/* roulang page: index */
:root {
  --primary: #6C5CE7;
  --primary-dark: #5A4BD1;
  --primary-light: #EFEDFC;
  --secondary: #00B8D9;
  --secondary-light: #E6FBFF;
  --accent: #FF9F43;
  --accent-light: #FFF3E8;
  --success: #00B894;
  --bg: #F7F8FC;
  --bg-soft: #F1F2F7;
  --bg-dark: #0F1B2D;
  --text: #1E2A3A;
  --text-muted: #6B7A90;
  --border: #E5E9F2;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 4px 24px rgba(30,42,58,0.06);
  --shadow-lg: 0 16px 48px rgba(30,42,58,0.10);
  --shadow-primary: 0 8px 30px rgba(108,92,231,0.25);
  --transition: all 0.3s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}
.container { max-width: 1220px; }
.section { padding: 88px 0; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 50rem;
  letter-spacing: 0.3px;
}
.section-head h2 {
  font-size: clamp(1.7rem, 2.6vw, 2.2rem);
  font-weight: 800;
  color: var(--text);
  margin: 14px 0 8px;
  line-height: 1.25;
}
.section-head p { color: var(--text-muted); font-size: 1rem; max-width: 620px; }
.section-head.center { text-align: center; }
.section-head.center p { margin-left: auto; margin-right: auto; }

/* Header / Nav */
.site-header {
  background: var(--bg-dark);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 1080;
  box-shadow: 0 2px 20px rgba(15,27,45,0.18);
}
.brand-text {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.18rem;
  font-weight: 800;
  color: #fff !important;
  letter-spacing: 0.3px;
}
.brand-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 10px;
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 4px 14px rgba(108,92,231,0.4);
}
.navbar .navbar-nav .nav-link {
  color: rgba(255,255,255,0.82);
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 8px;
  transition: var(--transition);
  font-size: 0.95rem;
}
.navbar .navbar-nav .nav-link:hover,
.navbar .navbar-nav .nav-link:focus {
  color: #fff;
  background: rgba(255,255,255,0.08);
}
.navbar .navbar-nav .nav-link.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 16px rgba(108,92,231,0.35);
}
.navbar-toggler {
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 8px;
  padding: 6px 10px;
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.nav-extra .btn {
  white-space: nowrap;
}
.mega-dropdown { position: relative; }
.mega-dropdown .dropdown-menu {
  display: block;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.28s ease;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 20px;
  min-width: 520px;
  right: 0;
  left: auto;
  top: calc(100% + 8px);
}
.mega-dropdown.show .dropdown-menu,
.mega-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.mega-card-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
}
.mega-link {
  display: block;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: var(--transition);
  margin-bottom: 2px;
}
.mega-link:hover {
  background: var(--primary-light);
  color: var(--primary);
  padding-left: 16px;
}
.mega-empty { font-size: 0.85rem; color: var(--text-muted); padding: 6px 2px; }
.ellipsis {
  display: inline-block;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: bottom;
}

/* Hero */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: #fff;
  padding: 90px 0;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(15,27,45,0.78);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 45%, rgba(108,92,231,0.30) 0%, transparent 62%);
}
.hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 7px 18px;
  border-radius: 50rem;
  margin-bottom: 22px;
}
.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.1rem);
  font-weight: 800;
  line-height: 1.18;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}
.hero-title .text-gradient {
  background: linear-gradient(90deg, var(--secondary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.82);
  max-width: 560px;
  margin-bottom: 28px;
}
.btn-hero-primary {
  background: var(--primary);
  color: #fff;
  border: 2px solid var(--primary);
  padding: 12px 30px;
  border-radius: 50rem;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  box-shadow: var(--shadow-primary);
}
.btn-hero-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  color: #fff;
}
.btn-hero-secondary {
  background: rgba(255,255,255,0.10);
  color: #fff;
  border: 2px solid rgba(255,255,255,0.35);
  padding: 12px 30px;
  border-radius: 50rem;
  font-weight: 600;
  font-size: 1rem;
  backdrop-filter: blur(4px);
  transition: var(--transition);
}
.btn-hero-secondary:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.6);
  transform: translateY(-2px);
  color: #fff;
}
.hero-trust {
  margin-top: 26px;
  color: rgba(255,255,255,0.75);
  font-size: 0.92rem;
}
.hero-trust i { color: var(--success); margin-right: 4px; }
.hero-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  padding: 26px;
  color: #fff;
  box-shadow: var(--shadow);
}
.hero-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 16px;
  color: rgba(255,255,255,0.95);
}
.hero-card-header i { color: var(--secondary); }
.quick-link {
  display: flex;
  align-items: center;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  margin-bottom: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255,255,255,0.88);
  transition: var(--transition);
}
.quick-link:hover {
  background: rgba(108,92,231,0.28);
  color: #fff;
  padding-left: 18px;
}
.quick-link .badge {
  font-size: 0.75rem;
  background: rgba(255,255,255,0.14);
  color: #fff;
  font-weight: 500;
}

/* Features */
.features-section { background: var(--bg); }
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  height: 100%;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}
.feature-icon.blue { background: var(--primary-light); color: var(--primary); }
.feature-icon.cyan { background: var(--secondary-light); color: var(--secondary); }
.feature-icon.orange { background: var(--accent-light); color: var(--accent); }
.feature-card h3 { font-size: 1.22rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--text-muted); font-size: 0.93rem; margin-bottom: 16px; }
.feature-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.feature-link:hover { gap: 10px; color: var(--primary-dark); }

/* Category Cards */
.category-section { background: #fff; }
.category-card {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 300px;
  border-radius: var(--radius-lg);
  padding: 30px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow);
}
.category-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,27,45,0.10) 0%, rgba(15,27,45,0.82) 100%);
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.category-info { position: relative; z-index: 2; color: #fff; }
.category-info h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 8px; }
.category-info p { color: rgba(255,255,255,0.88); font-size: 0.93rem; margin-bottom: 16px; max-width: 300px; }
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.35);
  padding: 9px 20px;
  border-radius: 50rem;
  font-size: 0.88rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
  transition: var(--transition);
}
.category-link:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* Ranking */
.ranking-section { background: var(--bg); }
.ranking-list {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
}
.ranking-list-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.ranking-list-title i { color: var(--accent); }
.ranking-item {
  display: flex;
  align-items: center;
  padding: 12px 10px;
  border-radius: 12px;
  transition: var(--transition);
  gap: 12px;
}
.ranking-item:hover {
  background: var(--primary-light);
}
.ranking-num {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--bg-soft);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.ranking-item:first-child .ranking-num,
.ranking-item:nth-child(2) .ranking-num,
.ranking-item:nth-child(3) .ranking-num {
  background: var(--accent);
  color: #fff;
}
.ranking-text {
  flex: 1;
  font-size: 0.93rem;
  font-weight: 500;
}
.ranking-text:hover { color: var(--primary); }
.ranking-tag {
  font-size: 0.72rem;
  background: var(--accent-light);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 50rem;
  flex-shrink: 0;
}
.ranking-side-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  height: 100%;
  box-shadow: var(--shadow);
}
.ranking-side-card h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 14px; }
.ranking-side-item {
  display: flex;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}
.ranking-side-item:last-child { border-bottom: none; }
.ranking-side-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary-light);
  color: var(--secondary);
  flex-shrink: 0;
  font-size: 0.9rem;
}
.ranking-side-text { font-size: 0.9rem; color: var(--text-muted); line-height: 1.5; }

/* News */
.news-section { background: #fff; }
.update-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50rem;
  padding: 9px 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
}
.update-bar i { color: var(--accent); }
.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-tag {
  padding: 7px 16px;
  border-radius: 50rem;
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: default;
  transition: var(--transition);
}
.filter-tag.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.news-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.news-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.news-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.news-badge {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 50rem;
}
.news-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}
.news-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
}
.news-title a { transition: var(--transition); }
.news-title a:hover { color: var(--primary); }
.news-desc {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.news-link {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
  margin-top: 4px;
}
.news-link:hover { gap: 10px; }
.empty-state {
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 60px 20px;
  text-align: center;
  color: var(--text-muted);
  width: 100%;
}
.empty-state i { display: block; margin-bottom: 12px; color: var(--text-muted); }

/* Process */
.process-section {
  background: var(--bg-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.process-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(108,92,231,0.25) 0%, transparent 70%);
  border-radius: 50%;
}
.process-section .section-tag { background: rgba(255,255,255,0.12); color: rgba(255,255,255,0.9); }
.process-section .section-head h2 { color: #fff; }
.process-section .section-head p { color: rgba(255,255,255,0.6); }
.step-card {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg);
  height: 100%;
  transition: var(--transition);
}
.step-card:hover {
  background: rgba(255,255,255,0.10);
  transform: translateY(-4px);
}
.step-num {
  width: 54px;
  height: 54px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(108,92,231,0.4);
}
.step-card h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; color: #fff; }
.step-card p { color: rgba(255,255,255,0.65); font-size: 0.88rem; }

/* FAQ */
.faq-section { background: var(--bg); }
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.faq-accordion .accordion-item { border: none; }
.faq-accordion .accordion-item + .accordion-item { border-top: 1px solid var(--border); }
.faq-accordion .accordion-button {
  padding: 20px 24px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  background: #fff;
  box-shadow: none;
  transition: var(--transition);
}
.faq-accordion .accordion-button:not(.collapsed) {
  background: var(--primary-light);
  color: var(--primary);
}
.faq-accordion .accordion-button:focus { box-shadow: none; }
.faq-accordion .accordion-body {
  padding: 8px 24px 22px;
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.7;
}

/* CTA */
.cta-section {
  position: relative;
  padding: 90px 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  text-align: center;
  color: #fff;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(15,27,45,0.78);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 14px; }
.cta-section p { font-size: 1.05rem; color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto 30px; }
.btn-light-lg {
  background: #fff;
  color: var(--text);
  padding: 13px 34px;
  border-radius: 50rem;
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid transparent;
  transition: var(--transition);
}
.btn-light-lg:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}
.btn-outline-light-lg {
  background: transparent;
  color: #fff;
  padding: 13px 34px;
  border-radius: 50rem;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid rgba(255,255,255,0.5);
  transition: var(--transition);
}
.btn-outline-light-lg:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.10);
  transform: translateY(-2px);
  color: #fff;
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding-top: 60px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.footer-brand .brand-icon { width: 36px; height: 36px; font-size: 0.95rem; }
.site-footer p { font-size: 0.9rem; line-height: 1.7; }
.site-footer h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.site-footer .footer-links { display: flex; flex-direction: column; gap: 10px; }
.site-footer .footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);
}
.site-footer .footer-links a:hover { color: var(--secondary); }
.footer-tech {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 22px 0;
  margin-top: 40px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* Responsive */
@media (max-width: 1024px) {
  .mega-dropdown .dropdown-menu { min-width: 440px; }
  .section { padding: 68px 0; }
  .hero { min-height: 520px; padding: 70px 0; }
  .hero-card { padding: 20px; }
}
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: var(--bg-dark);
    border-radius: var(--radius);
    padding: 20px;
    margin-top: 14px;
    border: 1px solid rgba(255,255,255,0.1);
  }
  .navbar .navbar-nav .nav-link { padding: 10px 16px; }
  .mega-dropdown { display: none; }
  .hero { min-height: auto; }
  .hero-card { margin-top: 30px; }
  .category-card { min-height: 240px; }
}
@media (max-width: 767.98px) {
  .section { padding: 52px 0; }
  .hero { padding: 56px 0; }
  .hero-title { font-size: 2rem; }
  .hero-subtitle { font-size: 0.98rem; }
  .btn-hero-primary, .btn-hero-secondary { padding: 10px 22px; font-size: 0.93rem; }
  .feature-card { padding: 24px 20px; }
  .category-card { min-height: 260px; padding: 22px; }
  .ranking-side-card { margin-top: 20px; }
  .news-card { padding: 18px; }
  .update-bar { flex-wrap: wrap; border-radius: 14px; }
  .tag-filter { margin-top: 12px; }
  .cta-section { padding: 56px 0; }
  .btn-light-lg, .btn-outline-light-lg { padding: 11px 26px; font-size: 0.95rem; }
  .site-footer { padding-top: 40px; }
  .footer-bottom { margin-top: 20px; }
}
@media (max-width: 520px) {
  .hero-title { font-size: 1.7rem; }
  .brand-text { font-size: 1rem; }
  .brand-icon { width: 32px; height: 32px; }
  .section-tag { font-size: 0.78rem; padding: 5px 12px; }
  .step-card { padding: 22px 14px; }
  .step-num { width: 44px; height: 44px; font-size: 1rem; }
  .category-info h3 { font-size: 1.2rem; }
  .filter-tag { font-size: 0.78rem; padding: 5px 12px; }
  .news-title { font-size: 0.98rem; }
  .cta-section h2 { font-size: 1.55rem; }
}

/* roulang page: article */
:root{
    --primary:#4f46e5;--primary-dark:#3730a3;--primary-light:#818cf8;
    --accent:#06b6d4;--accent-light:#22d3ee;
    --dark:#0f172a;--dark-2:#1e293b;
    --bg:#f8fafc;--bg-alt:#f1f5f9;
    --text:#1e293b;--text-light:#475569;--text-lighter:#94a3b8;
    --border:#e2e8f0;--white:#fff;
    --radius:1.25rem;--radius-sm:.75rem;--radius-xs:.5rem;
    --shadow-sm:0 2px 8px rgba(15,23,42,.05);
    --shadow:0 8px 30px rgba(15,23,42,.08);
    --shadow-lg:0 16px 48px rgba(79,70,229,.18);
    --transition:.3s ease;
    --font-main:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-main);font-size:1rem;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:var(--primary);transition:color var(--transition)}
a:hover{color:var(--primary-dark)}
ul,ol{list-style:none}
.container{max-width:1200px}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--dark)}
.btn{border-radius:50rem;font-weight:600;padding:.6rem 1.4rem;transition:all var(--transition)}
.btn-primary{background:var(--primary);border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-outline-light{border-color:rgba(255,255,255,.35);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.section-title{font-size:2rem;font-weight:800;margin-bottom:.5rem}
.section-sub{color:var(--text-light);font-size:1.0625rem}
.badge{font-weight:600;letter-spacing:.02em}
.tag{display:inline-flex;align-items:center;gap:.35rem;background:var(--bg-alt);border:1px solid var(--border);border-radius:50rem;padding:.3rem .85rem;font-size:.85rem;color:var(--text-light)}
/* ===== Header/Nav ===== */
.site-header{position:sticky;top:0;z-index:1050;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(226,232,240,.7);box-shadow:0 2px 12px rgba(15,23,42,.04)}
.site-header .navbar{padding:1rem 0}
.brand-text{display:flex;align-items:center;gap:.7rem;font-weight:800;font-size:1.15rem;color:var(--dark)}
.brand-text:hover{color:var(--primary)}
.brand-icon{width:38px;height:38px;border-radius:.625rem;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-size:.95rem;box-shadow:var(--shadow-sm)}
.site-header .nav-link{font-weight:600;color:var(--text-light);padding:.5rem 1.1rem;border-radius:2rem;position:relative;transition:all var(--transition)}
.site-header .nav-link:hover{color:var(--primary);background:rgba(79,70,229,.08)}
.site-header .nav-link.active{color:var(--primary);background:rgba(79,70,229,.1)}
.navbar-toggler{border:none;outline:none!important;color:var(--dark)}
.navbar-toggler-icon{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2829,41,57,0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e")}
.mega-dropdown .btn{background:linear-gradient(135deg,var(--primary),var(--accent));border:none;color:#fff;font-weight:600}
.mega-dropdown .btn:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(79,70,229,.3)}
.mega-menu{border:none;border-radius:var(--radius-sm);box-shadow:var(--shadow);padding:1.25rem;min-width:420px;border:1px solid var(--border)}
.mega-card{border:1px solid var(--border);border-radius:var(--radius-sm);padding:1rem;background:var(--bg);height:100%}
.mega-card-title{font-weight:700;font-size:.95rem;color:var(--dark);margin-bottom:.6rem}
.mega-link{display:block;padding:.4rem .6rem;border-radius:.5rem;font-size:.9rem;color:var(--text-light);font-weight:500;transition:all var(--transition)}
.mega-link:hover{background:rgba(79,70,229,.08);color:var(--primary);padding-left:.9rem}
.mega-text{display:block;padding:.4rem .6rem;font-size:.85rem;color:var(--text-lighter)}
/* ===== Article Hero ===== */
.article-hero{position:relative;background:linear-gradient(135deg,rgba(15,23,42,.94),rgba(30,41,59,.82)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;padding:4.5rem 0 3.5rem;color:#fff}
.article-hero .breadcrumb{--bs-breadcrumb-divider-color:rgba(255,255,255,.5);margin-bottom:1.25rem}
.article-hero .breadcrumb a{color:rgba(255,255,255,.7)}
.article-hero .breadcrumb a:hover{color:#fff}
.article-hero .breadcrumb .active{color:rgba(255,255,255,.9)}
.category-badge{display:inline-flex;align-items:center;gap:.4rem;background:rgba(6,182,212,.2);border:1px solid rgba(6,182,212,.45);color:var(--accent-light);padding:.3rem .9rem;border-radius:50rem;font-size:.85rem;font-weight:600;margin-bottom:1rem}
.article-hero h1{font-size:2.4rem;font-weight:800;color:#fff;line-height:1.3;max-width:820px;margin-bottom:1rem;text-shadow:0 2px 20px rgba(0,0,0,.2)}
.article-meta{display:flex;flex-wrap:wrap;gap:1.5rem;font-size:.9rem;color:rgba(255,255,255,.75)}
.article-meta span{display:inline-flex;align-items:center;gap:.45rem}
/* ===== Article Main ===== */
.article-main-section{padding:3.5rem 0}
.article-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;height:100%}
.article-card-inner{padding:2.25rem}
.article-body{font-size:1.0625rem;line-height:1.85;color:var(--text)}
.article-body p{margin-bottom:1.15rem}
.article-body h2{font-size:1.5rem;margin:2rem 0 1rem;padding-left:.9rem;border-left:4px solid var(--primary)}
.article-body h3{font-size:1.25rem;margin:1.5rem 0 .75rem}
.article-body ul{margin-bottom:1.15rem;padding-left:.5rem}
.article-body ul li{position:relative;padding-left:1.5rem;margin-bottom:.5rem}
.article-body ul li::before{content:"◆";position:absolute;left:0;color:var(--primary-light);font-size:.75rem;top:.35rem}
.article-body blockquote{border-left:4px solid var(--accent);background:var(--bg-alt);padding:1rem 1.25rem;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:1.5rem 0;color:var(--text-light)}
.article-body img{border-radius:var(--radius-sm);margin:1.5rem 0;box-shadow:var(--shadow-sm)}
.article-tags{display:flex;flex-wrap:wrap;gap:.5rem;padding:1.25rem 2.25rem;border-top:1px solid var(--border);background:var(--bg)}
.article-tags .tag{font-size:.82rem}
.article-not-found{text-align:center;padding:4rem 2rem}
.article-not-found i{font-size:3rem;color:var(--text-lighter);margin-bottom:1rem}
.article-not-found h2{font-size:1.5rem;margin-bottom:.75rem}
.article-not-found p{color:var(--text-light);margin-bottom:1.5rem}
.article-footer-nav{display:flex;justify-content:space-between;gap:1rem;padding:1.5rem 2.25rem;border-top:1px solid var(--border)}
.article-footer-nav a{font-weight:600;display:inline-flex;align-items:center;gap:.5rem}
/* ===== Sidebar ===== */
.sidebar-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);padding:1.5rem;margin-bottom:1.5rem}
.sidebar-card h4{font-size:1.05rem;font-weight:700;margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}
.sidebar-card h4::after{content:"";flex:1;height:1px;background:var(--border)}
.sidebar-cat-link{display:flex;align-items:center;gap:.7rem;padding:.85rem 1rem;border-radius:var(--radius-sm);background:var(--bg);border:1px solid var(--border);margin-bottom:.7rem;transition:all var(--transition);font-weight:600;color:var(--text)}
.sidebar-cat-link:last-child{margin-bottom:0}
.sidebar-cat-link:hover{border-color:var(--primary-light);box-shadow:var(--shadow-sm);transform:translateX(4px);color:var(--primary)}
.sidebar-cat-link i{width:36px;height:36px;border-radius:.5rem;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-size:.85rem}
.sidebar-tip{display:flex;gap:.6rem;padding:.6rem 0;border-bottom:1px dashed var(--border);font-size:.9rem;color:var(--text-light)}
.sidebar-tip:last-child{border-bottom:none}
.sidebar-tip i{color:var(--accent);margin-top:.25rem}
.sidebar-cta{background:linear-gradient(135deg,var(--dark),var(--dark-2));border:none;color:#fff;text-align:center}
.sidebar-cta h4{color:#fff}
.sidebar-cta h4::after{background:rgba(255,255,255,.15)}
.sidebar-cta p{font-size:.9rem;color:rgba(255,255,255,.7);margin-bottom:1rem}
/* ===== FAQ ===== */
.faq-section{padding:4.5rem 0;background:var(--bg-alt)}
.faq-section .accordion-item{border:1px solid var(--border);border-radius:var(--radius-sm)!important;margin-bottom:.75rem;overflow:hidden;box-shadow:var(--shadow-sm)}
.faq-section .accordion-button{font-weight:700;color:var(--dark);background:var(--white);padding:1.1rem 1.4rem;box-shadow:none}
.faq-section .accordion-button:not(.collapsed){color:var(--primary);background:rgba(79,70,229,.04)}
.faq-section .accordion-button:focus{box-shadow:none;border-color:var(--border)}
.faq-section .accordion-body{color:var(--text-light);font-size:.95rem;line-height:1.75;padding:0 1.4rem 1.2rem}
/* ===== CTA ===== */
.cta-section{padding:4.5rem 0;background:var(--dark);position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(79,70,229,.35),rgba(6,182,212,.2)); }
.cta-inner{position:relative;text-align:center;max-width:700px;margin:0 auto;color:#fff}
.cta-inner h2{color:#fff;font-size:2rem;font-weight:800;margin-bottom:.75rem}
.cta-inner p{color:rgba(255,255,255,.75);margin-bottom:1.75rem}
.cta-buttons{display:flex;justify-content:center;gap:.85rem;flex-wrap:wrap}
/* ===== Footer ===== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.8);padding:4rem 0 0}
.site-footer .footer-brand{display:flex;align-items:center;gap:.7rem;font-size:1.2rem;font-weight:800;color:#fff;margin-bottom:1rem}
.site-footer p{font-size:.92rem;color:rgba(255,255,255,.6)}
.site-footer h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:1.1rem}
.footer-links{display:flex;flex-direction:column;gap:.55rem}
.footer-links a{color:rgba(255,255,255,.65);font-size:.92rem;transition:all var(--transition)}
.footer-links a:hover{color:#fff;padding-left:.3rem}
.footer-tech{display:block;color:rgba(255,255,255,.45);font-size:.85rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:2.5rem;padding:1.5rem 0;text-align:center}
.footer-bottom p{font-size:.85rem;color:rgba(255,255,255,.5);margin:0}
/* ===== Responsive ===== */
@media (max-width:991.98px){
    .site-header .navbar-collapse{background:var(--white);border-radius:var(--radius-sm);padding:1rem;box-shadow:var(--shadow);margin-top:.5rem;border:1px solid var(--border)}
    .site-header .nav-link{padding:.5rem .9rem}
    .nav-extra{width:100%;margin-top:.5rem}
    .mega-menu{min-width:auto}
    .article-hero h1{font-size:1.8rem}
    .section-title{font-size:1.6rem}
}
@media (max-width:767.98px){
    .article-hero{padding:3rem 0 2.5rem}
    .article-hero h1{font-size:1.5rem}
    .article-card-inner{padding:1.5rem}
    .article-tags,.article-footer-nav{padding:1rem 1.5rem}
    .mega-menu{min-width:100%}
    .cta-inner h2{font-size:1.5rem}
}
@media (max-width:575.98px){
    .article-meta{flex-direction:column;gap:.5rem}
    .article-body{font-size:1rem}
    .cta-buttons .btn{width:100%}
}

/* roulang page: category1 */
:root {
      --primary: #4f46e5;
      --primary-dark: #4338ca;
      --primary-light: #eef2ff;
      --accent: #f59e0b;
      --accent-light: #fef3c7;
      --cyan: #06b6d4;
      --dark: #0f172a;
      --dark-2: #1e293b;
      --bg: #f8fafc;
      --bg-gray: #f1f5f9;
      --white: #ffffff;
      --text: #1e293b;
      --text-light: #64748b;
      --border: #e2e8f0;
      --radius: 16px;
      --radius-sm: 10px;
      --radius-lg: 24px;
      --shadow-sm: 0 1px 3px rgba(15,23,42,0.06);
      --shadow: 0 4px 18px rgba(15,23,42,0.06);
      --shadow-lg: 0 16px 40px rgba(15,23,42,0.1);
      --transition: all 0.3s ease;
      --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { font-family: var(--font-main); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-dark); }
    ul, ol { list-style: none; }
    .container { max-width: 1200px; }
    .section-padding { padding: 90px 0; }
    .section-head { text-align: center; max-width: 760px; margin: 0 auto 52px; }
    .section-head .section-tag { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 600; border-radius: 30px; padding: 6px 18px; letter-spacing: 1px; margin-bottom: 16px; }
    .section-head h2 { font-size: 38px; font-weight: 700; color: var(--dark); line-height: 1.3; margin-bottom: 14px; letter-spacing: -0.5px; }
    .section-head p { color: var(--text-light); font-size: 16px; line-height: 1.7; }

    /* ===== Header & Nav ===== */
    .site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid rgba(226,232,240,0.6); box-shadow: 0 2px 12px rgba(15,23,42,0.04); }
    .site-header .navbar { padding: 14px 0; }
    .brand-text { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--dark) !important; letter-spacing: -0.3px; }
    .brand-icon { width: 38px; height: 38px; border-radius: 12px; background: linear-gradient(135deg, var(--primary), var(--cyan)); display: inline-flex; align-items: center; justify-content: center; color: var(--white); font-size: 15px; box-shadow: 0 4px 12px rgba(79,70,229,0.28); }
    .site-header .nav-link { font-size: 15px; font-weight: 500; color: var(--dark-2) !important; padding: 8px 18px !important; border-radius: 30px; margin: 0 2px; transition: var(--transition); }
    .site-header .nav-link:hover { color: var(--primary) !important; background: var(--primary-light); }
    .site-header .nav-link.active { color: var(--primary) !important; background: var(--primary-light); font-weight: 600; position: relative; }
    .nav-extra .btn-outline-light { border-color: var(--border); color: var(--dark-2); background: var(--white); font-size: 14px; font-weight: 500; }
    .nav-extra .btn-outline-light:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
    .mega-dropdown { position: static; }
    .mega-menu { width: 600px; max-width: 90vw; padding: 20px; border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--shadow-lg); background: var(--white); margin-top: 12px; }
    .mega-menu::before { content: ''; position: absolute; top: -6px; right: 40px; width: 12px; height: 12px; background: var(--white); border-left: 1px solid var(--border); border-top: 1px solid var(--border); transform: rotate(45deg); }
    .mega-card { padding: 14px; border-radius: 14px; background: var(--bg); min-height: 120px; }
    .mega-card-title { font-size: 14px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
    .mega-link { display: block; font-size: 14px; color: var(--text-light); padding: 5px 0; line-height: 1.5; }
    .mega-link:hover { color: var(--primary); text-decoration: none; }
    .ellipsis { display: inline-block; max-width: 180px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; vertical-align: bottom; }
    .navbar-toggler { border: none; padding: 6px 10px; }
    .navbar-toggler:focus { box-shadow: none; }
    .navbar-toggler-icon { width: 1.4em; height: 1.4em; filter: invert(0); }

    /* ===== Page Hero ===== */
    .page-hero { position: relative; background-image: linear-gradient(135deg, rgba(15,23,42,0.75), rgba(15,23,42,0.55)), url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; background-repeat: no-repeat; padding: 90px 0 80px; color: var(--white); }
    .page-hero .hero-label { display: inline-block; background: rgba(255,255,255,0.18); border: 1px solid rgba(255,255,255,0.25); border-radius: 30px; padding: 5px 18px; font-size: 13px; letter-spacing: 1px; font-weight: 500; margin-bottom: 20px; }
    .page-hero h1 { font-size: 44px; font-weight: 700; letter-spacing: -0.5px; line-height: 1.25; margin-bottom: 16px; }
    .page-hero p.lead { font-size: 17px; color: rgba(255,255,255,0.85); max-width: 620px; line-height: 1.8; margin-bottom: 24px; }
    .breadcrumb-custom { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,0.7); }
    .breadcrumb-custom a { color: rgba(255,255,255,0.85); }
    .breadcrumb-custom a:hover { color: var(--white); }
    .breadcrumb-custom i { font-size: 11px; }

    /* ===== Login Methods ===== */
    .login-methods { background: var(--white); border-bottom: 1px solid var(--border); }
    .login-method-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 28px 26px; height: 100%; position: relative; transition: var(--transition); overflow: hidden; }
    .login-method-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--cyan)); transform: scaleX(0); transform-origin: left; transition: transform 0.4s ease; }
    .login-method-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); background: var(--white); border-color: transparent; }
    .login-method-card:hover::before { transform: scaleX(1); }
    .method-icon { width: 56px; height: 56px; border-radius: 18px; display: inline-flex; align-items: center; justify-content: center; font-size: 22px; color: var(--white); margin-bottom: 20px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); box-shadow: 0 6px 16px rgba(79,70,229,0.25); }
    .method-icon.cyan { background: linear-gradient(135deg, #06b6d4, #0ea5e9); box-shadow: 0 6px 16px rgba(6,182,212,0.25); }
    .method-icon.amber { background: linear-gradient(135deg, #f59e0b, #f97316); box-shadow: 0 6px 16px rgba(245,158,11,0.25); }
    .method-icon.green { background: linear-gradient(135deg, #10b981, #059669); box-shadow: 0 6px 16px rgba(16,185,129,0.25); }
    .login-method-card h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
    .login-method-card p { font-size: 14px; color: var(--text-light); line-height: 1.65; margin-bottom: 14px; }
    .method-tag { display: inline-block; font-size: 12px; background: var(--primary-light); color: var(--primary); border-radius: 20px; padding: 3px 12px; font-weight: 600; }
    .method-tag.amber { background: var(--accent-light); color: #d97706; }
    .method-tag.cyan { background: #ecfeff; color: #0891b2; }
    .method-tag.green { background: #ecfdf5; color: #059669; }
    .method-link { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: var(--primary); margin-top: 6px; }
    .method-link i { font-size: 12px; transition: transform 0.3s; }
    .method-link:hover i { transform: translateX(4px); }

    /* ===== Login Steps ===== */
    .login-steps { background: var(--bg); position: relative; }
    .step-item { text-align: center; padding: 30px 24px; position: relative; background: var(--white); border-radius: var(--radius); border: 1px solid var(--border); height: 100%; transition: var(--transition); }
    .step-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
    .step-num { width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--cyan)); color: var(--white); font-size: 20px; font-weight: 700; display: flex; align-items: center; justify-content: center; box-shadow: 0 8px 20px rgba(79,70,229,0.25); position: relative; z-index: 1; }
    .step-item h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
    .step-item p { font-size: 14px; color: var(--text-light); line-height: 1.65; }
    .step-arrow { position: absolute; top: 50%; right: -16px; z-index: 2; font-size: 18px; color: var(--primary); opacity: 0.5; transform: translateY(-50%); }
    @media (max-width: 991px) { .step-arrow { display: none; } }

    /* ===== Safe Tips ===== */
    .safe-tips { background: linear-gradient(135deg, #0f172a, #1e293b); color: var(--white); padding: 90px 0; }
    .safe-tips .section-head h2 { color: var(--white); }
    .safe-tips .section-head p { color: rgba(255,255,255,0.65); }
    .safe-tips .section-tag { background: rgba(255,255,255,0.12); color: rgba(255,255,255,0.85); }
    .tip-card { display: flex; gap: 16px; padding: 22px 20px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); height: 100%; transition: var(--transition); }
    .tip-card:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.18); transform: translateY(-3px); }
    .tip-icon { width: 44px; height: 44px; flex-shrink: 0; border-radius: 12px; background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; font-size: 17px; color: #f59e0b; }
    .tip-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 4px; color: var(--white); }
    .tip-card p { font-size: 13px; color: rgba(255,255,255,0.6); line-height: 1.6; }

    /* ===== Content Cards ===== */
    .content-list { background: var(--white); }
    .content-card { border-radius: var(--radius); overflow: hidden; background: var(--white); border: 1px solid var(--border); transition: var(--transition); height: 100%; display: flex; flex-direction: column; }
    .content-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); border-color: transparent; }
    .content-card-img { overflow: hidden; aspect-ratio: 16/10; position: relative; }
    .content-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
    .content-card:hover .content-card-img img { transform: scale(1.06); }
    .content-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
    .content-card-body .card-tag { align-self: flex-start; font-size: 12px; font-weight: 600; color: var(--primary); background: var(--primary-light); border-radius: 20px; padding: 3px 12px; margin-bottom: 10px; }
    .content-card-body h3 { font-size: 17px; font-weight: 700; color: var(--dark); line-height: 1.4; margin-bottom: 8px; transition: var(--transition); }
    .content-card-body h3 a { color: inherit; }
    .content-card-body h3 a:hover { color: var(--primary); }
    .content-card-body p { font-size: 14px; color: var(--text-light); line-height: 1.65; flex: 1; }
    .content-card-meta { display: flex; align-items: center; gap: 14px; font-size: 12px; color: #94a3b8; padding-top: 14px; border-top: 1px solid var(--border); margin-top: 12px; }
    .content-card-meta i { margin-right: 4px; }

    /* ===== FAQ ===== */
    .faq-section { background: var(--bg); }
    .faq-wrap { max-width: 860px; margin: 0 auto; }
    .faq-item { border: 1px solid var(--border); border-radius: 14px; margin-bottom: 14px; background: var(--white); overflow: hidden; transition: var(--transition); }
    .faq-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
    .faq-item summary { cursor: pointer; padding: 20px 26px; font-size: 15px; font-weight: 600; color: var(--dark); display: flex; align-items: center; gap: 12px; list-style: none; position: relative; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: '+'; margin-left: auto; font-size: 24px; color: var(--primary); font-weight: 300; transition: transform 0.3s; flex-shrink: 0; }
    .faq-item[open] summary::after { transform: rotate(45deg); }
    .faq-item summary .faq-num { width: 30px; height: 30px; border-radius: 50%; background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
    .faq-item .faq-content { padding: 0 26px 22px 68px; font-size: 14px; color: var(--text-light); line-height: 1.75; }

    /* ===== CTA ===== */
    .cta-section { position: relative; background-image: linear-gradient(135deg, rgba(79,70,229,0.88), rgba(6,182,212,0.78)), url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; padding: 80px 0; color: var(--white); text-align: center; }
    .cta-section h2 { font-size: 36px; font-weight: 700; margin-bottom: 14px; color: var(--white); }
    .cta-section p { font-size: 16px; color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 30px; line-height: 1.7; }
    .cta-buttons { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
    .btn-brand { display: inline-block; padding: 12px 34px; border-radius: 30px; font-size: 15px; font-weight: 600; background: var(--white); color: var(--primary); border: none; transition: var(--transition); box-shadow: 0 4px 16px rgba(0,0,0,0.12); }
    .btn-brand:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(0,0,0,0.18); color: var(--primary-dark); }
    .btn-ghost-light { display: inline-block; padding: 12px 34px; border-radius: 30px; font-size: 15px; font-weight: 600; background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.6); transition: var(--transition); }
    .btn-ghost-light:hover { background: rgba(255,255,255,0.12); border-color: var(--white); transform: translateY(-3px); }

    /* ===== Footer ===== */
    .site-footer { background: var(--dark); color: rgba(255,255,255,0.7); padding: 64px 0 0; }
    .site-footer h4 { color: var(--white); font-size: 16px; font-weight: 600; margin-bottom: 18px; }
    .site-footer .footer-brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--white); margin-bottom: 14px; }
    .site-footer .footer-brand .brand-icon { width: 36px; height: 36px; font-size: 14px; }
    .site-footer p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.6); }
    .footer-links { display: flex; flex-direction: column; gap: 8px; }
    .footer-links a { color: rgba(255,255,255,0.6); font-size: 14px; transition: var(--transition); }
    .footer-links a:hover { color: var(--white); }
    .footer-tech { display: block; font-size: 13px; color: rgba(255,255,255,0.4); padding: 2px 0; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; margin-top: 50px; text-align: center; }
    .footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.4); margin: 0; }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .section-padding { padding: 70px 0; }
      .section-head h2 { font-size: 30px; }
      .page-hero h1 { font-size: 36px; }
    }
    @media (max-width: 768px) {
      .section-padding { padding: 56px 0; }
      .section-head h2 { font-size: 26px; }
      .section-head { margin-bottom: 36px; }
      .page-hero { padding: 60px 0 50px; }
      .page-hero h1 { font-size: 30px; }
      .page-hero p.lead { font-size: 15px; }
      .mega-menu { width: 100%; }
      .login-method-card { padding: 24px 20px; }
      .cta-section h2 { font-size: 26px; }
      .cta-section { padding: 56px 20px; }
      .site-footer { padding-top: 44px; }
      .faq-item summary { padding: 16px 18px; font-size: 14px; }
      .faq-item .faq-content { padding: 0 18px 18px 52px; }
    }
    @media (max-width: 520px) {
      .section-padding { padding: 44px 0; }
      .section-head h2 { font-size: 22px; }
      .page-hero h1 { font-size: 26px; }
      .page-hero p.lead { font-size: 14px; }
      .step-item { padding: 20px 16px; }
      .step-num { width: 44px; height: 44px; font-size: 16px; }
      .tip-card { padding: 16px; }
      .content-card-body { padding: 18px; }
      .cta-buttons .btn-brand, .cta-buttons .btn-ghost-light { padding: 10px 22px; font-size: 14px; }
    }

/* roulang page: category2 */
:root{
  --primary:#4f46e5;
  --primary-dark:#3730a3;
  --primary-light:#eef2ff;
  --secondary:#0ea5e9;
  --accent:#f59e0b;
  --success:#10b981;
  --danger:#ef4444;
  --dark:#0b1222;
  --dark-2:#111c35;
  --body-bg:#f4f6fb;
  --card-bg:#ffffff;
  --text:#1a2333;
  --text-muted:#64748b;
  --border:#e2e8f0;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 8px rgba(15,23,42,.06);
  --shadow-md:0 8px 24px rgba(15,23,42,.08);
  --shadow-lg:0 16px 40px rgba(15,23,42,.12);
  --transition:all .25s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--body-bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
.container{max-width:1200px}
.section-pad{padding:90px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 50px}
.section-tag{
  display:inline-block;background:var(--primary-light);color:var(--primary);
  font-size:.82rem;font-weight:600;padding:.4rem 1.2rem;border-radius:50px;
  letter-spacing:.5px;margin-bottom:14px;
}
.section-title{font-size:2.2rem;font-weight:700;line-height:1.3;margin-bottom:14px;color:var(--dark)}
.section-desc{color:var(--text-muted);font-size:1.02rem}
.text-gradient{
  background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.btn{
  border-radius:50px;font-weight:600;padding:.55rem 1.6rem;border:0;
  transition:var(--transition);font-size:.95rem;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 140%);
  box-shadow:0 4px 16px rgba(79,70,229,.28);
}
.btn-primary:hover,.btn-primary:focus{
  background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 140%);
  transform:translateY(-2px);box-shadow:0 8px 24px rgba(79,70,229,.35);
}
.btn-outline-light{
  border:1.5px solid rgba(255,255,255,.7);color:#fff;background:transparent;
}
.btn-outline-light:hover{
  background:rgba(255,255,255,.15);border-color:#fff;color:#fff;transform:translateY(-2px);
}
.btn-outline-primary{
  border:1.5px solid var(--primary);color:var(--primary);background:transparent;
}
.btn-outline-primary:hover{
  background:var(--primary);color:#fff;transform:translateY(-2px);box-shadow:0 6px 18px rgba(79,70,229,.25);
}
/* Header */
.site-header{
  position:sticky;top:0;z-index:1050;background:rgba(11,18,34,.88);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.navbar{padding:.85rem 0}
.brand-text{
  display:flex;align-items:center;gap:.6rem;font-size:1.18rem;font-weight:700;color:#fff;
  letter-spacing:.5px;
}
.brand-text .brand-icon{
  width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  border-radius:12px;font-size:1rem;color:#fff;box-shadow:0 4px 12px rgba(79,70,229,.4);
}
.navbar .nav-link{
  color:rgba(255,255,255,.72) !important;font-weight:500;padding:.6rem 1.1rem;
  border-radius:50px;font-size:.95rem;position:relative;
}
.navbar .nav-link:hover{
  color:#fff !important;background:rgba(255,255,255,.08);
}
.navbar .nav-link.active{
  color:#fff !important;background:rgba(79,70,229,.35) !important;
}
.navbar .nav-link.active::after{
  content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);
  width:18px;height:3px;background:var(--secondary);border-radius:4px;
}
.navbar-toggler{
  border:1.5px solid rgba(255,255,255,.3);border-radius:10px;padding:.3rem .6rem;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(79,70,229,.4)}
.navbar-toggler-icon{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.mega-dropdown .btn{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);color:#fff;
  font-weight:500;
}
.mega-dropdown .btn:hover{
  background:rgba(79,70,229,.5);border-color:rgba(79,70,229,.6);
}
.mega-menu{
  border:0;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);
  padding:1.4rem;min-width:620px;margin-top:.8rem !important;border:1px solid var(--border);
}
.mega-card{
  background:var(--body-bg);border-radius:var(--radius-sm);padding:1.1rem 1rem;
  height:100%;
}
.mega-card-title{
  font-weight:700;color:var(--dark);font-size:.92rem;margin-bottom:.9rem;
  padding-bottom:.55rem;border-bottom:1px solid var(--border);
}
.mega-link{
  display:flex;align-items:center;gap:.5rem;padding:.38rem .5rem;border-radius:8px;
  color:var(--text);font-size:.9rem;transition:var(--transition);
}
.mega-link:hover{
  background:#fff;color:var(--primary);box-shadow:var(--shadow-sm);
}
.ellipsis{
  display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:180px;
}
/* Page Hero */
.page-hero{
  position:relative;padding:110px 0 120px;background:var(--dark);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;isolation:isolate;
}
.page-hero::before{
  content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,18,34,.92) 30%,rgba(79,70,229,.72) 100%);
  z-index:-1;
}
.page-hero::after{
  content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='rgba(255,255,255,0.03)' fill-opacity='1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  z-index:-1;
}
.hero-content{position:relative;z-index:1;max-width:760px;margin:0 auto;text-align:center}
.hero-breadcrumb{
  display:inline-flex;align-items:center;gap:.5rem;background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.15);border-radius:50px;padding:.4rem 1.2rem;
  font-size:.85rem;color:rgba(255,255,255,.85);margin-bottom:24px;backdrop-filter:blur(6px);
}
.hero-breadcrumb a{color:rgba(255,255,255,.7)}
.hero-breadcrumb a:hover{color:#fff}
.hero-breadcrumb .sep{color:rgba(255,255,255,.45)}
.hero-content h1{
  font-size:2.9rem;font-weight:800;color:#fff;line-height:1.25;margin-bottom:20px;
  letter-spacing:1px;
}
.hero-content h1 .highlight{
  background:linear-gradient(90deg,var(--secondary),#7dd3fc);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-content p{
  color:rgba(255,255,255,.78);font-size:1.12rem;line-height:1.8;
  margin-bottom:32px;max-width:600px;margin-left:auto;margin-right:auto;
}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
/* Stats */
.stats-bar{
  margin-top:-58px;position:relative;z-index:5;
}
.stats-card{
  background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);
  padding:1.8rem 1.5rem;text-align:center;height:100%;border:1px solid rgba(255,255,255,.6);
  transition:var(--transition);
}
.stats-card:hover{
  transform:translateY(-6px);box-shadow:var(--shadow-lg);
}
.stats-icon{
  width:52px;height:52px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-size:1.25rem;margin:0 auto 14px;
}
.stats-icon.purple{background:var(--primary-light);color:var(--primary)}
.stats-icon.cyan{background:#e0f2fe;color:#0284c7}
.stats-icon.green{background:#d1fae5;color:#059669}
.stats-icon.orange{background:#fef3c7;color:#d97706}
.stats-num{
  font-size:2.1rem;font-weight:800;color:var(--dark);line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.stats-label{color:var(--text-muted);font-size:.92rem;margin-top:4px}
/* Features */
.features-section{position:relative}
.feature-card{
  background:#fff;border-radius:var(--radius-lg);overflow:hidden;height:100%;
  box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:var(--transition);
}
.feature-card:hover{
  transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent;
}
.feature-media{
  height:180px;overflow:hidden;position:relative;
}
.feature-media img{
  width:100%;height:100%;object-fit:cover;transition:transform .6s ease;
}
.feature-card:hover .feature-media img{transform:scale(1.06)}
.feature-media::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,18,34,0) 45%,rgba(11,18,34,.42) 100%);
}
.feature-tag{
  position:absolute;bottom:14px;left:18px;z-index:2;background:rgba(255,255,255,.92);
  color:var(--primary);font-size:.75rem;font-weight:700;padding:.25rem .8rem;border-radius:50px;
  backdrop-filter:blur(4px);
}
.feature-body{padding:1.4rem 1.5rem 1.6rem}
.feature-body h3{font-size:1.18rem;font-weight:700;color:var(--dark);margin-bottom:.55rem}
.feature-body p{color:var(--text-muted);font-size:.92rem;line-height:1.65;margin-bottom:.9rem}
.feature-link{
  font-size:.9rem;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:.35rem;
}
.feature-link:hover{gap:.55rem;color:var(--primary-dark)}
/* Process */
.process-section{
  background:var(--dark);position:relative;overflow:hidden;
}
.process-section::before{
  content:'';position:absolute;top:-120px;right:-120px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(79,70,229,.3),transparent 70%);border-radius:50%;
}
.process-section::after{
  content:'';position:absolute;bottom:-100px;left:-100px;width:260px;height:260px;
  background:radial-gradient(circle,rgba(14,165,233,.2),transparent 70%);border-radius:50%;
}
.process-section .section-title{color:#fff}
.process-section .section-desc{color:rgba(255,255,255,.65)}
.process-step{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-lg);padding:2rem 1.5rem;height:100%;position:relative;
  backdrop-filter:blur(8px);transition:var(--transition);
}
.process-step:hover{background:rgba(255,255,255,.12);transform:translateY(-4px)}
.step-num{
  font-size:2.4rem;font-weight:800;color:rgba(255,255,255,.15);line-height:1;
  position:absolute;top:18px;right:22px;
}
.step-icon{
  width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;margin-bottom:18px;
}
.step-icon.purple{background:rgba(79,70,229,.3);color:#a5b4fc}
.step-icon.cyan{background:rgba(14,165,233,.25);color:#7dd3fc}
.step-icon.green{background:rgba(16,185,129,.25);color:#6ee7b7}
.step-icon.orange{background:rgba(245,158,11,.25);color:#fcd34d}
.process-step h3{color:#fff;font-size:1.1rem;font-weight:700;margin-bottom:.5rem}
.process-step p{color:rgba(255,255,255,.6);font-size:.88rem;line-height:1.65}
.process-arrow{
  position:absolute;top:50%;right:-22px;transform:translateY(-50%);color:var(--secondary);
  font-size:1rem;z-index:3;opacity:.7;
}
/* News */
.news-card{
  background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  border:1px solid var(--border);overflow:hidden;transition:var(--transition);height:100%;
  display:flex;flex-direction:column;
}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.news-media{position:relative;height:170px;overflow:hidden;flex-shrink:0}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .news-media img{transform:scale(1.05)}
.news-badge{
  position:absolute;top:12px;left:12px;z-index:2;background:rgba(79,70,229,.9);
  color:#fff;font-size:.75rem;font-weight:600;padding:.25rem .8rem;border-radius:50px;
}
.news-body{padding:1.3rem 1.4rem;flex:1;display:flex;flex-direction:column}
.news-meta{
  display:flex;align-items:center;gap:.8rem;font-size:.8rem;color:var(--text-muted);
  margin-bottom:.6rem;
}
.news-meta i{color:var(--primary);font-size:.75rem}
.news-body h3{font-size:1.05rem;font-weight:700;color:var(--dark);line-height:1.45;margin-bottom:.5rem}
.news-body p{
  font-size:.9rem;color:var(--text-muted);line-height:1.6;margin-bottom:1rem;flex:1;
}
.news-more{
  display:inline-flex;align-items:center;gap:.4rem;font-size:.9rem;font-weight:600;
  color:var(--primary);align-self:flex-start;
}
.news-more:hover{gap:.6rem;color:var(--primary-dark)}
/* Tips */
.tips-section{background:#fff}
.tips-wrap{
  background:var(--body-bg);border-radius:var(--radius-lg);border:1px solid var(--border);
  padding:2.5rem;height:100%;
}
.tips-wrap h3{
  font-size:1.3rem;font-weight:700;color:var(--dark);margin-bottom:1.5rem;
  display:flex;align-items:center;gap:.6rem;
}
.tips-wrap h3 i{color:var(--secondary)}
.tips-list li{
  display:flex;align-items:flex-start;gap:.8rem;padding:.7rem 0;
  border-bottom:1px dashed var(--border);font-size:.95rem;color:var(--text);
  line-height:1.6;
}
.tips-list li:last-child{border-bottom:0}
.tips-list li .check{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;background:#d1fae5;
  color:#059669;display:flex;align-items:center;justify-content:center;
  font-size:.68rem;margin-top:3px;
}
/* FAQ */
.faq-accordion .accordion-item{
  border:1px solid var(--border);border-radius:var(--radius-md) !important;
  margin-bottom:1rem;overflow:hidden;background:#fff;box-shadow:var(--shadow-sm);
}
.faq-accordion .accordion-button{
  font-weight:600;color:var(--dark);font-size:1rem;padding:1.1rem 1.4rem;
  background:#fff;border-radius:var(--radius-md) !important;
}
.faq-accordion .accordion-button:not(.collapsed){
  background:var(--primary-light);color:var(--primary);box-shadow:none;
}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:var(--primary)}
.faq-accordion .accordion-button::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%234f46e5'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.faq-accordion .accordion-body{
  color:var(--text-muted);font-size:.95rem;line-height:1.75;padding:0 1.4rem 1.2rem;
}
/* CTA */
.cta-section{
  position:relative;padding:80px 0;background:var(--dark);
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;isolation:isolate;
}
.cta-section::before{
  content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(11,18,34,.9) 30%,rgba(79,70,229,.75) 100%);
  z-index:-1;
}
.cta-inner{text-align:center;max-width:680px;margin:0 auto}
.cta-inner h2{color:#fff;font-size:2rem;font-weight:800;margin-bottom:16px}
.cta-inner p{color:rgba(255,255,255,.75);font-size:1.05rem;line-height:1.75;margin-bottom:30px}
/* Footer */
.site-footer{
  background:var(--dark-2);color:rgba(255,255,255,.7);padding:60px 0 0;
  border-top:1px solid rgba(255,255,255,.06);
}
.footer-brand{
  display:flex;align-items:center;gap:.6rem;font-size:1.2rem;font-weight:700;color:#fff;
  margin-bottom:14px;
}
.footer-brand .brand-icon{
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  border-radius:10px;font-size:.95rem;color:#fff;
}
.site-footer p{font-size:.92rem;line-height:1.7;color:rgba(255,255,255,.6)}
.site-footer h4{
  color:#fff;font-size:1.02rem;font-weight:700;margin-bottom:1rem;
  position:relative;padding-bottom:.6rem;
}
.site-footer h4::after{
  content:'';position:absolute;bottom:0;left:0;width:24px;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:4px;
}
.footer-links{display:flex;flex-direction:column;gap:.55rem}
.footer-links a{
  color:rgba(255,255,255,.6);font-size:.92rem;transition:var(--transition);
  display:inline-flex;align-items:center;gap:.4rem;
}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-links a::before{content:'›';color:var(--secondary)}
.footer-tech{
  font-size:.88rem;color:rgba(255,255,255,.5);display:block;padding:.2rem 0;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:40px;padding:1.2rem 0;
  text-align:center;
}
.footer-bottom p{font-size:.85rem;color:rgba(255,255,255,.45);margin:0}
/* Back to top */
.back-top{
  position:fixed;bottom:30px;right:30px;width:44px;height:44px;border-radius:50%;
  background:var(--primary);color:#fff;border:0;display:flex;align-items:center;
  justify-content:center;font-size:1rem;box-shadow:var(--shadow-md);z-index:999;
  opacity:0;visibility:hidden;transition:var(--transition);
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--primary-dark);transform:translateY(-3px)}
/* Responsive */
@media(max-width:991px){
  .navbar-collapse{
    background:var(--dark-2);border-radius:16px;padding:1rem;
    margin-top:.8rem;border:1px solid rgba(255,255,255,.08);
  }
  .navbar .nav-link{padding:.6rem 1rem}
  .mega-menu{min-width:100%;margin-top:.6rem !important}
  .section-pad{padding:70px 0}
  .hero-content h1{font-size:2.2rem}
  .process-arrow{display:none}
  .process-step{margin-bottom:20px}
}
@media(max-width:768px){
  .section-pad{padding:55px 0}
  .section-title{font-size:1.6rem}
  .hero-content h1{font-size:1.8rem}
  .page-hero{padding:90px 0 100px}
  .stats-card{padding:1.3rem 1rem}
  .stats-num{font-size:1.6rem}
  .tips-wrap{padding:1.5rem}
  .cta-inner h2{font-size:1.6rem}
  .back-top{right:16px;bottom:16px;width:38px;height:38px}
}
@media(max-width:520px){
  .hero-content h1{font-size:1.55rem}
  .hero-btns .btn{width:100%;margin-bottom:8px}
  .section-title{font-size:1.4rem}
  .feature-media{height:150px}
  .news-media{height:140px}
  .brand-text{font-size:1rem}
  .brand-text .brand-icon{width:34px;height:34px;font-size:.85rem}
}