/* roulang page: index */
:root {
  --primary: #059669;
  --primary-start: #10B981;
  --primary-end: #0D9488;
  --accent: #F97316;
  --accent-hover: #FB923C;
  --ink: #1E293B;
  --body-bg: #F8FAFC;
  --card-border: #E2E8F0;
  --muted: #94A3B8;
  --shadow-card: 0 1px 3px rgba(0,0,0,.04);
  --shadow-hover: 0 12px 32px rgba(0,0,0,.10);
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--body-bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
.section-pad { padding: 4rem 0; }
.site-header {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: box-shadow .3s ease, background .3s ease;
}
.site-header.scrolled {
  box-shadow: 0 1px 10px rgba(226,232,240,.8);
  background: rgba(255,255,255,.98);
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: .5rem 1rem;
  border-radius: 9999px;
  font-size: .875rem;
  font-weight: 500;
  color: #475569;
  transition: color .2s, background .2s;
}
.nav-link:hover {
  color: #047857;
  background: rgba(16,185,129,.07);
}
.nav-link.active {
  color: #047857;
  background: rgba(16,185,129,.12);
  font-weight: 600;
}
.btn-login {
  display: inline-flex;
  align-items: center;
  height: 2.5rem;
  padding: 0 1.5rem;
  border-radius: 9999px;
  background: linear-gradient(135deg, #059669, #0d9488);
  color: #fff;
  font-size: .875rem;
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(5,150,105,.3);
  transition: box-shadow .2s, filter .2s, transform .2s;
}
.btn-login:hover { box-shadow: 0 4px 14px rgba(5,150,105,.35); filter: brightness(1.08); }
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #059669, #0d9488);
  color: #fff;
  font-size: .9375rem;
  font-weight: 600;
  padding: .8rem 2rem;
  border-radius: 9999px;
  box-shadow: 0 4px 18px rgba(5,150,105,.28);
  transition: box-shadow .25s, transform .25s, filter .25s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(5,150,105,.35);
  filter: brightness(1.06);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #cbd5e1;
  color: #334155;
  font-size: .9375rem;
  font-weight: 600;
  padding: .75rem 2rem;
  border-radius: 9999px;
  background: transparent;
  transition: border-color .2s, color .2s, transform .2s;
}
.btn-outline:hover {
  border-color: #059669;
  color: #047857;
  transform: translateY(-2px);
}
.gradient-text {
  background: linear-gradient(90deg, #059669, #14b8a6);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.metric-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: background .25s, border-color .25s, transform .25s;
}
.metric-card:hover {
  background: rgba(255,255,255,.09);
  border-color: rgba(255,255,255,.2);
  transform: translateY(-3px);
}
.service-card {
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  transition: box-shadow .3s, transform .3s, border-color .3s;
}
.service-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-5px);
  border-color: #6ee7b7;
}
.service-top-bar {
  position: absolute;
  top: 0; left: 0;
  width: 32px; height: 3px;
  background: linear-gradient(90deg, #10b981, #2dd4bf);
  border-radius: 0 0 4px 0;
  transition: width .35s ease;
}
.service-card:hover .service-top-bar { width: 100%; }
.service-icon {
  width: 3rem; height: 3rem;
  border-radius: .75rem;
  background: #ecfdf5;
  color: #059669;
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  transition: background .25s;
}
.service-card:hover .service-icon { background: #d1fae5; }
.compare-item { padding: 1rem 0; }
.article-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  overflow: hidden;
  transition: background .25s, border-color .25s, box-shadow .25s;
}
.article-card:hover {
  background: rgba(236,253,245,.65);
  border-color: #a7f3d0;
  box-shadow: 0 4px 18px rgba(0,0,0,.04);
}
.article-cover { position: relative; flex-shrink: 0; background: #e2e8f0; }
.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.faq-item {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  padding: 1.25rem;
  transition: border-color .3s, background .3s;
}
.faq-item.active {
  border-color: #6ee7b7;
  background: #fff;
}
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; text-align: left; font-weight: 600; color: #0f172a; background: none; border: none; padding: 0; }
.faq-icon {
  flex-shrink: 0;
  width: 2rem; height: 2rem;
  border-radius: 9999px;
  background: #fff;
  border: 1px solid #e2e8f0;
  display: grid;
  place-items: center;
  color: #64748b;
  transition: transform .3s ease, background .3s, color .3s;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: #ecfdf5;
  color: #059669;
  border-color: #6ee7b7;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.form-input {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: .5rem;
  padding: .7rem .875rem;
  font-size: .875rem;
  color: #1e293b;
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.form-input:focus {
  outline: none;
  border-color: #10b981;
  box-shadow: 0 0 0 4px rgba(16,185,129,.12);
}
.form-input::placeholder { color: #94a3b8; }
.mobile-drawer {
  position: fixed;
  top: 0; right: 0;
  width: 320px;
  height: 100%;
  background: #f8fafc;
  z-index: 70;
  transform: translateX(100%);
  transition: transform .3s ease;
  box-shadow: -8px 0 30px rgba(15,23,42,.12);
  overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.5);
  z-index: 65;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
.drawer-overlay.open { opacity: 1; pointer-events: auto; }
.mobile-link {
  display: block;
  padding: .9rem 1rem;
  border-radius: .75rem;
  font-size: .9375rem;
  font-weight: 500;
  color: #334155;
  transition: background .2s, color .2s;
}
.mobile-link:hover { background: #ecfdf5; color: #047857; }
.mobile-link.active { background: #ecfdf5; color: #047857; font-weight: 600; }
.footer-link { transition: color .2s; }
.footer-link:hover { color: #fff; }
@media (min-width: 640px) {
  .article-card { flex-direction: row; }
  .article-cover { width: 240px; min-height: 160px; }
}
@media (max-width: 639px) {
  .article-cover { height: 190px; }
}
@media (max-width: 1023px) {
  .desktop-nav { display: none; }
}
@media (min-width: 1024px) {
  .mobile-menu-btn { display: none; }
}

/* roulang page: article */
:root {
  --primary: #059669;
  --primary-dark: #047857;
  --primary-gradient-start: #10B981;
  --primary-gradient-end: #0D9488;
  --accent: #F97316;
  --ink: #1E293B;
  --body-bg: #F8FAFC;
  --card-border: #E2E8F0;
  --shadow-card: 0 1px 3px rgba(0,0,0,.04);
  --shadow-hover: 0 12px 32px rgba(0,0,0,.10);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--body-bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; transition: color .2s; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 24px; }

.site-header {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226,232,240,.8);
  transition: box-shadow .3s ease, background .3s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,.98);
  box-shadow: 0 4px 24px rgba(2,6,23,.06);
}
.nav-link {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: #475569;
  line-height: 1.4;
  transition: all .25s ease;
}
.nav-link:hover { color: var(--primary-dark); background: rgba(16,185,129,.08); }
.nav-link.active { color: var(--primary-dark); background: rgba(16,185,129,.12); font-weight: 600; }
.btn-login {
  height: 42px;
  padding: 0 24px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
  transition: all .3s ease;
}
.btn-login:hover { filter: brightness(1.08); box-shadow: 0 6px 16px rgba(5,150,105,.28); transform: translateY(-1px); }
.btn-login:focus-visible { outline: 4px solid rgba(16,185,129,.25); outline-offset: 2px; }

.mobile-menu {
  position: fixed;
  top: 0;
  right: -340px;
  width: min(340px, 86vw);
  height: 100vh;
  background: #f8fafc;
  z-index: 120;
  transition: right .35s ease-in-out;
  box-shadow: -12px 0 40px rgba(2,6,23,.16);
  display: flex;
  flex-direction: column;
}
.mobile-menu.open { right: 0; }
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.45);
  z-index: 110;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s;
  backdrop-filter: blur(2px);
}
.mobile-menu-overlay.open { opacity: 1; pointer-events: auto; }
.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  color: #334155;
  transition: all .2s;
}
.mobile-nav-link:hover, .mobile-nav-link.active { background: rgba(16,185,129,.08); color: var(--primary-dark); }
.mobile-menu-close {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  color: #64748b;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  transition: all .2s;
}
.mobile-menu-close:hover { color: var(--primary-dark); background: #e2e8f0; }

.breadcrumb-wrap { background: #f8fafc; border-bottom: 1px solid #f1f5f9; }
.breadcrumb-wrap a:hover { color: var(--primary); }

.section-eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}

.cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 14px;
  border-radius: 999px;
  background: rgba(16,185,129,.08);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 600;
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  background: #f1f5f9;
  color: #475569;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid #e2e8f0;
  transition: all .25s;
}
.tag-chip:hover { background: rgba(16,185,129,.08); color: var(--primary-dark); border-color: rgba(16,185,129,.3); }

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #0f172a;
  margin: 2.5rem 0 1rem;
  padding-left: 1rem;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1e293b;
  margin: 2rem 0 .75rem;
}
.article-content h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #1e293b;
  margin: 1.6rem 0 .6rem;
}
.article-content p {
  font-size: 1.0625rem;
  line-height: 1.9;
  color: #334155;
  margin-bottom: 1.25rem;
}
.article-content a {
  color: var(--primary);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: rgba(5,150,105,.3);
  text-underline-offset: 3px;
}
.article-content a:hover { text-decoration-color: var(--primary); color: var(--primary-dark); }
.article-content img {
  border-radius: 1rem;
  box-shadow: 0 4px 16px rgba(0,0,0,.08);
  margin: 1.5rem 0;
  max-width: 100%;
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: rgba(16,185,129,.06);
  border-radius: 0 .75rem .75rem 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  color: #475569;
  font-style: italic;
}
.article-content ul, .article-content ol {
  margin: 1rem 0 1.25rem;
  padding-left: 1.5rem;
}
.article-content li { margin-bottom: .5rem; color: #334155; }
.article-content li::marker { color: var(--primary); }
.article-content table {
  display: block;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: .9375rem;
  border-spacing: 0;
}
.article-content th, .article-content td {
  border: 1px solid #e2e8f0;
  padding: .6rem .8rem;
  text-align: left;
  white-space: nowrap;
}
.article-content th { background: #f8fafc; font-weight: 600; color: #1e293b; }
.article-content tr:nth-child(even) { background: #f8fafc; }
.article-content code {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 2px 7px;
  font-size: .875em;
  color: #be185d;
}
.article-content pre {
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 1rem;
  padding: 1.25rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  line-height: 1.7;
}
.article-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
  font-size: .9rem;
}

.pagination-card {
  display: block;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  transition: all .25s ease;
}
.pagination-card:hover {
  background: rgba(16,185,129,.03);
  border-color: rgba(5,150,105,.3);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.related-card {
  transition: border-color .3s, box-shadow .3s, transform .3s;
}
.related-card:hover {
  border-color: rgba(5,150,105,.35);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.related-card img { transition: transform .5s ease; }
.related-card:hover img { transform: scale(1.06); }
.related-card h3 { transition: color .25s; }
.related-card:hover h3 { color: var(--primary-dark); }

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: #fff;
  color: var(--primary-gradient-end);
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  box-shadow: 0 4px 14px rgba(0,0,0,.08);
  transition: all .3s ease;
}
.btn-white:hover { background: #ecfdf5; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,.14); }

.not-found {
  border: 2px dashed #e2e8f0;
  border-radius: 20px;
  padding: 60px 24px;
  text-align: center;
}

.footer-link { transition: color .25s; }
.footer-link:hover { color: #fff; }

:focus-visible { outline: 4px solid rgba(16,185,129,.25); outline-offset: 2px; }

@media (max-width: 767px) {
  .container { padding: 0 18px; }
}

.fa-chevron-right, .fa-arrow-right, .fa-arrow-left { font-size: .7rem; }

/* roulang page: category1 */
:root {
      --primary: #059669;
      --primary-start: #10B981;
      --primary-end: #0D9488;
      --accent: #F97316;
      --ink: #1E293B;
      --body-bg: #F8FAFC;
      --card-border: #E2E8F0;
      --shadow-card: 0 1px 3px rgba(0,0,0,.04);
      --shadow-hover: 0 12px 32px rgba(0,0,0,.10);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      background-color: var(--body-bg);
      color: var(--ink);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }

    @media (min-width: 768px) {
      .container {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }

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

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

    .site-header {
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226,232,240,.6);
      transition: box-shadow .3s ease, background .3s ease;
    }

    .site-header.scrolled {
      box-shadow: 0 4px 20px rgba(0,0,0,.06);
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      padding: .5rem 1rem;
      border-radius: 9999px;
      font-size: .875rem;
      font-weight: 500;
      color: #475569;
      transition: all .25s ease;
    }

    .nav-link:hover {
      color: var(--primary);
      background: rgba(16,185,129,.08);
    }

    .nav-link.active {
      background: rgba(16,185,129,.1);
      color: var(--primary);
      font-weight: 600;
    }

    .btn-login {
      height: 2.5rem;
      padding: 0 1.25rem;
      border-radius: 9999px;
      background: linear-gradient(135deg, #059669, #0d9488);
      color: #fff;
      font-size: .875rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      box-shadow: 0 2px 8px rgba(5,150,105,.25);
      transition: all .3s ease;
    }

    .btn-login:hover {
      box-shadow: 0 4px 16px rgba(5,150,105,.35);
      filter: brightness(1.1);
    }

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: -320px;
      width: 320px;
      height: 100vh;
      background: #f8fafc;
      z-index: 100;
      transition: right .3s ease;
      box-shadow: -8px 0 30px rgba(0,0,0,.1);
    }

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

    .drawer-overlay {
      position: fixed;
      inset: 0;
      background: rgba(15,23,42,.4);
      z-index: 99;
      opacity: 0;
      pointer-events: none;
      transition: opacity .3s ease;
    }

    .drawer-overlay.open {
      opacity: 1;
      pointer-events: auto;
    }

    .mobile-nav-link {
      display: block;
      padding: .75rem 1.25rem;
      border-radius: .75rem;
      font-size: 1rem;
      font-weight: 500;
      color: #334155;
      transition: all .2s ease;
    }

    .mobile-nav-link:hover,
    .mobile-nav-link.active {
      background: rgba(16,185,129,.1);
      color: var(--primary);
    }

    .hero-section {
      position: relative;
      padding: 7rem 0 4rem;
      background: linear-gradient(135deg, #ecfdf5 0%, #f8fafc 50%, #f0fdfa 100%);
      overflow: hidden;
    }

    .hero-section .hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: .10;
    }

    .hero-section .hero-ring {
      position: absolute;
      border: 8px solid rgba(16,185,129,.10);
      border-radius: 50%;
      right: -80px;
      top: -80px;
      width: 360px;
      height: 360px;
      pointer-events: none;
    }

    .hero-section .hero-ring-2 {
      position: absolute;
      border: 4px solid rgba(13,148,136,.08);
      border-radius: 50%;
      right: 120px;
      bottom: -100px;
      width: 220px;
      height: 220px;
      pointer-events: none;
    }

    .gradient-text {
      background: linear-gradient(90deg, #059669, #0d9488);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      display: inline-block;
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      height: 2.75rem;
      padding: 0 1.5rem;
      border: 2px solid #cbd5e1;
      border-radius: .75rem;
      font-size: .875rem;
      font-weight: 600;
      color: #334155;
      transition: all .3s ease;
    }

    .btn-secondary:hover {
      border-color: #10b981;
      color: #059669;
    }

    .section {
      padding: 4rem 0;
    }

    @media (min-width: 768px) {
      .section {
        padding: 5.5rem 0;
      }
    }

    .section-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      font-size: .875rem;
      font-weight: 600;
      letter-spacing: .02em;
      text-transform: uppercase;
      color: #059669;
      background: rgba(16,185,129,.08);
      padding: .375rem .875rem;
      border-radius: 9999px;
    }

    .service-card {
      background: #fff;
      border: 1px solid var(--card-border);
      border-radius: 1.5rem;
      padding: 1.75rem;
      position: relative;
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: all .3s ease;
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 32px;
      height: 4px;
      background: linear-gradient(90deg, #10b981, #2dd4bf);
      border-radius: 0 4px 4px 0;
      transition: width .4s ease;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: #6ee7b7;
    }

    .service-card:hover::before {
      width: 100%;
    }

    .service-icon {
      width: 3rem;
      height: 3rem;
      border-radius: .75rem;
      background: rgba(16,185,129,.08);
      color: #059669;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      transition: background .3s ease;
    }

    .service-card:hover .service-icon {
      background: rgba(16,185,129,.15);
    }

    .step-item {
      position: relative;
      padding: 1.75rem;
      text-align: center;
      background: #fff;
      border: 1px solid #e2e8f0;
      border-radius: 1.5rem;
      box-shadow: var(--shadow-card);
      transition: all .3s ease;
    }

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

    .step-number {
      width: 2.5rem;
      height: 2.5rem;
      margin: 0 auto .75rem;
      border-radius: 50%;
      background: linear-gradient(135deg, #059669, #0d9488);
      color: #fff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: .95rem;
    }

    .faq-item {
      border: 1px solid #e2e8f0;
      border-radius: 1rem;
      background: #f8fafc;
      margin-bottom: .75rem;
      overflow: hidden;
      transition: all .3s ease;
    }

    .faq-item.open {
      border-color: #6ee7b7;
      background: #fff;
      box-shadow: var(--shadow-card);
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding: 1.1rem 1.25rem;
      cursor: pointer;
      font-size: .95rem;
      font-weight: 600;
      color: #0f172a;
    }

    .faq-icon {
      width: 1.75rem;
      height: 1.75rem;
      border-radius: 50%;
      background: rgba(16,185,129,.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #059669;
      font-size: .9rem;
      flex-shrink: 0;
      transition: transform .3s ease;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .35s ease;
      font-size: .9rem;
      color: #475569;
      line-height: 1.7;
      padding: 0 1.25rem;
    }

    .faq-item.open .faq-answer {
      max-height: 300px;
      padding-bottom: 1.1rem;
    }

    .footer-link {
      color: #94a3b8;
      transition: color .25s ease;
    }

    .footer-link:hover {
      color: #fff;
    }

    .cta-gradient {
      background: linear-gradient(135deg, #059669 0%, #0d9488 55%, #14b8a6 100%);
      border-radius: 1.75rem;
      padding: 2.5rem;
      position: relative;
      overflow: hidden;
    }

    .cta-gradient::after {
      content: '';
      position: absolute;
      right: -60px;
      top: -60px;
      width: 200px;
      height: 200px;
      border: 30px solid rgba(255,255,255,.08);
      border-radius: 50%;
    }

    .focus-ring:focus-visible {
      outline: none;
      box-shadow: 0 0 0 4px rgba(16,185,129,.3);
    }

    .mobile-drawer-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1.25rem;
      border-bottom: 1px solid #e2e8f0;
    }

/* roulang page: category2 */
:root {
            --primary: #059669;
            --primary-start: #10B981;
            --primary-end: #0D9488;
            --accent: #F97316;
            --ink: #1E293B;
            --body-bg: #F8FAFC;
            --card-border: #E2E8F0;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, .04);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, .10);
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--body-bg);
            color: var(--ink);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input,
        textarea,
        select {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, .8);
            transition: box-shadow .3s ease, background .3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(2, 6, 23, .06);
            background: rgba(255, 255, 255, .97);
        }
        .nav-link {
            padding: .5rem 1rem;
            border-radius: 9999px;
            font-size: .875rem;
            font-weight: 500;
            color: #475569;
            transition: all .25s ease;
            display: inline-flex;
            align-items: center;
        }
        .nav-link:hover {
            color: #047857;
            background: rgba(16, 185, 129, .08);
        }
        .nav-link.active {
            background: rgba(16, 185, 129, .10);
            color: #047857;
            font-weight: 600;
        }
        .nav-link:focus-visible,
        .footer-link:focus-visible,
        .btn-login:focus-visible,
        .btn-primary:focus-visible,
        .btn-outline:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(16, 185, 129, .25);
        }
        .btn-login {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 2.5rem;
            padding: 0 1.5rem;
            border-radius: 9999px;
            background: linear-gradient(135deg, var(--primary), var(--primary-end));
            color: #fff;
            font-size: .875rem;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(5, 150, 105, .20);
            transition: all .25s ease;
        }
        .btn-login:hover {
            box-shadow: 0 6px 16px rgba(5, 150, 105, .30);
            filter: brightness(1.08);
        }
        .mobile-menu-btn {
            transition: all .25s ease;
        }
        .mobile-menu-btn:hover {
            background: #F0FDF4 !important;
            border-color: #6EE7B7 !important;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: min(320px, 85vw);
            background: #F8FAFC;
            z-index: 100;
            transform: translateX(100%);
            transition: transform .35s ease;
            box-shadow: -12px 0 32px rgba(2, 6, 23, .15);
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, .5);
            z-index: 99;
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
        }
        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-link {
            display: flex;
            align-items: center;
            padding: .875rem 1.125rem;
            border-radius: .75rem;
            font-size: .9375rem;
            font-weight: 500;
            color: #334155;
            transition: all .2s ease;
        }
        .mobile-link:hover {
            background: rgba(16, 185, 129, .08);
            color: #047857;
        }
        .mobile-link.active {
            background: rgba(16, 185, 129, .10);
            color: #047857;
            font-weight: 600;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            padding: .875rem 1.75rem;
            border-radius: 9999px;
            background: linear-gradient(135deg, #059669, #0D9488);
            color: #fff;
            font-weight: 600;
            font-size: .9375rem;
            box-shadow: 0 4px 14px rgba(5, 150, 105, .22);
            transition: all .3s ease;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(5, 150, 105, .28);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            padding: .875rem 1.75rem;
            border-radius: 9999px;
            border: 2px solid #CBD5E1;
            color: #334155;
            font-weight: 500;
            font-size: .9375rem;
            transition: all .3s ease;
            background: transparent;
        }
        .btn-outline:hover {
            border-color: #059669;
            color: #047857;
            background: rgba(16, 185, 129, .04);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: .375rem;
            padding: .375rem .875rem;
            border-radius: 9999px;
            background: rgba(16, 185, 129, .10);
            color: #047857;
            font-size: .8125rem;
            font-weight: 600;
        }
        .section-tag {
            display: inline-block;
            padding: .375rem .75rem;
            border-radius: 9999px;
            background: rgba(16, 185, 129, .08);
            color: #047857;
            font-size: .8125rem;
            font-weight: 600;
            letter-spacing: .02em;
        }
        .section-tag.light {
            background: rgba(16, 185, 129, .15);
            color: #6EE7B7;
        }
        .gradient-text {
            background: linear-gradient(135deg, #059669, #0D9488);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: .08;
            pointer-events: none;
        }
        .hero-ring {
            position: absolute;
            border-radius: 9999px;
            border: 10px solid rgba(16, 185, 129, .08);
            pointer-events: none;
        }
        .service-card {
            position: relative;
            background: #fff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            transition: all .3s ease;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .service-card::before {
            content: "";
            display: block;
            height: 3px;
            width: 40px;
            border-radius: 9999px;
            background: linear-gradient(90deg, #10B981, #14B8A6);
            margin-bottom: 1.5rem;
            transition: width .4s ease;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: #6EE7B7;
        }
        .service-card:hover::before {
            width: 100%;
        }
        .service-icon {
            width: 3rem;
            height: 3rem;
            border-radius: .875rem;
            background: rgba(16, 185, 129, .08);
            color: #059669;
            display: grid;
            place-items: center;
            font-size: 1.25rem;
            margin-bottom: 1.25rem;
            transition: background .3s ease;
        }
        .service-card:hover .service-icon {
            background: rgba(16, 185, 129, .14);
        }
        .metric-card {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            transition: all .3s ease;
        }
        .metric-card:hover {
            background: rgba(255, 255, 255, .10);
            transform: translateY(-3px);
        }
        .step-item {
            position: relative;
            padding: 1.75rem;
            background: #fff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            transition: all .3s ease;
            height: 100%;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #6EE7B7;
        }
        .step-num {
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 9999px;
            background: linear-gradient(135deg, #059669, #0D9488);
            color: #fff;
            font-weight: 700;
            font-size: .9375rem;
            display: grid;
            place-items: center;
            margin-bottom: 1.25rem;
        }
        .faq-item {
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            background: #F8FAFC;
            transition: all .3s ease;
            overflow: hidden;
        }
        .faq-item.open {
            border-color: #6EE7B7;
            background: #fff;
            box-shadow: var(--shadow-card);
        }
        .faq-icon {
            width: 2rem;
            height: 2rem;
            flex-shrink: 0;
            display: grid;
            place-items: center;
            border-radius: 9999px;
            background: rgba(16, 185, 129, .10);
            color: #059669;
            font-size: .875rem;
            transition: transform .3s ease, background .3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            background: rgba(16, 185, 129, .18);
        }
        .cta-gradient {
            background: linear-gradient(135deg, #059669, #0D9488);
            position: relative;
            overflow: hidden;
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            padding: .875rem 1.75rem;
            border-radius: 9999px;
            background: #fff;
            color: #047857;
            font-weight: 600;
            font-size: .9375rem;
            transition: all .3s ease;
            box-shadow: 0 4px 14px rgba(0, 0, 0, .08);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .14);
        }
        .btn-ghost-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            padding: .875rem 1.75rem;
            border-radius: 9999px;
            border: 1.5px solid rgba(255, 255, 255, .5);
            color: #fff;
            font-weight: 600;
            font-size: .9375rem;
            transition: all .3s ease;
            background: transparent;
        }
        .btn-ghost-white:hover {
            background: rgba(255, 255, 255, .14);
            border-color: #fff;
        }
        .footer-link {
            transition: color .25s ease;
            color: #94A3B8;
        }
        .footer-link:hover {
            color: #fff;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 1rem;
            }
            .service-card {
                padding: 1.5rem;
            }
            .metric-card {
                padding: 1.25rem;
            }
            .step-item {
                padding: 1.5rem;
            }
        }
        @media (max-width: 1023px) {
            .desktop-nav {
                display: none;
            }
        }
        @media (min-width: 1024px) {
            .mobile-menu-btn,
            .mobile-drawer,
            .drawer-overlay {
                display: none;
            }
        }
        .feature-tick {
            display: inline-flex;
            align-items: center;
            gap: .375rem;
            padding: .375rem .875rem;
            border-radius: 9999px;
            background: rgba(255, 255, 255, .12);
            color: #A7F3D0;
            font-size: .8125rem;
            font-weight: 500;
        }
        .section-padding {
            padding: 4rem 0;
        }
        @media (min-width: 768px) {
            .section-padding {
                padding: 6rem 0;
            }
        }
        .stat-number {
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }