/* roulang page: index */
:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #0e1420;
  --bg-card: #141c2c;
  --bg-elevated: #1a2435;
  --brand-primary: #d4a853;
  --brand-secondary: #e8b85c;
  --brand-dark: #a8812f;
  --accent: #3ba7a0;
  --text-primary: #f0f2f5;
  --text-secondary: #a0a8b8;
  --text-muted: #6b7888;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(212, 168, 83, 0.3);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
  --shadow-gold: 0 8px 30px rgba(212, 168, 83, 0.15);
  --transition: all 0.3s ease;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

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

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

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

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

ul, ol {
  list-style: none;
}

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

.container {
  width: min(1200px, 92%);
  margin-inline: auto;
}

.section {
  padding: 96px 0;
  position: relative;
}

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

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  background: rgba(212, 168, 83, 0.12);
  border: 1px solid rgba(212, 168, 83, 0.25);
  color: var(--brand-secondary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 36px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn i {
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-secondary), var(--brand-primary));
  color: #0b0f19;
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(212, 168, 83, 0.3);
  color: #0b0f19;
}

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

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--brand-primary);
  color: var(--brand-secondary);
  transform: translateY(-3px);
}

.btn-outline-gold {
  background: transparent;
  border-color: var(--brand-primary);
  color: var(--brand-secondary);
}

.btn-outline-gold:hover {
  background: rgba(212, 168, 83, 0.12);
  color: var(--brand-secondary);
  transform: translateY(-2px);
}

.btn-light {
  background: #fff;
  color: #0b0f19;
}

.btn-light:hover {
  background: var(--brand-secondary);
  color: #0b0f19;
  transform: translateY(-2px);
}

.btn:focus-visible {
  outline: 3px solid rgba(212, 168, 83, 0.5);
  outline-offset: 3px;
}

/* Header */
.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 24px 32px 0;
}

.nav-capsule {
  max-width: 1200px;
  margin-inline: auto;
  background: rgba(11, 15, 25, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  transition: var(--transition);
}

.nav-capsule:hover {
  border-color: rgba(212, 168, 83, 0.2);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand-secondary), var(--brand-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #0b0f19;
  box-shadow: 0 4px 12px rgba(212, 168, 83, 0.3);
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  display: block;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.nav-links a.active {
  color: var(--brand-secondary);
  background: rgba(212, 168, 83, 0.12);
}

.nav-links a:focus-visible {
  outline: 3px solid rgba(212, 168, 83, 0.5);
  outline-offset: 2px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  margin: 3px 0;
  transition: var(--transition);
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
}

.nav-toggle:focus-visible {
  outline: 3px solid rgba(212, 168, 83, 0.5);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-primary);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11, 15, 25, 0.97) 0%, rgba(11, 15, 25, 0.82) 45%, rgba(11, 15, 25, 0.45) 100%);
  z-index: 1;
}

.hero-overlay::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(transparent, var(--bg-primary));
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 140px;
  padding-bottom: 80px;
  max-width: 680px;
  margin-left: 4%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  background: rgba(212, 168, 83, 0.12);
  border: 1px solid rgba(212, 168, 83, 0.3);
  color: var(--brand-secondary);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 28px;
}

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

.hero-content h1 {
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 900;
  line-height: 1.15;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.hero-content h1 span {
  background: linear-gradient(135deg, var(--brand-secondary), var(--brand-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content .hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 44px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14.5px;
}

.hero-meta i {
  color: var(--brand-secondary);
  font-size: 15px;
}

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

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

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

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(212, 168, 83, 0.25);
  box-shadow: var(--shadow-lg);
}

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

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.18), rgba(212, 168, 83, 0.06));
  border: 1px solid rgba(212, 168, 83, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--brand-secondary);
  margin-bottom: 22px;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  transform: scale(1.05);
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.25), rgba(212, 168, 83, 0.1));
}

.service-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.service-card p {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* Stats */
.stats-panel {
  background: linear-gradient(135deg, var(--bg-elevated), var(--bg-card));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.stats-panel::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(212, 168, 83, 0.08), transparent 70%);
}

.stat-item {
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-num {
  font-size: clamp(36px, 4vw, 48px);
  font-weight: 900;
  color: var(--brand-secondary);
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

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

.cat-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: block;
  min-height: 380px;
}

.cat-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(212, 168, 83, 0.3);
}

.cat-card-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: var(--transition);
}

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

.cat-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 15, 25, 0.2) 0%, rgba(11, 15, 25, 0.92) 100%);
}

.cat-card-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px;
}

.cat-card-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: rgba(212, 168, 83, 0.2);
  border: 1px solid rgba(212, 168, 83, 0.3);
  color: var(--brand-secondary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 14px;
}

.cat-card-body h3 {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.cat-card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}

.cat-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand-secondary);
  font-size: 14px;
  font-weight: 600;
}

.cat-card-link i {
  transition: var(--transition);
}

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

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

.news-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.news-card::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(212, 168, 83, 0.25);
}

.news-card:hover::after {
  width: 100%;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.news-cat {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(59, 167, 160, 0.12);
  border: 1px solid rgba(59, 167, 160, 0.25);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}

.news-date {
  font-size: 13px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-date i {
  font-size: 12px;
}

.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 10px;
  transition: var(--transition);
}

.news-card:hover h3 {
  color: var(--brand-secondary);
}

.news-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-secondary);
  font-size: 14px;
  font-weight: 600;
}

.news-more i {
  transition: var(--transition);
}

.news-card:hover .news-more i {
  transform: translateX(4px);
}

.empty-tip {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  font-size: 15px;
  border: 1px dashed var(--border-strong);
}

/* Features */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.feature-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(212, 168, 83, 0.2);
}

.feature-img {
  min-height: 260px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.feature-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(11, 15, 25, 0.3));
}

.feature-body {
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature-body .feature-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: rgba(212, 168, 83, 0.1);
  border: 1px solid rgba(212, 168, 83, 0.2);
  color: var(--brand-secondary);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
  align-self: flex-start;
}

.feature-body h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.feature-body p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.feature-body ul {
  margin-top: 16px;
}

.feature-body ul li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.feature-body ul li i {
  color: var(--brand-secondary);
  font-size: 12px;
}

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

.step-item {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 24px 28px;
  transition: var(--transition);
}

.step-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(212, 168, 83, 0.2);
}

.step-num {
  font-size: 48px;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--brand-secondary), var(--brand-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  position: absolute;
  top: 20px;
  right: 20px;
}

.step-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(212, 168, 83, 0.12);
  border: 1px solid rgba(212, 168, 83, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--brand-secondary);
  margin-bottom: 20px;
}

.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

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

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

.faq-item:hover {
  border-color: rgba(212, 168, 83, 0.2);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 28px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  list-style: none;
  transition: var(--transition);
}

.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: 13px;
  color: var(--brand-secondary);
  transition: var(--transition);
  flex-shrink: 0;
}

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

.faq-item[open] summary {
  color: var(--brand-secondary);
}

.faq-item .faq-answer {
  padding: 0 28px 22px;
  color: var(--text-secondary);
  font-size: 14.5px;
  line-height: 1.75;
}

.faq-item .faq-answer a {
  color: var(--brand-secondary);
  border-bottom: 1px solid rgba(212, 168, 83, 0.3);
}

/* CTA */
.cta-section {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
  background: var(--bg-secondary);
}

.cta-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.2;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
}

.cta-content h2 {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 900;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

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

/* Footer */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

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

.footer-about {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 12px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.footer-contact li i {
  color: var(--brand-secondary);
  margin-top: 4px;
  font-size: 14px;
  width: 16px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom p a {
  color: var(--text-muted);
}

.footer-bottom p a:hover {
  color: var(--brand-secondary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--bg-elevated);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(212, 168, 83, 0.4);
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-up {
  animation: fadeUp 0.8s ease forwards;
}

/* Responsive */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-panel {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }
  .site-header {
    padding: 16px 16px 0;
  }
  .nav-capsule {
    padding: 8px 16px;
  }
  .brand {
    font-size: 16px;
  }
  .brand-icon {
    width: 34px;
    height: 34px;
    font-size: 14px;
  }
  .nav-links {
    position: fixed;
    top: 80px;
    left: 16px;
    right: 16px;
    background: rgba(11, 15, 25, 0.97);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    display: none;
    z-index: 200;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    padding: 14px 20px;
    text-align: center;
  }
  .nav-toggle {
    display: flex;
  }
  .hero-content {
    padding-top: 120px;
    margin-left: 4%;
  }
  .hero-content h1 {
    font-size: 38px;
  }
  .hero-desc {
    font-size: 16px !important;
  }
  .hero-meta {
    gap: 16px;
  }
  .hero-meta span {
    font-size: 13px;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .feature-card {
    grid-template-columns: 1fr;
  }
  .feature-img {
    min-height: 200px;
  }
  .cta-section {
    padding: 80px 0;
  }
}

@media (max-width: 520px) {
  .container {
    width: 92%;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .cat-grid {
    grid-template-columns: 1fr;
  }
  .stats-panel {
    grid-template-columns: 1fr 1fr;
    padding: 36px 20px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    width: 100%;
  }
  .hero-meta {
    flex-direction: column;
    gap: 10px;
  }
  .section-head h2 {
    font-size: 28px;
  }
  .faq-item summary {
    font-size: 14px;
    padding: 18px 20px;
  }
  .faq-item .faq-answer {
    padding: 0 20px 18px;
    font-size: 14px;
  }
  .footer-bottom p {
    font-size: 12px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #e6b04c;
  --primary-dark: #c8953a;
  --primary-light: #ffd97a;
  --secondary: #1e5eff;
  --secondary-dark: #1446c8;
  --bg-deep: #080c14;
  --bg-body: #0d1220;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-panel: #131a2a;
  --bg-hover: rgba(230, 176, 76, 0.08);
  --text-main: #e9edf5;
  --text-muted: #8a94a9;
  --text-weak: #5d6779;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(230, 176, 76, 0.25);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 24px 70px rgba(0, 0, 0, 0.45);
  --glow: 0 0 40px rgba(230, 176, 76, 0.12);
  --transition: 0.3s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", system-ui, sans-serif; background: var(--bg-body); color: var(--text-main); line-height: 1.75; -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit; }
input { font-family: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid rgba(230, 176, 76, 0.6); outline-offset: 2px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-alt { background: linear-gradient(180deg, var(--bg-deep) 0%, rgba(13, 18, 32, 0.4) 100%); }
.section-head { max-width: 700px; margin: 0 auto 56px; text-align: center; }
.section-tag { display: inline-flex; align-items: center; gap: 8px; padding: 6px 18px; border: 1px solid var(--border-strong); border-radius: 100px; font-size: 13px; font-weight: 600; letter-spacing: 1px; color: var(--primary); background: rgba(230, 176, 76, 0.06); margin-bottom: 18px; }
.section-tag i { font-size: 12px; }
.section-title { font-size: clamp(28px, 4vw, 40px); margin-bottom: 16px; letter-spacing: -0.5px; }
.section-sub { font-size: 16px; color: var(--text-muted); }
.highlight { color: var(--primary); }

/* Header */
.site-header { position: sticky; top: 14px; z-index: 100; padding: 0 20px; }
.nav-capsule { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; background: rgba(10, 15, 25, 0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 60px; padding: 10px 14px 10px 24px; box-shadow: 0 10px 44px rgba(0, 0, 0, 0.4); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 800; letter-spacing: 0.5px; white-space: nowrap; }
.brand-icon { width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #10141f; font-size: 17px; box-shadow: 0 4px 16px rgba(230, 176, 76, 0.35); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a { display: inline-block; padding: 9px 20px; border-radius: 100px; font-size: 15px; font-weight: 500; color: var(--text-muted); transition: all var(--transition); }
.nav-links a:hover { color: var(--text-main); background: rgba(255, 255, 255, 0.06); }
.nav-links a.active { color: #10141f; background: linear-gradient(135deg, var(--primary), var(--primary-light)); font-weight: 700; box-shadow: 0 4px 20px rgba(230, 176, 76, 0.3); }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--border); flex-direction: column; align-items: center; justify-content: center; gap: 5px; background: rgba(255, 255, 255, 0.05); }
.nav-toggle span { display: block; width: 16px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all 0.3s ease; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Page Hero */
.page-hero { position: relative; min-height: 540px; display: flex; align-items: center; background: linear-gradient(90deg, rgba(6, 9, 15, 0.94) 0%, rgba(6, 9, 15, 0.78) 50%, rgba(6, 9, 15, 0.55) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat; padding: 100px 0 80px; }
.page-hero-content { max-width: 820px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 7px 20px; border: 1px solid var(--border-strong); border-radius: 100px; font-size: 13px; font-weight: 600; letter-spacing: 1px; color: var(--primary); background: rgba(230, 176, 76, 0.08); margin-bottom: 24px; }
.page-hero h1 { font-size: clamp(34px, 5.5vw, 56px); letter-spacing: -1px; margin-bottom: 20px; }
.page-hero p { font-size: 17px; color: var(--text-muted); max-width: 620px; margin-bottom: 32px; }
.hero-buttons { display: flex; flex-wrap: wrap; gap: 16px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 34px; border-radius: 100px; font-size: 15px; font-weight: 600; transition: all var(--transition); border: 1px solid transparent; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #10141f; box-shadow: 0 6px 24px rgba(230, 176, 76, 0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 36px rgba(230, 176, 76, 0.45); }
.btn-ghost { border-color: rgba(255, 255, 255, 0.2); color: var(--text-main); background: rgba(255, 255, 255, 0.04); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.hero-stats { display: flex; flex-wrap: wrap; gap: 44px; margin-top: 52px; padding-top: 36px; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.hero-stat { display: flex; flex-direction: column; gap: 4px; }
.hero-stat .num { font-size: 30px; font-weight: 800; color: var(--primary); letter-spacing: 1px; }
.hero-stat .label { font-size: 13px; color: var(--text-muted); letter-spacing: 1px; }

/* Access Overview */
.overview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.access-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 40px 30px; position: relative; overflow: hidden; transition: all var(--transition); }
.access-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), transparent); opacity: 0; transition: opacity var(--transition); }
.access-card:hover { transform: translateY(-6px); background: rgba(255, 255, 255, 0.06); border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.access-card:hover::before { opacity: 1; }
.access-icon { width: 60px; height: 60px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 24px; background: linear-gradient(135deg, rgba(230, 176, 76, 0.16), rgba(230, 176, 76, 0.04)); color: var(--primary); margin-bottom: 24px; border: 1px solid var(--border-strong); }
.access-card h3 { font-size: 20px; margin-bottom: 12px; }
.access-card p { font-size: 14px; color: var(--text-muted); }
.access-card .extra { display: inline-block; margin-top: 20px; font-size: 13px; font-weight: 600; color: var(--primary); }

/* Steps Flow */
.steps-wrapper { background: linear-gradient(180deg, rgba(13, 18, 32, 0.6), rgba(8, 12, 20, 0.9)); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 56px 40px; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; }
.step-item { text-align: center; padding: 24px 12px; position: relative; }
.step-item::after { content: '\f061'; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; top: 50%; right: -22px; color: var(--primary); font-size: 14px; opacity: 0.7; transform: translateY(-50%); z-index: 2; }
.step-item:last-child::after { display: none; }
.step-num { width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; color: var(--primary); background: rgba(230, 176, 76, 0.1); border: 2px solid var(--border-strong); position: relative; }
.step-num::after { content: ''; position: absolute; inset: -8px; border-radius: 50%; border: 1px dashed rgba(230, 176, 76, 0.2); }
.step-item h3 { font-size: 18px; margin-bottom: 10px; }
.step-item p { font-size: 13px; color: var(--text-muted); max-width: 180px; margin: 0 auto; }

/* Security */
.security-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.security-visual { position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-lg); }
.security-visual img { width: 100%; height: 400px; object-fit: cover; }
.security-visual::after { content: ''; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(8, 12, 20, 0.7), transparent 60%); }
.security-visual .visual-tag { position: absolute; bottom: 24px; left: 24px; z-index: 2; display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px; border-radius: 100px; background: rgba(8, 12, 20, 0.75); border: 1px solid var(--border-strong); font-size: 13px; color: var(--primary); backdrop-filter: blur(8px); }
.security-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.security-item { padding: 24px; border-radius: var(--radius-md); background: var(--bg-card); border: 1px solid var(--border); transition: all var(--transition); }
.security-item:hover { background: var(--bg-hover); border-color: var(--border-strong); transform: translateY(-3px); }
.security-item .icon { font-size: 20px; color: var(--primary); margin-bottom: 12px; display: inline-block; }
.security-item h4 { font-size: 16px; margin-bottom: 8px; }
.security-item p { font-size: 13px; color: var(--text-muted); }

/* Devices */
.device-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.device-card { border-radius: var(--radius-md); overflow: hidden; background: var(--bg-card); border: 1px solid var(--border); transition: all var(--transition); }
.device-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.device-card .device-img { height: 180px; overflow: hidden; }
.device-card .device-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.device-card:hover .device-img img { transform: scale(1.06); }
.device-card .device-info { padding: 22px 20px; }
.device-card .device-info h3 { font-size: 17px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.device-card .device-info h3 i { color: var(--primary); font-size: 15px; }
.device-card .device-info p { font-size: 13px; color: var(--text-muted); }

/* Content List */
.content-wrapper { background: linear-gradient(180deg, rgba(8, 12, 20, 0.5), transparent); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 16px 32px; }
.content-item { display: flex; align-items: center; gap: 28px; padding: 26px 8px; border-bottom: 1px solid var(--border); transition: all var(--transition); }
.content-item:last-child { border-bottom: none; }
.content-item:hover { background: rgba(255, 255, 255, 0.02); padding-left: 16px; padding-right: 16px; border-radius: var(--radius-sm); }
.content-index { font-size: 28px; font-weight: 800; color: rgba(230, 176, 76, 0.35); min-width: 42px; font-style: italic; }
.content-info { flex: 1; }
.content-tag { display: inline-block; padding: 3px 12px; border-radius: 100px; font-size: 12px; font-weight: 600; background: rgba(230, 176, 76, 0.1); color: var(--primary); border: 1px solid rgba(230, 176, 76, 0.15); margin-bottom: 6px; }
.content-title { font-size: 17px; font-weight: 600; margin-bottom: 6px; transition: color var(--transition); }
.content-item:hover .content-title { color: var(--primary); }
.content-meta { display: flex; gap: 20px; font-size: 13px; color: var(--text-muted); }
.content-meta i { margin-right: 5px; font-size: 12px; }

/* FAQ */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: all var(--transition); }
.faq-item:hover { border-color: var(--border-strong); }
.faq-item.open { background: rgba(255, 255, 255, 0.05); border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 26px; font-size: 16px; font-weight: 600; text-align: left; }
.faq-question .faq-icon { width: 30px; height: 30px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; border-radius: 50%; background: rgba(230, 176, 76, 0.1); color: var(--primary); font-size: 13px; transition: transform var(--transition); }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; padding: 0 26px; transition: max-height 0.35s ease, padding 0.35s ease; color: var(--text-muted); font-size: 14px; line-height: 1.8; }
.faq-item.open .faq-answer { max-height: 300px; padding: 0 26px 22px; }

/* CTA */
.cta-section { padding: 60px 0 100px; }
.cta-box { position: relative; border-radius: var(--radius-lg); padding: 64px 48px; text-align: center; background: linear-gradient(120deg, rgba(230, 176, 76, 0.12), rgba(30, 94, 255, 0.06)), url('/assets/images/backpic/back-2.png') center/cover no-repeat; border: 1px solid var(--border-strong); overflow: hidden; }
.cta-box::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8, 12, 20, 0.7), rgba(8, 12, 20, 0.6)); }
.cta-box > * { position: relative; z-index: 2; }
.cta-box h2 { font-size: clamp(26px, 3.5vw, 36px); margin-bottom: 14px; }
.cta-box p { color: var(--text-muted); max-width: 560px; margin: 0 auto 30px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* Footer */
.site-footer { background: var(--bg-deep); border-top: 1px solid var(--border); padding-top: 70px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .brand { font-size: 20px; margin-bottom: 18px; }
.footer-about { font-size: 14px; color: var(--text-muted); max-width: 320px; margin-top: 16px; }
.footer-col h4 { font-size: 15px; margin-bottom: 20px; color: var(--text-main); letter-spacing: 0.5px; }
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col ul li a { font-size: 14px; color: var(--text-muted); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--primary); }
.footer-contact li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-muted); }
.footer-contact li i { color: var(--primary); font-size: 13px; width: 16px; }
.footer-bottom { border-top: 1px solid var(--border); padding: 24px 0; }
.footer-bottom p { text-align: center; font-size: 13px; color: var(--text-weak); }

/* Responsive */
@media (max-width: 1024px) {
  .overview-grid { grid-template-columns: repeat(3, 1fr); }
  .device-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 20px; }
  .step-item::after { display: none; }
  .security-wrap { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .nav-capsule { padding: 8px 12px 8px 16px; }
  .nav-links { position: fixed; top: 76px; left: 20px; right: 20px; background: rgba(10, 15, 25, 0.96); backdrop-filter: blur(24px); border: 1px solid var(--border); border-radius: 20px; flex-direction: column; align-items: stretch; gap: 4px; padding: 16px; transform: translateY(-20px); opacity: 0; visibility: hidden; transition: all 0.35s ease; box-shadow: var(--shadow-lg); }
  .nav-links.show { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-links a { display: block; text-align: center; padding: 13px 20px; }
  .nav-toggle { display: inline-flex; }
  .overview-grid { grid-template-columns: 1fr; }
  .steps-wrapper { padding: 40px 20px; }
  .device-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .content-wrapper { padding: 8px 16px; }
  .content-item { flex-direction: column; align-items: flex-start; gap: 10px; }
  .cta-box { padding: 48px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .page-hero { padding: 70px 0 50px; }
  .nav-capsule { padding: 8px 10px 8px 14px; }
  .brand { font-size: 15px; }
  .brand-icon { width: 33px; height: 33px; font-size: 14px; }
  .section-title { font-size: 26px; }
  .security-grid { grid-template-columns: 1fr; }
  .device-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .hero-buttons .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* roulang page: article */
:root {
  --primary: #00d4ff;
  --primary-2: #0088ff;
  --accent: #ffc24b;
  --bg-deep: #070b14;
  --bg-body: #0b111e;
  --bg-section: #0f172a;
  --bg-card: rgba(255, 255, 255, 0.035);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --border-light: rgba(255, 255, 255, 0.14);
  --text-main: #eaf0fc;
  --text-muted: #93a0b8;
  --text-weak: #6b7a92;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s ease;
  --container: 1200px;
  --gap: 28px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 15px;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 18px 24px;
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.nav-capsule {
  pointer-events: auto;
  max-width: 1180px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 16, 30, 0.82);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border: 1px solid var(--border-light);
  border-radius: 60px;
  padding: 10px 18px 10px 20px;
  box-shadow: var(--shadow-md);
  position: relative;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.3px;
  color: var(--text-main);
  white-space: nowrap;
}
.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  font-size: 15px;
  box-shadow: 0 4px 14px rgba(0, 212, 255, 0.35);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 8px 16px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
}
.nav-links a:hover {
  color: var(--primary);
  background: rgba(0, 212, 255, 0.08);
}
.nav-links a.active {
  color: #07121c;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 4px 18px rgba(0, 212, 255, 0.3);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-light);
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.article-hero {
  position: relative;
  padding: 176px 0 72px;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.72) 0%, rgba(11, 17, 30, 0.92) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
}
.article-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(180deg, transparent, var(--bg-body));
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  top: 60px;
  right: -180px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-divider { color: var(--text-weak); }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 30px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.28);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.3;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 22px;
  max-width: 860px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  color: var(--text-muted);
  font-size: 14px;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta i { color: var(--primary); }

.article-main {
  padding: 60px 0 40px;
  background: var(--bg-body);
}
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
  align-items: start;
}
.article-main-col { min-width: 0; }
.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}
.content-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0.6;
}
.article-summary {
  padding: 18px 22px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.18);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 28px;
}
.article-summary strong { color: var(--primary); }

.article-content { color: var(--text-main); font-size: 16px; }
.article-content p { margin-bottom: 1.5em; line-height: 1.9; }
.article-content h2,
.article-content h3,
.article-content h4 {
  margin: 1.6em 0 0.8em;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
}
.article-content h2 { font-size: 24px; padding-left: 16px; border-left: 4px solid var(--primary); }
.article-content h3 { font-size: 20px; }
.article-content h4 { font-size: 17px; }
.article-content ul,
.article-content ol { margin: 1em 0 1.5em; padding-left: 24px; }
.article-content ul li { list-style: disc; margin-bottom: 0.5em; }
.article-content ol li { list-style: decimal; margin-bottom: 0.5em; }
.article-content li { line-height: 1.8; }
.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin: 24px 0;
}
.article-content blockquote {
  background: rgba(255, 194, 75, 0.07);
  border-left: 4px solid var(--accent);
  padding: 18px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.4em 0;
  color: var(--text-muted);
  font-style: normal;
}
.article-content a { color: var(--primary); border-bottom: 1px solid transparent; }
.article-content a:hover { border-bottom-color: var(--primary); }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 14px;
}
.article-content th {
  background: rgba(0, 212, 255, 0.08);
  color: var(--text-main);
  padding: 12px 16px;
  text-align: left;
  border: 1px solid var(--border);
}
.article-content td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 30px;
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition);
}
.tag-item:hover {
  color: var(--primary);
  border-color: rgba(0, 212, 255, 0.35);
  background: rgba(0, 212, 255, 0.06);
}

.share-box {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.share-box span { color: var(--text-muted); font-size: 14px; margin-right: 4px; }
.share-box a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 14px;
  transition: var(--transition);
}
.share-box a:hover {
  color: var(--primary);
  border-color: rgba(0, 212, 255, 0.35);
  transform: translateY(-2px);
}

.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.widget:hover { border-color: var(--border-light); background: var(--bg-card-hover); }
.widget::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 70px;
  height: 70px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}
.widget-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
}
.widget-title i { color: var(--primary); }
.widget-safety li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  color: var(--text-muted);
  font-size: 14px;
  border-bottom: 1px dashed var(--border);
}
.widget-safety li:last-child { border-bottom: none; }
.widget-safety i { color: var(--primary); font-size: 14px; }
.widget-list li { border-bottom: 1px solid var(--border); }
.widget-list li:last-child { border-bottom: none; }
.widget-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  color: var(--text-muted);
  font-size: 14px;
}
.widget-list a i { font-size: 10px; color: var(--text-weak); transition: var(--transition); }
.widget-list a:hover { color: var(--primary); padding-left: 6px; }
.widget-list a:hover i { color: var(--primary); }

.widget-cover {
  padding: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.widget-cover img { width: 100%; height: 190px; object-fit: cover; }
.widget-cover-text {
  padding: 18px 20px;
  background: var(--bg-card);
}
.widget-cover-text span {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #07121c;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 10px;
}
.widget-cover-text p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

.not-found {
  text-align: center;
  padding: 60px 20px;
}
.not-found i {
  font-size: 52px;
  color: var(--primary);
  opacity: 0.5;
  display: block;
  margin-bottom: 20px;
}
.not-found h2 { font-size: 28px; color: var(--text-main); margin-bottom: 12px; }
.not-found p { color: var(--text-muted); margin-bottom: 28px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #07121c;
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0, 212, 255, 0.4);
}
.btn-outline {
  border-color: var(--border-light);
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0, 212, 255, 0.06);
  transform: translateY(-2px);
}

.article-cta {
  padding: 70px 0;
  position: relative;
  background: linear-gradient(180deg, var(--bg-body) 0%, var(--bg-section) 100%);
}
.cta-box {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 46px 50px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(0, 212, 255, 0.08) 0%, transparent 40%),
    linear-gradient(180deg, rgba(15, 23, 42, 0.94), rgba(7, 11, 20, 0.96)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border: 1px solid var(--border-light);
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.cta-info { position: relative; z-index: 2; max-width: 620px; }
.cta-info h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.4;
}
.cta-info p { color: var(--text-muted); margin-bottom: 26px; font-size: 15px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.cta-panel {
  position: relative;
  z-index: 2;
  min-width: 180px;
  text-align: center;
  padding: 30px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
}
.stat-num {
  font-size: 40px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}
.stat-label { color: var(--text-muted); font-size: 13px; margin-top: 8px; }

.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding-top: 70px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 50px;
}
.footer-brand .brand { margin-bottom: 16px; }
.footer-about { color: var(--text-muted); font-size: 14px; line-height: 1.8; max-width: 320px; }
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--text-muted); font-size: 14px; }
.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 12px !important;
}
.footer-contact i { color: var(--primary); width: 16px; text-align: center; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p { color: var(--text-weak); font-size: 13px; }

@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; gap: 32px; }
  .article-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .widget-cover { grid-column: span 2; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .site-header { padding: 14px 16px; }
  .nav-capsule { padding: 8px 14px 8px 16px; }
  .nav-links {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    background: rgba(10, 16, 30, 0.97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    flex-direction: column;
    padding: 14px;
    display: none;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; text-align: center; padding: 12px 16px; }
  .nav-toggle { display: flex; }
  .nav-toggle.open { border-color: var(--primary); }
  .article-hero { padding: 150px 0 56px; }
  .hero-title { font-size: 28px; }
  .hero-meta { gap: 12px; font-size: 13px; }
  .content-card { padding: 24px 20px; }
  .cta-box { flex-direction: column; text-align: center; padding: 36px 24px; }
  .cta-actions { justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; text-align: center; }
  .footer-about { margin: 0 auto; }
  .footer-contact li { justify-content: center; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand { font-size: 15px; }
  .brand-icon { width: 30px; height: 30px; font-size: 13px; }
  .article-hero { padding: 130px 0 48px; }
  .hero-title { font-size: 23px; }
  .breadcrumb { font-size: 12px; }
  .article-sidebar { grid-template-columns: 1fr; }
  .widget-cover { grid-column: span 1; }
  .content-card { padding: 20px 16px; border-radius: var(--radius-md); }
  .article-content { font-size: 15px; }
  .article-content h2 { font-size: 20px; }
  .cta-actions .btn { width: 100%; justify-content: center; }
  .cta-panel { min-width: 140px; }
  .stat-num { font-size: 32px; }
  .footer-bottom p { font-size: 12px; }
}

/* roulang page: category2 */
:root {
            --primary: #00d4ff;
            --primary-dark: #00a0cc;
            --secondary: #ffb800;
            --secondary-dark: #e09e00;
            --bg: #0a0e17;
            --bg-alt: #0d1424;
            --card: #121a2c;
            --card-hover: #18233a;
            --text: #e8edf5;
            --text-dim: #93a0b4;
            --border: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(0, 212, 255, 0.25);
            --radius-sm: 10px;
            --radius: 18px;
            --radius-lg: 26px;
            --shadow-sm: 0 6px 24px rgba(0, 0, 0, 0.35);
            --shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --section-space: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        input,
        textarea {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #0a0e17;
            box-shadow: 0 8px 30px rgba(0, 212, 255, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 212, 255, 0.35);
        }

        .btn-outline {
            border-color: rgba(255, 255, 255, 0.2);
            color: var(--text);
            background: rgba(255, 255, 255, 0.03);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
            transform: translateY(-3px);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(0, 212, 255, 0.5);
            outline-offset: 3px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 20px;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 0 24px;
        }

        .nav-capsule {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(10, 14, 23, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 60px;
            padding: 12px 24px 12px 20px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
            transition: var(--transition);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 50%;
            color: #0a0e17;
            font-size: 16px;
            flex-shrink: 0;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            padding: 9px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-dim);
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-links a.active {
            color: #0a0e17;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            font-weight: 700;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            transition: var(--transition);
        }

        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 200px 0 90px;
            background: linear-gradient(180deg, rgba(10, 14, 23, 0.75), rgba(10, 14, 23, 0.92)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(180deg, transparent, var(--bg));
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.25);
            border-radius: 30px;
            text-transform: uppercase;
        }

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

        .hero-title {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            margin-top: 22px;
            letter-spacing: -0.5px;
        }

        .hero-title span {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-dim);
            margin-top: 20px;
            line-height: 1.8;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            margin-top: 36px;
            flex-wrap: wrap;
        }

        .hero-meta {
            display: flex;
            gap: 30px;
            margin-top: 50px;
            flex-wrap: wrap;
        }

        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-dim);
        }

        .hero-meta-item i {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--primary);
            font-size: 13px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: var(--section-space) 0;
        }

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

        .section-head {
            max-width: 760px;
            margin-bottom: 50px;
        }

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

        .section-tag {
            display: inline-block;
            padding: 6px 18px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.2);
            border-radius: 30px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            margin-top: 14px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-dim);
            margin-top: 14px;
            line-height: 1.8;
        }

        .section-title-gradient {
            background: linear-gradient(90deg, var(--text), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ===== Category Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            position: relative;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .feature-card:hover {
            border-color: var(--border-strong);
            transform: translateY(-8px);
            box-shadow: var(--shadow);
            background: var(--card-hover);
        }

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

        .feature-card-img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 22px;
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-size: 18px;
            background: rgba(0, 212, 255, 0.1);
            color: var(--primary);
            margin-bottom: 16px;
        }

        .feature-card:nth-child(2) .feature-icon {
            background: rgba(255, 184, 0, 0.1);
            color: var(--secondary);
        }
        .feature-card:nth-child(3) .feature-icon {
            background: rgba(0, 212, 255, 0.08);
            color: var(--primary);
        }
        .feature-card:nth-child(4) .feature-icon {
            background: rgba(255, 184, 0, 0.08);
            color: var(--secondary);
        }

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

        .feature-card p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            flex-grow: 1;
        }

        .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 18px;
        }

        .feature-tag {
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 500;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-dim);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .feature-tag.hot {
            background: rgba(255, 184, 0, 0.1);
            border-color: rgba(255, 184, 0, 0.2);
            color: var(--secondary);
        }

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

        .compare-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            position: relative;
            transition: var(--transition);
        }

        .compare-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: var(--border-strong);
        }

        .compare-card-head {
            text-align: center;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 24px;
        }

        .compare-icon {
            width: 54px;
            height: 54px;
            margin: 0 auto 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            font-size: 22px;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(0, 212, 255, 0.05));
            color: var(--primary);
        }

        .compare-card:nth-child(2) .compare-icon {
            background: linear-gradient(135deg, rgba(255, 184, 0, 0.15), rgba(255, 184, 0, 0.05));
            color: var(--secondary);
        }

        .compare-card:nth-child(3) .compare-icon {
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(255, 184, 0, 0.08));
            color: var(--primary);
        }

        .compare-card-head h3 {
            font-size: 20px;
            font-weight: 700;
        }

        .compare-card-head .level {
            font-size: 13px;
            color: var(--text-dim);
            margin-top: 4px;
        }

        .compare-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .compare-item {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .compare-label-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
        }

        .compare-label {
            color: var(--text-dim);
        }

        .compare-value {
            font-weight: 600;
            color: var(--text);
            font-size: 13px;
        }

        .compare-bar {
            height: 4px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 4px;
            overflow: hidden;
        }

        .compare-bar-inner {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transition: width 0.6s ease;
        }

        .compare-card-feature {
            margin-top: 22px;
            padding: 16px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.03);
            font-size: 13px;
            color: var(--text-dim);
            line-height: 1.6;
            border: 1px solid rgba(255, 255, 255, 0.04);
        }

        /* ===== Path Steps ===== */
        .path-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .path-step {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }

        .path-step:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.25);
            margin-bottom: 16px;
        }

        .path-step h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .path-step p {
            font-size: 13px;
            color: var(--text-dim);
            line-height: 1.6;
        }

        .path-arrow {
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 5;
            color: var(--primary);
            font-size: 14px;
            opacity: 0.6;
        }

        .path-step:last-child .path-arrow {
            display: none;
        }

        /* ===== Data Metrics ===== */
        .metrics-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-card {
            background: linear-gradient(145deg, rgba(0, 212, 255, 0.06), transparent);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
        }

        .metric-card:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-glow);
        }

        .metric-number {
            font-size: 42px;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .metric-label {
            font-size: 14px;
            color: var(--text-dim);
            margin-top: 8px;
        }

        .metric-icon {
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

        .strategy-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
        }

        .strategy-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: var(--border-strong);
        }

        .strategy-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: var(--transition);
        }

        .strategy-card:hover .strategy-img {
            transform: scale(1.03);
        }

        .strategy-body {
            padding: 24px;
        }

        .strategy-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .strategy-body p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
        }

        .strategy-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
        }

        .strategy-link:hover {
            gap: 10px;
            color: var(--secondary);
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

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

        .faq-item summary {
            padding: 22px 26px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            list-style: none;
            transition: var(--transition);
        }

        .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: var(--transition);
            flex-shrink: 0;
        }

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

        .faq-item[open] summary {
            border-bottom: 1px solid var(--border);
        }

        .faq-answer {
            padding: 20px 26px;
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(255, 184, 0, 0.06)), url('/assets/images/backpic/back-3.png') center / cover no-repeat;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .cta-inner {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
        }

        .cta-desc {
            font-size: 15px;
            color: var(--text-dim);
            margin-top: 14px;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-top: 30px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-alt);
            border-top: 1px solid var(--border);
            padding-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand .brand {
            font-size: 20px;
        }

        .footer-about {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.8;
            margin-top: 16px;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-dim);
            transition: var(--transition);
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-dim);
            margin-bottom: 10px;
        }

        .footer-contact li i {
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: var(--primary);
            font-size: 12px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-dim);
            text-align: center;
        }

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

            .path-wrap {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 32px;
            }

            .path-arrow {
                display: none;
            }

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

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

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }

            .site-header {
                top: 12px;
                padding: 0 16px;
            }

            .nav-capsule {
                padding: 10px 16px;
            }

            .nav-links {
                position: fixed;
                top: 80px;
                left: 16px;
                right: 16px;
                background: rgba(10, 14, 23, 0.97);
                backdrop-filter: blur(20px);
                border: 1px solid var(--border);
                border-radius: 20px;
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 6px;
                box-shadow: var(--shadow);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-10px);
                transition: var(--transition);
            }

            .nav-links.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }

            .nav-links a {
                padding: 12px 18px;
                text-align: center;
            }

            .nav-toggle {
                display: flex;
            }

            .hero-title {
                font-size: 34px;
            }

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

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

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

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

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

            .section {
                padding: 60px 0;
            }

            .page-hero {
                padding: 150px 0 60px;
            }
        }

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

            .metrics-wrap {
                grid-template-columns: 1fr;
            }

            .path-wrap {
                grid-template-columns: 1fr;
            }

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

            .hero-actions .btn {
                width: 100%;
            }

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

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

            .hero-meta {
                gap: 16px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #f59e0b;
  --primary-dark: #d97706;
  --primary-light: #fbbf24;
  --accent: #06b6d4;
  --dark: #0b1020;
  --dark-2: #111827;
  --dark-3: #1e293b;
  --bg: #f4f6fb;
  --bg-soft: #f8fafc;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --white: #ffffff;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, .05);
  --shadow: 0 8px 30px rgba(15, 23, 42, .08);
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, .14);
  --transition: .25s cubic-bezier(.4, 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, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; background: none; border: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 800; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }

.section-head { max-width: 680px; margin: 0 auto 56px; text-align: center; }
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(245, 158, 11, .12);
  color: var(--primary-dark);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .5px;
}
.section-head h2 { font-size: 32px; margin: 16px 0 12px; letter-spacing: .5px; }
.section-head p { color: var(--muted); font-size: 15px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: all var(--transition);
  line-height: 1.4;
}
.btn:focus-visible {
  outline: 3px solid rgba(245, 158, 11, .4);
  outline-offset: 2px;
}
.btn-line {
  border-color: var(--border);
  color: var(--text);
  background: transparent;
  align-self: flex-start;
}
.btn-line:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
  background: rgba(245, 158, 11, .08);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.btn-gold {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 8px 24px rgba(245, 158, 11, .3);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(245, 158, 11, .4);
}
.btn-ghost {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .25);
  color: #fff;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, .18);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, .5);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 24px;
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.nav-capsule {
  max-width: 1200px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: rgba(11, 16, 32, .78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 999px;
  padding: 10px 22px 10px 14px;
  pointer-events: auto;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .35);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .5px;
  white-space: nowrap;
}
.brand-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), #ef4444);
  border-radius: 12px;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 4px 14px rgba(245, 158, 11, .35);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border-radius: 999px;
  color: rgba(255, 255, 255, .75);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: all var(--transition);
}
.nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .08);
}
.nav-links a.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #0b1020;
  font-weight: 800;
  box-shadow: 0 6px 20px rgba(245, 158, 11, .3);
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .06);
  transition: background var(--transition);
}
.nav-toggle:hover { background: rgba(255, 255, 255, .1); }
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all .3s ease;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.hero-inner {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 190px 0 90px;
  background: linear-gradient(rgba(7, 10, 20, .78), rgba(7, 10, 20, .85)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  overflow: hidden;
}
.hero-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(245, 158, 11, .22), transparent 62%);
  pointer-events: none;
}
.hero-inner::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, #000 25%, transparent 78%);
  mask-image: radial-gradient(ellipse at 50% 50%, #000 25%, transparent 78%);
  pointer-events: none;
}
.hero-inner .container { position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 999px;
  background: rgba(245, 158, 11, .12);
  border: 1px solid rgba(245, 158, 11, .35);
  color: var(--primary-light);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero-inner h1 {
  font-size: 50px;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 18px;
  text-shadow: 0 4px 30px rgba(0, 0, 0, .4);
}
.hero-lead {
  max-width: 680px;
  margin: 0 auto;
  color: rgba(255, 255, 255, .78);
  font-size: 17px;
  line-height: 1.9;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 880px;
  margin: 52px auto 0;
}
.stat-card {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius);
  padding: 22px 16px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition);
}
.stat-card:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(245, 158, 11, .45);
  transform: translateY(-5px);
}
.stat-num {
  display: block;
  font-size: 30px;
  font-weight: 900;
  color: var(--primary-light);
  letter-spacing: .5px;
}
.stat-label {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, .65);
  margin-top: 4px;
}

.service-matrix { background: var(--bg); }
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.matrix-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.matrix-card::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(245, 158, 11, .15), transparent 70%);
  border-radius: 50%;
  transition: transform var(--transition);
}
.matrix-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245, 158, 11, .4);
}
.matrix-card:hover::before { transform: scale(1.2); }
.matrix-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(245, 158, 11, .15), rgba(239, 68, 68, .12));
  color: var(--primary-dark);
  font-size: 26px;
  margin-bottom: 20px;
  transition: all var(--transition);
}
.matrix-card:hover .matrix-icon {
  background: linear-gradient(135deg, var(--primary), #ef4444);
  color: #fff;
  box-shadow: 0 8px 22px rgba(245, 158, 11, .3);
}
.matrix-card h3 { font-size: 19px; margin-bottom: 10px; }
.matrix-card p { color: var(--muted); font-size: 14px; line-height: 1.75; }
.matrix-card ul { margin-top: 18px; display: grid; gap: 8px; }
.matrix-card ul li { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text); }
.matrix-card ul li i { color: var(--primary); font-size: 13px; }

.process-section {
  padding: 96px 0;
  background: linear-gradient(rgba(8, 12, 24, .88), rgba(8, 12, 24, .93)), url('/assets/images/backpic/back-3.png') center / cover no-repeat;
  color: #fff;
}
.process-section .section-head h2 { color: #fff; }
.process-section .section-head p { color: rgba(255, 255, 255, .62); }
.process-section .section-tag {
  background: rgba(245, 158, 11, .15);
  color: var(--primary-light);
  border: 1px solid rgba(245, 158, 11, .3);
}
.process-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: 12px;
  max-width: 1040px;
  margin: 0 auto;
  align-items: start;
}
.process-step {
  position: relative;
  text-align: center;
  padding: 38px 20px 26px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .09);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all var(--transition);
}
.process-step:hover {
  background: rgba(255, 255, 255, .09);
  border-color: rgba(245, 158, 11, .4);
  transform: translateY(-4px);
}
.step-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #0b1020;
  font-size: 12px;
  font-weight: 900;
  padding: 3px 14px;
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(245, 158, 11, .4);
}
.step-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, rgba(245, 158, 11, .9), rgba(239, 68, 68, .85));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: #fff;
  box-shadow: 0 12px 30px rgba(245, 158, 11, .28);
}
.process-step h3 { font-size: 18px; margin-bottom: 8px; color: #fff; }
.process-step p { font-size: 13px; color: rgba(255, 255, 255, .6); line-height: 1.7; }
.process-arrow {
  padding-top: 70px;
  color: var(--primary-light);
  font-size: 22px;
  opacity: .7;
}

.detail-section { background: var(--bg-soft); }
.detail-list { display: grid; gap: 44px; }
.detail-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.detail-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.detail-item.reverse .detail-img { order: 2; }
.detail-item.reverse .detail-content { order: 1; }
.detail-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
}
.detail-content {
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.detail-badge {
  display: inline-flex;
  align-self: flex-start;
  padding: 6px 16px;
  background: linear-gradient(135deg, var(--primary), #ef4444);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  border-radius: 999px;
  letter-spacing: .5px;
  box-shadow: 0 6px 16px rgba(245, 158, 11, .25);
}
.detail-content h3 { font-size: 26px; margin: 16px 0 12px; }
.detail-content p { color: var(--muted); font-size: 15px; margin-bottom: 18px; }
.detail-content ul { display: grid; gap: 9px; margin-bottom: 24px; }
.detail-content ul li { position: relative; padding-left: 24px; font-size: 14px; color: var(--text); }
.detail-content ul li::before {
  content: '\f058';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 1px;
  color: var(--primary);
  font-size: 14px;
}

.faq-section { background: var(--bg); }
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item.open { box-shadow: var(--shadow); border-color: rgba(245, 158, 11, .4); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 26px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  text-align: left;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary-dark); }
.faq-question i { color: var(--primary); transition: transform var(--transition); font-size: 14px; flex-shrink: 0; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-answer p { padding: 0 26px 24px; color: var(--muted); font-size: 15px; line-height: 1.8; }
.faq-item.open .faq-answer { max-height: 360px; }

.cta-section { padding: 80px 0 100px; background: var(--bg-soft); }
.cta-card {
  background: linear-gradient(135deg, #0b1020, #1e1b4b);
  border-radius: var(--radius-lg);
  padding: 56px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-card::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -8%;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(245, 158, 11, .28), transparent 65%);
  pointer-events: none;
}
.cta-card::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -6%;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(6, 182, 212, .18), transparent 65%);
  pointer-events: none;
}
.cta-text { position: relative; z-index: 1; }
.cta-text h2 { color: #fff; font-size: 30px; margin-bottom: 10px; }
.cta-text p { color: rgba(255, 255, 255, .7); font-size: 15px; }
.cta-actions { display: flex; gap: 14px; flex-shrink: 0; position: relative; z-index: 1; }

.site-footer {
  background: #070b14;
  color: rgba(255, 255, 255, .72);
  padding-top: 72px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 48px;
}
.footer-brand .brand { color: #fff; font-size: 20px; }
.footer-about {
  font-size: 14px;
  padding-right: 28px;
  margin-top: 18px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .55);
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.footer-col ul { display: grid; gap: 11px; }
.footer-col a { color: rgba(255, 255, 255, .6); font-size: 14px; transition: color .2s, padding-left .2s; }
.footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, .6);
  margin-bottom: 4px;
}
.footer-contact i { color: var(--primary); width: 18px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, .42);
}
.footer-bottom a { color: rgba(255, 255, 255, .55); }
.footer-bottom a:hover { color: var(--primary-light); }

@media (max-width: 1024px) {
  .matrix-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .detail-content { padding: 36px; }
  .cta-card { padding: 44px 36px; flex-direction: column; text-align: center; }
  .cta-actions { justify-content: center; }
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 84px;
    left: 16px;
    right: 16px;
    background: rgba(11, 16, 32, .98);
    border: 1px solid rgba(255, 255, 255, .08);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-radius: 20px;
    padding: 14px;
    flex-direction: column;
    gap: 4px;
    display: none;
    box-shadow: 0 24px 60px rgba(0, 0, 0, .5);
    max-height: calc(100vh - 100px);
    overflow-y: auto;
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: flex; width: 100%; padding: 12px 16px; border-radius: 12px; font-size: 15px; }
  .nav-capsule { padding: 10px 14px 10px 12px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .process-arrow { display: none; }
  .detail-item { grid-template-columns: 1fr; }
  .detail-item.reverse .detail-img { order: 0; }
  .detail-item.reverse .detail-content { order: 1; }
  .detail-img img { min-height: 240px; max-height: 340px; }
  .hero-inner { min-height: 560px; padding: 170px 0 70px; }
  .hero-inner h1 { font-size: 40px; }
  .stats-grid { gap: 12px; }
}

@media (max-width: 640px) {
  .section { padding: 68px 0; }
  .section-head h2 { font-size: 25px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); margin-top: 40px; }
  .hero-inner h1 { font-size: 32px; }
  .hero-lead { font-size: 15px; }
  .matrix-grid { grid-template-columns: 1fr; }
  .matrix-card { padding: 28px 22px; }
  .process-grid { grid-template-columns: 1fr; }
  .process-step { padding: 34px 18px 22px; }
  .detail-content { padding: 28px 22px; }
  .detail-content h3 { font-size: 22px; }
  .detail-badge { align-self: flex-start; }
  .faq-question { font-size: 15px; padding: 18px 20px; }
  .faq-answer p { padding: 0 20px 20px; }
  .cta-card { padding: 36px 24px; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { justify-content: center; width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-about { padding-right: 0; }
  .cta-text h2 { font-size: 24px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .brand { font-size: 16px; }
  .brand-icon { width: 34px; height: 34px; font-size: 14px; }
  .nav-capsule { border-radius: 20px; }
  .stat-num { font-size: 24px; }
  .stat-label { font-size: 12px; }
  .hero-inner h1 { font-size: 28px; }
  .hero-eyebrow { font-size: 11px; }
}