/* roulang page: index */
:root {
  --primary: #c9a24a;
  --primary-dark: #a88636;
  --primary-light: #ead8af;
  --primary-bg: #faf5ea;
  --secondary: #16132b;
  --secondary-light: #2a2547;
  --bg: #f7f5f0;
  --card-bg: #ffffff;
  --text: #1c1a24;
  --text-muted: #6f6b7a;
  --border: #e8e4dc;
  --border-light: #f0ede6;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.14);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

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

input {
  font-family: inherit;
}

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

.section {
  padding: 88px 0;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-bg);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 40px;
  border: 1px solid rgba(201, 162, 74, 0.25);
  margin-bottom: 14px;
  letter-spacing: 0.3px;
}

.section-tag i {
  font-size: 12px;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.5px;
  color: var(--text);
}

.section-title span {
  color: var(--primary);
}

.section-desc {
  margin-top: 14px;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.8;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 1px 20px rgba(22, 19, 43, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 20px;
}

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

.brand-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 12px;
  color: #fff;
  font-size: 17px;
  box-shadow: 0 4px 14px rgba(201, 162, 74, 0.35);
}

.brand-text {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.3px;
  white-space: nowrap;
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  padding: 9px 18px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--primary-dark);
  background: var(--primary-bg);
}

.nav-link.active {
  color: var(--primary-dark);
  background: var(--primary-bg);
  font-weight: 600;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box input {
  width: 200px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 0 42px 0 18px;
  font-size: 14px;
  background: #f8f7f4;
  transition: var(--transition);
  outline: none;
}

.search-box input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(201, 162, 74, 0.15);
  width: 230px;
}

.search-box button {
  position: absolute;
  right: 4px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
}

.search-box button:hover {
  color: var(--primary);
  background: var(--primary-bg);
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 22px;
  background: var(--secondary);
  color: #fff;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-nav:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(168, 134, 54, 0.35);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--secondary);
  background: var(--bg);
  transition: var(--transition);
}

.nav-toggle:hover {
  background: var(--border-light);
}

/* Hero */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  padding: 80px 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(22, 19, 43, 0.88) 0%, rgba(22, 19, 43, 0.65) 45%, rgba(22, 19, 43, 0.35) 100%);
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to top, var(--bg), transparent);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 620px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  padding: 8px 20px;
  border-radius: 40px;
  font-size: 13px;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}

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

.hero h1 {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.2;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
}

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

.hero-sub {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 50px;
  padding: 0 32px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 6px 24px rgba(168, 134, 54, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 32px rgba(168, 134, 54, 0.5);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}

.hero-stats .stat-item {
  color: rgba(255, 255, 255, 0.9);
}

.hero-stats .stat-num {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  font-family: Georgia, serif;
}

.hero-stats .stat-num i {
  font-size: 20px;
  color: var(--primary);
  margin-right: 2px;
}

.hero-stats .stat-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.5px;
}

/* Cards */
.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(201, 162, 74, 0.3);
}

/* Feature cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  padding: 40px 32px;
  text-align: left;
  position: relative;
  overflow: hidden;
}

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

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

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: var(--primary-bg);
  color: var(--primary-dark);
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 8px 20px rgba(201, 162, 74, 0.35);
  transform: scale(1.05);
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.75;
}

/* Category cards */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.category-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: block;
}

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

.category-cover {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

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

.category-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(22, 19, 43, 0.55), transparent 60%);
}

.category-body {
  padding: 26px 28px;
}

.category-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 8px;
}

.category-body p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-dark);
}

.category-link i {
  transition: transform 0.3s ease;
}

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

/* Process / Steps */
.process-section {
  background: var(--secondary);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.process-section::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 74, 0.15), transparent 70%);
  top: -200px;
  right: -150px;
}

.process-section .section-tag {
  background: rgba(201, 162, 74, 0.12);
  border-color: rgba(201, 162, 74, 0.3);
  color: var(--primary);
}

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

.process-section .section-desc {
  color: rgba(255, 255, 255, 0.7);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
  z-index: 2;
}

.process-step {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.process-step:hover {
  background: rgba(201, 162, 74, 0.08);
  border-color: rgba(201, 162, 74, 0.25);
  transform: translateY(-4px);
}

.step-num {
  width: 48px;
  height: 48px;
  margin: 0 auto 18px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 6px 16px rgba(201, 162, 74, 0.3);
}

.process-step h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}

.process-step p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
}

/* Latest news */
.news-section {
  background: var(--bg);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-item {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: rgba(201, 162, 74, 0.3);
}

.news-date {
  flex-shrink: 0;
  width: 66px;
  height: 66px;
  background: var(--primary-bg);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--primary-dark);
}

.news-date .day {
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
}

.news-date .month {
  font-size: 12px;
  margin-top: 4px;
  font-weight: 500;
}

.news-content {
  flex: 1;
  min-width: 0;
}

.news-tag {
  display: inline-block;
  background: var(--primary-bg);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 20px;
  margin-bottom: 8px;
}

.news-content h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-content h3 a:hover {
  color: var(--primary-dark);
}

.news-content 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;
  margin-bottom: 8px;
}

.news-meta {
  font-size: 12px;
  color: #aaa;
  display: flex;
  align-items: center;
  gap: 10px;
}

.empty-tip {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px;
  color: var(--text-muted);
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border);
  font-size: 15px;
}

/* Featured picks */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.featured-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: block;
}

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

.featured-cover {
  position: relative;
  height: 170px;
  overflow: hidden;
}

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

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

.featured-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(22, 19, 43, 0.75);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
}

.featured-body {
  padding: 20px;
}

.featured-body h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.5;
}

.featured-body p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Stats */
.stats-section {
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  position: relative;
  padding: 88px 0;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(22, 19, 43, 0.95) 0%, rgba(22, 19, 43, 0.85) 100%);
}

.stats-inner {
  position: relative;
  z-index: 2;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-card {
  padding: 32px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(6px);
  transition: var(--transition);
}

.stat-card:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
}

.stat-card .icon {
  font-size: 30px;
  color: var(--primary);
  margin-bottom: 12px;
}

.stat-card .num {
  font-size: 40px;
  font-weight: 900;
  color: #fff;
  font-family: Georgia, serif;
  line-height: 1.2;
}

.stat-card .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 6px;
}

/* FAQ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0;
  transition: var(--transition);
  overflow: hidden;
}

.faq-item[open] {
  box-shadow: var(--shadow-sm);
  border-color: rgba(201, 162, 74, 0.3);
}

.faq-item summary {
  padding: 22px 26px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  position: relative;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
}

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

.faq-item summary .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-bg);
  color: var(--primary-dark);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}

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

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

.faq-item .faq-answer {
  padding: 0 26px 22px 62px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* CTA */
.cta-section {
  padding: 88px 0;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 74, 0.2), transparent 70%);
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 30px;
  line-height: 1.8;
}

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

.btn-white {
  background: #fff;
  color: var(--secondary);
}

.btn-white:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(201, 162, 74, 0.35);
}

/* Footer */
.site-footer {
  background: #12101f;
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-brand i {
  color: var(--primary);
}

.footer-about p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 22px;
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-3px);
}

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

.footer-links h4::after,
.footer-contact h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.footer-links a {
  display: block;
  padding: 5px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 8px;
}

.footer-contact p {
  font-size: 14px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.6;
}

.footer-contact i {
  color: var(--primary);
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}

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

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

/* Responsive */
@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px;
    gap: 8px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(-120%);
    transition: var(--transition);
    border-bottom: 1px solid var(--border-light);
    z-index: 99;
    align-items: stretch;
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .nav-link {
    text-align: center;
    padding: 14px;
    font-size: 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .search-box input {
    width: 160px;
  }

  .search-box input:focus {
    width: 180px;
  }

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

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

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

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

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

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

  .hero h1 {
    font-size: 42px;
  }
}

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

  .section-title {
    font-size: 28px;
  }

  .header-inner {
    height: 64px;
  }

  .main-nav {
    top: 64px;
  }

  .brand-text {
    font-size: 15px;
  }

  .brand-icon {
    width: 36px;
    height: 36px;
    font-size: 15px;
  }

  .search-box {
    display: none;
  }

  .btn-nav {
    height: 36px;
    padding: 0 18px;
    font-size: 13px;
  }

  .hero {
    min-height: 520px;
    padding: 60px 0;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-sub {
    font-size: 15px;
  }

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

  .btn {
    width: 100%;
  }

  .hero-stats {
    gap: 20px;
  }

  .hero-stats .stat-item {
    font-size: 13px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .category-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .process-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .news-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .featured-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stat-card .num {
    font-size: 32px;
  }

  .cta-inner h2 {
    font-size: 26px;
  }

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

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

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .section {
    padding: 52px 0;
  }

  .section-title {
    font-size: 24px;
  }

  .section-desc {
    font-size: 14px;
  }

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

  .hero-badge {
    font-size: 12px;
    padding: 6px 14px;
  }

  .btn-nav {
    display: none;
  }

  .brand-text {
    font-size: 13px;
    max-width: 160px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .brand {
    flex: 1;
    min-width: 0;
  }

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

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

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

  .news-item {
    flex-direction: column;
    padding: 18px;
  }

  .news-date {
    width: 100%;
    height: auto;
    flex-direction: row;
    gap: 8px;
    justify-content: flex-start;
    padding: 8px 14px;
  }

  .news-date .day {
    font-size: 18px;
  }

  .news-date .month {
    margin-top: 0;
  }

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

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

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

/* roulang page: category1 */
:root {
    --primary: #c9a227;
    --primary-dark: #a8861e;
    --primary-light: #f5e7bd;
    --secondary: #7a1e2b;
    --secondary-dark: #5e1721;
    --accent: #1b2a4a;
    --bg: #f8f7f4;
    --bg-alt: #fff;
    --bg-dark: #141414;
    --text: #232323;
    --text-weak: #6b6b6b;
    --border: #e6e2da;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
    --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

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

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

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

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

  button,
  input {
    font-family: inherit;
    border: none;
    outline: none;
  }

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

  /* ===== Header / Nav ===== */
  .site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 74px;
    gap: 20px;
    flex-wrap: nowrap;
  }

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

  .brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), #e6c85c);
    color: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(201, 162, 39, 0.3);
  }

  .brand-text {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: var(--text);
    white-space: nowrap;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: 20px;
  }

  .nav-link {
    padding: 10px 16px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    color: #444;
    white-space: nowrap;
    position: relative;
  }

  .nav-link:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
  }

  .nav-link.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 4px 14px rgba(201, 162, 39, 0.35);
  }

  .header-tools {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
  }

  .search-box {
    display: flex;
    align-items: center;
    background: #f4f3f0;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0 6px 0 16px;
    height: 42px;
    transition: var(--transition);
  }

  .search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.15);
    background: #fff;
  }

  .search-box input {
    background: transparent;
    border: none;
    font-size: 14px;
    color: var(--text);
    width: 130px;
  }

  .search-box input::placeholder {
    color: #999;
  }

  .search-box button {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: var(--transition);
  }

  .search-box button:hover {
    transform: scale(1.08);
    box-shadow: 0 4px 10px rgba(201, 162, 39, 0.4);
  }

  .btn-nav {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: #fff;
    padding: 10px 20px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    white-space: nowrap;
    box-shadow: 0 4px 14px rgba(122, 30, 43, 0.3);
    transition: var(--transition);
  }

  .btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(122, 30, 43, 0.4);
    color: #fff;
  }

  .nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: #f4f3f0;
    color: var(--text);
    font-size: 18px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
  }

  /* ===== Hero / Banner ===== */
  .category-hero {
    position: relative;
    background: linear-gradient(135deg, rgba(20, 20, 20, 0.85), rgba(20, 20, 20, 0.5)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: 100px 0;
    color: #fff;
    text-align: center;
  }

  .category-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(to top, var(--bg), transparent);
  }

  .category-hero .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 8px 20px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 20px;
    backdrop-filter: blur(8px);
  }

  .category-hero h1 {
    font-size: 48px;
    font-weight: 900;
    letter-spacing: 2px;
    margin-bottom: 16px;
    line-height: 1.3;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  }

  .category-hero h1 span {
    color: var(--primary);
  }

  .category-hero p {
    max-width: 640px;
    margin: 0 auto;
    font-size: 17px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
  }

  .hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 40px;
    flex-wrap: wrap;
  }

  .hero-stat {
    text-align: center;
  }

  .hero-stat strong {
    display: block;
    font-size: 30px;
    font-weight: 800;
    color: var(--primary);
  }

  .hero-stat span {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.75);
  }

  /* ===== Sections ===== */
  .section {
    padding: 80px 0;
  }

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

  .section-dark {
    background: linear-gradient(135deg, #16151a, #1f1e24);
    color: #fff;
  }

  .section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 48px;
  }

  .section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary-dark);
    background: var(--primary-light);
    padding: 6px 16px;
    border-radius: 999px;
    letter-spacing: 1px;
    margin-bottom: 14px;
    text-transform: uppercase;
  }

  .section-head h2 {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.4;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
  }

  .section-head p {
    color: var(--text-weak);
    font-size: 16px;
    line-height: 1.8;
  }

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

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

  .card {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
  }

  .card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(201, 162, 39, 0.4);
  }

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

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

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

  .card-img::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.35), transparent);
  }

  .card-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    z-index: 2;
  }

  .card-tag.hot {
    background: linear-gradient(135deg, #e8543f, #c93420);
  }

  .card-tag.top {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  }

  .card-body {
    padding: 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
  }

  .card-body h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
  }

  .card-body p {
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 14px;
  }

  .card-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 13px;
    color: var(--text-weak);
  }

  .card-meta i {
    color: var(--primary);
  }

  .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    font-size: 14px;
    color: var(--secondary);
    margin-top: 12px;
  }

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

  /* ===== Feature blocks ===== */
  .feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
  }

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

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

  .feature-img .img-badge {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.95);
    padding: 12px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 700;
    box-shadow: var(--shadow);
    color: var(--text);
  }

  .feature-content h2 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 16px;
  }

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

  .feature-list {
    list-style: none;
    margin: 20px 0 0;
  }

  .feature-list li {
    padding: 10px 0;
    font-size: 15px;
    color: var(--text);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    border-bottom: 1px dashed var(--border);
  }

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

  .feature-list li i {
    color: var(--primary);
    margin-top: 4px;
    font-size: 14px;
  }

  /* ===== Dark section ===== */
  .section-dark .section-head h2 {
    color: #fff;
  }

  .section-dark .section-head p {
    color: rgba(255, 255, 255, 0.6);
  }

  .section-dark .section-tag {
    background: rgba(201, 162, 39, 0.2);
    color: var(--primary);
  }

  .timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 800px;
    margin: 0 auto;
  }

  .timeline-item {
    display: flex;
    gap: 24px;
    position: relative;
    padding-bottom: 40px;
  }

  .timeline-item:last-child {
    padding-bottom: 0;
  }

  .timeline-item::before {
    content: '';
    position: absolute;
    left: 21px;
    top: 48px;
    bottom: 0;
    width: 2px;
    background: rgba(255, 255, 255, 0.15);
  }

  .timeline-item:last-child::before {
    display: none;
  }

  .timeline-num {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-weight: 800;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 16px rgba(201, 162, 39, 0.4);
    z-index: 1;
  }

  .timeline-content {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 20px 24px;
    flex: 1;
    backdrop-filter: blur(6px);
    transition: var(--transition);
  }

  .timeline-content:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(4px);
  }

  .timeline-content h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--primary);
  }

  .timeline-content p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
  }

  /* ===== Stats band ===== */
  .stats-band {
    background: linear-gradient(135deg, #1b1a1f, #2a2830);
    padding: 60px 0;
    border-radius: var(--radius);
    margin: 80px 0;
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
  }

  .stat-item i {
    font-size: 30px;
    color: var(--primary);
    margin-bottom: 12px;
  }

  .stat-item strong {
    display: block;
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 4px;
  }

  .stat-item span {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
  }

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

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

  .faq-item:hover {
    border-color: rgba(201, 162, 39, 0.3);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
  }

  .faq-question {
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: #fff;
  }

  .faq-question i {
    color: var(--primary);
    transition: var(--transition);
    flex-shrink: 0;
  }

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

  .faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }

  .faq-item.open .faq-answer {
    max-height: 300px;
    padding-bottom: 20px;
  }

  .faq-answer p {
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.8;
  }

  /* ===== CTA ===== */
  .cta-box {
    background: linear-gradient(135deg, var(--secondary), #9c2b3a 60%, var(--secondary-dark));
    border-radius: 24px;
    padding: 60px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
  }

  .cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
  }

  .cta-box::after {
    content: '';
    position: absolute;
    bottom: -60%;
    left: -10%;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
  }

  .cta-box h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
  }

  .cta-box p {
    color: rgba(255, 255, 255, 0.8);
    max-width: 520px;
    margin: 0 auto 30px;
    line-height: 1.8;
    position: relative;
    z-index: 1;
  }

  .btn-light {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #fff;
    color: var(--secondary-dark);
    padding: 14px 32px;
    border-radius: 999px;
    font-weight: 800;
    font-size: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    position: relative;
    z-index: 1;
  }

  .btn-light:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
    color: var(--secondary);
  }

  .btn-outline-light {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.5);
    padding: 12px 28px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
    z-index: 1;
    margin-left: 12px;
  }

  .btn-outline-light:hover {
    background: #fff;
    color: var(--secondary-dark);
    border-color: #fff;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: #131313;
    color: rgba(255, 255, 255, 0.7);
    padding-top: 70px;
    margin-top: 0;
    font-size: 14px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 19px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
  }

  .footer-brand i {
    color: var(--primary);
    font-size: 22px;
  }

  .footer-about p {
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 20px;
  }

  .footer-social {
    display: flex;
    gap: 12px;
  }

  .footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
    transition: var(--transition);
  }

  .footer-social a:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-3px);
  }

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

  .footer-links a {
    display: block;
    padding: 5px 0;
    color: rgba(255, 255, 255, 0.55);
    transition: var(--transition);
  }

  .footer-links a:hover {
    color: var(--primary);
    padding-left: 6px;
  }

  .footer-contact p {
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
  }

  .footer-contact i {
    color: var(--primary);
    margin-top: 4px;
  }

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

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

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

  /* ===== Additional utilities ===== */
  .mt-60 {
    margin-top: 60px;
  }

  .text-center {
    text-align: center;
  }

  .badge-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 20px;
  }

  .badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 13px;
    color: #fff;
    transition: var(--transition);
  }

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

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

    .cards-grid-4 {
      grid-template-columns: repeat(2, 1fr);
    }

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

    .feature-img img {
      height: 340px;
    }

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

    .main-nav {
      display: none;
      position: absolute;
      top: 74px;
      left: 0;
      right: 0;
      background: #fff;
      flex-direction: column;
      padding: 16px;
      gap: 8px;
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
      border-bottom: 1px solid var(--border);
    }

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

    .nav-link {
      width: 100%;
      text-align: center;
      padding: 12px;
    }

    .nav-toggle {
      display: flex;
    }

    .search-box input {
      width: 90px;
    }
  }

  @media (max-width: 768px) {
    .header-inner {
      height: 64px;
      gap: 10px;
    }

    .brand-text {
      font-size: 16px;
    }

    .brand-icon {
      width: 34px;
      height: 34px;
      font-size: 15px;
    }

    .search-box {
      display: none;
    }

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

    .category-hero {
      padding: 70px 0;
    }

    .category-hero h1 {
      font-size: 32px;
    }

    .category-hero p {
      font-size: 15px;
    }

    .hero-stats {
      gap: 24px;
    }

    .hero-stat strong {
      font-size: 24px;
    }

    .section {
      padding: 56px 0;
    }

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

    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .cta-box {
      padding: 40px 24px;
    }

    .cta-box h2 {
      font-size: 24px;
    }

    .btn-light,
    .btn-outline-light {
      display: block;
      margin: 10px 0;
      width: 100%;
      justify-content: center;
    }
  }

  @media (max-width: 520px) {
    .container {
      padding: 0 16px;
    }

    .brand-text {
      font-size: 14px;
    }

    .brand-icon {
      width: 30px;
      height: 30px;
      font-size: 13px;
      border-radius: 9px;
    }

    .btn-nav {
      padding: 7px 12px;
      font-size: 12px;
    }

    .btn-nav i {
      display: none;
    }

    .category-hero h1 {
      font-size: 26px;
    }

    .cards-grid {
      grid-template-columns: 1fr;
      gap: 20px;
    }

    .cards-grid-4 {
      grid-template-columns: 1fr;
      gap: 20px;
    }

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

    .timeline-item {
      flex-direction: column;
      gap: 12px;
    }

    .timeline-item::before {
      left: 21px;
      top: 50px;
    }

    .feature-img img {
      height: 240px;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 28px;
    }

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

    .cate-hero-badge {
      font-size: 12px;
    }
  }

/* roulang page: category2 */
:root{
  --primary:#173a6e;
  --primary-dark:#0f2a52;
  --primary-light:#2d5aa7;
  --accent:#d9a72c;
  --accent-dark:#b8891f;
  --bg-white:#ffffff;
  --bg-soft:#f4f7fc;
  --bg-deep:#0f2a52;
  --text-dark:#16233a;
  --text-body:#3f4c66;
  --text-weak:#77839c;
  --border:#e3eaf3;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 12px 30px rgba(17,42,82,.08);
  --shadow-md:0 16px 36px rgba(17,42,82,.12);
  --shadow-lg:0 24px 50px rgba(17,42,82,.16);
  --transition:.25s 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","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-body);
  background:var(--bg-white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input{font-family:inherit}
ul,ol{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  box-shadow:0 4px 20px rgba(17,42,82,.05);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:74px;gap:24px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-icon{
  width:42px;height:42px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:19px;
  box-shadow:0 8px 18px rgba(23,58,110,.28);
}
.brand-text{font-size:20px;font-weight:800;color:var(--text-dark);letter-spacing:.5px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;
  font-size:15px;font-weight:600;color:var(--text-body);
  padding:28px 0;line-height:1;
  letter-spacing:.3px;
}
.nav-link::after{
  content:"";
  position:absolute;left:50%;bottom:18px;
  transform:translateX(-50%);
  width:0;height:3px;border-radius:3px;
  background:var(--accent);
  transition:width var(--transition);
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{width:20px}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{width:20px}
.header-tools{display:flex;align-items:center;gap:14px}
.search-box{
  display:flex;align-items:center;
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:50px;
  padding:0 6px 0 16px;
  height:40px;
  min-width:200px;
  transition:border-color var(--transition),box-shadow var(--transition);
}
.search-box:focus-within{
  border-color:var(--primary-light);
  box-shadow:0 0 0 3px rgba(45,90,167,.12);
  background:var(--bg-white);
}
.search-box input{
  flex:1;border:none;background:transparent;
  font-size:14px;color:var(--text-dark);
  outline:none;
}
.search-box input::placeholder{color:var(--text-weak)}
.search-box button{
  width:32px;height:32px;border-radius:50%;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;transition:background var(--transition);
}
.search-box button:hover{background:var(--primary-dark)}
.btn-nav{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;font-size:14px;font-weight:600;
  padding:10px 22px;border-radius:50px;
  box-shadow:0 8px 18px rgba(23,58,110,.24);
  transition:transform var(--transition),box-shadow var(--transition);
}
.btn-nav:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(23,58,110,.32);color:#fff}
.nav-toggle{display:none;font-size:22px;color:var(--primary);width:42px;height:42px;border-radius:10px;background:var(--bg-soft);align-items:center;justify-content:center}

/* ===== Hero ===== */
.hero-banner{
  position:relative;
  background:linear-gradient(135deg,rgba(10,28,56,.92),rgba(23,58,110,.78)),url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  color:#fff;
  padding:110px 0 96px;
  text-align:center;
  overflow:hidden;
}
.hero-banner::before{
  content:"";
  position:absolute;top:-80px;right:-60px;
  width:320px;height:320px;border-radius:50%;
  background:rgba(217,167,44,.18);
  filter:blur(60px);
}
.hero-banner::after{
  content:"";
  position:absolute;bottom:-100px;left:-40px;
  width:280px;height:280px;border-radius:50%;
  background:rgba(255,255,255,.08);
  filter:blur(50px);
}
.hero-content{position:relative;z-index:2;max-width:860px;margin:0 auto}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);
  backdrop-filter:blur(6px);
  padding:8px 20px;border-radius:50px;
  font-size:14px;font-weight:600;letter-spacing:1px;
  margin-bottom:28px;
}
.hero-tag i{color:var(--accent)}
.hero-banner h1{
  font-size:46px;font-weight:800;line-height:1.2;
  margin-bottom:20px;letter-spacing:1px;
}
.hero-banner h1 span{color:var(--accent)}
.hero-banner p{
  font-size:18px;line-height:1.8;
  color:rgba(255,255,255,.85);
  max-width:680px;margin:0 auto 34px;
}
.hero-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-bottom:38px}
.btn-primary,.btn-outline-light,.btn-light{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;
  padding:14px 32px;border-radius:50px;
  transition:transform var(--transition),box-shadow var(--transition),background var(--transition);
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  color:#fff;
  box-shadow:0 10px 24px rgba(217,167,44,.34);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(217,167,44,.44);color:#fff}
.btn-outline-light{
  border:1.5px solid rgba(255,255,255,.55);
  color:#fff;
  background:rgba(255,255,255,.06);
}
.btn-outline-light:hover{background:rgba(255,255,255,.15);border-color:#fff;transform:translateY(-2px);color:#fff}
.hero-meta{display:flex;justify-content:center;gap:26px;flex-wrap:wrap}
.hero-meta span{font-size:14px;font-weight:600;color:rgba(255,255,255,.9)}
.hero-meta i{color:var(--accent);margin-right:5px}

/* ===== 通用板块 ===== */
.section{padding:96px 0}
.section-head{max-width:680px;margin:0 auto 56px;text-align:center}
.section-tag{
  display:inline-block;
  background:rgba(217,167,44,.12);
  color:var(--accent-dark);
  font-size:13px;font-weight:700;letter-spacing:2px;
  padding:6px 18px;border-radius:50px;
  margin-bottom:14px;
  text-transform:uppercase;
}
.section-head h2{font-size:36px;font-weight:800;color:var(--text-dark);line-height:1.3;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--text-weak);line-height:1.8}

/* ===== 核心服务卡片 ===== */
.services-section{background:var(--bg-soft)}
.cards-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:26px;
}
.service-card{
  background:var(--bg-white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:36px 28px 30px;
  box-shadow:var(--shadow);
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
  position:relative;
  overflow:hidden;
}
.service-card::before{
  content:"";
  position:absolute;top:0;left:0;
  width:100%;height:4px;
  background:linear-gradient(to right,var(--accent),var(--primary-light));
  opacity:0;transition:opacity var(--transition);
}
.service-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:rgba(23,58,110,.16);
}
.service-card:hover::before{opacity:1}
.card-icon{
  width:56px;height:56px;
  border-radius:16px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;font-size:22px;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:22px;
  box-shadow:0 8px 20px rgba(23,58,110,.22);
}
.service-card h3{font-size:19px;font-weight:700;color:var(--text-dark);margin-bottom:12px}
.service-card>p{font-size:14.5px;line-height:1.75;color:var(--text-body);margin-bottom:16px}
.service-card ul{margin-bottom:18px;display:flex;flex-direction:column;gap:7px}
.service-card ul li{
  font-size:13.5px;color:var(--text-weak);
  padding-left:20px;position:relative;
}
.service-card ul li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:0;
  font-size:11px;color:var(--accent);
}
.card-link{
  font-size:14px;font-weight:700;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;
}
.card-link i{transition:transform var(--transition);font-size:12px}
.card-link:hover{color:var(--accent-dark)}
.card-link:hover i{transform:translateX(4px)}

/* ===== 服务流程 ===== */
.process-section{background:var(--bg-white)}
.steps-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:26px;
  counter-reset:step;
}
.step-item{
  position:relative;
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:44px 28px 32px;
  text-align:center;
  transition:transform var(--transition),box-shadow var(--transition);
}
.step-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.step-num{
  position:absolute;top:18px;right:22px;
  font-size:42px;font-weight:800;
  color:rgba(23,58,110,.08);
  line-height:1;
  font-family:Georgia,serif;
}
.step-icon{
  width:64px;height:64px;
  border-radius:50%;
  margin:0 auto 20px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;font-size:24px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 24px rgba(23,58,110,.24);
}
.step-item h3{font-size:18px;font-weight:700;color:var(--text-dark);margin-bottom:10px}
.step-item p{font-size:14px;line-height:1.75;color:var(--text-weak)}

/* ===== 数据区块 ===== */
.stats-section{
  background:linear-gradient(135deg,var(--bg-deep),var(--primary));
  padding:70px 0;
  color:#fff;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:36px;
  text-align:center;
}
.stat-item .stat-num{
  font-size:42px;font-weight:800;
  background:linear-gradient(to right,#fff,var(--accent));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  display:block;
  line-height:1.2;
  margin-bottom:6px;
}
.stat-item .stat-label{font-size:14.5px;font-weight:600;color:rgba(255,255,255,.78);letter-spacing:.5px}

/* ===== 服务特色 ===== */
.feature-section{background:var(--bg-white)}
.feature-row{
  display:flex;align-items:center;gap:60px;
  margin-bottom:80px;
}
.feature-row:last-child{margin-bottom:0}
.feature-row.reverse{flex-direction:row-reverse}
.feature-img{
  flex:0 0 48%;
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--shadow-md);
  position:relative;
}
.feature-img img{
  width:100%;height:360px;
  object-fit:cover;
  transition:transform .5s ease;
}
.feature-row:hover .feature-img img{transform:scale(1.03)}
.feature-img::after{
  content:"拉斯维加斯0567官方网站";
  position:absolute;left:16px;bottom:16px;
  background:rgba(10,28,56,.72);
  color:#fff;font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:50px;
  backdrop-filter:blur(4px);
}
.feature-body{flex:1}
.feature-body .section-tag{margin-bottom:12px}
.feature-body h2{font-size:30px;font-weight:800;color:var(--text-dark);line-height:1.35;margin-bottom:16px}
.feature-body p{font-size:15.5px;line-height:1.85;color:var(--text-body);margin-bottom:22px}
.feature-body ul{display:flex;flex-direction:column;gap:12px}
.feature-body ul li{
  display:flex;align-items:center;gap:10px;
  font-size:15px;font-weight:600;color:var(--text-dark);
  background:var(--bg-soft);
  padding:12px 18px;border-radius:12px;
  border:1px solid var(--border);
}
.feature-body ul li i{color:var(--accent);font-size:16px}

/* ===== 服务内容清单 ===== */
.list-section{background:var(--bg-soft)}
.list-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:30px;
  margin-top:40px;
}
.list-panel{
  background:var(--bg-white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:40px;
  box-shadow:var(--shadow);
  transition:box-shadow var(--transition),transform var(--transition);
}
.list-panel:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.list-panel h3{
  font-size:22px;font-weight:800;color:var(--text-dark);
  display:flex;align-items:center;gap:12px;
  margin-bottom:24px;
}
.list-panel h3 i{
  width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;font-size:18px;
  display:flex;align-items:center;justify-content:center;
}
.list-panel ul{display:flex;flex-direction:column;gap:0}
.list-panel ul li{
  padding:14px 0;
  border-bottom:1px dashed var(--border);
  display:flex;align-items:center;gap:10px;
  font-size:15px;color:var(--text-body);
  transition:color var(--transition),padding-left var(--transition);
}
.list-panel ul li:last-child{border-bottom:none}
.list-panel ul li::before{
  content:"\f460";
  font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--accent);
}
.list-panel ul li:hover{color:var(--primary);padding-left:6px}

/* ===== FAQ ===== */
.faq-section{background:var(--bg-white)}
.faq-list{
  max-width:820px;
  margin:0 auto;
  display:flex;flex-direction:column;gap:18px;
}
.faq-item{
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  overflow:hidden;
  transition:box-shadow var(--transition),border-color var(--transition);
}
.faq-item:hover{box-shadow:var(--shadow);border-color:rgba(23,58,110,.14)}
.faq-item summary{
  cursor:pointer;
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 28px;
  font-size:16px;font-weight:700;color:var(--text-dark);
  gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:14px;color:var(--primary);
  transition:transform var(--transition);
  flex-shrink:0;
  width:32px;height:32px;
  background:rgba(23,58,110,.08);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
}
.faq-item[open] summary{border-bottom:1px solid var(--border)}
.faq-item[open] summary::after{transform:rotate(180deg);background:var(--primary);color:#fff}
.faq-answer{padding:20px 28px 26px;font-size:15px;line-height:1.85;color:var(--text-body)}
.faq-answer a{color:var(--primary);font-weight:600}
.faq-answer a:hover{color:var(--accent-dark)}

/* ===== CTA ===== */
.cta-section{
  background:linear-gradient(135deg,rgba(10,28,56,.93),rgba(23,58,110,.82)),url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  padding:90px 0;
  text-align:center;
}
.cta-box{max-width:720px;margin:0 auto}
.cta-box h2{font-size:36px;font-weight:800;color:#fff;line-height:1.35;margin-bottom:18px}
.cta-box p{font-size:17px;line-height:1.8;color:rgba(255,255,255,.85);margin-bottom:32px}
.btn-light{
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  color:#fff;
  box-shadow:0 10px 28px rgba(217,167,44,.38);
}
.btn-light:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(217,167,44,.5);color:#fff}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--bg-deep);
  color:rgba(255,255,255,.78);
  padding:70px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:46px;
}
.footer-brand{
  display:flex;align-items:center;gap:12px;
  font-size:20px;font-weight:800;color:#fff;
  margin-bottom:18px;
}
.footer-brand i{
  width:40px;height:40px;
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  border-radius:10px;
  font-size:17px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;
}
.footer-about p{font-size:14.5px;line-height:1.85;max-width:360px}
.footer-social{display:flex;gap:12px;margin-top:22px}
.footer-social a{
  width:38px;height:38px;border-radius:10px;
  background:rgba(255,255,255,.08);
  color:#fff;font-size:16px;
  display:flex;align-items:center;justify-content:center;
  transition:background var(--transition),transform var(--transition);
}
.footer-social a:hover{background:var(--accent);transform:translateY(-3px);color:#fff}
.site-footer h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:20px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.72);transition:color var(--transition),padding-left var(--transition)}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-contact p{font-size:14.5px;display:flex;align-items:center;gap:10px;margin-bottom:14px;color:rgba(255,255,255,.72)}
.footer-contact i{color:var(--accent);width:18px;text-align:center}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;
  text-align:center;
  font-size:13.5px;
  color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--accent)}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .header-inner{flex-wrap:wrap;height:auto;padding:14px 0;gap:12px}
  .brand{padding:0}
  .main-nav{order:3;flex-basis:100%;justify-content:flex-start;gap:20px;overflow-x:auto;padding-bottom:4px}
  .nav-link{padding:10px 0;white-space:nowrap}
  .nav-link::after{bottom:2px}
  .cards-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .feature-row{flex-direction:column;gap:40px}
  .feature-row.reverse{flex-direction:column}
  .feature-img{flex:none;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media(max-width:768px){
  .search-box{display:none}
  .btn-nav{padding:10px 16px;font-size:13px}
  .nav-toggle{display:flex}
  .main-nav{
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:var(--bg-white);
    border:1px solid var(--border);
    border-radius:14px;
    padding:8px 16px;
    box-shadow:var(--shadow-md);
    margin-top:8px;
  }
  .main-nav.open{display:flex}
  .nav-link{padding:14px 0;font-size:15px}
  .nav-link::after{display:none}
  .hero-banner{padding:90px 0 72px}
  .hero-banner h1{font-size:32px}
  .hero-banner p{font-size:16px}
  .section{padding:72px 0}
  .section-head h2{font-size:28px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .list-grid{grid-template-columns:1fr}
  .faq-item summary{font-size:15px;padding:18px 20px}
  .cta-section{padding:70px 0}
  .cta-box h2{font-size:28px}
}
@media(max-width:520px){
  .container{padding:0 18px}
  .header-inner{gap:10px}
  .brand-text{font-size:16px}
  .brand-icon{width:36px;height:36px;font-size:16px}
  .btn-nav span{display:none}
  .btn-nav i{font-size:15px}
  .hero-banner h1{font-size:26px}
  .hero-banner p{font-size:15px}
  .hero-actions .btn-primary,.hero-actions .btn-outline-light{width:100%;justify-content:center}
  .hero-meta{flex-direction:column;gap:10px}
  .cards-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .stat-item .stat-num{font-size:34px}
  .feature-body h2{font-size:24px}
  .list-panel{padding:28px 22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom p{font-size:12.5px}
}

/* roulang page: article */
:root {
    --primary: #c9a45c;
    --primary-dark: #a9863d;
    --primary-light: #e6d3a8;
    --secondary: #1b1e2e;
    --secondary-light: #2b2f45;
    --bg: #f7f6f2;
    --surface: #ffffff;
    --text: #1f2430;
    --text-light: #6f7683;
    --border: #e9e6df;
    --radius: 18px;
    --radius-sm: 10px;
    --shadow: 0 6px 24px rgba(27, 30, 46, 0.06);
    --shadow-lg: 0 16px 48px rgba(27, 30, 46, 0.12);
    --transition: all 0.3s ease;
    --header-height: 72px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

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

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

button,
input,
textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

ul,
ol {
    list-style: none;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    height: var(--header-height);
}

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

.brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(201, 164, 92, 0.3);
}

.brand-text {
    font-size: 17px;
    font-weight: 700;
    color: var(--secondary);
    white-space: nowrap;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link {
    padding: 9px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
}

.nav-link:hover {
    background: rgba(201, 164, 92, 0.12);
    color: var(--primary-dark);
}

.nav-link.active {
    background: var(--secondary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(27, 30, 46, 0.15);
}

.header-tools {
    display: flex;
    align-items: center;
    gap: 14px;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 4px 6px 4px 16px;
    transition: var(--transition);
    width: 220px;
}

.search-box:focus-within {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(201, 164, 92, 0.12);
}

.search-box input {
    border: none;
    background: transparent;
    padding: 7px 0;
    font-size: 14px;
    color: var(--text);
    width: 100%;
}

.search-box input::placeholder {
    color: #a5aab4;
}

.search-box button {
    background: var(--primary);
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.search-box button:hover {
    background: var(--primary-dark);
}

.btn-nav {
    background: var(--primary);
    color: #fff;
    padding: 9px 20px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-nav:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(201, 164, 92, 0.35);
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--secondary);
    cursor: pointer;
    transition: var(--transition);
}

.nav-toggle:hover {
    background: rgba(201, 164, 92, 0.1);
    border-color: var(--primary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(201, 164, 92, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 26px rgba(201, 164, 92, 0.4);
}

.btn-secondary {
    background: var(--secondary);
    color: #fff;
}

.btn-secondary:hover {
    background: var(--secondary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(27, 30, 46, 0.25);
}

.btn-light {
    background: #fff;
    color: var(--secondary);
}

.btn-light:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

.btn-outline-light {
    border: 1.5px solid rgba(255, 255, 255, 0.7);
    color: #fff;
    background: transparent;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: #fff;
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.article-hero {
    position: relative;
    padding: 100px 0 72px;
    background-size: cover;
    background-position: center;
    background-color: var(--secondary);
    color: #fff;
}

.article-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, rgba(18, 20, 35, 0.92) 0%, rgba(18, 20, 35, 0.76) 100%);
}

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

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: 16px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.82);
    transition: var(--transition);
}

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

.breadcrumb-sep {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.4);
}

.breadcrumb-current {
    color: #fff;
    max-width: 500px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.article-hero h1 {
    font-size: 38px;
    line-height: 1.35;
    font-weight: 700;
    max-width: 860px;
    margin-bottom: 18px;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.25);
}

.article-hero-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
}

.hero-badge {
    background: var(--primary);
    color: #fff;
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
}

.hero-date {
    color: rgba(255, 255, 255, 0.85);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 36px;
    align-items: start;
}

.article-paper {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border);
}

.article-cover {
    position: relative;
    overflow: hidden;
    height: 400px;
}

.article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-content {
    padding: 36px 40px 16px;
    font-size: 16px;
    line-height: 1.95;
    color: #2a2f3a;
}

.article-content h2 {
    font-size: 24px;
    margin: 32px 0 16px;
    color: var(--secondary);
    padding-left: 14px;
    border-left: 4px solid var(--primary);
    line-height: 1.4;
}

.article-content h3 {
    font-size: 20px;
    margin: 24px 0 12px;
    color: var(--secondary);
}

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

.article-content img {
    border-radius: var(--radius-sm);
    margin: 24px 0;
    box-shadow: var(--shadow);
}

.article-content blockquote {
    margin: 24px 0;
    padding: 20px 24px;
    background: var(--bg);
    border-left: 4px solid var(--primary);
    border-radius: 8px;
    color: var(--text-light);
    font-style: normal;
}

.article-content ul,
.article-content ol {
    margin: 0 0 20px 20px;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content a {
    color: var(--primary-dark);
    text-decoration: underline;
    transition: var(--transition);
}

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

.article-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    padding: 22px 40px 32px;
    margin-top: 24px;
    border-top: 1px solid var(--border);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    color: var(--text-light);
    transition: var(--transition);
}

.tag:hover {
    border-color: var(--primary);
    color: var(--primary-dark);
    background: rgba(201, 164, 92, 0.08);
}

.back-home {
    color: var(--text-light);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.back-home:hover {
    color: var(--primary-dark);
}

.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: calc(var(--header-height) + 24px);
}

.sidebar-box {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    border: 1px solid var(--border);
}

.sidebar-box h3 {
    font-size: 18px;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    color: var(--secondary);
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-box h3::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 42px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.side-post-list {
    display: flex;
    flex-direction: column;
}

.side-post-list li {
    border-bottom: 1px dashed var(--border);
}

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

.side-post-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    transition: var(--transition);
}

.side-post-list a:hover {
    color: var(--primary-dark);
    padding-left: 8px;
}

.side-post-title {
    font-size: 14px;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.5;
}

.side-post-date {
    font-size: 12px;
    color: var(--text-light);
    flex-shrink: 0;
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    background: var(--bg);
    border: 1px solid transparent;
    transition: var(--transition);
}

.category-item:hover {
    background: #fff;
    border-color: var(--primary);
    box-shadow: 0 4px 14px rgba(201, 164, 92, 0.14);
    transform: translateX(4px);
}

.category-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(201, 164, 92, 0.22);
}

.category-name {
    font-weight: 600;
    font-size: 15px;
    color: var(--secondary);
}

.sidebar-highlight {
    background: linear-gradient(145deg, var(--secondary) 0%, #2b2f45 100%);
    color: #fff;
    border: none;
}

.sidebar-highlight h3 {
    color: #fff;
    border-bottom-color: rgba(255, 255, 255, 0.15);
}

.sidebar-highlight p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.75;
}

.sidebar-highlight .btn {
    background: var(--primary);
    color: #fff;
}

.sidebar-highlight .btn:hover {
    background: var(--primary-dark);
}

.nothing-text {
    color: var(--text-light);
    font-size: 14px;
    padding: 12px 0;
    text-align: center;
}

.related-section {
    padding: 70px 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

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

.section-label {
    display: inline-block;
    background: rgba(201, 164, 92, 0.12);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 16px;
    border-radius: 999px;
    margin-bottom: 10px;
    letter-spacing: 0.05em;
}

.section-head h2 {
    font-size: 30px;
    color: var(--secondary);
    margin-bottom: 10px;
    line-height: 1.3;
}

.section-head p {
    color: var(--text-light);
    font-size: 15px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 36px;
}

.content-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: block;
}

.content-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(201, 164, 92, 0.4);
}

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

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

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

.card-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(27, 30, 46, 0.82);
    color: #fff;
    padding: 5px 12px;
    border-radius: 999px;
    font-size: 12px;
    backdrop-filter: blur(6px);
}

.card-body {
    padding: 20px;
}

.card-body h3 {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 8px;
    color: var(--secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 48px;
    transition: var(--transition);
}

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

.card-body p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.65;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-light);
    border-top: 1px solid var(--border);
    padding-top: 12px;
    gap: 8px;
}

.faq-section {
    padding: 70px 0;
    background: var(--bg);
}

.faq-grid {
    max-width: 860px;
    margin: 40px auto 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item[open] {
    border-color: var(--primary);
    box-shadow: 0 6px 22px rgba(0, 0, 0, 0.07);
}

.faq-item summary {
    cursor: pointer;
    padding: 20px 24px;
    padding-right: 54px;
    font-weight: 600;
    font-size: 15px;
    color: var(--secondary);
    list-style: none;
    position: relative;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.faq-item summary i {
    color: var(--primary);
    font-size: 16px;
    width: 24px;
    text-align: center;
}

.faq-item summary::after {
    content: "\f067";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    right: 22px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary);
    font-size: 14px;
    transition: transform 0.3s, content 0.3s;
}

.faq-item[open] summary::after {
    content: "\f068";
    color: var(--primary-dark);
}

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

.faq-answer {
    padding: 0 24px 22px;
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.85;
    padding-left: 58px;
}

.cta-section {
    padding: 80px 0;
    background-size: cover;
    background-position: center;
    position: relative;
    color: #fff;
}

.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(27, 30, 46, 0.82);
}

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

.cta-card h2 {
    font-size: 32px;
    margin-bottom: 12px;
    line-height: 1.3;
}

.cta-card p {
    color: rgba(255, 255, 255, 0.82);
    margin-bottom: 28px;
    font-size: 15px;
}

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

.not-found-section {
    padding: 70px 0;
}

.not-found-card {
    max-width: 640px;
    margin: 0 auto;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 60px 40px;
    text-align: center;
    border: 1px solid var(--border);
}

.not-found-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: rgba(201, 164, 92, 0.12);
    color: var(--primary-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
}

.not-found-card p {
    color: var(--text-light);
    margin-bottom: 24px;
    font-size: 15px;
}

.site-footer {
    background: var(--secondary);
    color: rgba(255, 255, 255, 0.72);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 44px;
}

.footer-brand {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-brand i {
    color: var(--primary);
    font-size: 24px;
}

.footer-about p {
    font-size: 14px;
    line-height: 1.85;
    margin-bottom: 20px;
    max-width: 320px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.16);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.65);
    transition: var(--transition);
    font-size: 15px;
}

.footer-social a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    transform: translateY(-3px);
}

.footer-links h4,
.footer-contact h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after,
.footer-contact h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.footer-links a {
    display: block;
    padding: 5px 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.62);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-light);
    padding-left: 6px;
}

.footer-contact p {
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact i {
    color: var(--primary);
    margin-top: 4px;
    font-size: 14px;
    width: 18px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 18px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
}

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

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

@media (max-width: 1200px) {
    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1024px) {
    .search-box {
        display: none;
    }

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

    .article-sidebar {
        position: static;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

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

    .article-hero h1 {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        gap: 4px;
    }

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

    .main-nav .nav-link {
        padding: 13px 16px;
        text-align: center;
        width: 100%;
        border-radius: 12px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .article-hero {
        padding: 70px 0 50px;
    }

    .article-cover {
        height: 280px;
    }

    .article-content {
        padding: 28px 24px 16px;
    }

    .article-bottom {
        padding: 20px 24px 26px;
    }

    .section-head h2 {
        font-size: 25px;
    }

    .faq-answer {
        padding-left: 24px;
    }

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

    .cta-card h2 {
        font-size: 26px;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }

    .header-tools .btn-nav {
        display: none;
    }

    .brand-text {
        font-size: 15px;
        max-width: 170px;
        white-space: normal;
        line-height: 1.3;
    }

    .article-hero h1 {
        font-size: 25px;
    }

    .article-hero {
        padding: 54px 0 40px;
    }

    .breadcrumb {
        font-size: 12px;
    }

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

    .card-cover {
        height: 200px;
    }

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

    .article-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }

    .cta-buttons .btn {
        width: 100%;
    }

    .footer-grid {
        gap: 24px;
    }
}

/* roulang page: category3 */
:root {
  --primary: #1a1a2e;
  --primary-deep: #0f0f1f;
  --primary-soft: #2a2a4a;
  --accent: #e9b44c;
  --accent-strong: #d99a2b;
  --accent-soft: #f9ecc7;
  --bg-body: #f7f5f0;
  --bg-white: #ffffff;
  --bg-light: #f1efe8;
  --bg-dark: #1e1e32;
  --text-main: #1f2430;
  --text-body: #3e4353;
  --text-muted: #7c8294;
  --border: #e6e0d4;
  --border-light: #eee9df;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-xs: 0 2px 6px rgba(26, 26, 46, 0.05);
  --shadow-sm: 0 4px 16px rgba(26, 26, 46, 0.07);
  --shadow-md: 0 10px 30px rgba(26, 26, 46, 0.09);
  --shadow-lg: 0 20px 50px rgba(26, 26, 46, 0.14);
  --transition: all 0.25s ease;
  --container: 1200px;
  --header-h: 76px;
}

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

html {
  scroll-behavior: smooth;
}

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

ul, ol, li {
  list-style: none;
}

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

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

button, input {
  font-family: inherit;
  border: none;
  background: none;
  outline: none;
}

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

.section {
  padding: 80px 0;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}

.section-head .section-tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 12px;
}

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

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  line-height: 1.4;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(233, 180, 76, 0.35);
}

.btn-primary:hover {
  background: var(--accent-strong);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(233, 180, 76, 0.45);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
  background: transparent;
}

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

.btn-dark {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(26, 26, 46, 0.25);
}

.btn-dark:hover {
  background: var(--primary-soft);
  transform: translateY(-2px);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-xs);
  height: var(--header-h);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 20px;
}

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

.brand-icon {
  width: 38px;
  height: 38px;
  background: var(--primary);
  color: var(--accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  box-shadow: var(--shadow-sm);
}

.brand-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 10px;
}

.nav-link {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  border-radius: 30px;
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--primary);
  background: var(--bg-light);
}

.nav-link.active {
  color: var(--primary);
  background: var(--accent-soft);
  font-weight: 600;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-light);
  border-radius: 30px;
  padding: 7px 8px 7px 18px;
  border: 1px solid transparent;
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(233, 180, 76, 0.15);
}

.search-box input {
  width: 140px;
  font-size: 14px;
  color: var(--text-main);
  background: transparent;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box button {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--accent);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}

.search-box button:hover {
  background: var(--accent);
  color: var(--primary);
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  padding: 9px 22px;
  border-radius: 30px;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-nav:hover {
  background: var(--accent);
  color: var(--primary);
  box-shadow: 0 6px 18px rgba(233, 180, 76, 0.4);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--bg-light);
  color: var(--primary);
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* Page Hero */
.page-hero {
  position: relative;
  padding: 110px 0 96px;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  text-align: center;
  isolation: isolate;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 15, 31, 0.78) 0%, rgba(26, 26, 46, 0.62) 100%);
  z-index: -1;
}

.page-hero .crumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.1);
  padding: 6px 18px;
  border-radius: 30px;
  backdrop-filter: blur(4px);
  margin-bottom: 24px;
}

.page-hero .crumb a:hover {
  color: var(--accent);
}

.page-hero h1 {
  font-size: 46px;
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.82);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

.page-hero .hero-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Category Grid */
.category-section {
  background: var(--bg-white);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.category-card {
  background: var(--bg-body);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.4s ease;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  background: #fff;
  border-color: var(--accent);
}

.category-card:hover::after {
  width: 70%;
}

.category-card .card-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  transition: var(--transition);
}

.category-card:hover .card-icon {
  background: var(--accent);
  color: var(--primary);
  transform: rotate(-6deg) scale(1.05);
}

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

.category-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Hot Issues */
.hot-section {
  background: var(--bg-light);
}

.hot-list {
  max-width: 860px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 20px 30px;
}

.hot-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 10px;
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
  border-radius: var(--radius-md);
}

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

.hot-item:hover {
  background: var(--bg-body);
  padding-left: 20px;
}

.hot-rank {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  border-radius: 14px;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: var(--text-muted);
  transition: var(--transition);
}

.hot-item:nth-child(1) .hot-rank {
  background: linear-gradient(135deg, #f5c842, #e99b2b);
  color: #fff;
  box-shadow: 0 4px 12px rgba(233, 155, 43, 0.3);
}

.hot-item:nth-child(2) .hot-rank {
  background: linear-gradient(135deg, #b8c0d0, #8a93a8);
  color: #fff;
  box-shadow: 0 4px 12px rgba(138, 147, 168, 0.25);
}

.hot-item:nth-child(3) .hot-rank {
  background: linear-gradient(135deg, #d8a98a, #bf7a5a);
  color: #fff;
  box-shadow: 0 4px 12px rgba(191, 122, 90, 0.25);
}

.hot-item .hot-content {
  flex: 1;
}

.hot-item .hot-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
}

.hot-item .hot-arrow {
  color: var(--border);
  font-size: 16px;
  transition: var(--transition);
  flex-shrink: 0;
}

.hot-item:hover .hot-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

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

.faq-wrapper {
  max-width: 880px;
  margin: 0 auto;
}

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

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

.faq-item.active {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  background: #fff;
}

.faq-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  text-align: left;
  background: transparent;
}

.faq-toggle .faq-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  background: var(--accent);
  color: var(--primary);
  transform: rotate(180deg);
}

.faq-toggle .faq-q {
  flex: 1;
  font-size: 17px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.5;
}

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

.faq-item.active .faq-answer {
  max-height: 400px;
}

.faq-answer-inner {
  padding: 0 24px 22px 72px;
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.8;
  border-top: 1px dashed var(--border);
  padding-top: 16px;
  margin-top: 2px;
}

/* Resources */
.resources-section {
  background: var(--bg-light);
}

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

.resource-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.resource-card .card-media {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

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

.resource-card .card-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(26, 26, 46, 0.15) 100%);
}

.resource-card .card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 30px;
  backdrop-filter: blur(4px);
  box-shadow: var(--shadow-xs);
}

.resource-card .card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.resource-card .card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.45;
  margin-bottom: 10px;
}

.resource-card .card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}

.resource-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-strong);
  transition: var(--transition);
}

.resource-card .card-link:hover {
  gap: 12px;
  color: var(--accent);
}

/* CTA */
.cta-section {
  position: relative;
  padding: 0;
}

.cta-box {
  background: var(--primary);
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  padding: 64px 60px;
  text-align: center;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin: 80px 0;
}

.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(26, 26, 46, 0.92), rgba(26, 26, 46, 0.72));
  z-index: -1;
}

.cta-box h2 {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.cta-box p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 540px;
  margin: 0 auto 30px;
  line-height: 1.8;
}

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

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.65);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 46px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand i {
  color: var(--accent);
  font-size: 22px;
}

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

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  color: var(--primary);
  transform: translateY(-3px);
}

.footer-links h4,
.footer-contact h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 8px;
}

.footer-links h4::after,
.footer-contact h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.footer-links a,
.footer-contact a {
  display: block;
  font-size: 14px;
  padding: 5px 0;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-contact p {
  font-size: 14px;
  padding: 5px 0;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}

.footer-contact p i {
  color: var(--accent);
  margin-right: 8px;
  width: 18px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

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

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

/* Responsive */
@media (max-width: 1024px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .resources-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .main-nav {
    gap: 2px;
  }
  .nav-link {
    padding: 8px 12px;
    font-size: 14px;
  }
  .search-box input {
    width: 90px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
  .site-header {
    height: auto;
    padding: 12px 0;
  }
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    gap: 10px;
  }
  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-radius: var(--radius-md);
    padding: 12px;
    box-shadow: var(--shadow-md);
    gap: 4px;
  }
  .main-nav.open {
    display: flex;
  }
  .nav-toggle {
    display: flex;
  }
  .header-tools {
    gap: 8px;
  }
  .search-box {
    display: none;
  }
  .page-hero {
    padding: 80px 0 70px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .page-hero p {
    font-size: 15px;
  }
  .section-head h2 {
    font-size: 27px;
  }
  .section-head p {
    font-size: 15px;
  }
  .resources-grid {
    grid-template-columns: 1fr;
  }
  .resources-grid .resource-card .card-media {
    height: 180px;
  }
  .hot-list {
    padding: 12px 16px;
  }
  .hot-item {
    padding: 14px 8px;
    gap: 12px;
  }
  .hot-rank {
    width: 38px;
    height: 38px;
    font-size: 15px;
    border-radius: 10px;
  }
  .hot-item .hot-content h3 {
    font-size: 14px;
  }
  .faq-toggle {
    padding: 16px 18px;
  }
  .faq-toggle .faq-q {
    font-size: 15px;
  }
  .faq-answer-inner {
    padding: 14px 18px 18px 18px;
  }
  .cta-box {
    padding: 44px 24px;
    margin: 60px 0;
  }
  .cta-box h2 {
    font-size: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-about p {
    max-width: 100%;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .brand-text {
    font-size: 15px;
  }
  .btn-nav {
    padding: 8px 16px;
    font-size: 13px;
  }
  .btn-nav span {
    display: none;
  }
  .category-grid {
    grid-template-columns: 1fr;
  }
  .category-section .category-card {
    padding: 24px 20px;
  }
  .page-hero h1 {
    font-size: 28px;
  }
  .hero-buttons .btn {
    padding: 10px 22px;
    font-size: 14px;
  }
  .hot-list {
    padding: 8px 12px;
  }
  .hot-item {
    flex-wrap: wrap;
    gap: 8px;
  }
  .hot-rank {
    width: 34px;
    height: 34px;
    font-size: 14px;
  }
  .hot-item .hot-arrow {
    display: none;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .section-head .section-tag {
    font-size: 12px;
  }
  .faq-toggle .faq-icon {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }
  .footer-bottom p {
    font-size: 12px;
  }
}