/* roulang page: index */
:root {
  --primary: #00E5A0;
  --primary-dark: #00C087;
  --night: #0B0E14;
  --night-card: #151A23;
  --gold: #F5B400;
  --soft: #F5F7FA;
  --ink: #1F2430;
  --muted: #5A6472;
  --line: #E6EAF0;
  --line-dark: #232B36;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 12px 36px rgba(15, 23, 42, 0.12);
  --container: 1200px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: #ffffff;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s ease; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: 15px; outline: none; }
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
/* ===== Header ===== */
.site-header {
  background: var(--night);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-top {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 16px;
  padding-bottom: 16px;
  flex-wrap: wrap;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #00a878);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--night);
  font-size: 18px;
  font-weight: 800;
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
}
.logo-text span { color: var(--primary); }
.header-search {
  flex: 1;
  max-width: 440px;
  margin: 0 auto;
  position: relative;
}
.header-search input {
  width: 100%;
  height: 42px;
  border-radius: 100px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  color: #fff;
  padding: 0 44px 0 18px;
  font-size: 14px;
  transition: all .25s ease;
}
.header-search input::placeholder { color: rgba(255,255,255,0.45); }
.header-search input:focus {
  background: #fff;
  color: var(--ink);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(0,229,160,0.18);
}
.header-search input:focus::placeholder { color: #a0a8b4; }
.header-search .search-icon {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  pointer-events: none;
  transition: color .25s;
}
.header-search input:focus ~ .search-icon { color: var(--primary); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.btn-login {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 20px;
  border-radius: 100px;
  background: var(--gold);
  color: var(--night);
  font-size: 14px;
  font-weight: 700;
  transition: all .25s ease;
}
.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245,180,0,0.3);
}
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  font-size: 18px;
  align-items: center;
  justify-content: center;
}
.nav-wrap {
  border-top: 1px solid rgba(255,255,255,0.05);
}
.main-nav {
  display: flex;
  gap: 8px;
  padding: 0 24px;
  overflow-x: auto;
}
.main-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 12px 18px;
  color: rgba(255,255,255,0.75);
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  transition: color .25s ease;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform .3s ease;
}
.main-nav a:hover,
.main-nav a.active { color: #fff; }
.main-nav a:hover::after,
.main-nav a.active::after { transform: scaleX(1); }
.main-nav a.active { color: var(--primary); }
/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11,14,20,0.95) 0%, rgba(11,14,20,0.72) 45%, rgba(11,14,20,0.45) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 72px;
  padding-bottom: 72px;
  max-width: 640px;
  margin-left: 0;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 100px;
  border: 1px solid rgba(245,180,0,0.5);
  color: var(--gold);
  font-size: 13px;
  font-weight: 600;
  background: rgba(245,180,0,0.08);
  letter-spacing: 0.3px;
  margin-bottom: 22px;
}
.hero-badge i { font-size: 12px; }
.hero h1 {
  font-size: 44px;
  line-height: 1.25;
  color: #fff;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.hero h1 span {
  color: var(--primary);
  position: relative;
}
.hero-desc {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 30px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: var(--night);
  font-size: 15px;
  font-weight: 700;
  transition: all .25s ease;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0,229,160,0.3);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 30px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.35);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  background: rgba(255,255,255,0.06);
  transition: all .25s ease;
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.6);
  transform: translateY(-2px);
}
/* ===== Section base ===== */
.section {
  padding-top: 84px;
  padding-bottom: 84px;
}
.section-light { background: var(--soft); }
.section-dark { background: var(--night); color: #fff; }
.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--primary);
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 10px;
}
.section-dark .section-tag { color: var(--primary); }
.section-title {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 12px;
}
.section-dark .section-title { color: #fff; }
.section-desc {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.7;
}
.section-dark .section-desc { color: rgba(255,255,255,0.65); }
/* ===== Services ===== */
.service-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all .3s ease;
  box-shadow: var(--shadow);
}
.service-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.service-card .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0,229,160,0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
}
.service-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}
.service-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 16px;
  flex-grow: 1;
}
.service-card .link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--night);
  transition: all .25s ease;
}
.service-card:hover .link-more { color: var(--primary); }
.service-card .link-more i { transition: transform .25s; }
.service-card:hover .link-more i { transform: translateX(4px); }
/* ===== Stats ===== */
.stats-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat-cell {
  padding: 40px 32px;
  border-left: 1px solid var(--line-dark);
  text-align: center;
}
.stat-cell:first-child { border-left: none; }
.stat-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-cell:nth-child(3) .stat-num { color: var(--gold); }
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.5px;
}
/* ===== News list ===== */
.news-card {
  display: flex;
  align-items: center;
  gap: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 14px;
  transition: all .28s ease;
  box-shadow: 0 2px 10px rgba(15,23,42,0.03);
}
.news-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateX(6px);
}
.news-main { flex: 1; min-width: 0; }
.news-main h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color .25s ease;
}
.news-card:hover .news-main h3 { color: var(--primary); }
.news-main p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-side {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.news-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(0,229,160,0.12);
  color: #00996b;
  font-size: 12px;
  font-weight: 600;
}
.news-time {
  font-size: 13px;
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
}
.news-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 13px;
  transition: all .25s ease;
}
.news-card:hover .news-arrow {
  background: var(--primary);
  color: var(--night);
}
.empty-state {
  background: #fff;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 56px 24px;
  text-align: center;
}
.empty-state i {
  font-size: 36px;
  color: #c8d0da;
  margin-bottom: 12px;
}
.empty-state p { font-size: 15px; color: var(--muted); }
/* ===== Cases ===== */
.case-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 64px;
}
.case-row:last-child { margin-bottom: 0; }
.case-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
}
.case-img img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  transition: transform .6s ease;
}
.case-row:hover .case-img img { transform: scale(1.03); }
.case-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(11,14,20,0.35), transparent 50%);
}
.case-text .case-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: inline-block;
}
.case-text h3 {
  font-size: 26px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 14px;
  line-height: 1.35;
}
.case-text p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 20px;
}
.case-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--night);
  border-bottom: 2px solid var(--primary);
  padding-bottom: 3px;
  transition: all .25s ease;
}
.case-link:hover { color: var(--primary); gap: 12px; }
/* ===== Solutions ===== */
.solution-row {
  display: grid;
  grid-template-columns: 80px 1fr 1.2fr 40px;
  align-items: center;
  gap: 20px;
  padding: 28px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  margin-bottom: 14px;
  transition: all .28s ease;
}
.solution-row:hover {
  background: var(--night);
  border-color: var(--night);
  transform: translateX(6px);
}
.solution-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  background: rgba(0,229,160,0.1);
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .28s ease;
}
.solution-row:hover .solution-num {
  background: var(--primary);
  color: var(--night);
}
.solution-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  transition: color .28s;
}
.solution-row:hover .solution-title { color: #fff; }
.solution-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  transition: color .28s;
}
.solution-row:hover .solution-desc { color: rgba(255,255,255,0.65); }
.solution-arrow {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: all .28s ease;
}
.solution-row:hover .solution-arrow {
  border-color: var(--primary);
  color: var(--primary);
  transform: rotate(-45deg);
}
/* ===== FAQ ===== */
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: all .3s ease;
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  text-align: left;
  transition: color .25s;
}
.faq-item.active .faq-q { color: var(--primary); }
.faq-q .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--soft);
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
  transition: all .35s ease;
}
.faq-item.active .faq-icon {
  background: var(--primary);
  color: var(--night);
  transform: rotate(180deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-a-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}
/* ===== CTA ===== */
.cta-band {
  position: relative;
  background: var(--night);
  padding: 80px 24px;
  text-align: center;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(0,229,160,0.15), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(245,180,0,0.12), transparent 35%),
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 34px 34px, 34px 34px;
  pointer-events: none;
}
.cta-band .container { position: relative; z-index: 2; }
.cta-band h2 {
  font-size: 34px;
  color: #fff;
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-band p {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 30px;
}
/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: start;
}
.contact-info h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 16px;
}
.contact-info > p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 24px;
}
.contact-items {
  list-style: none;
}
.contact-items li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--ink);
}
.contact-items li:last-child { border-bottom: none; }
.contact-items li i {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(0,229,160,0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  margin-top: 2px;
}
.contact-items li .item-text { line-height: 1.6; }
.contact-items li .item-text b { display: block; font-weight: 700; margin-bottom: 2px; }
.form-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 32px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 7px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  font-size: 14px;
  color: var(--ink);
  background: var(--soft);
  transition: all .25s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(0,229,160,0.14);
}
.form-group textarea { resize: vertical; min-height: 100px; }
/* ===== Footer ===== */
.site-footer {
  background: var(--night);
  color: rgba(255,255,255,0.65);
  padding-top: 64px;
  padding-bottom: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  transition: all .25s ease;
}
.footer-col a:hover { color: var(--primary); padding-left: 4px; }
.footer-col p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 6px;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 24px 24px;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
}
.footer-bottom .sep { display: inline-block; margin: 0 8px; opacity: 0.3; }
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .stats-cols { grid-template-columns: repeat(2, 1fr); }
  .stat-cell { border-left: none; border-top: 1px solid var(--line-dark); padding: 28px 16px; }
  .stat-cell:nth-child(-n+2) { border-top: none; }
  .solution-row { grid-template-columns: 64px 1fr 40px; }
  .solution-desc { display: none; }
}
@media (max-width: 768px) {
  .section { padding-top: 56px; padding-bottom: 56px; }
  .hero { min-height: 480px; }
  .hero h1 { font-size: 32px; }
  .menu-toggle { display: flex; }
  .main-nav {
    display: none;
    flex-direction: column;
    padding: 8px 24px 16px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
  .main-nav a::after { display: none; }
  .header-top { gap: 12px; }
  .header-search { order: 3; max-width: none; flex-basis: 100%; }
  .case-row { grid-template-columns: 1fr; gap: 28px; margin-bottom: 48px; }
  .case-img img { height: 240px; }
  .case-text h3 { font-size: 22px; }
  .news-card { flex-direction: column; align-items: flex-start; gap: 12px; padding: 20px; }
  .news-side { width: 100%; justify-content: space-between; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section-title { font-size: 24px; }
  .cta-band h2 { font-size: 26px; }
  .solution-row { grid-template-columns: 52px 1fr 32px; padding: 20px; }
  .solution-num { width: 44px; height: 44px; font-size: 20px; }
  .stat-num { font-size: 30px; }
}
@media (max-width: 520px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .hero { min-height: 420px; }
  .hero h1 { font-size: 27px; }
  .hero-desc { font-size: 14px; }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary { width: 100%; }
  .btn-login { padding: 0 14px; font-size: 13px; }
  .logo-text { font-size: 17px; }
  .nav-wrap { overflow: visible; }
  .stats-cols { grid-template-columns: 1fr; }
  .stat-cell { border-top: 1px solid var(--line-dark); border-left: none; }
  .stat-cell:first-child { border-top: none; }
}

/* roulang page: category1 */
:root {
            --color-primary: #00E5A0;
            --color-primary-dark: #00C78A;
            --color-dark: #0B0E14;
            --color-dark-card: #151A23;
            --color-light: #F5F7FA;
            --color-amber: #F5B400;
            --color-text: #1F2430;
            --color-text-gray: #5A6472;
            --color-border: #E6EAF0;
            --color-border-dark: #232B36;
            --radius-card: 16px;
            --radius-btn: 8px;
            --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.08);
            --shadow-hover: 0 12px 32px rgba(15, 23, 42, 0.12);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
        }
        *,
        *::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(--color-text);
            background: #ffffff;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Header ===== */
        .site-header {
            background: var(--color-dark);
            position: sticky;
            top: 0;
            z-index: 50;
            border-bottom: 1px solid var(--color-border-dark);
        }
        .header-inner {
            display: flex;
            align-items: center;
            gap: 24px;
            padding-top: 16px;
            padding-bottom: 10px;
            flex-wrap: wrap;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, #00E5A0, #00C78A);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0E14;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(0, 229, 160, 0.3);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .logo-text span {
            color: var(--color-primary);
            font-weight: 700;
        }
        .search-wrap {
            flex: 1 1 100%;
            order: 3;
            margin-top: 4px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: #F0F2F5;
            border-radius: 999px;
            padding: 8px 18px;
            gap: 10px;
            transition: background .2s, box-shadow .2s;
        }
        .search-box:focus-within {
            background: #ffffff;
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.35);
        }
        .search-box svg {
            width: 18px;
            height: 18px;
            fill: #5A6472;
            flex-shrink: 0;
        }
        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            width: 100%;
            font-size: 14px;
            color: var(--color-text);
        }
        .search-box input::placeholder {
            color: #9AA3AF;
        }
        .menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--color-border-dark);
            border-radius: 8px;
            width: 40px;
            height: 40px;
            color: #ffffff;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background .2s;
            margin-left: auto;
            flex-shrink: 0;
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .main-nav {
            display: flex;
            gap: 6px;
            padding-top: 4px;
            padding-bottom: 12px;
            flex-wrap: wrap;
        }
        .main-nav a {
            position: relative;
            padding: 6px 14px;
            font-size: 15px;
            font-weight: 500;
            color: #AAB4C0;
            border-radius: 6px;
            transition: color .2s, background .2s;
        }
        .main-nav a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--color-primary);
        }

        /* ===== Hero ===== */
        .cat-hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 96px 0 84px;
            color: #ffffff;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(11, 14, 20, 0.94) 30%, rgba(11, 14, 20, 0.72) 70%, rgba(11, 14, 20, 0.55) 100%);
        }
        .cat-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(245, 180, 0, 0.6);
            color: var(--color-amber);
            background: rgba(245, 180, 0, 0.08);
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .cat-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .cat-hero h1 .text-primary {
            color: var(--color-primary);
        }
        .cat-hero p.lead {
            font-size: 18px;
            color: #D3DBE3;
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-primary);
            color: #0B0E14;
            font-weight: 700;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: transform .2s, box-shadow .2s, background .2s;
            font-size: 15px;
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 229, 160, 0.3);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #ffffff;
            background: rgba(255, 255, 255, 0.04);
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: background .2s, border-color .2s, transform .2s;
            font-size: 15px;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
            transform: translateY(-2px);
        }

        /* ===== Section common ===== */
        .section {
            padding: 80px 0;
        }
        .section-light {
            background: var(--color-light);
        }
        .section-white {
            background: #ffffff;
        }
        .section-dark {
            background: var(--color-dark);
            color: #ffffff;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--color-primary);
            margin-bottom: 8px;
            font-family: var(--font-mono);
        }
        .section-label.amber {
            color: var(--color-amber);
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .section-sub {
            font-size: 16px;
            color: var(--color-text-gray);
            max-width: 720px;
            line-height: 1.75;
        }
        .section-dark .section-sub {
            color: #AAB4C0;
        }
        .section-head {
            margin-bottom: 48px;
        }

        /* ===== Cards grid ===== */
        .offer-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }
        .offer-card {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: transform .25s, box-shadow .25s, border-color .25s;
            position: relative;
        }
        .offer-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }
        .offer-card .icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 229, 160, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 20px;
            margin-bottom: 18px;
        }
        .offer-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .offer-card p {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .offer-card .link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            transition: color .2s, gap .2s;
        }
        .offer-card .link-arrow i {
            font-size: 12px;
            transition: transform .2s;
        }
        .offer-card:hover .link-arrow {
            color: var(--color-primary);
            gap: 10px;
        }
        .offer-card.span-7 {
            grid-column: span 7;
        }
        .offer-card.span-5 {
            grid-column: span 5;
        }
        .offer-card.span-4 {
            grid-column: span 4;
        }
        .offer-card.span-12 {
            grid-column: span 12;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .step-item {
            position: relative;
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            padding: 30px 24px;
            background: var(--color-dark-card);
            transition: border-color .25s, transform .25s;
        }
        .step-item:hover {
            border-color: var(--color-primary);
            transform: translateY(-4px);
        }
        .step-num {
            font-family: var(--font-mono);
            font-size: 40px;
            font-weight: 800;
            color: rgba(0, 229, 160, 0.35);
            line-height: 1;
            margin-bottom: 16px;
        }
        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: #AAB4C0;
            line-height: 1.7;
        }
        .step-item .step-icon {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 36px;
            height: 36px;
            background: rgba(0, 229, 160, 0.1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 16px;
        }

        /* ===== Cover cards ===== */
        .cover-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .cover-card {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform .25s, box-shadow .25s;
        }
        .cover-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .cover-card .cover-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #E8ECF1;
        }
        .cover-card .cover-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }
        .cover-card:hover .cover-img img {
            transform: scale(1.04);
        }
        .cover-card .cover-body {
            padding: 20px 22px 24px;
        }
        .cover-card .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primaryDark);
            background: rgba(0, 229, 160, 0.1);
            padding: 3px 10px;
            border-radius: 999px;
            margin-bottom: 10px;
        }
        .cover-card h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 6px;
        }
        .cover-card p {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.65;
        }

        /* ===== Feature rows ===== */
        .feature-list {
            margin-top: 40px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .feature-row {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 22px 26px;
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: 14px;
            transition: border-color .2s, box-shadow .2s, transform .2s;
        }
        .feature-row:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-card);
            transform: translateX(4px);
        }
        .feature-row .f-icon {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            border-radius: 10px;
            background: rgba(0, 229, 160, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 18px;
        }
        .feature-row .f-content {
            flex: 1;
        }
        .feature-row .f-content h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .feature-row .f-content p {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.6;
        }
        .feature-row .f-arrow {
            color: #C2CAD4;
            font-size: 14px;
            transition: color .2s, transform .2s;
        }
        .feature-row:hover .f-arrow {
            color: var(--color-primary);
            transform: translateX(3px);
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 36px auto 0;
        }
        .faq-item {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: 14px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .2s, box-shadow .2s;
        }
        .faq-item.open {
            border-color: var(--color-primary);
            box-shadow: 0 4px 16px rgba(0, 229, 160, 0.08);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: background .2s;
        }
        .faq-question:hover {
            background: #FAFBFC;
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 13px;
            transition: transform .25s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer p {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--color-text-gray);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            padding: 90px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 14, 20, 0.88);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .cta-section p {
            color: #B6C0CB;
            font-size: 17px;
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-dark);
            color: #AAB4C0;
            padding: 64px 0 24px;
            border-top: 1px solid var(--color-border-dark);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 44px;
        }
        .footer-brand .logo-text {
            font-size: 22px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 16px;
            color: #8C96A3;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 16px;
            color: #ffffff;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: #8C96A3;
            margin-bottom: 10px;
            transition: color .2s;
        }
        .footer-col a:hover {
            color: var(--color-primary);
        }
        .footer-col p {
            font-size: 14px;
            color: #8C96A3;
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border-dark);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #6B7684;
        }

        /* ===== Responsive ===== */
        @media (min-width: 768px) {
            .header-inner {
                flex-wrap: nowrap;
            }
            .search-wrap {
                flex: 0 1 420px;
                order: 0;
                margin-top: 0;
                margin-left: auto;
                margin-right: auto;
            }
            .menu-toggle {
                display: none;
            }
        }
        @media (max-width: 767px) {
            .main-nav {
                display: none;
                flex-direction: column;
                padding-bottom: 16px;
            }
            .main-nav.open {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .header-inner {
                padding-bottom: 12px;
            }
            .cat-hero {
                padding: 64px 0 56px;
            }
            .cat-hero h1 {
                font-size: 32px;
            }
            .cat-hero p.lead {
                font-size: 16px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .offer-grid {
                grid-template-columns: 1fr;
            }
            .offer-card.span-7,
            .offer-card.span-5,
            .offer-card.span-4 {
                grid-column: span 1;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .cover-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .logo-text {
                font-size: 18px;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
            }
            .hero-actions,
            .cta-actions {
                flex-direction: column;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 16px;
            }
            .faq-answer p {
                padding: 0 16px 18px;
            }
            .feature-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 18px;
            }
            .feature-row .f-arrow {
                transform: rotate(90deg);
            }
            .feature-row:hover .f-arrow {
                transform: rotate(90deg) translateY(3px);
            }
        }

/* roulang page: category2 */
:root {
  --primary: #00E5A0;
  --primary-dark: #00C085;
  --dark: #0B0E14;
  --dark-card: #151A23;
  --accent: #F5B400;
  --light: #F5F7FA;
  --white: #FFFFFF;
  --text-main: #1F2430;
  --text-sub: #5A6472;
  --text-rev: #FFFFFF;
  --text-rev-sub: #AAB4C0;
  --border-light: #E6EAF0;
  --border-dark: #232B36;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.14);
  --space-section: 96px;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--dark);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 16px;
  padding-bottom: 12px;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), #00b87c);
  color: #07211a;
  font-size: 18px;
  box-shadow: 0 0 0 4px rgba(0, 229, 160, 0.12);
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: .5px;
}
.logo-text span { color: var(--primary); }
.header-search {
  display: flex;
  align-items: center;
  background: #1b212d;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 9px 18px;
  width: 420px;
  max-width: 100%;
  transition: all .25s ease;
}
.header-search:focus-within {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.25);
}
.header-search .search-icon { color: #7d8898; margin-right: 10px; font-size: 14px; }
.header-search .search-input {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  font-size: 14px;
  color: var(--text-main);
}
.header-search .search-input::placeholder { color: #8a94a3; }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 10px;
  background: transparent;
  padding: 0 10px;
}
.nav-toggle span { display: block; height: 2px; background: var(--white); border-radius: 2px; transition: all .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 12px;
  overflow-x: auto;
}
.main-nav a {
  position: relative;
  display: inline-block;
  padding: 7px 16px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--text-rev-sub);
  white-space: nowrap;
  transition: all .2s;
}
.main-nav a:hover { color: var(--primary); background: rgba(255, 255, 255, 0.045); }
.main-nav a.active { color: var(--primary); font-weight: 600; background: rgba(0, 229, 160, 0.10); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 26px;
  border: 1px solid transparent;
  transition: all .25s ease;
}
.btn-primary { background: var(--primary); color: #063d2a; box-shadow: 0 4px 14px rgba(0, 229, 160, 0.24); }
.btn-primary:hover { background: #00f5ac; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 229, 160, 0.32); }
.btn-outline-light { border: 1px solid rgba(255, 255, 255, 0.28); color: var(--white); background: rgba(255, 255, 255, 0.04); }
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.12); border-color: rgba(255, 255, 255, 0.5); transform: translateY(-2px); }
.btn-outline { border: 1px solid var(--border-light); color: var(--text-main); background: var(--white); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary-dark); background: #f0fdf8; transform: translateY(-2px); }

/* ===== Sections ===== */
.section { padding: var(--space-section) 0; }
.section-white { background: var(--white); }
.section-light { background: var(--light); }
.section-dark { background: var(--dark); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--primary);
  background: rgba(0, 229, 160, 0.10);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.section-head h2 { font-size: 32px; line-height: 1.3; margin: 8px 0 14px; color: var(--text-main); font-weight: 700; }
.section-head p { font-size: 16px; color: var(--text-sub); line-height: 1.7; }
.section-light .section-head h2 { color: var(--text-main); }
.section-dark .section-head h2 { color: var(--white); }
.section-dark .section-head p { color: var(--text-rev-sub); }

/* ===== Category Banner ===== */
.cat-banner {
  position: relative;
  background: var(--dark);
  padding: 92px 0 100px;
  overflow: hidden;
}
.banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .6;
}
.banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(11, 14, 20, 0.97) 16%, rgba(11, 14, 20, 0.82) 58%, rgba(0, 229, 160, 0.18) 100%);
}
.cat-banner-inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
}
.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--accent);
  border: 1px solid rgba(245, 180, 0, 0.4);
  background: rgba(245, 180, 0, 0.08);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.cat-banner h1 {
  font-size: 44px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--white);
  margin: 0 0 18px;
}
.cat-banner h1 em { color: var(--primary); font-style: normal; }
.cat-banner p { font-size: 17px; color: var(--text-rev-sub); line-height: 1.7; margin: 0 0 32px; max-width: 620px; }
.banner-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.banner-trust {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 40px;
  font-size: 13px;
  color: #7d8898;
}
.banner-trust i { color: var(--primary); }

/* ===== Overview ===== */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.overview-media { border-radius: 20px; overflow: hidden; box-shadow: var(--shadow-lg); }
.overview-media img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
.overview-content h2 { font-size: 30px; line-height: 1.35; margin: 10px 0 18px; font-weight: 700; color: var(--text-main); }
.overview-content p { color: var(--text-sub); font-size: 16px; line-height: 1.8; margin-bottom: 24px; }
.overview-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.overview-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 14px 18px;
  box-shadow: var(--shadow-sm);
  transition: all .25s;
}
.overview-list li:hover { border-color: rgba(0, 229, 160, 0.55); box-shadow: var(--shadow-md); }
.overview-list i {
  color: var(--primary);
  font-size: 16px;
  margin-top: 4px;
}
.overview-list b { display: block; font-size: 15px; color: var(--text-main); margin-bottom: 2px; }
.overview-list span { font-size: 14px; color: var(--text-sub); }

/* ===== Feature Cards ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.feature-card:hover { transform: translateY(-6px); border-color: rgba(0, 229, 160, 0.6); box-shadow: var(--shadow-lg); }
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), #00b87c);
  opacity: 0;
  transition: opacity .3s;
}
.feature-card:hover::before { opacity: 1; }
.feature-card:first-child { grid-column: span 2; }
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 229, 160, 0.12);
  color: var(--primary-dark);
  font-size: 20px;
  margin-bottom: 20px;
}
.feature-card h3 { font-size: 20px; font-weight: 700; color: var(--text-main); margin: 0 0 10px; }
.feature-card p { font-size: 15px; color: var(--text-sub); line-height: 1.75; margin: 0; }
.feature-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-dark);
}
.feature-more i { transition: transform .2s; }
.feature-card:hover .feature-more i { transform: translateX(4px); }

/* ===== Steps ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 16px;
}
.step-item {
  background: var(--dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: 32px 26px;
  position: relative;
  transition: all .3s;
}
.step-item:hover { border-color: rgba(0, 229, 160, 0.45); transform: translateY(-4px); }
.step-item::after {
  content: '';
  position: absolute;
  top: 46px;
  right: -13px;
  width: 24px;
  height: 24px;
  border-top: 2px solid rgba(0, 229, 160, 0.35);
  border-right: 2px solid rgba(0, 229, 160, 0.35);
  transform: rotate(45deg);
  display: none;
}
.step-item:last-child::after { display: none; }
.step-num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 18px;
  display: block;
}
.step-item h3 { font-size: 18px; font-weight: 700; color: var(--white); margin: 0 0 10px; }
.step-item p { font-size: 14px; color: var(--text-rev-sub); line-height: 1.7; margin: 0; }

/* ===== FAQ ===== */
.faq-list { max-width: 840px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all .25s;
}
.faq-item.active { border-color: rgba(0, 229, 160, 0.55); box-shadow: var(--shadow-md); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: transparent;
  border: none;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  transition: all .2s;
}
.faq-question:hover { color: var(--primary-dark); }
.faq-question i { color: var(--primary); transition: transform .35s; flex-shrink: 0; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p {
  margin: 0;
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  background: var(--dark);
  padding: 88px 0;
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -120px; right: -80px;
  width: 340px; height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 160, 0.16), transparent 70%);
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -140px; left: -80px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 180, 0, 0.10), transparent 70%);
}
.cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
.cta-content h2 { font-size: 34px; color: var(--white); margin: 0 0 16px; font-weight: 800; line-height: 1.3; }
.cta-content h2 em { color: var(--primary); font-style: normal; }
.cta-content p { font-size: 16px; color: var(--text-rev-sub); line-height: 1.7; margin: 0 0 32px; }
.cta-content .btn { margin: 0 6px; }

/* ===== Footer ===== */
.site-footer { background: var(--dark); color: var(--text-rev-sub); padding: 64px 0 0; border-top: 1px solid rgba(255,255,255,0.06); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: #7d8898; margin: 0; max-width: 380px; }
.footer-col h4 { color: var(--white); font-size: 16px; font-weight: 600; margin: 0 0 18px; }
.footer-col a {
  display: block;
  font-size: 14px;
  color: #7d8898;
  padding: 5px 0;
  transition: all .2s;
}
.footer-col a:hover { color: var(--primary); padding-left: 4px; }
.footer-col p { font-size: 14px; color: #7d8898; line-height: 1.7; margin: 0 0 10px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-bottom p { font-size: 13px; color: #566271; margin: 0; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-card:first-child { grid-column: span 2; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
  .step-item::after { display: none; }
  .overview-grid { gap: 36px; }
}
@media (max-width: 768px) {
  :root { --space-section: 64px; }
  .header-inner { flex-wrap: wrap; }
  .header-search { order: 3; width: 100%; }
  .nav-toggle { display: flex; }
  .main-nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 0 24px 18px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { text-align: left; padding: 12px 14px; }
  .cat-banner { padding: 64px 0 72px; }
  .cat-banner h1 { font-size: 30px; }
  .cat-banner p { font-size: 15px; }
  .overview-grid { grid-template-columns: 1fr; }
  .overview-media img { min-height: 240px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card:first-child { grid-column: span 1; }
  .section-head h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-content h2 { font-size: 26px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-inner { gap: 12px; }
  .logo-text { font-size: 18px; }
  .banner-actions .btn { width: 100%; }
  .steps-grid { grid-template-columns: 1fr; }
  .faq-question { font-size: 15px; padding: 18px 18px; }
  .faq-answer p { padding: 0 18px 18px; }
  .feature-card { padding: 24px 20px; }
  .section { --space-section: 52px; }
  .section-head { margin-bottom: 36px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: article */
:root {
            --primary: #00E5A0;
            --primary-dark: #00B87A;
            --accent: #F5B400;
            --bg-dark: #0B0E14;
            --bg-dark-2: #151A23;
            --bg-light: #F5F7FA;
            --card-bg: #FFFFFF;
            --text-main: #1F2430;
            --text-sub: #5A6472;
            --text-invert: #FFFFFF;
            --text-mute-invert: #AAB4C0;
            --border-light: #E6EAF0;
            --border-dark: #232B36;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, .05);
            --shadow-lg: 0 14px 40px rgba(15, 23, 42, .1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s, border-color .25s, background-color .25s, box-shadow .25s, transform .25s;
        }

        button,
        input,
        select,
        textarea {
            font: inherit;
            outline: none;
        }

        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            color: inherit;
        }

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

        /* Header */
        .site-header {
            background: var(--bg-dark);
            color: #FFFFFF;
            position: relative;
            z-index: 50;
            box-shadow: 0 1px 0 rgba(255, 255, 255, .06);
        }

        .header-top {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 14px 0 12px;
        }

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

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #00B87A);
            color: #06281C;
            display: grid;
            place-items: center;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(0, 229, 160, .3);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: .01em;
            line-height: 1.2;
        }

        .logo-text span {
            color: var(--primary);
        }

        .search-box {
            flex: 1;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
        }

        .search-box input {
            width: 100%;
            height: 46px;
            border: 2px solid transparent;
            background: #F0F2F5;
            color: var(--text-main);
            border-radius: 999px;
            padding: 0 46px 0 18px;
            font-size: 14px;
            transition: background .3s, border-color .3s, box-shadow .3s;
        }

        .search-box input::placeholder {
            color: #9AA3AF;
        }

        .search-box input:focus {
            background: #FFFFFF;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(0, 229, 160, .15);
        }

        .search-box button {
            position: absolute;
            right: 5px;
            top: 50%;
            transform: translateY(-50%);
            width: 38px;
            height: 38px;
            border: none;
            background: transparent;
            color: var(--text-sub);
            border-radius: 50%;
            cursor: pointer;
            transition: background .3s, color .3s;
        }

        .search-box button:hover {
            background: rgba(0, 229, 160, .12);
            color: var(--primary-dark);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            background: none;
            border: none;
            padding: 10px 8px;
            cursor: pointer;
        }

        .menu-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 4px;
            transition: opacity .3s, transform .3s;
        }

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

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

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

        .main-nav {
            display: flex;
            justify-content: center;
            gap: 40px;
            border-top: 1px solid rgba(255, 255, 255, .06);
        }

        .main-nav a {
            position: relative;
            display: block;
            padding: 13px 4px 12px;
            color: var(--text-mute-invert);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: .02em;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            right: 100%;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            transition: right .3s ease;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: #FFFFFF;
        }

        .main-nav a:hover::after,
        .main-nav a.active::after {
            right: 0;
        }

        /* Page banner */
        .page-banner {
            position: relative;
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            color: #FFFFFF;
            padding: 72px 0 64px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 14, 20, .96) 0%, rgba(11, 14, 20, .82) 55%, rgba(11, 14, 20, .6) 100%);
        }

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

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-mute-invert);
        }

        .breadcrumb a {
            color: var(--text-mute-invert);
            transition: color .25s;
        }

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

        .breadcrumb i {
            font-size: 11px;
            color: rgba(255, 255, 255, .35);
        }

        .breadcrumb span {
            color: rgba(255, 255, 255, .75);
            font-weight: 500;
        }

        .article-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -.02em;
            max-width: 880px;
            margin: 22px 0 20px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 22px;
            font-size: 14px;
            color: var(--text-mute-invert);
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .article-meta i {
            color: var(--primary);
            font-size: 15px;
        }

        /* Article layout */
        .article-layout {
            background: var(--bg-light);
            padding: 56px 0 72px;
        }

        .article-main {
            max-width: 860px;
            margin: 0 auto;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 48px 52px;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.85;
            color: #2A3040;
        }

        .article-body p {
            margin-bottom: 20px;
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 800;
            margin: 38px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 28px 0 12px;
        }

        .article-body a {
            color: var(--primary-dark);
            border-bottom: 1px solid transparent;
        }

        .article-body a:hover {
            border-bottom-color: var(--primary-dark);
        }

        .article-body blockquote {
            margin: 24px 0;
            padding: 16px 20px;
            border-left: 4px solid var(--primary);
            border-radius: 0 10px 10px 0;
            background: linear-gradient(135deg, rgba(0, 229, 160, .08), rgba(0, 229, 160, .02));
            color: #2F5E4F;
            font-size: 15px;
            line-height: 1.75;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 20px;
            padding-left: 22px;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body li {
            margin-bottom: 6px;
        }

        .article-body li::marker {
            color: var(--primary);
        }

        /* Tag list */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding: 30px 0 24px;
            border-top: 1px solid var(--border-light);
            margin-top: 36px;
        }

        .tag {
            padding: 7px 16px;
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            font-size: 13px;
            color: var(--text-sub);
            transition: all .25s;
        }

        .tag:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            background: rgba(0, 229, 160, .05);
        }

        /* Prev / Next */
        .prev-next {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            padding-top: 8px;
        }

        .pn-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 18px 20px;
            background: var(--bg-light);
            transition: all .3s;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .pn-item:hover {
            border-color: var(--primary);
            background: #FFFFFF;
            box-shadow: var(--shadow-sm);
        }

        .pn-next {
            text-align: right;
        }

        .pn-label {
            font-size: 12px;
            color: var(--text-sub);
            letter-spacing: .08em;
            font-weight: 600;
        }

        .pn-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.5;
        }

        .pn-item:hover .pn-title {
            color: var(--primary-dark);
        }

        /* Not found */
        .not-found {
            text-align: center;
            padding: 48px 24px;
        }

        .not-found i {
            font-size: 42px;
            color: #C4CDD6;
            margin-bottom: 16px;
        }

        .not-found p {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-sub);
            margin-bottom: 20px;
        }

        /* Related */
        .related-section {
            background: #FFFFFF;
            padding: 72px 0 80px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .05em;
            color: var(--primary-dark);
            text-transform: uppercase;
        }

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

        .section-title {
            font-size: 32px;
            font-weight: 800;
            margin-top: 8px;
            letter-spacing: -.02em;
        }

        .section-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-sub);
            padding: 8px 4px;
            border-bottom: 1px solid transparent;
        }

        .section-more:hover {
            color: var(--primary-dark);
            border-bottom-color: var(--primary);
        }

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

        .rcard {
            position: relative;
            display: block;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            background: #FFFFFF;
            transition: transform .35s, box-shadow .35s, border-color .35s;
        }

        .rcard:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }

        .rcard-img {
            position: relative;
            overflow: hidden;
            background: #e8ecf2;
            aspect-ratio: 16 / 10;
        }

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

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

        .rcard-body {
            padding: 22px 22px 24px;
        }

        .rcard-cat {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(0, 229, 160, .1);
            color: #00855C;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .04em;
            margin-bottom: 12px;
        }

        .rcard h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .rcard:hover h3 {
            color: var(--primary-dark);
        }

        .rcard p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .rcard-link {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .rcard-link i {
            transition: transform .3s;
        }

        .rcard:hover .rcard-link i {
            transform: translateX(4px);
        }

        /* CTA */
        .cta-section {
            position: relative;
            background: var(--bg-dark) url('/assets/images/backpic/back-3.png') center / cover no-repeat;
            color: #FFFFFF;
            padding: 76px 0;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(11, 14, 20, .92), rgba(11, 14, 20, .78));
        }

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

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -.01em;
        }

        .cta-section p {
            margin: 14px auto 0;
            max-width: 520px;
            font-size: 16px;
            color: rgba(255, 255, 255, .72);
            line-height: 1.75;
        }

        .cta-btns {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 30px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 24px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 700;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .3s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #06281C;
            box-shadow: 0 4px 14px rgba(0, 229, 160, .24);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 229, 160, .3);
        }

        .btn-lg {
            padding: 14px 34px;
            font-size: 17px;
            border-radius: 12px;
        }

        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, .5);
            color: #FFFFFF;
        }

        .btn-outline-light:hover {
            border-color: #FFFFFF;
            background: rgba(255, 255, 255, .12);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: #FFFFFF;
            padding: 56px 0 0;
        }

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

        .footer-brand p {
            margin-top: 16px;
            font-size: 14px;
            color: var(--text-mute-invert);
            line-height: 1.7;
            max-width: 380px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 18px;
            letter-spacing: .02em;
        }

        .footer-col a {
            display: block;
            color: var(--text-mute-invert);
            font-size: 14px;
            padding: 6px 0;
        }

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

        .footer-col p {
            color: var(--text-mute-invert);
            font-size: 14px;
            padding: 4px 0;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 18px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, .42);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

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

        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
                gap: 12px;
            }

            .search-box {
                order: 3;
                flex-basis: 100%;
                max-width: none;
            }

            .menu-toggle {
                display: flex;
                margin-left: auto;
            }

            .main-nav {
                display: none;
                flex-direction: column;
                gap: 0;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                padding: 13px 8px;
                border-top: 1px solid rgba(255, 255, 255, .05);
            }

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

            .page-banner {
                padding: 48px 0 40px;
            }

            .article-title {
                font-size: 30px;
            }

            .article-main {
                padding: 28px 22px;
                border-radius: 12px;
            }

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

            .article-body h2 {
                font-size: 21px;
            }

            .article-layout {
                padding: 36px 0 48px;
            }

            .related-section {
                padding: 48px 0 56px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .prev-next {
                grid-template-columns: 1fr;
            }

            .pn-next {
                text-align: left;
            }

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

            .cta-section h2 {
                font-size: 27px;
            }

            .section-title {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .header-top {
                padding-top: 12px;
            }

            .logo-text {
                font-size: 18px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }

            .article-title {
                font-size: 26px;
            }

            .article-meta {
                flex-direction: column;
                gap: 10px;
            }

            .btn-lg {
                width: 100%;
            }

            .cta-btns {
                flex-direction: column;
            }

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

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

/* roulang page: category3 */
:root {
    --primary: #00E5A0;
    --primary-dark: #00C488;
    --primary-light: #E6FFF5;
    --accent: #F5B400;
    --dark: #0B0E14;
    --dark-2: #151A23;
    --light-bg: #F5F7FA;
    --white: #FFFFFF;
    --text: #1F2430;
    --text-sub: #5A6472;
    --text-inverse: #FFFFFF;
    --text-inverse-sub: #AAB4C0;
    --border-light: #E6EAF0;
    --border-dark: #232B36;
    --radius: 16px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 8px rgba(11, 14, 20, .06);
    --shadow-md: 0 6px 20px rgba(11, 14, 20, .08);
    --shadow-lg: 0 12px 32px rgba(11, 14, 20, .12);
    --space-section: 96px;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--white);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

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

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

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

  button {
    cursor: pointer;
    border: none;
    background: none;
  }

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

  /* ===== Header ===== */
  .site-header {
    background: var(--dark);
    color: var(--text-inverse);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, .25);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
    gap: 24px;
  }

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

  .logo-icon {
    width: 38px;
    height: 38px;
    background: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #06251a;
    font-size: 18px;
    transition: transform .25s;
  }

  .logo:hover .logo-icon {
    transform: scale(1.05) rotate(-4deg);
  }

  .logo-text {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    letter-spacing: .02em;
  }

  .logo-text span {
    color: var(--primary);
  }

  .search-wrap {
    flex: 1;
    max-width: 460px;
    position: relative;
    margin: 0 auto;
  }

  .search-wrap i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #8A94A0;
    font-size: 14px;
    pointer-events: none;
    z-index: 1;
  }

  .search-wrap input {
    width: 100%;
    background: #F0F2F5;
    border: 2px solid transparent;
    border-radius: 50px;
    padding: 10px 16px 10px 42px;
    outline: none;
    transition: all .25s;
    color: var(--text);
    font-size: 14px;
  }

  .search-wrap input::placeholder {
    color: #8A94A0;
  }

  .search-wrap input:focus {
    background: #fff;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 229, 160, .15);
  }

  .nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .2);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    font-size: 16px;
    transition: all .2s;
  }

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

  .main-nav {
    display: flex;
    gap: 4px;
    padding-bottom: 12px;
    flex-wrap: wrap;
  }

  .main-nav a {
    padding: 8px 18px;
    color: var(--text-inverse-sub);
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    transition: all .22s;
    position: relative;
    line-height: 1.4;
  }

  .main-nav a::after {
    content: '';
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 4px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .25s;
  }

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

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

  .main-nav a.active {
    color: var(--primary);
    background: rgba(0, 229, 160, .1);
  }

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

  /* ===== Hero ===== */
  .page-hero {
    position: relative;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    padding: 92px 0 84px;
    background-color: var(--dark);
  }

  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(11, 14, 20, .94) 0%, rgba(11, 14, 20, .78) 60%, rgba(11, 14, 20, .55) 100%);
  }

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

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(245, 180, 0, .5);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .08em;
    margin-bottom: 22px;
    background: rgba(245, 180, 0, .08);
  }

  .page-hero h1 {
    font-size: 46px;
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
    margin-bottom: 18px;
  }

  .page-hero h1 .hero-highlight {
    color: var(--primary);
  }

  .page-hero .hero-desc {
    font-size: 17px;
    color: var(--text-inverse-sub);
    max-width: 640px;
    line-height: 1.8;
    margin-bottom: 32px;
  }

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

  /* ===== Button ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 15px;
    transition: all .25s;
    line-height: 1.4;
  }

  .btn-primary {
    background: var(--primary);
    color: #06251a;
  }

  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(0, 229, 160, .35);
  }

  .btn-outline-light {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .4);
  }

  .btn-outline-light:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, .1);
    transform: translateY(-2px);
  }

  .btn-accent {
    background: var(--accent);
    color: #3b2a00;
  }

  .btn-accent:hover {
    background: #e0a800;
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(245, 180, 0, .3);
  }

  /* ===== Section ===== */
  .section {
    padding: var(--space-section) 0;
  }

  .section-light {
    background: var(--light-bg);
  }

  .section-dark {
    background: var(--dark);
    color: var(--text-inverse);
  }

  .section-head {
    max-width: 760px;
    margin: 0 auto 56px;
    text-align: center;
  }

  .section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .12em;
    color: var(--primary-dark);
    text-transform: uppercase;
    margin-bottom: 10px;
    background: var(--primary-light);
    padding: 4px 14px;
    border-radius: 50px;
  }

  .section-dark .section-tag {
    color: var(--primary);
    background: rgba(0, 229, 160, .12);
  }

  .section-head h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 12px;
  }

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

  .section-head p {
    font-size: 16px;
    color: var(--text-sub);
    line-height: 1.7;
  }

  .section-dark .section-head p {
    color: var(--text-inverse-sub);
  }

  /* ===== Service Card ===== */
  .service-card {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 30px 26px;
    transition: all .3s;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
  }

  .service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .35s;
  }

  .service-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
  }

  .service-card:hover::before {
    transform: scaleX(1);
  }

  .service-icon {
    width: 54px;
    height: 54px;
    border-radius: 14px;
    background: var(--primary-light);
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 22px;
    transition: all .3s;
  }

  .service-card:hover .service-icon {
    background: var(--primary);
    color: #06251a;
    transform: scale(1.05);
  }

  .service-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
  }

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

  .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-dark);
    margin-top: 16px;
    transition: gap .2s;
  }

  .service-card:hover .card-link {
    gap: 12px;
  }

  /* ===== Scene ===== */
  .scene-row {
    display: flex;
    align-items: center;
    gap: 56px;
    margin-bottom: 64px;
  }

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

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

  .scene-media {
    flex: 1;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    position: relative;
    min-height: 260px;
    background-color: var(--dark-2);
  }

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

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

  .scene-content {
    flex: 1;
  }

  .scene-content .scene-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    color: var(--accent);
    background: rgba(245, 180, 0, .12);
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 14px;
  }

  .scene-content h3 {
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 14px;
  }

  .scene-content p {
    font-size: 15px;
    color: var(--text-sub);
    line-height: 1.8;
    margin-bottom: 16px;
  }

  .scene-content ul {
    list-style: none;
    padding: 0;
  }

  .scene-content ul li {
    font-size: 14px;
    color: var(--text-sub);
    padding-left: 24px;
    position: relative;
    margin-bottom: 8px;
    line-height: 1.6;
  }

  .scene-content ul li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 12px;
    top: 3px;
  }

  /* ===== Process ===== */
  .process-list {
    max-width: 880px;
    margin: 0 auto;
  }

  .process-row {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 30px 0;
    border-bottom: 1px solid var(--border-light);
    transition: background .25s, padding .25s;
    border-radius: 12px;
  }

  .process-row:last-child {
    border-bottom: none;
  }

  .process-row:hover {
    background: rgba(0, 229, 160, .04);
    padding-left: 16px;
    padding-right: 16px;
  }

  .process-num {
    width: 62px;
    height: 62px;
    border-radius: 16px;
    background: var(--primary-light);
    color: var(--primary-dark);
    font-size: 26px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
    flex-shrink: 0;
    transition: all .3s;
  }

  .process-row:hover .process-num {
    background: var(--primary);
    color: #06251a;
    transform: scale(1.05);
  }

  .process-content {
    flex: 1;
  }

  .process-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
  }

  .process-content p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
  }

  .process-arrow {
    color: var(--primary);
    font-size: 20px;
    opacity: 0;
    transform: translateX(-10px);
    transition: all .3s;
  }

  .process-row:hover .process-arrow {
    opacity: 1;
    transform: translateX(0);
  }

  /* ===== Stat ===== */
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
  }

  .stat-cell {
    text-align: center;
    padding: 24px 16px;
    position: relative;
  }

  .stat-cell:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 20%;
    bottom: 20%;
    width: 1px;
    background: var(--border-dark);
  }

  .stat-num {
    font-size: 44px;
    font-weight: 800;
    color: var(--primary);
    font-family: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
    line-height: 1.2;
    display: block;
  }

  .stat-cell.accent .stat-num {
    color: var(--accent);
  }

  .stat-label {
    font-size: 13px;
    color: var(--text-inverse-sub);
    margin-top: 8px;
    letter-spacing: .04em;
  }

  /* ===== FAQ ===== */
  .faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

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

  .faq-item.open {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
  }

  .faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    padding: 22px 26px;
    cursor: pointer;
    font-weight: 700;
    font-size: 16px;
    color: var(--text);
    transition: color .2s;
    line-height: 1.5;
    text-align: left;
    width: 100%;
  }

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

  .faq-question i {
    transition: transform .3s;
    color: var(--text-sub);
    font-size: 14px;
    flex-shrink: 0;
  }

  .faq-item.open .faq-question i {
    transform: rotate(180deg);
    color: var(--primary);
  }

  .faq-answer {
    display: none;
    padding: 0 26px 24px;
    color: var(--text-sub);
    line-height: 1.75;
    font-size: 15px;
  }

  .faq-item.open .faq-answer {
    display: block;
  }

  /* ===== CTA ===== */
  .cta-section {
    background: var(--dark);
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -80px;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(0, 229, 160, .18), transparent 70%);
    border-radius: 50%;
  }

  .cta-section::after {
    content: '';
    position: absolute;
    bottom: -120px;
    left: -80px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(245, 180, 0, .12), transparent 70%);
    border-radius: 50%;
  }

  .cta-inner {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 72px 24px;
  }

  .cta-inner h2 {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
    line-height: 1.3;
  }

  .cta-inner p {
    font-size: 17px;
    color: var(--text-inverse-sub);
    max-width: 620px;
    margin: 0 auto 32px;
    line-height: 1.7;
  }

  /* ===== Form ===== */
  .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
  }

  .contact-info h3 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 16px;
  }

  .contact-info p {
    color: var(--text-sub);
    line-height: 1.7;
    margin-bottom: 24px;
    font-size: 15px;
  }

  .contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 18px;
  }

  .contact-info-item i {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--primary-light);
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
  }

  .contact-info-item .info-label {
    font-size: 13px;
    color: var(--text-sub);
  }

  .contact-info-item .info-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
  }

  .form-card {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow-sm);
  }

  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .form-group.full {
    grid-column: 1 / -1;
  }

  .form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 15px;
    outline: none;
    transition: all .22s;
    background: #fafbfc;
    width: 100%;
    color: var(--text);
  }

  .form-group input:focus,
  .form-group select:focus,
  .form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 229, 160, .14);
    background: #fff;
  }

  .form-group textarea {
    resize: vertical;
    min-height: 100px;
  }

  .form-submit {
    margin-top: 22px;
    width: 100%;
  }

  .form-note {
    font-size: 12px;
    color: var(--text-sub);
    margin-top: 12px;
    text-align: center;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--dark);
    color: var(--text-inverse-sub);
    padding-top: 64px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
  }

  .footer-brand .logo {
    margin-bottom: 16px;
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-inverse-sub);
    max-width: 420px;
  }

  .footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
  }

  .footer-col a {
    display: block;
    color: var(--text-inverse-sub);
    font-size: 14px;
    padding: 6px 0;
    transition: color .2s;
    line-height: 1.5;
  }

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

  .footer-col p {
    font-size: 14px;
    padding: 5px 0;
    color: var(--text-inverse-sub);
    line-height: 1.6;
  }

  .footer-bottom {
    border-top: 1px solid var(--border-dark);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: #6a7280;
  }

  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .container {
      padding-left: 20px;
      padding-right: 20px;
    }

    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .stat-cell:not(:last-child)::after {
      display: none;
    }

    .scene-row,
    .scene-row.reverse {
      flex-direction: column;
      gap: 28px;
    }

    .scene-media {
      width: 100%;
      min-height: 220px;
    }

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

  @media (max-width: 768px) {
    :root {
      --space-section: 64px;
    }

    .header-inner {
      flex-wrap: wrap;
      gap: 12px;
      padding-top: 12px;
      padding-bottom: 12px;
    }

    .search-wrap {
      order: 3;
      max-width: 100%;
      flex-basis: 100%;
    }

    .nav-toggle {
      display: block;
    }

    .main-nav {
      display: none;
      padding-bottom: 16px;
      flex-direction: column;
      gap: 4px;
    }

    .main-nav.open {
      display: flex;
    }

    .main-nav a {
      padding: 12px 16px;
    }

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

    .page-hero {
      padding: 64px 0 56px;
    }

    .page-hero h1 {
      font-size: 34px;
    }

    .page-hero .hero-desc {
      font-size: 16px;
    }

    .section-head h2 {
      font-size: 26px;
    }

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

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

    .process-row {
      flex-direction: column;
      align-items: flex-start;
      gap: 16px;
      padding: 24px 0;
    }

    .process-arrow {
      display: none;
    }

    .process-row:hover {
      padding-left: 8px;
      padding-right: 8px;
    }

    .cta-inner h2 {
      font-size: 28px;
    }

    .hero-actions .btn {
      padding: 11px 20px;
      font-size: 14px;
    }
  }

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

    .logo-text {
      font-size: 18px;
    }

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

    .stat-num {
      font-size: 36px;
    }

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

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

    .page-hero .hero-desc {
      font-size: 15px;
    }

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

    .hero-actions .btn {
      justify-content: center;
    }

    .form-card {
      padding: 24px 20px;
    }

    .footer-bottom {
      flex-direction: column;
      align-items: flex-start;
      gap: 4px;
    }
  }