/* roulang page: index */
:root {
  --primary: #1B6EF3;
  --primary-light: #EAF2FE;
  --primary-dark: #1558C4;
  --accent: #F2652A;
  --accent-light: #FDE8DE;
  --bg: #F7F9FC;
  --surface: #FFFFFF;
  --border: #E3E9F2;
  --text: #142433;
  --text-secondary: #4E6074;
  --text-muted: #8A9BAE;
  --success: #16A34A;
  --danger: #DC2626;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 20px rgba(20, 36, 51, 0.06);
  --shadow-hover: 0 12px 32px rgba(20, 36, 51, 0.12);
  --transition: 0.2s ease;
  --container: 1200px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition);
}
input, textarea {
  font-family: inherit;
  font-size: 14px;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
ul, ol {
  list-style: none;
}
h1, h2, h3, h4, h5 {
  line-height: 1.3;
  font-weight: 700;
}
h1 {
  font-size: 38px;
}
h2 {
  font-size: 28px;
}
h3 {
  font-size: 18px;
  font-weight: 600;
}
.section {
  padding: 96px 0;
}
.section+.section {
  padding-top: 0;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-header .section-kicker {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: 30px;
  color: var(--text);
  margin-bottom: 12px;
}
.section-header p {
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
  font-size: 15px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  line-height: 1.4;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}
.btn:focus-visible {
  outline: 3px solid rgba(27, 110, 243, 0.25);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: #e1551e;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(242, 101, 42, 0.35);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn-light {
  background: #fff;
  color: var(--text);
  box-shadow: var(--shadow-card);
}
.btn-light:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge-accent {
  background: var(--accent-light);
  color: var(--accent);
}
.badge-success {
  background: #e6f7ec;
  color: var(--success);
}
/* ====== Header ====== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(20, 36, 51, 0.03);
}
.header-main {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #f7a76e);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  box-shadow: 0 2px 8px rgba(242, 101, 42, 0.3);
}
.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.3px;
}
.logo-text span {
  color: var(--accent);
}
.nav-search {
  display: flex;
  align-items: center;
  flex: 0 1 320px;
  position: relative;
}
.nav-search input {
  width: 100%;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0 42px 0 16px;
  font-size: 14px;
  background: var(--bg);
  transition: all var(--transition);
}
.nav-search input::placeholder {
  color: var(--text-muted);
}
.nav-search input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(27, 110, 243, 0.12);
}
.nav-search .search-icon {
  position: absolute;
  right: 14px;
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-actions .btn {
  padding: 8px 20px;
  font-size: 14px;
}
.nav-row {
  height: 48px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 100%;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-tabs::-webkit-scrollbar {
  display: none;
}
.nav-tabs a {
  display: inline-flex;
  align-items: center;
  padding: 0 18px;
  height: 36px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all var(--transition);
}
.nav-tabs a:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-tabs a.active {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}
.nav-search-mobile-btn {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 16px;
  background: #fff;
}
/* ====== Hero ====== */
.hero {
  background: #F0F6FF;
  padding: 144px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(242, 101, 42, 0.08), transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -60px;
  left: 10%;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(27, 110, 243, 0.07), transparent 70%);
  border-radius: 50%;
}
.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}
.hero-content .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero-content h1 {
  font-size: 40px;
  line-height: 1.25;
  margin-bottom: 18px;
  color: var(--text);
}
.hero-content h1 .highlight {
  color: var(--accent);
  position: relative;
}
.hero-content .hero-lead {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 30px;
  max-width: 540px;
}
.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}
.hero-trust .trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hero-trust .trust-item i {
  color: var(--success);
}
.hero-visual {
  position: relative;
}
.hero-visual .main-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  overflow: hidden;
  border: 1px solid var(--border);
}
.hero-visual .main-card img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}
.hero-visual .main-card .card-footer {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
}
.hero-visual .main-card .card-footer .title {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}
.hero-visual .main-card .card-footer .version {
  font-size: 12px;
  color: var(--text-muted);
}
.hero-float-badge {
  position: absolute;
  top: 20px;
  left: -14px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 30px;
  box-shadow: 0 6px 18px rgba(242, 101, 42, 0.4);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hero-float-badge i {
  font-size: 14px;
}
/* ====== Feature Grid ====== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(27, 110, 243, 0.2);
}
.feature-card:nth-child(even) {
  transform: translateY(16px);
}
.feature-card:nth-child(even):hover {
  transform: translateY(12px);
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
/* ====== Screenshot Carousel ====== */
.screenshot-wrap {
  position: relative;
}
.screenshot-scroll {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 16px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.screenshot-scroll::-webkit-scrollbar {
  display: none;
}
.screenshot-card {
  flex: 0 0 320px;
  scroll-snap-align: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}
.screenshot-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.screenshot-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}
.screenshot-card .screenshot-info {
  padding: 18px 20px;
}
.screenshot-card .screenshot-info h4 {
  font-size: 16px;
  margin-bottom: 6px;
  color: var(--text);
}
.screenshot-card .screenshot-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.slider-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}
.slide-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.slide-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.slider-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
}
.slider-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d5dde8;
  transition: all var(--transition);
}
.slider-dots .dot.active {
  background: var(--primary);
  width: 22px;
  border-radius: 999px;
}
/* ====== Requirements ====== */
.requirements-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.req-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
}
.req-card .req-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}
.req-card .req-header .req-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.req-card .req-header h3 {
  font-size: 18px;
}
.req-table {
  width: 100%;
  border-collapse: collapse;
}
.req-table tr {
  border-bottom: 1px solid #f0f3f8;
}
.req-table tr:last-child {
  border-bottom: none;
}
.req-table th, .req-table td {
  padding: 12px 8px;
  text-align: left;
  font-size: 14px;
}
.req-table th {
  color: var(--text-muted);
  font-weight: 500;
  width: 40%;
}
.req-table td {
  color: var(--text);
  font-weight: 500;
}
.req-card .req-footer {
  margin-top: 24px;
  display: flex;
  gap: 12px;
}
.req-card .req-footer .btn {
  padding: 8px 18px;
  font-size: 13px;
}
/* ====== Review Wall ====== */
.review-wall {
  column-count: 3;
  column-gap: 24px;
}
.review-card {
  break-inside: avoid;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  margin-bottom: 24px;
  transition: all var(--transition);
}
.review-card:hover {
  box-shadow: var(--shadow-hover);
}
.review-card.featured {
  border: 2px solid var(--accent);
}
.review-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 15px;
  flex-shrink: 0;
}
.review-meta .name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.review-meta .role {
  font-size: 12px;
  color: var(--text-muted);
}
.review-stars {
  color: #ffb400;
  font-size: 14px;
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.review-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.review-card .review-extra {
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
/* ====== Download Zone ====== */
.download-zone {
  background: var(--primary-light);
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.download-zone::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(242, 101, 42, 0.1), transparent 70%);
}
.download-zone .section-header {
  margin-bottom: 40px;
}
.download-btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-bottom: 20px;
  position: relative;
  z-index: 2;
}
.download-btns .btn {
  min-width: 180px;
  padding: 14px 32px;
  font-size: 16px;
}
.download-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 32px;
  position: relative;
  z-index: 2;
}
.download-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.download-note {
  font-size: 13px;
  color: var(--text-muted);
  position: relative;
  z-index: 2;
}
/* ====== News / CMS List ====== */
.news-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 16px;
}
.news-header h2 {
  font-size: 30px;
}
.news-header .more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  transition: all var(--transition);
}
.news-header .more-link:hover {
  gap: 10px;
}
.news-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}
.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(27, 110, 243, 0.2);
}
.news-thumb {
  flex: 0 0 180px;
  overflow: hidden;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-thumb img {
  transform: scale(1.05);
}
.news-info {
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}
.news-tags {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.news-time {
  font-size: 12px;
  color: var(--text-muted);
}
.news-info h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-more {
  margin-top: auto;
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 24px;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}
.empty-state .empty-icon {
  font-size: 40px;
  margin-bottom: 12px;
}
.empty-state p {
  color: var(--text-muted);
  font-size: 15px;
}
/* ====== FAQ ====== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(27, 110, 243, 0.08);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 52px;
  padding: 0 22px;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
}
.faq-question:hover {
  background: var(--bg);
}
.faq-question .faq-icon {
  font-size: 18px;
  color: var(--text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer .answer-inner {
  padding: 0 22px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
/* ====== CTA Banner ====== */
.cta-banner {
  background: linear-gradient(135deg, #1B6EF3, #1558C4);
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  top: -40px;
  left: -40px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12), transparent 70%);
}
.cta-banner::after {
  content: "";
  position: absolute;
  bottom: -60px;
  right: -30px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(242, 101, 42, 0.2), transparent 70%);
}
.cta-banner h2 {
  color: #fff;
  font-size: 30px;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
}
.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  margin-bottom: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 2;
}
.cta-banner .btn {
  position: relative;
  z-index: 2;
  background: #fff;
  color: var(--primary);
}
.cta-banner .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.15);
}
/* ====== Footer ====== */
.site-footer {
  background: #142433;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 96px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 64px 0 48px;
}
.footer-brand .logo-text {
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand .logo-text span {
  color: var(--accent);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  max-width: 280px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 18px;
  font-weight: 600;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: all var(--transition);
}
.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 12px;
}
.footer-contact li i {
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-bottom .legal-links {
  display: flex;
  gap: 16px;
}
.footer-bottom .legal-links a {
  color: rgba(255, 255, 255, 0.4);
}
.footer-bottom .legal-links a:hover {
  color: #fff;
}
/* ====== Responsive ====== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-content {
    text-align: center;
  }
  .hero-content .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-btns {
    justify-content: center;
  }
  .hero-trust {
    justify-content: center;
  }
  .hero-visual .main-card img {
    height: 320px;
  }
  .hero-float-badge {
    left: 8px;
  }
  .news-card {
    flex-direction: column;
  }
  .news-thumb {
    flex: 0 0 auto;
    height: 160px;
  }
  .news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .review-wall {
    column-count: 2;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}
@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }
  h1 {
    font-size: 32px;
  }
  h2 {
    font-size: 24px;
  }
  .header-main {
    height: 58px;
  }
  .nav-search {
    display: none;
  }
  .nav-search-mobile-btn {
    display: flex;
  }
  .header-actions .btn {
    padding: 6px 14px;
    font-size: 13px;
  }
  .nav-row {
    height: 44px;
  }
  .nav-tabs a {
    padding: 0 14px;
    font-size: 13px;
    height: 32px;
  }
  .hero {
    padding-top: 120px;
    padding-bottom: 56px;
  }
  .hero-content h1 {
    font-size: 30px;
  }
  .hero-visual .main-card img {
    height: 240px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .feature-card:nth-child(even) {
    transform: none;
  }
  .feature-card:nth-child(even):hover {
    transform: translateY(-4px);
  }
  .requirements-grid {
    grid-template-columns: 1fr;
  }
  .download-zone {
    padding: 40px 24px;
  }
  .download-btns .btn {
    min-width: 140px;
    padding: 12px 20px;
    font-size: 14px;
    width: 100%;
  }
  .news-list {
    grid-template-columns: 1fr;
  }
  .review-wall {
    column-count: 1;
  }
  .cta-banner {
    padding: 40px 24px;
  }
  .cta-banner h2 {
    font-size: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .screenshot-card {
    flex-basis: 260px;
  }
  .section-header {
    margin-bottom: 32px;
  }
  .news-header {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .logo-text {
    font-size: 16px;
  }
  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }
  .hero-content h1 {
    font-size: 26px;
  }
  .hero-btns .btn {
    width: 100%;
  }
  .hero-trust {
    justify-content: center;
    gap: 10px;
    font-size: 12px;
  }
  .hero-visual .main-card img {
    height: 180px;
  }
  .screenshot-card {
    flex-basis: 220px;
  }
  .screenshot-card img {
    height: 140px;
  }
  .req-card {
    padding: 24px 20px;
  }
  .req-table th, .req-table td {
    font-size: 13px;
    padding: 10px 6px;
  }
  .download-btns .btn {
    min-width: 100%;
  }
  .news-thumb {
    height: 140px;
  }
  .hero-float-badge {
    font-size: 12px;
    padding: 6px 12px;
  }
}

/* roulang page: article */
:root{
  --primary:#1B6EF3;
  --primary-light:#EAF2FE;
  --primary-dark:#1558C4;
  --accent:#F2652A;
  --accent-light:#FDE8DE;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --border:#E3E9F2;
  --text:#142433;
  --text-2:#4E6074;
  --text-3:#8A9BAE;
  --radius-lg:16px;
  --radius-md:10px;
  --radius-sm:8px;
  --shadow:0 4px 20px rgba(20,36,51,.06);
  --shadow-hover:0 12px 32px rgba(20,36,51,.12);
  --tr:.2s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--primary-dark)}
button,input,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:var(--surface);border-bottom:1px solid var(--border)}
.header-top{height:64px;display:flex;align-items:center;border-bottom:1px solid var(--border)}
.header-top-inner{display:flex;align-items:center;gap:24px;width:100%}
.logo{display:flex;align-items:center;gap:8px;flex-shrink:0}
.logo-icon{font-size:22px;line-height:1}
.logo-text{font-size:20px;font-weight:700;color:var(--text);letter-spacing:.5px}
.logo-text span{color:var(--accent)}
.header-search{flex:1;max-width:320px;margin:0 auto;position:relative}
.header-search input{width:100%;height:40px;border:1px solid var(--border);border-radius:999px;padding:0 16px 0 38px;font-size:14px;background:var(--bg);outline:none;transition:border var(--tr),box-shadow var(--tr)}
.header-search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(27,110,243,.15);background:var(--surface)}
.header-search .icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:14px;pointer-events:none}
.header-cta{margin-left:auto;flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:var(--radius-md);padding:10px 24px;font-size:14px;font-weight:600;line-height:1.2;border:1px solid transparent;transition:all var(--tr);outline:none}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-accent:hover{background:#E1551F;color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(242,101,42,.3)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark)}
.btn-lg{padding:14px 36px;font-size:16px;border-radius:12px}
.btn-sm{padding:6px 16px;font-size:13px;border-radius:8px}

/* ===== 导航 Tabs ===== */
.header-nav{background:var(--bg);border-bottom:1px solid var(--border)}
.nav-tabs{display:flex;align-items:center;gap:4px;height:48px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tabs a{display:inline-flex;align-items:center;padding:0 18px;height:34px;border-radius:999px;font-size:14px;font-weight:500;color:var(--text-2);white-space:nowrap;transition:all var(--tr)}
.nav-tabs a:hover{color:var(--primary);background:var(--primary-light)}
.nav-tabs a.active{background:var(--accent);color:#fff;font-weight:600}
.nav-tabs a.active:hover{color:#fff;background:var(--accent)}

/* ===== 面包屑 ===== */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:24px 0 12px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-3);transition:color var(--tr)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--border);font-weight:600}
.breadcrumb .current{color:var(--text-2);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===== 文章主体 ===== */
.article-main{padding:12px 0 64px}
.article-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:48px;margin-bottom:48px}
.article-header{margin-bottom:32px}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:16px}
.badge{display:inline-flex;align-items:center;padding:4px 14px;border-radius:999px;font-size:12px;font-weight:600;background:var(--primary-light);color:var(--primary)}
.badge-orange{background:var(--accent-light);color:var(--accent)}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-3)}
.meta-item svg{width:15px;height:15px}
.article-header h1{font-size:38px;font-weight:800;line-height:1.3;color:var(--text);letter-spacing:-.5px}
.article-desc{margin-top:12px;font-size:16px;color:var(--text-2);line-height:1.7}
.article-cover{margin:0 0 36px;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border)}
.article-cover img{width:100%;height:auto;aspect-ratio:16/8;object-fit:cover}
.article-content{max-width:780px;margin:0 auto}
.article-content p,.article-content ul,.article-content ol{margin-bottom:22px;font-size:16px;line-height:1.85;color:var(--text-2)}
.article-content h2{font-size:26px;font-weight:700;color:var(--text);margin:40px 0 16px;padding-bottom:8px;border-bottom:2px solid var(--primary-light)}
.article-content h3{font-size:20px;font-weight:700;color:var(--text);margin:28px 0 12px}
.article-content ul,.article-content ol{padding-left:24px}
.article-content ul li,.article-content ol li{margin-bottom:8px}
.article-content blockquote{border-left:4px solid var(--accent);background:var(--accent-light);padding:16px 20px;border-radius:0 10px 10px 0;margin:24px 0;color:var(--text)}
.article-content blockquote p{margin-bottom:0}
.article-content img{border-radius:var(--radius-lg);margin:24px 0;width:100%;object-fit:cover}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}
.article-content table th,.article-content table td{border:1px solid var(--border);padding:10px 14px;text-align:left}
.article-content table th{background:var(--primary-light);color:var(--primary);font-weight:600}
.article-content a{color:var(--primary);border-bottom:1px solid transparent;transition:all var(--tr)}
.article-content a:hover{border-bottom-color:var(--primary)}
.article-content strong{color:var(--text);font-weight:700}
.article-content .aligncenter{display:block;margin-left:auto;margin-right:auto}
.article-content .wp-caption{max-width:100%}
.article-content .wp-caption-text{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}

/* ===== 标签区 ===== */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;padding-top:24px;border-top:1px solid var(--border)}
.tag{display:inline-flex;align-items:center;padding:5px 16px;border-radius:999px;background:var(--bg);border:1px solid var(--border);font-size:13px;color:var(--text-2);transition:all var(--tr)}
.tag:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}

/* ===== 相关推荐 ===== */
.related-section{margin-bottom:48px}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.section-head h2{font-size:26px;font-weight:700;color:var(--text)}
.section-head .more{font-size:14px;color:var(--primary);font-weight:500}
.section-head .more:hover{color:var(--primary-dark)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:32px}
.related-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--tr);display:block}
.related-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:transparent}
.related-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg)}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.related-card:hover .related-thumb img{transform:scale(1.05)}
.related-body{padding:18px 20px}
.related-body .badge{margin-bottom:8px}
.related-body h3{font-size:16px;font-weight:600;color:var(--text);line-height:1.5;margin-top:8px}
.related-body h3:hover{color:var(--primary)}
.back-home{display:flex;align-items:center;justify-content:flex-start;gap:16px;flex-wrap:wrap}

/* ===== 返回 / 空状态 ===== */
.not-found{text-align:center;padding:120px 24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow)}
.not-found-icon{font-size:64px;display:block;margin-bottom:16px}
.not-found h1{font-size:32px;font-weight:800;color:var(--text);margin-bottom:12px}
.not-found p{color:var(--text-2);margin-bottom:32px;font-size:16px}

/* ===== Footer ===== */
.site-footer{background:#142433;color:#A9B7C6;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-brand p{font-size:14px;line-height:1.7;margin-top:16px;max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#A9B7C6;font-size:14px;transition:color var(--tr)}
.footer-col a:hover{color:#fff}
.footer-contact li{display:flex;align-items:center;gap:8px;font-size:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.footer-bottom span{font-size:13px;color:#7C8A9A}
.legal-links{display:flex;gap:20px}
.legal-links a{font-size:13px;color:#7C8A9A}
.legal-links a:hover{color:#fff}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .article-card{padding:36px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .header-top{height:56px}
  .header-search{display:none}
  .header-cta .btn{padding:8px 16px;font-size:13px}
  .nav-tabs{height:44px}
  .article-main{padding:8px 0 40px}
  .article-card{padding:24px;margin-bottom:32px}
  .article-header h1{font-size:28px}
  .article-desc{font-size:15px}
  .article-content p,.article-content ul,.article-content ol{font-size:15px}
  .breadcrumb{padding:16px 0 8px}
  .related-grid{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .logo-text{font-size:18px}
  .article-header h1{font-size:24px}
  .article-card{padding:16px}
  .article-cover{margin-bottom:24px}
  .article-content h2{font-size:22px}
  .back-home{flex-direction:column;align-items:stretch}
  .back-home .btn{width:100%}
  .not-found{padding:80px 16px}
}

/* roulang page: category1 */
:root {
      --primary: #1B6EF3;
      --primary-light: #EAF2FE;
      --primary-dark: #1558C4;
      --accent: #F2652A;
      --accent-light: #FDE8DE;
      --bg: #F7F9FC;
      --surface: #FFFFFF;
      --border: #E3E9F2;
      --text: #142433;
      --text-secondary: #4E6074;
      --text-muted: #8A9BAE;
      --success: #16A34A;
      --danger: #DC2626;
      --radius-lg: 16px;
      --radius-md: 10px;
      --radius-sm: 8px;
      --shadow-card: 0 4px 20px rgba(20, 36, 51, 0.06);
      --shadow-hover: 0 12px 32px rgba(20, 36, 51, 0.12);
      --transition: 0.2s ease;
      --container: 1200px;
      --section-pad: 96px;
    }

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

    html {
      scroll-behavior: smooth;
    }

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

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

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

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

    ul,
    ol {
      list-style: none;
    }

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

    input {
      font-family: inherit;
      outline: none;
    }

    h1,
    h2,
    h3,
    h4 {
      line-height: 1.3;
      color: var(--text);
    }

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

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

    .section-head {
      max-width: 680px;
      margin-bottom: 48px;
    }

    .section-head .section-tag {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 999px;
      margin-bottom: 14px;
    }

    .section-head h2 {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 12px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 24px;
      border-radius: var(--radius-md);
      font-size: 15px;
      font-weight: 600;
      line-height: 1.4;
      transition: all var(--transition);
      border: 1px solid transparent;
    }

    .btn:hover {
      text-decoration: none;
    }

    .btn-accent {
      background: var(--accent);
      color: #fff;
      border-color: var(--accent);
      box-shadow: 0 4px 14px rgba(242, 101, 42, 0.28);
    }

    .btn-accent:hover {
      background: #E04E1A;
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(242, 101, 42, 0.32);
    }

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

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

    .btn-lg {
      padding: 15px 34px;
      font-size: 16px;
      border-radius: 12px;
    }

    .btn-sm {
      padding: 8px 16px;
      font-size: 13px;
      border-radius: 8px;
    }

    .btn:focus-visible {
      outline: 3px solid rgba(27, 110, 243, 0.25);
      outline-offset: 2px;
    }

    a:focus-visible {
      outline: 3px solid rgba(27, 110, 243, 0.25);
      outline-offset: 2px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
    }

    .header-top {
      background: var(--surface);
      border-bottom: 1px solid var(--border);
    }

    .header-row {
      display: flex;
      align-items: center;
      gap: 24px;
      height: 64px;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      flex-shrink: 0;
    }

    .logo-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--accent), #F6A05C);
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: #fff;
      box-shadow: 0 4px 10px rgba(242, 101, 42, 0.25);
    }

    .logo-text {
      font-size: 20px;
      font-weight: 800;
      color: var(--text);
      letter-spacing: -0.3px;
      white-space: nowrap;
    }

    .logo-text span {
      color: var(--accent);
      font-weight: 800;
    }

    .header-search {
      flex: 1;
      max-width: 340px;
      display: flex;
      align-items: center;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 0 12px;
      height: 40px;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .header-search:focus-within {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(27, 110, 243, 0.15);
    }

    .header-search .search-icon {
      width: 18px;
      height: 18px;
      color: var(--text-muted);
      flex-shrink: 0;
      margin-right: 8px;
    }

    .header-search input {
      flex: 1;
      border: none;
      background: transparent;
      font-size: 14px;
      color: var(--text);
      height: 100%;
    }

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

    .header-actions {
      margin-left: auto;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .search-mobile {
      display: none;
      width: 40px;
      height: 40px;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: var(--surface);
      align-items: center;
      justify-content: center;
      color: var(--text-secondary);
    }

    .search-mobile svg {
      width: 20px;
      height: 20px;
    }

    .header-tabs {
      background: var(--surface);
      border-bottom: 1px solid var(--border);
    }

    .nav-tabs {
      display: flex;
      align-items: center;
      gap: 8px;
      overflow-x: auto;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }

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

    .nav-tabs a {
      display: inline-flex;
      align-items: center;
      padding: 8px 18px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-secondary);
      background: transparent;
      white-space: nowrap;
      transition: all var(--transition);
      margin: 8px 0;
    }

    .nav-tabs a:hover {
      background: var(--primary-light);
      color: var(--primary);
    }

    .nav-tabs a.active {
      background: var(--accent);
      color: #fff;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(242, 101, 42, 0.3);
    }

    .category-hero {
      background: var(--primary-light);
      position: relative;
      overflow: hidden;
      padding: 80px 0;
    }

    .category-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: url("/assets/images/backpic/back-1.webp") center center / cover no-repeat;
      opacity: 0.12;
      pointer-events: none;
    }

    .category-hero::after {
      content: "";
      position: absolute;
      right: -80px;
      top: -80px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(242, 101, 42, 0.16) 0%, rgba(242, 101, 42, 0) 70%);
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      display: flex;
      align-items: center;
      gap: 60px;
    }

    .hero-content {
      flex: 1 1 55%;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 7px 14px;
      font-size: 13px;
      font-weight: 600;
      color: var(--accent);
      box-shadow: var(--shadow-card);
      margin-bottom: 22px;
    }

    .hero-content h1 {
      font-size: 44px;
      font-weight: 800;
      letter-spacing: -1px;
      margin-bottom: 18px;
    }

    .hero-content .hero-desc {
      font-size: 16px;
      color: var(--text-secondary);
      max-width: 520px;
      line-height: 1.8;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 28px;
    }

    .hero-trust {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
    }

    .hero-trust span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      color: var(--text-secondary);
      font-weight: 500;
    }

    .hero-trust i {
      display: inline-flex;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--success);
      color: #fff;
      align-items: center;
      justify-content: center;
      font-style: normal;
      font-size: 12px;
      font-weight: 700;
    }

    .hero-visual {
      flex: 1 1 45%;
      position: relative;
    }

    .hero-img-wrap {
      position: relative;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 16px 48px rgba(20, 36, 51, 0.16);
      border: 4px solid #fff;
      aspect-ratio: 16 / 10;
    }

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

    .float-card {
      position: absolute;
      background: rgba(255, 255, 255, 0.94);
      border-radius: 12px;
      box-shadow: 0 8px 24px rgba(20, 36, 51, 0.14);
      padding: 10px 16px;
      font-size: 13px;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;
      backdrop-filter: blur(6px);
    }

    .float-card-1 {
      left: 18px;
      bottom: 22px;
    }

    .float-card-2 {
      right: 18px;
      top: 22px;
      color: var(--primary);
    }

    .float-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--success);
      position: relative;
    }

    .float-dot::after {
      content: "";
      position: absolute;
      inset: -4px;
      border-radius: 50%;
      background: rgba(22, 163, 74, 0.25);
      animation: pulse-dot 1.6s ease-in-out infinite;
    }

    .float-icon {
      font-size: 18px;
    }

    @keyframes pulse-dot {
      0%,
      100% {
        transform: scale(0.8);
        opacity: 0.6;
      }
      50% {
        transform: scale(1.4);
        opacity: 0;
      }
    }

    .feature-section {
      background: var(--surface);
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 24px;
    }

    .feature-grid .feature-card:nth-child(even) {
      transform: translateY(28px);
    }

    .feature-card {
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: var(--surface);
      padding: 32px;
      box-shadow: var(--shadow-card);
      transition: box-shadow var(--transition), transform var(--transition);
    }

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

    .feature-grid .feature-card:nth-child(even):hover {
      transform: translateY(24px);
    }

    .feature-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: var(--accent-light);
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
    }

    .feature-card h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .feature-card p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

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

    .filter-pills {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      margin-bottom: 36px;
    }

    .filter-pills .pill {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: var(--surface);
      font-size: 14px;
      font-weight: 600;
      color: var(--text-secondary);
      transition: all var(--transition);
    }

    .filter-pills .pill:hover {
      border-color: var(--primary);
      background: var(--primary-light);
      color: var(--primary);
    }

    .filter-pills .pill.active {
      background: var(--primary);
      border-color: var(--primary);
      color: #fff;
      box-shadow: 0 4px 12px rgba(27, 110, 243, 0.25);
    }

    .content-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 24px;
    }

    .content-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: box-shadow var(--transition), transform var(--transition);
      display: flex;
      flex-direction: column;
    }

    .content-card:nth-child(even) {
      transform: translateY(28px);
    }

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

    .content-card:nth-child(even):hover {
      transform: translateY(24px);
    }

    .card-media {
      position: relative;
      display: block;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: var(--primary-light);
    }

    .card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .content-card:hover .card-media img {
      transform: scale(1.04);
    }

    .card-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(20, 36, 51, 0.78);
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      padding: 5px 12px;
      border-radius: 999px;
      backdrop-filter: blur(4px);
    }

    .card-body {
      padding: 20px 22px 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .card-body h3 {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
    }

    .card-body h3 a {
      color: var(--text);
      transition: color var(--transition);
    }

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

    .card-body p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 18px;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

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

    .card-meta a {
      font-weight: 600;
      font-size: 13px;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

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

    .process-section {
      background: var(--surface);
    }

    .process-wrap {
      background: var(--primary-light);
      border-radius: 24px;
      padding: 60px;
    }

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

    .process-steps {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 24px;
    }

    .process-step {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-card);
      position: relative;
      border: 1px solid var(--border);
      transition: box-shadow var(--transition), transform var(--transition);
    }

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

    .step-num {
      display: inline-block;
      font-size: 13px;
      font-weight: 800;
      color: var(--accent);
      background: var(--accent-light);
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 16px;
    }

    .process-step h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .process-step p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    .stats-band {
      background: #142433;
      padding: 64px 0;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 32px;
      text-align: center;
    }

    .stat-item strong {
      display: block;
      font-size: 36px;
      font-weight: 800;
      color: var(--accent);
      line-height: 1.2;
      margin-bottom: 8px;
    }

    .stat-item span {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.72);
    }

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

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

    .faq-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 14px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: box-shadow var(--transition);
    }

    .faq-item[open] {
      box-shadow: var(--shadow-card);
    }

    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 0 22px;
      min-height: 48px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      cursor: pointer;
      list-style: none;
      transition: color var(--transition);
    }

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

    .faq-item summary::after {
      content: "+";
      font-size: 22px;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform var(--transition), color var(--transition);
      line-height: 1;
    }

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

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

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

    .faq-answer {
      background: var(--bg);
      padding: 16px 22px 20px;
      font-size: 15px;
      color: var(--text-secondary);
      border-top: 1px solid var(--border);
    }

    .faq-answer p {
      margin: 0;
    }

    .cta-band {
      background: var(--primary-light);
      padding: 72px 0;
    }

    .cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      flex-wrap: wrap;
    }

    .cta-inner h2 {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .cta-inner p {
      color: var(--text-secondary);
      font-size: 15px;
    }

    .site-footer {
      background: #142433;
      color: rgba(255, 255, 255, 0.72);
      padding: 60px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 44px;
    }

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

    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      margin-top: 14px;
      max-width: 320px;
      color: rgba(255, 255, 255, 0.62);
    }

    .footer-col h4 {
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 18px;
    }

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

    .footer-col ul li a {
      color: rgba(255, 255, 255, 0.66);
      font-size: 14px;
      transition: color var(--transition);
    }

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

    .footer-contact li {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.66);
    }

    .footer-contact li span {
      flex-shrink: 0;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 20px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.45);
    }

    .legal-links {
      display: flex;
      gap: 18px;
    }

    .legal-links a {
      color: rgba(255, 255, 255, 0.45);
      font-size: 13px;
    }

    .legal-links a:hover {
      color: #fff;
    }

    @media (max-width: 1024px) {
      .hero-inner {
        gap: 36px;
      }

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

      .process-wrap {
        padding: 40px;
      }

      .process-steps {
        gap: 16px;
      }

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

    @media (max-width: 768px) {
      :root {
        --section-pad: 56px;
      }

      .header-search {
        display: none;
      }

      .search-mobile {
        display: inline-flex;
      }

      .header-row {
        gap: 12px;
      }

      .header-actions .btn-sm {
        font-size: 13px;
        padding: 7px 14px;
      }

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

      .hero-inner {
        flex-direction: column;
        gap: 40px;
      }

      .hero-content {
        flex: 1 1 auto;
        width: 100%;
      }

      .hero-visual {
        width: 100%;
      }

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

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

      .feature-grid .feature-card:nth-child(even) {
        transform: none;
      }

      .feature-grid .feature-card:nth-child(even):hover {
        transform: none;
      }

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

      .content-card:nth-child(even) {
        transform: none;
      }

      .content-card:nth-child(even):hover {
        transform: translateY(-4px);
      }

      .process-wrap {
        padding: 28px 20px;
      }

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

      .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 24px;
      }

      .cta-inner {
        flex-direction: column;
        align-items: flex-start;
      }

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

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

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

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

      .logo-text {
        font-size: 17px;
      }

      .logo-icon {
        width: 28px;
        height: 28px;
        font-size: 15px;
      }

      .header-actions .btn-sm {
        font-size: 12px;
        padding: 6px 12px;
      }

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

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

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

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

      .section-head h2 {
        font-size: 24px;
      }

      .feature-card {
        padding: 24px;
      }

      .card-body {
        padding: 18px;
      }

      .float-card {
        font-size: 12px;
        padding: 8px 12px;
      }

      .float-card-2 {
        top: 12px;
        right: 12px;
      }

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

      .stat-item strong {
        font-size: 28px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      * {
        animation: none !important;
        transition: none !important;
      }
    }

/* roulang page: category2 */
:root {
      --primary: #1B6EF3;
      --primary-light: #EAF2FE;
      --primary-dark: #1558C4;
      --accent: #F2652A;
      --accent-light: #FDE8DE;
      --bg: #F7F9FC;
      --surface: #FFFFFF;
      --border: #E3E9F2;
      --text: #142433;
      --text-secondary: #4E6074;
      --text-muted: #8A9BAE;
      --success: #16A34A;
      --danger: #DC2626;
      --radius-lg: 16px;
      --radius-md: 10px;
      --radius-sm: 8px;
      --shadow: 0 4px 20px rgba(20,36,51,0.06);
      --shadow-hover: 0 12px 32px rgba(20,36,51,0.12);
      --transition: 0.2s ease;
      --container-max: 1200px;
      --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "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-family);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

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

    input {
      font-family: inherit;
    }

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

    .site-header {
      position: stic;
      top: 0;
      z-index: 100;
      background: var(--surface);
    }

    .header-top {
      height: 64px;
      background: var(--surface);
      border-bottom: 1px solid var(--border);
    }

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

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

    .logo-icon {
      font-size: 26px;
      line-height: 1;
    }

    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--text);
      letter-spacing: 0.02em;
    }

    .logo-text span {
      color: var(--accent);
    }

    .search-box {
      position: relative;
      width: 280px;
      flex-shrink: 0;
    }

    .search-box svg {
      position: absolute;
      left: 14px;
      top: 50%;
      transform: translateY(-50%);
      width: 18px;
      height: 18px;
      color: var(--text-muted);
      pointer-events: none;
    }

    .search-box input {
      width: 100%;
      height: 40px;
      border: 1px solid var(--border);
      border-radius: 999px;
      background: var(--bg);
      padding: 0 16px 0 42px;
      font-size: 14px;
      color: var(--text);
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

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

    .search-box input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(27, 110, 243, 0.15);
      background: var(--surface);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-md);
      font-weight: 600;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
      white-space: nowrap;
    }

    .btn:focus-visible {
      outline: 3px solid rgba(27, 110, 243, 0.25);
      outline-offset: 2px;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
      padding: 12px 28px;
      border-radius: var(--radius-md);
      font-size: 15px;
      border: 2px solid var(--accent);
    }

    .btn-primary:hover {
      background: #e05a22;
      border-color: #e05a22;
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(242, 101, 42, 0.3);
    }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      padding: 12px 28px;
      border-radius: var(--radius-md);
      font-size: 15px;
      border: 2px solid var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(27, 110, 243, 0.15);
    }

    .header-download {
      padding: 10px 24px;
      font-size: 14px;
    }

    .nav-tabs {
      background: var(--bg);
      border-bottom: 1px solid var(--border);
    }

    .nav-tabs-inner {
      height: 48px;
      display: flex;
      align-items: center;
      gap: 4px;
      overflow-x: auto;
      scrollbar-width: none;
    }

    .nav-tabs-inner::-webkit-scrollbar {
      display: none;
    }

    .nav-tabs a {
      flex-shrink: 0;
      padding: 0 20px;
      height: 48px;
      display: inline-flex;
      align-items: center;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-secondary);
      border-bottom: 2px solid transparent;
      transition: color 0.2s ease, border-color 0.2s ease;
      position: relative;
    }

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

    .nav-tabs a.active {
      color: var(--accent);
      border-bottom-color: var(--accent);
      font-weight: 600;
    }

    .category-hero {
      background: linear-gradient(135deg, #F0F6FF 0%, #EAF2FE 60%, #FDF1EB 100%);
      padding: 72px 0 56px;
      position: relative;
      overflow: hidden;
    }

    .category-hero::after {
      content: '';
      position: absolute;
      right: -80px;
      top: -80px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: rgba(242, 101, 42, 0.08);
      pointer-events: none;
    }

    .category-hero-inner {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 56px;
      align-items: center;
      position: relative;
      z-index: 1;
    }

    .hero-tag {
      display: inline-block;
      background: var(--accent-light);
      color: var(--accent);
      border-radius: 999px;
      padding: 4px 16px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .category-hero h1 {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 14px;
      letter-spacing: 0.01em;
    }

    .category-hero .hero-desc {
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-secondary);
      max-width: 540px;
      margin-bottom: 28px;
    }

    .hero-filters {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .hero-filters a {
      padding: 7px 18px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: var(--surface);
      font-size: 13px;
      font-weight: 500;
      color: var(--text-secondary);
      transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .hero-filters a:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-light);
    }

    .hero-filters a.active {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      box-shadow: 0 4px 12px rgba(27, 110, 243, 0.25);
    }

    .hero-visual {
      position: relative;
    }

    .hero-visual img {
      width: 100%;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-hover);
      border: 4px solid rgba(255, 255, 255, 0.8);
      transform: rotate(1deg);
    }

    .hero-visual::before {
      content: '';
      position: absolute;
      inset: -12px auto auto -12px;
      width: 80px;
      height: 80px;
      border-radius: 16px;
      background: linear-gradient(135deg, var(--accent), #FF9A66);
      opacity: 0.15;
      z-index: -1;
    }

    .hero-badge {
      position: absolute;
      bottom: -14px;
      right: -10px;
      background: var(--accent);
      color: #fff;
      font-size: 13px;
      font-weight: 600;
      padding: 8px 18px;
      border-radius: 999px;
      box-shadow: 0 6px 20px rgba(242, 101, 42, 0.35);
      transform: rotate(2deg);
    }

    .update-banner {
      padding: 24px 0 0;
    }

    .update-banner-inner {
      display: flex;
      align-items: center;
      gap: 16px;
      background: var(--accent-light);
      border: 1px solid #f5c8b2;
      border-radius: 14px;
      padding: 14px 20px;
      flex-wrap: wrap;
    }

    .banner-badge {
      background: var(--accent);
      color: #fff;
      padding: 3px 12px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 700;
      flex-shrink: 0;
    }

    .banner-text {
      font-size: 14px;
      color: var(--text);
      flex: 1;
      min-width: 220px;
    }

    .banner-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--accent);
      white-space: nowrap;
    }

    .banner-link:hover {
      color: #d04e1e;
    }

    .content-grid {
      padding: 72px 0 56px;
    }

    .section-header {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 32px;
      flex-wrap: wrap;
    }

    .section-header.center {
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .section-header h2 {
      font-size: 30px;
      font-weight: 700;
      color: var(--text);
      letter-spacing: 0.01em;
    }

    .section-desc {
      font-size: 14px;
      color: var(--text-muted);
    }

    .grid-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .content-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
      display: flex;
      flex-direction: column;
    }

    .content-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: #d0dbe8;
    }

    .card-image-wrap {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: var(--primary-light);
    }

    .card-image-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .content-card:hover .card-image-wrap img {
      transform: scale(1.04);
    }

    .card-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(20, 36, 51, 0.75);
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      padding: 3px 12px;
      border-radius: 999px;
      backdrop-filter: blur(4px);
    }

    .card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 10px;
    }

    .card-tag {
      background: var(--primary-light);
      color: var(--primary);
      font-size: 12px;
      font-weight: 500;
      padding: 2px 10px;
      border-radius: 999px;
    }

    .card-tag.accent-tag {
      background: var(--accent-light);
      color: var(--accent);
    }

    .card-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .card-title {
      font-size: 18px;
      font-weight: 600;
      line-height: 1.4;
      color: var(--text);
      margin-bottom: 8px;
      transition: color 0.2s ease;
    }

    .content-card:hover .card-title {
      color: var(--primary);
    }

    .card-excerpt {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.65;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex: 1;
    }

    .card-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 16px;
      padding-top: 14px;
      border-top: 1px solid var(--border);
      font-size: 13px;
      color: var(--text-muted);
    }

    .card-link {
      font-weight: 600;
      color: var(--primary);
      font-size: 14px;
    }

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

    .timeline-section {
      background: var(--surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 72px 0;
    }

    .timeline {
      max-width: 800px;
      margin: 0 auto;
      position: relative;
      padding-left: 32px;
    }

    .timeline::before {
      content: '';
      position: absolute;
      left: 0;
      top: 6px;
      bottom: 4px;
      width: 2px;
      background: linear-gradient(to bottom, var(--primary-light), var(--border));
    }

    .timeline-item {
      position: relative;
      padding-bottom: 40px;
    }

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

    .timeline-item::before {
      content: '';
      position: absolute;
      left: -37px;
      top: 4px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--surface);
      border: 4px solid var(--primary);
      box-shadow: 0 0 0 4px var(--primary-light);
    }

    .timeline-item:nth-child(2)::before {
      border-color: var(--accent);
      box-shadow: 0 0 0 4px var(--accent-light);
    }

    .timeline-version {
      font-size: 14px;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 2px;
    }

    .timeline-date {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .timeline-item h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 6px;
    }

    .timeline-item p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.65;
      max-width: 560px;
    }

    .timeline-item ul {
      margin-top: 6px;
      list-style: none;
    }

    .timeline-item ul li {
      position: relative;
      padding-left: 18px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
      margin-bottom: 4px;
    }

    .timeline-item ul li::before {
      content: '';
      position: absolute;
      left: 0;
      top: 9px;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary-light);
      border: 1px solid var(--primary);
    }

    .subscribe-cta {
      padding: 72px 0;
    }

    .cta-box {
      background: linear-gradient(135deg, var(--primary-light) 0%, #F0F6FF 50%, var(--accent-light) 100%);
      border-radius: 24px;
      padding: 56px 40px;
      text-align: center;
      border: 1px solid rgba(255, 255, 255, 0.6);
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .cta-box::before {
      content: '';
      position: absolute;
      left: 30px;
      bottom: -40px;
      width: 120px;
      height: 120px;
      border-radius: 50%;
      background: rgba(242, 101, 42, 0.08);
    }

    .cta-box h2 {
      font-size: 32px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 10px;
      letter-spacing: 0.01em;
    }

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

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

    .faq-section {
      padding: 72px 0 88px;
    }

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

    .faq-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 14px;
      margin-bottom: 16px;
      overflow: hidden;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .faq-item.active {
      border-color: var(--primary-light);
      box-shadow: var(--shadow);
    }

    .faq-question {
      width: 100%;
      height: 56px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 20px;
      font-size: 16px;
      font-weight: 500;
      color: var(--text);
      background: transparent;
      border: none;
      text-align: left;
      transition: color 0.2s ease;
    }

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

    .faq-icon {
      width: 28px;
      height: 28px;
      flex-shrink: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: var(--bg);
      font-size: 18px;
      color: var(--text-muted);
      transition: background 0.2s ease, color 0.2s ease, transform 0.3s ease;
    }

    .faq-item.active .faq-icon {
      background: var(--primary-light);
      color: var(--primary);
      transform: rotate(45deg);
    }

    .faq-answer {
      display: none;
      padding: 0 20px 18px;
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.7;
      background: var(--bg);
      border-top: 1px solid var(--border);
      margin: 0;
    }

    .faq-item.active .faq-answer {
      display: block;
      padding-top: 16px;
    }

    .site-footer {
      background: #142433;
      color: #c8d3e0;
      padding: 64px 0 24px;
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      color: #9aabbf;
      max-width: 340px;
    }

    .footer-grid .logo-text {
      color: #fff;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 16px;
    }

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

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

    .footer-col ul a {
      color: #9aabbf;
      transition: color 0.2s ease, padding-left 0.2s ease;
    }

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

    .footer-contact li {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #9aabbf;
    }

    .footer-contact span {
      font-size: 16px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      font-size: 13px;
      color: #7e90a5;
    }

    .legal-links {
      display: flex;
      gap: 20px;
    }

    .legal-links a {
      color: #7e90a5;
    }

    .legal-links a:hover {
      color: #fff;
    }

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

      .category-hero-inner {
        grid-template-columns: 1fr 0.9fr;
        gap: 32px;
      }

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

      .search-box {
        width: 220px;
      }

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

    @media (max-width: 768px) {
      .category-hero {
        padding: 48px 0 40px;
      }

      .category-hero-inner {
        grid-template-columns: 1fr;
        gap: 28px;
      }

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

      .hero-visual {
        max-width: 420px;
      }

      .header-top-inner {
        gap: 12px;
      }

      .search-box {
        display: none;
      }

      .header-download {
        padding: 8px 18px;
        font-size: 13px;
      }

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

      .section-header {
        flex-direction: column;
        align-items: flex-start;
      }

      .section-header.center {
        align-items: center;
      }

      .timeline {
        padding-left: 24px;
      }

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

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

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

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

      .nav-tabs a {
        padding: 0 16px;
      }
    }

    @media (max-width: 640px) {
      .container {
        padding: 0 16px;
      }

      .logo-text {
        font-size: 18px;
      }

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

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

      .hero-filters {
        gap: 8px;
      }

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

      .update-banner-inner {
        padding: 12px 16px;
        gap: 10px;
      }

      .banner-text {
        font-size: 13px;
        min-width: 180px;
      }

      .section-header h2 {
        font-size: 24px;
      }

      .card-title {
        font-size: 17px;
      }

      .timeline-item h3 {
        font-size: 16px;
      }

      .cta-box {
        padding: 32px 16px;
      }

      .cta-box h2 {
        font-size: 22px;
      }

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

      .faq-question {
        font-size: 15px;
        height: auto;
        padding: 14px 16px;
      }

      .faq-answer {
        font-size: 14px;
        padding: 0 16px 14px;
      }

      .faq-item.active .faq-answer {
        padding-top: 12px;
      }
    }

/* roulang page: category3 */
:root {
      --primary: #1B6EF3;
      --primary-light: #EAF2FE;
      --primary-dark: #1558C4;
      --accent: #F2652A;
      --accent-light: #FDE8DE;
      --bg: #F7F9FC;
      --surface: #FFFFFF;
      --border: #E3E9F2;
      --text: #142433;
      --text-secondary: #4E6074;
      --text-muted: #8A9BAE;
      --success: #16A34A;
      --danger: #DC2626;
      --radius-lg: 16px;
      --radius-md: 10px;
      --radius-sm: 8px;
      --shadow-sm: 0 4px 20px rgba(20, 36, 51, 0.06);
      --shadow-lg: 0 12px 32px rgba(20, 36, 51, 0.12);
      --transition: 0.2s ease;
      --container: 1200px;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      font-size: 16px;
      line-height: 1.7;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; transition: color var(--transition); }
    button { font-family: inherit; border: none; background: none; cursor: pointer; }
    input { font-family: inherit; }
    ul { list-style: none; }
    a:focus-visible, button:focus-visible, input:focus-visible {
      outline: 3px solid rgba(27, 110, 243, 0.25);
      outline-offset: 2px;
    }

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

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 24px;
      border-radius: var(--radius-md);
      font-size: 15px;
      font-weight: 600;
      line-height: 1.4;
      transition: all var(--transition);
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(242, 101, 42, 0.3); }
    .btn-primary:hover { background: #E15722; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(242, 101, 42, 0.35); }
    .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(242, 101, 42, 0.3); }
    .btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
    .btn-outline:hover { background: var(--primary-light); }
    .btn-outline:active { background: #D9E8FD; }
    .btn-sm { padding: 8px 18px; font-size: 14px; border-radius: 8px; }
    .btn-block { width: 100%; }
    .btn i { font-size: 14px; }

    /* ===== Header ===== */
    .site-header { position: sticky; top: 0; z-index: 100; }
    .header-top { background: #fff; border-bottom: 1px solid var(--border); height: 64px; }
    .header-top-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 24px; }
    .logo { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; }
    .logo-icon { font-size: 24px; line-height: 1; }
    .logo-text { font-size: 20px; font-weight: 800; color: var(--text); letter-spacing: -0.2px; }
    .logo-text span { color: var(--accent); }
    .header-search {
      display: flex; align-items: center; gap: 10px;
      background: var(--bg); border: 1px solid var(--border);
      border-radius: 999px; padding: 0 16px;
      width: 280px; height: 40px; transition: border-color var(--transition);
    }
    .header-search:hover { border-color: #C6D4E6; }
    .header-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(27, 110, 243, 0.15); }
    .header-search i { color: var(--text-muted); font-size: 14px; }
    .header-search input { border: none; background: transparent; outline: none; flex: 1; font-size: 14px; color: var(--text); }
    .header-search input::placeholder { color: var(--text-muted); }
    .header-actions { display: flex; align-items: center; gap: 12px; }
    .search-toggle { display: none; font-size: 18px; color: var(--text); width: 40px; height: 40px; border-radius: 10px; align-items: center; justify-content: center; }
    .search-toggle:hover { background: var(--bg); }

    .header-bottom { background: var(--bg); border-bottom: 1px solid var(--border); }
    .nav-tabs { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; height: 48px; align-items: center; }
    .nav-tabs::-webkit-scrollbar { display: none; }
    .nav-tabs a {
      display: inline-flex; align-items: center; padding: 0 20px;
      height: 32px; border-radius: 999px;
      font-size: 14px; font-weight: 600; color: var(--text-secondary);
      white-space: nowrap; transition: all var(--transition); flex-shrink: 0;
    }
    .nav-tabs a:hover { color: var(--primary); background: #fff; }
    .nav-tabs a.active { background: var(--accent); color: #fff; box-shadow: 0 2px 10px rgba(242, 101, 42, 0.25); }

    /* ===== Hero ===== */
    .page-hero { background: #F0F6FF; padding: 72px 0 64px; position: relative; overflow: hidden; }
    .page-hero::before {
      content: ''; position: absolute; width: 420px; height: 420px; border-radius: 50%;
      background: radial-gradient(circle, rgba(242, 101, 42, 0.08) 0%, transparent 70%);
      top: -120px; right: -80px; pointer-events: none;
    }
    .page-hero::after {
      content: ''; position: absolute; width: 260px; height: 260px; border-radius: 50%;
      background: radial-gradient(circle, rgba(27, 110, 243, 0.07) 0%, transparent 70%);
      bottom: -60px; left: 0; pointer-events: none;
    }
    .hero-inner { display: flex; align-items: center; gap: 60px; position: relative; z-index: 1; }
    .hero-content { flex: 1 1 60%; }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--accent-light); color: var(--accent);
      padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
      margin-bottom: 20px;
    }
    .page-hero h1 { font-size: 40px; line-height: 1.3; font-weight: 800; color: var(--text); margin-bottom: 16px; }
    .page-hero .hero-sub { font-size: 16px; color: var(--text-secondary); max-width: 520px; margin-bottom: 28px; line-height: 1.8; }
    .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
    .hero-stats { display: flex; gap: 40px; }
    .stat strong { display: block; font-size: 26px; font-weight: 800; color: var(--text); line-height: 1.2; }
    .stat span { font-size: 13px; color: var(--text-muted); }
    .hero-visual { flex: 1 1 40%; position: relative; }
    .hero-visual img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); object-fit: cover; width: 100%; aspect-ratio: 4/3; }
    .visual-badge {
      position: absolute; top: 16px; right: 16px;
      background: var(--accent); color: #fff;
      padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
      box-shadow: 0 4px 12px rgba(242, 101, 42, 0.35);
    }

    /* ===== Section ===== */
    .section { padding: 96px 0; }
    .section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
    .section-tag { display: inline-block; font-size: 13px; font-weight: 700; color: var(--primary); letter-spacing: 1px; margin-bottom: 8px; text-transform: uppercase; }
    .section-head h2 { font-size: 30px; font-weight: 800; color: var(--text); margin-bottom: 12px; line-height: 1.3; }
    .section-head p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }

    /* ===== Platform Cards ===== */
    .platform-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .platform-card {
      background: var(--surface); border: 1px solid var(--border);
      border-radius: var(--radius-lg); padding: 32px;
      box-shadow: var(--shadow-sm); transition: all var(--transition);
      position: relative; overflow: hidden;
    }
    .platform-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--icon-color, var(--primary)); }
    .platform-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .platform-icon {
      width: 56px; height: 56px; border-radius: 14px;
      display: flex; align-items: center; justify-content: center;
      background: var(--icon-color, var(--primary)); color: #fff; font-size: 24px;
      margin-bottom: 20px;
    }
    .platform-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
    .platform-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
    .platform-card ul { margin-bottom: 20px; }
    .platform-card ul li { font-size: 14px; color: var(--text-secondary); padding: 4px 0; display: flex; align-items: center; gap: 8px; }
    .platform-card ul li i { color: var(--success); font-size: 13px; }
    .version-meta { display: block; text-align: center; font-size: 12px; color: var(--text-muted); margin-top: 12px; }

    /* ===== Steps ===== */
    .download-steps { background: #fff; }
    .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .step-item {
      background: var(--bg); border: 1px solid var(--border);
      border-radius: var(--radius-lg); padding: 28px 24px; text-align: center; position: relative;
    }
    .step-num { font-size: 14px; font-weight: 800; color: var(--accent); background: var(--accent-light); display: inline-block; padding: 4px 12px; border-radius: 999px; margin-bottom: 16px; }
    .step-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
    .step-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
    .step-line { display: none; }

    /* ===== Requirements ===== */
    .requirements { background: var(--bg); }
    .req-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .req-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow-sm); }
    .req-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
    .req-card-header i { font-size: 20px; color: var(--primary); }
    .req-card-header h3 { font-size: 18px; font-weight: 700; }
    .req-table { width: 100%; }
    .req-table tr { border-bottom: 1px solid var(--border); }
    .req-table tr:last-child { border-bottom: none; }
    .req-table td { padding: 10px 0; font-size: 14px; }
    .req-table td:first-child { color: var(--text-muted); width: 35%; }
    .req-table td:last-child { color: var(--text); font-weight: 500; }
    .req-card-footer { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); display: flex; gap: 12px; }

    /* ===== Guide Cards ===== */
    .guide-cards { background: #fff; }
    .card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .guide-card {
      background: var(--surface); border: 1px solid var(--border);
      border-radius: var(--radius-lg); overflow: hidden;
      box-shadow: var(--shadow-sm); transition: all var(--transition);
      display: flex; flex-direction: column;
    }
    .guide-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .guide-card-img { position: relative; aspect-ratio: 16/9; overflow: hidden; }
    .guide-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
    .guide-card:hover .guide-card-img img { transform: scale(1.04); }
    .guide-card-tag { position: absolute; top: 12px; left: 12px; background: rgba(20, 36, 51, 0.75); color: #fff; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; backdrop-filter: blur(4px); }
    .guide-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
    .guide-card-body h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; }
    .guide-card-body p { font-size: 14px; color: var(--text-secondary); flex: 1; margin-bottom: 16px; line-height: 1.6; }
    .guide-card-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
    .guide-card-link:hover { color: var(--primary-dark); }
    .guide-card-link i { font-size: 12px; }

    /* ===== FAQ ===== */
    .faq-section { background: var(--bg); }
    .faq-list { max-width: 800px; margin: 0 auto; }
    .faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; margin-bottom: 12px; overflow: hidden; transition: border-color var(--transition); }
    .faq-item:hover { border-color: #C6D4E6; }
    .faq-item.open { border-color: var(--primary); }
    .faq-question {
      width: 100%; display: flex; justify-content: space-between; align-items: center;
      padding: 0 20px; height: 56px; font-size: 15px; font-weight: 600;
      color: var(--text); text-align: left;
    }
    .faq-question:hover { color: var(--primary); }
    .faq-icon { font-size: 18px; color: var(--text-muted); transition: transform var(--transition); flex-shrink: 0; }
    .faq-item.open .faq-icon { transform: rotate(45deg); color: var(--primary); }
    .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
    .faq-answer-inner { padding: 0 20px 20px; font-size: 14px; line-height: 1.8; color: var(--text-secondary); background: var(--bg); border-radius: 0 0 12px 12px; }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--primary-light);
      padding: 64px 0 0; position: relative;
    }
    .cta-inner { text-align: center; padding-bottom: 64px; }
    .cta-inner h2 { font-size: 28px; font-weight: 800; margin-bottom: 12px; }
    .cta-inner p { font-size: 15px; color: var(--text-secondary); margin-bottom: 28px; max-width: 520px; margin-left: auto; margin-right: auto; }
    .cta-inner .btn-primary { padding: 14px 36px; font-size: 16px; }

    /* ===== Footer ===== */
    .site-footer { background: #142433; color: #A8B6C7; font-size: 14px; }
    .site-footer a { color: #A8B6C7; }
    .site-footer a:hover { color: #fff; }
    .footer-grid {
      display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 48px; padding: 64px 0 40px;
    }
    .footer-brand .logo { margin-bottom: 16px; color: #fff; }
    .footer-brand .logo-text { color: #fff; }
    .footer-brand p { line-height: 1.7; max-width: 320px; }
    .footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 20px; font-weight: 600; }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-contact li { display: flex; align-items: center; gap: 8px; }
    .footer-contact li span { font-size: 14px; }
    .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 20px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
    .legal-links { display: flex; gap: 20px; }
    .legal-links a { font-size: 13px; }

    /* ===== Scrollbar ===== */
    ::-webkit-scrollbar { width: 8px; height: 8px; }
    ::-webkit-scrollbar-track { background: var(--bg); }
    ::-webkit-scrollbar-thumb { background: #C6D4E6; border-radius: 4px; }
    ::-webkit-scrollbar-thumb:hover { background: #A8B6C7; }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .platform-grid { grid-template-columns: repeat(2, 1fr); }
      .card-grid { grid-template-columns: repeat(2, 1fr); }
      .steps-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
      .header-search { width: 220px; }
    }

    @media (max-width: 768px) {
      .section { padding: 48px 0; }
      .section-head { margin-bottom: 36px; }
      .page-hero { padding: 48px 0 40px; }
      .hero-inner { flex-direction: column; gap: 32px; }
      .hero-content { flex: 1 1 100%; }
      .page-hero h1 { font-size: 28px; }
      .hero-stats { gap: 24px; }
      .platform-grid { grid-template-columns: 1fr; }
      .card-grid { grid-template-columns: 1fr; }
      .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
      .req-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; padding: 40px 0 24px; }
      .footer-brand p { max-width: 100%; }
      .header-search { display: none; }
      .search-toggle { display: inline-flex; }
      .header-top-inner { gap: 12px; }
      .logo-text { font-size: 17px; }
      .header-actions .btn-sm { padding: 8px 14px; font-size: 13px; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }

    @media (max-width: 520px) {
      .container { padding: 0 16px; }
      .steps-grid { grid-template-columns: 1fr; }
      .hero-stats { flex-wrap: wrap; }
      .hero-actions .btn { width: 100%; }
      .req-card-footer { flex-direction: column; }
      .req-card-footer .btn { width: 100%; }
    }