/* roulang page: index */
:root {
  --primary: #0a1628;
  --primary-light: #1a2942;
  --accent: #2d7ee7;
  --accent-light: #6ba9f5;
  --accent-bg: rgba(45,126,231,0.1);
  --secondary: #f5f7fb;
  --bg-light: #ffffff;
  --bg-soft: #f0f4fa;
  --text-dark: #132032;
  --text-body: #3d4d61;
  --text-muted: #77879c;
  --border-color: #e3eaf2;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 8px rgba(10,22,40,0.06);
  --shadow-md: 0 8px 24px rgba(10,22,40,0.08);
  --shadow-lg: 0 20px 48px rgba(10,22,40,0.12);
  --spacing-section: 96px;
  --spacing-section-sm: 64px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-body);
  background-color: var(--bg-light);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

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

/* 顶部导航 */
.site-header {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(227,234,242,0.7);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-brand {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary) !important;
  letter-spacing: -0.5px;
}

.navbar-brand .brand-dot {
  color: var(--accent);
}

.navbar-nav .nav-link {
  font-weight: 600;
  color: var(--text-body) !important;
  padding: 8px 20px !important;
  border-radius: 50px;
  margin: 0 2px;
  font-size: 0.95rem;
  transition: var(--transition);
}

.navbar-nav .nav-link:hover {
  color: var(--accent) !important;
  background: var(--accent-bg);
}

.navbar-nav .nav-link.active {
  color: var(--accent) !important;
  background: var(--accent-bg);
}

.header-cta {
  background: linear-gradient(135deg, var(--accent), #1a5fc0);
  color: #fff !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(45,126,231,0.3);
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(45,126,231,0.4);
  color: #fff !important;
}

/* 移动端底部Tab */
.mobile-bottom-tab {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(12px);
  box-shadow: 0 -4px 24px rgba(10,22,40,0.08);
  z-index: 999;
  padding: 8px 0 calc(8px + env(safe-area-inset-bottom));
  border-top: 1px solid rgba(227,234,242,0.8);
}

.mobile-tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--text-muted) !important;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 6px 8px;
  border-radius: 12px;
  transition: var(--transition);
}

.mobile-tab-item.active {
  color: var(--accent) !important;
}

.mobile-tab-item i {
  font-size: 1.25rem;
}

/* Hero 区域 */
.hero-section {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 720px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8,18,38,0.92) 0%, rgba(10,26,52,0.82) 40%, rgba(16,36,66,0.65) 100%);
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(45,126,231,0.35) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  padding: 80px 0;
}

.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);
  color: #fff;
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}

.hero-badge i {
  color: #fff;
}

.hero-section h1 {
  color: #fff;
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
  max-width: 700px;
}

.hero-section h1 .accent-text {
  color: var(--accent-light);
  position: relative;
  display: inline-block;
}

.hero-section h1 .accent-text::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 8px;
  background: rgba(45,126,231,0.3);
  border-radius: 4px;
  z-index: -1;
}

.hero-lead {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.9);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.8;
}

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

.btn-custom-primary {
  background: linear-gradient(135deg, var(--accent), #1a5fc0);
  color: #fff !important;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(45,126,231,0.4);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-custom-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(45,126,231,0.5);
  color: #fff !important;
}

.btn-custom-outline {
  background: transparent;
  color: #fff !important;
  padding: 13px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid rgba(255,255,255,0.4);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-custom-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  color: #fff !important;
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 56px;
}

.hero-stat-item {
  display: flex;
  flex-direction: column;
}

.hero-stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
}

.hero-stat-label {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
}

/* 核心板块 */
.section-padding {
  padding: var(--spacing-section) 0;
}

.section-padding-sm {
  padding: var(--spacing-section-sm) 0;
}

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

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--spacing-section-sm);
}

.section-tag {
  display: inline-block;
  background: var(--accent-bg);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* 服务卡片 */
.service-card {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  height: 100%;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 72px;
  height: 72px;
  background: var(--accent-bg);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.8rem;
  color: var(--accent);
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0;
  line-height: 1.7;
}

.service-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 16px;
  transition: var(--transition);
}

.service-card .card-link:hover {
  gap: 10px;
}

/* 分类入口 */
.category-card {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  height: 100%;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.category-card-image {
  position: relative;
  overflow: hidden;
  height: 220px;
}

.category-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.category-card:hover .category-card-image img {
  transform: scale(1.05);
}

.category-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,22,40,0.3), transparent);
}

.category-card-body {
  padding: 28px;
}

.category-card-badge {
  display: inline-block;
  background: var(--accent-bg);
  color: var(--accent);
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.category-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.category-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 16px;
}

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

.category-card .category-link:hover {
  gap: 10px;
}

/* 资讯列表 */
.news-card {
  display: flex;
  gap: 20px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 0;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  height: 100%;
  overflow: hidden;
}

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

.news-card-thumb {
  width: 160px;
  min-width: 160px;
  position: relative;
  overflow: hidden;
}

.news-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-card-body {
  padding: 24px 24px 24px 0;
  display: flex;
  flex-direction: column;
}

.news-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.news-card-cat {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
}

.news-card-time {
  color: var(--text-muted);
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 4px;
}

.news-card h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card h3 a {
  color: var(--text-dark);
}

.news-card h3 a:hover {
  color: var(--accent);
}

.news-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-empty {
  background: var(--bg-light);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 40px;
  text-align: center;
  color: var(--text-muted);
}

.news-card-empty i {
  font-size: 2rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

/* 数据区域 */
.stats-section {
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  position: relative;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8,18,38,0.94), rgba(10,26,52,0.88));
}

.stats-wrapper {
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  padding: 32px 24px;
}

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

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  color: rgba(255,255,255,0.75);
  font-size: 0.95rem;
}

/* 流程区域 */
.process-section {
  background: var(--bg-light);
}

.process-step {
  position: relative;
  text-align: center;
  padding: 32px;
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  height: 100%;
  border: 1px solid transparent;
  transition: var(--transition);
}

.process-step:hover {
  background: var(--bg-light);
  border-color: var(--border-color);
  box-shadow: var(--shadow-md);
}

.process-number {
  width: 48px;
  height: 48px;
  background: var(--accent);
  color: #fff;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 auto 20px;
}

.process-step h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.process-step p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0;
}

.process-arrow {
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 1.2rem;
  z-index: 2;
}

/* FAQ */
.faq-section {
  background: var(--bg-soft);
}

.faq-item {
  background: var(--bg-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-dark);
  font-size: 1rem;
}

.faq-question i {
  transition: var(--transition);
  color: var(--accent);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

.faq-answer p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}

/* CTA 区域 */
.cta-section {
  position: relative;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  padding: 100px 0;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8,18,38,0.9), rgba(10,26,52,0.85));
}

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

.cta-content h2 {
  color: #fff;
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-content p {
  color: rgba(255,255,255,0.8);
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* 联系区域 */
.contact-section {
  background: var(--bg-light);
}

.contact-info-card {
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  padding: 40px;
  height: 100%;
}

.contact-info-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.contact-info-card p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-bg);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-item-text {
  color: var(--text-body);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 页脚 */
.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
}

.footer-brand {
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: block;
}

.footer-brand .brand-dot {
  color: var(--accent-light);
}

.site-footer p {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
}

.footer-link-title {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

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

.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 48px;
  padding: 24px 0;
  text-align: center;
  color: rgba(255,255,255,0.4);
  font-size: 0.85rem;
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
  color: #fff;
}

/* 其它 */
.back-to-top {
  position: fixed;
  bottom: 100px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-md);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
}

/* 响应式 */
@media (max-width: 991px) {
  .hero-section {
    min-height: auto;
    padding: 80px 0;
  }

  .hero-section h1 {
    font-size: 2.5rem;
  }

  .section-header h2 {
    font-size: 2rem;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }

  .process-arrow {
    display: none;
  }

  .site-header {
    display: none;
  }

  body {
    padding-bottom: 70px;
  }

  .mobile-bottom-tab {
    display: flex;
  }

  .navbar-toggler {
    display: block;
  }
}

@media (max-width: 767px) {
  .section-padding {
    padding: 40px 0;
  }

  .hero-section h1 {
    font-size: 2rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .news-card {
    flex-direction: column;
  }

  .news-card-thumb {
    width: 100%;
    min-width: 100%;
    height: 180px;
  }

  .news-card-body {
    padding: 16px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .cta-section {
    padding: 60px 0;
  }

  .header-cta {
    display: none;
  }
}

@media (max-width: 520px) {
  .hero-buttons .btn-custom-primary,
  .hero-buttons .btn-custom-outline {
    width: 100%;
    justify-content: center;
  }

  .hero-section h1 {
    font-size: 1.75rem;
  }

  .mobile-tab-item span {
    font-size: 0.68rem;
  }
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
}

.empty-state i {
  font-size: 3rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.empty-state p {
  color: var(--text-muted);
  margin-bottom: 0;
}

/* roulang page: article */
:root {
            --ky-primary: #0b1b33;
            --ky-primary-light: #12294a;
            --ky-primary-rgb: 11, 27, 51;
            --ky-accent: #00c9a7;
            --ky-accent-dark: #00a98d;
            --ky-accent-rgb: 0, 201, 167;
            --ky-bg: #f5f7fa;
            --ky-bg-light: #eef2f7;
            --ky-text: #1e293b;
            --ky-text-light: #64748b;
            --ky-border: #e2e8f0;
            --ky-white: #ffffff;
            --ky-radius: 16px;
            --ky-radius-sm: 10px;
            --ky-shadow: 0 8px 30px rgba(11, 27, 51, .08);
            --ky-shadow-hover: 0 16px 40px rgba(11, 27, 51, .15);
            --ky-transition: .3s ease;
            --ky-font: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--ky-font);
            background-color: var(--ky-bg);
            color: var(--ky-text);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1200px;
        }

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

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

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

        .btn {
            border-radius: var(--ky-radius-sm);
            font-weight: 600;
            transition: all var(--ky-transition);
        }

        .btn:focus,
        .btn:focus-visible {
            outline: 3px solid rgba(0, 201, 167, .35);
            box-shadow: 0 0 0 4px rgba(0, 201, 167, .12);
        }

        .badge {
            border-radius: 50px;
            font-weight: 600;
            padding: .45em .9em;
        }

        /* ========== Header ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226, 232, 240, .8);
            box-shadow: 0 2px 20px rgba(11, 27, 51, .04);
            transition: box-shadow var(--ky-transition), background var(--ky-transition);
        }

        .site-header .container {
            min-height: 74px;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            font-size: 1.55rem;
            font-weight: 800;
            letter-spacing: .02em;
            color: var(--ky-primary) !important;
            gap: 4px;
        }

        .brand-dot {
            color: var(--ky-accent);
        }

        .navbar-nav .nav-link {
            padding: .55rem 1rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: .95rem;
            color: var(--ky-text);
            transition: all var(--ky-transition);
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: var(--ky-accent);
            background: rgba(0, 201, 167, .08);
            transform: translateY(-1px);
        }

        .navbar-nav .nav-link.active {
            color: var(--ky-accent);
            background: rgba(0, 201, 167, .1);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--ky-accent);
        }

        .header-cta {
            background: linear-gradient(135deg, var(--ky-primary), var(--ky-primary-light));
            color: #fff;
            border: none;
            padding: .65rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: .92rem;
            box-shadow: 0 4px 16px rgba(11, 27, 51, .15);
            transition: all var(--ky-transition);
        }

        .header-cta:hover {
            background: linear-gradient(135deg, var(--ky-accent), var(--ky-accent-dark));
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 201, 167, .35);
        }

        /* ========== Mobile Bottom Nav ========== */
        .mobile-bottom-nav {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, .97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--ky-border);
            display: flex;
            padding: 6px 0 env(safe-area-inset-bottom);
            box-shadow: 0 -4px 20px rgba(11, 27, 51, .06);
        }

        .mobile-tab {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 7px 0 5px;
            color: var(--ky-text-light);
            font-size: 11px;
            font-weight: 600;
            text-decoration: none;
            transition: color var(--ky-transition), transform var(--ky-transition);
        }

        .mobile-tab i {
            font-size: 18px;
            line-height: 1;
        }

        .mobile-tab.active,
        .mobile-tab:hover {
            color: var(--ky-accent);
            transform: translateY(-2px);
        }

        /* ========== Page Hero ========== */
        .page-hero {
            position: relative;
            padding: 140px 0 90px;
            background-size: cover;
            background-position: center;
            background-color: var(--ky-primary);
        }

        .page-hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(11, 27, 51, .94) 0%, rgba(11, 27, 51, .82) 50%, rgba(0, 201, 167, .28) 100%);
        }

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

        .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 20px;
            font-size: .88rem;
        }

        .breadcrumb-item a {
            color: rgba(255, 255, 255, .75);
            text-decoration: none;
            transition: color var(--ky-transition);
        }

        .breadcrumb-item a:hover {
            color: #fff;
        }

        .breadcrumb-item.active {
            color: var(--ky-accent);
        }

        .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, .4);
        }

        .article-cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 201, 167, .18);
            border: 1px solid rgba(0, 201, 167, .4);
            color: #7ff0d8;
            font-size: .82rem;
            font-weight: 600;
            padding: .4rem 1rem;
            border-radius: 50px;
            margin-bottom: 18px;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        .page-hero-title {
            color: #fff;
            font-size: clamp(1.7rem, 3.5vw, 2.6rem);
            font-weight: 800;
            line-height: 1.35;
            letter-spacing: -.01em;
            max-width: 760px;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, .18);
        }

        .page-hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: rgba(255, 255, 255, .75);
            font-size: .9rem;
        }

        .page-hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .page-hero-meta i {
            color: var(--ky-accent);
        }

        /* ========== Article Section ========== */
        .article-section {
            padding: 60px 0 40px;
            background: var(--ky-bg);
        }

        .article-main {
            background: var(--ky-white);
            border-radius: var(--ky-radius);
            border: 1px solid var(--ky-border);
            box-shadow: var(--ky-shadow);
            padding: 36px 36px 20px;
        }

        .article-content {
            font-size: 1.04rem;
            line-height: 1.9;
            color: var(--ky-text);
        }

        .article-content p {
            margin-bottom: 1.5rem;
        }

        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--ky-primary);
            font-weight: 700;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }

        .article-content h2 {
            font-size: 1.5rem;
            padding-left: 14px;
            border-left: 4px solid var(--ky-accent);
        }

        .article-content h3 {
            font-size: 1.25rem;
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 1.5rem;
            padding-left: 1.5rem;
        }

        .article-content li {
            margin-bottom: .4rem;
        }

        .article-content img {
            border-radius: 12px;
            margin: 1.2rem 0;
        }

        .article-content blockquote {
            background: var(--ky-bg-light);
            border-left: 4px solid var(--ky-accent);
            border-radius: 0 12px 12px 0;
            padding: 1rem 1.4rem;
            margin: 1.5rem 0;
            color: var(--ky-text-light);
            font-style: italic;
        }

        .article-tags {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--ky-border);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .article-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--ky-bg);
            border: 1px solid var(--ky-border);
            color: var(--ky-text);
            font-size: .85rem;
            font-weight: 500;
            padding: .35rem .9rem;
            border-radius: 50px;
            transition: all var(--ky-transition);
        }

        .article-tag:hover {
            background: rgba(0, 201, 167, .08);
            border-color: var(--ky-accent);
            color: var(--ky-accent);
        }

        /* ========== Sidebar ========== */
        .article-sidebar {
            position: sticky;
            top: 100px;
        }

        .sidebar-card {
            background: var(--ky-white);
            border: 1px solid var(--ky-border);
            border-radius: var(--ky-radius);
            box-shadow: var(--ky-shadow);
            padding: 28px;
            margin-bottom: 24px;
            transition: box-shadow var(--ky-transition);
        }

        .sidebar-card:hover {
            box-shadow: var(--ky-shadow-hover);
        }

        .sidebar-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--ky-primary);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-card-title i {
            color: var(--ky-accent);
            font-size: 1.2rem;
        }

        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sidebar-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--ky-bg-light);
            font-size: .92rem;
        }

        .sidebar-list li:last-child {
            border-bottom: none;
        }

        .sidebar-list i {
            color: var(--ky-accent);
            font-size: .7rem;
            flex-shrink: 0;
        }

        .sidebar-list a {
            color: var(--ky-text);
            transition: color var(--ky-transition);
        }

        .sidebar-list a:hover {
            color: var(--ky-accent);
        }

        .sidebar-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--ky-bg-light);
        }

        .sidebar-contact-item:last-child {
            border-bottom: none;
        }

        .sidebar-contact-item i {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 201, 167, .1);
            color: var(--ky-accent);
            border-radius: 10px;
            font-size: 1rem;
        }

        .sidebar-contact-item .content {
            font-size: .9rem;
            line-height: 1.6;
        }

        .sidebar-contact-item .content strong {
            display: block;
            color: var(--ky-primary);
            font-size: .82rem;
            font-weight: 600;
        }

        /* ========== Related Section ========== */
        .related-section {
            padding: 50px 0 60px;
            background: var(--ky-white);
            border-top: 1px solid var(--ky-border);
        }

        .section-title {
            font-size: 1.65rem;
            font-weight: 800;
            color: var(--ky-primary);
            margin-bottom: 6px;
            letter-spacing: -.01em;
        }

        .section-subtitle {
            font-size: .95rem;
            color: var(--ky-text-light);
            margin-bottom: 30px;
        }

        .related-card {
            display: block;
            background: var(--ky-white);
            border: 1px solid var(--ky-border);
            border-radius: var(--ky-radius);
            overflow: hidden;
            box-shadow: var(--ky-shadow);
            transition: all var(--ky-transition);
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--ky-shadow-hover);
            border-color: rgba(0, 201, 167, .35);
        }

        .related-card-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

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

        .related-card:hover .related-card-cover img {
            transform: scale(1.06);
        }

        .related-card-body {
            padding: 20px 22px 22px;
        }

        .related-card-body .badge {
            background: rgba(0, 201, 167, .12);
            color: var(--ky-accent);
            font-size: .76rem;
            margin-bottom: 10px;
        }

        .related-card-body h3 {
            font-size: 1.04rem;
            font-weight: 700;
            color: var(--ky-primary);
            line-height: 1.45;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 46px;
        }

        .related-card-body p {
            font-size: .88rem;
            color: var(--ky-text-light);
            line-height: 1.65;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: .82rem;
            color: var(--ky-text-light);
        }

        .related-card-meta i {
            color: var(--ky-accent);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--ky-primary) 0%, var(--ky-primary-light) 60%, #174a6b 100%);
            background-size: cover;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(0, 201, 167, .25), transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .cta-title {
            color: #fff;
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-text {
            color: rgba(255, 255, 255, .8);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 30px;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--ky-accent);
            color: var(--ky-primary) !important;
            font-weight: 700;
            font-size: 1rem;
            padding: .85rem 2.2rem;
            border-radius: 50px;
            box-shadow: 0 8px 30px rgba(0, 201, 167, .35);
            transition: all var(--ky-transition);
        }

        .cta-btn:hover {
            background: #fff;
            color: var(--ky-primary);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255, 255, 255, .15);
        }

        /* ========== Not Found ========== */
        .not-found-section {
            padding: 150px 0 80px;
            background: var(--ky-bg);
            min-height: 60vh;
            display: flex;
            align-items: center;
        }

        .not-found-icon {
            width: 84px;
            height: 84px;
            margin: 0 auto 24px;
            background: rgba(0, 201, 167, .1);
            border-radius: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--ky-accent);
        }

        .not-found-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--ky-primary);
            margin-bottom: 10px;
        }

        .not-found-desc {
            font-size: 1rem;
            color: var(--ky-text-light);
            margin-bottom: 28px;
        }

        .not-found-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--ky-primary);
            color: #fff;
            padding: .8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all var(--ky-transition);
        }

        .not-found-btn:hover {
            background: var(--ky-accent);
            color: var(--ky-primary);
            transform: translateY(-2px);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0a1424;
            color: rgba(255, 255, 255, .75);
            padding: 70px 0 24px;
            font-size: .92rem;
        }

        .site-footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            display: inline-block;
            margin-bottom: 16px;
        }

        .site-footer p {
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .footer-link-title {
            color: #fff;
            font-size: 1.02rem;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-link-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 26px;
            height: 3px;
            border-radius: 3px;
            background: var(--ky-accent);
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, .65);
            transition: all var(--ky-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a:hover {
            color: var(--ky-accent);
            padding-left: 4px;
        }

        .footer-bottom {
            margin-top: 40px;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, .08);
            text-align: center;
            font-size: .85rem;
            color: rgba(255, 255, 255, .45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, .6);
        }

        .footer-bottom a:hover {
            color: var(--ky-accent);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .article-main {
                padding: 28px 24px 16px;
            }

            .page-hero {
                padding: 130px 0 70px;
            }
        }

        @media (max-width: 991.98px) {
            body {
                padding-bottom: 64px;
            }

            .site-header {
                position: relative;
                backdrop-filter: none;
                -webkit-backdrop-filter: none;
            }

            .page-hero {
                padding: 50px 0 60px;
            }

            .mobile-bottom-nav {
                display: flex;
            }

            .article-sidebar {
                position: static;
                margin-top: 30px;
            }

            .related-card-cover {
                height: 200px;
            }
        }

        @media (max-width: 768px) {
            .page-hero-title {
                font-size: 1.5rem;
            }

            .page-hero-meta {
                gap: 12px;
                font-size: .82rem;
            }

            .article-main {
                padding: 22px 18px 14px;
                border-radius: 12px;
            }

            .article-content {
                font-size: .98rem;
                line-height: 1.8;
            }

            .section-title {
                font-size: 1.35rem;
            }

            .cta-title {
                font-size: 1.5rem;
            }

            .cta-btn {
                padding: .8rem 1.6rem;
                font-size: .92rem;
            }

            .related-card-cover {
                height: 170px;
            }
        }

        @media (max-width: 520px) {
            .navbar-brand {
                font-size: 1.3rem;
            }

            .page-hero {
                padding: 40px 0 50px;
            }

            .page-hero-title {
                font-size: 1.3rem;
            }

            .article-tags {
                gap: 8px;
            }

            .article-tag {
                font-size: .78rem;
                padding: .28rem .7rem;
            }

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

            .footer-links li {
                font-size: .88rem;
            }

            .page-hero-meta {
                flex-direction: column;
                gap: 8px;
            }
        }

/* roulang page: category1 */
:root {
  --primary: #0a3d62;
  --primary-dark: #082e49;
  --primary-light: #145c87;
  --accent: #00b4d8;
  --accent-dark: #0096b7;
  --accent-orange: #ff8c42;
  --bg-light: #f4f7fb;
  --bg-white: #ffffff;
  --text-main: #16283b;
  --text-muted: #5f7182;
  --border: #e1e8f0;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 12px 36px rgba(10, 61, 98, 0.08);
  --shadow-hover: 0 20px 52px rgba(10, 61, 98, 0.15);
  --transition: all 0.35s ease;
  --header-height: 76px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  background: var(--bg-white);
  line-height: 1.75;
  padding-bottom: 68px;
  -webkit-font-smoothing: antialiased;
}

@media (min-width: 992px) {
  body {
    padding-bottom: 0;
  }
}

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

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

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

.container {
  max-width: 1200px;
}

/* ====== Header ====== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(225, 232, 240, 0.8);
  box-shadow: 0 2px 20px rgba(10, 61, 98, 0.04);
}

.site-header .container {
  height: 100%;
}

.navbar-brand {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  line-height: 1;
  transition: var(--transition);
}

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

.brand-dot {
  color: var(--accent);
}

.navbar-nav .nav-link {
  font-size: 0.96rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.55rem 1.1rem;
  border-radius: 50px;
  position: relative;
  transition: var(--transition);
}

.navbar-nav .nav-link:hover {
  color: var(--primary);
  background: rgba(10, 61, 98, 0.06);
}

.navbar-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
  background: rgba(0, 180, 216, 0.12);
}

.header-cta {
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.55rem 1.4rem;
  border-radius: 50px;
  background: var(--primary);
  color: #fff;
  border: none;
  white-space: nowrap;
  transition: var(--transition);
}

.header-cta:hover {
  background: var(--primary-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(10, 61, 98, 0.25);
}

@media (max-width: 991px) {
  .site-header {
    height: 62px;
  }
  .navbar-brand {
    font-size: 1.3rem;
  }
}

/* ====== Mobile Bottom Tab ====== */
.mobile-bottom-tab {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  display: flex;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border);
  padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
  box-shadow: 0 -4px 24px rgba(10, 61, 98, 0.06);
}

.tab-link {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 5px 0;
  border-radius: 12px;
  transition: var(--transition);
}

.tab-link i {
  font-size: 1.22rem;
  line-height: 1;
}

.tab-link:hover,
.tab-link.active {
  color: var(--primary);
}

.tab-link.active {
  font-weight: 700;
}

@media (min-width: 992px) {
  .mobile-bottom-tab {
    display: none;
  }
}

/* ====== Page Hero ====== */
.page-hero {
  position: relative;
  padding: 110px 0 100px;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  background-color: var(--primary-dark);
  color: #fff;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(8, 46, 73, 0.96) 0%, rgba(10, 61, 98, 0.88) 50%, rgba(0, 180, 216, 0.45) 100%);
  z-index: 1;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 90px;
  background: var(--bg-white);
  border-radius: 50% 0 0 0;
  z-index: 2;
}

.page-hero .container {
  position: relative;
  z-index: 3;
}

.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.87rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 18px;
}

.hero-breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  transition: var(--transition);
}

.hero-breadcrumb a:hover {
  color: #fff;
}

.hero-breadcrumb i {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
}

.hero-badge {
  display: inline-block;
  padding: 5px 18px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: #fff;
  margin-bottom: 18px;
}

.hero-title {
  font-size: clamp(2.2rem, 4.4vw, 3.4rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.hero-title .accent-text {
  color: var(--accent);
}

.hero-desc {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.88);
  max-width: 540px;
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-actions .btn {
  margin-right: 12px;
  padding: 12px 30px;
  font-size: 0.95rem;
}

.hero-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
  transform: perspective(1200px) rotateY(-6deg);
  transition: var(--transition);
}

.hero-media:hover {
  transform: perspective(1200px) rotateY(0deg);
}

.hero-media img {
  width: 100%;
  display: block;
}

@media (max-width: 991px) {
  .page-hero {
    padding: 80px 0 70px;
    text-align: center;
  }
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions .btn {
    margin: 6px;
  }
  .hero-media {
    margin-top: 32px;
    transform: none;
  }
}

@media (max-width: 575px) {
  .page-hero {
    padding: 64px 0 56px;
  }
  .hero-desc {
    font-size: 1rem;
  }
}

/* ====== Section Common ====== */
.section {
  padding: 92px 0;
}

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

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

.section-head {
  margin-bottom: 52px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-tag::before {
  content: '';
  width: 26px;
  height: 3px;
  background: var(--accent);
  border-radius: 10px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--primary-dark);
  margin-bottom: 14px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 680px;
}

.text-center .section-sub {
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .section-head {
    margin-bottom: 36px;
  }
}

/* ====== Stats ====== */
.stats-section {
  padding: 0 0 80px;
  background: var(--bg-white);
  margin-top: -40px;
  position: relative;
  z-index: 4;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 22px 28px;
  text-align: center;
  box-shadow: 0 8px 30px rgba(10, 61, 98, 0.06);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
  opacity: 0;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-num {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.stat-num em {
  font-style: normal;
  font-size: 1.1rem;
  color: var(--accent);
}

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

@media (max-width: 991px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 520px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-num {
    font-size: 2rem;
  }
}

/* ====== Product Series ====== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.product-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
}

.product-card:hover {
  transform: translateY(-8px);
  border-color: transparent;
  box-shadow: var(--shadow-hover);
}

.product-card .card-img {
  height: 200px;
  overflow: hidden;
  position: relative;
}

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

.product-card:hover .card-img img {
  transform: scale(1.08);
}

.product-card .card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10, 61, 98, 0) 55%, rgba(10, 61, 98, 0.12) 100%);
  opacity: 0;
  transition: var(--transition);
}

.product-card:hover .card-img::after {
  opacity: 1;
}

.product-card .card-body {
  padding: 24px 22px 22px;
}

.product-card .card-tag {
  display: inline-block;
  background: rgba(0, 180, 216, 0.1);
  color: var(--accent-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 30px;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.product-card h3 {
  font-size: 1.16rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
}

.product-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

@media (max-width: 991px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 575px) {
  .product-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

/* ====== Featured Product ====== */
.featured-product {
  display: flex;
  align-items: center;
  gap: 52px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 44px;
  margin-bottom: 28px;
  box-shadow: 0 6px 24px rgba(10, 61, 98, 0.04);
  transition: var(--transition);
  overflow: hidden;
}

.featured-product:last-child {
  margin-bottom: 0;
}

.featured-product:hover {
  box-shadow: var(--shadow-hover);
}

.featured-product:nth-child(even) {
  flex-direction: row-reverse;
}

.fp-media {
  flex: 0 0 calc(50% - 26px);
  border-radius: 16px;
  overflow: hidden;
  position: relative;
}

.fp-media img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.featured-product:hover .fp-media img {
  transform: scale(1.04);
}

.fp-content {
  flex: 1;
}

.fp-content .fp-badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 30px;
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}

.fp-content h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 14px;
}

.fp-content p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 20px;
  line-height: 1.8;
}

.fp-list {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
}

.fp-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  font-size: 0.95rem;
  color: var(--text-main);
}

.fp-list li i {
  color: var(--accent);
  font-size: 0.9rem;
}

.btn-detail {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
}

.btn-detail:hover {
  color: var(--accent-dark);
  gap: 12px;
}

@media (max-width: 991px) {
  .featured-product {
    flex-direction: column !important;
    padding: 26px;
    gap: 24px;
  }
  .fp-media {
    flex: 1;
    width: 100%;
  }
  .fp-media img {
    height: 220px;
  }
}

/* ====== Tech Section ====== */
.tech-section {
  background: var(--primary-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.tech-section::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 180, 216, 0.2) 0%, transparent 60%);
  top: -160px;
  right: -120px;
  border-radius: 50%;
}

.tech-section::after {
  content: '';
  position: absolute;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(255, 140, 66, 0.12) 0%, transparent 55%);
  bottom: -100px;
  left: 10%;
  border-radius: 50%;
}

.tech-section .container {
  position: relative;
  z-index: 2;
}

.tech-section .section-tag {
  color: var(--accent);
}

.tech-section .section-tag::before {
  background: var(--accent);
}

.tech-section .section-title {
  color: #fff;
}

.tech-section .section-sub {
  color: rgba(255, 255, 255, 0.75);
}

.tech-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.tech-item {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}

.tech-item:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(0, 180, 216, 0.45);
  transform: translateY(-5px);
}

.tech-item .tech-icon {
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 180, 216, 0.18);
  border-radius: 14px;
  margin-bottom: 18px;
  font-size: 1.4rem;
  color: var(--accent);
}

.tech-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.tech-item p {
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.76);
  margin: 0;
}

@media (max-width: 768px) {
  .tech-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
}

@media (max-width: 520px) {
  .tech-list {
    grid-template-columns: 1fr;
  }
}

/* ====== Scenario ====== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.scenario-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
}

.scenario-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.scenario-card .scenario-img {
  height: 210px;
  overflow: hidden;
  position: relative;
}

.scenario-card .scenario-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.scenario-card:hover .scenario-img img {
  transform: scale(1.07);
}

.scenario-card .scenario-body {
  padding: 26px 24px;
}

.scenario-card .scenario-body h3 {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
}

.scenario-card .scenario-body p {
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.75;
  margin: 0;
}

@media (max-width: 991px) {
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 575px) {
  .scenario-grid {
    grid-template-columns: 1fr;
  }
}

/* ====== FAQ ====== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 16px;
  background: #fff;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(0, 180, 216, 0.4);
}

.faq-item.open {
  border-color: rgba(0, 180, 216, 0.5);
  box-shadow: 0 10px 30px rgba(10, 61, 98, 0.08);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--primary-dark);
  cursor: pointer;
  transition: var(--transition);
  margin: 0;
}

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

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 180, 216, 0.12);
  color: var(--accent-dark);
  border-radius: 50%;
  font-size: 0.8rem;
  transition: var(--transition);
}

.faq-item.open .faq-icon {
  background: var(--accent);
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.8;
  display: none;
}

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

/* ====== CTA ====== */
.cta-section {
  padding: 90px 0;
}

.cta-box {
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  background-color: var(--primary);
  border-radius: 28px;
  padding: 64px 56px;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(10, 61, 98, 0.25);
}

.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(8, 46, 73, 0.95) 0%, rgba(10, 61, 98, 0.88) 55%, rgba(0, 180, 216, 0.55) 100%);
  z-index: 1;
}

.cta-box .cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-box h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-box p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1rem;
  margin-bottom: 34px;
}

.cta-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-input {
  flex: 1 1 280px;
  max-width: 380px;
  padding: 14px 22px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  outline: none;
  transition: var(--transition);
  backdrop-filter: blur(6px);
}

.cta-input::placeholder {
  color: rgba(255, 255, 255, 0.65);
}

.cta-input:focus {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.12);
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: 50px;
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  border: none;
  font-size: 0.95rem;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.btn-accent:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.22);
}

@media (max-width: 768px) {
  .cta-section {
    padding: 56px 0;
  }
  .cta-box {
    padding: 44px 24px;
    border-radius: 20px;
  }
}

/* ====== Footer ====== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.78);
  padding: 70px 0 26px;
  font-size: 0.95rem;
}

.site-footer .footer-brand {
  font-size: 1.55rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
  display: inline-block;
  margin-bottom: 16px;
}

.site-footer .footer-brand .brand-dot {
  color: var(--accent);
}

.site-footer p {
  line-height: 1.8;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-link-title {
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-link-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 3px;
  background: var(--accent);
  border-radius: 10px;
}

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

.footer-links li {
  padding: 6px 0;
  font-size: 0.94rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-links i {
  color: var(--accent);
  width: 18px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 44px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.65);
}

.footer-bottom a:hover {
  color: #fff;
}

@media (max-width: 768px) {
  .site-footer {
    padding: 50px 0 24px;
  }
  .footer-bottom {
    margin-bottom: 18px;
  }
}

/* ====== Buttons ====== */
.btn {
  border-radius: 50px;
  padding: 10px 24px;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  border: none;
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0, 180, 216, 0.3);
}

.btn-outline-light {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.8);
  color: #fff;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #fff;
  color: #fff;
}

.btn:focus,
.cta-input:focus,
.nav-link:focus {
  outline: 3px solid rgba(0, 180, 216, 0.4);
  outline-offset: 2px;
}

/* ====== Focus Accessibility ====== */
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(0, 180, 216, 0.5);
  outline-offset: 2px;
}

/* ====== Footer bottom spacing for mobile ====== */
@media (max-width: 991.98px) {
  .site-footer {
    padding-bottom: 80px;
  }
}

/* roulang page: category2 */
:root {
            --ky-primary: #1e3a8a;
            --ky-primary-light: #2563eb;
            --ky-accent: #06b6d4;
            --ky-accent-light: #22d3ee;
            --ky-dark: #0f172a;
            --ky-dark-2: #111c34;
            --ky-bg: #f8fafc;
            --ky-white: #ffffff;
            --ky-text: #334155;
            --ky-muted: #64748b;
            --ky-border: #e2e8f0;
            --ky-radius: 16px;
            --ky-radius-sm: 10px;
            --ky-radius-lg: 24px;
            --ky-shadow: 0 4px 24px rgba(15, 23, 42, .08);
            --ky-shadow-lg: 0 16px 48px rgba(15, 23, 42, .12);
            --ky-shadow-accent: 0 8px 30px rgba(6, 182, 212, .25);
            --ky-transition: .3s 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: 1.75;
            color: var(--ky-text);
            background: var(--ky-bg);
            -webkit-font-smoothing: antialiased;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--ky-dark);
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 .5rem;
        }

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

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

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ---------- Header ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(15, 23, 42, .92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            padding: 14px 0;
            transition: box-shadow var(--ky-transition);
        }

        .site-header.scrolled {
            box-shadow: 0 10px 40px rgba(0, 0, 0, .3);
        }

        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: .02em;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .navbar-brand:hover {
            color: #fff;
        }

        .brand-dot {
            color: var(--ky-accent-light);
            position: relative;
        }

        .navbar-brand .brand-dot::after {
            content: "";
            position: absolute;
            right: -6px;
            bottom: 6px;
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--ky-accent-light);
            box-shadow: 0 0 8px var(--ky-accent);
        }

        .navbar-nav {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, .72);
            font-size: .95rem;
            font-weight: 500;
            padding: .45rem 1rem;
            border-radius: 8px;
            transition: all var(--ky-transition);
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }

        .navbar-nav .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(37, 99, 235, .25), rgba(6, 182, 212, .2));
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: -2px;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            border-radius: 3px;
            background: var(--ky-accent-light);
            box-shadow: 0 0 12px rgba(6, 182, 212, .6);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: .55rem 1.4rem;
            border-radius: 50px;
            font-size: .9rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--ky-primary-light), var(--ky-accent));
            box-shadow: var(--ky-shadow-accent);
            border: none;
            transition: transform var(--ky-transition), box-shadow var(--ky-transition);
        }

        .header-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 36px rgba(6, 182, 212, .35);
            color: #fff;
        }

        /* ---------- Mobile Tab Nav ---------- */
        .mobile-tab-nav {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1060;
            display: none;
            background: rgba(15, 23, 42, .98);
            backdrop-filter: blur(14px);
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
            grid-template-columns: repeat(3, 1fr);
        }

        .mobile-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            padding: 8px 4px;
            border-radius: 12px;
            color: rgba(255, 255, 255, .55);
            font-size: .72rem;
            font-weight: 500;
            transition: all var(--ky-transition);
        }

        .mobile-tab-item i {
            font-size: 1.2rem;
        }

        .mobile-tab-item:hover,
        .mobile-tab-item.active {
            color: var(--ky-accent-light);
            background: rgba(6, 182, 212, .1);
        }

        .mobile-tab-item.active {
            box-shadow: inset 0 -2px 0 var(--ky-accent-light);
        }

        /* ---------- Hero Banner ---------- */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 23, 42, .92), rgba(30, 58, 138, .82)), url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
            padding: 100px 0 90px;
            text-align: center;
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(6, 182, 212, .2), transparent 65%);
            top: -180px;
            right: -120px;
            pointer-events: none;
        }

        .page-banner .banner-inner {
            position: relative;
            z-index: 2;
            max-width: 860px;
            margin: 0 auto;
        }

        .banner-overline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: 50px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .16);
            color: rgba(255, 255, 255, .86);
            font-size: .85rem;
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: .04em;
        }

        .page-banner h1 {
            color: #fff;
            font-size: clamp(2rem, 4vw, 3.2rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
        }

        .page-banner h1 .highlight {
            color: var(--ky-accent-light);
            position: relative;
            display: inline-block;
        }

        .page-banner p {
            color: rgba(255, 255, 255, .8);
            font-size: 1.05rem;
            line-height: 1.8;
            max-width: 680px;
            margin: 0 auto 32px;
        }

        .banner-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-ky-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: .7rem 1.8rem;
            background: linear-gradient(135deg, var(--ky-primary-light), var(--ky-accent));
            color: #fff;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: .95rem;
            box-shadow: var(--ky-shadow-accent);
            transition: all var(--ky-transition);
        }

        .btn-ky-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(6, 182, 212, .35);
            color: #fff;
        }

        .btn-ky-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: .7rem 1.8rem;
            background: rgba(255, 255, 255, .1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .25);
            border-radius: 50px;
            font-weight: 600;
            font-size: .95rem;
            backdrop-filter: blur(8px);
            transition: all var(--ky-transition);
        }

        .btn-ky-ghost:hover {
            background: rgba(255, 255, 255, .2);
            border-color: rgba(255, 255, 255, .4);
            color: #fff;
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 18px 0;
            background: transparent;
            border-bottom: 1px solid var(--ky-border);
        }

        .breadcrumb {
            margin: 0;
            font-size: .88rem;
        }

        .breadcrumb a {
            color: var(--ky-muted);
        }

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

        .breadcrumb-item + .breadcrumb-item::before {
            color: var(--ky-muted);
        }

        .breadcrumb-item.active {
            color: var(--ky-primary);
        }

        /* ---------- Section Layout ---------- */
        .section-block {
            padding: 90px 0;
        }

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

        .section-title-wrap {
            max-width: 730px;
            margin: 0 auto 56px;
            text-align: center;
        }

        .section-title-wrap .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .82rem;
            font-weight: 600;
            color: var(--ky-accent);
            background: rgba(6, 182, 212, .1);
            border: 1px solid rgba(6, 182, 212, .2);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: .06em;
        }

        .section-title-wrap h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .section-title-wrap h2 span {
            color: var(--ky-primary-light);
        }

        .section-title-wrap p {
            color: var(--ky-muted);
            font-size: 1.02rem;
            line-height: 1.8;
            margin: 0;
        }

        /* ---------- Service Cards ---------- */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--ky-white);
            border: 1px solid var(--ky-border);
            border-radius: var(--ky-radius);
            padding: 32px 28px;
            position: relative;
            transition: all var(--ky-transition);
            overflow: hidden;
        }

        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--ky-primary-light), var(--ky-accent));
            opacity: 0;
            transition: opacity var(--ky-transition);
        }

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

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 58px;
            height: 58px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            background: linear-gradient(135deg, rgba(37, 99, 235, .12), rgba(6, 182, 212, .12));
            color: var(--ky-primary-light);
            margin-bottom: 20px;
        }

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

        .service-card p {
            color: var(--ky-muted);
            font-size: .92rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .service-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .88rem;
            font-weight: 600;
            color: var(--ky-primary-light);
        }

        .service-link:hover {
            color: var(--ky-accent);
        }

        /* ---------- Solution Cards ---------- */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            border-radius: var(--ky-radius);
            overflow: hidden;
            position: relative;
            height: 280px;
            cursor: pointer;
            border: 1px solid var(--ky-border);
            box-shadow: 0 4px 16px rgba(15, 23, 42, .04);
            transition: all var(--ky-transition);
        }

        .solution-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--ky-shadow-lg);
        }

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

        .solution-card:hover img {
            transform: scale(1.08);
        }

        .solution-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0) 30%, rgba(15, 23, 42, .85) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 28px 22px;
            color: #fff;
            transition: background var(--ky-transition);
        }

        .solution-mask h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 6px;
        }

        .solution-mask span {
            color: rgba(255, 255, 255, .75);
            font-size: .85rem;
            line-height: 1.6;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height .4s ease, opacity .4s ease;
        }

        .solution-card:hover .solution-mask span,
        .solution-card:focus .solution-mask span {
            max-height: 60px;
            opacity: 1;
        }

        /* ---------- Tech Dark Section ---------- */
        .tech-section {
            background: linear-gradient(135deg, #0b1628, #122a4a);
            color: #fff;
            padding: 90px 0;
            position: relative;
            overflow: hidden;
        }

        .tech-section::after {
            content: "";
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(6, 182, 212, .2), transparent 60%);
            right: -120px;
            bottom: -160px;
            pointer-events: none;
        }

        .tech-section .section-title-wrap h2 {
            color: #fff;
        }

        .tech-section .section-title-wrap p {
            color: rgba(255, 255, 255, .7);
        }

        .tech-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            z-index: 2;
        }

        .tech-card {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--ky-radius);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--ky-transition);
            backdrop-filter: blur(8px);
        }

        .tech-card:hover {
            background: rgba(255, 255, 255, .12);
            border-color: rgba(6, 182, 212, .5);
            transform: translateY(-4px);
        }

        .tech-card i {
            font-size: 2rem;
            color: var(--ky-accent-light);
            margin-bottom: 16px;
            display: inline-block;
        }

        .tech-card h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .tech-card p {
            color: rgba(255, 255, 255, .65);
            font-size: .82rem;
            line-height: 1.65;
            margin: 0;
        }

        /* ---------- Stats ---------- */
        .stats-section {
            padding: 80px 0;
            background: var(--ky-white);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-item {
            padding: 28px 16px;
            border-radius: var(--ky-radius);
            border: 1px solid var(--ky-border);
            background: var(--ky-bg);
            transition: all var(--ky-transition);
        }

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

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--ky-primary-light);
            line-height: 1.2;
            display: block;
            margin-bottom: 6px;
        }

        .stat-label {
            color: var(--ky-muted);
            font-size: .9rem;
            font-weight: 500;
        }

        /* ---------- Process ---------- */
        .process-section {
            padding: 90px 0;
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            counter-reset: process-counter;
            margin-top: 20px;
        }

        .process-step {
            position: relative;
            text-align: center;
            padding: 32px 16px 24px;
            background: var(--ky-white);
            border: 1px solid var(--ky-border);
            border-radius: var(--ky-radius);
            transition: all var(--ky-transition);
        }

        .process-step:hover {
            transform: translateY(-5px);
            box-shadow: var(--ky-shadow-lg);
        }

        .process-step .step-num {
            width: 56px;
            height: 56px;
            line-height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--ky-primary-light), var(--ky-accent));
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 auto 18px;
            box-shadow: var(--ky-shadow-accent);
            position: relative;
            z-index: 2;
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-step p {
            color: var(--ky-muted);
            font-size: .84rem;
            line-height: 1.65;
            margin: 0;
        }

        .process-step::after {
            content: "\f054";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: .85rem;
            color: var(--ky-accent);
            position: absolute;
            top: 50%;
            right: -16px;
            transform: translateY(-50%);
        }

        .process-step:last-child::after {
            display: none;
        }

        /* ---------- FAQ ---------- */
        .faq-section {
            padding: 90px 0;
            background: var(--ky-white);
            border-top: 1px solid var(--ky-border);
        }

        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            border: 1px solid var(--ky-border);
            border-radius: var(--ky-radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--ky-bg);
            transition: border-color var(--ky-transition);
        }

        .accordion-item:focus-within,
        .accordion-item:hover {
            border-color: var(--ky-accent);
        }

        .accordion-button {
            background: transparent;
            color: var(--ky-dark);
            font-weight: 600;
            font-size: 1rem;
            padding: 18px 22px;
            box-shadow: none;
            outline: none;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(6, 182, 212, .06);
            color: var(--ky-primary-light);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(6, 182, 212, .12);
        }

        .accordion-button::after {
            background-size: 14px;
            filter: hue-rotate(180deg);
        }

        .accordion-body {
            color: var(--ky-muted);
            padding: 0 22px 20px;
            font-size: .94rem;
            line-height: 1.8;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .92), rgba(30, 58, 138, .85)), url('/assets/images/backpic/back-2.png') no-repeat center center / cover;
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(6, 182, 212, .25), transparent 65%);
            left: -120px;
            top: -120px;
            pointer-events: none;
        }

        .cta-inner {
            max-width: 720px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, .8);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: #0b1628;
            color: rgba(255, 255, 255, .65);
            padding: 70px 0 30px;
        }

        .site-footer .footer-brand {
            display: inline-block;
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer p {
            font-size: .9rem;
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-link-title {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            padding-bottom: 10px;
            position: relative;
        }

        .footer-link-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 2px;
            background: var(--ky-accent);
            border-radius: 2px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
            font-size: .9rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, .65);
            transition: color var(--ky-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a:hover {
            color: var(--ky-accent-light);
        }

        .footer-links i {
            color: var(--ky-accent);
            font-size: .8rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            margin-top: 40px;
            padding-top: 24px;
            text-align: center;
            font-size: .85rem;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, .5);
        }

        .footer-bottom a:hover {
            color: var(--ky-accent-light);
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }

            .process-step:nth-child(2)::after {
                display: none;
            }

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

        @media (max-width: 768px) {
            .section-block {
                padding: 60px 0;
            }

            .page-banner {
                padding: 70px 0 60px;
            }

            .mobile-tab-nav {
                display: grid;
            }

            body {
                padding-bottom: 70px;
            }

            .d-none.d-lg-flex.align-items-center {
                display: none !important;
            }

            .site-header .container {
                justify-content: space-between;
            }
        }

        @media (max-width: 560px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

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

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

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

            .process-steps {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .process-step::after {
                display: none;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-number {
                font-size: 1.8rem;
            }

            .banner-actions {
                flex-direction: column;
                align-items: center;
            }

            .btn-ky-primary,
            .btn-ky-ghost {
                width: 100%;
                justify-content: center;
            }

            .section-title-wrap {
                margin-bottom: 40px;
            }

            .footer-bottom {
                font-size: .78rem;
            }
        }

        /* Focus accessibility */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(6, 182, 212, .5);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* Reduced motion */
        @media (prefers-reduced-motion: reduce) {
            * {
                transition-duration: .01ms !important;
                animation-duration: .01ms !important;
            }
        }