/* roulang page: index */
:root {
  --bg: #F5F8FC;
  --card-bg: #FFFFFF;
  --primary: #3B6EA5;
  --primary-dark: #2C5688;
  --accent: #128F82;
  --heading: #1E2A38;
  --text: #3E4E5D;
  --muted: #7A8B9C;
  --border: #E2E9F1;
  --alt-bg: #EDF3F9;
  --soft-bg: #FBFCFE;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow: 0 10px 30px -12px rgba(30, 50, 80, 0.14);
  --shadow-hover: 0 20px 45px -16px rgba(30, 50, 80, 0.22);
  --accent-shadow: 0 12px 28px -12px rgba(18, 143, 130, 0.4);
  --font-stack: system-ui, -apple-system, "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;
}
body {
  font-family: var(--font-stack);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
  border-radius: 12px;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .25s ease;
}
a:hover {
  color: var(--primary-dark);
}
button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  transition: background .25s ease, color .25s ease, box-shadow .25s ease, transform .2s ease;
}
input, textarea, select {
  font-family: inherit;
}
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}
.section {
  padding: 96px 0;
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-head h2 {
  font-size: 28px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--heading);
  margin-bottom: 12px;
}
.section-head p {
  font-size: 15px;
  color: var(--muted);
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 30px;
  border-radius: var(--radius-md);
  box-shadow: var(--accent-shadow);
  transition: background .25s, transform .2s, box-shadow .25s, color .25s;
}
.btn-primary:hover {
  background: #0f7a6e;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 16px 32px -12px rgba(18, 143, 130, 0.5);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 6px 20px -8px rgba(18, 143, 130, 0.4);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
  padding: 13px 30px;
  border: 1px solid #C9D6E2;
  border-radius: var(--radius-md);
  transition: background .25s, border-color .25s, color .25s, transform .2s;
}
.btn-secondary:hover {
  background: #F0F5FA;
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}
.btn-secondary:active {
  transform: translateY(1px);
}
.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  transition: background .25s, color .25s;
}
.btn-text:hover {
  background: rgba(59, 110, 165, 0.08);
  color: var(--primary-dark);
}
.btn-text:focus-visible, .btn-primary:focus-visible, .btn-secondary:focus-visible {
  outline: 3px solid rgba(59, 110, 165, 0.25);
  outline-offset: 2px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(30, 50, 80, 0.04);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  height: 72px;
}
.logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 22px;
  font-weight: 700;
  color: var(--heading);
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color .25s;
}
.logo:hover {
  color: var(--primary);
}
.logo-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: inline-block;
  position: relative;
  flex-shrink: 0;
}
.logo-icon::after {
  content: '';
  position: absolute;
  inset: 7px;
  border-radius: 4px;
  background: #fff;
  opacity: 0.9;
}
.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  position: relative;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-md);
  transition: color .25s, background .25s;
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(59, 110, 165, 0.06);
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: -2px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}
.nav-toggle {
  display: none;
  background: transparent;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  color: var(--heading);
  font-size: 20px;
}
.nav-toggle:hover {
  background: rgba(59, 110, 165, 0.08);
}
.nav-toggle-bar {
  width: 20px;
  height: 2px;
  background: var(--heading);
  border-radius: 2px;
  position: relative;
  transition: background .2s;
}
.nav-toggle-bar::before, .nav-toggle-bar::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--heading);
  border-radius: 2px;
  transition: transform .25s, background .25s;
}
.nav-toggle-bar::before { top: -6px; }
.nav-toggle-bar::after { top: 6px; }
.nav-toggle.open .nav-toggle-bar { background: transparent; }
.nav-toggle.open .nav-toggle-bar::before { transform: rotate(45deg); top: 0; background: var(--primary); }
.nav-toggle.open .nav-toggle-bar::after { transform: rotate(-45deg); top: 0; background: var(--primary); }

.mobile-menu {
  display: none;
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 12px 20px 24px;
}
.mobile-menu a {
  display: block;
  padding: 12px 8px;
  font-size: 16px;
  color: var(--text);
  border-radius: 8px;
  transition: background .2s, color .2s;
}
.mobile-menu a:hover {
  background: rgba(59, 110, 165, 0.06);
  color: var(--primary);
}
.mobile-menu a.active {
  color: var(--primary);
  font-weight: 600;
}

/* Hero */
.hero {
  background: var(--soft-bg);
  border-bottom: 1px solid var(--border);
  padding: 80px 0 96px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-content .badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(18, 143, 130, 0.08);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero-content h1 {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 18px;
}
.hero-content p.lead {
  font-size: 17px;
  color: var(--text);
  max-width: 480px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-visual {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: var(--alt-bg);
  box-shadow: var(--shadow-hover);
  aspect-ratio: 5 / 4;
}
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
}
.hero-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(30, 50, 80, 0) 60%, rgba(30, 50, 80, 0.08) 100%);
  border-radius: 16px;
  pointer-events: none;
}
.hero-deco {
  position: absolute;
  border-radius: 8px;
  border: 2px solid rgba(59, 110, 165, 0.3);
  width: 80px;
  height: 80px;
  right: -20px;
  top: -20px;
  z-index: 0;
  pointer-events: none;
}
.hero-deco-2 {
  position: absolute;
  border-radius: 50%;
  background: rgba(18, 143, 130, 0.1);
  width: 120px;
  height: 120px;
  left: -36px;
  bottom: -36px;
  pointer-events: none;
}

/* Stats bar */
.stats-bar {
  background: var(--alt-bg);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat-item {
  text-align: center;
  padding: 12px 24px;
  position: relative;
}
.stat-item + .stat-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 36px;
  width: 1px;
  background: #D6E0EA;
}
.stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--heading);
  line-height: 1.3;
}
.stat-label {
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

/* Features */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 40px 0;
}
.feature-row + .feature-row {
  border-top: 1px solid var(--border);
}
.feature-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--alt-bg);
  box-shadow: var(--shadow);
  transition: box-shadow .3s ease, transform .3s ease;
  aspect-ratio: 16 / 10;
}
.feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}
.feature-img:hover {
  box-shadow: var(--shadow-hover);
}
.feature-text h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 14px;
  line-height: 1.35;
}
.feature-text p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  max-width: 480px;
}
.feature-tag {
  display: inline-block;
  background: rgba(59, 110, 165, 0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.feature-row.reverse .feature-img {
  order: 2;
}
.feature-row.reverse .feature-text {
  order: 1;
}

/* Screenshot carousel */
.screenshots-section {
  background: var(--soft-bg);
}
.carousel-wrap {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
}
.carousel-viewport {
  background: #EAF0F7;
  border-radius: 16px;
  overflow: hidden;
  padding: 16px;
  box-shadow: var(--shadow);
}
.carousel-track {
  display: flex;
  transition: transform .35s ease;
  border-radius: 12px;
  overflow: hidden;
}
.carousel-slide {
  min-width: 100%;
  border-radius: 12px;
  overflow: hidden;
  background: #EAF0F7;
}
.carousel-slide img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 12px;
  border: 2px solid transparent;
  transition: border-color .3s, transform .3s;
}
.carousel-slide.active img {
  border-color: var(--primary);
  transform: scale(1.02);
}
.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 20px;
}
.carousel-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--primary);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .25s, border-color .25s, transform .2s;
}
.carousel-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.carousel-btn:active {
  transform: scale(0.95);
}
.carousel-dots {
  display: flex;
  gap: 8px;
}
.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #CBD5E1;
  border: none;
  padding: 0;
  transition: background .25s, width .25s;
}
.carousel-dot.active {
  background: var(--primary);
  width: 24px;
}
.carousel-info h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 12px;
}
.carousel-info p {
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 20px;
}
.carousel-info .info-desc {
  border-left: 3px solid var(--primary);
  padding: 12px 18px;
  background: #F7FAFD;
  border-radius: 0 8px 8px 0;
}

/* Requirements */
.req-table {
  max-width: 760px;
  margin: 0 auto;
}
.req-table-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.6;
}
.req-table-row:last-child {
  border-bottom: none;
}
.req-label {
  font-weight: 600;
  color: var(--heading);
  font-size: 15px;
}
.req-value {
  color: var(--text);
  font-size: 15px;
}
.req-note {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-top: 24px;
}

/* FAQ */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  background: transparent;
  padding: 22px 12px 22px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--heading);
  text-align: left;
  transition: color .25s;
  border-radius: 0;
}
.faq-item-header:hover {
  color: var(--primary);
}
.faq-item-header .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--primary);
  transition: transform .3s, background .3s, color .3s, border-color .3s;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.faq-item-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .3s ease;
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
}
.faq-item.open .faq-item-answer {
  max-height: 320px;
  padding: 0 12px 22px 0;
  background: var(--soft-bg);
  border-radius: 0 0 8px 8px;
}
.faq-item.open .faq-item-answer p {
  padding: 0 8px;
}

/* Testimonials */
.testimonials-section {
  background: var(--alt-bg);
}
.masonry {
  columns: 3;
  column-gap: 24px;
}
.t-card {
  break-inside: avoid;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 28px;
  margin-bottom: 24px;
  transition: box-shadow .3s ease;
}
.t-card:hover {
  box-shadow: var(--shadow-hover);
}
.t-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.t-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #E2E9F1;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 15px;
  flex-shrink: 0;
}
.t-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--heading);
}
.t-role {
  font-size: 12px;
  color: var(--muted);
}
.t-stars {
  color: #D99A2B;
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.t-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
}

/* Download panel */
.download-panel {
  background: #1E2A38;
  border-radius: 20px;
  padding: 56px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.download-panel::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(59, 110, 165, 0.2);
  pointer-events: none;
}
.download-panel::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(18, 143, 130, 0.15);
  pointer-events: none;
}
.download-panel h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.download-panel p.version-info {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}
.download-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.dl-win {
  background: var(--accent);
  color: #fff;
  padding: 14px 36px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  box-shadow: var(--accent-shadow);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: background .25s, transform .2s, box-shadow .25s;
}
.dl-win:hover {
  background: #0f7a6e;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 16px 32px -12px rgba(18, 143, 130, 0.5);
}
.dl-mac {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  padding: 13px 36px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: background .25s, transform .2s, border-color .25s;
}
.dl-mac:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  transform: translateY(-1px);
}
.download-alt {
  margin-top: 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  position: relative;
  z-index: 1;
}
.download-alt a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: underline;
  padding: 4px 8px;
}
.download-alt a:hover {
  color: #fff;
}

/* News / CMS */
.news-card {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow);
  transition: box-shadow .3s ease, transform .3s ease;
  border: 1px solid var(--border);
  min-height: 110px;
}
.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.news-thumb {
  flex-shrink: 0;
  width: 120px;
  height: 84px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #EAF0F7;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
  transition: transform .3s;
}
.news-card:hover .news-thumb img {
  transform: scale(1.04);
}
.news-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  justify-content: center;
  min-width: 0;
}
.news-tag {
  display: inline-block;
  align-self: flex-start;
  background: rgba(59, 110, 165, 0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.news-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.news-info h3 a {
  color: inherit;
  display: block;
}
.news-info h3 a:hover {
  color: var(--primary);
}
.news-excerpt {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-time {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.news-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.news-empty {
  text-align: center;
  padding: 64px 20px;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border);
  color: var(--muted);
}
.news-empty .empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}
.news-empty p {
  font-size: 15px;
}

/* Bottom CTA */
.cta-section {
  background: var(--soft-bg);
  text-align: center;
  padding: 72px 0;
}
.cta-section h2 {
  font-size: 28px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 16px;
  line-height: 1.35;
}
.cta-section p {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 32px;
}

/* Footer */
.site-footer {
  background: var(--alt-bg);
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo {
  position: static;
  transform: none;
  font-size: 20px;
  margin-bottom: 14px;
  display: inline-flex;
}
.footer-brand p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 16px;
}
.footer-col a,
.footer-col span {
  display: block;
  font-size: 14px;
  color: var(--text);
  line-height: 2.2;
  transition: color .2s;
}
.footer-col a:hover {
  color: var(--primary);
}
.footer-col .contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  line-height: 2.2;
  font-size: 14px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

/* Focus states for accessibility */
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(59, 110, 165, 0.25);
  outline-offset: 2px;
}

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

/* Responsive */
@media (max-width: 1200px) {
  .hero-inner {
    gap: 40px;
  }
  .feature-row {
    gap: 36px;
  }
  .carousel-wrap {
    gap: 32px;
  }
}

@media (max-width: 1024px) {
  .section {
    padding: 72px 0;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content p.lead {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-visual {
    max-width: 560px;
    margin: 0 auto;
  }
  .feature-row {
    grid-template-columns: 1fr;
  }
  .feature-row.reverse .feature-img {
    order: 0;
  }
  .feature-row.reverse .feature-text {
    order: 0;
  }
  .feature-text p {
    max-width: 100%;
  }
  .carousel-wrap {
    grid-template-columns: 1fr;
  }
  .carousel-info {
    text-align: center;
  }
  .carousel-info .info-desc {
    text-align: left;
  }
  .masonry {
    columns: 2;
  }
  .news-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  .section {
    padding: 56px 0;
  }
  .nav-left,
  .nav-right {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .header-inner {
    height: 60px;
  }
  .logo {
    font-size: 18px;
  }
  .logo-icon {
    width: 24px;
    height: 24px;
  }
  .mobile-menu {
    display: none;
  }
  .mobile-menu.open {
    display: block;
  }
  .hero {
    padding: 48px 0 56px;
  }
  .hero-content h1 {
    font-size: 28px;
  }
  .hero-content p.lead {
    font-size: 15px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 0;
  }
  .stat-item + .stat-item::before {
    display: none;
  }
  .stat-item:nth-child(3)::before {
    display: block;
    position: absolute;
    left: 50%;
    top: -8px;
    transform: translateX(-50%);
    height: 1px;
    width: 36px;
    background: #D6E0EA;
  }
  .section-head h2 {
    font-size: 22px;
  }
  .req-table-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .download-panel {
    padding: 40px 20px;
  }
  .download-panel h2 {
    font-size: 24px;
  }
  .download-btns {
    flex-direction: column;
    align-items: stretch;
  }
  .dl-win,
  .dl-mac {
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }
  .masonry {
    columns: 1;
  }
  .news-card {
    flex-direction: column;
  }
  .news-thumb {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-md);
  }
  .news-thumb img {
    aspect-ratio: 16 / 9;
    object-fit: cover;
  }
  .carousel-btn {
    width: 36px;
    height: 36px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .btn-primary,
  .btn-secondary {
    width: 100%;
    padding: 14px 20px;
  }
  .stat-value {
    font-size: 20px;
  }
  .cta-section {
    padding: 48px 0;
  }
  .cta-section h2 {
    font-size: 22px;
  }
  .btn-text {
    justify-content: center;
  }
}

/* roulang page: category1 */
:root {
            --primary: #3B6EA5;
            --primary-dark: #2C5688;
            --accent: #128F82;
            --accent-dark: #0E7166;
            --text-heading: #1E2A38;
            --text-body: #3E4E5D;
            --text-muted: #7A8B9C;
            --border: #E2E9F1;
            --bg-site: #F5F8FC;
            --bg-card: #FFFFFF;
            --bg-light: #EDF3F9;
            --bg-faq: #F7FAFD;
            --gold: #D99A2B;
            --danger: #C0444A;
            --warning: #C7772C;
            --success: #128F82;
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-tag: 6px;
            --radius-img: 12px;
            --radius-input: 8px;
            --shadow-card: 0 10px 30px -12px rgba(30, 50, 80, 0.14);
            --shadow-hover: 0 20px 45px -16px rgba(30, 50, 80, 0.22);
            --shadow-accent: 0 12px 28px -12px rgba(18, 143, 130, 0.4);
            --container-w: 1180px;
            --space-section: 96px;
            --space-section-md: 64px;
            --space-section-sm: 48px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-site);
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius-img);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 32px;
        }
        .section-header {
            max-width: 720px;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 28px;
            line-height: 1.35;
            font-weight: 600;
            color: var(--text-heading);
            letter-spacing: -0.01em;
        }
        .section-header p {
            margin-top: 12px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            border-top: 2px solid var(--primary);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            position: relative;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }
        .nav-left {
            justify-content: flex-start;
        }
        .nav-right {
            justify-content: flex-end;
        }
        .nav-link {
            font-size: 15px;
            color: var(--text-body);
            font-weight: 500;
            padding: 8px 2px;
            position: relative;
            transition: color .25s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 3px;
            border-radius: 999px;
            background: var(--primary);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 19px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.01em;
            text-decoration: none;
            padding: 8px 0;
            white-space: nowrap;
            padding: 4px 8px;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
        }
        .logo:hover {
            color: var(--text-heading);
        }
        .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: inline-block;
            flex-shrink: 0;
            position: relative;
        }
        .logo-icon::after {
            content: "";
            position: absolute;
            inset: 6px;
            border-radius: 5px;
            background: rgba(255, 255, 255, 0.28);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            transition: background .25s ease;
        }
        .nav-toggle:hover {
            background: var(--bg-light);
        }
        .nav-toggle-bar {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-heading);
            border-radius: 2px;
            transition: transform .3s ease, opacity .3s ease;
        }
        .nav-toggle.open .nav-toggle-bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open .nav-toggle-bar:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open .nav-toggle-bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            padding: 20px 32px 28px;
            flex-direction: column;
            gap: 4px;
            box-shadow: 0 12px 24px rgba(30, 50, 80, 0.08);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 16px;
            color: var(--text-body);
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-weight: 500;
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            transition: background .25s ease, color .25s ease, box-shadow .25s ease, transform .2s ease, border-color .25s ease;
            white-space: nowrap;
            text-decoration: none;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(59, 110, 165, 0.25);
            outline-offset: 2px;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 16px 32px -12px rgba(18, 143, 130, 0.5);
        }
        .btn-secondary {
            background: var(--bg-card);
            border: 1px solid #C9D6E2;
            color: var(--primary);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #FBFCFE;
        }
        .btn-text {
            background: transparent;
            border: none;
            color: var(--primary);
            padding: 8px 14px;
            font-weight: 500;
            border-radius: 8px;
        }
        .btn-text:hover {
            background: #EAF0F7;
            color: var(--primary);
        }
        .page-hero {
            position: relative;
            padding: 64px 0 72px;
            background-color: var(--bg-light);
            overflow: hidden;
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(245, 248, 252, 0.96), rgba(245, 248, 252, 0.7) 60%, rgba(245, 248, 252, 0.4));
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-content h1 {
            font-size: 40px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.02em;
        }
        .hero-content .hero-sub {
            margin-top: 16px;
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            max-width: 620px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 28px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--border);
            border-radius: var(--radius-tag);
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }
        .feature-summary {
            padding: 56px 0;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
        }
        .summary-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .summary-item {
            position: relative;
            padding-left: 20px;
        }
        .summary-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 6px;
            width: 3px;
            height: 36px;
            border-radius: 3px;
            background: var(--accent);
        }
        .summary-item .num {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.2;
        }
        .summary-item .label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
        }
        .feature-details {
            padding: var(--space-section) 0;
            background: var(--bg-site);
        }
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            padding: 40px 0;
        }
        .feature-row+.feature-row {
            border-top: 1px solid var(--border);
        }
        .feature-image img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }
        .feature-copy h3 {
            font-size: 24px;
            line-height: 1.35;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 16px;
        }
        .feature-copy p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 16px;
        }
        .feature-copy ul {
            list-style: none;
            padding: 0;
        }
        .feature-copy li {
            position: relative;
            padding-left: 22px;
            font-size: 14px;
            color: var(--text-body);
            margin-bottom: 8px;
            line-height: 1.6;
        }
        .feature-copy li::before {
            content: "";
            position: absolute;
            left: 2px;
            top: 10px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent);
        }
        .scenarios {
            padding: var(--space-section) 0;
            background: var(--bg-card);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: box-shadow .3s ease, transform .3s ease;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scenario-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 20px;
        }
        .scenario-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .scenario-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
        }
        .scenario-banner {
            margin-top: 24px;
            border-radius: var(--radius-card);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 40px 48px;
            position: relative;
            overflow: hidden;
            min-height: 180px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .scenario-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(30, 42, 56, 0.82), rgba(30, 42, 56, 0.45));
        }
        .scenario-banner h3 {
            position: relative;
            z-index: 2;
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }
        .scenario-banner p {
            position: relative;
            z-index: 2;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.88);
            max-width: 480px;
        }
        .process-section {
            padding: var(--space-section) 0;
            background: var(--bg-site);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        .process-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: box-shadow .3s ease;
        }
        .process-item:hover {
            box-shadow: var(--shadow-card);
        }
        .process-num {
            display: inline-flex;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .process-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .process-item p {
            font-size: 14px;
            line-height: 1.6;
            color: var(--text-muted);
        }
        .faq-section {
            padding: var(--space-section) 0;
            background: var(--bg-card);
        }
        .faq-list {
            max-width: 760px;
        }
        .faq-item {
            border-top: 1px solid var(--border);
        }
        .faq-item:last-child {
            border-bottom: 1px solid var(--border);
        }
        .faq-question {
            display: block;
            width: 100%;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            padding: 20px 44px 20px 0;
            background: none;
            border: none;
            position: relative;
            cursor: pointer;
            transition: background .25s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question::after {
            content: "+";
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 22px;
            color: var(--primary);
            transition: transform .3s ease;
            font-weight: 400;
        }
        .faq-item.open .faq-question::after {
            transform: translateY(-50%) rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-body);
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding-bottom: 20px;
            padding-right: 24px;
            background: var(--bg-faq);
            padding-left: 16px;
            padding-top: 4px;
        }
        .related-section {
            padding: var(--space-section) 0;
            background: var(--bg-site);
        }
        .related-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .related-card {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            transition: box-shadow .3s ease, transform .3s ease;
        }
        .related-card:hover {
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .related-card .related-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }
        .related-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
        }
        .related-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 3px;
        }
        .cta-section {
            padding: 64px 0;
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            text-align: center;
        }
        .cta-panel {
            background: #1E2A38;
            border-radius: 20px;
            padding: 56px 32px;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(18, 143, 130, 0.2);
            transform: translate(40%, -40%);
        }
        .cta-panel h2 {
            position: relative;
            font-size: 28px;
            font-weight: 600;
            color: #fff;
            line-height: 1.35;
            margin-bottom: 10px;
        }
        .cta-panel p {
            position: relative;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.72);
            margin-bottom: 28px;
        }
        .cta-buttons {
            position: relative;
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-buttons .btn-primary {
            background: var(--accent);
            box-shadow: var(--shadow-accent);
        }
        .cta-buttons .btn-secondary {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .cta-buttons .btn-secondary:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .site-footer {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand .logo {
            position: static;
            transform: none;
            display: inline-flex;
            margin-bottom: 14px;
            padding: 0;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 14px;
            color: var(--text-body);
            transition: color .25s ease;
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-col .contact-item {
            display: block;
            padding: 5px 0;
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
        }
        @media (max-width: 1024px) {
            .nav-left,
            .nav-right {
                gap: 16px;
            }
            .header-inner {
                padding: 0 24px;
            }
            .hero-content h1 {
                font-size: 34px;
            }
            .feature-row {
                gap: 40px;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            .nav-left,
            .nav-right {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .logo {
                position: static;
                transform: none;
                margin: 0 auto;
            }
            .header-inner {
                height: 64px;
            }
            .page-hero {
                padding: 48px 0 56px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content .hero-sub {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .summary-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .feature-details {
                padding: 48px 0;
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 24px 0;
            }
            .feature-row .feature-image {
                order: 1;
            }
            .feature-row .feature-copy {
                order: 2;
            }
            .scenarios {
                padding: 48px 0;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .scenario-banner {
                padding: 32px 24px;
            }
            .process-section {
                padding: 48px 0;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .faq-section {
                padding: 48px 0;
            }
            .related-section {
                padding: 48px 0;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-panel {
                padding: 40px 20px;
            }
            .cta-panel h2 {
                font-size: 22px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-buttons .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 480px) {
            .summary-grid {
                grid-template-columns: 1fr;
            }
            .summary-item {
                padding-left: 16px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .scenario-card {
                padding: 20px;
            }
            .process-item {
                padding: 20px;
            }
            .related-card {
                padding: 20px;
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom {
                font-size: 12px;
                padding: 16px 0;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                transition: none !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: article */
:root {
  --bg: #F5F8FC;
  --card-bg: #FFFFFF;
  --primary: #3B6EA5;
  --primary-dark: #2C5688;
  --accent: #128F82;
  --accent-dark: #0F7A6E;
  --heading: #1E2A38;
  --body: #3E4E5D;
  --muted: #7A8B9C;
  --border: #E2E9F1;
  --section-bg: #EDF3F9;
  --section-alt: #FBFCFE;
  --shadow-card: 0 10px 30px -12px rgba(30,50,80,.14);
  --shadow-hover: 0 20px 45px -16px rgba(30,50,80,.22);
  --shadow-btn: 0 12px 28px -12px rgba(18,143,130,.4);
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-tag: 6px;
  --radius-img: 12px;
  --radius-input: 8px;
  --transition: .25s ease;
  --container: 1180px;
  --font: system-ui, -apple-system, "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; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--body);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; height: auto; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style-position: inside; }
.container { max-width: var(--container); margin-inline: auto; padding-inline: 32px; }
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(59,110,165,.25);
  outline-offset: 2px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .01em;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #FFFFFF;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 6px 16px -8px rgba(18,143,130,.4); }
.btn-secondary {
  background: #FFFFFF;
  color: var(--primary);
  border: 1px solid #C9D6E2;
}
.btn-secondary:hover { border-color: var(--primary); background: #F0F5F9; color: var(--primary-dark); }
.btn-secondary:active { transform: translateY(1px); }
.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition);
}
.btn-text:hover { background: var(--section-bg); color: var(--primary-dark); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.93);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  border-top: 2px solid var(--primary);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 74px;
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.nav-toggle:hover { background: var(--section-bg); }
.nav-toggle-bar { width: 20px; height: 2px; background: var(--heading); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }
.nav-left { grid-column: 1; display: flex; gap: 30px; align-items: center; justify-content: flex-start; }
.nav-right { grid-column: 3; display: flex; gap: 30px; align-items: center; justify-content: flex-end; }
.logo {
  grid-column: 2;
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--heading);
  letter-spacing: .01em;
  transition: opacity var(--transition);
}
.logo:hover { opacity: .85; color: var(--heading); }
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #5B8FC3);
  position: relative;
  flex-shrink: 0;
  box-shadow: 0 6px 14px -6px rgba(59,110,165,.5);
}
.logo-icon::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  background: #fff;
  border-radius: 4px;
  left: 12px;
  top: 12px;
  box-shadow: 4px 4px 0 rgba(255,255,255,.3);
}
.nav-link {
  font-size: 15px;
  color: var(--body);
  padding: 8px 2px;
  position: relative;
  line-height: 1.4;
  transition: color var(--transition);
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}
.mobile-menu { display: none; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 24px;
  padding-bottom: 8px;
  font-size: 13px;
  color: var(--muted);
  max-width: 100%;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .current {
  color: var(--body);
  max-width: 420px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.breadcrumb-sep { color: #C0CCDA; user-select: none; }

.article-header {
  padding: 36px 0 28px;
  text-align: center;
}
.article-header h1 {
  font-size: 36px;
  line-height: 1.3;
  color: var(--heading);
  font-weight: 700;
  max-width: 900px;
  margin-inline: auto;
  letter-spacing: -.01em;
}
.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 20px;
  color: var(--muted);
  font-size: 14px;
  flex-wrap: wrap;
}
.meta-divider { width: 4px; height: 4px; border-radius: 50%; background: #C0CCDA; flex-shrink: 0; }
.article-summary {
  max-width: 760px;
  margin-inline: auto;
  margin-top: 26px;
  background: #F7FAFD;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 24px;
  color: var(--body);
  font-size: 15px;
  line-height: 1.75;
  text-align: left;
}

.article-body { padding: 8px 0 60px; }
.article-content {
  max-width: 760px;
  margin-inline: auto;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 52px 56px;
  box-shadow: var(--shadow-card);
}
.article-content h2 {
  font-size: 24px;
  line-height: 1.35;
  color: var(--heading);
  font-weight: 600;
  margin: 42px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.article-content h3 {
  font-size: 19px;
  line-height: 1.4;
  color: var(--heading);
  font-weight: 600;
  margin: 32px 0 12px;
}
.article-content h4 {
  font-size: 17px;
  line-height: 1.4;
  color: var(--heading);
  font-weight: 600;
  margin: 24px 0 10px;
}
.article-content p { margin: 16px 0; line-height: 1.75; }
.article-content strong { color: var(--heading); font-weight: 600; }
.article-content a { text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--primary-dark); }
.article-content ul,
.article-content ol { margin: 18px 0; padding-left: 22px; }
.article-content li { margin: 8px 0; line-height: 1.7; }
.article-content blockquote {
  margin: 26px 0;
  padding: 18px 22px;
  background: #F7FAFD;
  border-left: 3px solid var(--primary);
  border-radius: 0 8px 8px 0;
  color: var(--body);
  font-style: normal;
}
.article-content blockquote p { margin: 6px 0; }
.article-content img {
  border-radius: var(--radius-img);
  border: 1px solid var(--border);
  margin: 26px 0;
  max-width: 100%;
  height: auto;
}
.article-content figure { margin: 26px 0; }
.article-content figure img { margin: 0; }
.article-content figcaption { text-align: center; color: var(--muted); font-size: 13px; margin-top: 10px; }
.article-content pre {
  background: #1E2A38;
  color: #E8F0FA;
  padding: 20px 24px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.65;
  margin: 26px 0;
}
.article-content pre code { background: transparent; padding: 0; font-size: inherit; color: inherit; border: none; }
.article-content code {
  font-family: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas, monospace;
  background: #F0F4F8;
  padding: 2px 6px;
  border-radius: 5px;
  font-size: .9em;
  color: #2C5688;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 26px 0;
  font-size: 14px;
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.article-content th {
  background: #F0F5FA;
  text-align: left;
  padding: 12px 16px;
  color: var(--heading);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.article-content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.article-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

.missing-wrapper {
  max-width: 620px;
  margin: 72px auto 96px;
  text-align: center;
  padding: 56px 48px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-card);
}
.missing-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: #F0F5FA;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.missing-wrapper h1 { font-size: 32px; color: var(--heading); font-weight: 700; margin-bottom: 10px; }
.missing-wrapper p { color: var(--muted); margin-bottom: 26px; }

.related-section {
  background: var(--section-bg);
  padding: 56px 0 72px;
  border-top: 1px solid var(--border);
}
.related-section h2 {
  font-size: 28px;
  color: var(--heading);
  text-align: center;
  font-weight: 600;
  margin-bottom: 36px;
}
.related-grid {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.related-card {
  width: 300px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.related-card img { width: 100%; height: 150px; object-fit: cover; }
.related-card-body { padding: 18px 20px 20px; }
.tag {
  display: inline-block;
  background: #EAF0F7;
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .02em;
  padding: 4px 11px;
  border-radius: var(--radius-tag);
  margin-bottom: 10px;
}
.related-card-body h3 {
  font-size: 16px;
  line-height: 1.4;
  color: var(--heading);
  font-weight: 600;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-body p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 6px;
}
.card-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  margin-top: 12px;
  transition: color var(--transition);
}
.card-link:hover { color: var(--primary-dark); }
.related-actions { text-align: center; }

.site-footer {
  background: var(--section-bg);
  border-top: 1px solid var(--border);
  padding-top: 64px;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo { position: static; transform: none; font-size: 18px; }
.footer-brand p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 18px;
  max-width: 360px;
}
.footer-col h4 { font-size: 15px; font-weight: 600; color: var(--heading); margin-bottom: 16px; }
.footer-col a {
  display: block;
  color: var(--body);
  font-size: 14px;
  padding: 5px 0;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-col a:hover { color: var(--primary); padding-left: 4px; }
.contact-item {
  display: block;
  font-size: 14px;
  color: var(--body);
  padding: 5px 0;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 1024px) {
  .nav-left { gap: 20px; }
  .nav-right { gap: 20px; }
  .article-content { padding: 40px 36px; }
  .related-card { width: 280px; }
}

@media (max-width: 768px) {
  .container { padding-inline: 20px; }
  .header-inner { grid-template-columns: 1fr auto 1fr; height: 64px; }
  .nav-toggle {
    display: flex;
    grid-column: 1;
    justify-self: start;
  }
  .logo { grid-column: 2; justify-self: center; font-size: 17px; }
  .logo-icon { width: 32px; height: 32px; border-radius: 9px; }
  .logo-icon::after { width: 10px; height: 10px; left: 11px; top: 11px; }
  .nav-left, .nav-right { display: none; }
  .mobile-menu { display: none; }
  .mobile-menu.open {
    display: flex;
    flex-direction: column;
    padding: 14px 20px 24px;
    gap: 14px;
    background: var(--card-bg);
    border-top: 1px solid var(--border);
  }
  .mobile-menu a {
    font-size: 16px;
    color: var(--heading);
    padding: 9px 4px;
    border-bottom: 1px solid #F0F4F8;
  }
  .mobile-menu a:last-child { border-bottom: none; }
  .mobile-menu a:hover { color: var(--primary); }
  .mobile-menu a.active { color: var(--primary); font-weight: 600; }

  .breadcrumb { padding-top: 18px; font-size: 12px; gap: 8px; flex-wrap: wrap; }
  .article-header { padding: 24px 0 20px; }
  .article-header h1 { font-size: 28px; }
  .article-summary { padding: 16px 18px; font-size: 14px; }
  .article-body { padding: 4px 0 40px; }
  .article-content { padding: 26px 20px; border-radius: 12px; }
  .article-content h2 { font-size: 22px; }
  .article-content h3 { font-size: 18px; }
  .article-meta { gap: 10px; font-size: 13px; }
  .meta-divider { width: 3px; height: 3px; }

  .related-section { padding: 40px 0 52px; }
  .related-section h2 { font-size: 24px; margin-bottom: 26px; }
  .related-grid { flex-direction: column; align-items: center; }
  .related-card { width: 100%; max-width: 380px; }

  .site-footer { padding-top: 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .footer-brand p { max-width: none; }
  .footer-bottom { padding: 16px 20px; font-size: 12px; }

  .missing-wrapper { margin: 48px 20px 72px; padding: 40px 24px; }
  .missing-wrapper h1 { font-size: 26px; }
}

@media (max-width: 520px) {
  .article-header h1 { font-size: 24px; }
  .btn { width: 100%; }
  .related-actions .btn-text { width: auto; }
  .article-summary { padding: 14px 16px; }
  .footer-bottom { line-height: 1.6; }
  .article-meta { flex-direction: row; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; transform: none !important; }
  html { scroll-behavior: auto; }
}

/* roulang page: category2 */
:root {
  --bg: #F5F8FC;
  --card: #FFFFFF;
  --primary: #3B6EA5;
  --primary-dark: #2C5688;
  --accent: #128F82;
  --success: #128F82;
  --warning: #C7772C;
  --error: #C0444A;
  --title: #1E2A38;
  --body: #3E4E5D;
  --muted: #7A8B9C;
  --border: #E2E9F1;
  --section-alt: #EDF3F9;
  --section-light: #FBFCFE;
  --btn-radius: 10px;
  --card-radius: 14px;
  --img-radius: 12px;
  --tag-radius: 6px;
  --shadow: 0 10px 30px -12px rgba(30, 50, 80, 0.14);
  --shadow-hover: 0 20px 45px -16px rgba(30, 50, 80, 0.22);
  --accent-shadow: 0 12px 28px -12px rgba(18, 143, 130, 0.4);
  --container: 1180px;
  --space-section: 96px;
  --space-section-md: 64px;
  --space-section-sm: 48px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--body);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

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

img {
  max-width: 100%;
  display: block;
  border-radius: var(--img-radius);
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

:focus-visible {
  outline: 3px solid rgba(59, 110, 165, 0.25);
  outline-offset: 2px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 96px 0;
}

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

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

.section-title {
  font-size: 28px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--title);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 15px;
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 48px;
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--btn-radius);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  text-align: center;
  justify-content: center;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--accent-shadow);
}

.btn-primary:hover {
  background: #0E786E;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -14px rgba(18, 143, 130, 0.5);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 8px 20px -10px rgba(18, 143, 130, 0.4);
}

.btn-secondary {
  background: #fff;
  border-color: #C9D6E2;
  color: var(--primary);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-secondary:active {
  transform: translateY(1px);
  box-shadow: none;
}

.btn-block {
  width: 100%;
}

/* Header / Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 72px;
  gap: 24px;
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-left {
  justify-self: start;
}

.nav-right {
  justify-self: end;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--title);
  letter-spacing: 0.01em;
  white-space: nowrap;
  justify-self: center;
}

.logo:hover {
  color: var(--title);
}

.logo-icon {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  position: relative;
  flex-shrink: 0;
}

.logo-icon::after {
  content: "";
  position: absolute;
  inset: 7px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.25);
}

.nav-link {
  font-size: 15px;
  color: var(--body);
  padding: 6px 2px;
  position: relative;
  font-weight: 500;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
  opacity: 0;
  transform: scaleX(0);
  transform-origin: center;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

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

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

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

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  position: relative;
}

.nav-toggle-bar {
  width: 18px;
  height: 2px;
  background: var(--title);
  border-radius: 2px;
  position: relative;
  transition: background-color 0.2s ease;
}

.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--title);
  border-radius: 2px;
  transition: transform 0.3s ease, top 0.3s ease;
}

.nav-toggle-bar::before {
  top: -6px;
}

.nav-toggle-bar::after {
  top: 6px;
}

.nav-toggle.active .nav-toggle-bar {
  background: transparent;
}

.nav-toggle.active .nav-toggle-bar::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle.active .nav-toggle-bar::after {
  top: 0;
  transform: rotate(-45deg);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 18px;
  padding: 20px 32px 28px;
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.mobile-menu a {
  font-size: 16px;
  color: var(--body);
  padding: 6px 0;
  border-bottom: 1px solid #F0F4F8;
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.mobile-menu a.active {
  color: var(--primary);
  font-weight: 600;
}

.mobile-menu.open {
  display: flex;
}

/* Page Hero */
.page-hero {
  background: linear-gradient(180deg, rgba(53, 91, 132, 0.82) 0%, rgba(30, 50, 80, 0.88) 100%), url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
  color: #fff;
  padding: 72px 0;
}

.page-hero .hero-inner {
  max-width: 720px;
}

.hero-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.page-hero h1 {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.82);
  max-width: 600px;
  line-height: 1.7;
}

/* Split Blocks */
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.split-block .section-title {
  font-size: 24px;
  margin-bottom: 16px;
}

.split-block p {
  margin-bottom: 14px;
  color: var(--body);
  line-height: 1.7;
}

.split-media {
  border-radius: var(--img-radius);
  overflow: hidden;
  background: var(--section-alt);
  box-shadow: var(--shadow);
}

.split-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  min-height: 260px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--tag-radius);
  font-size: 13px;
  font-weight: 500;
  background: #EAF1F8;
  color: var(--primary);
  margin-bottom: 12px;
}

.tag-accent {
  background: rgba(18, 143, 130, 0.1);
  color: var(--accent);
}

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

.step-card {
  padding: 32px 28px;
  background: var(--card);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

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

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.step-card h3 {
  font-size: 18px;
  color: var(--title);
  margin-bottom: 10px;
  font-weight: 600;
}

.step-card p {
  color: var(--body);
  font-size: 14px;
  line-height: 1.65;
}

/* Spec Table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.spec-table tr {
  border-bottom: 1px solid var(--border);
}

.spec-table tr:last-child {
  border-bottom: none;
}

.spec-table td {
  padding: 16px 28px;
  font-size: 15px;
}

.spec-table td:first-child {
  color: var(--title);
  font-weight: 600;
  width: 220px;
  background: var(--section-light);
}

.spec-table td:last-child {
  color: var(--body);
}

/* FAQ */
.faq-list {
  border-top: 1px solid var(--border);
  max-width: 860px;
}

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

.faq-question {
  width: 100%;
  text-align: left;
  padding: 22px 40px 22px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--title);
  background: transparent;
  position: relative;
  transition: color 0.25s ease;
}

.faq-question::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  font-weight: 400;
  color: var(--muted);
  transition: transform 0.3s ease, color 0.3s ease;
}

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

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

.faq-item.open .faq-question::after {
  transform: translateY(-50%) rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  padding: 0 40px 0 0;
}

.faq-item.open .faq-answer {
  max-height: 600px;
  padding: 0 40px 24px 0;
}

.faq-answer p {
  color: var(--body);
  font-size: 14px;
  line-height: 1.7;
}

/* CTA Panel */
.download-cta {
  background: var(--title);
  padding: 64px 0;
  color: #fff;
}

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

.download-cta h2 {
  font-size: 28px;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.35;
}

.download-cta p {
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 32px;
  font-size: 15px;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.cta-meta {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

.cta-meta a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: underline;
}

.cta-meta a:hover {
  color: #fff;
}

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

.related-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 24px 28px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

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

.related-card .related-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: #EAF1F8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

.related-card h3 {
  font-size: 16px;
  color: var(--title);
  margin-bottom: 4px;
  font-weight: 600;
}

.related-card p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* Footer */
.site-footer {
  background: var(--section-alt);
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}

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

.footer-brand .logo {
  margin-bottom: 16px;
  justify-content: flex-start;
}

.footer-brand p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--title);
  margin-bottom: 16px;
}

.footer-col a,
.footer-col .contact-item {
  display: block;
  color: var(--body);
  font-size: 14px;
  padding: 5px 0;
  border-bottom: none;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 1024px) {
  .split-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .split-media {
    order: -1;
  }

  .nav-left,
  .nav-right {
    gap: 20px;
  }
}

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

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 22px;
  }

  .header-inner {
    grid-template-columns: auto 1fr auto;
    height: 64px;
  }

  .nav-left,
  .nav-right {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .logo {
    font-size: 16px;
  }

  .page-hero {
    padding: 52px 0;
  }

  .page-hero h1 {
    font-size: 28px;
  }

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

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

  .step-card {
    padding: 24px 20px;
  }

  .spec-table td {
    padding: 14px 18px;
    font-size: 14px;
  }

  .spec-table td:first-child {
    width: 120px;
  }

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

  .related-card {
    padding: 20px;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 0;
  }
}

@media (max-width: 520px) {
  .section {
    padding: 48px 0;
  }

  .section-desc {
    margin-bottom: 32px;
  }

  .spec-table td {
    padding: 12px 14px;
    font-size: 13px;
  }

  .spec-table td:first-child {
    width: 100px;
  }

  .cta-buttons .btn {
    padding: 13px 20px;
  }

  .related-card {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .footer-bottom {
    padding: 16px 0;
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
    scroll-behavior: auto !important;
  }
}

/* roulang page: category3 */
:root {
  --bg: #F5F8FC;
  --bg-soft: #EDF3F9;
  --bg-card: #FFFFFF;
  --primary: #3B6EA5;
  --primary-dark: #2C5688;
  --accent: #128F82;
  --heading: #1E2A38;
  --body: #3E4E5D;
  --muted: #7A8B9C;
  --border: #E2E9F1;
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-tag: 6px;
  --shadow-card: 0 10px 30px -12px rgba(30, 50, 80, 0.14);
  --shadow-hover: 0 20px 45px -16px rgba(30, 50, 80, 0.22);
  --transition: 0.25s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--body);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
ul,
ol {
  list-style: none;
}
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 72px;
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--heading);
  white-space: nowrap;
}
.logo-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--primary);
  position: relative;
  display: inline-block;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(59, 110, 165, 0.3);
}
.logo-icon::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 7px;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border-radius: 4px;
  opacity: 0.85;
}
.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-left {
  justify-content: flex-end;
}
.nav-right {
  justify-content: flex-start;
}
.nav-link {
  font-size: 15px;
  color: var(--body);
  padding: 8px 2px;
  border-bottom: 3px solid transparent;
  border-radius: 2px;
  transition: color var(--transition), border-color var(--transition);
}
.nav-link:hover {
  color: var(--primary);
}
.nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  padding: 0 8px;
}
.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 20px;
  background: var(--heading);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle.open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.mobile-menu {
  display: none;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 32px 24px;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 20px 30px -20px rgba(30, 50, 80, 0.2);
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  font-size: 16px;
  color: var(--body);
  padding: 6px 0;
  border-bottom: 1px solid #f0f4f9;
}
.mobile-menu a.active {
  color: var(--primary);
  font-weight: 600;
}
.category-hero {
  position: relative;
  background: linear-gradient(rgba(245, 248, 252, 0.9), rgba(245, 248, 252, 0.92)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding: 88px 0 72px;
  border-bottom: 1px solid var(--border);
}
.hero-tag {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.04em;
  background: rgba(59, 110, 165, 0.12);
  color: var(--primary);
  padding: 5px 14px;
  border-radius: 999px;
  font-weight: 600;
  margin-bottom: 18px;
}
.category-hero h1 {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 14px;
  max-width: 720px;
}
.category-hero p {
  font-size: 16px;
  color: var(--body);
  max-width: 620px;
  margin-bottom: 28px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 30px;
  border-radius: var(--radius-btn);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  line-height: 1;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 12px 28px -12px rgba(18, 143, 130, 0.4);
}
.btn-primary:hover {
  background: #0e7368;
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -12px rgba(18, 143, 130, 0.45);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 6px 18px -10px rgba(18, 143, 130, 0.4);
}
.btn-secondary {
  background: #fff;
  border: 1px solid #C9D6E2;
  color: var(--primary);
}
.btn-secondary:hover {
  border-color: var(--primary);
  background: rgba(59, 110, 165, 0.04);
}
.btn-secondary:active {
  transform: translateY(1px);
}
.btn:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(59, 110, 165, 0.25);
  outline-offset: 2px;
}
.pillar-bar {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
}
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.pillar-item {
  padding: 10px 28px;
  border-left: 1px solid #dce5ee;
  text-align: center;
}
.pillar-item:first-child {
  border-left: none;
}
.pillar-label {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 4px;
}
.pillar-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}
.process-section {
  padding: 96px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head .section-tag {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.04em;
  display: inline-block;
  margin-bottom: 8px;
}
.section-head h2 {
  font-size: 28px;
  line-height: 1.35;
  color: var(--heading);
  font-weight: 600;
}
.section-head p {
  color: var(--muted);
  margin-top: 10px;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.process-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}
.process-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.process-num {
  width: 44px;
  height: 44px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: rgba(59, 110, 165, 0.1);
  color: var(--primary);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.process-item h3 {
  font-size: 17px;
  color: var(--heading);
  font-weight: 600;
  margin-bottom: 8px;
}
.process-item p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}
.feature-section {
  padding: 96px 0;
  border-top: 1px solid var(--border);
  background: #FBFCFE;
}
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}
.feature-row:last-child {
  margin-bottom: 0;
}
.feature-row.reverse .feature-image {
  order: 2;
}
.feature-row.reverse .feature-content {
  order: 1;
}
.feature-image {
  border-radius: 16px;
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  aspect-ratio: 5/4;
}
.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.feature-image:hover img {
  transform: scale(1.02);
}
.feature-content {
  padding: 12px 0;
}
.feature-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: rgba(18, 143, 130, 0.08);
  padding: 4px 12px;
  border-radius: var(--radius-tag);
  margin-bottom: 14px;
}
.feature-content h2 {
  font-size: 28px;
  line-height: 1.35;
  color: var(--heading);
  font-weight: 600;
  margin-bottom: 16px;
}
.feature-content p {
  color: var(--body);
  line-height: 1.8;
  margin-bottom: 14px;
}
.feature-list {
  list-style: none;
  margin-top: 14px;
}
.feature-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: var(--body);
  font-size: 15px;
  line-height: 1.6;
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.faq-section {
  padding: 96px 0;
}
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:first-child {
  border-top: 1px solid var(--border);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  text-align: left;
  transition: color var(--transition);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-arrow {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--muted);
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-arrow {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 4px;
}
.faq-item.open .faq-answer {
  max-height: 400px;
  padding: 0 4px 22px;
}
.faq-answer p {
  color: var(--body);
  line-height: 1.8;
  font-size: 15px;
  background: #F7FAFD;
  border-radius: 10px;
  padding: 14px 16px;
}
.related-section {
  padding: 64px 0 96px;
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.related-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 8px;
}
.related-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 14px;
}
.related-card .link-more {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.related-card .link-more::after {
  content: "→";
  transition: transform var(--transition);
}
.related-card .link-more:hover::after {
  transform: translateX(4px);
}
.cta-section {
  padding: 80px 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.cta-panel {
  background: #1E2A38;
  border-radius: 20px;
  padding: 64px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-panel::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(59, 110, 165, 0.25);
  top: -100px;
  right: -60px;
}
.cta-panel::after {
  content: "";
  position: absolute;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(18, 143, 130, 0.2);
  bottom: -50px;
  left: -30px;
}
.cta-panel h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.cta-panel p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 480px;
  margin: 0 auto 32px;
  font-size: 16px;
  position: relative;
  z-index: 1;
}
.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--muted);
  max-width: 320px;
  line-height: 1.7;
  margin-top: 10px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 16px;
}
.footer-col a,
.contact-item {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 10px;
  transition: color var(--transition);
}
.footer-col a:hover {
  color: var(--primary);
}
.contact-item {
  cursor: default;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}
@media (max-width: 1024px) {
  .header-inner {
    gap: 12px;
  }
  .nav-left,
  .nav-right {
    gap: 18px;
  }
  .feature-row {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .feature-row.reverse .feature-image {
    order: 1;
  }
  .feature-row.reverse .feature-content {
    order: 2;
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  .header-inner {
    grid-template-columns: 1fr auto 1fr;
  }
  .nav-left,
  .nav-right {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .header-inner .logo {
    justify-self: center;
  }
  .category-hero {
    padding: 60px 0 48px;
  }
  .category-hero h1 {
    font-size: 28px;
  }
  .pillar-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 0;
  }
  .pillar-item {
    border-left: none;
    border-right: 1px solid #dce5ee;
  }
  .pillar-item:nth-child(2n) {
    border-right: none;
  }
  .process-section,
  .feature-section,
  .faq-section,
  .cta-section {
    padding: 64px 0;
  }
  .section-head h2 {
    font-size: 22px;
  }
  .feature-content h2 {
    font-size: 22px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .cta-panel {
    padding: 48px 24px;
  }
  .cta-panel h2 {
    font-size: 24px;
  }
}
@media (max-width: 480px) {
  .hero-actions,
  .cta-actions {
    flex-direction: column;
  }
  .hero-actions .btn,
  .cta-actions .btn {
    width: 100%;
  }
  .pillar-grid {
    grid-template-columns: 1fr;
  }
  .pillar-item {
    border-right: none;
    border-bottom: 1px solid #dce5ee;
    padding: 16px 10px;
  }
  .pillar-item:last-child {
    border-bottom: none;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .category-hero h1 {
    font-size: 26px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
  html {
    scroll-behavior: auto;
  }
}