/* roulang page: index */
:root {
  --primary: #0A5C4E;
  --primary-dark: #07463C;
  --gold: #C6A56E;
  --dark-green: #0A2A24;
  --warm-bg: #F6F5F1;
  --card-bg: #FFFFFF;
  --text-main: #1E2D29;
  --text-weak: #6B7A76;
  --border: #E8E3D9;
  --radius-card: 14px;
  --radius-img: 10px;
  --radius-btn: 8px;
  --shadow-card: 0 2px 12px rgba(10,42,36,0.06);
  --shadow-hover: 0 8px 24px rgba(10,42,36,0.10);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'sans-serif';
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--warm-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 20px; padding-right: 20px; }
@media (min-width: 1024px) { .container { padding-left: 40px; padding-right: 40px; } }

/* header */
#site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
#site-header.scrolled {
  background: rgba(247,246,242,0.96);
  border-bottom: 1px solid var(--gold);
  box-shadow: 0 2px 10px rgba(10,42,36,0.05);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 38px; height: 38px; border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), var(--dark-green));
  display: flex; align-items: center; justify-content: center;
  color: var(--gold); font-size: 16px; font-weight: 800;
  flex-shrink: 0;
}
.logo-text { font-size: 17px; font-weight: 800; color: var(--dark-green); letter-spacing: .02em; white-space: nowrap; }
.main-nav ul { display: flex; align-items: center; gap: 36px; }
.main-nav a {
  font-size: 15px; font-weight: 500; color: #3A4A46;
  position: relative; padding-bottom: 4px; transition: color .25s;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a.active { color: var(--primary); font-weight: 700; }
.main-nav a.active::after {
  content: ''; position: absolute; bottom: -4px; left: 50%; transform: translateX(-50%);
  width: 6px; height: 6px; border-radius: 50%; background: var(--gold);
}
.nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 20px; background: var(--primary); color: #fff;
  border-radius: var(--radius-btn); font-weight: 600; font-size: 14px;
  transition: background .25s, transform .25s, box-shadow .25s;
}
.nav-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(10,92,78,0.2); color: #fff; }
.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.menu-toggle span { width: 24px; height: 2px; background: var(--dark-green); border-radius: 2px; transition: transform .3s, opacity .3s; }
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  display: none; background: #fff; border-top: 1px solid var(--border);
  padding: 12px 20px 20px;
}
.mobile-menu ul { display: flex; flex-direction: column; gap: 4px; }
.mobile-menu a {
  display: block; padding: 12px 8px; font-size: 16px; font-weight: 500;
  color: var(--text-main); border-radius: 8px;
}
.mobile-menu a:hover, .mobile-menu a.active { background: rgba(10,92,78,0.08); color: var(--primary); }
@media (max-width: 768px) {
  .main-nav { display: none; }
  .menu-toggle { display: flex; }
  .mobile-menu.open { display: block; }
  .logo-text { font-size: 15px; }
}

/* hero */
.hero {
  position: relative;
  background-image: linear-gradient(160deg, rgba(10,42,36,0.70) 0%, rgba(10,92,78,0.20) 100%), url('/assets/images/backpic/back-1.png');
  background-size: cover; background-position: center;
  color: #fff; padding: 168px 0 120px;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border: 1px solid rgba(255,255,255,0.35);
  border-radius: 30px; font-size: 13px; letter-spacing: .08em;
  background: rgba(255,255,255,0.08); margin-bottom: 24px;
}
.hero h1 {
  font-size: 44px; font-weight: 800; line-height: 1.2;
  max-width: 760px; margin-bottom: 20px;
}
.hero-sub {
  font-size: 17px; line-height: 1.8; color: rgba(255,255,255,0.90);
  max-width: 620px; margin-bottom: 36px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
@media (max-width: 768px) {
  .hero { padding: 120px 0 80px; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 15px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 48px; padding: 0 30px; border-radius: var(--radius-btn);
  font-size: 15px; font-weight: 600; transition: all .25s ease;
  border: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(10,92,78,0.3); color: #fff; }
.btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.7); }
.btn-outline:hover { background: rgba(198,165,110,0.12); border-color: var(--gold); color: #fff; transform: translateY(-2px); }
.btn-gold { background: var(--gold); color: var(--dark-green); }
.btn-gold:hover { background: #D9BC84; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(198,165,110,0.35); color: var(--dark-green); }
.btn-outline-dark { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline-dark:hover { background: rgba(10,92,78,0.08); border-color: var(--dark-green); color: var(--dark-green); }

/* section */
.section { padding: 72px 0; }
.section + .section { border-top: 1px solid var(--border); }
.section-head { margin-bottom: 48px; }
.section-tag {
  display: inline-block; font-size: 12px; font-weight: 700;
  color: var(--primary); letter-spacing: .12em; text-transform: uppercase;
  padding: 4px 14px; background: rgba(10,92,78,0.08); border-radius: 20px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 30px; font-weight: 700; line-height: 1.3;
  color: var(--dark-green); margin-bottom: 12px;
}
.section-desc { font-size: 15px; color: var(--text-weak); max-width: 620px; }
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .section-title { font-size: 22px; }
  .section-head { margin-bottom: 28px; }
}

/* stats */
.stats { background: #fff; border-bottom: 1px solid var(--border); padding: 32px 0; margin-top: -40px; position: relative; z-index: 5; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-item { text-align: center; padding: 16px 8px; }
.stat-item .stat-num {
  font-size: 38px; font-weight: 800; color: var(--primary); line-height: 1.1;
}
.stat-item .stat-num span { color: var(--gold); }
.stat-item .stat-label { font-size: 13px; color: var(--text-weak); margin-top: 6px; letter-spacing: .04em; }
@media (max-width: 768px) {
  .stats { margin-top: -16px; padding: 20px 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-item .stat-num { font-size: 28px; }
}

/* feature rows */
.feature-row {
  display: grid; gap: 40px; align-items: center;
  margin-bottom: 64px;
}
.feature-row:last-child { margin-bottom: 0; }
.feature-row:nth-of-type(1) { grid-template-columns: 7fr 5fr; }
.feature-row:nth-of-type(2) { grid-template-columns: 8fr 4fr; }
.feature-row:nth-of-type(3) { grid-template-columns: 7fr 5fr; }
.feature-row:nth-of-type(2) .feature-visual { order: 2; }
.feature-row:nth-of-type(2) .feature-content { order: 1; }
.feature-image-wrap { position: relative; }
.feature-image-wrap::before {
  content: ''; position: absolute; top: -16px; left: -16px;
  width: 56px; height: 56px; border-radius: 50%;
  border: 2px solid rgba(198,165,110,0.4); z-index: 0;
}
.feature-image-wrap img {
  position: relative; z-index: 1;
  width: 100%; height: 340px; object-fit: cover;
  border-radius: var(--radius-card); box-shadow: var(--shadow-card);
}
.feature-label { font-size: 12px; font-weight: 700; color: var(--gold); letter-spacing: .12em; margin-bottom: 8px; }
.feature-title { font-size: 24px; font-weight: 700; color: var(--dark-green); margin-bottom: 12px; line-height: 1.35; }
.feature-desc { font-size: 15px; color: var(--text-weak); line-height: 1.85; margin-bottom: 20px; }
.feature-list { display: flex; flex-direction: column; gap: 10px; }
.feature-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; color: #33433E;
}
.feature-list li::before {
  content: ''; flex-shrink: 0; width: 6px; height: 6px;
  border-radius: 50%; background: var(--primary); margin-top: 8px;
}
@media (max-width: 1024px) {
  .feature-row:nth-of-type(1), .feature-row:nth-of-type(2), .feature-row:nth-of-type(3) { grid-template-columns: 1fr; }
  .feature-row:nth-of-type(2) .feature-visual { order: 0; }
  .feature-row:nth-of-type(2) .feature-content { order: 0; }
  .feature-image-wrap img { height: 240px; width: 100%; }
  .feature-title { font-size: 20px; }
}

/* cases */
.cases { background: #fff; }
.cases-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.case-card {
  border-radius: var(--radius-card); overflow: hidden;
  background: #fff; box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
  display: block;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.case-card-image { height: 180px; overflow: hidden; }
.case-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.case-card:hover .case-card-image img { transform: scale(1.05); }
.case-card-body { padding: 20px 20px 24px; }
.case-card-tag {
  display: inline-block; font-size: 11px; font-weight: 600;
  color: var(--primary); background: rgba(10,92,78,0.08);
  padding: 2px 10px; border-radius: 12px; margin-bottom: 10px;
  letter-spacing: .05em;
}
.case-card-title { font-size: 17px; font-weight: 700; color: var(--dark-green); margin-bottom: 8px; line-height: 1.4; }
.case-card-desc { font-size: 13px; color: var(--text-weak); line-height: 1.7; }
@media (max-width: 1024px) {
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .cases-grid { grid-template-columns: 1fr; }
}

/* news */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card {
  display: block; background: #fff; border-radius: var(--radius-card);
  overflow: hidden; box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.news-thumb { height: 190px; overflow: hidden; position: relative; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.news-card:hover .news-thumb img { transform: scale(1.04); }
.news-content { padding: 18px 20px 20px; }
.news-cate { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--primary); font-weight: 600; margin-bottom: 8px; }
.gold-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--gold); }
.news-title { font-size: 18px; font-weight: 700; color: var(--dark-green); line-height: 1.45; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-summary { font-size: 13px; color: var(--text-weak); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; }
.news-footer { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid #F1EFEA; padding-top: 12px; }
.news-footer time { font-size: 12px; color: #9AA5A1; }
.read-more { font-size: 13px; font-weight: 600; color: var(--primary); transition: color .3s; }
.news-card:hover .read-more { color: var(--gold); }
.news-empty {
  padding: 48px 24px; background: #fff; border-radius: var(--radius-card);
  text-align: center; color: var(--text-weak); font-size: 15px;
}
.news-more { text-align: center; margin-top: 36px; }
@media (max-width: 768px) {
  .news-grid { grid-template-columns: 1fr; }
  .news-thumb { height: 160px; }
}

/* faq */
.faq-wrap { display: grid; grid-template-columns: 4fr 8fr; gap: 64px; }
.faq-left h2 { font-size: 30px; font-weight: 700; color: var(--dark-green); margin-bottom: 14px; line-height: 1.3; }
.faq-left p { font-size: 15px; color: var(--text-weak); margin-bottom: 24px; line-height: 1.85; }
.faq-left .btn { margin-top: 4px; }
.faq-item {
  background: #fff; border-radius: 12px; box-shadow: var(--shadow-card);
  margin-bottom: 14px; overflow: hidden;
  transition: box-shadow .3s ease;
}
.faq-item:hover { box-shadow: var(--shadow-hover); }
.faq-item.open { box-shadow: var(--shadow-hover); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; font-size: 16px; font-weight: 600;
  color: var(--text-main); cursor: pointer; text-align: left; width: 100%;
  background: #fff; transition: color .25s;
}
.faq-question:hover { color: var(--primary); }
.faq-icon { position: relative; width: 18px; height: 18px; flex-shrink: 0; transition: transform .3s; }
.faq-icon::before, .faq-icon::after {
  content: ''; position: absolute; background: var(--primary); border-radius: 2px;
}
.faq-icon::before { top: 8px; left: 0; width: 18px; height: 2px; }
.faq-icon::after { top: 0; left: 8px; width: 2px; height: 18px; transition: transform .3s; }
.faq-item.open .faq-icon::after { transform: scaleY(0); }
.faq-item.open .faq-icon { transform: rotate(180deg); }
.faq-answer { display: none; padding: 0 22px 18px; font-size: 14px; line-height: 1.75; color: #4A5A55; background: #FAFAF7; }
.faq-item.open .faq-answer { display: block; padding-top: 4px; }
@media (max-width: 900px) {
  .faq-wrap { grid-template-columns: 1fr; gap: 28px; }
  .faq-left h2 { font-size: 22px; }
}

/* cta band */
.cta-band {
  background: linear-gradient(120deg, var(--primary) 0%, var(--dark-green) 100%);
  padding: 64px 0; position: relative; overflow: hidden;
  border-top: 2px solid var(--gold);
}
.cta-band::before {
  content: ''; position: absolute; top: -40px; right: -40px;
  width: 180px; height: 140px; border: 2px solid rgba(198,165,110,0.25);
  border-radius: 50%; transform: rotate(30deg);
}
.cta-band::after {
  content: ''; position: absolute; bottom: -50px; left: 60px;
  width: 220px; height: 160px; border: 2px solid rgba(255,255,255,0.08);
  border-radius: 50%; transform: rotate(-20deg);
}
.cta-inner { text-align: center; position: relative; z-index: 2; }
.cta-title { font-size: 28px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.cta-desc { font-size: 15px; color: rgba(255,255,255,0.85); margin-bottom: 28px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
@media (max-width: 640px) {
  .cta-title { font-size: 22px; }
  .cta-buttons { flex-direction: column; width: 100%; }
  .cta-buttons .btn { width: 100%; justify-content: center; }
}

/* footer */
footer {
  background: var(--dark-green); color: #A8BCB5;
  padding-top: 56px;
}
.footer-grid { display: grid; grid-template-columns: 2.2fr 1fr 1.5fr 1.4fr; gap: 40px; padding-bottom: 40px; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-logo .logo-text { color: #fff; font-size: 18px; }
.footer-brand-desc { font-size: 13px; line-height: 1.8; margin-bottom: 14px; max-width: 280px; }
.footer-domain { font-size: 12px; color: #7E938C; letter-spacing: .05em; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; letter-spacing: .03em; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 13px; color: #A8BCB5; transition: color .25s; }
.footer-col a:hover { color: var(--gold); }
.footer-contact-list li { display: flex; gap: 10px; font-size: 13px; margin-bottom: 12px; line-height: 1.6; }
.footer-contact-list i { color: var(--gold); font-size: 14px; margin-top: 3px; width: 16px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.10);
  padding: 20px 0; text-align: center;
  font-size: 13px; color: #7E938C;
}
.footer-bottom a { color: #7E938C; }
.footer-bottom a:hover { color: var(--gold); }
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* focus states */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-radius: 4px;
}

.back-to-top {
  position: fixed; bottom: 32px; right: 32px; z-index: 60;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(10,92,78,0.3);
  transition: all .3s ease; opacity: 0; visibility: hidden;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--gold); transform: translateY(-3px); color: var(--dark-green); }
@media (max-width: 640px) { .back-to-top { bottom: 20px; right: 20px; } }

/* roulang page: category1 */
:root {
    --primary: #0A5C4E;
    --primary-dark: #07463C;
    --gold: #C6A56E;
    --gold-light: #D8BC88;
    --deep: #0A2A24;
    --bg: #F6F5F1;
    --white: #FFFFFF;
    --mist: #FAFAF7;
    --text: #1C2B28;
    --text-light: #5C6B65;
    --border: #E8E3D9;
    --radius: 14px;
    --radius-sm: 10px;
    --radius-btn: 8px;
    --shadow: 0 2px 12px rgba(10, 42, 36, 0.06);
    --shadow-hover: 0 8px 24px rgba(10, 42, 36, 0.10);
    --container: 1200px;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
  }

  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
  }

  ul,
  ol {
    list-style: none;
  }

  .container {
    max-width: var(--container);
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  @media (min-width: 768px) {
    .container {
      padding-left: 40px;
      padding-right: 40px;
    }
  }

  /* ========== HEADER / NAV ========== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: transparent;
    transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
    border-bottom: 1px solid transparent;
  }

  .site-header.scrolled {
    background: rgba(247, 246, 242, 0.96);
    border-bottom-color: rgba(198, 165, 110, 0.4);
    box-shadow: 0 4px 20px rgba(10, 42, 36, 0.05);
  }

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

  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
  }

  .logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--deep);
    letter-spacing: 0.02em;
    white-space: nowrap;
  }

  .site-header.scrolled .logo-text {
    color: var(--deep);
  }

  .main-nav ul {
    display: flex;
    align-items: center;
    gap: 32px;
  }

  .main-nav a {
    font-size: 15px;
    font-weight: 500;
    color: #3d4b46;
    position: relative;
    padding: 6px 2px;
    white-space: nowrap;
  }

  .main-nav a::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--gold);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width .25s ease;
  }

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

  .main-nav a:hover::after {
    width: 100%;
  }

  .main-nav a.active {
    color: var(--primary);
    font-weight: 700;
  }

  .main-nav a.active::after {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gold);
    left: 50%;
    bottom: -4px;
    transform: translateX(-50%);
  }

  .main-nav .nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-btn);
    padding: 10px 22px;
    font-weight: 600;
    box-shadow: var(--shadow);
    transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
  }

  .main-nav .nav-cta::after {
    display: none;
  }

  .main-nav .nav-cta:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(10, 92, 78, 0.25);
  }

  .nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border-radius: 8px;
    border: 1px solid rgba(10, 42, 36, 0.12);
    background: rgba(255, 255, 255, 0.6);
  }

  .nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--deep);
    border-radius: 2px;
    transition: transform .25s ease, opacity .25s ease;
  }

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

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

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

  @media (max-width: 767.98px) {
    .nav-toggle {
      display: flex;
    }

    .main-nav {
      position: fixed;
      top: 72px;
      left: 0;
      right: 0;
      background: rgba(247, 246, 242, 0.98);
      border-bottom: 1px solid var(--border);
      border-top: 1px solid var(--border);
      padding: 18px 24px 28px;
      box-shadow: 0 20px 40px rgba(10, 42, 36, 0.10);
      transform: translateY(-8px);
      opacity: 0;
      visibility: hidden;
      transition: opacity .25s ease, transform .25s ease, visibility .25s;
    }

    .main-nav.open {
      opacity: 1;
      visibility: visible;
      transform: none;
    }

    .main-nav ul {
      flex-direction: column;
      align-items: stretch;
      gap: 2px;
    }

    .main-nav ul li a {
      display: block;
      padding: 14px 8px;
      font-size: 16px;
      border-radius: 8px;
    }

    .main-nav a::after,
    .main-nav a.active::after {
      display: none;
    }

    .main-nav a.active {
      background: rgba(10, 92, 78, 0.08);
    }

    .main-nav .nav-cta {
      margin-top: 12px;
      justify-content: center;
    }
  }

  /* ========== BUTTONS ========== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 48px;
    padding: 0 30px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.03em;
    transition: all .25s ease;
    border: 1.5px solid transparent;
    white-space: nowrap;
  }

  .btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(10, 92, 78, 0.2);
  }

  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(10, 92, 78, 0.28);
  }

  .btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.85);
  }

  .btn-outline:hover {
    background: rgba(198, 165, 110, 0.15);
    border-color: var(--gold);
    transform: translateY(-2px);
  }

  .btn-gold {
    background: var(--gold);
    color: var(--deep);
    box-shadow: 0 4px 16px rgba(198, 165, 110, 0.3);
  }

  .btn-gold:hover {
    background: var(--gold-light);
    color: var(--deep);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(198, 165, 110, 0.4);
  }

  a:focus-visible,
  button:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
    border-radius: 4px;
  }

  /* ========== HERO ========== */
  .page-hero {
    position: relative;
    padding: 150px 0 90px;
    background-size: cover;
    background-position: center;
    color: #fff;
    overflow: hidden;
  }

  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(10, 42, 36, 0.72) 0%, rgba(10, 42, 36, 0.5) 45%, rgba(10, 92, 78, 0.28) 100%);
  }

  .page-hero::after {
    content: '';
    position: absolute;
    right: -60px;
    bottom: -60px;
    width: 260px;
    height: 260px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Cpath d='M20 0L40 20L20 40L0 20Z' fill='none' stroke='%23C6A56E' stroke-width='0.5' opacity='0.25'/%3E%3C/svg%3E");
    background-size: 40px 40px;
    opacity: 0.5;
  }

  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 28px;
  }

  .breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
  }

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

  .page-hero h1 {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 22px;
    letter-spacing: 0.01em;
  }

  .hero-lead {
    max-width: 640px;
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 34px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
  }

  @media (max-width: 767.98px) {
    .page-hero {
      padding: 130px 0 60px;
    }

    .page-hero h1 {
      font-size: 32px;
    }

    .hero-lead {
      font-size: 15px;
    }

    .hero-actions .btn {
      width: 100%;
    }
  }

  /* ========== SECTIONS ========== */
  .section {
    padding: 72px 0;
  }

  .section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--primary);
    text-transform: uppercase;
    margin-bottom: 14px;
  }

  .section-tag::before {
    content: '';
    width: 20px;
    height: 2px;
    background: var(--gold);
    display: inline-block;
    border-radius: 2px;
  }

  .section-head {
    margin-bottom: 44px;
  }

  .section-head h2 {
    font-size: 30px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--deep);
  }

  .section-head p {
    color: var(--text-light);
    font-size: 15px;
    max-width: 560px;
    margin-top: 10px;
  }

  @media (max-width: 767.98px) {
    .section {
      padding: 56px 0;
    }

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

  /* ========== INTRO BLOCK ========== */
  .intro-block .intro-copy p {
    color: var(--text-light);
    margin-bottom: 18px;
  }

  .feature-list li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 12px;
    color: var(--text);
    font-size: 15px;
  }

  .feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
  }

  .image-wrap {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
  }

  .image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
  }

  .image-wrap:hover img {
    transform: scale(1.03);
  }

  .image-wrap::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid rgba(198, 165, 110, 0.35);
    top: -20px;
    right: -20px;
    pointer-events: none;
  }

  /* ========== DIRECTIONS ========== */
  .directions {
    background: var(--white);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .direction-card {
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 32px;
    transition: all .3s ease;
  }

  .direction-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(10, 92, 78, 0.2);
  }

  .direction-card .direction-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(10, 92, 78, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 18px;
  }

  .direction-card h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--deep);
    margin-bottom: 10px;
  }

  .direction-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
  }

  .direction-card.dark {
    background: var(--deep);
    border-color: var(--deep);
  }

  .direction-card.dark .direction-icon {
    background: rgba(198, 165, 110, 0.16);
    color: var(--gold);
  }

  .direction-card.dark h3 {
    color: #fff;
  }

  .direction-card.dark p {
    color: rgba(255, 255, 255, 0.72);
  }

  /* ========== CASES ========== */
  .case-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: center;
    margin-bottom: 52px;
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: box-shadow .3s ease;
  }

  .case-row:last-child {
    margin-bottom: 0;
  }

  .case-row:hover {
    box-shadow: var(--shadow-hover);
  }

  .case-media {
    position: relative;
    overflow: hidden;
    min-height: 260px;
  }

  .case-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
  }

  .case-row:hover .case-media img {
    transform: scale(1.03);
  }

  .case-info {
    padding: 24px;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(10, 92, 78, 0.08);
    padding: 5px 12px;
    border-radius: 20px;
    margin-bottom: 12px;
  }

  .badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gold);
  }

  .case-info h3 {
    font-size: 21px;
    font-weight: 700;
    color: var(--deep);
    margin-bottom: 10px;
    line-height: 1.4;
  }

  .case-info p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.75;
    margin-bottom: 18px;
  }

  .case-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
  }

  .case-stats li {
    font-size: 13px;
    color: var(--text-light);
  }

  .case-stats strong {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.3;
  }

  @media (min-width: 1024px) {
    .case-row {
      grid-template-columns: 7fr 5fr;
    }

    .case-row.reverse {
      grid-template-columns: 5fr 7fr;
    }

    .case-row.reverse .case-media {
      order: 2;
    }

    .case-row.reverse .case-info {
      order: 1;
    }
  }

  /* ========== PROCESS ========== */
  .process {
    background: var(--deep);
    color: #fff;
  }

  .process .section-head h2 {
    color: #fff;
  }

  .process .section-head p {
    color: rgba(255, 255, 255, 0.65);
  }

  .process-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
  }

  .process-item {
    position: relative;
    padding: 28px 24px 28px 68px;
    border-left: 1px solid rgba(255, 255, 255, 0.14);
  }

  .process-item::before {
    content: attr(data-step);
    position: absolute;
    left: -18px;
    top: 28px;
    width: 36px;
    height: 36px;
    background: var(--gold);
    color: var(--deep);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    border: 3px solid var(--deep);
  }

  .process-item h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
    color: #fff;
  }

  .process-item p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.68);
    line-height: 1.7;
  }

  @media (min-width: 768px) {
    .process-grid {
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
    }

    .process-item {
      padding: 24px 16px 0 0;
      border-left: none;
      border-top: 1px solid rgba(255, 255, 255, 0.14);
    }

    .process-item::before {
      left: 0;
      top: -18px;
    }
  }

  /* ========== OTHER LINKS ========== */
  .link-card {
    display: block;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    position: relative;
    overflow: hidden;
    transition: all .3s ease;
  }

  .link-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(10, 92, 78, 0.25);
  }

  .link-card .link-arrow {
    position: absolute;
    right: 22px;
    top: 28px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(10, 92, 78, 0.08);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: background .25s ease, color .25s ease, transform .25s ease;
  }

  .link-card:hover .link-arrow {
    background: var(--primary);
    color: #fff;
    transform: translateX(3px);
  }

  .link-card .link-icon {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 18px;
    display: block;
  }

  .link-card h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--deep);
    margin-bottom: 8px;
  }

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

  .link-card-large {
    background: var(--primary);
    border-color: var(--primary);
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 260px;
  }

  .link-card-large:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
  }

  .link-card-large .link-icon {
    color: var(--gold);
  }

  .link-card-large h3 {
    color: #fff;
    font-size: 22px;
  }

  .link-card-large p {
    color: rgba(255, 255, 255, 0.75);
  }

  .link-card-large .link-arrow {
    background: rgba(255, 255, 255, 0.12);
    color: var(--gold);
  }

  /* ========== FAQ ========== */
  .faq-section {
    background: var(--white);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .faq-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .faq-intro h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--deep);
    line-height: 1.3;
    margin-bottom: 16px;
  }

  .faq-intro p {
    color: var(--text-light);
    font-size: 15px;
    margin-bottom: 24px;
  }

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

  .faq-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .faq-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color .25s ease, box-shadow .25s ease;
  }

  .faq-item.active {
    border-color: rgba(10, 92, 78, 0.28);
    box-shadow: var(--shadow);
  }

  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 22px;
    font-size: 16px;
    font-weight: 600;
    color: var(--deep);
    text-align: left;
    border-radius: 12px;
  }

  .faq-toggle {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background: rgba(10, 92, 78, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
    transition: transform .3s ease, background .3s ease;
  }

  .faq-item.active .faq-toggle {
    transform: rotate(45deg);
    background: var(--primary);
    color: #fff;
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
  }

  .faq-item.active .faq-answer {
    max-height: 300px;
  }

  .faq-answer-inner {
    padding: 0 22px 20px;
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    background: var(--mist);
    border-top: 1px solid var(--border);
    padding-top: 16px;
    margin: 0;
  }

  @media (min-width: 1024px) {
    .faq-layout {
      grid-template-columns: 5fr 7fr;
      gap: 64px;
    }
  }

  /* ========== CTA ========== */
  .cta-band {
    background: linear-gradient(140deg, var(--primary) 0%, var(--deep) 100%);
    position: relative;
    overflow: hidden;
    padding: 80px 0;
    text-align: center;
    color: #fff;
    border-top: 2px solid var(--gold);
  }

  .cta-band::before {
    content: '';
    position: absolute;
    right: -40px;
    top: -40px;
    width: 220px;
    height: 220px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3E%3Cpath d='M15 0L30 15L15 30L0 15Z' fill='none' stroke='%23C6A56E' stroke-width='0.5' opacity='0.15'/%3E%3C/svg%3E");
    background-size: 30px 30px;
    opacity: 0.6;
  }

  .cta-band h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 14px;
  }

  .cta-band p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
    max-width: 560px;
    margin: 0 auto 28px;
  }

  @media (max-width: 767.98px) {
    .cta-band {
      padding: 60px 0;
    }

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

    .cta-band .btn {
      width: 100%;
      max-width: 300px;
    }
  }

  /* ========== FOOTER ========== */
  footer {
    background: var(--deep);
    color: rgba(255, 255, 255, 0.72);
    border-top: 2px solid var(--gold);
    padding: 64px 0 28px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 44px;
  }

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
  }

  .footer-logo .logo-text {
    color: #fff;
  }

  .footer-brand-desc {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.62);
    margin-bottom: 12px;
    max-width: 280px;
  }

  .footer-domain {
    display: inline-block;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 6px;
    padding: 4px 10px;
  }

  .footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 12px;
  }

  .footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 24px;
    height: 2px;
    background: var(--gold);
    border-radius: 2px;
  }

  .footer-col ul li {
    margin-bottom: 12px;
  }

  .footer-col ul a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.66);
    transition: color .2s ease, padding-left .2s ease;
  }

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

  .footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.66);
    line-height: 1.6;
  }

  .footer-contact-list i {
    color: var(--gold);
    margin-top: 5px;
    width: 16px;
    text-align: center;
    flex-shrink: 0;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: 22px;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
  }

  .footer-bottom a {
    color: rgba(255, 255, 255, 0.55);
  }

  .footer-bottom a:hover {
    color: var(--gold-light);
  }

  @media (min-width: 768px) {
    .footer-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .footer-grid {
      grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
      gap: 48px;
    }
  }

  /* ========== MISCELLANEOUS ========== */
  .section-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0;
  }

  @media (max-width: 639.98px) {
    .hero-actions .btn {
      padding: 0 20px;
      font-size: 14px;
    }

    .case-info h3 {
      font-size: 18px;
    }

    .footer-col {
      padding-bottom: 8px;
    }
  }

/* roulang page: article */
:root {
  --primary: #0A5C4E;
  --primary-dark: #07463C;
  --accent: #C6A56E;
  --accent-dark: #B08F5A;
  --deep: #0A2A24;
  --bg-cream: #F6F5F1;
  --white: #FFFFFF;
  --text: #2B2B28;
  --text-light: #6E6C66;
  --border: #E8E3D9;
  --radius-card: 14px;
  --radius-img: 10px;
  --radius-btn: 8px;
  --shadow-sm: 0 2px 12px rgba(10, 42, 36, 0.06);
  --shadow-hover: 0 8px 24px rgba(10, 42, 36, 0.10);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background: var(--bg-cream);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
ul, ol {
  list-style: none;
}
button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}
@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(247, 246, 242, 0.96);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s, background .3s;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.site-header.header-scrolled {
  background: rgba(247, 246, 242, 0.96);
  border-bottom-color: rgba(198, 165, 110, 0.30);
  box-shadow: 0 4px 24px rgba(10, 42, 36, 0.07);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--deep));
  color: #fff;
  font-size: 18px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(10, 92, 78, 0.20);
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--deep);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 32px;
}
.main-nav a {
  position: relative;
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 0;
  transition: color .25s;
}
.main-nav a:hover {
  color: var(--primary);
}
.main-nav a.active {
  color: var(--primary);
  font-weight: 600;
}
.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}
.main-nav a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff !important;
  border-radius: var(--radius-btn);
  padding: 10px 22px !important;
  font-weight: 600;
  transition: background .25s, transform .25s, box-shadow .25s;
}
.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(10, 92, 78, 0.25);
  color: #fff !important;
}
.nav-cta:active {
  transform: translateY(0);
}
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--deep);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-btn);
  align-items: center;
  justify-content: center;
  transition: background .25s, color .25s;
}
.mobile-toggle:hover {
  background: var(--border);
}
.mobile-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 16px 20px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 16px 32px rgba(10, 42, 36, 0.10);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease;
  }
  .main-nav.nav-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .main-nav a {
    display: block;
    padding: 12px 14px;
    border-radius: var(--radius-btn);
    font-size: 16px;
  }
  .main-nav a:hover {
    background: var(--bg-cream);
  }
  .main-nav a.active::after {
    display: none;
  }
  .main-nav a.active {
    background: rgba(10, 92, 78, 0.08);
  }
  .nav-cta {
    margin-top: 8px;
    justify-content: center;
    padding: 12px 22px !important;
  }
}

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  background-color: var(--deep);
  padding: 148px 0 72px;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(10, 42, 36, 0.74) 0%, rgba(10, 42, 36, 0.44) 60%, rgba(10, 92, 78, 0.28) 100%);
}
.article-hero-content {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
  letter-spacing: 0.03em;
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  transition: color .25s;
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb-sep {
  opacity: 0.45;
}
.breadcrumb-current {
  color: #fff;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 320px;
}
.article-hero h1 {
  color: #fff;
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  margin: 18px 0 14px;
  max-width: 820px;
  letter-spacing: 0.01em;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.meta-item i {
  color: var(--accent);
  font-size: 14px;
}
@media (max-width: 768px) {
  .article-hero {
    padding: 112px 0 52px;
  }
  .article-hero h1 {
    font-size: 28px;
  }
  .article-meta {
    gap: 12px;
    font-size: 12px;
  }
}

/* ===== Article Body ===== */
.article-body-section {
  background: #fff;
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--border);
}
.article-container-narrow {
  max-width: 760px;
  margin: 0 auto;
}
.article-content {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
}
.article-content > * {
  margin-bottom: 20px;
}
.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--deep);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 44px;
  margin-bottom: 14px;
}
.article-content h2 {
  font-size: 26px;
}
.article-content h3 {
  font-size: 21px;
  font-weight: 600;
}
.article-content h4 {
  font-size: 18px;
  font-weight: 600;
}
.article-content p {
  margin-bottom: 20px;
}
.article-content ul,
.article-content ol {
  padding-left: 24px;
  margin-bottom: 20px;
}
.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
}
.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(10, 92, 78, 0.35);
  transition: text-decoration-color .25s, color .25s;
}
.article-content a:hover {
  color: var(--primary-dark);
  text-decoration-color: var(--primary-dark);
}
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: var(--bg-cream);
  padding: 18px 22px;
  border-radius: 0 10px 10px 0;
  font-style: italic;
  color: var(--text-light);
}
.article-content img {
  border-radius: var(--radius-img);
  max-width: 100%;
  height: auto;
  margin: 28px 0;
  box-shadow: var(--shadow-sm);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 14px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-content table th {
  background: var(--bg-cream);
  font-weight: 600;
  color: var(--deep);
}
.article-content code {
  background: var(--bg-cream);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 14px;
}
.article-content pre {
  background: var(--deep);
  color: #d8e2de;
  border-radius: var(--radius-card);
  padding: 20px 24px;
  overflow-x: auto;
  line-height: 1.6;
  font-size: 14px;
  margin-bottom: 24px;
}
.article-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
}

/* Not Found */
.article-notfound {
  text-align: center;
  padding: 72px 24px;
  background: var(--bg-cream);
  border-radius: var(--radius-card);
}
.notfound-icon {
  font-size: 46px;
  color: var(--accent);
  margin-bottom: 16px;
}
.article-notfound p {
  font-size: 20px;
  font-weight: 600;
  color: var(--deep);
  margin-bottom: 26px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all .25s ease;
  min-height: 44px;
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(10, 92, 78, 0.25);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(10, 92, 78, 0.06);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn-gold {
  background: var(--accent);
  color: var(--deep);
}
.btn-gold:hover {
  background: #D5B684;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(198, 165, 110, 0.32);
}
.btn-gold:active {
  transform: translateY(0);
}

/* ===== Related ===== */
.related-section {
  background: var(--bg-cream);
  padding: 64px 0;
}
.section-head {
  margin-bottom: 36px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.section-tag::before {
  content: '';
  width: 18px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--deep);
  margin-top: 10px;
  line-height: 1.3;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.related-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
.related-img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--border);
}
.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}
.related-card:hover .related-img img {
  transform: scale(1.04);
}
.related-body {
  padding: 22px 24px 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.02em;
}
.card-tag::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.related-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--deep);
  margin: 12px 0 10px;
  line-height: 1.4;
}
.related-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
  .section-head h2 {
    font-size: 24px;
  }
}

/* ===== Article Pager ===== */
.article-pager {
  background: #fff;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}
.article-pager-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(160deg, var(--primary) 0%, var(--deep) 100%);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
  border-top: 2px solid var(--accent);
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  opacity: 0.06;
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}
.cta-inner h2 {
  color: #fff;
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.3;
}
.cta-inner p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
@media (max-width: 768px) {
  .cta-inner h2 {
    font-size: 24px;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--deep);
  color: rgba(255, 255, 255, 0.70);
  padding-top: 60px;
  border-top: 2px solid var(--accent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo .logo-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.96);
  color: var(--primary);
  box-shadow: none;
}
.footer-logo .logo-text {
  font-size: 17px;
  color: #fff;
  font-weight: 700;
  white-space: nowrap;
}
.footer-brand-desc {
  font-size: 14px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.58);
  margin-bottom: 14px;
  max-width: 300px;
}
.footer-domain {
  display: inline-block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 4px 12px;
  border-radius: 20px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.66);
  transition: color .25s, padding-left .25s;
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-col a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}
.footer-contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.6;
}
.footer-contact-list i {
  color: var(--accent);
  margin-top: 4px;
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.42);
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.52);
  transition: color .25s;
}
.footer-bottom a:hover {
  color: var(--accent);
}
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ===== Back to top ===== */
.back-top-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  transition: background .25s, transform .25s, box-shadow .25s;
  box-shadow: var(--shadow-sm);
}
.back-top-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.back-top-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ===== Responsive grid helpers ===== */
@media (max-width: 768px) {
  .article-pager-inner {
    flex-direction: column;
    align-items: stretch;
  }
  .article-pager-inner .btn {
    width: 100%;
  }
}
@media (max-width: 520px) {
  .article-hero h1 {
    font-size: 25px;
  }
}

/* roulang page: category2 */
:root {
            --color-primary: #0A5C4E;
            --color-gold: #C6A56E;
            --color-dark: #0A2A24;
            --color-cream: #F6F5F1;
            --color-white: #FFFFFF;
            --color-text: #1F2937;
            --color-text-light: #6B7280;
            --color-border: #E8E3D9;
            --radius-card: 14px;
            --radius-img: 10px;
            --radius-btn: 8px;
            --shadow-default: 0 2px 12px rgba(10, 42, 36, 0.06);
            --shadow-hover: 0 8px 24px rgba(10, 42, 36, 0.10);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 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: 15px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-cream);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-gold);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background-color: rgba(246, 245, 241, 0.96);
            border-bottom: 1px solid var(--color-border);
            transition: background-color 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background-color: rgba(247, 246, 242, 0.96);
            box-shadow: 0 2px 20px rgba(10, 42, 36, 0.08);
            border-bottom-color: rgba(198, 165, 110, 0.4);
        }

        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
        }

        @media (max-width: 768px) {
            .header-container {
                height: 64px;
            }
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            line-height: 1.3;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: var(--color-white) !important;
            border-radius: 8px;
            font-size: 16px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-dark);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            position: relative;
            padding-bottom: 4px;
            white-space: nowrap;
            transition: color 0.25s ease;
        }

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

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

        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: -2px;
            width: 5px;
            height: 5px;
            background: var(--color-gold);
            border-radius: 50%;
        }

        .main-nav .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: var(--color-white) !important;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            border: 1.5px solid var(--color-primary);
            transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
        }

        .main-nav .nav-cta:hover {
            background: #07463C;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(10, 92, 78, 0.20);
        }
        .main-nav .nav-cta::after {
            display: none;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: none;
            background: transparent;
            font-size: 22px;
            color: var(--color-dark);
            border-radius: var(--radius-btn);
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .menu-toggle:hover {
            background: rgba(10, 92, 78, 0.08);
        }

        @media (max-width: 1024px) {
            .main-nav ul {
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--color-cream);
                border-bottom: 1px solid var(--color-border);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
                z-index: 99;
                box-shadow: 0 20px 30px rgba(10, 42, 36, 0.10);
                max-height: calc(100vh - 64px);
                overflow-y: auto;
            }

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

            .main-nav ul {
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 16px 24px 24px;
            }

            .main-nav li {
                border-bottom: 1px solid rgba(232, 227, 217, 0.6);
            }
            .main-nav li:last-child {
                border-bottom: none;
            }

            .main-nav a {
                display: block;
                padding: 14px 0;
                font-size: 16px;
            }

            .main-nav a.active::after {
                left: 0;
                transform: none;
                bottom: 8px;
                width: 20px;
                height: 3px;
                border-radius: 2px;
            }

            .main-nav .nav-cta {
                margin-top: 12px;
                justify-content: center;
                border: none;
            }
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 160px 0 80px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-color: var(--color-dark);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(10, 42, 36, 0.88) 0%, rgba(10, 92, 78, 0.72) 60%, rgba(10, 42, 36, 0.55) 100%);
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .page-hero .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(198, 165, 110, 0.16);
            border: 1px solid rgba(198, 165, 110, 0.35);
            color: #E3CD9E;
            border-radius: 30px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 24px;
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--color-white);
            letter-spacing: 0.02em;
            margin-bottom: 20px;
        }

        .page-hero .hero-lead {
            font-size: 16px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.88);
            max-width: 720px;
            margin-bottom: 28px;
        }

        .page-hero .hero-dots {
            position: absolute;
            right: 60px;
            bottom: 40px;
            width: 120px;
            height: 120px;
            opacity: 0.12;
            background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M10 0H0V10H10V0Z' fill='%23C6A56E'/%3E%3Cpath d='M30 0H20V10H30V0Z' fill='%23C6A56E'/%3E%3Cpath d='M10 20H0V30H10V20Z' fill='%23C6A56E'/%3E%3Cpath d='M30 20H20V30H30V20Z' fill='%23C6A56E'/%3E%3C/svg%3E");
            background-repeat: repeat;
            z-index: 1;
        }

        @media (max-width: 640px) {
            .page-hero {
                padding: 120px 0 56px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero .hero-lead {
                font-size: 15px;
            }
        }

        /* ===== Section Spacing ===== */
        .section {
            padding: 64px 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 0.06em;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--color-gold);
            border-radius: 2px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-dark);
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-light);
            line-height: 1.75;
            max-width: 720px;
            margin-bottom: 32px;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 22px;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            height: 48px;
            padding: 0 32px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
            box-shadow: 0 4px 14px rgba(10, 92, 78, 0.22);
        }

        .btn-primary:hover {
            background: #07463C;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(10, 92, 78, 0.28);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-white);
            border: 1.5px solid rgba(255, 255, 255, 0.7);
        }

        .btn-outline:hover {
            background: rgba(198, 165, 110, 0.15);
            border-color: var(--color-gold);
            color: var(--color-gold);
        }

        .btn-gold {
            background: var(--color-gold);
            color: var(--color-dark);
            box-shadow: 0 4px 16px rgba(198, 165, 110, 0.35);
        }

        .btn-gold:hover {
            background: #D4B583;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(198, 165, 110, 0.40);
            color: var(--color-dark);
        }

        .btn-outline-dark {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
        }

        .btn-outline-dark:hover {
            background: rgba(10, 92, 78, 0.06);
        }

        @media (max-width: 640px) {
            .btn {
                height: 44px;
                padding: 0 24px;
                font-size: 14px;
            }
        }

        /* ===== Cards ===== */
        .card {
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            overflow: hidden;
        }

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

        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-img) var(--radius-img) 0 0;
            transition: transform 0.25s ease;
        }

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

        .card-body {
            padding: 24px;
        }

        .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 0.04em;
        }

        .card-tag::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--color-gold);
            border-radius: 50%;
            display: inline-block;
        }

        .card-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-dark);
            margin: 8px 0 8px;
        }

        .card-text {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            font-size: 12px;
            color: #9CA3AF;
        }

        /* ===== Feature Block (non-symmetric) ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 8fr 4fr;
            gap: 48px;
            align-items: center;
        }

        .feature-block.reverse {
            grid-template-columns: 5fr 7fr;
        }

        .feature-block .feature-media {
            position: relative;
        }

        .feature-block .feature-media::before {
            content: '';
            position: absolute;
            top: -14px;
            left: -14px;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(198, 165, 110, 0.20);
            z-index: 0;
        }

        .feature-block .feature-media img {
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            width: 100%;
            height: 380px;
            object-fit: cover;
            position: relative;
            z-index: 1;
        }

        .feature-block .feature-content {
            padding: 20px 0;
        }

        .feature-block .feature-content .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 0.05em;
            margin-bottom: 12px;
        }

        .feature-block .feature-content h3 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-dark);
            margin-bottom: 16px;
        }

        .feature-block .feature-content p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-light);
            margin-bottom: 20px;
        }

        .feature-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .feature-list li {
            position: relative;
            padding-left: 22px;
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.6;
        }

        .feature-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 8px;
            height: 8px;
            background: var(--color-primary);
            border-radius: 50%;
            opacity: 0.7;
        }

        @media (max-width: 1024px) {
            .feature-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feature-block.reverse {
                grid-template-columns: 1fr;
            }
            .feature-block .feature-media img {
                height: 280px;
            }
        }

        /* ===== Capability Cards ===== */
        .capability-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .capability-card {
            background: var(--color-white);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-default);
            border-top: 3px solid var(--color-gold);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            position: relative;
        }

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

        .capability-card .icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(10, 92, 78, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-primary);
            margin-bottom: 16px;
        }

        .capability-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-dark);
            margin-bottom: 8px;
        }

        .capability-card p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.65;
        }

        .capability-wide {
            grid-column: span 2;
            display: flex;
            align-items: center;
            gap: 40px;
            padding: 28px 32px;
            border-top: 3px solid var(--color-primary);
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
        }

        .capability-wide .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: var(--color-primary);
            color: var(--color-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            flex-shrink: 0;
        }

        .capability-wide .wide-content {
            flex: 1;
        }

        .capability-wide h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-dark);
            margin-bottom: 4px;
        }

        .capability-wide p {
            font-size: 14px;
            color: var(--color-text-light);
        }

        @media (max-width: 768px) {
            .capability-grid {
                grid-template-columns: 1fr;
            }
            .capability-wide {
                grid-column: span 1;
                flex-direction: column;
                gap: 16px;
                align-items: flex-start;
            }
        }

        /* ===== Case Cards ===== */
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .case-card {
            display: grid;
            grid-template-columns: 4fr 6fr;
            background: var(--color-white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

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

        .case-card img {
            width: 100%;
            height: 100%;
            min-height: 180px;
            object-fit: cover;
        }

        .case-card .case-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
        }

        .case-card .case-body .card-tag {
            margin-bottom: 6px;
        }

        .case-card .case-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .case-card .case-body p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.65;
            flex: 1;
        }

        .case-card .case-body .case-link {
            margin-top: 12px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
        }

        @media (max-width: 768px) {
            .case-grid {
                grid-template-columns: 1fr;
            }
            .case-card {
                grid-template-columns: 1fr;
            }
            .case-card img {
                height: 180px;
            }
        }

        /* ===== Process Timeline ===== */
        .process-section {
            background: var(--color-dark);
            border-radius: var(--radius-card);
            padding: 48px;
            color: var(--color-white);
            position: relative;
            overflow: hidden;
        }

        .process-section::after {
            content: '';
            position: absolute;
            right: -30px;
            bottom: -30px;
            width: 140px;
            height: 140px;
            opacity: 0.08;
            background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M10 0H0V10H10V0Z' fill='%23C6A56E'/%3E%3Cpath d='M30 0H20V10H30V0Z' fill='%23C6A56E'/%3E%3Cpath d='M10 20H0V30H10V20Z' fill='%23C6A56E'/%3E%3Cpath d='M30 20H20V30H30V20Z' fill='%23C6A56E'/%3E%3C/svg%3E");
            background-repeat: repeat;
        }

        .process-section .section-label::before {
            background: var(--color-gold);
        }

        .process-section .section-title {
            color: var(--color-white);
        }

        .process-section .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

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

        .process-step {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            padding: 28px 24px;
            position: relative;
        }

        .process-step .step-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-gold);
            letter-spacing: 0.08em;
            margin-bottom: 8px;
        }

        .process-step h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
            .process-section {
                padding: 32px 20px;
            }
        }

        /* ===== Related Links ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-white);
            border-radius: 12px;
            padding: 20px 24px;
            box-shadow: var(--shadow-default);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            border-left: 3px solid var(--color-gold);
        }

        .related-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .related-item .related-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(10, 92, 78, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 16px;
            flex-shrink: 0;
        }

        .related-item .related-info {
            flex: 1;
        }

        .related-item .related-info h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-dark);
            margin-bottom: 2px;
        }

        .related-item .related-info span {
            font-size: 12px;
            color: var(--color-text-light);
        }

        .related-item .related-arrow {
            color: var(--color-text-light);
            font-size: 14px;
            transition: transform 0.25s ease, color 0.25s ease;
        }

        .related-item:hover .related-arrow {
            transform: translateX(4px);
            color: var(--color-primary);
        }

        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            display: grid;
            grid-template-columns: 4fr 8fr;
            gap: 48px;
            align-items: start;
        }

        .faq-intro {
            position: sticky;
            top: 100px;
        }

        .faq-intro .section-title {
            margin-bottom: 16px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--color-white);
            border-radius: 12px;
            box-shadow: var(--shadow-default);
            overflow: hidden;
            transition: box-shadow 0.25s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }

        .faq-item.open {
            box-shadow: var(--shadow-hover);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: transparent;
            border: none;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-dark);
            cursor: pointer;
            text-align: left;
            transition: background 0.25s ease, color 0.25s ease;
            font-family: var(--font-sans);
        }

        .faq-question:hover {
            background: var(--color-cream);
            color: var(--color-primary);
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1.5px solid var(--color-border);
            color: var(--color-primary);
            font-size: 14px;
            transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: var(--color-white);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-light);
            background: #FAFAF7;
            border-top: 1px solid transparent;
        }

        .faq-item.open .faq-answer {
            padding: 18px 24px;
            max-height: 400px;
            border-top-color: var(--color-border);
        }

        @media (max-width: 1024px) {
            .faq-wrap {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .faq-intro {
                position: static;
            }
        }

        /* ===== CTA ===== */
        .cta-band {
            background: linear-gradient(135deg, #0A5C4E 0%, #0A2A24 100%);
            border-radius: 24px;
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            border-top: 2px solid var(--color-gold);
        }

        .cta-band::before {
            content: '';
            position: absolute;
            top: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            opacity: 0.08;
            background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M10 0H0V10H10V0Z' fill='%23C6A56E'/%3E%3Cpath d='M30 0H20V10H30V0Z' fill='%23C6A56E'/%3E%3Cpath d='M10 20H0V30H10V20Z' fill='%23C6A56E'/%3E%3Cpath d='M30 20H20V30H30V20Z' fill='%23C6A56E'/%3E%3C/svg%3E");
            background-repeat: repeat;
        }

        .cta-band h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }

        .cta-band p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 620px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 2;
            line-height: 1.7;
        }

        .cta-band .btn-wrap {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        @media (max-width: 640px) {
            .cta-band {
                padding: 40px 20px;
            }
            .cta-band h2 {
                font-size: 22px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-dark);
            margin-top: 64px;
            border-top: 2px solid var(--color-gold);
            color: rgba(255, 255, 255, 0.75);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 4fr 2fr 3fr 2fr;
            gap: 48px;
            padding: 56px 0 40px;
        }

        .site-footer .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .site-footer .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
        }

        .site-footer .footer-logo .logo-text {
            color: var(--color-white);
            font-size: 16px;
            font-weight: 700;
        }

        .site-footer .footer-brand-desc {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
            margin-bottom: 12px;
        }

        .site-footer .footer-domain {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.04em;
        }

        .site-footer h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .site-footer ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .site-footer ul a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.25s ease;
        }

        .site-footer ul a:hover {
            color: var(--color-gold);
        }

        .site-footer .footer-contact-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.6;
        }

        .site-footer .footer-contact-list i {
            color: var(--color-gold);
            margin-top: 3px;
            width: 14px;
            flex-shrink: 0;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.6;
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        .site-footer .footer-bottom a:hover {
            color: var(--color-gold);
        }

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

        @media (max-width: 640px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 40px 0 32px;
            }
        }

        /* ===== Divider ===== */
        .section-divider {
            border: none;
            border-top: 1px solid var(--color-border);
            max-width: 1200px;
            margin: 0 auto;
        }

        /* ===== Misc ===== */
        .text-gold {
            color: var(--color-gold);
        }
        .text-brand {
            color: var(--color-primary);
        }
        .bg-brand {
            background-color: var(--color-primary);
        }
        .bg-cream {
            background-color: var(--color-cream);
        }
        .bg-dark {
            background-color: var(--color-dark);
        }

/* roulang page: category3 */
:root {
      --primary: #0A5C4E;
      --primary-dark: #07463C;
      --gold: #C6A56E;
      --gold-light: #D9BC8A;
      --deep: #0A2A24;
      --bg: #F6F5F1;
      --card: #FFFFFF;
      --text: #1F2B26;
      --text-weak: #5C6B66;
      --line: #E8E3D9;
      --radius-lg: 14px;
      --radius-md: 10px;
      --radius-btn: 8px;
      --shadow: 0 2px 12px rgba(10, 42, 36, 0.06);
      --shadow-hover: 0 8px 24px rgba(10, 42, 36, 0.10);
      --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font);
      background: var(--bg);
      color: var(--text);
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      color: inherit;
      text-decoration: none;
    }

    ul {
      list-style: none;
    }

    button {
      font-family: inherit;
      border: none;
      background: none;
      cursor: pointer;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    @media (min-width: 1024px) {
      .container {
        padding-left: 40px;
        padding-right: 40px;
      }
    }

    /* Header */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      background: transparent;
      transition: background 0.3s ease, box-shadow 0.3s ease;
    }

    .site-header.scrolled {
      background: rgba(247, 246, 242, 0.96);
      box-shadow: 0 1px 0 var(--line);
    }

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

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .logo-icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      flex-shrink: 0;
    }

    .logo-text {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    @media (max-width: 520px) {
      .logo-text {
        font-size: 17px;
      }
    }

    .main-nav ul {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .main-nav a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      padding: 8px 2px;
      position: relative;
      transition: color 0.2s ease;
    }

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

    .main-nav a.active {
      color: var(--primary);
      font-weight: 700;
    }

    .main-nav a.active::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 3px;
      border-radius: 2px;
      background: var(--gold);
    }

    .main-nav a.nav-cta {
      background: var(--primary);
      color: #fff;
      padding: 10px 20px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    }

    .main-nav a.nav-cta:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(10, 92, 78, 0.22);
    }

    .main-nav a.nav-cta::after {
      display: none;
    }

    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      color: var(--primary);
      border-radius: 8px;
      transition: background 0.2s ease;
    }

    .nav-toggle:hover {
      background: rgba(10, 92, 78, 0.08);
    }

    @media (max-width: 767px) {
      .site-header {
        background: rgba(247, 246, 242, 0.96) !important;
        box-shadow: 0 1px 0 var(--line) !important;
      }

      .nav-toggle {
        display: flex;
      }

      .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--line);
        padding: 20px;
        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.25s ease, transform 0.25s ease;
        box-shadow: 0 16px 24px rgba(10, 42, 36, 0.08);
      }

      .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
      }

      .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
      }

      .main-nav a {
        display: block;
        padding: 12px 14px;
        font-size: 16px;
        border-radius: 8px;
      }

      .main-nav a:hover {
        background: rgba(10, 92, 78, 0.06);
      }

      .main-nav a.active {
        background: rgba(10, 92, 78, 0.08);
      }

      .main-nav a.active::after {
        display: none;
      }

      .main-nav a.nav-cta {
        text-align: center;
        margin-top: 8px;
      }
    }

    @media (min-width: 768px) and (max-width: 1024px) {
      .main-nav ul {
        gap: 18px;
      }

      .main-nav a {
        font-size: 14px;
      }
    }

    /* Hero */
    .hero-section {
      position: relative;
      min-height: 520px;
      display: flex;
      align-items: flex-end;
      background-image: linear-gradient(160deg, rgba(10, 42, 36, 0.72) 0%, rgba(10, 42, 36, 0.42) 100%), url("/assets/images/backpic/back-1.png");
      background-size: cover;
      background-position: center;
      padding: 150px 0 80px;
      color: #fff;
    }

    .hero-content {
      max-width: 720px;
    }

    .hero-content h1 {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 20px;
      letter-spacing: 0.02em;
      color: #fff;
    }

    @media (min-width: 768px) {
      .hero-content h1 {
        font-size: 44px;
      }
    }

    .hero-content .lead {
      font-size: 16px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.9);
      max-width: 640px;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 46px;
      padding: 0 28px;
      background: var(--primary);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-btn);
      transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 10px 22px rgba(10, 92, 78, 0.25);
    }

    .btn-primary:focus-visible {
      outline: 2px solid var(--gold);
      outline-offset: 3px;
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 46px;
      padding: 0 28px;
      background: transparent;
      border: 1.5px solid var(--gold);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-btn);
      transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
    }

    .btn-outline:hover {
      background: rgba(198, 165, 110, 0.14);
      transform: translateY(-2px);
      border-color: var(--gold-light);
    }

    .btn-outline:focus-visible {
      outline: 2px solid var(--gold);
      outline-offset: 3px;
    }

    /* Section common */
    .section {
      padding: 64px 0;
    }

    .section-alt {
      background: var(--card);
    }

    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.08em;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 14px;
    }

    .section-label::before {
      content: "";
      width: 20px;
      height: 2px;
      background: var(--gold);
      border-radius: 2px;
    }

    .section-title {
      font-size: 22px;
      font-weight: 700;
      line-height: 1.3;
      color: var(--text);
      margin-bottom: 18px;
    }

    @media (min-width: 768px) {
      .section-title {
        font-size: 30px;
      }
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-weak);
      max-width: 640px;
      margin-bottom: 40px;
    }

    /* Stats */
    .stats-band {
      padding: 36px 0;
      margin-top: 0;
      background: var(--card);
      border-bottom: 1px solid var(--line);
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px 20px;
    }

    @media (min-width: 768px) {
      .stats-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 40px;
      }
    }

    .stat-item {
      text-align: center;
      padding: 20px 12px;
    }

    .stat-number {
      font-size: 32px;
      font-weight: 800;
      color: var(--gold);
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .stat-number::after {
      content: "";
      display: block;
      width: 28px;
      height: 2px;
      background: var(--primary);
      margin: 12px auto 0;
      border-radius: 2px;
    }

    .stat-label {
      font-size: 13px;
      color: var(--text-weak);
      letter-spacing: 0.05em;
    }

    /* Split layout */
    .split-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 40px;
      align-items: center;
    }

    @media (min-width: 1024px) {
      .split-grid {
        grid-template-columns: 7fr 5fr;
        gap: 60px;
      }

      .split-grid.reversed {
        grid-template-columns: 5fr 7fr;
      }

      .split-grid.reversed .split-media {
        order: 1;
      }

      .split-grid.reversed .split-copy {
        order: 2;
      }
    }

    .split-media {
      position: relative;
    }

    .split-media::before {
      content: "";
      position: absolute;
      top: -16px;
      right: -16px;
      width: 100px;
      height: 100px;
      border: 8px solid rgba(198, 165, 110, 0.18);
      border-radius: 50%;
      z-index: 0;
    }

    .split-media img {
      position: relative;
      z-index: 1;
      width: 100%;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      object-fit: cover;
      aspect-ratio: 4/3;
    }

    .split-copy {
      padding: 10px 0;
    }

    .split-copy h3 {
      font-size: 19px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 16px;
    }

    .split-copy p {
      color: var(--text-weak);
      margin-bottom: 18px;
    }

    .split-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .split-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 15px;
      color: var(--text);
    }

    .split-list li::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
      margin-top: 7px;
      flex-shrink: 0;
    }

    /* Scenarios cards */
    .scenario-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 24px;
    }

    @media (min-width: 640px) {
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (min-width: 1024px) {
      .scenario-grid {
        grid-template-columns: 1.2fr 0.8fr 0.8fr;
      }
    }

    .scenario-card {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow);
      transition: box-shadow 0.25s ease, transform 0.25s ease;
    }

    .scenario-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    .scenario-card .icon-wrap {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      margin-bottom: 18px;
    }

    .scenario-card h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .scenario-card p {
      color: var(--text-weak);
      font-size: 14px;
      margin-bottom: 16px;
    }

    .scenario-card ul {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .scenario-card ul li {
      font-size: 14px;
      color: var(--text);
      padding-left: 16px;
      position: relative;
    }

    .scenario-card ul li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 9px;
      width: 6px;
      height: 6px;
      background: var(--gold);
      border-radius: 50%;
    }

    /* Process steps */
    .process-wrap {
      padding: 64px 0;
      background: var(--deep);
      color: #fff;
    }

    .process-wrap .section-title {
      color: #fff;
    }

    .process-wrap .section-desc {
      color: rgba(255, 255, 255, 0.72);
    }

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

    @media (min-width: 640px) {
      .process-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    @media (min-width: 1024px) {
      .process-grid {
        grid-template-columns: repeat(5, 1fr);
      }
    }

    .process-step {
      position: relative;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-lg);
      padding: 24px 20px;
      transition: background 0.25s ease, transform 0.25s ease;
    }

    .process-step:hover {
      background: rgba(255, 255, 255, 0.08);
      transform: translateY(-3px);
    }

    .process-step .step-num {
      font-size: 13px;
      font-weight: 700;
      color: var(--gold);
      letter-spacing: 0.1em;
      margin-bottom: 12px;
      display: block;
    }

    .process-step h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: #fff;
    }

    .process-step p {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.6);
      margin: 0;
    }

    /* Case cards */
    .case-list {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .case-card {
      display: grid;
      grid-template-columns: 1fr;
      gap: 0;
      background: var(--card);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow);
      border: 1px solid var(--line);
      transition: box-shadow 0.25s ease, transform 0.25s ease;
    }

    .case-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    @media (min-width: 768px) {
      .case-card {
        grid-template-columns: 5fr 7fr;
      }
    }

    .case-media img {
      width: 100%;
      height: 100%;
      min-height: 220px;
      object-fit: cover;
      border-radius: 0;
    }

    .case-body {
      padding: 28px;
    }

    .case-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 14px;
    }

    .case-tag i {
      color: var(--gold);
    }

    .case-body h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .case-body p {
      color: var(--text-weak);
      font-size: 14px;
      margin-bottom: 16px;
    }

    .case-body .case-metrics {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      border-top: 1px solid var(--line);
      padding-top: 16px;
    }

    .case-metrics span {
      font-size: 13px;
      color: var(--text);
    }

    .case-metrics span strong {
      color: var(--primary);
      font-weight: 700;
      margin-right: 4px;
    }

    /* Related categories */
    .related-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 16px;
    }

    @media (min-width: 768px) {
      .related-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    .related-link {
      display: flex;
      align-items: center;
      gap: 14px;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 18px 20px;
      box-shadow: var(--shadow);
      transition: box-shadow 0.25s ease, transform 0.25s ease;
    }

    .related-link:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }

    .related-link .icon-wrap {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      flex-shrink: 0;
    }

    .related-link h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 2px;
    }

    .related-link p {
      font-size: 13px;
      color: var(--text-weak);
      margin: 0;
    }

    /* FAQ */
    .faq-section {
      background: var(--card);
      padding: 64px 0;
      border-top: 1px solid var(--line);
    }

    .faq-layout {
      display: grid;
      grid-template-columns: 1fr;
      gap: 40px;
    }

    @media (min-width: 1024px) {
      .faq-layout {
        grid-template-columns: 4fr 8fr;
        gap: 64px;
      }
    }

    .faq-left h2 {
      font-size: 22px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 14px;
    }

    @media (min-width: 768px) {
      .faq-left h2 {
        font-size: 30px;
      }
    }

    .faq-left p {
      color: var(--text-weak);
      margin-bottom: 24px;
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--card);
      overflow: hidden;
      transition: box-shadow 0.2s ease;
    }

    .faq-item.open {
      box-shadow: var(--shadow);
    }

    .faq-q {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 22px;
      text-align: left;
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      transition: background 0.2s ease, color 0.2s ease;
    }

    .faq-q:hover {
      color: var(--primary);
    }

    .faq-q:focus-visible {
      outline: 2px solid var(--gold);
      outline-offset: -2px;
    }

    .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(10, 92, 78, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      flex-shrink: 0;
      transition: transform 0.3s ease, background 0.3s ease;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }

    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 22px;
    }

    .faq-item.open .faq-a {
      max-height: 320px;
      padding: 0 22px 20px;
    }

    .faq-a p {
      background: #FAFAF7;
      border-radius: 10px;
      padding: 16px 18px;
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-weak);
      margin: 0;
    }

    /* CTA band */
    .cta-band {
      background: linear-gradient(135deg, var(--primary) 0%, var(--deep) 100%);
      padding: 56px 0;
      border-top: 2px solid var(--gold);
      text-align: center;
      color: #fff;
    }

    .cta-band h2 {
      font-size: 24px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 12px;
    }

    @media (min-width: 768px) {
      .cta-band h2 {
        font-size: 30px;
      }
    }

    .cta-band p {
      color: rgba(255, 255, 255, 0.82);
      max-width: 560px;
      margin: 0 auto 28px;
      font-size: 15px;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 14px;
    }

    .btn-gold {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      height: 46px;
      padding: 0 28px;
      background: var(--gold);
      color: var(--deep);
      font-size: 15px;
      font-weight: 700;
      border-radius: var(--radius-btn);
      transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-gold:hover {
      background: var(--gold-light);
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.22);
    }

    .btn-gold:focus-visible {
      outline: 2px solid #fff;
      outline-offset: 3px;
    }

    .btn-ghost-light {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      height: 46px;
      padding: 0 28px;
      background: transparent;
      border: 1.5px solid rgba(255, 255, 255, 0.7);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-btn);
      transition: background 0.2s ease, transform 0.2s ease;
    }

    .btn-ghost-light:hover {
      background: rgba(255, 255, 255, 0.1);
      transform: translateY(-2px);
    }

    .btn-ghost-light:focus-visible {
      outline: 2px solid #fff;
      outline-offset: 3px;
    }

    /* Footer */
    .site-footer {
      background: var(--deep);
      color: rgba(255, 255, 255, 0.7);
      padding: 60px 0 0;
      border-top: 2px solid var(--gold);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 36px;
      padding-bottom: 40px;
    }

    @media (min-width: 768px) {
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (min-width: 1024px) {
      .footer-grid {
        grid-template-columns: 4fr 2fr 3fr 2fr;
        gap: 48px;
      }
    }

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }

    .footer-logo .logo-icon {
      width: 28px;
      height: 28px;
      font-size: 13px;
      border-radius: 8px;
    }

    .footer-logo .logo-text {
      font-size: 18px;
      font-weight: 800;
      color: #fff;
      white-space: nowrap;
    }

    .footer-brand-desc {
      font-size: 14px;
      line-height: 1.7;
      color: rgba(255, 255, 255, 0.6);
      margin-bottom: 14px;
      max-width: 260px;
    }

    .footer-domain {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.4);
      letter-spacing: 0.04em;
      font-family: "SF Mono", monospace;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 18px;
      letter-spacing: 0.04em;
    }

    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col ul li {
      font-size: 14px;
    }

    .footer-col ul a {
      color: rgba(255, 255, 255, 0.65);
      transition: color 0.2s ease, padding-left 0.2s ease;
    }

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

    .footer-contact-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.6);
    }

    .footer-contact-list li i {
      color: var(--gold);
      margin-top: 4px;
      width: 16px;
      text-align: center;
      flex-shrink: 0;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 20px 0;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.45);
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: center;
      align-items: center;
      text-align: center;
    }

    .footer-bottom a {
      color: rgba(255, 255, 255, 0.5);
      transition: color 0.2s ease;
    }

    .footer-bottom a:hover {
      color: var(--gold-light);
    }

    /* Focus visible accessibility */
    a:focus-visible,
    button:focus-visible {
      outline: 2px solid var(--gold);
      outline-offset: 3px;
    }

    /* Utility */
    .text-center {
      text-align: center;
    }

    .mt-0 {
      margin-top: 0;
    }

/* roulang page: category4 */
:root {
    --primary: #0A5C4E;
    --primary-dark: #07463C;
    --accent: #C6A56E;
    --deep: #0A2A24;
    --bg: #F6F5F1;
    --white: #FFFFFF;
    --text: #1F2A27;
    --text-weak: #6B7A75;
    --border: #E8E3D9;
    --radius-card: 14px;
    --radius-img: 10px;
    --radius-btn: 8px;
    --shadow-card: 0 2px 12px rgba(10, 42, 36, 0.06);
    --shadow-hover: 0 8px 24px rgba(10, 42, 36, 0.10);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

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

  ul,
  ol {
    list-style: none;
  }

  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
  }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
  }

  .section-space {
    padding: 72px 0;
  }

  .section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 44px;
  }

  .section-header .eyebrow,
  .split-text .eyebrow {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 0.08em;
    color: var(--primary);
    background: rgba(10, 92, 78, 0.08);
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 14px;
    font-weight: 600;
  }

  .section-header h2 {
    font-size: 30px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--deep);
    margin-bottom: 12px;
  }

  .section-header p {
    color: var(--text-weak);
    font-size: 15px;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 46px;
    padding: 0 30px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    transition: all 0.25s ease;
    white-space: nowrap;
  }

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

  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(10, 92, 78, 0.25);
  }

  .btn-outline {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.7);
  }

  .btn-outline:hover {
    background: rgba(198, 165, 110, 0.18);
    border-color: var(--accent);
    transform: translateY(-2px);
  }

  .btn-accent {
    background: var(--accent);
    color: var(--deep);
  }

  .btn-accent:hover {
    background: #d4b57e;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(198, 165, 110, 0.35);
  }

  .btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
  }

  /* 顶部导航 */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(246, 245, 241, 0.9);
    backdrop-filter: blur(8px);
    transition: box-shadow 0.3s ease, background 0.3s ease;
  }

  .site-header.scrolled {
    background: rgba(247, 246, 242, 0.96);
    box-shadow: 0 1px 0 rgba(198, 165, 110, 0.5);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--accent);
    border-radius: 10px;
    font-size: 16px;
    flex-shrink: 0;
  }

  .logo-text {
    font-size: 19px;
    font-weight: 700;
    color: var(--deep);
    letter-spacing: 0.02em;
  }

  .main-nav ul {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .main-nav a:not(.nav-cta) {
    display: block;
    padding: 8px 12px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    border-radius: 6px;
    position: relative;
    transition: color 0.2s ease;
  }

  .main-nav a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 2px;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.25s ease;
  }

  .main-nav a:not(.nav-cta):hover {
    color: var(--primary);
  }

  .main-nav a:not(.nav-cta):hover::after {
    transform: scaleX(1);
  }

  .main-nav a.active {
    color: var(--primary);
    font-weight: 700;
  }

  .main-nav a.active::after {
    transform: scaleX(1);
  }

  .nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    height: 42px;
    padding: 0 22px;
    margin-left: 10px;
    background: var(--primary);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-btn);
    transition: all 0.25s ease;
  }

  .nav-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(10, 92, 78, 0.3);
  }

  .nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    border-radius: 8px;
  }

  .nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--deep);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

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

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

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

  /* Hero */
  .page-hero {
    position: relative;
    background: linear-gradient(160deg, rgba(10, 42, 36, 0.78) 0%, rgba(10, 92, 78, 0.55) 55%, rgba(10, 42, 36, 0.25) 100%),
      url('/assets/images/backpic/back-3.png') center / cover no-repeat;
    color: #fff;
    padding: 150px 0 84px;
    border-bottom: 1px solid var(--border);
  }

  .page-hero .container {
    position: relative;
    z-index: 2;
  }

  .hero-eyebrow {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--accent);
    background: rgba(198, 165, 110, 0.15);
    border: 1px solid rgba(198, 165, 110, 0.35);
    padding: 5px 14px;
    border-radius: 999px;
    margin-bottom: 18px;
  }

  .page-hero h1 {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: 0.02em;
  }

  .hero-lead {
    font-size: 17px;
    max-width: 660px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 30px;
  }

  .hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
  }

  /* 非对称图文块 */
  .split-row {
    display: flex;
    align-items: center;
    gap: 56px;
  }

  .split-row.reverse {
    flex-direction: row-reverse;
  }

  .split-text {
    flex: 0 0 48%;
  }

  .split-text h2 {
    font-size: 30px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--deep);
    margin-bottom: 16px;
  }

  .split-text p {
    color: var(--text-weak);
    font-size: 15px;
    margin-bottom: 14px;
  }

  .split-image {
    flex: 1;
  }

  .split-image .image-wrap {
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.25s ease;
  }

  .split-image .image-wrap:hover {
    box-shadow: var(--shadow-hover);
  }

  .split-image img {
    width: 100%;
    height: 340px;
    object-fit: cover;
    transition: transform 0.25s ease;
  }

  .split-image .image-wrap:hover img {
    transform: scale(1.03);
  }

  .check-list {
    margin-top: 18px;
  }

  .check-list li {
    position: relative;
    padding-left: 26px;
    margin-bottom: 10px;
    font-size: 15px;
    color: var(--text);
  }

  .check-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(10, 92, 78, 0.14);
    border: 2px solid var(--primary);
  }

  /* 服务方向卡片 */
  .grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .service-card {
    background: var(--white);
    border-radius: var(--radius-card);
    padding: 28px 24px;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(232, 227, 217, 0.7);
    transition: all 0.25s ease;
  }

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

  .service-card .icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(10, 92, 78, 0.09);
    color: var(--primary);
    border-radius: 12px;
    font-size: 20px;
    margin-bottom: 16px;
  }

  .service-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--deep);
    margin-bottom: 8px;
  }

  .service-card p {
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.65;
  }

  /* 案例卡片 */
  .grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .case-card {
    background: var(--white);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(232, 227, 217, 0.7);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
  }

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

  .case-card .case-img {
    overflow: hidden;
  }

  .case-card .case-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
  }

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

  .case-body {
    padding: 22px;
  }

  .case-body .case-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--primary);
    font-weight: 600;
    letter-spacing: 0.03em;
    margin-bottom: 8px;
  }

  .case-body .case-tag::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
  }

  .case-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--deep);
    margin-bottom: 8px;
  }

  .case-body p {
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.65;
  }

  /* 合作流程 */
  .process-steps {
    background: var(--white);
  }

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

  .step-item {
    position: relative;
    padding: 28px 22px;
    background: var(--bg);
    border-radius: var(--radius-card);
    border: 1px solid var(--border);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
  }

  .step-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
  }

  .step-number {
    font-size: 32px;
    font-weight: 800;
    color: rgba(10, 92, 78, 0.18);
    line-height: 1;
    margin-bottom: 14px;
    letter-spacing: 0.02em;
  }

  .step-item h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--deep);
    margin-bottom: 8px;
  }

  .step-item p {
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.6;
  }

  /* FAQ */
  .faq-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.6fr;
    gap: 48px;
    align-items: start;
  }

  .faq-side h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--deep);
    line-height: 1.3;
    margin-bottom: 12px;
  }

  .faq-side p {
    color: var(--text-weak);
    font-size: 15px;
    margin-bottom: 20px;
  }

  .faq-list {
    Display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .faq-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: box-shadow 0.25s ease;
  }

  .faq-item.active {
    box-shadow: var(--shadow-card);
  }

  .faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--deep);
    text-align: left;
    transition: color 0.2s ease;
  }

  .faq-question:hover {
    color: var(--primary);
  }

  .faq-icon {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(10, 92, 78, 0.08);
    color: var(--primary);
    font-size: 16px;
    transition: transform 0.3s ease, background 0.3s ease;
    flex-shrink: 0;
  }

  .faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: var(--primary);
    color: #fff;
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }

  .faq-answer-inner {
    padding: 0 24px 20px;
    background: #FAFAF7;
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.7;
    border-top: 1px solid var(--border);
    padding-top: 16px;
  }

  /* 其他分类互链 */
  .related-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .related-card {
    background: var(--white);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(232, 227, 217, 0.7);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
  }

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

  .related-card .related-img {
    overflow: hidden;
  }

  .related-card .related-img img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    transition: transform 0.3s ease;
  }

  .related-card:hover .related-img img {
    transform: scale(1.05);
  }

  .related-body {
    padding: 22px;
  }

  .related-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--deep);
    margin-bottom: 8px;
  }

  .related-body p {
    font-size: 14px;
    color: var(--text-weak);
    margin-bottom: 12px;
    line-height: 1.65;
  }

  .related-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s ease;
  }

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

  /* CTA */
  .cta-band {
    background: linear-gradient(135deg, var(--primary) 0%, var(--deep) 100%);
    border-top: 2px solid var(--accent);
    padding: 64px 0;
    text-align: center;
  }

  .cta-band h2 {
    color: #fff;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
  }

  .cta-band p {
    color: rgba(255, 255, 255, 0.82);
    font-size: 15px;
    margin-bottom: 24px;
  }

  .cta-band .btn {
    min-width: 160px;
  }

  /* 页脚 */
  footer {
    background: var(--deep);
    color: rgba(255, 255, 255, 0.78);
    border-top: 2px solid var(--accent);
    padding: 60px 0 0;
  }

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

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
  }

  .footer-logo .logo-icon {
    background: rgba(198, 165, 110, 0.15);
    color: var(--accent);
  }

  .footer-logo .logo-text {
    color: #fff;
    font-size: 18px;
  }

  .footer-brand-desc {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 12px;
  }

  .footer-domain {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.03em;
  }

  .footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: 0.05em;
  }

  .footer-col ul li {
    margin-bottom: 9px;
  }

  .footer-col ul a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.2s ease;
  }

  .footer-col ul a:hover {
    color: var(--accent);
  }

  .footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
  }

  .footer-contact-list i {
    color: var(--accent);
    margin-top: 4px;
    flex-shrink: 0;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
  }

  .footer-bottom a {
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.2s ease;
  }

  .footer-bottom a:hover {
    color: var(--accent);
  }

  /* 响应式 */
  @media (max-width: 1024px) {
    .grid-4 {
      grid-template-columns: repeat(2, 1fr);
    }

    .grid-3,
    .related-cards {
      grid-template-columns: repeat(2, 1fr);
    }

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

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

  @media (max-width: 768px) {
    .container {
      padding: 0 20px;
    }

    .header-inner {
      height: 64px;
    }

    .nav-toggle {
      display: flex;
    }

    .main-nav {
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      background: rgba(247, 246, 242, 0.98);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 12px 24px rgba(10, 42, 36, 0.08);
      padding: 16px 20px 28px;
      transform: translateY(-12px);
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
      z-index: 99;
    }

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

    .main-nav ul {
      flex-direction: column;
      align-items: stretch;
      gap: 4px;
    }

    .main-nav a:not(.nav-cta) {
      padding: 12px 8px;
      font-size: 16px;
    }

    .main-nav a:not(.nav-cta)::after {
      display: none;
    }

    .main-nav a.active {
      color: var(--primary);
      background: rgba(10, 92, 78, 0.06);
      border-radius: 8px;
    }

    .nav-cta {
      margin-left: 0;
      margin-top: 8px;
      justify-content: center;
      height: 46px;
    }

    .page-hero {
      padding: 110px 0 56px;
    }

    .page-hero h1 {
      font-size: 32px;
    }

    .hero-lead {
      font-size: 15px;
    }

    .split-row,
    .split-row.reverse {
      flex-direction: column;
      gap: 32px;
    }

    .split-text {
      flex: 1 1 auto;
    }

    .split-text h2 {
      font-size: 22px;
    }

    .split-image img {
      height: 220px;
    }

    .section-space {
      padding: 52px 0;
    }

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

    .faq-layout {
      grid-template-columns: 1fr;
      gap: 24px;
    }

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

    .cta-band h2 {
      font-size: 22px;
    }

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

  @media (max-width: 640px) {
    .grid-4,
    .grid-3,
    .related-cards,
    .steps-grid {
      grid-template-columns: 1fr;
    }

    .hero-actions .btn {
      width: 100%;
    }

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

    .section-header p {
      font-size: 14px;
    }
  }