/* roulang page: index */
:root {
  --primary: #16213e;
  --primary-light: #1f2f5a;
  --primary-dark: #0d1424;
  --accent: #f0a500;
  --accent-dark: #d18f00;
  --accent-light: #fbbf24;
  --bg-light: #f4f6fb;
  --bg-white: #ffffff;
  --bg-dark: #0d1424;
  --text-main: #1a2233;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.14);
  --transition: 0.3s ease;
}

* {
  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", sans-serif;
  color: var(--text-main);
  background: var(--bg-light);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.container-custom {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 导航 */
.site-header {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 20px;
}

.nav-dock {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(13, 20, 36, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 60px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.nav-dock.scrolled {
  background: rgba(13, 20, 36, 0.92);
  box-shadow: 0 12px 42px rgba(0, 0, 0, 0.3);
}

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

.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #0d1424;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.5px;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(240, 165, 0, 0.35);
}

.logo-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  display: inline-block;
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.82);
  border-radius: 40px;
  transition: color 0.3s ease, background 0.3s ease;
}

.nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.nav-links a.active {
  color: #0d1424;
  background: var(--accent);
  font-weight: 600;
}

.nav-cta {
  flex-shrink: 0;
}

/* 按钮 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 60%, var(--accent-dark) 100%);
  color: #0d1424;
  font-size: 15px;
  font-weight: 700;
  border-radius: 50px;
  border: none;
  box-shadow: 0 6px 20px rgba(240, 165, 0, 0.35);
  transition: all 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(240, 165, 0, 0.45);
}

.btn-primary:active {
  transform: translateY(-1px) scale(0.98);
}

.btn-primary:focus-visible,
.btn-outline:focus-visible {
  outline: 3px solid rgba(240, 165, 0, 0.4);
  outline-offset: 2px;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 50px;
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  transition: all 0.3s ease;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-outline.accent {
  color: var(--accent);
  border-color: rgba(240, 165, 0, 0.6);
}

.btn-outline.accent:hover {
  background: rgba(240, 165, 0, 0.08);
  border-color: var(--accent);
}

/* Hero */
.hero-section {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(9, 14, 28, 0.92) 0%, rgba(13, 20, 36, 0.78) 45%, rgba(13, 20, 36, 0.55) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 150px 0 90px;
  max-width: 800px;
}

.hero-title {
  font-size: clamp(38px, 5.5vw, 62px);
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

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

.hero-subtitle {
  font-size: clamp(16px, 2vw, 19px);
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.8;
  max-width: 620px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
}

.hero-meta-item i {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: var(--accent);
  font-size: 16px;
}

/* 统计条 */
.stats-bar {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 40px 0;
}

.stat-item {
  text-align: center;
  padding: 10px;
}

.stat-num {
  display: block;
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.stat-label {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* 板块 */
.section {
  padding: 96px 0;
}

.section-dark {
  background: var(--bg-dark);
  color: #fff;
}

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

.section-head {
  max-width: 680px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 18px;
  background: rgba(240, 165, 0, 0.12);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  border-radius: 40px;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.section-dark .section-tag {
  background: rgba(240, 165, 0, 0.16);
  color: var(--accent);
}

.section-title {
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 14px;
}

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

.section-sub {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
}

.section-dark .section-sub {
  color: rgba(255, 255, 255, 0.68);
}

/* 平台介绍 */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.about-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.about-badge-card {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(13, 20, 36, 0.88);
  backdrop-filter: blur(8px);
  color: #fff;
  padding: 16px 22px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.about-badge-card strong {
  display: block;
  font-size: 20px;
  color: var(--accent);
}

.about-badge-card span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

.about-content h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 18px;
}

.about-content p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.85;
  margin-bottom: 24px;
}

.about-list {
  display: grid;
  gap: 14px;
}

.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text-main);
  line-height: 1.6;
}

.about-list li i {
  color: var(--accent);
  font-size: 16px;
  margin-top: 4px;
}

/* 服务亮点 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(240, 165, 0, 0.3);
}

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

.feature-icon {
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(240, 165, 0, 0.15) 0%, rgba(240, 165, 0, 0.05) 100%);
  color: var(--accent-dark);
  font-size: 22px;
  border-radius: 14px;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 分类入口 */
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.category-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: block;
  min-height: 320px;
}

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

.category-card img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.category-card-content {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 20, 36, 0.92) 0%, rgba(13, 20, 36, 0.35) 55%, rgba(13, 20, 36, 0.1) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px;
  color: #fff;
}

.category-card-content .card-tag {
  display: inline-block;
  align-self: flex-start;
  padding: 5px 16px;
  background: var(--accent);
  color: #0d1424;
  font-size: 12px;
  font-weight: 700;
  border-radius: 40px;
  margin-bottom: 14px;
}

.category-card-content h3 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 10px;
}

.category-card-content p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  margin-bottom: 18px;
}

.card-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.3s ease;
}

.category-card:hover .card-more {
  gap: 12px;
}

/* 资讯列表 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(240, 165, 0, 0.25);
}

.news-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.news-cat {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(240, 165, 0, 0.12);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  border-radius: 40px;
}

.news-date {
  font-size: 13px;
  color: var(--text-light);
}

.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card h3 a {
  transition: color 0.3s ease;
}

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

.news-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-more {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.3s ease, gap 0.3s ease;
}

.news-card:hover .news-more {
  color: var(--accent-dark);
  gap: 12px;
}

.empty-tip {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-white);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 16px;
}

/* 流程 */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.step-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition);
}

.step-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-6px);
  border-color: rgba(240, 165, 0, 0.4);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #0d1424;
  font-size: 20px;
  font-weight: 800;
  border-radius: 16px;
  margin-bottom: 20px;
  box-shadow: 0 8px 24px rgba(240, 165, 0, 0.3);
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}

.step-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.faq-item.active {
  box-shadow: var(--shadow-md);
  border-color: rgba(240, 165, 0, 0.3);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 26px;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  transition: color 0.3s ease;
}

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

.faq-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(240, 165, 0, 0.12);
  color: var(--accent-dark);
  border-radius: 50%;
  font-size: 14px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 26px 24px;
}

.faq-answer p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

/* CTA */
.cta-section {
  position: relative;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(13, 20, 36, 0.95) 0%, rgba(13, 20, 36, 0.85) 50%, rgba(240, 165, 0, 0.25) 100%);
}

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

.cta-inner h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 18px;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* 页脚 */
.site-footer {
  background: var(--bg-dark);
  padding: 72px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .site-logo {
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.55);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.footer-col ul {
  display: grid;
  gap: 12px;
}

.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: color 0.3s ease;
}

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

.footer-col ul li span {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom .container-custom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

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

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

  .about-grid {
    gap: 40px;
  }

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

@media (max-width: 768px) {
  .site-header {
    top: 10px;
    padding: 0 12px;
  }

  .nav-dock {
    padding: 10px 16px;
    border-radius: 40px;
  }

  .logo-name {
    font-size: 15px;
  }

  .logo-badge {
    width: 32px;
    height: 32px;
    font-size: 13px;
    border-radius: 10px;
  }

  .nav-links a {
    padding: 6px 12px;
    font-size: 13px;
  }

  .btn-primary {
    padding: 9px 18px;
    font-size: 13px;
  }

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

  .section {
    padding: 72px 0;
  }

  .section-head {
    margin-bottom: 44px;
  }

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

  .about-image img {
    height: 320px;
  }

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

  .category-card img {
    height: 260px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-bottom .container-custom {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .site-header {
    top: 8px;
  }

  .nav-dock {
    padding: 8px 12px;
    border-radius: 30px;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
  }

  .nav-links a {
    padding: 5px 12px;
    font-size: 13px;
  }

  .logo-name {
    font-size: 14px;
  }

  .logo-badge {
    width: 30px;
    height: 30px;
    font-size: 12px;
  }

  .btn-primary {
    padding: 8px 16px;
    font-size: 13px;
  }

  .hero-title {
    font-size: 32px;
  }

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

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

  .hero-meta {
    gap: 16px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    padding: 28px 0;
  }

  .stat-num {
    font-size: 28px;
  }

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

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

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

  .section {
    padding: 60px 0;
  }

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

  .faq-question {
    font-size: 15px;
    padding: 18px 18px;
  }

  .faq-item.active .faq-answer {
    padding: 0 18px 20px;
  }

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

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

/* roulang page: category1 */
:root {
      --primary: #1a56db;
      --primary-dark: #133e9e;
      --accent: #f59e0b;
      --ink: #0f172a;
      --soft: #f1f5f9;
      --line: #e2e8f0;
      --radius-sm: 0.75rem;
      --radius-md: 1rem;
      --radius-lg: 1.5rem;
      --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
      --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.1);
      --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.14);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      background: #fff;
      color: var(--ink);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    body.nav-scrolled {
      padding-top: 0;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.25s ease;
    }

    .container-custom {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* ===== Header / Dock Nav ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      padding: 1rem 1.5rem 0.5rem;
    }

    .nav-dock {
      max-width: 1180px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-radius: 999px;
      padding: 0.55rem 1.8rem;
      box-shadow: 0 6px 30px rgba(15, 23, 42, 0.08);
    }

    .site-logo {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      font-weight: 700;
      font-size: 1.15rem;
      flex-shrink: 0;
    }

    .logo-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, #1a56db, #133e9e);
      color: #fff;
      border-radius: 14px;
      font-size: 1.05rem;
      font-weight: 800;
      box-shadow: 0 4px 14px rgba(26, 86, 219, 0.35);
    }

    .logo-name {
      color: #0f172a;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0.3rem;
      background: #f8fafc;
      border-radius: 999px;
      padding: 0.25rem;
    }

    .nav-links a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.45rem 1.3rem;
      border-radius: 999px;
      font-size: 0.95rem;
      font-weight: 500;
      color: #475569;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .nav-links a:hover {
      color: var(--primary);
      background: #eef2ff;
    }

    .nav-links a.active {
      background: #fff;
      color: var(--primary);
      font-weight: 600;
      box-shadow: 0 2px 10px rgba(15, 23, 42, 0.08);
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: linear-gradient(135deg, #1a56db, #133e9e);
      color: #fff;
      font-weight: 600;
      font-size: 0.92rem;
      padding: 0.6rem 1.4rem;
      border-radius: 999px;
      border: none;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 4px 16px rgba(26, 86, 219, 0.3);
      white-space: nowrap;
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(26, 86, 219, 0.4);
      color: #fff;
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
    }

    .btn-primary:focus-visible,
    .nav-links a:focus-visible,
    .site-logo:focus-visible {
      outline: 3px solid rgba(26, 86, 219, 0.4);
      outline-offset: 2px;
    }

    .nav-cta {
      flex-shrink: 0;
    }

    .nav-toggle {
      display: none;
      background: #f1f5f9;
      border: none;
      border-radius: 12px;
      width: 42px;
      height: 42px;
      font-size: 1.1rem;
      color: #334155;
      cursor: pointer;
      align-items: center;
      justify-content: center;
      transition: background 0.2s;
    }

    .nav-toggle:hover {
      background: #e2e8f0;
    }

    /* ===== Hero / Banner ===== */
    .category-hero {
      position: relative;
      padding: 7rem 0 8rem;
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.75)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      color: #fff;
      overflow: hidden;
    }

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

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(6px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 999px;
      padding: 0.4rem 1.1rem;
      font-size: 0.85rem;
      font-weight: 500;
      color: #fef3c7;
      margin-bottom: 1.5rem;
    }

    .category-hero h1 {
      font-size: clamp(2.2rem, 4vw, 3.4rem);
      font-weight: 800;
      line-height: 1.22;
      letter-spacing: -0.01em;
      margin-bottom: 1.2rem;
    }

    .category-hero h1 em {
      font-style: normal;
      color: #f59e0b;
    }

    .category-hero p {
      font-size: 1.1rem;
      color: rgba(255, 255, 255, 0.85);
      max-width: 660px;
      margin-bottom: 2rem;
    }

    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }

    .btn-outline-light {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      border: 1px solid rgba(255, 255, 255, 0.6);
      color: #fff;
      font-weight: 500;
      border-radius: 999px;
      padding: 0.6rem 1.4rem;
      transition: all 0.3s ease;
      backdrop-filter: blur(4px);
    }

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

    /* ===== Section general ===== */
    .section-block {
      padding: 5.5rem 0;
    }

    .section-block.alt {
      background: #f8fafc;
    }

    .section-head {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 3.5rem;
    }

    .section-head .kicker {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      background: #eef2ff;
      padding: 0.3rem 1rem;
      border-radius: 999px;
      margin-bottom: 1rem;
      letter-spacing: 0.04em;
    }

    .section-head h2 {
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 1rem;
    }

    .section-head p {
      color: #64748b;
      font-size: 1rem;
    }

    /* ===== Feature cards ===== */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.8rem;
    }

    .feature-card {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 2rem 1.8rem;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .feature-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, #1a56db, #f59e0b);
      opacity: 0;
      transition: opacity 0.3s;
    }

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

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

    .feature-icon {
      width: 56px;
      height: 56px;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 1.2rem;
      background: #eef2ff;
      color: var(--primary);
    }

    .feature-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 0.6rem;
    }

    .feature-card p {
      color: #64748b;
      font-size: 0.95rem;
    }

    /* ===== Event cards ===== */
    .event-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }

    .event-card {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all 0.35s ease;
      display: flex;
      flex-direction: column;
    }

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

    .event-thumb {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
    }

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

    .event-card:hover .event-thumb img {
      transform: scale(1.06);
    }

    .event-thumb .tag-absolute {
      position: absolute;
      top: 1rem;
      left: 1rem;
      background: rgba(15, 23, 42, 0.7);
      backdrop-filter: blur(8px);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 500;
      padding: 0.3rem 0.8rem;
      border-radius: 999px;
    }

    .event-thumb .tag-hot {
      background: linear-gradient(135deg, #f59e0b, #ef4444);
      color: #fff;
      font-weight: 600;
    }

    .event-body {
      padding: 1.6rem 1.6rem 1.4rem;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .event-body h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
      line-height: 1.4;
    }

    .event-body p {
      color: #64748b;
      font-size: 0.9rem;
      margin-bottom: 1rem;
      flex: 1;
    }

    .event-meta {
      display: flex;
      align-items: center;
      gap: 1rem;
      color: #94a3b8;
      font-size: 0.8rem;
      border-top: 1px solid #f1f5f9;
      padding-top: 0.9rem;
    }

    .event-meta span {
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
    }

    /* ===== Steps / Process ===== */
    .steps-section {
      background: linear-gradient(135deg, #0f172a, #1e293b);
      color: #fff;
    }

    .steps-section .section-head h2,
    .steps-section .section-head p {
      color: #fff;
    }

    .steps-section .section-head p {
      color: rgba(255, 255, 255, 0.7);
    }

    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      counter-reset: step;
    }

    .step-item {
      position: relative;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 2rem 1.6rem;
      text-align: center;
      transition: all 0.3s ease;
      backdrop-filter: blur(6px);
    }

    .step-item:hover {
      background: rgba(255, 255, 255, 0.12);
      transform: translateY(-4px);
    }

    .step-num {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, #f59e0b, #f97316);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.15rem;
      color: #fff;
      margin: 0 auto 1.2rem;
      box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
    }

    .step-item h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }

    .step-item p {
      font-size: 0.88rem;
      color: rgba(255, 255, 255, 0.7);
    }

    /* ===== Info list ===== */
    .info-layout {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 3rem;
      align-items: start;
    }

    .info-list {
      list-style: none;
    }

    .info-list li {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      padding: 1.4rem 0;
      border-bottom: 1px solid var(--line);
      transition: padding-left 0.25s ease;
    }

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

    .info-list li:hover {
      padding-left: 0.4rem;
    }

    .info-date {
      flex-shrink: 0;
      min-width: 82px;
      text-align: center;
      background: #f1f5f9;
      border-radius: 14px;
      padding: 0.6rem 0.4rem;
    }

    .info-date .day {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }

    .info-date .month {
      font-size: 0.8rem;
      color: #64748b;
    }

    .info-content h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 0.3rem;
    }

    .info-content p {
      color: #64748b;
      font-size: 0.9rem;
    }

    .side-card {
      background: #f8fafc;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 2rem;
      position: sticky;
      top: 100px;
    }

    .side-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }

    .side-card ul {
      list-style: none;
      margin-bottom: 1.5rem;
    }

    .side-card ul li {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.5rem 0;
      color: #475569;
      font-size: 0.92rem;
    }

    .side-card ul li i {
      color: var(--primary);
      width: 20px;
      text-align: center;
    }

    /* ===== FAQ ===== */
    .faq-wrap {
      max-width: 780px;
      margin: 0 auto;
    }

    .faq-item {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      padding: 0;
      margin-bottom: 1rem;
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .faq-item:hover {
      border-color: #c7d2fe;
      box-shadow: var(--shadow-sm);
    }

    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding: 1.2rem 1.5rem;
      cursor: pointer;
      font-weight: 600;
      font-size: 1rem;
      list-style: none;
    }

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

    .faq-item summary .fa-chevron-down {
      color: #94a3b8;
      transition: transform 0.3s ease;
      flex-shrink: 0;
    }

    .faq-item[open] summary .fa-chevron-down {
      transform: rotate(180deg);
    }

    .faq-item .faq-answer {
      padding: 0 1.5rem 1.3rem;
      color: #64748b;
      font-size: 0.95rem;
      border-top: 1px solid #f1f5f9;
      padding-top: 1rem;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: 5rem 0;
      background: linear-gradient(135deg, #1a56db, #133e9e);
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .cta-section::after {
      content: "";
      position: absolute;
      right: -80px;
      top: -80px;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.1);
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 620px;
      margin: 0 auto;
    }

    .cta-inner h2 {
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      font-weight: 800;
      margin-bottom: 1rem;
    }

    .cta-inner p {
      color: rgba(255, 255, 255, 0.85);
      margin-bottom: 1.8rem;
      font-size: 1.05rem;
    }

    .btn-cta-light {
      display: inline-flex;
      align-items: center;
      gap: 0.6rem;
      background: #fff;
      color: #133e9e;
      font-weight: 700;
      padding: 0.85rem 2.2rem;
      border-radius: 999px;
      box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
      transition: all 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .btn-cta-light:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
      color: #133e9e;
    }

    .btn-cta-light:active {
      transform: translateY(0) scale(0.98);
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding-top: 4rem;
      border-top: 4px solid rgba(26, 86, 219, 0.6);
    }

    .site-footer .site-logo .logo-name {
      color: #fff;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 1fr;
      gap: 3rem;
      padding-bottom: 3rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .footer-brand p {
      color: #94a3b8;
      font-size: 0.92rem;
      margin-top: 1rem;
      max-width: 360px;
      line-height: 1.7;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 1.2rem;
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col ul li {
      margin-bottom: 0.6rem;
      font-size: 0.9rem;
    }

    .footer-col ul a {
      color: #94a3b8;
      transition: color 0.2s;
    }

    .footer-col ul a:hover {
      color: #f59e0b;
    }

    .footer-col ul span {
      color: #94a3b8;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }

    .footer-bottom {
      padding: 1.6rem 0;
    }

    .footer-bottom .container-custom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 1rem;
      flex-wrap: wrap;
      color: #64748b;
      font-size: 0.85rem;
    }

    .footer-bottom span:last-child {
      font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
      color: #475569;
    }

    /* ===== Reveal animation ===== */
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

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

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

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

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

      .info-layout {
        grid-template-columns: 1fr;
      }

      .side-card {
        position: static;
      }
    }

    @media (max-width: 768px) {
      .nav-dock {
        flex-wrap: wrap;
        border-radius: 24px;
        padding: 0.75rem 1rem;
      }

      .nav-links {
        order: 3;
        width: 100%;
        justify-content: center;
        background: transparent;
        padding: 0.25rem 0;
        gap: 0.2rem;
      }

      .nav-links a {
        font-size: 0.9rem;
        padding: 0.35rem 1rem;
        color: #64748b;
        background: #f8fafc;
      }

      .nav-links a.active {
        background: #1a56db;
        color: #fff;
        box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
      }

      .nav-cta {
        margin-left: auto;
      }

      .category-hero {
        padding: 4.5rem 0 5.5rem;
      }

      .section-block {
        padding: 4rem 0;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }

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

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

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

    @media (max-width: 520px) {
      .container-custom {
        padding-left: 1rem;
        padding-right: 1rem;
      }

      .nav-dock {
        padding: 0.6rem 0.9rem;
        gap: 0.6rem;
      }

      .site-logo {
        font-size: 1rem;
      }

      .logo-badge {
        width: 34px;
        height: 34px;
        font-size: 0.9rem;
        border-radius: 12px;
      }

      .btn-primary {
        font-size: 0.8rem;
        padding: 0.5rem 1rem;
      }

      .nav-links {
        flex-direction: column;
        align-items: stretch;
        gap: 0.35rem;
        background: transparent;
        padding: 0;
      }

      .nav-links a {
        padding: 0.4rem 0.8rem;
        justify-content: flex-start;
      }

      .category-hero h1 {
        font-size: 1.8rem;
      }

      .category-hero p {
        font-size: 1rem;
      }

      .hero-actions {
        flex-direction: column;
        width: 100%;
      }

      .hero-actions .btn-primary,
      .hero-actions .btn-outline-light {
        justify-content: center;
        width: 100%;
      }

      .event-meta {
        flex-wrap: wrap;
        gap: 0.6rem;
      }

      .footer-bottom .container-custom {
        flex-direction: column;
        justify-content: center;
        text-align: center;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
      }

      .reveal {
        opacity: 1;
        transform: none;
      }
    }

/* roulang page: article */
:root {
            --primary: #1a2a6a;
            --primary-dark: #101b45;
            --primary-light: #233684;
            --accent: #e8a33d;
            --accent-dark: #d18a2a;
            --accent-light: #fdf0dd;
            --body-bg: #f5f6fb;
            --white: #ffffff;
            --gray-bg: #eef0f7;
            --text-main: #161a2b;
            --text-body: #3d4259;
            --text-muted: #7a8199;
            --border: #e3e6f0;
            --radius-lg: 22px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.12);
            --container: 1200px;
            --header-h: 84px;
            --transition: all 0.28s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
            background: var(--body-bg);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        .container-custom {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 100;
            padding: 0 24px;
            margin-top: 16px;
            pointer-events: none;
        }

        .nav-dock {
            max-width: 1180px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.7);
            box-shadow: var(--shadow-md);
            border-radius: 60px;
            padding: 12px 24px;
            pointer-events: auto;
            transition: var(--transition);
        }

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

        .logo-badge {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            letter-spacing: 0.5px;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(26, 42, 106, 0.35);
        }

        .logo-name {
            font-size: 17px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            gap: 8px;
            align-items: center;
            margin: 0 24px;
        }

        .nav-links a {
            padding: 9px 20px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-body);
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-links a:hover {
            background: rgba(26, 42, 106, 0.06);
            color: var(--primary);
        }

        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 42, 106, 0.25);
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            padding: 11px 24px;
            border-radius: 40px;
            border: none;
            box-shadow: 0 6px 18px rgba(26, 42, 106, 0.3);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(26, 42, 106, 0.4);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(26, 42, 106, 0.3);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            padding: 11px 24px;
            border-radius: 40px;
            border: none;
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            color: #fff;
            box-shadow: 0 10px 25px rgba(232, 163, 61, 0.45);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 2px solid rgba(255, 255, 255, 0.65);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: 40px;
            transition: var(--transition);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }

        /* Article Hero */
        .article-hero {
            position: relative;
            padding: 130px 0 80px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: #fff;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(16, 27, 69, 0.88), rgba(26, 42, 106, 0.72));
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 18px;
        }

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

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

        .breadcrumb span {
            color: rgba(255, 255, 255, 0.55);
        }

        .article-hero h1 {
            font-size: clamp(26px, 4vw, 42px);
            font-weight: 800;
            line-height: 1.35;
            max-width: 820px;
            margin-bottom: 22px;
            letter-spacing: 0.5px;
        }

        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 13px;
            padding: 5px 16px;
            border-radius: 30px;
            box-shadow: 0 4px 12px rgba(232, 163, 61, 0.3);
        }

        .badge-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-body);
            font-weight: 600;
            font-size: 13px;
            padding: 4px 14px;
            border-radius: 30px;
            transition: var(--transition);
        }

        .badge-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* Article Main */
        .article-main {
            padding: 70px 0 50px;
        }

        .article-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 40px;
            align-items: start;
        }

        .article-content-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 40px;
            border: 1px solid var(--border);
        }

        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
        }

        .article-body p {
            margin-bottom: 1.5em;
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-main);
            margin: 1.6em 0 0.8em;
            padding-left: 14px;
            border-left: 4px solid var(--accent);
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin: 1.4em 0 0.6em;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.5em 1.4em;
        }

        .article-body ul li {
            margin-bottom: 0.5em;
            position: relative;
        }

        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid var(--accent);
            font-weight: 600;
        }

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

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .article-tags span {
            font-size: 14px;
            color: var(--text-muted);
            margin-right: 4px;
        }

        .article-tags a {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-body);
            background: var(--gray-bg);
            padding: 5px 14px;
            border-radius: 30px;
            transition: var(--transition);
        }

        .article-tags a:hover {
            background: var(--primary);
            color: #fff;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
        }

        .article-share span {
            font-size: 14px;
            color: var(--text-muted);
        }

        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--gray-bg);
            color: var(--text-body);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            transition: var(--transition);
        }

        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 6px 16px rgba(26, 42, 106, 0.25);
        }

        /* Not Found */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found-box .nf-icon {
            font-size: 56px;
            color: var(--accent);
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 28px;
            transition: var(--transition);
        }

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

        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .sidebar-card h3::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 36px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .sidebar-info {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-info li {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            padding-bottom: 10px;
            border-bottom: 1px dashed var(--border);
        }

        .sidebar-info li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-info .label {
            color: var(--text-muted);
            font-weight: 500;
        }

        .sidebar-info .value {
            color: var(--text-main);
            font-weight: 600;
            text-align: right;
        }

        .sidebar-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-body);
            font-weight: 600;
            font-size: 14px;
            background: var(--gray-bg);
            margin-bottom: 10px;
            transition: var(--transition);
        }

        .sidebar-link:last-child {
            margin-bottom: 0;
        }

        .sidebar-link i {
            width: 18px;
            color: var(--primary);
            font-size: 14px;
        }

        .sidebar-link:hover {
            background: var(--primary);
            color: #fff;
            transform: translateX(4px);
        }

        .sidebar-link:hover i {
            color: var(--accent);
        }

        .sidebar-mini-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
        }

        .sidebar-mini-card img {
            width: 100%;
            height: 90px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .sidebar-mini-card:hover img {
            transform: scale(1.05);
        }

        .sidebar-mini-card .mini-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent, rgba(16, 27, 69, 0.85));
            display: flex;
            align-items: flex-end;
            padding: 12px 14px;
        }

        .sidebar-mini-card .mini-overlay span {
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }

        /* Related Posts */
        .related-posts {
            padding: 70px 0;
            background: var(--white);
            border-top: 1px solid var(--border);
        }

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

        .section-head .section-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 20px;
            border-radius: 30px;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .section-head h2 {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 15px;
            margin-top: 12px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .related-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--white);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: block;
        }

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

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

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

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

        .related-card .card-img .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            font-size: 12px;
            padding: 4px 14px;
        }

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

        .related-card .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: var(--transition);
        }

        .related-card:hover .card-body h3 {
            color: var(--primary);
        }

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

        .related-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }

        /* CTA */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 80%, rgba(232, 163, 61, 0.18), transparent 50%);
        }

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

        .cta-section h2 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            max-width: 620px;
            margin: 0 auto 32px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-note {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            margin-top: 22px;
            letter-spacing: 0.5px;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

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

        .footer-brand .logo-name {
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
        }

        .footer-col ul a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

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

        .footer-col ul span i {
            margin-right: 8px;
            color: var(--accent);
        }

        .footer-bottom {
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-bottom .container-custom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* Focus */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(232, 163, 61, 0.5);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-dock {
                padding: 10px 16px;
            }

            .nav-links {
                margin: 0 12px;
            }

            .nav-links a {
                padding: 8px 14px;
                font-size: 14px;
            }

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

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

            .article-sidebar {
                flex-direction: row;
                align-items: stretch;
            }

            .sidebar-card {
                flex: 1;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                top: 8px;
                padding: 0 12px;
                margin-top: 8px;
            }

            .nav-dock {
                flex-wrap: wrap;
                gap: 8px;
            }

            .nav-links {
                order: 3;
                width: 100%;
                overflow-x: auto;
                padding: 6px 0;
                justify-content: flex-start;
                gap: 6px;
                scrollbar-width: none;
            }

            .nav-links::-webkit-scrollbar {
                display: none;
            }

            .nav-links a {
                padding: 7px 14px;
                font-size: 13px;
            }

            .nav-cta .btn-primary {
                padding: 9px 18px;
                font-size: 13px;
            }

            .article-hero {
                padding: 110px 0 50px;
            }

            .article-content-card {
                padding: 24px 18px;
            }

            .article-grid {
                gap: 24px;
            }

            .article-sidebar {
                flex-direction: column;
            }

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

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

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

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

            .logo-name {
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .nav-cta .btn-primary span {
                display: none;
            }

            .article-hero h1 {
                font-size: 22px;
            }

            .article-tags {
                gap: 6px;
            }

            .badge {
                font-size: 12px;
                padding: 4px 12px;
            }

            .related-card .card-img {
                height: 160px;
            }
        }