/* roulang page: index */
:root {
  --color-primary: #1F5E53;
  --color-primary-dark: #16584A;
  --color-primary-rgb: 31, 94, 83;
  --color-accent: #C09A5F;
  --color-accent-light: #D2A95C;
  --color-accent-dark: #B48A4A;
  --color-bg: #FAF7F2;
  --color-surface: #FFFFFF;
  --color-dark: #16322C;
  --color-dark-2: #1F3530;
  --color-text: #2B2B28;
  --color-text-secondary: #6C6B66;
  --color-border: #E8E2D8;
  --radius-card: 18px;
  --radius-hero: 24px;
  --radius-btn: 999px;
  --radius-tag: 8px;
  --shadow-card: 0 4px 16px rgba(31,53,48,0.06);
  --shadow-card-hover: 0 12px 32px rgba(31,53,48,0.12);
  --shadow-float: 0 20px 48px rgba(31,53,48,0.18);
  --space-section: 96px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; }

h1, h2, h3 {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  line-height: 1.35;
  color: var(--color-text);
  font-weight: 700;
}
h1 { font-size: clamp(2.1rem, 4vw, 3.2rem); line-height: 1.3; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); line-height: 1.35; }
h3 { font-size: 1.25rem; line-height: 1.4; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-section) 0; }
.section--white { background: var(--color-surface); }

.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--color-accent-dark);
  margin-bottom: 12px;
}
.section-tag::before {
  content: ""; width: 20px; height: 2px; background: var(--color-accent); border-radius: 2px;
}
.section-head { margin-bottom: 48px; }
.section-head .desc { color: var(--color-text-secondary); margin-top: 10px; max-width: 680px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: var(--radius-btn);
  font-weight: 700; font-size: 0.9375rem; line-height: 1.4;
  border: 1.5px solid transparent; cursor: pointer;
  transition: var(--transition); text-align: center; letter-spacing: 0.01em;
}
.btn:focus-visible { outline: 3px solid rgba(var(--color-primary-rgb), 0.35); outline-offset: 2px; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-card-hover); }
.btn-primary:active { transform: scale(0.97); }
.btn-accent { background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-dark)); color: #16322C; }
.btn-accent:hover { box-shadow: 0 12px 24px rgba(31,53,48,0.18); transform: translateY(-3px); }
.btn-accent:active { transform: scale(0.97); }
.btn-outline { background: transparent; border-color: var(--color-primary); color: var(--color-primary); }
.btn-outline:hover { background: rgba(var(--color-primary-rgb), 0.08); border-color: var(--color-primary-dark); }
.btn-outline:active { transform: scale(0.97); }
.btn-outline-light { background: transparent; border-color: rgba(255,255,255,0.7); color: #FBF7EF; }
.btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.btn-outline-light:active { transform: scale(0.97); }
.btn-lg { padding: 16px 38px; font-size: 1rem; }

.fade-up { opacity: 0; transform: translateY(24px); transition: opacity 0.55s ease, transform 0.55s ease; }
.fade-up.is-visible { opacity: 1; transform: translateY(0); }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(250, 247, 242, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(31,53,48,0.06);
  transition: var(--transition);
}
.site-header.is-scrolled { background: rgba(250, 247, 242, 0.97); box-shadow: 0 4px 20px rgba(31,53,48,0.08); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; position: relative; }
.brand { display: flex; align-items: center; gap: 6px; }
.brand__mark {
  font-family: "Noto Serif SC", Georgia, serif;
  font-size: 1.6rem; font-weight: 700; color: var(--color-primary);
  letter-spacing: -0.02em; line-height: 1;
}
.brand__text {
  font-size: 1rem; font-weight: 700; color: var(--color-text);
  margin-top: 4px; position: relative;
}
.brand__text::after {
  content: ""; position: absolute; bottom: -3px; left: 0; width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--color-accent), transparent); border-radius: 2px;
}
.site-nav { display: flex; align-items: center; gap: 32px; }
.nav-list { display: flex; align-items: center; gap: 28px; }
.nav-link {
  font-size: 0.9375rem; font-weight: 600; color: #4A4A44;
  padding: 8px 2px; position: relative; transition: color 0.25s;
}
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--color-accent-light), var(--color-accent-dark));
  border-radius: 3px; transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.nav-link:hover { color: var(--color-primary); }
.nav-link.is-active { color: var(--color-primary-dark); }
.nav-link.is-active::after { transform: scaleX(1); }
.nav-cta { padding: 10px 24px; font-size: 0.875rem; }

.nav-toggle {
  display: none; width: 40px; height: 40px;
  border: 1px solid var(--color-border); border-radius: 10px;
  background: transparent; cursor: pointer; position: relative; z-index: 1100;
}
.nav-toggle span {
  display: block; width: 18px; height: 2px; background: var(--color-text);
  border-radius: 2px; margin: 4px auto; transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle:hover span { background: var(--color-primary); }
.nav-toggle.is-active span:nth-child(1) { transform: rotate(45deg) translateY(6px); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { transform: rotate(-45deg) translateY(-6px); }

/* Hero */
.hero {
  padding: 180px 0 80px;
  background:
    linear-gradient(135deg, rgba(22,50,44,0.9) 0%, rgba(31,94,83,0.78) 100%),
    url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  color: #FBF7EF; position: relative; overflow: hidden;
}
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero__content { max-width: 640px; }
.hero__title { color: #FBF7EF; margin-bottom: 24px; }
.hero__title .highlight {
  background: linear-gradient(120deg, var(--color-accent-light), var(--color-accent-dark));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__subtitle {
  font-size: 1.125rem; color: rgba(251,247,239,0.85);
  max-width: 540px; line-height: 1.8; margin-bottom: 36px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero__media { position: relative; }
.hero__media::before {
  content: ""; position: absolute; inset: -18px;
  border: 1.5px solid rgba(210,169,92,0.35); border-radius: 28px;
  z-index: 0; pointer-events: none;
}
.hero__media img { border-radius: var(--radius-hero); box-shadow: var(--shadow-float); width: 100%; height: auto; position: relative; z-index: 1; }
.hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  margin-top: 80px; padding: 28px 20px;
  background: rgba(255,255,255,0.12); border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.08);
}
.hero-stat { text-align: center; }
.hero-stat__num { font-size: 1.75rem; font-weight: 700; color: var(--color-accent-light); font-variant-numeric: tabular-nums; }
.hero-stat__label { font-size: 0.8125rem; color: rgba(251,247,239,0.7); margin-top: 4px; }

/* Products */
.product-featured { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 24px; }
.product-side { display: grid; gap: 24px; }
.product-card {
  background: #fff; border-radius: var(--radius-card); box-shadow: var(--shadow-card);
  overflow: hidden; transition: var(--transition); display: flex; flex-direction: column;
}
.product-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); }
.product-card__media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--color-border); }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.product-card:hover .product-card__media img { transform: scale(1.04); }
.product-card__badge {
  position: absolute; top: 12px; right: 12px;
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-dark));
  color: #16322C; font-size: 0.75rem; font-weight: 700;
  padding: 4px 10px; border-radius: var(--radius-tag);
}
.product-card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.product-card__title { font-size: 1.125rem; font-weight: 700; margin-bottom: 10px; }
.product-card__excerpt {
  font-size: 0.9375rem; color: var(--color-text-secondary); line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; margin-bottom: 18px;
}
.product-card__meta { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.product-card__spec {
  font-size: 0.8125rem; font-weight: 600; color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
  padding: 5px 12px; border-radius: var(--radius-btn);
}
.product-card__link {
  font-size: 0.875rem; font-weight: 600; color: var(--color-primary);
  display: inline-flex; align-items: center; gap: 4px; transition: gap 0.25s;
}
.product-card__link:hover { gap: 8px; }
.product-card--featured .product-card__title { font-size: 1.5rem; }
.product-card--side { display: grid; grid-template-columns: 130px 1fr; gap: 12px; align-items: center; }
.product-card--side .product-card__media { aspect-ratio: 1 / 1; border-radius: 14px; flex: 0 0 130px; }
.product-card--side .product-card__body { padding: 16px 20px; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* Brand Story */
.brand-story-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.brand-story__media { position: relative; padding-bottom: 30px; }
.brand-story__media .img-main { border-radius: var(--radius-hero); width: 92%; box-shadow: var(--shadow-card-hover); }
.brand-story__media .img-small {
  position: absolute; right: 0; bottom: 0; width: 46%;
  border-radius: 16px; border: 4px solid var(--color-bg); box-shadow: var(--shadow-float);
}
.brand-story__text p { color: var(--color-text-secondary); margin-bottom: 18px; max-width: 520px; }
.brand-story__points { display: grid; gap: 20px; margin-top: 28px; }
.brand-point { display: flex; gap: 16px; align-items: flex-start; }
.brand-point__icon {
  flex: 0 0 44px; width: 44px; height: 44px; border-radius: 50%;
  background: var(--color-primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
}
.brand-point__title { font-weight: 700; font-size: 0.9375rem; }
.brand-point__desc { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.6; }

/* News */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: #fff; border-radius: var(--radius-card); box-shadow: var(--shadow-card);
  padding: 26px; display: flex; flex-direction: column;
  transition: var(--transition); border: 1px solid rgba(31,53,48,0.04);
}
.news-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); }
.news-card__tag {
  align-self: flex-start; background: rgba(192,154,95,0.14); color: #7A5A2A;
  font-size: 0.75rem; font-weight: 700; padding: 4px 12px;
  border-radius: var(--radius-btn); margin-bottom: 14px;
}
.news-card__title {
  font-size: 1.0625rem; font-weight: 700; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; margin-bottom: 10px;
}
.news-card__title a { transition: color 0.25s; }
.news-card__title a:hover { color: var(--color-primary); }
.news-card__excerpt {
  font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; margin-bottom: 18px;
}
.news-card__meta { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.news-card__date { font-size: 0.8125rem; color: var(--color-text-secondary); }
.news-card__more {
  font-size: 0.8125rem; font-weight: 600; color: var(--color-primary);
  display: inline-flex; align-items: center; gap: 2px; transition: gap 0.25s;
}
.news-card:hover .news-card__more { gap: 6px; }
.news-empty {
  border: 1.5px dashed var(--color-border); border-radius: var(--radius-card);
  padding: 48px 24px; text-align: center; color: var(--color-text-secondary);
}

/* Testimonials */
.testimonial-slider { max-width: 860px; margin: 0 auto; position: relative; min-height: 220px; }
.testimonial-slide { display: none; text-align: center; padding: 20px 10px; animation: fadeSlide 0.5s ease; }
.testimonial-slide.is-active { display: block; }
.testimonial__quote {
  font-family: Georgia, serif; font-size: 4rem; line-height: 1;
  color: var(--color-accent); display: block; margin-bottom: 4px;
}
.testimonial__text { font-size: 1.125rem; line-height: 1.8; color: var(--color-text); max-width: 720px; margin: 0 auto 24px; }
.testimonial__author { display: flex; align-items: center; justify-content: center; gap: 14px; }
.testimonial__avatar {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--color-primary); color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center; font-size: 1.125rem;
}
.testimonial__author strong { display: block; font-size: 0.9375rem; }
.testimonial__author span { font-size: 0.8125rem; color: var(--color-text-secondary); }
.testimonial-controls { display: flex; align-items: center; justify-content: center; gap: 20px; margin-top: 40px; }
.testimonial-prev, .testimonial-next {
  width: 44px; height: 44px; border: 1.5px solid rgba(var(--color-primary-rgb), 0.3);
  border-radius: 50%; background: transparent; color: var(--color-primary);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.testimonial-prev:hover, .testimonial-next:hover { background: var(--color-primary); color: #fff; }
.testimonial-prev:active, .testimonial-next:active { transform: scale(0.95); }
.testimonial-dots { display: flex; gap: 8px; }
.testimonial-dots .dot {
  width: 8px; height: 8px; border: none; border-radius: 8px;
  background: rgba(var(--color-primary-rgb), 0.2); cursor: pointer; padding: 0;
  transition: width 0.3s, background 0.3s;
}
.testimonial-dots .dot.is-active { width: 24px; background: var(--color-accent); }
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Guarantee */
.guarantee-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.guarantee-item { display: flex; gap: 16px; align-items: center; padding: 20px 24px; position: relative; }
.guarantee-item + .guarantee-item::before {
  content: ""; position: absolute; left: 0; top: 20%; bottom: 20%;
  width: 1px; background: rgba(0,0,0,0.06);
}
.guarantee-item__icon {
  flex: 0 0 48px; width: 48px; height: 48px; border-radius: 50%;
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary); display: flex; align-items: center; justify-content: center;
}
.guarantee-item__title { font-size: 0.9375rem; font-weight: 600; }
.guarantee-item__desc { font-size: 0.8125rem; color: var(--color-text-secondary); }

/* FAQ */
.faq-wrap { max-width: 900px; margin: 0 auto; }
.accordion { background: transparent; }
.accordion-item {
  background: #fff; border-radius: 14px;
  border: 1px solid rgba(31,53,48,0.08);
  margin-bottom: 14px; overflow: hidden;
  transition: border-color 0.3s;
}
.accordion-item.is-active { border-color: rgba(var(--color-primary-rgb), 0.3); }
.accordion-title, .accordion-title:hover, .accordion-title:focus {
  background: transparent; border: 0; color: inherit;
  display: flex; align-items: center; gap: 14px;
  padding: 20px 24px; font-size: 1rem; font-weight: 600; line-height: 1.5;
}
.accordion-title:hover { color: var(--color-primary); }
.accordion-title::before {
  content: "?";
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--color-primary); color: #fff;
  font-size: 0.8125rem; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
  flex: 0 0 24px;
}
.accordion-title::after {
  content: "+"; margin-left: auto;
  font-size: 1.25rem; color: var(--color-text-secondary);
  transition: transform 0.3s;
}
.accordion-item.is-active .accordion-title::after { transform: rotate(45deg); }
.accordion-content, .accordion .accordion-content {
  background: transparent; border: 0;
  padding: 0 24px 20px 62px;
  color: var(--color-text-secondary);
  font-size: 0.9375rem; line-height: 1.8;
}

/* CTA */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary), var(--color-dark));
  color: #FBF7EF; padding: 96px 0; text-align: center;
}
.cta-box h2 { color: #FBF7EF; margin-bottom: 16px; }
.cta-box p { color: rgba(251,247,239,0.78); max-width: 620px; margin: 0 auto 36px; }
.cta-actions { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; }
.cta-note { font-size: 0.8125rem; color: rgba(251,247,239,0.6); margin-top: 24px; }

/* Footer */
.site-footer { background: #1C2D29; color: rgba(251,247,239,0.85); padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; }
.footer-logo { font-size: 1.6rem; font-weight: 700; color: #FBF7EF; font-family: "Noto Serif SC", Georgia, serif; }
.footer-logo span { font-size: 1rem; color: var(--color-accent-light); margin-left: 4px; }
.footer-brand p { font-size: 0.875rem; line-height: 1.7; margin-top: 16px; color: rgba(251,247,239,0.6); }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.14);
  display: flex; align-items: center; justify-content: center;
  color: rgba(251,247,239,0.8); transition: var(--transition);
}
.footer-social a:hover { background: var(--color-accent); color: #16322C; border-color: var(--color-accent); }
.footer-col h4 { font-size: 0.9375rem; color: #FBF7EF; margin-bottom: 18px; font-family: inherit; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 0.875rem; color: rgba(251,247,239,0.6); transition: color 0.25s, padding-left 0.25s; }
.footer-col a:hover { color: var(--color-accent-light); padding-left: 4px; }
.footer-contact li { font-size: 0.875rem; color: rgba(251,247,239,0.6); margin-bottom: 12px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0; display: flex; justify-content: space-between;
  flex-wrap: wrap; gap: 8px; font-size: 0.8125rem; color: rgba(251,247,239,0.5);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero__media { display: none; }
  .hero__stats { grid-template-columns: repeat(4, 1fr); }
  .product-featured { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-story-inner { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .guarantee-grid { grid-template-columns: repeat(2, 1fr); }
  .guarantee-item + .guarantee-item::before { display: none; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; top: 0; right: 0;
    width: min(320px, 86vw); height: 100vh;
    background: var(--color-bg);
    flex-direction: column; align-items: flex-start; justify-content: flex-start;
    gap: 24px; padding: 96px 28px 40px;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    box-shadow: -12px 0 40px rgba(31,53,48,0.12);
    overflow-y: auto;
  }
  body.nav-open .site-nav { transform: translateX(0); }
  .nav-list { flex-direction: column; align-items: flex-start; gap: 18px; width: 100%; }
  .nav-link { font-size: 1.125rem; }
  .nav-cta { margin-top: 12px; width: 100%; }
}

@media (max-width: 640px) {
  :root { --space-section: 64px; }
  .section { padding: var(--space-section) 0; }
  .hero { padding-top: 150px; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .product-side { grid-template-columns: 1fr; }
  .product-card--side { grid-template-columns: 1fr; }
  .product-card--side .product-card__media { aspect-ratio: 16 / 10; flex: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 300px; }
  .testimonial-controls { gap: 12px; }
  .testimonial__text { font-size: 1rem; }
}

/* roulang page: category1 */
:root {
  --color-primary: #1F5E53;
  --color-primary-dark: #16584A;
  --color-primary-deeper: #16322C;
  --color-accent: #C09A5F;
  --color-accent-light: #D2A95C;
  --color-bg: #FAF7F2;
  --color-bg-light: #FFFFFF;
  --color-bg-deep: #1F3530;
  --color-text: #2B2B28;
  --color-text-weak: #6C6B66;
  --color-border: #E8E2D8;
  --radius-card: 18px;
  --radius-btn: 999px;
  --radius-small: 8px;
  --shadow-sm: 0 4px 16px rgba(31,53,48,0.06);
  --shadow-md: 0 12px 32px rgba(31,53,48,0.12);
  --shadow-lg: 0 20px 48px rgba(31,53,48,0.18);
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --space-section: 96px;
  --font-serif: "Noto Serif SC", Georgia, "Songti SC", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color 0.25s ease; }
a:hover { color: var(--color-primary-dark); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 32px;
  border-radius: var(--radius-btn);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.3;
  text-align: center;
  border: 1.5px solid transparent;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  cursor: pointer;
}
.btn:active { transform: scale(0.97); }
.btn:focus-visible { outline: 3px solid rgba(31,94,83,0.35); outline-offset: 2px; }

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #FFFFFF;
  box-shadow: 0 6px 18px rgba(31,94,83,0.25);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #27695d 0%, #1a5a4c 100%);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(31,94,83,0.32);
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
  color: #2B2B28;
  box-shadow: 0 6px 18px rgba(192,154,95,0.28);
}
.btn-accent:hover {
  background: linear-gradient(135deg, #ddb877 0%, #b58c50 100%);
  color: #1F1F1C;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(192,154,95,0.36);
}

.btn-outline-light {
  background: transparent;
  color: #FBF7EF;
  border-color: rgba(251,247,239,0.7);
}
.btn-outline-light:hover {
  background: rgba(251,247,239,0.1);
  color: #FFFFFF;
  border-color: #FBF7EF;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: rgba(31,94,83,0.08);
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(250,247,242,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(31,53,48,0.08);
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
.site-header.is-scrolled {
  background: rgba(250,247,242,0.96);
  box-shadow: 0 4px 24px rgba(31,53,48,0.08);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.brand__mark {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-serif);
  line-height: 1;
  letter-spacing: 0.01em;
}
.brand__text {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.04em;
  padding-bottom: 2px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  position: relative;
  font-size: 0.9375rem;
  font-weight: 500;
  color: #4A4A44;
  padding: 6px 0;
  letter-spacing: 0.01em;
  transition: color 0.25s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}
.nav-link:hover { color: var(--color-primary); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.is-active { color: var(--color-primary); font-weight: 600; }
.nav-link.is-active::after { transform: scaleX(1); }

.nav-cta {
  padding: 11px 28px;
  font-size: 0.875rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 8px;
  border-radius: 8px;
  background: transparent;
  transition: background 0.25s ease;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 24px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle:hover { background: rgba(31,94,83,0.08); }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Category Hero ---------- */
.cat-hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary-deeper) 0%, var(--color-primary) 60%, var(--color-primary-dark) 100%);
  padding: 168px 0 88px;
  overflow: hidden;
}
.cat-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.22;
  mix-blend-mode: overlay;
}
.cat-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(22,50,44,0.55) 0%, rgba(22,50,44,0.15) 100%);
  pointer-events: none;
}
.cat-hero .container { position: relative; z-index: 2; }

.cat-hero__inner { max-width: 780px; }

.cat-hero__tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: var(--radius-btn);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(251,247,239,0.85);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}

.cat-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.3;
  color: #FBF7EF;
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}
.cat-hero h1 .highlight {
  background: linear-gradient(135deg, var(--color-accent-light), #B48A4A);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.cat-hero__desc {
  font-size: 1.125rem;
  line-height: 1.8;
  color: rgba(251,247,239,0.85);
  max-width: 640px;
  margin-bottom: 36px;
}

.cat-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}

.cat-hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding-top: 8px;
}
.cat-hero__stat {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-card);
  padding: 20px 20px;
  backdrop-filter: blur(6px);
  text-align: center;
}
.cat-hero__stat strong {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent-light);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  margin-bottom: 4px;
}
.cat-hero__stat span {
  font-size: 0.8125rem;
  color: rgba(251,247,239,0.7);
}

/* ---------- Section Header ---------- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}
.section-header__tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}
.section-header p {
  font-size: 0.9375rem;
  color: var(--color-text-weak);
  line-height: 1.8;
}

/* ---------- Highlights ---------- */
.cat-highlights {
  padding: var(--space-section) 0;
  background: var(--color-bg);
}
.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.highlight-card {
  background: var(--color-bg-light);
  border-radius: var(--radius-card);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(31,53,48,0.06);
  transition: all var(--transition);
}
.highlight-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.highlight-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(31,94,83,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-primary);
}
.highlight-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.highlight-card p {
  font-size: 0.875rem;
  color: var(--color-text-weak);
  line-height: 1.7;
}

/* ---------- Guide Main ---------- */
.cat-guide {
  padding: var(--space-section) 0;
  background: var(--color-bg-light);
  border-top: 1px solid rgba(31,53,48,0.04);
  border-bottom: 1px solid rgba(31,53,48,0.04);
}
.guide-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 48px;
  align-items: start;
}

.guide-sidenav {
  position: sticky;
  top: 108px;
  background: var(--color-bg);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  border: 1px solid rgba(31,53,48,0.06);
  box-shadow: var(--shadow-sm);
}
.guide-sidenav__title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-weak);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 16px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}
.guide-sidenav ul { display: flex; flex-direction: column; gap: 4px; }
.guide-sidenav a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-weak);
  transition: all 0.25s ease;
}
.guide-sidenav a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-border);
  flex-shrink: 0;
  transition: background 0.25s ease;
}
.guide-sidenav a:hover {
  color: var(--color-primary);
  background: rgba(31,94,83,0.06);
}
.guide-sidenav a:hover::before { background: var(--color-accent); }
.guide-sidenav a.is-active {
  color: var(--color-primary);
  background: rgba(31,94,83,0.08);
  font-weight: 600;
}
.guide-sidenav a.is-active::before { background: var(--color-primary); }

.guide-content__header {
  margin-bottom: 32px;
}
.guide-content__header h2 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}
.guide-content__header p {
  font-size: 0.9375rem;
  color: var(--color-text-weak);
}

.guide-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.guide-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  background: var(--color-bg);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid rgba(31,53,48,0.06);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.guide-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: rgba(31,94,83,0.14);
}
.guide-card__img {
  width: 100%;
  height: 100%;
  min-height: 170px;
  object-fit: cover;
  background: #EFE9E0;
}
.guide-card__body {
  padding: 28px 28px 28px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}
.guide-card__tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--radius-btn);
  background: rgba(192,154,95,0.16);
  color: #8A6B3B;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 10px;
}
.guide-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
}
.guide-card p {
  font-size: 0.875rem;
  color: var(--color-text-weak);
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: gap 0.25s ease, color 0.25s ease;
}
.link-arrow:hover { gap: 10px; color: var(--color-primary-dark); }
.link-arrow span { transition: transform 0.25s ease; }

.guide-loadmore {
  display: flex;
  justify-content: center;
  margin-top: 40px;
}

/* ---------- Scenarios ---------- */
.cat-scenarios {
  padding: var(--space-section) 0;
  background: rgba(31,94,83,0.05);
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.scenario-card {
  background: var(--color-bg-light);
  border-radius: var(--radius-card);
  padding: 32px 26px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(31,53,48,0.06);
  transition: all var(--transition);
}
.scenario-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.scenario-card__num {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.scenario-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.scenario-card p {
  font-size: 0.875rem;
  color: var(--color-text-weak);
  line-height: 1.7;
}

/* ---------- Process ---------- */
.cat-process {
  padding: var(--space-section) 0;
  background: var(--color-bg);
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
.process-step {
  position: relative;
  text-align: center;
  padding: 0 12px;
}
.process-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #FFFFFF;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 56px;
  font-variant-numeric: tabular-nums;
  box-shadow: 0 8px 20px rgba(31,94,83,0.22);
}
.process-step:nth-child(even)::before {
  background: linear-gradient(135deg, var(--color-accent), #A8824A);
}
.process-step h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}
.process-step p {
  font-size: 0.875rem;
  color: var(--color-text-weak);
  line-height: 1.7;
}

/* ---------- FAQ ---------- */
.cat-faq {
  padding: var(--space-section) 0;
  background: var(--color-bg-light);
  border-top: 1px solid rgba(31,53,48,0.04);
}
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: #FFFFFF;
  border-radius: 14px;
  border: 1px solid rgba(31,53,48,0.08);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item.is-open {
  border-color: rgba(31,94,83,0.3);
  box-shadow: var(--shadow-sm);
}
.faq-item__head {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 22px 24px;
  text-align: left;
  background: transparent;
  transition: background 0.25s ease;
}
.faq-item__head:hover { background: rgba(31,94,83,0.03); }
.faq-item__icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(31,94,83,0.1);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.faq-item__title {
  flex: 1;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}
.faq-item__arrow {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-text-weak);
  transition: transform 0.3s ease;
}
.faq-item.is-open .faq-item__arrow { transform: rotate(180deg); color: var(--color-primary); }
.faq-item__body {
  display: none;
  padding: 0 24px 24px 68px;
  font-size: 0.9375rem;
  color: var(--color-text-weak);
  line-height: 1.8;
}
.faq-item.is-open .faq-item__body { display: block; }

/* ---------- CTA ---------- */
.cat-cta {
  padding: 110px 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-deeper) 100%);
  position: relative;
  overflow: hidden;
}
.cat-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
}
.cat-cta .container { position: relative; z-index: 2; text-align: center; }
.cat-cta h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.8vw, 2.3rem);
  font-weight: 700;
  color: #FBF7EF;
  line-height: 1.35;
  margin-bottom: 16px;
}
.cat-cta p {
  font-size: 1rem;
  color: rgba(251,247,239,0.75);
  max-width: 560px;
  margin: 0 auto 36px;
}
.cat-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
}
.cat-cta__note {
  font-size: 0.8125rem;
  color: rgba(251,247,239,0.55);
}

/* ---------- Footer ---------- */
.site-footer {
  background: #1C2D29;
  color: rgba(251,247,239,0.8);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: #FBF7EF;
  margin-bottom: 16px;
}
.footer-logo span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-left: 4px;
}
.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(251,247,239,0.6);
  margin-bottom: 24px;
  max-width: 320px;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255,255,255,0.08);
  color: rgba(251,247,239,0.7);
  transition: all 0.25s ease;
}
.footer-social a:hover {
  background: var(--color-accent);
  color: #1C2D29;
  transform: translateY(-2px);
}
.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #FBF7EF;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-col ul li {
  font-size: 0.875rem;
  line-height: 1.6;
  color: rgba(251,247,239,0.6);
}
.footer-col a {
  color: rgba(251,247,239,0.6);
  transition: color 0.25s ease, padding-left 0.25s ease;
}
.footer-col a:hover {
  color: #FBF7EF;
  padding-left: 4px;
}
.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p {
  font-size: 0.8125rem;
  color: rgba(251,247,239,0.45);
}

/* ---------- Fade Up ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  :root { --space-section: 80px; }
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .guide-layout { grid-template-columns: 220px 1fr; gap: 32px; }
  .cat-hero__stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --space-section: 64px; }
  .nav-wrap { height: 68px; }
  .site-nav {
    position: fixed;
    top: 68px;
    left: 0; right: 0;
    background: rgba(250,247,242,0.98);
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid rgba(31,53,48,0.08);
    box-shadow: 0 16px 40px rgba(31,53,48,0.14);
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s ease;
  }
  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .nav-link {
    display: block;
    padding: 14px 12px;
    font-size: 1.0625rem;
    border-radius: 10px;
  }
  .nav-link.is-active { background: rgba(31,94,83,0.08); }
  .nav-link::after { display: none; }
  .nav-cta { width: 100%; }
  .nav-toggle { display: flex; }
  .cat-hero { padding: 140px 0 72px; }
  .cat-hero__stats { grid-template-columns: repeat(2, 1fr); }
  .guide-layout { grid-template-columns: 1fr; gap: 32px; }
  .guide-sidenav {
    position: static;
    overflow-x: auto;
    display: flex;
    flex-direction: column;
  }
  .guide-sidenav ul {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 4px;
  }
  .guide-sidenav a {
    white-space: nowrap;
    padding: 8px 16px;
    border-radius: 999px;
    background: rgba(31,94,83,0.06);
  }
  .guide-sidenav a.is-active { background: rgba(31,94,83,0.12); }
  .guide-sidenav a::before { display: none; }
  .guide-card { grid-template-columns: 140px 1fr; gap: 16px; }
  .guide-card__body { padding: 20px 20px 20px 0; }
  .guide-card p { -webkit-line-clamp: 3; }
  .faq-item__body { padding-left: 24px; }
}

@media (max-width: 520px) {
  :root { --space-section: 56px; }
  .container { padding: 0 16px; }
  .cat-hero { padding: 130px 0 56px; }
  .cat-hero__desc { font-size: 1rem; }
  .cat-hero__actions { flex-direction: column; }
  .cat-hero__actions .btn { width: 100%; }
  .cat-hero__stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .cat-hero__stat { padding: 16px 12px; border-radius: 14px; }
  .cat-hero__stat strong { font-size: 1.375rem; }
  .cat-hero__stat span { font-size: 0.75rem; }
  .highlight-grid { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; gap: 36px; }
  .guide-card { grid-template-columns: 1fr; }
  .guide-card__img { height: 180px; min-height: 0; }
  .guide-card__body { padding: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .cat-cta { padding: 80px 0; }
  .cat-cta__actions { flex-direction: column; }
  .cat-cta__actions .btn { width: 100%; }
  .faq-item__head { padding: 18px 16px; }
  .faq-item__body { padding: 0 16px 20px; }
}

/* roulang page: article */
:root {
            --color-primary: #1F5E53;
            --color-primary-dark: #16584A;
            --color-primary-soft: rgba(31, 94, 83, 0.08);
            --color-accent: #C09A5F;
            --color-accent-dark: #B48A4A;
            --color-accent-light: #D2A95C;
            --color-bg: #FAF7F2;
            --color-bg-dark: #16322C;
            --color-bg-footer: #1C2D29;
            --color-text: #2B2B28;
            --color-text-secondary: #6C6B66;
            --color-text-muted: #8A8A83;
            --color-border: #E8E2D8;
            --radius-card: 18px;
            --radius-badge: 8px;
            --radius-btn: 999px;
            --radius-lg: 24px;
            --shadow-card: 0 4px 16px rgba(31, 53, 48, 0.06);
            --shadow-hover: 0 12px 32px rgba(31, 53, 48, 0.12);
            --shadow-float: 0 20px 48px rgba(31, 53, 48, 0.18);
            --space-section: 96px;
            --space-section-mobile: 64px;
            --font-serif: 'Noto Serif SC', Georgia, 'Songti SC', serif;
            --font-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
        }

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

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(250, 247, 242, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(31, 53, 48, 0.08);
            transition: box-shadow 0.3s ease, background 0.3s ease;
        }

        .site-header.is-scrolled {
            background: rgba(250, 247, 242, 0.96);
            box-shadow: 0 6px 24px rgba(31, 53, 48, 0.08);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .brand {
            display: flex;
            align-items: baseline;
            gap: 4px;
            flex-shrink: 0;
        }

        .brand__mark {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            font-family: var(--font-serif);
        }

        .brand__text {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary-dark);
            letter-spacing: 0.02em;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-list {
            list-style: none;
            display: flex;
            gap: 24px;
            margin: 0;
        }

        .nav-link {
            font-size: 0.9375rem;
            color: #4A4A44;
            font-weight: 500;
            padding: 8px 2px;
            position: relative;
            display: inline-block;
            transition: color 0.3s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            right: 100%;
            bottom: 2px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-accent);
            transition: right 0.35s cubic-bezier(0.22, 1, 0.36, 1);
        }

        .nav-link:hover {
            color: var(--color-primary);
        }

        .nav-link:hover::after,
        .nav-link.is-active::after {
            right: 0;
        }

        .nav-link.is-active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-cta {
            margin-left: 4px;
            white-space: nowrap;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            padding: 10px;
            cursor: pointer;
            flex-direction: column;
            gap: 5px;
            border-radius: 10px;
            transition: background 0.3s ease;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .nav-toggle:hover {
            background: rgba(31, 94, 83, 0.06);
        }

        .nav-toggle.is-open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.is-open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.is-open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9375rem;
            border: 1.5px solid transparent;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
            text-align: center;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(31, 94, 83, 0.25);
        }

        .btn-primary:active {
            transform: scale(0.97);
            box-shadow: none;
        }

        .btn-outline {
            background: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline:hover {
            background: rgba(31, 94, 83, 0.06);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(31, 94, 83, 0.10);
        }

        .btn-outline:active {
            transform: scale(0.97);
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-dark));
            color: #2B2B28;
            border: none;
        }

        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(192, 154, 95, 0.4);
        }

        .btn-accent:active {
            transform: translateY(-1px) scale(0.97);
        }

        .btn-ghost {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.8);
            transform: translateY(-2px);
        }

        .btn-ghost:active {
            transform: scale(0.97);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(31, 94, 83, 0.35);
            outline-offset: 2px;
        }

        .breadcrumb {
            font-size: 0.8125rem;
            color: var(--color-text-muted);
            padding-top: 32px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color 0.3s ease;
        }

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

        .breadcrumb .sep {
            color: #C9C4BB;
        }

        .breadcrumb .current {
            color: var(--color-primary-dark);
            font-weight: 600;
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-section {
            padding: 40px 0 0;
        }

        .article-header {
            max-width: 820px;
            margin: 0 auto;
            padding: 16px 0 32px;
        }

        .article-title {
            font-family: var(--font-serif);
            font-size: clamp(2rem, 4vw, 2.4rem);
            line-height: 1.3;
            margin: 0 0 20px;
            color: var(--color-text);
            letter-spacing: 0.01em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 0.8125rem;
        }

        .meta-cat {
            background: rgba(192, 154, 95, 0.15);
            color: #8B6B3E;
            padding: 4px 14px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            display: inline-block;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-text-muted);
        }

        .meta-item svg {
            width: 16px;
            height: 16px;
            stroke: var(--color-text-muted);
        }

        .article-content {
            max-width: 820px;
            margin: 0 auto;
            padding: 16px 0 48px;
            border-bottom: 1px solid var(--color-border);
        }

        .article-content p {
            margin: 0 0 28px;
            font-size: 1rem;
            line-height: 1.8;
            color: var(--color-text);
            word-break: break-word;
        }

        .article-content h2 {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            line-height: 1.35;
            margin: 48px 0 20px;
            padding-left: 14px;
            border-left: 4px solid var(--color-primary);
            color: var(--color-text);
        }

        .article-content h3 {
            font-size: 1.125rem;
            font-weight: 600;
            line-height: 1.4;
            margin: 32px 0 16px;
            color: var(--color-text);
        }

        .article-content img {
            border-radius: 16px;
            margin: 32px auto;
            box-shadow: var(--shadow-card);
        }

        .article-content blockquote {
            margin: 32px 0;
            padding: 20px 24px;
            background: rgba(250, 247, 242, 0.95);
            border-left: 4px solid var(--color-accent);
            border-radius: 8px;
            font-family: var(--font-serif);
            font-style: italic;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 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(--color-primary);
        }

        .article-content ol li::marker {
            color: var(--color-primary);
            font-weight: 600;
        }

        .article-content a {
            color: var(--color-primary);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(31, 94, 83, 0.3);
        }

        .article-content a:hover {
            text-decoration-color: var(--color-primary);
            text-decoration-width: 2px;
        }

        .article-content code {
            background: #1F3530;
            color: #E8E2D8;
            padding: 2px 8px;
            border-radius: 6px;
            font-family: 'SFMono-Regular', Consolas, monospace;
            font-size: 0.875em;
        }

        .article-content pre {
            background: #1F3530;
            color: #E8E2D8;
            padding: 20px;
            border-radius: 8px;
            overflow-x: auto;
            margin: 32px 0;
            line-height: 1.6;
        }

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

        .article-content figure {
            margin: 32px 0;
        }

        .article-content figcaption {
            text-align: center;
            font-size: 0.8125rem;
            color: var(--color-text-muted);
            margin-top: 8px;
        }

        .article-extras {
            max-width: 820px;
            margin: 0 auto;
            padding: 32px 0 48px;
        }

        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }

        .article-tags .label {
            font-size: 0.8125rem;
            color: var(--color-text-muted);
            margin-right: 4px;
        }

        .tag {
            display: inline-block;
            background: rgba(31, 94, 83, 0.06);
            color: var(--color-primary-dark);
            padding: 5px 14px;
            border-radius: var(--radius-btn);
            font-size: 0.8125rem;
            font-weight: 500;
            border: 1px solid transparent;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .tag:hover {
            border-color: var(--color-primary);
            background: rgba(31, 94, 83, 0.10);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 32px;
        }

        .article-share .share-label {
            font-size: 0.8125rem;
            color: var(--color-text-muted);
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(31, 94, 83, 0.06);
            color: var(--color-primary);
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }

        .share-btn:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        .share-btn svg {
            width: 18px;
            height: 18px;
            stroke: currentColor;
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .article-prev-next {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            max-width: 820px;
            margin: 0 auto;
        }

        .pn-item {
            flex: 1;
            min-width: 0;
        }

        .pn-item a,
        .pn-disabled {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 16px;
            border-radius: 14px;
            background: #fff;
            border: 1px solid rgba(31, 53, 48, 0.08);
            transition: all 0.3s ease;
            font-size: 0.9375rem;
            color: var(--color-text);
            min-height: 56px;
        }

        .pn-item a:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .pn-item.next a {
            justify-content: flex-end;
            text-align: right;
        }

        .pn-disabled {
            color: var(--color-text-muted);
            background: rgba(255, 255, 255, 0.5);
            cursor: default;
        }

        .pn-arrow {
            color: var(--color-accent);
            font-size: 1.125rem;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .pn-item.prev a:hover .pn-arrow {
            transform: translateX(-4px);
        }

        .pn-item.next a:hover .pn-arrow {
            transform: translateX(4px);
        }

        .pn-text {
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
        }

        .related-section {
            background: #fff;
            padding: var(--space-section) 0;
            margin-top: 48px;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .section-head h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            line-height: 1.35;
            margin: 0;
            color: var(--color-text);
        }

        .more-link {
            font-size: 0.9375rem;
            color: var(--color-primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease;
        }

        .more-link:hover {
            gap: 10px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 48px;
        }

        .related-card {
            background: var(--color-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid rgba(31, 53, 48, 0.06);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }

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

        .related-card .card-cover {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--color-border);
        }

        .related-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .related-card:hover .card-cover img {
            transform: scale(1.04);
        }

        .related-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-card .card-body h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            line-height: 1.4;
            margin: 0 0 10px;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body p {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0 0 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8125rem;
            margin-top: auto;
            border-top: 1px solid rgba(31, 53, 48, 0.06);
            padding-top: 12px;
        }

        .related-card .card-meta .date {
            color: var(--color-text-muted);
        }

        .related-card .card-meta a {
            color: var(--color-primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.3s ease;
        }

        .related-card .card-meta a:hover {
            gap: 8px;
        }

        .related-cta {
            text-align: center;
            margin-top: 8px;
        }

        .empty-article {
            max-width: 620px;
            margin: 80px auto;
            text-align: center;
            padding: 60px 40px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1.5px dashed var(--color-border);
        }

        .empty-article .empty-icon {
            margin-bottom: 20px;
        }

        .empty-article h2 {
            font-family: var(--font-serif);
            font-size: 1.8rem;
            margin-bottom: 10px;
            color: var(--color-text);
        }

        .empty-article p {
            color: var(--color-text-secondary);
            margin-bottom: 28px;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-bg-dark) 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }

        .cta-inner {
            position: relative;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            z-index: 1;
        }

        .cta-inner h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.8rem, 3vw, 2.2rem);
            color: #FBF7EF;
            margin: 0 0 16px;
        }

        .cta-inner p {
            color: rgba(251, 247, 239, 0.8);
            font-size: 1rem;
            margin-bottom: 32px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-safe {
            font-size: 0.8125rem;
            color: rgba(251, 247, 239, 0.6);
            margin-top: 24px;
        }

        .site-footer {
            background: var(--color-bg-footer);
            color: rgba(255, 255, 255, 0.85);
            padding: 64px 0 0;
            font-size: 0.9375rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: #FBF7EF;
            margin-bottom: 12px;
            font-family: var(--font-serif);
            display: flex;
            align-items: baseline;
            gap: 4px;
        }

        .footer-logo span {
            font-size: 1rem;
            color: var(--color-accent-light);
        }

        .footer-brand p {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin: 0 0 20px;
            max-width: 280px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid transparent;
            color: rgba(255, 255, 255, 0.8);
            transition: all 0.3s ease;
        }

        .footer-social a:hover {
            background: var(--color-accent);
            color: #2B2B28;
            border-color: var(--color-accent);
            transform: translateY(-3px);
        }

        .footer-col h4 {
            font-size: 0.9375rem;
            font-weight: 600;
            color: #FBF7EF;
            margin: 0 0 16px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .footer-col ul li a:hover {
            color: var(--color-accent-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom p {
            margin: 0;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: var(--space-section-mobile);
            }

            .nav-toggle {
                display: inline-flex;
            }

            .site-nav {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(250, 247, 242, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: stretch;
                padding: 24px;
                gap: 20px;
                box-shadow: 0 20px 40px rgba(31, 53, 48, 0.12);
                border-bottom: 1px solid rgba(31, 53, 48, 0.08);
                transform: translateY(-16px);
                opacity: 0;
                visibility: hidden;
                transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s;
            }

            .site-nav.is-open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-list {
                flex-direction: column;
                gap: 8px;
            }

            .nav-link {
                padding: 12px 8px;
                font-size: 1.0625rem;
                display: block;
            }

            .nav-link::after {
                left: 8px;
                right: auto;
                width: 0;
                bottom: 4px;
            }

            .nav-link:hover::after,
            .nav-link.is-active::after {
                width: 28px;
            }

            .nav-cta {
                margin-left: 0;
                text-align: center;
            }

            .breadcrumb {
                padding-top: 16px;
                font-size: 0.75rem;
                gap: 4px;
            }

            .article-section {
                padding: 16px 0 0;
            }

            .article-header {
                padding: 8px 0 20px;
            }

            .article-title {
                font-size: 1.6rem;
                margin-bottom: 14px;
            }

            .article-meta {
                gap: 10px;
                font-size: 0.75rem;
            }

            .article-content {
                padding: 8px 0 32px;
            }

            .article-content h2 {
                font-size: 1.3rem;
                margin-top: 36px;
            }

            .article-content p {
                font-size: 0.9687rem;
                line-height: 1.8;
            }

            .article-extras {
                padding: 20px 0 32px;
            }

            .article-prev-next {
                flex-direction: column;
                gap: 12px;
            }

            .pn-item.next a {
                justify-content: flex-start;
                text-align: left;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
                margin-bottom: 32px;
            }

            .section-head {
                margin-bottom: 24px;
            }

            .section-head h2 {
                font-size: 1.5rem;
            }

            .cta-section {
                padding: 56px 0;
            }

            .cta-inner h2 {
                font-size: 1.5rem;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                padding: 20px 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .nav-wrap {
                height: 64px;
            }

            .brand__mark {
                font-size: 1.4rem;
            }

            .brand__text {
                font-size: 1rem;
            }

            .site-nav {
                top: 64px;
                padding: 16px;
            }

            .breadcrumb .current {
                max-width: 120px;
            }

            .article-title {
                font-size: 1.4rem;
            }

            .meta-item {
                font-size: 0.718rem;
            }

            .btn {
                padding: 11px 22px;
                font-size: 0.875rem;
            }

            .article-content p {
                font-size: 0.95rem;
            }

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

        @media (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }