/* roulang page: index */
:root {
  --primary: #0d1b2a;
  --primary-soft: #132638;
  --primary-light: #1b3a52;
  --accent: #f5a623;
  --accent-dark: #d99415;
  --accent-light: #fdeed2;
  --bg-light: #f2f5f9;
  --bg-white: #ffffff;
  --text-main: #172238;
  --text-secondary: #52627a;
  --text-muted: #8b9ab0;
  --border-color: #e2e8f0;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-sm: 8px;
  --shadow-xs: 0 1px 4px rgba(13, 27, 42, 0.05);
  --shadow-sm: 0 2px 12px rgba(13, 27, 42, 0.06);
  --shadow-md: 0 8px 30px rgba(13, 27, 42, 0.09);
  --shadow-lg: 0 20px 50px rgba(13, 27, 42, 0.14);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-body);
  color: var(--text-main);
  background-color: var(--bg-light);
  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);
}
a:hover {
  color: var(--accent-dark);
}
ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
.container {
  max-width: 1240px;
  padding-left: 20px;
  padding-right: 20px;
}
section {
  position: relative;
}
.section-pad {
  padding: 100px 0;
}
.section-pad-sm {
  padding: 70px 0;
}
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
.section-tag i {
  font-size: 12px;
}
.section-header h2 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.section-header p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}
@media (max-width: 768px) {
  .section-pad {
    padding: 64px 0;
  }
  .section-header h2 {
    font-size: 28px;
  }
}
.btn {
  border-radius: 10px;
  font-weight: 600;
  padding: 12px 28px;
  transition: var(--transition);
  border: none;
  letter-spacing: 0.01em;
}
.btn:focus, .btn:focus-visible {
  outline: 3px solid rgba(245, 166, 35, 0.4);
  box-shadow: none;
}
.btn-primary-custom {
  background: var(--accent);
  color: var(--primary);
  border: none;
  box-shadow: 0 4px 14px rgba(245, 166, 35, 0.3);
}
.btn-primary-custom:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 166, 35, 0.4);
}
.btn-outline-custom {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  color: #fff;
}
.btn-outline-custom:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: translateY(-2px);
}
.btn-dark-custom {
  background: var(--primary);
  color: #fff;
}
.btn-dark-custom:hover {
  background: var(--primary-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-accent-outline {
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent-dark);
}
.btn-accent-outline:hover {
  background: var(--accent);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 166, 35, 0.25);
}
.site-header {
  background: rgba(13, 27, 42, 0.95);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.site-header .navbar {
  padding: 0;
  min-height: 72px;
}
.site-header .navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.01em;
  padding: 0;
  margin: 0;
}
.site-header .navbar-brand i {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 17px;
  box-shadow: 0 4px 12px rgba(245, 166, 35, 0.3);
}
.site-header .navbar-brand span {
  color: #fff;
}
.site-header .navbar-nav {
  gap: 4px;
  margin-left: auto;
  margin-right: auto;
}
.site-header .nav-link {
  color: rgba(255, 255, 255, 0.75) !important;
  font-size: 15px;
  font-weight: 500;
  padding: 10px 16px !important;
  border-radius: 8px;
  transition: var(--transition);
}
.site-header .nav-link:hover {
  color: #fff !important;
  background: rgba(255, 255, 255, 0.08);
}
.site-header .nav-link.active {
  color: var(--accent) !important;
  font-weight: 600;
  background: rgba(245, 166, 35, 0.12);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.search-box {
  position: relative;
}
.search-box input {
  width: 180px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 30px;
  padding: 0 14px 0 38px;
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.search-box input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}
.search-box input:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.16);
  width: 210px;
}
.search-box i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  pointer-events: none;
}
.btn-login {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 30px;
  transition: var(--transition);
}
.btn-login:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}
.btn-start {
  background: var(--accent);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 22px;
  border-radius: 30px;
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(245, 166, 35, 0.3);
}
.btn-start:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 166, 35, 0.4);
  color: var(--primary);
}
.navbar-toggler {
  border: none;
  background: transparent;
  padding: 6px;
}
.navbar-toggler:focus {
  box-shadow: none;
}
.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(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
@media (max-width: 991.98px) {
  .site-header .navbar-collapse {
    background: var(--primary);
    border-radius: var(--radius);
    padding: 20px;
    margin-top: 10px;
    border: 1px solid rgba(255, 255, 255, 0.08);
  }
  .site-header .navbar-nav {
    margin: 0 0 16px 0;
    gap: 4px;
  }
  .site-header .nav-link {
    padding: 12px 14px !important;
  }
  .nav-actions {
    flex-wrap: wrap;
    gap: 10px;
  }
  .search-box {
    flex: 1 1 100%;
  }
  .search-box input {
    width: 100% !important;
  }
  .search-box input:focus {
    width: 100% !important;
  }
}
@media (max-width: 520px) {
  .nav-actions .btn-login, .nav-actions .btn-start {
    flex: 1;
    text-align: center;
  }
}
.hero-section {
  position: relative;
  min-height: 680px;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 100px 0;
  background: var(--primary);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center center;
  opacity: 0.35;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(13, 27, 42, 0.97) 0%, rgba(13, 27, 42, 0.88) 45%, rgba(13, 27, 42, 0.55) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 166, 35, 0.15);
  border: 1px solid rgba(245, 166, 35, 0.35);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 30px;
  margin-bottom: 22px;
  letter-spacing: 0.02em;
}
.hero-badge i {
  font-size: 12px;
}
.hero-section h1 {
  font-size: 52px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.hero-section .lead {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 600px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}
.hero-actions .btn {
  padding: 14px 36px;
  font-size: 16px;
}
.hero-quick-list {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 28px;
}
.hero-quick-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  font-weight: 500;
}
.hero-quick-list li i {
  color: var(--accent);
  font-size: 16px;
}
.hero-score-card {
  position: absolute;
  right: 20px;
  bottom: 60px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  min-width: 260px;
}
.hero-score-card .score-label {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
}
.hero-score-card .score-value {
  color: var(--accent);
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 6px;
}
.hero-score-card .score-desc {
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
}
@media (max-width: 768px) {
  .hero-section {
    min-height: 560px;
    padding: 70px 0;
  }
  .hero-section h1 {
    font-size: 32px;
  }
  .hero-section .lead {
    font-size: 16px;
  }
  .hero-actions .btn {
    padding: 12px 28px;
    font-size: 14px;
  }
  .hero-score-card {
    position: static;
    margin-top: 30px;
    max-width: 100%;
  }
  .hero-quick-list {
    gap: 14px;
  }
}
.quick-actions-section {
  margin-top: -40px;
  position: relative;
  z-index: 5;
}
.quick-actions-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 36px 32px;
  text-align: center;
  height: 100%;
  border: 1px solid rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}
.quick-actions-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(13, 27, 42, 0.16);
}
.quick-actions-card .icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin: 0 auto 18px;
  transition: var(--transition);
}
.quick-actions-card:nth-child(1) .icon-wrap {
  background: rgba(245, 166, 35, 0.15);
  color: var(--accent-dark);
}
.quick-actions-card:nth-child(2) .icon-wrap {
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
}
.quick-actions-card:nth-child(3) .icon-wrap {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}
.quick-actions-card:nth-child(4) .icon-wrap {
  background: rgba(139, 92, 246, 0.1);
  color: #8b5cf6;
}
.quick-actions-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.quick-actions-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}
.about-section {
  background: var(--bg-white);
}
.about-section .section-content {
  padding-right: 20px;
}
.about-section .section-content h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}
.about-section .section-content p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 16px;
}
.about-list {
  margin-top: 24px;
}
.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  color: var(--text-main);
  font-weight: 500;
  font-size: 15px;
}
.about-list li i {
  color: var(--accent);
  font-size: 18px;
  margin-top: 4px;
  flex-shrink: 0;
}
.about-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 420px;
}
.about-image-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(13, 27, 42, 0.2) 100%);
  pointer-events: none;
}
.about-badge {
  position: absolute;
  left: 24px;
  bottom: 24px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 12px 22px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-md);
}
.about-badge i {
  color: var(--accent);
  font-size: 22px;
}
.about-badge span {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}
@media (max-width: 991.98px) {
  .about-section .section-content {
    padding-right: 0;
    margin-bottom: 40px;
  }
  .about-image-wrap img {
    min-height: 320px;
  }
}
.features-section {
  background: var(--bg-light);
}
.feature-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 32px 28px;
  height: 100%;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: rgba(245, 166, 35, 0.3);
}
.feature-card .feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
  background: var(--accent-light);
  color: var(--accent-dark);
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}
.category-section {
  background: var(--bg-white);
}
.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  min-height: 300px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: block;
}
.category-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.5s ease;
}
.category-card:hover img {
  transform: scale(1.05);
}
.category-card .card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13, 27, 42, 0.1) 0%, rgba(13, 27, 42, 0.85) 80%);
  z-index: 1;
}
.category-card .card-body {
  position: relative;
  z-index: 2;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 100%;
  min-height: inherit;
}
.category-card .category-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(245, 166, 35, 0.2);
  border: 1px solid rgba(245, 166, 35, 0.35);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
  width: fit-content;
}
.category-card h3 {
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}
.category-card p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 18px;
}
.category-card .card-link {
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.category-card .card-link i {
  transition: transform 0.3s ease;
}
.category-card:hover .card-link i {
  transform: translateX(4px);
}
.news-section {
  background: var(--bg-light);
}
.news-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 28px;
  height: 100%;
  display: block;
  transition: var(--transition);
}
.news-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: transparent;
}
.news-card .news-cat {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 10px;
}
.news-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card .news-date {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.empty-tip {
  background: var(--bg-white);
  border-radius: var(--radius);
  text-align: center;
  padding: 48px 20px;
  color: var(--text-secondary);
  font-size: 15px;
  border: 1px dashed var(--border-color);
}
.stats-section {
  background: var(--primary);
  overflow: hidden;
}
.stats-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}
.stat-block {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 20px;
}
.stat-block .stat-value {
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-block .stat-label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  font-weight: 500;
}
@media (max-width: 768px) {
  .stat-block .stat-value {
    font-size: 36px;
  }
}
.steps-section {
  background: var(--bg-white);
}
.step-item {
  position: relative;
  text-align: center;
  padding: 0 16px;
}
.step-number {
  width: 72px;
  height: 72px;
  border-radius: 22px;
  background: var(--primary);
  color: var(--accent);
  font-size: 24px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 22px;
  box-shadow: 0 8px 28px rgba(13, 27, 42, 0.2);
  position: relative;
  z-index: 1;
}
.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}
.step-item::before {
  content: "";
  position: absolute;
  top: 36px;
  left: calc(50% + 50px);
  right: calc(-50% + 50px);
  height: 2px;
  background: var(--border-color);
  z-index: 0;
}
.step-item:last-child::before {
  display: none;
}
@media (max-width: 767.98px) {
  .step-item::before {
    display: none;
  }
  .step-item {
    margin-bottom: 40px;
  }
}
.faq-section {
  background: var(--bg-light);
}
.accordion {
  max-width: 860px;
  margin: 0 auto;
}
.accordion-item {
  background: var(--bg-white);
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius) !important;
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.accordion-item:focus-within {
  border-color: rgba(245, 166, 35, 0.5) !important;
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.12);
}
.accordion-item .accordion-button {
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  background: var(--bg-white);
  border: none;
  box-shadow: none;
  letter-spacing: 0.01em;
}
.accordion-item .accordion-button:not(.collapsed) {
  color: var(--accent-dark);
  background: var(--bg-white);
  box-shadow: none;
}
.accordion-item .accordion-button:focus {
  box-shadow: none;
}
.accordion-item .accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23f5a623'%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");
}
.accordion-item .accordion-body {
  padding: 0 28px 24px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px dashed var(--border-color);
  padding-top: 16px;
}
.cta-section {
  background: var(--primary);
  position: relative;
  overflow: hidden;
  padding: 90px 0;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
}
.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}
.cta-content h2 {
  color: #fff;
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.cta-content p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 17px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.cta-content .btn {
  padding: 15px 42px;
  font-size: 16px;
}
@media (max-width: 768px) {
  .cta-content h2 {
    font-size: 28px;
  }
  .cta-content p {
    font-size: 15px;
  }
}
.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.65);
  padding: 70px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.site-footer .footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.site-footer .footer-brand i {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
}
.site-footer .footer-brand span {
  color: #fff;
  font-size: 20px;
  font-weight: 800;
}
.site-footer p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 0;
}
.site-footer h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
}
.site-footer ul li {
  margin-bottom: 12px;
}
.site-footer ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}
.site-footer ul li a:hover {
  color: var(--accent);
}
.site-footer ul li i {
  margin-right: 8px;
  color: var(--accent);
  font-size: 14px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 50px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}
@media (max-width: 768px) {
  .site-footer {
    padding: 50px 0 24px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
      --primary: #0d2b45;
      --primary-light: #16456f;
      --primary-dark: #081d30;
      --accent: #0ea5e9;
      --accent-dark: #0284c7;
      --accent-light: #e0f2fe;
      --success: #10b981;
      --warning: #f59e0b;
      --bg: #f5f8fb;
      --bg-white: #ffffff;
      --text: #1e293b;
      --text-muted: #64748b;
      --border: #e2e8f0;
      --radius-lg: 20px;
      --radius-md: 14px;
      --radius-sm: 10px;
      --shadow-sm: 0 2px 8px rgba(13, 43, 69, 0.06);
      --shadow-md: 0 10px 30px rgba(13, 43, 69, 0.08);
      --shadow-lg: 0 20px 50px rgba(13, 43, 69, 0.12);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --spacing-section: 90px;
      --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

    /* ===== 基础 Reset ===== */
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-family);
      background: var(--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);
    }

    button,
    input {
      font-family: inherit;
    }

    .container {
      max-width: 1200px;
    }

    /* ===== 导航 Header ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 4px 20px rgba(13, 43, 69, 0.04);
    }

    .site-header .navbar {
      padding: 14px 0;
    }

    .navbar-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--primary);
      letter-spacing: 0.5px;
    }

    .navbar-brand i {
      font-size: 1.7rem;
      color: var(--accent);
      background: var(--accent-light);
      border-radius: 12px;
      padding: 8px;
      transition: var(--transition);
    }

    .navbar-brand:hover {
      color: var(--primary);
    }

    .navbar-brand:hover i {
      background: var(--accent);
      color: #fff;
      transform: rotate(-6deg) scale(1.05);
    }

    .navbar-nav {
      gap: 6px;
      margin-left: 24px;
    }

    .nav-link {
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--text) !important;
      padding: 9px 16px !important;
      border-radius: 10px;
      position: relative;
    }

    .nav-link::after {
      content: "";
      position: absolute;
      bottom: 4px;
      left: 16px;
      right: 16px;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
      transform: scaleX(0);
      transform-origin: center;
      transition: transform 0.3s ease;
    }

    .nav-link:hover {
      color: var(--accent) !important;
      background: rgba(14, 165, 233, 0.06);
    }

    .nav-link:hover::after {
      transform: scaleX(0.6);
    }

    .nav-link.active {
      color: var(--accent) !important;
      background: var(--accent-light);
      font-weight: 600;
    }

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

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-left: auto;
    }

    .search-box {
      display: flex;
      align-items: center;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 7px 14px;
      gap: 8px;
      width: 210px;
      transition: var(--transition);
    }

    .search-box:focus-within {
      border-color: var(--accent);
      background: #fff;
      box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.12);
    }

    .search-box i {
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    .search-box input {
      border: none;
      outline: none;
      background: transparent;
      font-size: 0.87rem;
      color: var(--text);
      width: 100%;
    }

    .search-box input::placeholder {
      color: #94a3b8;
    }

    .btn-login {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 0.9rem;
      padding: 8px 20px;
      border-radius: 12px;
      color: var(--primary);
      background: transparent;
      border: 1.5px solid var(--border);
      transition: var(--transition);
    }

    .btn-login:hover {
      border-color: var(--accent);
      color: var(--accent);
      background: var(--accent-light);
    }

    .btn-start {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 0.9rem;
      padding: 9px 22px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--accent), #2563eb);
      color: #fff;
      border: none;
      box-shadow: 0 6px 18px rgba(37, 99, 235, 0.28);
      transition: var(--transition);
    }

    .btn-start:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(37, 99, 235, 0.35);
      color: #fff;
    }

    .btn-start:active {
      transform: translateY(0);
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }

    .navbar-toggler {
      border: none;
      padding: 6px 10px;
      border-radius: 10px;
      background: var(--bg);
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
    }

    /* ===== 页面 Hero ===== */
    .page-hero {
      position: relative;
      padding: 90px 0 80px;
      background: linear-gradient(135deg, rgba(8, 29, 48, 0.92), rgba(13, 43, 69, 0.85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      color: #fff;
      overflow: hidden;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      top: -60px;
      right: -80px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(14, 165, 233, 0.25), transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

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

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
      backdrop-filter: blur(8px);
      padding: 6px 16px;
      border-radius: 100px;
      font-size: 0.82rem;
      font-weight: 500;
      margin-bottom: 20px;
      color: rgba(255, 255, 255, 0.9);
    }

    .hero-badge i {
      color: var(--accent);
    }

    .page-hero h1 {
      font-size: 2.6rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: 1px;
    }

    .page-hero h1 span {
      color: var(--accent);
    }

    .page-hero .lead {
      font-size: 1.1rem;
      color: rgba(255, 255, 255, 0.85);
      max-width: 640px;
      margin-bottom: 28px;
    }

    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .hero-meta .btn-primary-custom {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--accent), #2563eb);
      border: none;
      color: #fff;
      font-weight: 600;
      padding: 13px 28px;
      border-radius: 14px;
      box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
      transition: var(--transition);
    }

    .hero-meta .btn-primary-custom:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(37, 99, 235, 0.4);
      color: #fff;
    }

    .hero-meta .btn-outline-custom {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      border: 1.5px solid rgba(255, 255, 255, 0.4);
      color: #fff;
      font-weight: 500;
      padding: 13px 26px;
      border-radius: 14px;
      transition: var(--transition);
    }

    .hero-meta .btn-outline-custom:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #fff;
      color: #fff;
    }

    .breadcrumb-area {
      margin-top: 32px;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      color: rgba(255, 255, 255, 0.6);
    }

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

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

    .breadcrumb-area .sep {
      opacity: 0.5;
    }

    /* ===== 通用板块间距 ===== */
    .section-block {
      padding: var(--spacing-section) 0;
    }

    .section-block--alt {
      background: var(--bg-white);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .section-head {
      margin-bottom: 48px;
    }

    .section-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent);
      font-weight: 700;
      font-size: 0.85rem;
      letter-spacing: 2px;
      text-transform: uppercase;
      margin-bottom: 12px;
    }

    .section-eyebrow::before {
      content: "";
      width: 24px;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .section-subtitle {
      color: var(--text-muted);
      font-size: 1rem;
      max-width: 560px;
    }

    /* ===== 登录方式卡片 ===== */
    .login-way-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      height: 100%;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .login-way-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--accent), transparent);
      opacity: 0;
      transition: var(--transition);
    }

    .login-way-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: transparent;
    }

    .login-way-card:hover::before {
      opacity: 1;
    }

    .login-way-card .card-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 20px;
      height: 180px;
    }

    .login-way-card .card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .login-way-card:hover .card-img-wrap img {
      transform: scale(1.05);
    }

    .login-way-card .way-icon {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: var(--accent-light);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      margin-bottom: 16px;
    }

    .login-way-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .login-way-card p {
      color: var(--text-muted);
      font-size: 0.92rem;
      margin-bottom: 16px;
      line-height: 1.7;
    }

    .login-way-card .way-link {
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .login-way-card .way-link i {
      transition: transform 0.3s ease;
    }

    .login-way-card .way-link:hover i {
      transform: translateX(4px);
    }

    /* ===== 步骤引导 ===== */
    .step-guide {
      background: var(--bg-white);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .step-track {
      position: relative;
      padding: 20px 0;
    }

    .step-track::before {
      content: "";
      position: absolute;
      top: 60px;
      bottom: 60px;
      left: 50%;
      width: 2px;
      background: linear-gradient(180deg, var(--accent-light), var(--accent), var(--accent-light));
      transform: translateX(-50%);
    }

    .step-item {
      display: flex;
      align-items: flex-start;
      margin-bottom: 40px;
      position: relative;
    }

    .step-item:nth-child(odd) {
      flex-direction: row-reverse;
    }

    .step-item:nth-child(odd) .step-content {
      text-align: right;
      padding-right: 60px;
      padding-left: 0;
    }

    .step-item:nth-child(even) .step-content {
      padding-left: 60px;
    }

    .step-num {
      flex-shrink: 0;
      width: 72px;
      height: 72px;
      border-radius: 50%;
      background: var(--bg-white);
      border: 3px solid var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--accent);
      z-index: 2;
      box-shadow: 0 0 0 6px rgba(14, 165, 233, 0.08);
    }

    .step-content {
      flex: 1;
      padding: 8px 0 8px 60px;
    }

    .step-content h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .step-content p {
      color: var(--text-muted);
      font-size: 0.93rem;
      line-height: 1.7;
      max-width: 420px;
    }

    /* ===== 安全提示 ===== */
    .security-section {
      background: linear-gradient(135deg, #0b2440, #0d2b45, #12375c);
      color: #fff;
      padding: var(--spacing-section) 0;
      position: relative;
      overflow: hidden;
    }

    .security-section::before {
      content: "";
      position: absolute;
      top: -100px;
      right: -100px;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(14, 165, 233, 0.3), transparent 70%);
      border-radius: 50%;
    }

    .security-content {
      max-width: 620px;
    }

    .security-content .section-title {
      color: #fff;
    }

    .security-content .section-subtitle {
      color: rgba(255, 255, 255, 0.7);
    }

    .security-list {
      list-style: none;
      padding: 0;
      margin: 24px 0 0;
    }

    .security-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 10px 0;
      color: rgba(255, 255, 255, 0.85);
      font-size: 0.95rem;
    }

    .security-list li i {
      color: var(--success);
      background: rgba(16, 185, 129, 0.15);
      border-radius: 50%;
      padding: 5px;
      font-size: 0.7rem;
      flex-shrink: 0;
      margin-top: 4px;
    }

    .security-image {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
    }

    .security-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 320px;
    }

    .security-image::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 50%, rgba(8, 29, 48, 0.5));
      pointer-events: none;
    }

    .security-flag {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background: rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(10px);
      border-radius: 14px;
      padding: 12px 18px;
      z-index: 2;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .security-flag i {
      color: var(--accent);
      font-size: 1.3rem;
    }

    .security-flag span {
      font-size: 0.85rem;
      font-weight: 600;
    }

    /* ===== 数据统计 ===== */
    .stats-section {
      background: var(--bg);
    }

    .stat-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 36px 24px;
      text-align: center;
      transition: var(--transition);
      height: 100%;
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent-light);
    }

    .stat-card .stat-icon {
      font-size: 2.2rem;
      color: var(--accent);
      margin-bottom: 16px;
      display: block;
    }

    .stat-card .stat-number {
      font-size: 2.3rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }

    .stat-card .stat-label {
      color: var(--text-muted);
      font-size: 0.92rem;
      margin-top: 8px;
    }

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

    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      transition: var(--transition);
    }

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

    .faq-item summary {
      padding: 20px 24px;
      cursor: pointer;
      font-weight: 600;
      font-size: 1rem;
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

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

    .faq-item summary::after {
      content: "+";
      font-size: 1.5rem;
      color: var(--accent);
      font-weight: 500;
      flex-shrink: 0;
      transition: transform 0.3s ease;
    }

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

    .faq-item .faq-answer {
      padding: 0 24px 22px;
      color: var(--text-muted);
      font-size: 0.93rem;
      line-height: 1.8;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: linear-gradient(135deg, #0d2b45, #16456f);
      color: #fff;
      padding: 70px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      top: -60px;
      left: -60px;
      width: 250px;
      height: 250px;
      background: radial-gradient(circle, rgba(14, 165, 233, 0.3), transparent 70%);
      border-radius: 50%;
    }

    .cta-section h2 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .cta-section p {
      color: rgba(255, 255, 255, 0.75);
      max-width: 560px;
      margin: 0 auto 28px;
      font-size: 1rem;
    }

    .cta-btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: linear-gradient(135deg, var(--accent), #2563eb);
      border: none;
      color: #fff;
      font-weight: 600;
      padding: 14px 32px;
      border-radius: 14px;
      box-shadow: 0 10px 30px rgba(37, 99, 235, 0.35);
      transition: var(--transition);
    }

    .cta-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 36px rgba(37, 99, 235, 0.45);
      color: #fff;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: #081d30;
      color: rgba(255, 255, 255, 0.75);
      padding: 70px 0 0;
    }

    .site-footer .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.3rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }

    .site-footer .footer-brand i {
      color: var(--accent);
      font-size: 1.5rem;
    }

    .site-footer .footer-brand span {
      color: #fff;
    }

    .site-footer p {
      font-size: 0.9rem;
      line-height: 1.7;
      color: rgba(255, 255, 255, 0.6);
      max-width: 320px;
    }

    .site-footer h4 {
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .site-footer ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .site-footer ul li {
      margin-bottom: 10px;
      font-size: 0.9rem;
    }

    .site-footer ul li a {
      color: rgba(255, 255, 255, 0.65);
    }

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

    .site-footer ul li i {
      margin-right: 8px;
      color: var(--accent);
      font-size: 0.85rem;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      margin-top: 50px;
      padding: 22px 0;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 8px;
    }

    .footer-bottom p {
      font-size: 0.82rem;
      margin: 0;
      color: rgba(255, 255, 255, 0.45);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .search-box {
        width: 170px;
      }
      .page-hero h1 {
        font-size: 2.2rem;
      }
      .step-track::before {
        left: 36px;
      }
      .step-item,
      .step-item:nth-child(odd) {
        flex-direction: row;
      }
      .step-item .step-content,
      .step-item:nth-child(odd) .step-content {
        text-align: left;
        padding: 0 0 0 40px;
      }
      .step-num {
        width: 60px;
        height: 60px;
        font-size: 1.2rem;
      }
      .security-image {
        margin-top: 30px;
      }
    }

    @media (max-width: 768px) {
      :root {
        --spacing-section: 60px;
      }
      .site-header .navbar {
        padding: 10px 0;
      }
      .navbar-collapse {
        background: #fff;
        border-radius: 16px;
        padding: 20px;
        margin-top: 14px;
        box-shadow: var(--shadow-lg);
        border: 1px solid var(--border);
      }
      .navbar-nav {
        margin: 0 0 16px;
      }
      .nav-actions {
        flex-wrap: wrap;
        width: 100%;
        margin: 0;
      }
      .search-box {
        width: 100%;
        order: -1;
      }
      .btn-login,
      .btn-start {
        flex: 1;
      }
      .page-hero {
        padding: 60px 0 50px;
      }
      .page-hero h1 {
        font-size: 1.8rem;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .step-track::before {
        display: none;
      }
      .step-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        margin-bottom: 28px;
      }
      .step-item:nth-child(odd) {
        flex-direction: column;
      }
      .step-item .step-content,
      .step-item:nth-child(odd) .step-content {
        text-align: center;
        padding: 16px 0 0;
      }
      .step-item .step-content p {
        margin: 0 auto;
      }
      .security-image {
        min-height: 240px;
      }
      .cta-section h2 {
        font-size: 1.6rem;
      }
    }

    @media (max-width: 520px) {
      :root {
        --spacing-section: 48px;
      }
      .navbar-brand {
        font-size: 1.1rem;
      }
      .navbar-brand i {
        font-size: 1.2rem;
        padding: 6px;
      }
      .page-hero h1 {
        font-size: 1.5rem;
      }
      .page-hero .lead {
        font-size: 0.95rem;
      }
      .hero-meta {
        flex-direction: column;
        align-items: stretch;
      }
      .hero-meta .btn-primary-custom,
      .hero-meta .btn-outline-custom {
        justify-content: center;
      }
      .section-head {
        margin-bottom: 30px;
      }
      .section-title {
        font-size: 1.35rem;
      }
      .login-way-card {
        padding: 24px 20px;
      }
      .stat-card {
        padding: 24px 18px;
      }
      .stat-card .stat-number {
        font-size: 1.8rem;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

/* roulang page: article */
:root {
    --brand: #1d4ed8;
    --brand-dark: #0d1b2a;
    --brand-light: #eef3ff;
    --accent: #f0a53c;
    --accent-dark: #d98e22;
    --bg: #f4f7fb;
    --card: #ffffff;
    --text: #1b2534;
    --muted: #62748c;
    --border: #e2e8f2;
    --radius: 18px;
    --radius-sm: 12px;
    --shadow: 0 10px 30px rgba(13, 27, 42, .08);
    --shadow-lg: 0 22px 52px rgba(13, 27, 42, .16);
    --transition: .25s ease;
}
*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0;
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input { font: inherit; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(13, 27, 42, .06);
    box-shadow: 0 4px 24px rgba(13, 27, 42, .04);
}
.navbar { padding: 12px 0; }
.navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--brand-dark);
    letter-spacing: -.5px;
}
.navbar-brand i { color: var(--accent); font-size: 1.3rem; }
.navbar-brand:hover { color: var(--brand); }
.navbar-nav .nav-link {
    padding: 9px 18px;
    font-weight: 600;
    color: var(--text);
    border-radius: 10px;
    position: relative;
    font-size: .95rem;
}
.navbar-nav .nav-link:hover { color: var(--brand); background: var(--brand-light); }
.navbar-nav .nav-link.active { color: var(--brand); background: var(--brand-light); }
.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 5px;
    height: 3px;
    border-radius: 3px;
    background: var(--brand);
}
.nav-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 30px;
    padding: 8px 16px;
    width: 220px;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.search-box:focus-within { border-color: var(--brand); box-shadow: 0 0 0 4px rgba(29, 78, 216, .1); }
.search-box i { color: var(--muted); font-size: .9rem; }
.search-box input { border: none; outline: none; background: transparent; font-size: .9rem; width: 100%; color: var(--text); }
.btn-login {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 22px;
    border: 1px solid var(--border);
    border-radius: 30px;
    font-weight: 700;
    font-size: .92rem;
    color: var(--text);
    background: #fff;
    transition: all var(--transition);
}
.btn-login:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-light); }
.btn-start {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    background: var(--brand);
    color: #fff;
    border-radius: 30px;
    font-weight: 700;
    font-size: .92rem;
    box-shadow: 0 8px 20px rgba(29, 78, 216, .25);
    transition: all var(--transition);
}
.btn-start:hover { background: #1a4ac0; color: #fff; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(29, 78, 216, .32); }
.navbar-toggler { border: 1px solid var(--border); background: var(--bg); }
.navbar-toggler:focus { box-shadow: none; border-color: var(--brand); }

.article-hero {
    position: relative;
    padding: 72px 0 64px;
    background: linear-gradient(135deg, rgba(13, 27, 42, .9), rgba(13, 27, 42, .68)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
    color: #fff;
}
.breadcrumb-line {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, .72);
    font-size: .9rem;
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.breadcrumb-line a { color: rgba(255, 255, 255, .88); }
.breadcrumb-line a:hover { color: var(--accent); }
.breadcrumb-line .sep { opacity: .6; }
.article-hero .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--accent);
    color: #0d1b2a;
    font-weight: 800;
    font-size: .85rem;
    padding: 7px 16px;
    border-radius: 30px;
    margin-bottom: 18px;
    letter-spacing: .3px;
}
.article-hero h1 {
    font-size: 2.3rem;
    line-height: 1.35;
    font-weight: 800;
    max-width: 860px;
    margin-bottom: 20px;
    letter-spacing: -.5px;
}
.hero-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    color: rgba(255, 255, 255, .8);
    font-size: .95rem;
    flex-wrap: wrap;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta i { color: var(--accent); }

.article-wrap { padding: 55px 0 75px; }
.article-main {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.article-body { padding: 40px 48px; }
.article-body p,
.article-body li,
.article-body blockquote,
.article-body td {
    font-size: 1.05rem;
    line-height: 1.95;
    color: #2b3746;
}
.article-body p { margin: 0 0 22px; }
.article-body h2 {
    font-size: 1.6rem;
    font-weight: 800;
    margin: 46px 0 18px;
    padding-left: 15px;
    border-left: 4px solid var(--brand);
    line-height: 1.4;
}
.article-body h3 {
    font-size: 1.28rem;
    font-weight: 700;
    margin: 36px 0 14px;
}
.article-body a { color: var(--brand); text-decoration: underline; text-underline-offset: 4px; }
.article-body img {
    border-radius: 16px;
    margin: 24px 0;
    box-shadow: var(--shadow);
    height: auto;
}
.article-body ul, .article-body ol { margin: 20px 0 26px; padding: 0; }
.article-body ul li {
    padding-left: 28px;
    position: relative;
    margin-bottom: 12px;
}
.article-body ul li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 1px;
    color: var(--brand);
    font-size: .95rem;
}
.article-body ol { counter-reset: item; }
.article-body ol li {
    counter-increment: item;
    padding-left: 40px;
    position: relative;
    margin-bottom: 14px;
}
.article-body ol li::before {
    content: counter(item);
    position: absolute;
    left: 0;
    top: 4px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--brand-light);
    color: var(--brand);
    font-weight: 800;
    font-size: .82rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.article-body blockquote {
    border-left: 4px solid var(--accent);
    background: #fbf6ec;
    padding: 22px 26px;
    border-radius: 0 16px 16px 0;
    margin: 30px 0;
    font-style: normal;
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 26px 0;
}
.article-body th, .article-body td {
    padding: 14px 16px;
    border: 1px solid var(--border);
    text-align: left;
    font-size: .98rem;
}
.article-body th { background: var(--brand-light); font-weight: 700; }
.article-body code {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: .92em;
    color: #c2410c;
}
.article-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 24px 48px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    background: #fbfcfe;
}
.tag-list { display: flex; gap: 10px; flex-wrap: wrap; }
.tag {
    display: inline-block;
    background: var(--brand-light);
    color: var(--brand);
    font-size: .85rem;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 30px;
    transition: background var(--transition);
}
.tag:hover { background: var(--brand); color: #fff; }
.share-btns { display: flex; gap: 8px; }
.share-btns a {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg);
    color: var(--text);
    font-size: .9rem;
    transition: all var(--transition);
}
.share-btns a:hover { background: var(--brand); color: #fff; transform: translateY(-2px); }

.not-found-card {
    padding: 80px 48px;
    text-align: center;
}
.not-found-card .not-found-icon {
    width: 76px;
    height: 76px;
    border-radius: 50%;
    background: var(--brand-light);
    color: var(--brand);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 24px;
}
.not-found-card h2 { font-size: 1.7rem; font-weight: 800; margin-bottom: 12px; }
.not-found-card p { color: var(--muted); margin-bottom: 24px; }
.btn-back-home {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--brand);
    color: #fff;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 700;
    transition: all var(--transition);
}
.btn-back-home:hover { background: #1a4ac0; color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.sidebar .widget {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px;
    margin-bottom: 26px;
}
.widget-title {
    font-size: 1.12rem;
    font-weight: 800;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--brand-dark);
}
.widget-title::before {
    content: '';
    width: 4px;
    height: 18px;
    background: var(--accent);
    border-radius: 4px;
}
.widget-links li { padding: 12px 0; border-bottom: 1px dashed var(--border); }
.widget-links li:last-child { border-bottom: none; padding-bottom: 0; }
.widget-links li:first-child { padding-top: 0; }
.widget-links a {
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: .95rem;
    transition: all var(--transition);
}
.widget-links a i { color: var(--accent); font-size: .8rem; width: 16px; }
.widget-links a:hover { color: var(--brand); padding-left: 6px; }
.help-card {
    background: linear-gradient(135deg, #1a4480, #0d1b2a);
    color: #fff;
    border-radius: var(--radius);
    padding: 32px 28px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}
.help-card .help-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent);
    color: #0d1b2a;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 18px;
}
.help-card h4 { font-weight: 800; font-size: 1.1rem; margin-bottom: 10px; }
.help-card p { font-size: .93rem; opacity: .82; margin-bottom: 22px; line-height: 1.75; }
.help-card .btn-circle {
    display: inline-block;
    background: #fff;
    color: var(--brand);
    border-radius: 30px;
    padding: 10px 24px;
    font-weight: 700;
    font-size: .9rem;
    transition: all var(--transition);
}
.help-card .btn-circle:hover { background: var(--accent); color: #0d1b2a; transform: translateY(-2px); }

.related-section { background: #eef2f8; padding: 70px 0; }
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 36px;
    gap: 16px;
}
.section-title { font-size: 1.9rem; font-weight: 800; color: var(--brand-dark); margin: 0; }
.section-title span { color: var(--brand); }
.section-sub { color: var(--muted); font-size: .95rem; margin: 0; }
.related-card {
    background: var(--card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.related-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.related-cover { aspect-ratio: 16 / 10; overflow: hidden; }
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.related-card:hover .related-cover img { transform: scale(1.06); }
.related-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.related-meta {
    font-size: .82rem;
    color: var(--muted);
    margin-bottom: 10px;
    display: flex;
    gap: 12px;
    align-items: center;
}
.related-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--muted); }
.related-body h3 {
    font-size: 1.12rem;
    font-weight: 800;
    margin-bottom: 10px;
    line-height: 1.55;
    color: var(--brand-dark);
}
.related-body p { font-size: .92rem; color: var(--muted); margin-bottom: 16px; line-height: 1.7; flex: 1; }
.related-link {
    color: var(--brand);
    font-weight: 700;
    font-size: .92rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap var(--transition);
}
.related-link:hover { gap: 10px; color: var(--brand); }

.cta-section {
    padding: 85px 0;
    background: var(--brand-dark) url('/assets/images/backpic/back-3.png') center / cover no-repeat;
    position: relative;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(13, 27, 42, .88), rgba(29, 78, 216, .78));
}
.cta-inner { position: relative; z-index: 1; text-align: center; color: #fff; max-width: 720px; margin: 0 auto; }
.cta-inner h2 { font-size: 2.1rem; font-weight: 800; margin-bottom: 16px; letter-spacing: -.5px; }
.cta-inner p { font-size: 1.05rem; opacity: .88; margin-bottom: 30px; line-height: 1.8; }
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-cta-filled {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #0d1b2a;
    font-weight: 800;
    padding: 13px 32px;
    border-radius: 30px;
    transition: all var(--transition);
    font-size: 1rem;
}
.btn-cta-filled:hover { background: #ffb85a; color: #0d1b2a; transform: translateY(-2px); box-shadow: 0 14px 30px rgba(240, 165, 60, .3); }
.btn-cta-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(255, 255, 255, .6);
    color: #fff;
    font-weight: 700;
    padding: 13px 32px;
    border-radius: 30px;
    transition: all var(--transition);
    font-size: 1rem;
}
.btn-cta-outline:hover { background: rgba(255, 255, 255, .12); color: #fff; transform: translateY(-2px); }

.site-footer {
    background: #0a1420;
    color: rgba(255, 255, 255, .78);
    padding: 70px 0 30px;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}
.footer-brand i { color: var(--accent); }
.site-footer p { font-size: .95rem; margin-bottom: 0; line-height: 1.8; }
.site-footer h4 {
    color: #fff;
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 20px;
}
.site-footer ul li { margin-bottom: 11px; font-size: .93rem; }
.site-footer ul a { transition: color var(--transition); }
.site-footer ul a:hover { color: var(--accent); }
.site-footer ul i { color: var(--accent); width: 20px; margin-right: 6px; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    margin-top: 48px;
    padding-top: 26px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: .9rem;
    color: rgba(255, 255, 255, .5);
}

@media (max-width: 991px) {
    .nav-actions {
        margin-top: 14px;
        flex-wrap: wrap;
        width: 100%;
    }
    .search-box { flex: 1; min-width: 160px; }
    .navbar-nav .nav-link.active::after { display: none; }
    .article-hero { padding: 52px 0 46px; }
    .article-hero h1 { font-size: 1.85rem; }
    .article-body { padding: 30px 28px; }
    .article-foot { padding: 20px 28px; }
    .not-found-card { padding: 60px 28px; }
    .section-title { font-size: 1.6rem; }
    .cta-inner h2 { font-size: 1.75rem; }
}
@media (max-width: 768px) {
    .article-wrap { padding: 40px 0 55px; }
    .hero-meta { gap: 14px; }
    .cta-section { padding: 60px 0; }
    .site-footer { padding: 50px 0 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .related-section { padding: 55px 0; }
    .section-head { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
    .navbar-brand span { font-size: 1.15rem; }
    .article-hero h1 { font-size: 1.5rem; }
    .article-body { padding: 24px 18px; }
    .article-body p, .article-body li { font-size: 1rem; line-height: 1.85; }
    .article-body h2 { font-size: 1.3rem; padding-left: 12px; }
    .article-foot { padding: 18px; flex-direction: column; align-items: flex-start; }
    .widget { padding: 20px; }
    .cta-inner h2 { font-size: 1.45rem; }
    .btn-cta-filled, .btn-cta-outline { width: 100%; justify-content: center; }
    .related-cover { aspect-ratio: 16 / 9; }
}

/* roulang page: category2 */
:root {
  --primary: #14508a;
  --primary-dark: #0c3156;
  --primary-light: #eaf1fb;
  --accent: #e8a93c;
  --accent-dark: #c98c1f;
  --accent-light: #fdf3e0;
  --ink: #1e293b;
  --ink-weak: #5b6b82;
  --bg: #f4f6fb;
  --bg-deep: #0d1f35;
  --card: #ffffff;
  --line: #e5eaf2;
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 14px rgba(12,49,86,.06);
  --shadow-md: 0 10px 30px rgba(12,49,86,.1);
  --shadow-lg: 0 22px 55px rgba(12,49,86,.15);
  --space-section: 88px;
  --font-main: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s ease; }
ul, ol { padding: 0; margin: 0; list-style: none; }
button, input { font-family: inherit; }
.container { max-width: 1240px; padding-left: 20px; padding-right: 20px; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--ink); }
h1 { font-size: 2.6rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.1rem; }
p { color: var(--ink-weak); }
.text-accent { color: var(--accent) !important; }
.text-primary { color: var(--primary) !important; }
.bg-light-custom { background: var(--primary-light); }
.rounded-card { border-radius: var(--radius-md); }

/* ===== Header & Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header .navbar {
  padding-top: 0;
  padding-bottom: 0;
  min-height: 72px;
}
.site-header .navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: .5px;
}
.site-header .navbar-brand i {
  font-size: 1.6rem;
  color: var(--primary);
  background: var(--primary-light);
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}
.site-header .navbar-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: 24px;
}
.site-header .nav-link {
  padding: 10px 16px!important;
  border-radius: 999px;
  font-weight: 500;
  color: var(--ink-weak)!important;
  font-size: .95rem;
  transition: all .25s ease;
  position: relative;
}
.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: 700;
}
.site-header .nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 3px;
  border-radius: 4px;
  background: var(--accent);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 14px;
  width: 220px;
  transition: border-color .2s, box-shadow .2s;
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(20,80,138,.1);
}
.search-box i { color: var(--ink-weak); font-size: .85rem; margin-right: 8px; }
.search-box input {
  border: none;
  outline: none;
  background: transparent;
  width: 100%;
  font-size: .88rem;
  color: var(--ink);
}
.nav-actions .btn-login,
.nav-actions .btn-start {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: .88rem;
  font-weight: 600;
  border: none;
  transition: all .25s ease;
}
.nav-actions .btn-login {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-actions .btn-login:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
}
.nav-actions .btn-start {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 6px 16px rgba(233,169,60,.35);
}
.nav-actions .btn-start:hover {
  box-shadow: 0 10px 24px rgba(233,169,60,.45);
  transform: translateY(-2px);
}
.navbar-toggler {
  border: none;
  outline: none;
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--bg);
}
.navbar-toggler:focus {
  box-shadow: 0 0 0 4px rgba(20,80,138,.12);
}
.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(12,49,86,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e")!important;
}

/* ===== Page Hero (分类页Banner) ===== */
.page-hero {
  position: relative;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 96px 0;
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(12,49,86,.94) 0%, rgba(12,49,86,.72) 55%, rgba(20,80,138,.45) 100%);
  z-index: 1;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 999px;
  padding: 5px 16px;
  font-size: .82rem;
  letter-spacing: .5px;
  color: #f1e8d6;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.page-hero h1 {
  color: #fff;
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: .5px;
}
.page-hero p.lead {
  color: rgba(255,255,255,.8);
  max-width: 600px;
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 28px;
}
.page-hero .hero-stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}
.page-hero .hero-stats .stat-item {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
}
.page-hero .hero-stats .stat-item .num {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.page-hero .hero-stats .stat-item .label {
  font-size: .82rem;
  color: rgba(255,255,255,.72);
}
.breadcrumb-custom {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .84rem;
  color: rgba(255,255,255,.65);
  margin-bottom: 18px;
}
.breadcrumb-custom a { color: rgba(255,255,255,.85); }
.breadcrumb-custom a:hover { color: #fff; }
.breadcrumb-custom .sep { opacity: .5; }

/* ===== FAQ 分类标签 ===== */
.faq-filter {
  padding: 48px 0 6px;
}
.faq-filter .filter-inner {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  border: 1px solid var(--line);
}
.faq-filter .filter-label {
  font-weight: 700;
  font-size: .92rem;
  color: var(--ink);
  margin-right: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.faq-filter .filter-label i { color: var(--primary); }
.faq-filter .btn-faq-filter {
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 999px;
  padding: 7px 18px;
  font-size: .86rem;
  font-weight: 500;
  color: var(--ink-weak);
  transition: all .25s ease;
}
.faq-filter .btn-faq-filter:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}
.faq-filter .btn-faq-filter.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(20,80,138,.24);
}

/* ===== FAQ 手风琴 ===== */
.faq-section {
  padding: 28px 0 20px;
}
.faq-accordion-wrap {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  padding: 32px;
  margin-bottom: 28px;
}
.accordion-item {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
}
.accordion-item:last-child { border-bottom: none; }
.accordion-button {
  background: transparent;
  box-shadow: none;
  padding: 20px 8px;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--ink);
  border-radius: 0;
}
.accordion-button::after {
  background-image: none;
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  content: "\f078";
  font-size: .78rem;
  color: var(--primary);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--primary-light);
  transition: all .3s ease;
}
.accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
  background-color: var(--primary);
  color: #fff;
}
.accordion-button:not(.collapsed) {
  background: transparent;
  color: var(--primary);
  box-shadow: none;
}
.accordion-button:focus {
  box-shadow: none;
  border-radius: 8px;
  outline: 2px solid rgba(20,80,138,.2);
  outline-offset: 2px;
}
.accordion-body {
  padding: 0 8px 22px;
  color: var(--ink-weak);
  font-size: .96rem;
  line-height: 1.85;
  max-width: 820px;
}
.accordion-body .help-tip {
  background: var(--primary-light);
  border-radius: 10px;
  padding: 12px 16px;
  margin-top: 12px;
  font-size: .88rem;
  color: var(--primary-dark);
  border-left: 3px solid var(--primary);
}

/* ===== 解决流程 ===== */
.steps-section {
  padding: var(--space-section) 0;
}
.steps-section .section-head { text-align: center; margin-bottom: 48px; }
.steps-section .section-head .subtitle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  font-size: .92rem;
  background: var(--primary-light);
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.steps-section .section-head h2 { font-weight: 800; }
.step-card {
  position: relative;
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  padding: 38px 28px 30px;
  height: 100%;
  overflow: hidden;
  transition: all .3s ease;
}
.step-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity .3s;
}
.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.step-card:hover::before { opacity: 1; }
.step-card .step-num {
  font-size: 3.6rem;
  font-weight: 800;
  color: var(--primary-light);
  line-height: 1;
  margin-bottom: 16px;
  font-family: Georgia, serif;
}
.step-card .step-icon {
  position: absolute;
  top: 32px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-light);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.step-card h3 { font-size: 1.16rem; margin-bottom: 10px; }
.step-card p { font-size: .92rem; margin-bottom: 0; }

/* ===== 帮助卡片 ===== */
.helper-section {
  padding: 0 0 var(--space-section);
}
.helper-section .section-head { margin-bottom: 40px; }
.helper-section .section-head .subtitle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  font-size: .92rem;
  background: var(--primary-light);
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.helper-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: all .3s ease;
}
.helper-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.helper-card .helper-thumb {
  position: relative;
  height: 150px;
  overflow: hidden;
}
.helper-card .helper-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.helper-card:hover .helper-thumb img { transform: scale(1.05); }
.helper-card .helper-thumb .tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(4px);
  color: var(--primary-dark);
  font-size: .76rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
}
.helper-card .helper-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.helper-card h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 8px; }
.helper-card p { font-size: .88rem; flex: 1; margin-bottom: 16px; }
.helper-card .btn-link-custom {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: .88rem;
}
.helper-card .btn-link-custom:hover { color: var(--accent-dark); gap: 10px; }

/* ===== 安全提示（深色区块） ===== */
.security-tips {
  position: relative;
  background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  padding: 92px 0;
  color: #fff;
  overflow: hidden;
}
.security-tips::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(13,31,53,.95);
}
.security-tips .container { position: relative; z-index: 2; }
.security-tips h2 { color: #fff; font-weight: 800; margin-bottom: 10px; }
.security-tips p.lead { color: rgba(255,255,255,.7); max-width: 680px; }
.security-tips .tips-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 22px;
}
.security-tips .tip-item {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  padding: 26px;
  backdrop-filter: blur(6px);
  transition: all .3s ease;
}
.security-tips .tip-item:hover { background: rgba(255,255,255,.1); transform: translateY(-4px); }
.security-tips .tip-item .tip-icon {
  width: 42px;
  height: 42px;
  background: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #fff;
  margin-bottom: 14px;
}
.security-tips .tip-item h4 { color: #fff; font-size: 1rem; margin-bottom: 6px; }
.security-tips .tip-item p { color: rgba(255,255,255,.65); font-size: .86rem; margin-bottom: 0; }

/* ===== CTA ===== */
.cta-section {
  padding: var(--space-section) 0;
}
.cta-card {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius-lg);
  padding: 58px 48px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-card::after {
  content: "\f2f6";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  right: -20px;
  bottom: -40px;
  font-size: 11rem;
  color: rgba(255,255,255,.05);
  transform: rotate(-15deg);
}
.cta-card h2 { color: #fff; font-size: 1.8rem; margin-bottom: 8px; }
.cta-card p { color: rgba(255,255,255,.7); margin-bottom: 0; max-width: 520px; }
.cta-card .cta-actions { display: flex; gap: 12px; flex-wrap: wrap; position: relative; z-index: 2; }
.cta-card .btn-cta-primary {
  background: var(--accent);
  color: #fff;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 700;
  border: none;
  transition: all .25s ease;
  box-shadow: 0 8px 24px rgba(233,169,60,.4);
}
.cta-card .btn-cta-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(233,169,60,.5); }
.cta-card .btn-cta-ghost {
  background: rgba(255,255,255,.12);
  color: #fff;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,.35);
  transition: all .25s ease;
  backdrop-filter: blur(4px);
}
.cta-card .btn-cta-ghost:hover { background: rgba(255,255,255,.2); }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,.72);
  padding: 68px 0 0;
}
.site-footer .footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.site-footer .footer-brand i {
  font-size: 1.3rem;
  color: var(--accent);
  background: rgba(255,255,255,.08);
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.site-footer p { color: rgba(255,255,255,.55); font-size: .92rem; line-height: 1.8; }
.site-footer h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: .5px;
}
.site-footer ul li {
  margin-bottom: 10px;
  font-size: .88rem;
}
.site-footer ul li a { color: rgba(255,255,255,.55); transition: all .2s; }
.site-footer ul li a:hover { color: var(--accent); padding-left: 4px; }
.site-footer ul li i { margin-right: 8px; color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  margin-top: 48px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: .82rem;
  color: rgba(255,255,255,.4);
}
.footer-bottom p { margin: 0; font-size: .82rem; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .nav-actions {
    margin-left: 0;
    margin-top: 12px;
    flex-wrap: wrap;
  }
  .search-box { width: 100%; }
  .page-hero h1 { font-size: 2.2rem; }
  .security-tips .tips-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  :root { --space-section: 60px; }
  .navbar-nav { margin-left: 0; margin-top: 8px; }
  .navbar-nav .nav-item { width: 100%; }
  .nav-link { padding: 12px 16px!important; border-radius: 10px!important; }
  .nav-link.active::after { display: none; }
  .page-hero { padding: 68px 0; }
  .page-hero h1 { font-size: 1.8rem; }
  .page-hero p.lead { font-size: .92rem; }
  .faq-accordion-wrap { padding: 20px; }
  .step-card { padding: 30px 22px 24px; }
  .cta-card { padding: 40px 24px; flex-direction: column; align-items: flex-start; }
  .security-tips { padding: 64px 0; }
  .security-tips .tips-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .page-hero { padding: 52px 0; }
  .page-hero h1 { font-size: 1.5rem; }
  .page-hero .hero-stats { gap: 20px; }
  .faq-filter .filter-inner { padding: 16px; }
  .faq-accordion-wrap { padding: 12px; border-radius: var(--radius-md); }
  .accordion-button { font-size: .95rem; }
  .step-card .step-num { font-size: 2.8rem; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
}