/* roulang page: index */
:root {
  --primary: #1B7A96;
  --primary-dark: #14596F;
  --primary-light: #E3F1F5;
  --accent: #F2A33C;
  --accent-light: #FCF1E1;
  --bg: #F6F9FB;
  --bg-alt: #F0F5F8;
  --white: #FFFFFF;
  --text: #1D2B36;
  --text-secondary: #5C7280;
  --text-muted: #8DA3B0;
  --border: #DCE6EC;
  --shadow-sm: 0 2px 8px rgba(23,58,74,0.06);
  --shadow-md: 0 12px 32px rgba(23,58,74,0.10);
  --shadow-hover: 0 8px 20px rgba(23,58,74,0.16);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }
button, input, select { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }

.container { max-width: 1200px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s ease, background .25s ease, border-color .25s ease;
}
.site-header.scrolled {
  background: #fff;
  box-shadow: var(--shadow-sm);
  border-bottom-color: var(--border);
}
.nav-desktop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}
.nav-group {
  display: flex;
  align-items: center;
  flex: 1;
  gap: 28px;
}
.nav-group.left { justify-content: flex-start; }
.nav-group.right { justify-content: flex-end; }
.nav-link-custom {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 2px;
  position: relative;
  white-space: nowrap;
}
.nav-link-custom:hover { color: var(--primary); }
.nav-link-custom.active { color: var(--primary); }
.nav-link-custom.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0 24px;
  font-size: 21px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.brand-logo:hover { color: var(--text); }
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff !important;
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  transition: all .2s ease;
}
.btn-cta:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.btn-cta:active { transform: translateY(0); }

/* Mobile header */
.mobile-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.mobile-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 22px;
  background: transparent;
  cursor: pointer;
}
.mobile-toggle:hover { background: var(--bg-alt); }
.mobile-brand {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.mobile-contact {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  font-size: 18px;
}
.mobile-menu {
  display: none;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background: #fff;
  padding: 8px 24px 20px;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 14px 4px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--bg-alt);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a.active { color: var(--primary); }
.mobile-menu .btn-cta {
  margin-top: 14px;
  width: 100%;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  padding: 90px 0;
  background: linear-gradient(100deg, rgba(246,249,251,0.94) 0%, rgba(224,237,242,0.75) 45%, rgba(27,122,150,0.28) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
}
.hero .container { position: relative; z-index: 2; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(27,122,150,0.10);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  border-radius: 100px;
  padding: 6px 16px;
  margin-bottom: 20px;
  border: 1px solid rgba(27,122,150,0.18);
}
.hero h1 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 16px;
  max-width: 720px;
  letter-spacing: -0.01em;
}
.hero-sub {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff !important;
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 13px 32px;
  font-size: 16px;
  font-weight: 600;
  transition: all .2s ease;
}
.btn-primary-custom:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.btn-outline-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text) !important;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 32px;
  font-size: 16px;
  font-weight: 600;
  transition: all .2s ease;
}
.btn-outline-custom:hover {
  border-color: var(--primary);
  color: var(--primary) !important;
  background: rgba(27,122,150,0.04);
  transform: translateY(-2px);
}
.hero-process {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}
.hero-process i { color: var(--accent); font-size: 14px; }
.hero-process span {
  background: rgba(255,255,255,0.85);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 16px;
  font-weight: 500;
}
.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--text-muted);
  font-size: 20px;
  opacity: 0.7;
}

/* ---------- Section ---------- */
.section {
  padding: 90px 0;
}
.section-alt { background: var(--bg-alt); }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  text-transform: none;
  letter-spacing: 0;
  margin-bottom: 10px;
}
.section-label::before {
  content: '';
  width: 20px;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
}
.section-heading {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}
.section-heading .section-label {
  justify-content: center;
}
.section-heading .section-label::before {
  width: 24px;
}
.section h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ---------- Pain Points ---------- */
.pain-section {
  background: var(--white);
}
.pain-content h2 {
  font-size: 28px;
  margin-bottom: 16px;
}
.pain-content p {
  color: var(--text-secondary);
  font-size: 16px;
}
.pain-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.pain-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: all .2s ease;
  box-shadow: var(--shadow-sm);
}
.pain-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.pain-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.pain-card h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
}
.pain-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

/* ---------- Solution ---------- */
.solution-section {
  background: var(--bg);
}
.solution-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
}
.solution-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  min-height: 360px;
}
.solution-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 24px;
}
.solution-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: all .2s ease;
  box-shadow: var(--shadow-sm);
}
.solution-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: rgba(27,122,150,0.3);
}
.solution-index {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: 'SF Mono', 'Courier New', monospace;
}
.solution-content h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
}
.solution-content p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* ---------- Results ---------- */
.results-section {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.result-item {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 36px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  position: relative;
  transition: all .2s ease;
}
.result-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.result-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  border-radius: 0 0 4px 4px;
  background: var(--accent);
}
.result-num {
  font-size: 42px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  font-family: 'SF Mono', 'Courier New', monospace;
  letter-spacing: -0.02em;
}
.result-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ---------- FAQ ---------- */
.faq-section {
  background: var(--white);
}
.faq-grid {
  max-width: 980px;
  margin: 0 auto;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all .2s ease;
}
.faq-item:hover {
  border-color: rgba(27,122,150,0.35);
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '\F64D';
  font-family: 'bootstrap-icons';
  font-size: 16px;
  color: var(--text-muted);
  transition: transform .25s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  content: '\F63B';
  color: var(--primary);
}
.faq-item .faq-answer {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ---------- Testimonials ---------- */
.testimonial-section {
  background: var(--bg);
}
.tst-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: start;
}
.tst-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all .2s ease;
}
.tst-card:nth-child(2) { transform: translateY(16px); }
.tst-card:nth-child(2):hover { transform: translateY(12px); }
.tst-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.tst-card:nth-child(2):hover { transform: translateY(12px); }
.tst-quote {
  font-size: 32px;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 14px;
  font-family: Georgia, serif;
}
.tst-text {
  font-size: 15px;
  color: var(--text);
  line-height: 1.75;
  margin-bottom: 20px;
}
.tst-person {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--bg-alt);
  padding-top: 16px;
}
.tst-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.tst-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.tst-role {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- CTA ---------- */
.cta-section {
  position: relative;
  background: var(--primary);
  padding: 90px 0;
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(242,163,60,0.15);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.75;
}
.btn-cta-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--text) !important;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 14px 38px;
  font-size: 16px;
  font-weight: 600;
  transition: all .2s ease;
}
.btn-cta-light:hover {
  background: #E89525;
  border-color: #E89525;
  color: var(--text) !important;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0,0,0,0.18);
}

/* ---------- News ---------- */
.news-section {
  background: var(--white);
}
.news-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.news-header h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 0;
}
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
}
.link-more i { transition: transform .2s ease; }
.link-more:hover i { transform: translateX(4px); }
.news-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 100%;
  transition: all .2s ease;
  box-shadow: var(--shadow-sm);
}
.news-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: rgba(27,122,150,0.28);
}
.news-cover {
  width: 100%;
  height: 220px;
  overflow: hidden;
}
.news-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.news-card:hover .news-cover img { transform: scale(1.04); }
.news-body {
  padding: 22px 24px 26px;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.badge-soft {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: 4px;
  padding: 3px 10px;
  white-space: nowrap;
}
.news-date {
  font-size: 13px;
  color: var(--text-muted);
  font-family: 'SF Mono', 'Courier New', monospace;
}
.news-body h3 {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 8px;
}
.news-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-list-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: 100%;
}
.news-item {
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: all .2s ease;
  height: auto;
  flex: 1;
}
.news-item:hover {
  background: var(--white);
  border-color: rgba(27,122,150,0.3);
  box-shadow: var(--shadow-sm);
  transform: translateY(-3px);
}
.news-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 6px 0 4px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item .news-date {
  display: inline-block;
}
.news-item-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  border-style: dashed;
  background: var(--bg);
}
.news-item-empty p {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0;
}
.news-empty {
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 48px 32px;
  text-align: center;
  color: var(--text-muted);
  font-size: 16px;
}
.news-empty i {
  display: block;
  font-size: 36px;
  color: var(--text-muted);
  margin-bottom: 12px;
  opacity: 0.5;
}

/* ---------- Footer ---------- */
.site-footer {
  background: #1B2A33;
  color: rgba(255,255,255,0.75);
  padding: 60px 0 0;
}
.footer-main {
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.10);
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.footer-brand:hover { color: #fff; }
.footer-brand .logo-icon { filter: brightness(1); }
.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
  max-width: 320px;
  margin: 0;
}
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: color .2s ease;
}
.footer-links a:hover {
  color: #fff;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
}
.footer-contact i {
  color: var(--accent);
  font-size: 16px;
}
.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p {
  margin: 0;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}
.footer-bottom a {
  color: rgba(255,255,255,0.45);
}
.footer-bottom a:hover { color: #fff; }

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
  .nav-desktop { display: none; }
  .mobile-header { display: flex; }
  .section { padding: 64px 0; }
  .hero { min-height: auto; padding: 80px 0; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .results-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .tst-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .tst-card:nth-child(2) { transform: none; }
  .tst-card:nth-child(2):hover { transform: translateY(-4px); }
  .solution-img-wrap { margin-bottom: 32px; }
  .solution-img-wrap img { min-height: 220px; }
  .news-body h3 { font-size: 18px; }
  .section-heading h2 { font-size: 26px; }
  .cta-section h2 { font-size: 27px; }
}
@media (max-width: 767.98px) {
  body { font-size: 15px; }
  .container { padding-left: 20px; padding-right: 20px; }
  .section { padding: 52px 0; }
  .hero {
    padding: 70px 0;
    background: linear-gradient(180deg, rgba(246,249,251,0.96) 0%, rgba(224,237,242,0.85) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  }
  .hero h1 { font-size: 27px; }
  .hero-sub { font-size: 15px; margin-bottom: 24px; }
  .hero-actions { gap: 10px; }
  .btn-primary-custom, .btn-outline-custom {
    padding: 12px 24px;
    font-size: 15px;
    flex: 1;
    min-width: 140px;
  }
  .hero-process { justify-content: center; }
  .hero-process i { transform: rotate(90deg); }
  .section-heading { margin-bottom: 32px; }
  .section h2 { font-size: 24px; }
  .solution-list { gap: 12px; }
  .solution-item { padding: 16px; }
  .results-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .result-item { padding: 24px 16px; }
  .result-num { font-size: 32px; }
  .faq-item summary { padding: 16px; }
  .faq-item .faq-answer { padding: 0 16px 16px; }
  .news-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .news-cover { height: 180px; }
  .footer-main .row > div { margin-bottom: 28px; }
  .footer-bottom { justify-content: center; text-align: center; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 24px; }
  .hero-tag { font-size: 13px; padding: 5px 12px; }
  .section h2 { font-size: 22px; }
  .pain-card { padding: 18px; }
  .pain-icon { width: 40px; height: 40px; font-size: 18px; }
  .result-num { font-size: 28px; }
  .result-desc { font-size: 13px; }
  .news-body { padding: 18px; }
  .news-body h3 { font-size: 16px; }
  .news-item { padding: 14px 16px; }
}

/* roulang page: article */
:root {
  --primary: #1B7A96;
  --primary-dark: #145E73;
  --primary-light: #E3F0F4;
  --accent: #F2A33C;
  --accent-light: #FFF3E0;
  --bg: #F6F9FB;
  --bg-alt: #F0F5F8;
  --white: #FFFFFF;
  --text: #1D2B36;
  --text-secondary: #5C7280;
  --text-muted: #8DA3B0;
  --border: #DCE6EC;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(23,58,74,0.06);
  --shadow-md: 0 12px 32px rgba(23,58,74,0.10);
  --shadow-hover: 0 8px 20px rgba(23,58,74,0.16);
  --font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --transition: all 0.2s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; vertical-align: middle; }
button { border: none; background: none; cursor: pointer; }
ul, ol { list-style: none; }
.container { max-width: 1200px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(246,249,251,0.92);
  transition: var(--transition);
}
.site-header.scrolled {
  background: var(--white);
  box-shadow: var(--shadow-sm);
}
.nav-desktop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.nav-group {
  display: flex;
  align-items: center;
  gap: 6px;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}
.brand-logo .logo-icon {
  display: inline-flex;
  flex-shrink: 0;
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.nav-link-custom {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-link-custom:hover {
  color: var(--primary);
  background: rgba(27,122,150,0.06);
}
.nav-link-custom.active {
  color: var(--primary);
  position: relative;
  font-weight: 600;
}
.nav-link-custom.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  border: 1px solid var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.btn-cta:hover,
.btn-cta:focus {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.mobile-header { display: none; }
.mobile-menu { display: none; }

/* ---------- Page Banner ---------- */
.page-banner {
  background:
    linear-gradient(135deg, rgba(246,249,251,0.96), rgba(224,239,244,0.86)),
    url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  border-bottom: 1px solid var(--border);
  padding: 44px 0 32px;
}
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
  padding: 0;
}
.breadcrumb-list a {
  color: var(--text-secondary);
}
.breadcrumb-list a:hover {
  color: var(--primary);
}
.breadcrumb-list .divider {
  color: #c0d0d8;
}
.breadcrumb-list .active {
  color: var(--text);
  font-weight: 500;
  max-width: 360px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- Article Main ---------- */
.article-main {
  padding: 56px 0 40px;
}
.article-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 48px;
  max-width: 880px;
  margin: 0 auto;
}
.article-card .post-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}
.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.post-meta i {
  margin-right: 4px;
}
.post-category {
  display: inline-flex;
  align-items: center;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 4px;
}
.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}
.article-content p {
  margin-bottom: 24px;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--text);
  padding-left: 14px;
  border-left: 4px solid var(--primary);
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
}
.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 10px;
}
.article-content img {
  border-radius: 12px;
  margin: 24px 0;
}
.article-content ul,
.article-content ol {
  margin: 16px 0 24px;
  padding-left: 24px;
  list-style: initial;
}
.article-content ol {
  list-style: decimal;
}
.article-content ul li,
.article-content ol li {
  margin-bottom: 8px;
}
.article-content blockquote {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin: 24px 0;
  color: var(--primary-dark);
  font-style: italic;
}
.article-content blockquote p {
  margin-bottom: 0;
}
.article-content a {
  color: var(--primary);
  border-bottom: 1px solid rgba(27,122,150,0.3);
}
.article-content a:hover {
  color: var(--primary-dark);
  border-color: var(--primary);
}
.article-content code {
  background: var(--bg-alt);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.9em;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
.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-alt);
  font-weight: 600;
}
.article-content .wp-block-quote,
.article-content figure {
  margin: 24px 0;
}
.article-content figcaption {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
}

/* Article empty */
.article-empty {
  text-align: center;
  padding: 60px 20px;
}
.article-empty .empty-icon {
  font-size: 48px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.article-empty h2 {
  font-size: 22px;
  color: var(--text);
  margin-bottom: 12px;
}
.article-empty p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  border: 1px solid var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 10px 26px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.btn-primary-custom:hover,
.btn-primary-custom:focus {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* Post return */
.post-return {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 14px;
}
.post-return a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 500;
}
.post-return a:hover {
  color: var(--primary-dark);
}

/* ---------- About Strip ---------- */
.about-strip {
  padding: 0 0 56px;
}
.about-strip-inner {
  max-width: 880px;
  margin: 0 auto;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  align-items: center;
}
.about-strip-img {
  width: 44%;
  flex-shrink: 0;
}
.about-strip-img img {
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  display: block;
}
.about-strip-text {
  padding: 32px 36px;
}
.about-strip-text h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.about-strip-text p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.link-more:hover {
  color: var(--primary-dark);
}

/* ---------- Related ---------- */
.related-section {
  padding: 0 0 56px;
}
.related-title-block {
  max-width: 880px;
  margin: 0 auto 24px;
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  position: relative;
  padding-left: 14px;
}
.related-title-block::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 20px;
  background: var(--primary);
  border-radius: 2px;
}
.related-list {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.related-item {
  display: flex;
  align-items: stretch;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.related-item:hover,
.related-item:focus {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
.related-thumb {
  width: 160px;
  min-height: 120px;
  flex-shrink: 0;
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.related-item-info {
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}
.related-item-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-item-meta {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- Pre CTA ---------- */
.article-pre-cta {
  padding: 0 0 72px;
}
.pre-cta-box {
  max-width: 880px;
  margin: 0 auto;
  background: var(--primary);
  border-radius: 20px;
  padding: 40px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #fff;
  box-shadow: var(--shadow-md);
}
.pre-cta-content h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}
.pre-cta-content p {
  font-size: 15px;
  opacity: 0.88;
  margin: 0;
}
.btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border: 1px solid var(--white);
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  padding: 10px 26px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: var(--transition);
}
.btn-white:hover,
.btn-white:focus {
  background: #f0f6f8;
  border-color: #f0f6f8;
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255,255,255,0.22);
}

/* ---------- Footer ---------- */
.site-footer {
  background: #1B2A33;
  color: #B7C6CF;
  padding: 64px 0 0;
}
.footer-main {
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand .logo-icon {
  display: inline-flex;
}
.footer-desc {
  font-size: 14px;
  color: #8FA1AC;
  max-width: 320px;
  margin-top: 12px;
}
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a,
.footer-contact li {
  font-size: 14px;
  color: #B7C6CF;
  transition: var(--transition);
}
.footer-links a:hover {
  color: #fff;
}
.footer-contact {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-contact li {
  margin-bottom: 10px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact i {
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 20px 0;
  font-size: 13px;
  color: #8FA1AC;
}
.footer-bottom p {
  margin: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 991px) {
  .nav-desktop {
    display: none;
  }
  .mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
  }
  .mobile-toggle {
    font-size: 26px;
    color: var(--text);
    padding: 6px;
    line-height: 1;
  }
  .mobile-toggle:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 6px;
  }
  .mobile-brand {
    font-weight: 700;
    font-size: 18px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .mobile-contact {
    font-size: 20px;
    color: var(--primary);
    padding: 6px;
  }
  .mobile-menu {
    display: none;
    flex-direction: column;
    background: var(--white);
    border-top: 1px solid var(--border);
    padding: 12px 0;
  }
  .mobile-menu.open {
    display: flex;
  }
  .mobile-menu a {
    padding: 12px 24px;
    font-size: 16px;
    color: var(--text-secondary);
    border-bottom: 1px solid #f0f4f6;
  }
  .mobile-menu a:last-child {
    border-bottom: none;
  }
  .mobile-menu a.active {
    color: var(--primary);
    font-weight: 600;
    background: var(--primary-light);
  }
  .mobile-menu a.btn-cta {
    margin: 12px 16px 8px;
    justify-content: center;
    color: #fff;
    border-radius: var(--radius-sm);
  }
  .related-thumb {
    width: 130px;
  }
}

@media (max-width: 767px) {
  .page-banner {
    padding: 32px 0 24px;
  }
  .article-main {
    padding: 32px 0 28px;
  }
  .article-card {
    padding: 28px 22px;
  }
  .article-card .post-title {
    font-size: 28px;
  }
  .post-meta {
    gap: 10px;
  }
  .about-strip-inner {
    flex-direction: column;
  }
  .about-strip-img {
    width: 100%;
  }
  .about-strip-img img {
    min-height: 180px;
  }
  .about-strip-text {
    padding: 24px;
  }
  .related-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .related-thumb {
    width: 120px;
  }
  .pre-cta-box {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .related-item {
    flex-direction: row;
  }
  .related-thumb {
    width: 104px;
    min-height: 96px;
  }
  .related-item-title {
    font-size: 15px;
  }
  .breadcrumb-list .active {
    max-width: 220px;
  }
}

/* roulang page: category1 */
:root {
            --primary: #1B7A96;
            --primary-dark: #146378;
            --primary-light: #EAF3F6;
            --accent: #F2A33C;
            --accent-dark: #D88A20;
            --bg-main: #F6F9FB;
            --bg-alt: #F0F5F8;
            --card-bg: #FFFFFF;
            --text-main: #1D2B36;
            --text-secondary: #5C7280;
            --text-muted: #8DA3B0;
            --border: #DCE6EC;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(23, 58, 74, 0.06);
            --shadow-md: 0 12px 32px rgba(23, 58, 74, 0.10);
            --shadow-hover: 0 8px 20px rgba(23, 58, 74, 0.16);
            --transition: 0.2s ease;
            --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg-main);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition);
        }

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

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

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

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 74px;
            background: rgba(246, 249, 251, 0.94);
            border-bottom: 1px solid transparent;
            transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
        }

        .site-header.scrolled {
            background: #FFFFFF;
            box-shadow: var(--shadow-sm);
            border-color: var(--border);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100%;
            position: relative;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

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

        .nav-group.left {
            justify-content: flex-start;
        }

        .nav-group.right {
            justify-content: flex-end;
        }

        .nav-link-custom {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            transition: color var(--transition);
        }

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

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

        .nav-link-custom.active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--text-main);
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .btn-cta {
            background: var(--accent);
            color: var(--text-main);
            border: none;
            padding: 9px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }

        .btn-cta:hover {
            background: var(--accent-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .mobile-header {
            display: none;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
        }

        .mobile-toggle {
            background: none;
            border: none;
            font-size: 26px;
            color: var(--text-main);
            padding: 0;
            cursor: pointer;
            line-height: 1;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--primary-light);
        }

        .mobile-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-main);
            white-space: nowrap;
        }

        .mobile-brand:hover {
            color: var(--text-main);
        }

        .mobile-contact {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-sm);
            font-size: 18px;
            transition: all var(--transition);
        }

        .mobile-contact:hover {
            background: var(--primary);
            color: #FFFFFF;
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 12px 24px 20px;
            flex-direction: column;
            gap: 4px;
            z-index: 999;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 0;
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            border-bottom: 1px solid #EDF2F5;
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        .mobile-menu a.active {
            color: var(--primary);
        }

        .mobile-menu a.btn-cta {
            background: var(--accent);
            color: var(--text-main);
            text-align: center;
            border-radius: var(--radius-sm);
            padding: 11px 20px;
            margin-top: 8px;
            border-bottom: none;
            font-weight: 600;
        }

        /* ===== Buttons ===== */
        .btn-primary-custom {
            background: var(--primary);
            border: 1px solid var(--primary);
            color: #FFFFFF;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .btn-outline-custom {
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }

        .btn-outline-custom:hover {
            background: var(--primary);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, 0.75);
            color: #FFFFFF;
            background: transparent;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            background: url("/assets/images/backpic/back-1.png") center / cover no-repeat;
            padding: 140px 0 100px;
            display: flex;
            align-items: center;
            min-height: 480px;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(27, 122, 150, 0.88) 0%, rgba(27, 122, 150, 0.66) 45%, rgba(27, 122, 150, 0.38) 100%);
            z-index: 0;
        }

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

        .breadcrumb-nav {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.85);
        }

        .breadcrumb-nav a:hover {
            color: #FFFFFF;
        }

        .breadcrumb-nav .divider {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.6);
        }

        .breadcrumb-nav span:last-child {
            color: rgba(255, 255, 255, 0.95);
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.36);
            padding: 6px 16px;
            border-radius: 999px;
            color: rgba(255, 255, 255, 0.95);
            font-size: 13px;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .category-hero h1 {
            color: #FFFFFF;
            font-size: 38px;
            font-weight: 700;
            margin: 0 0 10px;
            line-height: 1.3;
        }

        .hero-subtitle {
            color: rgba(255, 255, 255, 0.92);
            font-size: 17px;
            margin-bottom: 30px;
            max-width: 520px;
        }

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

        .hero-actions .btn-primary-custom {
            background: #FFFFFF;
            border-color: #FFFFFF;
            color: var(--primary);
        }

        .hero-actions .btn-primary-custom:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: var(--primary-dark);
            box-shadow: var(--shadow-hover);
        }

        .hero-actions .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.8);
        }

        /* ===== Section Head ===== */
        .section-head {
            text-align: center;
            max-width: 660px;
            margin: 0 auto 56px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin: 12px 0 12px;
            line-height: 1.35;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 16px;
            margin: 0;
        }

        .section-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }

        .topic-section,
        .featured-section,
        .flow-section,
        .topics-section,
        .faq-section,
        .page-cta {
            padding: 90px 0;
        }

        .featured-section,
        .topics-section {
            background: var(--bg-alt);
        }

        /* ===== Topic Cards ===== */
        .topic-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            height: 100%;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }

        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(27, 122, 150, 0.3);
        }

        .topic-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 18px;
        }

        .topic-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .topic-card p {
            color: var(--text-secondary);
            font-size: 14px;
            margin: 0;
            line-height: 1.65;
        }

        /* ===== Featured Content ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 28px;
        }

        .featured-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
        }

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

        .featured-card--large {
            grid-column: 1 / -1;
            display: grid;
            grid-template-columns: 1.15fr 1fr;
            gap: 0;
        }

        .featured-card--standard {
            grid-column: span 6;
            display: flex;
            flex-direction: column;
        }

        .featured-image {
            overflow: hidden;
        }

        .featured-card--large .featured-image {
            aspect-ratio: 16 / 9;
            min-height: 100%;
        }

        .featured-card--standard .featured-image {
            aspect-ratio: 16 / 9;
        }

        .featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .featured-body {
            padding: 28px;
            display: flex;
            flex-direction: column;
        }

        .featured-card--standard .featured-body {
            flex: 1;
        }

        .featured-card--standard .meta-info {
            margin-top: auto;
            padding-top: 16px;
        }

        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 4px;
            margin-bottom: 14px;
            align-self: flex-start;
        }

        .featured-body h3 {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.45;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .featured-card--large .featured-body h3 {
            font-size: 22px;
        }

        .featured-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .meta-info {
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--text-muted);
            font-size: 13px;
        }

        .meta-info a {
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .meta-info a:hover {
            color: var(--primary-dark);
        }

        /* ===== Flow Section ===== */
        .flow-steps {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .flow-step {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            padding: 22px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .flow-step:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-md);
        }

        .step-num {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
        }

        .flow-step h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 6px;
        }

        .flow-step p {
            color: var(--text-secondary);
            font-size: 14px;
            margin: 0;
            line-height: 1.65;
        }

        .flow-section .btn-outline-custom {
            margin-top: 24px;
        }

        /* ===== Topic List ===== */
        .topic-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
            max-width: 880px;
            margin: 0 auto;
        }

        .topic-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .topic-list-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .topic-list-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .topic-list-body {
            flex: 1;
            min-width: 0;
        }

        .topic-list-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 4px;
        }

        .topic-list-body p {
            color: var(--text-secondary);
            font-size: 14px;
            margin: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .topic-list-date {
            color: var(--text-muted);
            font-size: 13px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin-bottom: 16px;
            transition: box-shadow var(--transition);
        }

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

        .faq-item details summary {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            list-style: none;
            position: relative;
            padding-right: 30px;
        }

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

        .faq-item details summary::after {
            content: "+";
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            font-size: 22px;
            color: var(--primary);
            font-weight: 400;
            transition: transform 0.2s ease;
        }

        .faq-item details[open] summary::after {
            transform: translateY(-50%) rotate(45deg);
        }

        .faq-item details p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
            margin: 12px 0 0;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }

        /* ===== CTA ===== */
        .page-cta {
            background: var(--bg-main);
        }

        .cta-box {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .cta-box::after {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-box::before {
            content: "";
            position: absolute;
            left: -40px;
            bottom: -80px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(242, 163, 60, 0.15);
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .cta-actions .btn-cta {
            background: var(--accent);
            color: var(--text-main);
            padding: 13px 34px;
            font-size: 16px;
        }

        .cta-actions .btn-cta:hover {
            background: var(--accent-dark);
            color: #FFFFFF;
        }

        .cta-actions .btn-outline-light {
            padding: 13px 34px;
            font-size: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1B2A33;
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
            font-size: 14px;
        }

        .footer-main {
            padding-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .footer-brand:hover {
            color: #FFFFFF;
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
            font-size: 14px;
        }

        .footer-title {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
        }

        .footer-links,
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li,
        .footer-contact li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: all var(--transition);
        }

        .footer-links a:hover {
            color: #FFFFFF;
            padding-left: 4px;
        }

        .footer-contact {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
            margin: 0;
        }

        .footer-bottom p {
            margin: 0;
        }

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

            .mobile-header {
                display: flex;
            }

            .site-header {
                height: 64px;
            }
        }

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

            .category-hero {
                padding: 100px 0 72px;
                min-height: 420px;
            }

            .category-hero h1 {
                font-size: 28px;
            }

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

            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-light {
                padding: 10px 24px;
                font-size: 14px;
            }

            .topic-section,
            .featured-section,
            .flow-section,
            .topics-section,
            .faq-section,
            .page-cta {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

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

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

            .featured-card--large {
                grid-column: 1;
                grid-template-columns: 1fr;
            }

            .featured-card--standard {
                grid-column: 1;
            }

            .featured-card--large .featured-body h3 {
                font-size: 18px;
            }

            .featured-body {
                padding: 20px;
            }

            .topic-list-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .topic-list-date {
                align-self: flex-start;
            }

            .cta-box {
                padding: 40px 24px;
            }

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

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

            .flow-section .btn-outline-custom {
                margin-top: 16px;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .mobile-brand {
                font-size: 16px;
            }

            .brand-logo .logo-icon,
            .mobile-brand .logo-icon {
                transform: scale(0.9);
            }

            .topic-card {
                padding: 22px 18px;
            }

            .faq-item {
                padding: 20px 18px;
            }

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

            .cta-actions .btn-cta,
            .cta-actions .btn-outline-light {
                justify-content: center;
                width: 100%;
            }
        }