlight);
  font-variant-numeric: tabular-nums;
}
.hero-stat .stat-label {
  font-size: 13px;
  color: rgba(255,255,255,.7);
  margin-top: 4px;
}

/* ===== Features ===== */
.features {
  background: var(--bg-page);
}
.feature-row {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 20px;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: background .3s ease, padding-left .3s ease;
}
.feature-row:first-child { border-top: 1px solid var(--border-color); }
.feature-row:hover { background: var(--bg-card-alt); padding-left: 32px; }
.feature-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--brand-primary);
  font-size: 18px;
  transition: background .3s ease, color .3s ease, border-color .3s ease;
}
.feature-row:hover .feature-icon {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
}
.feature-info { flex: 1; }
.feature-info h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
}
.feature-info p {
  font-size: 14px;
  color: var(--text-weak);
  margin: 0;
  max-width: 680px;
}
.feature-arrow {
  font-size: 18px;
  color: var(--brand-primary);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity .3s ease, transform .3s ease;
}
.feature-row:hover .feature-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ===== Scenarios ===== */
.scenarios {
  background: var(--bg-card);
}
.scenario-block {
  display: flex;
  align-items: center;
  gap: 56px;
  margin-bottom: 80px;
}
.scenario-block:last-child { margin-bottom: 0; }
.scenario-block:nth-child(even) { flex-direction: row-reverse; }
.scenario-media {
  flex: 1;
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.scenario-media img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}
.scenario-block:hover .scenario-media img { transform: scale(1.02); }
.scenario-text { flex: 1; }
.scenario-text .scenario-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-green);
  background: rgba(59,74,63,.08);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.scenario-text h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}
.scenario-text p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.scenario-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--brand-primary);
  border-bottom: 1px solid var(--brand-primary);
  padding-bottom: 2px;
  transition: color .3s ease, border-color .3s ease;
}
.scenario-link:hover {
  color: var(--brand-hover);
  border-bottom-color: transparent;
}
.scenario-link i { transition: transform .3s ease; }
.scenario-link:hover i { transform: translateX(4px); }

/* ===== Testimonials ===== */
.testimonials {
  background: var(--bg-page);
}
.testimonial-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.stat-card .stat-value {
  font-size: 40px;
  font-weight: 700;
  color: var(--brand-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.stat-card .stat-label-2 {
  font-size: 14px;
  color: var(--text-weak);
  margin-top: 8px;
}
.testimonial-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.testimonial-item {
  background: var(--bg-card);
  border-left: 3px solid var(--brand-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
}
.testimonial-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.testimonial-author {
  font-size: 13px;
  color: var(--text-weak);
  display: flex;
  align-items: center;
  gap: 8px;
}
.testimonial-author::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--brand-primary);
}

/* ===== Pricing ===== */
.pricing {
  background: var(--bg-card);
}
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: border-color .3s ease, box-shadow .3s ease;
}
.pricing-card:hover {
  border-color: var(--brand-primary);
  box-shadow: var(--shadow-hover);
}
.pricing-card.recommended {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: #fff;
  position: relative;
}
.pricing-card.recommended::before {
  content: '推荐';
  position: absolute;
  top: -1px;
  right: 24px;
  background: var(--accent-green);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  letter-spacing: 1px;
}
.pricing-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.pricing-price {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}
.pricing-desc {
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 24px;
}
.pricing-card.recommended .pricing-desc { color: rgba(255,255,255,.6); }
.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  flex: 1;
}
.pricing-features li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.pricing-card.recommended .pricing-features li { color: rgba(255,255,255,.85); }
.pricing-features li i {
  color: var(--brand-primary);
  font-size: 12px;
}
.pricing-card.recommended .pricing-features li i { color: var(--brand-highlight); }
.btn-pricing {
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background .24s ease, transform .24s ease, border-color .24s ease, color .24s ease;
}
.btn-pricing-light {
  background: var(--brand-primary);
  color: #fff;
  border: 1px solid var(--brand-primary);
}
.btn-pricing-light:hover { background: var(--brand-hover); color: #fff; transform: translateY(-2px); }
.btn-pricing-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.btn-pricing-outline:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.btn-pricing-dark {
  background: var(--brand-primary);
  color: #fff;
  border: 1px solid var(--brand-primary);
}
.btn-pricing-dark:hover { background: var(--brand-hover); color: #fff; transform: translateY(-2px); }

/* ===== FAQ ===== */
.faq {
  background: var(--bg-page);
}
.faq-wrapper {
  max-width: 720px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: background .3s ease, border-color .3s ease;
}
.faq-item.active {
  background: var(--bg-card-alt);
  border-color: var(--brand-primary);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  gap: 16px;
}
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--brand-primary);
  transition: transform .24s ease, background .24s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s cubic-bezier(.2,0,0,1);
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ===== News ===== */
.news {
  background: var(--bg-card);
}
.news-list {
  max-width: 840px;
  margin: 0 auto;
}
.news-item {
  display: flex;
  align-items: flex-start;
  gap: 28px;
  padding: 24px 16px;
  border-bottom: 1px solid var(--border-color);
  transition: background .3s ease, padding-left .3s ease;
}
.news-item:first-child { border-top: 1px solid var(--border-color); }
.news-item:hover { background: var(--bg-card-alt); padding-left: 24px; }
.news-meta {
  flex-shrink: 0;
  width: 160px;
}
.news-meta .news-date {
  display: block;
  font-size: 14px;
  color: var(--text-weak);
  font-variant-numeric: tabular-nums;
}
.news-meta .news-cat {
  display: inline-block;
  margin-top: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-green);
  background: rgba(59,74,63,.08);
  padding: 2px 10px;
  border-radius: 999px;
}
.news-body { flex: 1; }
.news-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.news-body p {
  font-size: 14px;
  color: var(--text-weak);
  margin: 0;
  line-height: 1.7;
}
.news-arrow {
  flex-shrink: 0;
  align-self: center;
  font-size: 18px;
  color: var(--brand-primary);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity .3s ease, transform .3s ease;
}
.news-item:hover .news-arrow {
  opacity: 1;
  transform: translateX(0);
}
.news-empty {
  text-align: center;
  padding: 48px 0;
  font-size: 15px;
  color: var(--text-weak);
  border-top: 1px solid var(--border-color);
}

/* ===== CTA Banner ===== */
.cta-banner {
  position: relative;
  padding: 72px 0;
  background: linear-gradient(rgba(23,23,19,.8), rgba(23,23,19,.75)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  text-align: center;
}
.cta-banner h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}
.cta-banner p {
  font-size: 15px;
  color: rgba(255,255,255,.8);
  max-width: 520px;
  margin: 0 auto 32px;
}
.btn-cta-large {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 52px;
  padding: 0 40px;
  background: var(--brand-primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .24s ease, transform .24s ease, box-shadow .24s ease;
}
.btn-cta-large:hover {
  background: var(--brand-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(167,123,71,.4);
  color: #fff;
}

/* ===== Footer ===== */
.site-footer {
  background: #171713;
  color: #F5F3EE;
  padding-top: 64px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand-area {
  flex: 1.6;
}
.footer-brand {
  font-size: 28px;
  font-weight: 800;
  color: #F5F3EE;
  display: block;
  margin-bottom: 12px;
}
.footer-brand-tag {
  font-size: 14px;
  color: #8B857E;
  max-width: 360px;
  line-height: 1.7;
}
.footer-links {
  flex: 1;
  display: flex;
  gap: 48px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #F5F3EE;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: #C9C4BB;
  padding: 6px 0;
  transition: color .3s ease;
}
.footer-col a:hover { color: var(--brand-highlight); }
.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #8B857E;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== Scroll Animation ===== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .32s cubic-bezier(.2,0,0,1), transform .32s cubic-bezier(.2,0,0,1);
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .navbar-toggler { display: flex; }
  .hero { padding: 140px 0 60px; }
  .hero h1 { font-size: 36px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .scenario-block, .scenario-block:nth-child(even) {
    flex-direction: column;
    gap: 32px;
  }
  .pricing-cards { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .pricing-card.recommended::before { right: auto; left: 24px; }
  .testimonial-list { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 32px; }
  .footer-links { flex-wrap: wrap; gap: 32px; }
}

@media (max-width: 767.98px) {
  .section { padding: 64px 0; }
  .section-header h2 { font-size: 26px; }
  .hero { padding: 120px 0 48px; }
  .hero h1 { font-size: 30px; }
  .hero-actions .btn-primary-custom, .hero-actions .btn-secondary-custom {
    width: 100%;
    justify-content: center;
  }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 20px; }
  .feature-row { padding: 20px 12px; gap: 16px; flex-wrap: wrap; }
  .feature-row:hover { padding-left: 16px; }
  .feature-icon { width: 40px; height: 40px; }
  .feature-info h3 { font-size: 15px; }
  .feature-info p { font-size: 13px; }
  .feature-arrow { display: none; }
  .testimonial-stats { grid-template-columns: 1fr; }
  .stat-card .stat-value { font-size: 32px; }
  .pricing-card { padding: 24px 20px; }
  .news-item { flex-direction: column; gap: 12px; padding: 20px 12px; }
  .news-item:hover { padding-left: 16px; }
  .news-meta { width: 100%; }
  .news-arrow { display: none; }
  .news-body h3 { font-size: 15px; }
  .cta-banner h2 { font-size: 26px; }
  .cta-banner p { font-size: 14px; }
  .btn-cta-large { width: 100%; justify-content: center; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 575.98px) {
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 16px; }
  .brand .brand-sub { display: none; }
  .brand-main { font-size: 24px; }
  .scenario-text h3 { font-size: 20px; }
  .scenario-text p { font-size: 14px; }
  .testimonial-item { padding: 24px 20px; }
  .faq-question { padding: 16px; font-size: 14px; }
  .faq-answer-inner { padding: 0 16px 16px; font-size: 13px; }
  .section-header { margin-bottom: 40px; }
  .section-header h2 { font-size: 24px; }
}

/* Bootstrap override */
.btn { border-radius: var(--radius-sm); }
.form-control:focus { border-color: var(--brand-primary); box-shadow: 0 0 0 2px rgba(167,123,71,.18); }

/* Accessibility */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--brand-highlight);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* roulang page: article */
:root {
  --bg-page: #F5F3EE;
  --bg-card: #FFFFFF;
  --bg-card-alt: #FAF8F4;
  --bg-dark: #171713;
  --text-primary: #171713;
  --text-secondary: #3E3B36;
  --text-weak: #8B857E;
  --border-color: #E1DCD3;
  --brand-primary: #A77B47;
  --brand-hover: #8F6741;
  --brand-highlight: #C6A15B;
  --brand-selection: #D9C9A5;
  --accent-green: #3B4A3F;
  --radius-btn: 4px;
  --radius-card: 6px;
  --radius-tag: 999px;
  --radius-img: 4px;
  --shadow-default: 0 1px 2px rgba(23,23,19,.04), 0 8px 24px rgba(23,23,19,.06);
  --shadow-hover: 0 2px 4px rgba(23,23,19,.06), 0 16px 40px rgba(23,23,19,.10);
  --font-sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-page);
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color .24s ease;
}

a:hover {
  color: var(--brand-hover);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid rgba(167,123,71,.18);
  outline-offset: 2px;
}

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

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  background: var(--brand-primary);
  color: #fff;
  border: 1px solid var(--brand-primary);
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: background .24s ease, border-color .24s ease, transform .24s ease, box-shadow .24s ease;
}

.btn-cta:hover {
  background: var(--brand-hover);
  border-color: var(--brand-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139,103,71,.2);
}

.btn-cta:active {
  transform: translateY(0);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: border-color .24s ease, color .24s ease, transform .24s ease;
}

.btn-outline:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transform: translateY(-2px);
}

.btn-outline:active {
  transform: translateY(0);
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--border-color);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.site-header.scrolled {
  background: rgba(247,246,242,.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-default);
}

.navbar-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-main {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.brand-sub {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  margin: 0;
}

.nav-links a {
  display: block;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 10px 0;
  border-bottom: 2px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a.active {
  color: var(--text-primary);
  border-bottom-color: var(--brand-primary);
}

.nav-cta {
  flex-shrink: 0;
}

.nav-cta .btn-cta {
  font-size: 14px;
  padding: 0 20px;
}

.navbar-toggler {
  display: none;
  border: none;
  background: transparent;
  font-size: 22px;
  color: var(--text-primary);
  padding: 8px 10px;
  cursor: pointer;
  border-radius: 4px;
  line-height: 1;
}

.navbar-toggler:hover {
  background: var(--bg-card-alt);
  color: var(--brand-hover);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  right: -320px;
  width: 320px;
  max-width: 85vw;
  height: 100vh;
  background: var(--bg-page);
  z-index: 1050;
  padding: 32px 28px;
  flex-direction: column;
  transition: right .32s ease;
  box-shadow: -12px 0 40px rgba(23,23,19,.1);
}

.mobile-menu.open {
  right: 0;
}

.mobile-menu .nav-links {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 40px 0 24px;
}

.mobile-menu .nav-links a {
  font-size: 16px;
  line-height: 48px;
  padding: 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-bottom-color: var(--border-color);
}

.mobile-menu .nav-links a:hover,
.mobile-menu .nav-links a.active {
  color: var(--text-primary);
  border-bottom-color: var(--brand-primary);
}

.mobile-menu .nav-cta {
  margin-top: auto;
  padding-bottom: 28px;
}

.mobile-menu .nav-cta .btn-cta {
  width: 100%;
  justify-content: center;
}

.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(23,23,19,.4);
  z-index: 1045;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease, visibility .3s ease;
}

.mobile-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* ===== Article Hero ===== */
.article-hero {
  padding: 56px 0 48px;
  background: var(--bg-page);
  border-bottom: 1px solid var(--border-color);
}

.article-hero-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 56px;
  align-items: center;
}

.article-hero-main {
  max-width: 720px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 24px;
  background: transparent;
  padding: 0;
}

.breadcrumb a {
  color: var(--text-weak);
  text-decoration: none;
  font-weight: 500;
  transition: color .2s ease;
}

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

.breadcrumb-sep {
  color: var(--border-color);
  font-size: 12px;
}

.breadcrumb-cat {
  font-weight: 500;
}

.breadcrumb-current {
  color: var(--text-secondary);
  font-weight: 400;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 320px;
}

.article-hero h1 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: var(--text-weak);
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta i {
  color: var(--brand-primary);
  font-size: 13px;
  width: auto;
}

.article-hero-cover img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-default);
  background: var(--bg-card-alt);
}

/* ===== Article Body ===== */
.article-body-wrap {
  padding: 64px 0 88px;
}

.article-content {
  max-width: 820px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
  word-break: break-word;
}

.article-content > *:first-child {
  margin-top: 0 !important;
}

.article-content > *:last-child {
  margin-bottom: 0 !important;
}

.article-content p {
  margin: 0 0 28px;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin: 56px 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin: 40px 0 16px;
}

.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 32px 0 12px;
}

.article-content a {
  color: var(--brand-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover {
  color: var(--brand-hover);
  text-decoration: none;
}

.article-content blockquote {
  margin: 36px 0;
  padding: 20px 28px;
  background: var(--bg-card-alt);
  border-left: 3px solid var(--brand-primary);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  color: var(--text-secondary);
  font-size: 15px;
}

.article-content ul,
.article-content ol {
  margin: 24px 0 28px;
  padding-left: 24px;
}

.article-content ul li,
.article-content ol li {
  margin-bottom: 10px;
  padding-left: 4px;
}

.article-content ul li::marker {
  color: var(--brand-primary);
}

.article-content img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color);
  margin: 40px auto;
}

.article-content figure {
  margin: 40px 0;
}

.article-content figure img {
  margin: 0;
}

.article-content figcaption {
  font-size: 13px;
  color: var(--text-weak);
  text-align: center;
  margin-top: 12px;
  line-height: 1.6;
}

.article-content code {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  color: var(--brand-hover);
}

.article-content pre {
  background: var(--bg-dark);
  color: #F5F3EE;
  padding: 24px 28px;
  border-radius: var(--radius-card);
  overflow-x: auto;
  margin: 36px 0;
  font-size: 14px;
  line-height: 1.7;
}

.article-content pre code {
  background: none;
  border: none;
  color: inherit;
  padding: 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 36px 0;
  font-size: 15px;
}

.article-content th {
  background: var(--bg-card-alt);
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  padding: 12px 16px;
  border-bottom: 2px solid var(--border-color);
}

.article-content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 48px 0;
}

/* ===== Entry CTA ===== */
.article-entry-cta {
  padding: 56px 0;
  background: var(--bg-page);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.entry-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 40px 48px;
  box-shadow: var(--shadow-default);
}

.entry-cta-text h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.entry-cta-text p {
  font-size: 15px;
  color: var(--text-weak);
  margin: 0;
  line-height: 1.6;
}

.entry-cta-buttons {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

/* ===== Related Posts ===== */
.related-posts {
  padding: 88px 0 100px;
  background: var(--bg-card-alt);
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 44px;
}

.section-heading h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  position: relative;
  padding-left: 18px;
  letter-spacing: -0.01em;
}

.section-heading h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  border-radius: 2px;
  background: var(--brand-primary);
}

.section-heading p {
  font-size: 14px;
  color: var(--text-weak);
  margin: 0;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  overflow: hidden;
  text-decoration: none;
  transition: border-color .3s ease, box-shadow .3s ease, transform .3s ease;
}

.related-card:hover {
  border-color: var(--brand-primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.related-card:active {
  transform: translateY(-2px);
}

.related-card-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-card-alt);
}

.related-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.related-card:hover .related-card-thumb img {
  transform: scale(1.03);
}

.related-card-body {
  padding: 22px 24px 20px;
}

.related-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.45;
  margin: 0 0 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.6;
  margin: 0 0 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--brand-primary);
  transition: gap .2s ease;
}

.related-card:hover .related-card-link {
  gap: 10px;
}

.related-card-link i {
  font-size: 12px;
}

/* ===== Not Found ===== */
.article-not-found-wrap {
  padding: 0;
  background: var(--bg-page);
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.article-not-found {
  text-align: center;
  max-width: 480px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 56px 48px;
  box-shadow: var(--shadow-default);
}

.article-not-found i.fa-search {
  font-size: 36px;
  color: var(--brand-primary);
  margin-bottom: 20px;
  display: block;
}

.article-not-found p {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 24px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  color: #F5F3EE;
  padding: 72px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(245,243,238,.1);
}

.footer-brand-area {
  max-width: 420px;
}

.footer-brand {
  font-size: 24px;
  font-weight: 700;
  color: #F5F3EE;
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: color .2s ease;
}

.footer-brand:hover {
  color: var(--brand-highlight);
}

.footer-brand-tag {
  font-size: 14px;
  color: #8B857E;
  line-height: 1.75;
  margin: 16px 0 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #F5F3EE;
  margin: 0 0 18px;
  letter-spacing: .02em;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: #C9C4BB;
  text-decoration: none;
  padding: 4px 0;
  transition: color .2s ease;
}

.footer-col a:hover {
  color: var(--brand-highlight);
}

.footer-col a:focus-visible {
  outline: 2px solid rgba(198,161,91,.4);
  outline-offset: 2px;
  border-radius: 2px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 32px;
  font-size: 13px;
  color: #6F6A63;
}

.footer-bottom span:last-child {
  color: #5C5750;
}

/* ===== Animation ===== */
.js .article-body-wrap,
.js .article-entry-cta,
.js .related-posts {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .32s cubic-bezier(.2,0,0,1), transform .32s cubic-bezier(.2,0,0,1);
}

.js .article-body-wrap.visible,
.js .article-entry-cta.visible,
.js .related-posts.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 991px) {
  .navbar-main {
    height: 68px;
  }

  .nav-links {
    display: none;
  }

  .nav-cta {
    display: none;
  }

  .navbar-toggler {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
  }

  .mobile-menu {
    display: flex;
  }

  .mobile-overlay {
    display: block;
  }

  .article-hero {
    padding: 44px 0 40px;
  }

  .article-hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .article-hero-cover {
    display: none;
  }

  .article-hero h1 {
    font-size: 30px;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .entry-cta-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 32px;
  }

  .entry-cta-buttons {
    width: 100%;
  }

  .entry-cta-buttons .btn-cta,
  .entry-cta-buttons .btn-outline {
    flex: 1;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}

@media (max-width: 767px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .brand-main {
    font-size: 22px;
  }

  .brand-sub {
    font-size: 13px;
  }

  .article-hero h1 {
    font-size: 26px;
  }

  .article-meta {
    gap: 12px;
    font-size: 13px;
  }

  .article-body-wrap {
    padding: 48px 0 64px;
  }

  .article-content {
    font-size: 15px;
  }

  .article-content h2 {
    font-size: 22px;
    margin-top: 44px;
  }

  .article-content h3 {
    font-size: 18px;
  }

  .section-heading {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 32px;
  }

  .section-heading h2 {
    font-size: 22px;
  }

  .related-posts {
    padding: 64px 0 72px;
  }

  .entry-cta-inner {
    padding: 28px 24px;
  }

  .entry-cta-buttons {
    flex-direction: column;
  }

  .entry-cta-buttons .btn-cta,
  .entry-cta-buttons .btn-outline {
    width: 100%;
  }

  .footer-bottom {
    font-size: 12px;
  }
}

@media (max-width: 575px) {
  .article-hero h1 {
    font-size: 24px;
  }

  .breadcrumb {
    font-size: 12px;
    gap: 6px;
  }

  .breadcrumb-current {
    max-width: 200px;
  }

  .article-content blockquote {
    padding: 16px 20px;
    font-size: 14px;
  }

  .related-card-body {
    padding: 18px 20px 16px;
  }

  .article-not-found {
    padding: 40px 24px;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* roulang page: category1 */
:root {
            --bg-page: #F5F3EE;
            --bg-card: #FFFFFF;
            --bg-card-alt: #FAF8F4;
            --text-main: #171713;
            --text-secondary: #3E3B36;
            --text-weak: #8B857E;
            --border: #E1DCD3;
            --brand: #A77B47;
            --brand-hover: #8F6741;
            --brand-light: #C6A15B;
            --select-bg: #D9C9A5;
            --accent-green: #3B4A3F;
            --footer-bg: #171713;
            --radius-btn: 4px;
            --radius-card: 6px;
            --radius-tag: 999px;
            --shadow-sm: 0 1px 2px rgba(23, 23, 19, .04), 0 8px 24px rgba(23, 23, 19, .06);
            --shadow-hover: 0 2px 4px rgba(23, 23, 19, .06), 0 16px 40px rgba(23, 23, 19, .10);
            --ease: cubic-bezier(.2, 0, 0, 1);
            --container-max: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--bg-page);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--brand);
            text-decoration: none;
            transition: color .24s var(--ease), border-color .24s var(--ease), background-color .24s var(--ease);
        }
        a:hover {
            color: var(--brand-hover);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }
        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(247, 246, 242, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: background .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
        }
        .site-header.scrolled {
            background: rgba(247, 246, 242, .95);
            border-bottom-color: var(--border);
            box-shadow: 0 1px 0 rgba(23, 23, 19, .03);
        }
        .navbar-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 24px;
        }
        .brand {
            display: flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
            line-height: 1.2;
        }
        .brand-main {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 1px;
        }
        .brand-sub {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            letter-spacing: .4px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            position: relative;
            display: inline-block;
            padding: 10px 0 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            line-height: 1.4;
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--brand);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform .3s var(--ease);
        }
        .nav-links a:hover {
            color: var(--text-main);
        }
        .nav-links a.active {
            color: var(--text-main);
            font-weight: 600;
        }
        .nav-links a.active::after {
            transform: scaleX(1);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            background: var(--brand);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: 1px solid var(--brand);
            transition: all .24s var(--ease);
            white-space: nowrap;
        }
        .btn-cta:hover {
            background: var(--brand-hover);
            border-color: var(--brand-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(139, 103, 71, .22);
        }
        .btn-cta:focus-visible {
            outline: 2px solid var(--brand-light);
            outline-offset: 2px;
        }
        .navbar-toggler {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--text-main);
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: var(--bg-card);
            transition: border-color .2s, background .2s;
        }
        .navbar-toggler:hover {
            border-color: var(--brand);
            background: var(--bg-card-alt);
        }

        /* 分类页顶部 */
        .cat-hero {
            position: relative;
            padding: 72px 0 64px;
            background-color: var(--bg-page);
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .cat-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .18;
            z-index: 0;
        }
        .cat-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(245, 243, 238, .94) 0%, rgba(245, 243, 238, .7) 55%, rgba(245, 243, 238, .92) 100%);
            z-index: 1;
        }
        .cat-hero .container {
            position: relative;
            z-index: 2;
        }
        .cat-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 28px;
        }
        .cat-breadcrumb a {
            color: var(--text-weak);
            border-bottom: 1px solid transparent;
            transition: color .2s, border-color .2s;
        }
        .cat-breadcrumb a:hover {
            color: var(--brand);
            border-bottom-color: var(--brand);
        }
        .cat-breadcrumb .sep {
            color: var(--border);
            font-size: 14px;
            line-height: 1;
        }
        .cat-hero h1 {
            font-size: 38px;
            font-weight: 800;
            letter-spacing: 1px;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .cat-hero-desc {
            max-width: 720px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .cat-hero-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-weak);
        }
        .cat-hero-meta i {
            color: var(--brand);
            margin-right: 6px;
        }

        /* 板块通用 */
        .section-block {
            padding: 96px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .section-label::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--brand);
            border-radius: 2px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: .5px;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 660px;
        }

        /* 核心优势 */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: box-shadow .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
            position: relative;
        }
        .feature-item:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .feature-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            background: var(--select-bg);
            color: var(--brand-hover);
            font-size: 18px;
            margin-bottom: 18px;
        }
        .feature-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .feature-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* 场景图文 */
        .scene-row {
            display: flex;
            align-items: center;
            gap: 56px;
            margin-bottom: 72px;
        }
        .scene-row:last-child {
            margin-bottom: 0;
        }
        .scene-row.reverse {
            flex-direction: row-reverse;
        }
        .scene-media {
            flex: 0 0 48%;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            background: var(--bg-card-alt);
            position: relative;
        }
        .scene-media::after {
            content: "";
            position: absolute;
            inset: 0;
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-card);
            pointer-events: none;
        }
        .scene-media img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
        }
        .scene-body {
            flex: 1;
        }
        .scene-body h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: 14px;
        }
        .scene-body p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .scene-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--brand);
            border-bottom: 1px solid var(--brand);
            padding-bottom: 2px;
            transition: all .24s var(--ease);
        }
        .scene-link:hover {
            color: var(--brand-hover);
            border-bottom-color: transparent;
            gap: 12px;
        }

        /* 访问流程 */
        .process-section {
            background: var(--footer-bg);
            color: #F5F3EE;
            padding: 96px 0;
        }
        .process-section .section-title {
            color: #F5F3EE;
        }
        .process-section .section-label::before {
            background: var(--brand-light);
        }
        .process-section .section-label {
            color: var(--brand-light);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 48px;
        }
        .process-step {
            position: relative;
            padding: 32px 24px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-card);
            transition: background .3s var(--ease), border-color .3s var(--ease);
        }
        .process-step:hover {
            background: rgba(255, 255, 255, .07);
            border-color: rgba(198, 161, 91, .4);
        }
        .process-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--brand);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: #F5F3EE;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(245, 243, 238, .72);
            margin: 0;
        }

        /* 内容列表 */
        .content-area {
            padding: 96px 0;
            background: var(--bg-page);
        }
        .content-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 48px;
        }
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-card {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: border-color .3s var(--ease), box-shadow .3s var(--ease), transform .3s var(--ease);
        }
        .content-card:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .content-card .content-index {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-page);
            border: 1px solid var(--border);
            color: var(--brand);
            font-size: 14px;
            font-weight: 700;
        }
        .content-card .content-main {
            flex: 1;
            min-width: 0;
        }
        .content-card .content-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--brand-hover);
            background: var(--select-bg);
            border-radius: var(--radius-tag);
            padding: 2px 12px;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .content-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.45;
            margin-bottom: 6px;
        }
        .content-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .content-card .content-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--text-weak);
        }
        .content-card .content-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
            transition: gap .24s var(--ease);
        }
        .content-card .content-link:hover {
            gap: 10px;
            color: var(--brand-hover);
        }
        .content-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 32px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border);
            padding-bottom: 2px;
            transition: color .2s, border-color .2s, gap .2s;
        }
        .content-back:hover {
            color: var(--brand);
            border-color: var(--brand);
            gap: 12px;
        }

        /* 侧栏 */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
        }
        .sidebar-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
            line-height: 1.4;
        }
        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-list li {
            border-bottom: 1px solid var(--border);
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-list a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 13px 0;
            font-size: 14px;
            color: var(--text-secondary);
            transition: color .2s, padding-left .2s;
        }
        .sidebar-list a:hover {
            color: var(--brand);
            padding-left: 6px;
        }
        .sidebar-list a i {
            font-size: 12px;
            color: var(--text-weak);
        }
        .sidebar-note {
            background: var(--accent-green);
            border: none;
        }
        .sidebar-note h3 {
            color: #F5F3EE;
            border-bottom-color: rgba(255, 255, 255, .2);
        }
        .sidebar-note p {
            font-size: 14px;
            color: rgba(245, 243, 238, .8);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .sidebar-note a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #F5F3EE;
            font-size: 14px;
            font-weight: 600;
            border-bottom: 1px solid rgba(255, 255, 255, .5);
            padding-bottom: 2px;
            transition: gap .24s var(--ease), border-color .2s;
        }
        .sidebar-note a:hover {
            gap: 10px;
            border-color: #F5F3EE;
            color: #F5F3EE;
        }

        /* FAQ */
        .faq-section {
            padding: 96px 0;
            background: var(--bg-card-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .faq-wrapper {
            max-width: 860px;
            margin: 40px auto 0;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
        }
        .faq-item:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-sm);
        }
        .faq-item.active {
            border-color: var(--brand);
            background: var(--bg-card-alt);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 20px 24px;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            transition: color .2s;
        }
        .faq-question:hover {
            color: var(--brand);
        }
        .faq-icon {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border);
            color: var(--brand);
            font-size: 13px;
            transition: transform .3s var(--ease), background .3s, border-color .3s;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            background: var(--brand);
            border-color: var(--brand);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s var(--ease);
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-top: 1px dashed var(--border);
            padding-top: 16px;
        }

        /* CTA */
        .cta-strip {
            padding: 72px 0;
            background: var(--footer-bg);
            position: relative;
            overflow: hidden;
        }
        .cta-strip::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: .1;
        }
        .cta-strip .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-strip h2 {
            font-size: 28px;
            font-weight: 700;
            color: #F5F3EE;
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .cta-strip p {
            font-size: 16px;
            color: rgba(245, 243, 238, .75);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .btn-cta-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 48px;
            padding: 0 32px;
            background: var(--brand);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: 1px solid var(--brand);
            transition: all .24s var(--ease);
        }
        .btn-cta-light:hover {
            background: var(--brand-hover);
            border-color: var(--brand-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(167, 123, 71, .3);
        }

        /* 页脚 */
        .site-footer {
            background: var(--footer-bg);
            color: #F5F3EE;
            padding: 72px 0 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 64px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(245, 243, 238, .12);
        }
        .footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: #F5F3EE;
            letter-spacing: 1px;
            line-height: 1.3;
            display: inline-block;
            margin-bottom: 14px;
            transition: color .2s;
        }
        .footer-brand:hover {
            color: var(--brand-light);
        }
        .footer-brand-tag {
            font-size: 15px;
            line-height: 1.8;
            color: rgba(245, 243, 238, .65);
            max-width: 420px;
            margin: 0;
        }
        .footer-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #F5F3EE;
            letter-spacing: 1px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: #C9C4BB;
            line-height: 2.2;
            transition: color .2s, padding-left .2s;
        }
        .footer-col a:hover {
            color: var(--brand-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(245, 243, 238, .55);
        }
        .footer-bottom .compliance {
            color: rgba(245, 243, 238, .35);
            font-size: 12px;
        }

        /* 动效 */
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity .32s var(--ease), transform .32s var(--ease);
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 响应式 */
        @media (max-width: 992px) {
            .navbar-main {
                min-height: 64px;
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: 0;
                width: 280px;
                height: 100vh;
                background: var(--bg-page);
                flex-direction: column;
                align-items: flex-start;
                justify-content: flex-start;
                padding: 80px 32px 32px;
                gap: 0;
                box-shadow: -8px 0 32px rgba(23, 23, 19, .12);
                transform: translateX(100%);
                transition: transform .3s var(--ease);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links a {
                display: block;
                padding: 12px 0;
                font-size: 16px;
                border-bottom: 1px solid var(--border);
            }
            .nav-links a::after {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .navbar-toggler {
                display: inline-flex;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scene-row,
            .scene-row.reverse {
                flex-direction: column;
                gap: 32px;
            }
            .scene-media {
                flex: none;
                width: 100%;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .content-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .section-block,
            .process-section,
            .content-area,
            .faq-section {
                padding: 64px 0;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .brand-main {
                font-size: 22px;
            }
            .brand-sub {
                font-size: 12px;
            }
            .cat-hero {
                padding: 48px 0 40px;
            }
            .cat-hero h1 {
                font-size: 28px;
            }
            .cat-hero-desc {
                font-size: 15px;
            }
            .section-title {
                font-size: 24px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .content-card {
                padding: 20px;
                flex-direction: column;
                gap: 14px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 14px;
            }
            .faq-answer-inner {
                padding: 0 18px 16px;
                font-size: 13px;
            }
            .cta-strip h2 {
                font-size: 22px;
            }
            .footer-top {
                gap: 32px;
            }
            .footer-links {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 576px) {
            .section-block,
            .process-section,
            .content-area,
            .faq-section {
                padding: 48px 0;
            }
            .cat-hero-meta {
                flex-wrap: wrap;
                gap: 10px;
            }
            .scene-body h3 {
                font-size: 20px;
            }
            .brand-sub {
                display: none;
            }
        }

/* roulang page: category2 */
:root {
        --page-bg: #F5F3EE;
        --card-bg: #FFFFFF;
        --card-warm: #FAF8F4;
        --text-primary: #171713;
        --text-secondary: #3E3B36;
        --text-weak: #8B857E;
        --border-color: #E1DCD3;
        --brand-color: #A77B47;
        --brand-hover: #8F6741;
        --brand-glow: #C6A15B;
        --brand-selection: #D9C9A5;
        --accent-green: #3B4A3F;
        --radius-sm: 4px;
        --radius-md: 6px;
        --radius-lg: 999px;
        --shadow-default: 0 1px 2px rgba(23, 23, 19, .04), 0 8px 24px rgba(23, 23, 19, .06);
        --shadow-hover: 0 2px 4px rgba(23, 23, 19, .06), 0 16px 40px rgba(23, 23, 19, .10);
        --transition: 240ms cubic-bezier(.2, 0, 0, 1);
    }

    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        background-color: var(--page-bg);
        color: var(--text-primary);
        font-size: 15px;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
    }

    a {
        color: inherit;
        text-decoration: none;
        transition: color .2s ease;
    }

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

    .container {
        max-width: 1200px;
        padding-left: 24px;
        padding-right: 24px;
    }

    /* ===== Header ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(247, 246, 242, .92);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-color);
        transition: box-shadow .3s ease;
    }

    .site-header.scrolled {
        box-shadow: 0 1px 8px rgba(23, 23, 19, .05);
    }

    .navbar-main {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 72px;
        gap: 24px;
    }

    .brand {
        display: flex;
        align-items: baseline;
        gap: 6px;
        flex-shrink: 0;
    }

    .brand-main {
        font-size: 26px;
        font-weight: 800;
        color: var(--text-primary);
        letter-spacing: 1px;
        line-height: 1.2;
    }

    .brand-sub {
        font-size: 14px;
        font-weight: 500;
        color: var(--text-secondary);
        letter-spacing: .5px;
        white-space: nowrap;
    }

    .nav-links {
        display: flex;
        list-style: none;
        margin: 0;
        padding: 0;
        gap: 32px;
    }

    .nav-links li a {
        display: inline-block;
        padding: 8px 2px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-secondary);
        position: relative;
        border-bottom: 2px solid transparent;
        transition: color .2s, border-color .2s;
    }

    .nav-links li a:hover {
        color: var(--text-primary);
    }

    .nav-links li a.active {
        color: var(--text-primary);
        border-bottom-color: var(--brand-color);
        font-weight: 600;
    }

    .nav-links li a:focus-visible {
        outline: 2px solid var(--brand-glow);
        outline-offset: 4px;
        border-radius: 2px;
    }

    .nav-cta .btn-cta {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        height: 44px;
        padding: 0 24px;
        background: var(--brand-color);
        color: #fff;
        font-size: 15px;
        font-weight: 600;
        border-radius: var(--radius-sm);
        border: none;
        cursor: pointer;
        transition: background .24s, transform .24s, box-shadow .24s;
        box-shadow: 0 1px 2px rgba(167, 123, 71, .2);
    }

    .nav-cta .btn-cta:hover {
        background: var(--brand-hover);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(167, 123, 71, .25);
    }

    .nav-cta .btn-cta:active {
        transform: translateY(0);
        box-shadow: 0 1px 2px rgba(167, 123, 71, .15);
    }

    .nav-cta .btn-cta:focus-visible {
        outline: 2px solid var(--brand-glow);
        outline-offset: 2px;
    }

    .navbar-toggler {
        display: none;
        background: none;
        border: none;
        font-size: 24px;
        color: var(--text-primary);
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-sm);
        cursor: pointer;
    }

    .navbar-toggler:hover {
        background: var(--card-warm);
    }

    .navbar-toggler:focus-visible {
        outline: 2px solid var(--brand-glow);
        outline-offset: 2px;
    }

    /* Mobile drawer */
    .mobile-drawer {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 320px;
        max-width: 85vw;
        background: var(--page-bg);
        z-index: 1050;
        padding: 24px;
        flex-direction: column;
        box-shadow: -8px 0 40px rgba(23, 23, 19, .12);
        transform: translateX(100%);
        transition: transform .32s cubic-bezier(.2, 0, 0, 1);
    }

    .mobile-drawer.open {
        transform: translateX(0);
        display: flex;
    }

    .drawer-backdrop {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(23, 23, 19, .4);
        z-index: 1040;
    }

    .drawer-backdrop.show {
        display: block;
    }

    .drawer-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 24px;
        padding-bottom: 16px;
        border-bottom: 1px solid var(--border-color);
    }

    .drawer-header .brand-main {
        font-size: 22px;
    }

    .drawer-close {
        background: none;
        border: none;
        font-size: 22px;
        color: var(--text-secondary);
        width: 40px;
        height: 40px;
        border-radius: var(--radius-sm);
        cursor: pointer;
    }

    .drawer-close:hover {
        background: var(--card-warm);
        color: var(--text-primary);
    }

    .drawer-nav {
        list-style: none;
        padding: 0;
        margin: 0;
        flex: 1;
    }

    .drawer-nav li a {
        display: block;
        font-size: 16px;
        line-height: 48px;
        color: var(--text-secondary);
        border-bottom: 1px solid rgba(225, 220, 211, .6);
        transition: color .2s, padding-left .2s;
    }

    .drawer-nav li a:hover {
        color: var(--brand-color);
        padding-left: 6px;
    }

    .drawer-nav li a.active {
        color: var(--text-primary);
        font-weight: 600;
        border-left: 3px solid var(--brand-color);
        padding-left: 12px;
    }

    .drawer-cta {
        margin-top: auto;
        padding-top: 20px;
    }

    /* ===== Page Hero (compact) ===== */
    .category-hero {
        padding: 72px 0 48px;
        background: linear-gradient(180deg, rgba(245, 243, 238, 0) 0%, var(--page-bg) 100%), url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat;
        position: relative;
    }

    .category-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(90deg, rgba(245, 243, 238, .94) 0%, rgba(245, 243, 238, .72) 55%, rgba(245, 243, 238, .4) 100%);
        pointer-events: none;
    }

    .category-hero .container {
        position: relative;
        z-index: 1;
    }

    .breadcrumb-nav {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-weak);
        margin-bottom: 24px;
    }

    .breadcrumb-nav a {
        color: var(--text-secondary);
        transition: color .2s;
    }

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

    .breadcrumb-nav span {
        color: var(--text-weak);
    }

    .category-hero h1 {
        font-size: 38px;
        font-weight: 700;
        line-height: 1.25;
        margin-bottom: 16px;
        letter-spacing: .5px;
        color: var(--text-primary);
    }

    .category-hero .lead {
        font-size: 16px;
        color: var(--text-secondary);
        max-width: 640px;
        line-height: 1.8;
        margin-bottom: 0;
    }

    /* ===== Section head ===== */
    .section-head {
        margin-bottom: 40px;
    }

    .section-head h2 {
        font-size: 28px;
        font-weight: 700;
        line-height: 1.3;
        margin-bottom: 8px;
        letter-spacing: .5px;
    }

    .section-head p {
        font-size: 15px;
        color: var(--text-weak);
        max-width: 560px;
        line-height: 1.7;
    }

    .section-kicker {
        display: inline-block;
        font-size: 12px;
        font-weight: 600;
        letter-spacing: 2px;
        text-transform: uppercase;
        color: var(--brand-color);
        margin-bottom: 8px;
        background: rgba(167, 123, 71, .08);
        padding: 4px 12px;
        border-radius: var(--radius-lg);
    }

    /* ===== Feature panels ===== */
    .feature-section {
        padding: 88px 0;
        background: var(--page-bg);
    }

    .feature-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .feature-card {
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 32px 28px;
        transition: border-color .3s, box-shadow .3s, transform .3s;
        position: relative;
        overflow: hidden;
    }

    .feature-card::after {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 3px;
        height: 0;
        background: var(--brand-color);
        transition: height .3s cubic-bezier(.2, 0, 0, 1);
    }

    .feature-card:hover {
        border-color: var(--brand-color);
        box-shadow: var(--shadow-hover);
        transform: translateY(-2px);
    }

    .feature-card:hover::after {
        height: 100%;
    }

    .feature-card:focus-within {
        outline: none;
        border-color: var(--brand-color);
        box-shadow: 0 0 0 2px rgba(167, 123, 71, .18), var(--shadow-hover);
    }

    .feature-icon {
        width: 48px;
        height: 48px;
        border-radius: var(--radius-sm);
        background: linear-gradient(135deg, rgba(167, 123, 71, .1) 0%, rgba(167, 123, 71, .04) 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 20px;
        color: var(--brand-color);
        font-size: 20px;
        border: 1px solid rgba(167, 123, 71, .16);
    }

    .feature-card h3 {
        font-size: 18px;
        font-weight: 600;
        margin-bottom: 10px;
        line-height: 1.4;
    }

    .feature-card p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin-bottom: 0;
    }

    /* ===== Scenario section ===== */
    .scenario-section {
        padding: 88px 0;
        background: var(--card-warm);
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
    }

    .scenario-item {
        display: flex;
        align-items: center;
        gap: 48px;
        margin-bottom: 64px;
    }

    .scenario-item:last-child {
        margin-bottom: 0;
    }

    .scenario-img {
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-default);
        flex: 0 0 48%;
        aspect-ratio: 16/10;
        background: #eee;
    }

    .scenario-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s cubic-bezier(.2, 0, 0, 1);
    }

    .scenario-item:hover .scenario-img img {
        transform: scale(1.02);
    }

    .scenario-text {
        flex: 1;
    }

    .scenario-text .tag {
        display: inline-block;
        font-size: 12px;
        font-weight: 600;
        color: var(--accent-green);
        background: rgba(59, 74, 63, .08);
        padding: 4px 12px;
        border-radius: var(--radius-lg);
        margin-bottom: 14px;
        letter-spacing: .5px;
    }

    .scenario-text h3 {
        font-size: 24px;
        font-weight: 700;
        line-height: 1.3;
        margin-bottom: 14px;
    }

    .scenario-text p {
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.8;
        margin-bottom: 18px;
    }

    .scenario-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 15px;
        font-weight: 600;
        color: var(--brand-color);
        border-bottom: 1px solid var(--brand-color);
        padding-bottom: 2px;
        transition: gap .2s, border-color .2s, color .2s;
    }

    .scenario-link:hover {
        gap: 10px;
        border-bottom-color: transparent;
        color: var(--brand-hover);
    }

    .scenario-link:focus-visible {
        outline: 2px solid var(--brand-glow);
        outline-offset: 4px;
        border-radius: 2px;
    }

    /* ===== Process section ===== */
    .process-section {
        padding: 88px 0;
        background: var(--page-bg);
    }

    .process-steps {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        margin-top: 40px;
    }

    .process-step {
        position: relative;
        padding: 32px 24px;
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        text-align: center;
        transition: border-color .3s, box-shadow .3s;
    }

    .process-step:hover {
        border-color: var(--brand-color);
        box-shadow: var(--shadow-hover);
    }

    .process-step .step-num {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--brand-color);
        color: #fff;
        font-size: 16px;
        font-weight: 700;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 16px;
        font-variant-numeric: tabular-nums;
    }

    .process-step h4 {
        font-size: 17px;
        font-weight: 600;
        margin-bottom: 8px;
    }

    .process-step p {
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.6;
        margin-bottom: 0;
    }

    .process-step + .process-step::before {
        content: "\f054";
        font-family: "Font Awesome 6 Free";
        font-weight: 900;
        position: absolute;
        left: -18px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--brand-color);
        font-size: 12px;
        opacity: .5;
        z-index: 1;
    }

    /* ===== Content list section ===== */
    .content-list-section {
        padding: 88px 0;
        background: var(--card-warm);
        border-top: 1px solid var(--border-color);
    }

    .content-cards {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .content-card {
        display: flex;
        align-items: center;
        gap: 20px;
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 22px 26px;
        transition: border-color .3s, box-shadow .3s, transform .3s;
        min-height: 72px;
    }

    .content-card:hover {
        border-color: var(--brand-color);
        box-shadow: var(--shadow-hover);
        transform: translateX(4px);
    }

    .content-card:focus-visible {
        outline: 2px solid var(--brand-glow);
        outline-offset: 2px;
    }

    .content-card .card-icon {
        flex-shrink: 0;
        width: 40px;
        height: 40px;
        border-radius: var(--radius-sm);
        background: rgba(167, 123, 71, .08);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--brand-color);
        font-size: 16px;
    }

    .content-card .card-body {
        flex: 1;
        min-width: 0;
    }

    .content-card .card-body h4 {
        font-size: 16px;
        font-weight: 600;
        line-height: 1.4;
        margin-bottom: 4px;
        color: var(--text-primary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .content-card .card-body p {
        font-size: 13px;
        color: var(--text-weak);
        line-height: 1.5;
        margin-bottom: 0;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .content-card .card-arrow {
        flex-shrink: 0;
        color: var(--text-weak);
        font-size: 14px;
        transition: transform .3s, color .3s;
    }

    .content-card:hover .card-arrow {
        transform: translateX(4px);
        color: var(--brand-color);
    }

    /* Sidebar */
    .sidebar {
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 28px;
        position: sticky;
        top: 96px;
    }

    .sidebar h4 {
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 18px;
        padding-bottom: 12px;
        border-bottom: 2px solid var(--border-color);
        position: relative;
    }

    .sidebar h4::after {
        content: "";
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 40px;
        height: 2px;
        background: var(--brand-color);
    }

    .sidebar .related-link {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 12px 0;
        border-bottom: 1px solid rgba(225, 220, 211, .5);
        color: var(--text-secondary);
        font-size: 15px;
        font-weight: 500;
        transition: color .2s, padding-left .2s;
    }

    .sidebar .related-link:hover {
        color: var(--brand-color);
        padding-left: 6px;
    }

    .sidebar .related-link i {
        font-size: 12px;
        color: var(--brand-color);
    }

    .sidebar .tip-box {
        margin-top: 24px;
        padding: 20px;
        background: var(--card-warm);
        border-radius: var(--radius-sm);
        border-left: 3px solid var(--brand-color);
    }

    .sidebar .tip-box p {
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin-bottom: 0;
    }

    /* ===== FAQ section ===== */
    .faq-section {
        padding: 88px 0;
        background: var(--page-bg);
    }

    .faq-list {
        max-width: 820px;
        margin: 0 auto;
    }

    .faq-item {
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        margin-bottom: 16px;
        overflow: hidden;
        transition: border-color .3s, box-shadow .3s;
    }

    .faq-item:hover {
        border-color: var(--brand-color);
    }

    .faq-item[open] {
        border-color: var(--brand-color);
        box-shadow: var(--shadow-default);
    }

    .faq-item summary {
        cursor: pointer;
        padding: 20px 24px;
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        line-height: 1.5;
        list-style: none;
        display: flex;
        align-items: center;
        gap: 14px;
        transition: background .2s;
        position: relative;
        padding-right: 50px;
    }

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

    .faq-item summary::before {
        content: "";
        flex-shrink: 0;
        width: 4px;
        height: 20px;
        background: var(--brand-color);
        border-radius: var(--radius-lg);
        opacity: .6;
        transition: background .2s;
    }

    .faq-item[open] summary::before {
        background: var(--brand-color);
        opacity: 1;
    }

    .faq-item summary::after {
        content: "\f054";
        font-family: "Font Awesome 6 Free";
        font-weight: 900;
        position: absolute;
        right: 22px;
        top: 50%;
        transform: translateY(-50%);
        font-size: 13px;
        color: var(--text-weak);
        transition: transform .3s, color .3s;
    }

    .faq-item[open] summary::after {
        transform: translateY(-50%) rotate(90deg);
        color: var(--brand-color);
    }

    .faq-item summary:hover {
        background: var(--card-warm);
    }

    .faq-item summary:focus-visible {
        outline: 2px solid var(--brand-glow);
        outline-offset: -2px;
        border-radius: var(--radius-md);
    }

    .faq-answer {
        padding: 0 24px 20px;
        padding-left: 42px;
        font-size: 14px;
        line-height: 1.75;
        color: var(--text-secondary);
    }

    .faq-answer p {
        margin-bottom: 0;
    }

    /* ===== CTA banner ===== */
    .cta-banner {
        padding: 72px 0;
        background: linear-gradient(rgba(23, 23, 19, .76), rgba(23, 23, 19, .76)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
        text-align: center;
        position: relative;
    }

    .cta-banner .container {
        position: relative;
        z-index: 1;
    }

    .cta-banner h2 {
        font-size: 30px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 14px;
        letter-spacing: .5px;
    }

    .cta-banner p {
        font-size: 16px;
        color: rgba(255, 255, 255, .85);
        max-width: 520px;
        margin: 0 auto 28px;
        line-height: 1.7;
    }

    .cta-banner .btn-cta-light {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        height: 48px;
        padding: 0 32px;
        background: var(--brand-color);
        color: #fff;
        font-size: 16px;
        font-weight: 600;
        border-radius: var(--radius-sm);
        border: none;
        cursor: pointer;
        transition: background .24s, transform .24s, box-shadow .24s;
        box-shadow: 0 4px 16px rgba(167, 123, 71, .3);
    }

    .cta-banner .btn-cta-light:hover {
        background: var(--brand-hover);
        transform: translateY(-2px);
        box-shadow: 0 6px 24px rgba(167, 123, 71, .35);
    }

    .cta-banner .btn-cta-light:focus-visible {
        outline: 2px solid var(--brand-glow);
        outline-offset: 3px;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #171713;
        color: var(--page-bg);
        padding: 64px 0 0;
    }

    .footer-top {
        display: flex;
        justify-content: space-between;
        gap: 48px;
        padding-bottom: 48px;
        border-bottom: 1px solid rgba(245, 243, 238, .1);
    }

    .footer-brand-area {
        flex: 0 0 55%;
    }

    .footer-brand {
        font-size: 26px;
        font-weight: 800;
        color: #fff;
        letter-spacing: 1px;
        display: inline-block;
        margin-bottom: 12px;
        transition: color .2s;
    }

    .footer-brand:hover {
        color: var(--brand-glow);
    }

    .footer-brand-tag {
        font-size: 14px;
        color: #8B857E;
        line-height: 1.7;
        max-width: 380px;
        margin-bottom: 0;
    }

    .footer-links {
        display: flex;
        gap: 48px;
    }

    .footer-col h4 {
        font-size: 14px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 14px;
        letter-spacing: .5px;
    }

    .footer-col a {
        display: block;
        font-size: 14px;
        color: #C9C4BB;
        line-height: 2.2;
        transition: color .2s;
    }

    .footer-col a:hover {
        color: var(--brand-glow);
    }

    .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 24px 0;
        font-size: 13px;
        color: #8B857E;
        flex-wrap: wrap;
        gap: 8px;
    }

    /* ===== Responsive ===== */
    @media (max-width: 991.98px) {
        .nav-links {
            display: none;
        }

        .nav-cta {
            display: none;
        }

        .navbar-toggler {
            display: flex;
        }

        .feature-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .process-steps {
            grid-template-columns: repeat(2, 1fr);
        }

        .process-step + .process-step::before {
            display: none;
        }

        .scenario-item {
            flex-direction: column;
            gap: 24px;
        }

        .scenario-img {
            flex: 0 0 auto;
            width: 100%;
        }

        .footer-top {
            flex-direction: column;
            gap: 32px;
        }

        .footer-brand-area {
            flex: 0 0 auto;
        }
    }

    @media (max-width: 767.98px) {
        .container {
            padding-left: 20px;
            padding-right: 20px;
        }

        .category-hero {
            padding: 48px 0 32px;
        }

        .category-hero h1 {
            font-size: 30px;
        }

        .feature-section,
        .scenario-section,
        .process-section,
        .content-list-section,
        .faq-section {
            padding: 56px 0;
        }

        .feature-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .process-steps {
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .section-head h2 {
            font-size: 24px;
        }

        .cta-banner h2 {
            font-size: 24px;
        }

        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
    }

    @media (min-width: 576px) and (max-width: 991.98px) {
        .feature-grid {
            gap: 20px;
        }
    }

    @media (max-width: 575.98px) {
        .brand-sub {
            display: none;
        }

        .brand-main {
            font-size: 22px;
        }

        .navbar-main {
            min-height: 64px;
        }

        .content-card {
            padding: 18px 16px;
            gap: 14px;
        }

        .content-card .card-body h4 {
            white-space: normal;
        }

        .sidebar {
            position: static;
            margin-top: 24px;
        }

        .cta-banner {
            padding: 48px 0;
        }

        .cta-banner .btn-cta-light {
            width: 100%;
            justify-content: center;
        }
    }