/* roulang page: index */
:root {
  --c-primary: #0B6EF3;
  --c-primary-h: #2B8FFF;
  --c-primary-glow: rgba(11, 110, 243, 0.18);
  --c-accent: #22D3EE;
  --c-highlight: #FFB800;
  --c-bg0: #060D1F;
  --c-bg1: #0B1428;
  --c-glass: rgba(255, 255, 255, 0.05);
  --c-glass-border: rgba(255, 255, 255, 0.08);
  --c-title: #F5F9FF;
  --c-text: #B0C2DC;
  --c-muted: #6F84A8;
  --radius-card: 16px;
  --radius-btn: 9999px;
  --shadow-card: 0 0 0 1px rgba(255,255,255,0.06), 0 20px 50px -20px rgba(0,180,255,0.25);
  --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  background-color: var(--c-bg0);
  color: var(--c-text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--c-accent);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease, border-color 0.2s ease;
}
a:hover {
  color: var(--c-primary-h);
}
button, input, select, textarea {
  font-family: inherit;
}
.container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 16px;
  padding-right: 16px;
}
@media (min-width: 768px) {
  .container {
    padding-left: 24px;
    padding-right: 24px;
  }
}
.section {
  padding-top: 64px;
  padding-bottom: 64px;
}
@media (min-width: 768px) {
  .section {
    padding-top: 96px;
    padding-bottom: 96px;
  }
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}
.section-head .head-line {
  width: 40px;
  height: 4px;
  background: linear-gradient(90deg, var(--c-accent), transparent);
  border-radius: 2px;
}
.section-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--c-title);
  line-height: 1.3;
  letter-spacing: -0.01em;
}
@media (min-width: 768px) {
  .section-title {
    font-size: 34px;
  }
}
.glass-card {
  background: var(--c-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(90deg, #0B6EF3, #22D3EE);
  color: #fff;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-btn);
  padding: 12px 28px;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(0, 150, 255, 0.35);
  transition: all 0.3s ease;
  text-decoration: none;
  font-size: 15px;
}
.btn-primary:hover {
  box-shadow: 0 0 30px rgba(0, 150, 255, 0.5);
  transform: translateY(-1px);
  color: #fff;
}
.btn-primary:active {
  transform: translateY(0);
  filter: brightness(0.9);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  font-weight: 500;
  border-radius: var(--radius-btn);
  padding: 12px 28px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
  text-decoration: none;
  font-size: 15px;
}
.btn-secondary:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  background: rgba(34, 211, 238, 0.08);
}
.btn-secondary:active {
  transform: scale(0.98);
}
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}
.badge {
  display: inline-block;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: 999px;
  background: rgba(255, 184, 0, 0.12);
  color: var(--c-highlight);
  border: 1px solid rgba(255, 184, 0, 0.25);
}
.stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--c-highlight);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
@media (min-width: 768px) {
  .stat-number {
    font-size: 48px;
  }
}
.scrollbar-hidden::-webkit-scrollbar {
  display: none;
}
.scrollbar-hidden {
  scrollbar-width: none;
  -ms-overflow-style: none;
}
/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 13, 31, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 0 16px rgba(0, 150, 255, 0.35);
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-text .logo-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--c-title);
  letter-spacing: 0.02em;
}
.logo-text .logo-sub {
  font-size: 11px;
  font-style: italic;
  font-weight: 400;
  color: var(--c-accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.header-search {
  display: none;
  align-items: center;
  max-width: 260px;
  width: 100%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  padding: 0 14px;
  height: 40px;
  color: var(--c-muted);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.header-search:focus-within {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
}
.header-search input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--c-title);
  font-size: 14px;
  width: 100%;
  margin-left: 8px;
}
.header-search input::placeholder {
  color: #5A6E8E;
}
.header-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(90deg, #0B6EF3, #22D3EE);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  padding: 9px 20px;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 16px rgba(0, 150, 255, 0.3);
  transition: all 0.3s ease;
  white-space: nowrap;
}
.header-btn:hover {
  box-shadow: 0 0 24px rgba(0, 150, 255, 0.5);
  transform: translateY(-1px);
  color: #fff;
}
.header-btn:active {
  transform: translateY(0);
}
.nav-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 0 12px;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-row::-webkit-scrollbar {
  display: none;
}
.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
  text-decoration: none;
}
.nav-tab:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--c-title);
}
.nav-tab.active {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  box-shadow: inset 0 -2px 0 var(--c-accent);
}
.mobile-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--c-title);
  font-size: 18px;
  cursor: pointer;
  transition: background 0.2s ease;
}
.mobile-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
}
@media (min-width: 768px) {
  .header-search {
    display: flex;
  }
  .mobile-toggle {
    display: none;
  }
}
.mobile-menu {
  display: none;
  padding: 12px 0 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.mobile-menu.open {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mobile-menu a {
  padding: 12px 16px;
  border-radius: 12px;
  color: var(--c-text);
  font-size: 15px;
  transition: all 0.2s ease;
}
.mobile-menu a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--c-title);
}
.mobile-menu a.active {
  background: rgba(34, 211, 238, 0.1);
  color: var(--c-accent);
}
/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 80px 0 64px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(6, 13, 31, 0.92) 35%, rgba(6, 13, 31, 0.65) 75%, rgba(6, 13, 31, 0.55) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
@media (min-width: 1024px) {
  .hero-content {
    grid-template-columns: 3fr 2fr;
  }
  .hero {
    padding: 100px 0 80px;
  }
}
.hero-title {
  font-size: 38px;
  font-weight: 800;
  color: var(--c-title);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}
@media (min-width: 768px) {
  .hero-title {
    font-size: 48px;
  }
}
.hero-title span {
  background: linear-gradient(90deg, var(--c-accent), var(--c-primary-h));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 16px;
  color: var(--c-text);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.hero-panel {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 28px;
  box-shadow: var(--shadow-card);
}
.hero-panel-title {
  font-size: 14px;
  color: var(--c-muted);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}
.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.hero-stat-item {
  text-align: center;
}
.hero-stat-item .stat-icon {
  font-size: 20px;
  color: var(--c-accent);
  margin-bottom: 8px;
  display: block;
}
.hero-stat-item .stat-number {
  font-size: 30px;
}
@media (min-width: 768px) {
  .hero-stat-item .stat-number {
    font-size: 38px;
  }
}
.hero-stat-item .stat-label {
  font-size: 13px;
  color: var(--c-muted);
  margin-top: 4px;
}
.stat-trend {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-top: 8px;
}
.stat-trend .bar {
  width: 4px;
  height: 14px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 2px;
}
.stat-trend .bar.high {
  background: var(--c-highlight);
}
/* ===== Data Bar ===== */
.data-bar {
  padding: 24px 0 0;
  position: relative;
  z-index: 3;
  margin-top: -12px;
}
.data-bar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (min-width: 1024px) {
  .data-bar-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.data-card {
  text-align: center;
  padding: 24px 16px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.data-card:hover {
  border-color: rgba(34, 211, 238, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.2), 0 20px 50px -20px rgba(34, 211, 238, 0.25);
}
.data-card .label {
  font-size: 13px;
  color: var(--c-muted);
  margin-bottom: 6px;
}
.data-card .number {
  font-size: 32px;
  font-weight: 800;
  color: var(--c-highlight);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  text-shadow: 0 0 24px rgba(255, 184, 0, 0.25);
}
.data-card .progress {
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  margin-top: 12px;
  overflow: hidden;
}
.data-card .progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  border-radius: 3px;
}
/* ===== News Section ===== */
.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 768px) {
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .news-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.news-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.1), 0 24px 60px -20px rgba(0,180,255,0.3);
}
.news-cover-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.news-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-cover {
  transform: scale(1.05);
}
.news-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
}
.news-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.news-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-title);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.news-title a {
  color: inherit;
  transition: color 0.2s ease;
}
.news-title a:hover {
  color: var(--c-accent);
}
.news-summary {
  font-size: 14px;
  color: var(--c-text);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
  flex: 1;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: var(--c-muted);
}
.news-meta .read-more {
  color: var(--c-accent);
  font-weight: 500;
  transition: color 0.2s ease;
}
.news-meta .read-more:hover {
  color: var(--c-primary-h);
}
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.1);
  border-radius: 16px;
}
.empty-state .empty-icon {
  font-size: 40px;
  margin-bottom: 12px;
  display: block;
  opacity: 0.6;
}
.empty-state p {
  font-size: 16px;
  color: var(--c-text);
  margin-bottom: 20px;
}
/* ===== Service Grid ===== */
.service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 640px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .service-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.service-card {
  padding: 24px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  transition: all 0.3s ease;
  position: relative;
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: var(--shadow-card);
}
.service-card .service-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 211, 238, 0.1);
  color: var(--c-accent);
  margin-bottom: 16px;
  transition: all 0.3s ease;
}
.service-card:hover .service-icon {
  color: var(--c-accent);
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.3);
}
.service-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-title);
  margin-bottom: 8px;
}
.service-card p {
  font-size: 14px;
  color: var(--c-text);
  line-height: 1.65;
}
/* ===== Compare Section ===== */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) {
  .compare-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.compare-card {
  border-radius: 16px;
  padding: 28px;
}
.compare-card.dark {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.compare-card.blue {
  background: rgba(11, 110, 243, 0.12);
  border: 1px solid rgba(11, 110, 243, 0.25);
}
.compare-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--c-title);
  margin-bottom: 20px;
}
.compare-list {
  list-style: none;
}
.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  line-height: 1.6;
}
.compare-list .icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  margin-top: 2px;
}
.compare-list .icon.close {
  background: rgba(255, 77, 77, 0.15);
  color: #ff5d5d;
}
.compare-list .icon.check {
  background: rgba(34, 211, 238, 0.15);
  color: var(--c-accent);
}
.compare-result {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-top: 8px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
}
.result-tag {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  font-size: 15px;
  color: var(--c-title);
}
.result-tag .num {
  font-size: 24px;
  font-weight: 800;
  color: var(--c-highlight);
  font-variant-numeric: tabular-nums;
}
/* ===== FAQ ===== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  border-left: 3px solid rgba(34, 211, 238, 0.6);
}
.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
}
.faq-item[open] {
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.12), var(--shadow-card);
}
.faq-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-title);
  user-select: none;
}
.faq-summary::-webkit-details-marker {
  display: none;
}
.faq-summary .faq-arrow {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  transition: transform 0.2s ease;
  color: var(--c-accent);
  font-size: 12px;
}
.faq-item[open] .faq-arrow {
  transform: rotate(180deg);
}
.faq-content {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease, padding 0.25s ease;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
}
.faq-item[open] .faq-content {
  max-height: 600px;
  padding: 0 20px 20px;
}
/* ===== CTA Form ===== */
.cta-section {
  position: relative;
  border-radius: 20px;
  padding: 40px 28px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -40%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.18), transparent 70%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
@media (min-width: 768px) {
  .cta-inner {
    grid-template-columns: 3fr 2fr;
    align-items: center;
  }
  .cta-section {
    padding: 48px;
  }
}
.cta-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--c-title);
  margin-bottom: 12px;
}
.cta-desc {
  font-size: 15px;
  color: var(--c-text);
  margin-bottom: 20px;
  line-height: 1.7;
}
.cta-trust {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.cta-trust li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--c-text);
}
.cta-trust i {
  color: var(--c-accent);
}
.cta-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.form-input {
  width: 100%;
  height: 44px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 0 16px;
  color: var(--c-title);
  font-size: 14px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.form-input:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.12);
}
.form-input::placeholder {
  color: #5A6E8E;
}
.code-row {
  display: flex;
  gap: 12px;
}
.code-row .form-input {
  flex: 1;
}
.code-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--c-title);
  font-size: 14px;
  border-radius: 12px;
  padding: 0 18px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.code-btn:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}
/* ===== Footer ===== */
.site-footer {
  background: var(--c-bg1);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 48px 0 24px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 2fr;
  }
}
.footer-brand p {
  font-size: 14px;
  color: var(--c-muted);
  margin-top: 12px;
  max-width: 300px;
  line-height: 1.65;
}
.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--c-muted);
  transition: all 0.25s ease;
}
.footer-social a:hover {
  background: rgba(34, 211, 238, 0.15);
  color: var(--c-accent);
  transform: translateY(-2px);
}
.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-title);
  margin-bottom: 14px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-links a {
  font-size: 14px;
  color: var(--c-muted);
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--c-accent);
}
.footer-legal {
  font-size: 13px;
  color: var(--c-muted);
  line-height: 1.7;
}
.footer-legal a {
  color: var(--c-accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: var(--c-muted);
}

/* roulang page: category1 */
:root {
            --c-primary: #0B6EF3;
            --c-primary-h: #2B8FFF;
            --c-accent: #22D3EE;
            --c-highlight: #FFB800;
            --c-bg0: #060D1F;
            --c-bg1: #0B1428;
            --c-text-title: #F5F9FF;
            --c-text-body: #B0C2DC;
            --c-text-weak: #6F84A8;
            --c-border-glass: rgba(255, 255, 255, 0.08);
            --c-glass-bg: rgba(255, 255, 255, 0.05);
            --shadow-card: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 20px 50px -20px rgba(0, 180, 255, 0.25);
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-input: 12px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            background-color: var(--c-bg0);
            color: var(--c-text-body);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            font-variant-numeric: tabular-nums;
            overflow-x: hidden;
        }

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

        a {
            color: var(--c-text-title);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
        }

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--c-bg0);
        }

        ::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 8px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.28);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(6, 13, 31, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

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

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            box-shadow: 0 0 18px rgba(11, 110, 243, 0.5);
        }

        .logo-text {
            display: flex;
            align-items: baseline;
            gap: 5px;
        }

        .logo-name {
            font-size: 22px;
            font-weight: 800;
            color: var(--c-text-title);
            letter-spacing: 0.01em;
            line-height: 1.2;
        }

        .logo-sub {
            font-size: 11px;
            font-weight: 700;
            color: var(--c-accent);
            letter-spacing: 0.08em;
            font-style: italic;
            text-transform: uppercase;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: none;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            padding: 0 16px;
            height: 40px;
            max-width: 260px;
            width: 100%;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .search-box:focus-within {
            border-color: var(--c-accent);
            box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.18);
        }

        .search-box input {
            flex: 1;
            background: transparent;
            color: var(--c-text-title);
            font-size: 14px;
            border: none;
            outline: none;
        }

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

        .search-box i {
            color: var(--c-text-weak);
            font-size: 14px;
            margin-right: 8px;
        }

        @media (min-width: 900px) {
            .search-box {
                display: flex;
            }
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(90deg, #0B6EF3, #22D3EE);
            box-shadow: 0 0 20px rgba(0, 150, 255, 0.35);
            transition: all 0.3s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(0, 150, 255, 0.5);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.9);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--c-accent);
            outline-offset: 3px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--c-text-title);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            border-color: var(--c-accent);
            color: var(--c-accent);
            background: rgba(34, 211, 238, 0.08);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--c-accent);
            outline-offset: 3px;
        }

        .nav-row {
            display: flex;
            align-items: center;
            gap: 10px;
            overflow-x: auto;
            padding: 10px 0 14px;
            scrollbar-width: none;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

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

        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--c-text-body);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.25s ease;
            white-space: nowrap;
            position: relative;
        }

        .nav-tab:hover {
            background: rgba(255, 255, 255, 0.10);
            color: var(--c-text-title);
        }

        .nav-tab.active {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            font-weight: 600;
        }

        .nav-tab.active::after {
            content: '';
            position: absolute;
            bottom: 0px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--c-accent);
            border-radius: 2px;
        }

        .nav-tab:focus-visible {
            outline: 2px solid var(--c-accent);
            outline-offset: 2px;
        }

        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            align-items: center;
            justify-content: center;
            color: var(--c-text-title);
            font-size: 18px;
            cursor: pointer;
        }

        @media (max-width: 767px) {
            .mobile-menu-btn {
                display: flex;
            }
            .header-right .btn-primary {
                display: none;
            }
        }

        @media (max-width: 112px) {
            .site-header {
                max-height: 112px;
            }
        }

        .glass-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
        }

        .glass-card:hover {
            border-color: rgba(255, 255, 255, 0.2);
        }

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

        @media (min-width: 768px) {
            .section-padding {
                padding: 6rem 0;
            }
        }

        .section-title {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--c-text-title);
            letter-spacing: -0.01em;
            position: relative;
            padding-bottom: 16px;
            margin-bottom: 20px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 4px;
            background: var(--c-accent);
            border-radius: 4px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 32px;
            }
        }

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

        .section-title-center::after {
            left: 50%;
            transform: translateX(-50%);
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(255, 184, 0, 0.15);
            color: var(--c-highlight);
            border: 1px solid rgba(255, 184, 0, 0.2);
            white-space: nowrap;
        }

        .site-footer {
            background: var(--c-bg1);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 3rem 0 0;
            margin-top: 4rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            padding-bottom: 2.5rem;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.4fr 0.8fr 1.2fr;
                gap: 2.5rem;
            }
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--c-text-weak);
            margin-top: 14px;
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--c-text-body);
            font-size: 15px;
            transition: all 0.3s;
        }

        .footer-social a:hover {
            color: var(--c-accent);
            border-color: var(--c-accent);
            background: rgba(34, 211, 238, 0.1);
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--c-text-title);
            margin-bottom: 14px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--c-text-body);
        }

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

        .footer-legal {
            font-size: 13px;
            color: var(--c-text-weak);
            line-height: 1.8;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            padding: 14px 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            text-align: center;
        }

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

        .footer-bottom a {
            color: var(--c-text-body);
        }

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

        .hero-bg {
            background-image: linear-gradient(to right, rgba(6, 13, 31, 0.92), rgba(6, 13, 31, 0.78)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 24px 20px;
            text-align: center;
            transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
        }

        .stat-card:hover {
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: 0 0 26px rgba(34, 211, 238, 0.18);
            transform: translateY(-2px);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--c-highlight);
            letter-spacing: -0.01em;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        @media (min-width: 768px) {
            .stat-number {
                font-size: 42px;
            }
        }

        .stat-label {
            font-size: 13px;
            color: var(--c-text-weak);
            margin-top: 6px;
        }

        .stat-bar {
            height: 4px;
            border-radius: 4px;
            background: rgba(255, 255, 255, 0.08);
            margin-top: 14px;
            overflow: hidden;
            position: relative;
        }

        .stat-bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
        }

        .feature-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 24px;
            transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.25);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--c-accent);
            font-size: 18px;
            margin-bottom: 16px;
            transition: all 0.3s;
        }

        .feature-icon svg {
            width: 22px;
            height: 22px;
            stroke: var(--c-accent);
            fill: none;
            stroke-width: 1.8;
        }

        .scenario-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: 16px;
            padding: 24px;
            transition: all 0.3s;
        }

        .scenario-card:hover {
            border-color: rgba(34, 211, 238, 0.3);
            background: rgba(255, 255, 255, 0.07);
            transform: translateY(-3px);
        }

        .process-step {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .process-step:last-child {
            border-bottom: none;
        }

        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(11, 110, 243, 0.35);
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 0;
            margin-bottom: 14px;
            border-left: 3px solid var(--c-accent);
            transition: border-color 0.3s, background 0.3s;
            overflow: hidden;
        }

        .faq-item[open] {
            background: rgba(255, 255, 255, 0.08);
            border-left-color: var(--c-highlight);
        }

        .faq-item summary {
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--c-text-title);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: color 0.3s;
        }

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

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

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--c-accent);
            transition: transform 0.2s ease;
            flex-shrink: 0;
        }

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

        .faq-item .faq-body {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--c-text-body);
            line-height: 1.8;
        }

        .table-container {
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .table-container table {
            width: 100%;
            border-collapse: collapse;
            font-size: 13px;
        }

        .table-container th {
            background: var(--c-bg1);
            color: var(--c-text-title);
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            white-space: nowrap;
        }

        .table-container td {
            padding: 12px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--c-text-body);
            white-space: nowrap;
        }

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

        .table-container tr:hover td {
            background: rgba(255, 255, 255, 0.03);
        }

        .cta-section {
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            left: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.12), transparent 70%);
            pointer-events: none;
        }

        .form-input {
            width: 100%;
            padding: 12px 16px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--c-text-title);
            font-size: 14px;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .form-input::placeholder {
            color: #5A6E8E;
        }

        .form-input:focus {
            border-color: var(--c-accent);
            box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.18);
            outline: none;
        }

        .form-input:hover {
            border-color: rgba(255, 255, 255, 0.25);
        }

        .cover-img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: 16px;
        }

        .news-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            overflow: hidden;
            transition: all 0.3s;
            height: 100%;
            display: block;
        }

        .news-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        }

        .news-card .cover-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 11;
            background: var(--c-bg1);
        }

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

        .news-card:hover .cover-wrap img {
            transform: scale(1.04);
        }

        .news-card .badge-wrap {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }

        .news-card .card-body {
            padding: 16px 18px 18px;
        }

        .news-card .card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--c-text-title);
            line-height: 1.45;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 46px;
        }

        .news-card .card-desc {
            font-size: 13px;
            color: var(--c-text-weak);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 12px;
            color: var(--c-text-weak);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 12px;
        }

        .news-card .card-meta i {
            font-size: 13px;
            color: var(--c-accent);
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px dashed rgba(255, 255, 255, 0.12);
            border-radius: 16px;
        }

        .empty-state .empty-icon {
            font-size: 38px;
            color: var(--c-text-weak);
            margin-bottom: 14px;
        }

        .empty-state p {
            color: var(--c-text-weak);
            font-size: 15px;
            margin-bottom: 16px;
        }

        @media (min-width: 640px) {
            .hero-title {
                font-size: 36px;
            }
        }

        @media (min-width: 1024px) {
            .hero-title {
                font-size: 48px;
            }
        }

        .point-list-positive {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .point-list-positive li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--c-text-body);
        }

        .point-list-positive li i {
            color: var(--c-accent);
            margin-top: 4px;
            font-size: 14px;
        }

        .point-list-negative {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .point-list-negative li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--c-text-body);
        }

        .point-list-negative li i {
            color: #FF5A76;
            margin-top: 4px;
            font-size: 14px;
        }

        .trust-point {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--c-text-body);
        }

        .trust-point i {
            color: var(--c-accent);
            font-size: 16px;
        }

        .result-tag {
            text-align: center;
            padding: 20px 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
        }

        .result-tag .number {
            font-size: 32px;
            font-weight: 800;
            color: var(--c-highlight);
            line-height: 1.2;
        }

        @media (min-width: 768px) {
            .result-tag .number {
                font-size: 40px;
            }
        }

        .result-tag .label {
            font-size: 13px;
            color: var(--c-text-weak);
            margin-top: 4px;
        }

        .sub-tabs {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            padding: 8px 0 16px;
            scrollbar-width: none;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 32px;
        }

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

        .sub-tab {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 13px;
            color: var(--c-text-body);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.07);
            transition: all 0.25s;
            white-space: nowrap;
        }

        .sub-tab:hover,
        .sub-tab.active {
            color: var(--c-text-title);
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(34, 211, 238, 0.3);
        }

        :focus-visible {
            outline: 2px solid var(--c-accent);
            outline-offset: 3px;
        }

/* roulang page: article */
:root {
        --c-primary: #0B6EF3;
        --c-primary-h: #2B8FFF;
        --c-accent: #22D3EE;
        --c-highlight: #FFB800;
        --c-bg0: #060D1F;
        --c-bg1: #0B1428;
        --c-text: #F5F9FF;
        --c-body: #B0C2DC;
        --c-muted: #6F84A8;
        --c-border: rgba(255, 255, 255, 0.08);
        --c-card: rgba(255, 255, 255, 0.05);
        --radius: 16px;
        --radius-btn: 999px;
        --shadow-card: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 20px 50px -20px rgba(0, 180, 255, 0.25);
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
        background: var(--c-bg0);
        color: var(--c-body);
        line-height: 1.75;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
        font-variant-numeric: tabular-nums;
    }

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

    a {
        color: var(--c-accent);
        text-decoration: none;
        transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    }

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

    button,
    input {
        font-family: inherit;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 16px;
        padding-right: 16px;
    }

    @media (min-width: 768px) {
        .container {
            padding-left: 24px;
            padding-right: 24px;
        }
    }

    /* 站点头部 */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 50;
        background: rgba(6, 13, 31, 0.85);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--c-border);
    }

    .header-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 14px 0;
    }

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

    .logo-icon {
        width: 38px;
        height: 38px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 17px;
        box-shadow: 0 0 18px rgba(11, 110, 243, 0.35);
    }

    .logo-text {
        display: inline-flex;
        align-items: baseline;
        gap: 6px;
    }

    .logo-name {
        font-size: 20px;
        font-weight: 800;
        color: var(--c-text);
        letter-spacing: 0.02em;
    }

    .logo-sub {
        font-size: 11px;
        font-weight: 600;
        letter-spacing: 0.14em;
        color: var(--c-accent);
        text-transform: uppercase;
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .header-search {
        position: relative;
        display: none;
        max-width: 260px;
        width: 100%;
    }

    .header-search input {
        width: 100%;
        padding: 8px 14px 8px 38px;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid transparent;
        color: var(--c-text);
        font-size: 13px;
        outline: none;
        transition: border-color 0.2s, box-shadow 0.2s;
    }

    .header-search input::placeholder {
        color: #5A6E8E;
    }

    .header-search input:focus {
        border-color: var(--c-accent);
        box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.18);
    }

    .header-search i {
        position: absolute;
        left: 14px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--c-muted);
        font-size: 13px;
    }

    .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid var(--c-border);
        color: var(--c-text);
        font-size: 16px;
        cursor: pointer;
        transition: border-color 0.2s, background 0.2s;
    }

    .nav-toggle:hover {
        border-color: var(--c-accent);
        background: rgba(34, 211, 238, 0.1);
    }

    .nav-toggle:focus-visible {
        outline: 2px solid var(--c-accent);
        outline-offset: 2px;
    }

    @media (min-width: 768px) {
        .header-search {
            display: block;
        }
        .nav-toggle {
            display: none;
        }
    }

    /* 导航行 */
    .nav-row {
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
        border-top: 1px solid rgba(255, 255, 255, 0.04);
        display: none;
    }

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

    .nav-row.open {
        display: block;
    }

    @media (min-width: 768px) {
        .nav-row {
            display: block;
        }
    }

    .nav-row-inner {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 10px 16px;
        white-space: nowrap;
    }

    @media (min-width: 768px) {
        .nav-row-inner {
            padding: 10px 24px;
        }
    }

    .nav-tab {
        position: relative;
        display: inline-flex;
        align-items: center;
        padding: 8px 18px;
        border-radius: 999px;
        font-size: 14px;
        font-weight: 500;
        color: var(--c-body);
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid transparent;
        transition: background 0.2s, color 0.2s, border-color 0.2s;
    }

    .nav-tab:hover {
        background: rgba(255, 255, 255, 0.1);
        color: var(--c-text);
        border-color: rgba(255, 255, 255, 0.12);
    }

    .nav-tab.active {
        background: rgba(255, 255, 255, 0.15);
        color: #fff;
    }

    .nav-tab.active::after {
        content: "";
        position: absolute;
        left: 18px;
        right: 18px;
        bottom: 0px;
        height: 2px;
        border-radius: 2px;
        background: var(--c-accent);
    }

    .nav-tab:focus-visible {
        outline: 2px solid var(--c-accent);
        outline-offset: 2px;
    }

    /* 按钮 */
    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 22px;
        border-radius: 999px;
        background: linear-gradient(to right, #0B6EF3, #22D3EE);
        color: #fff;
        font-size: 14px;
        font-weight: 600;
        border: none;
        cursor: pointer;
        box-shadow: 0 0 20px rgba(0, 150, 255, 0.35);
        transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
        white-space: nowrap;
    }

    .btn-primary:hover {
        transform: translateY(-1px);
        box-shadow: 0 0 30px rgba(0, 150, 255, 0.5);
        color: #fff;
    }

    .btn-primary:active {
        transform: translateY(0);
        filter: brightness(0.9);
    }

    .btn-primary:focus-visible {
        outline: 2px solid var(--c-accent);
        outline-offset: 3px;
    }

    .btn-sm {
        padding: 7px 16px;
        font-size: 13px;
    }

    .btn-lg {
        padding: 14px 34px;
        font-size: 15px;
    }

    .btn-secondary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 22px;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.15);
        color: #fff;
        font-size: 14px;
        font-weight: 500;
        backdrop-filter: blur(10px);
        transition: border-color 0.2s, color 0.2s, transform 0.2s, background 0.2s;
    }

    .btn-secondary:hover {
        border-color: var(--c-accent);
        color: var(--c-accent);
        transform: translateY(-1px);
    }

    .btn-secondary:active {
        transform: translateY(0);
    }

    .btn-secondary:focus-visible {
        outline: 2px solid var(--c-accent);
        outline-offset: 3px;
    }

    /* 页面横幅 */
    .page-banner {
        position: relative;
        padding: 48px 0 40px;
        background: linear-gradient(rgba(6, 13, 31, 0.88), rgba(6, 13, 31, 0.92)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
        border-bottom: 1px solid var(--c-border);
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 13px;
        color: var(--c-muted);
        margin-bottom: 24px;
    }

    .breadcrumb a {
        color: var(--c-muted);
        transition: color 0.2s;
    }

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

    .breadcrumb i {
        font-size: 11px;
        color: var(--c-muted);
    }

    .breadcrumb .current {
        color: var(--c-body);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 260px;
    }

    .banner-inner {
        max-width: 860px;
    }

    .banner-inner h1 {
        font-size: 34px;
        line-height: 1.25;
        font-weight: 800;
        color: var(--c-text);
        letter-spacing: -0.01em;
        margin-bottom: 18px;
        letter-spacing: 0.01em;
    }

    @media (min-width: 768px) {
        .banner-inner h1 {
            font-size: 42px;
        }
    }

    .article-meta {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 14px;
        font-size: 14px;
        color: var(--c-muted);
    }

    .meta-item {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .meta-item i {
        color: var(--c-accent);
        font-size: 13px;
    }

    .badge {
        display: inline-flex;
        align-items: center;
        padding: 3px 12px;
        border-radius: 999px;
        background: rgba(255, 184, 0, 0.14);
        border: 1px solid rgba(255, 184, 0, 0.25);
        color: var(--c-highlight);
        font-size: 12px;
        font-weight: 600;
        letter-spacing: 0.04em;
    }

    /* 主体布局 */
    .article-main {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    .article-wrap {
        max-width: 820px;
        margin: 0 auto;
    }

    .article-body {
        font-size: 15px;
        line-height: 1.8;
        color: #C0D2EC;
    }

    .article-body p {
        margin-bottom: 22px;
    }

    .article-body > p:first-child {
        font-size: 17px;
        color: var(--c-text);
    }

    .article-body h2 {
        font-size: 26px;
        font-weight: 800;
        color: var(--c-text);
        margin: 56px 0 20px;
        padding-left: 16px;
        border-left: 4px solid var(--c-accent);
        line-height: 1.3;
    }

    .article-body h3 {
        font-size: 21px;
        font-weight: 700;
        color: var(--c-text);
        margin: 36px 0 16px;
        line-height: 1.4;
    }

    .article-body h4 {
        font-size: 18px;
        font-weight: 700;
        color: var(--c-text);
        margin: 28px 0 12px;
    }

    .article-body ul,
    .article-body ol {
        margin: 0 0 22px;
        padding-left: 24px;
    }

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

    .article-body a {
        color: var(--c-accent);
        border-bottom: 1px solid rgba(34, 211, 238, 0.35);
        transition: border-color 0.2s, color 0.2s;
    }

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

    .article-body blockquote {
        margin: 28px 0;
        padding: 18px 22px;
        border-left: 3px solid var(--c-highlight);
        background: rgba(255, 184, 0, 0.06);
        border-radius: 0 14px 14px 0;
        color: #D4E1F5;
        font-style: normal;
    }

    .article-body blockquote p {
        margin-bottom: 0;
    }

    .article-body img {
        border-radius: 16px;
        border: 1px solid rgba(255, 255, 255, 0.1);
        margin: 28px auto;
        width: 100%;
        height: auto;
    }

    .article-body figcaption {
        text-align: center;
        font-size: 13px;
        color: var(--c-muted);
        margin: -18px 0 24px;
    }

    .article-body table {
        width: 100%;
        border-collapse: collapse;
        margin: 28px 0;
        font-size: 14px;
        border-radius: 12px;
        overflow: hidden;
        display: block;
        overflow-x: auto;
    }

    .article-body th {
        background: rgba(11, 110, 243, 0.2);
        color: var(--c-text);
        padding: 12px 14px;
        text-align: left;
        font-weight: 600;
        white-space: nowrap;
    }

    .article-body td {
        padding: 11px 14px;
        border-bottom: 1px solid var(--c-border);
        color: var(--c-body);
    }

    .article-body tr:last-child td {
        border-bottom: none;
    }

    .article-body pre {
        background: var(--c-bg1);
        border: 1px solid var(--c-border);
        border-radius: 14px;
        padding: 18px;
        overflow-x: auto;
        font-size: 13px;
        line-height: 1.7;
        color: #C0D2EC;
        margin: 28px 0;
        font-family: "SF Mono", "Consolas", monospace;
    }

    .article-body code {
        font-family: "SF Mono", "Consolas", monospace;
        background: rgba(255, 255, 255, 0.08);
        padding: 2px 6px;
        border-radius: 6px;
        font-size: 13px;
        color: var(--c-accent);
    }

    .article-body pre code {
        background: transparent;
        padding: 0;
        color: inherit;
    }

    .article-footnote {
        margin-top: 40px;
        padding-top: 20px;
        border-top: 1px dashed rgba(255, 255, 255, 0.12);
        font-size: 13px;
        color: var(--c-muted);
    }

    /* 空状态 */
    .empty-state {
        text-align: center;
        padding: 60px 20px;
        background: rgba(255, 255, 255, 0.03);
        border: 1px dashed rgba(255, 255, 255, 0.12);
        border-radius: 20px;
    }

    .empty-state i {
        font-size: 40px;
        color: var(--c-muted);
        margin-bottom: 16px;
        display: inline-block;
    }

    .empty-state h3 {
        font-size: 20px;
        color: var(--c-text);
        margin-bottom: 10px;
    }

    .empty-state p {
        font-size: 14px;
        color: var(--c-muted);
        margin-bottom: 20px;
    }

    /* 标签区 */
    .article-tags {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 36px;
        padding-top: 24px;
        border-top: 1px solid var(--c-border);
    }

    .tag {
        display: inline-flex;
        align-items: center;
        padding: 5px 14px;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid var(--c-border);
        font-size: 12px;
        color: var(--c-body);
        letter-spacing: 0.04em;
        transition: border-color 0.2s, color 0.2s, background 0.2s;
    }

    .tag:hover {
        border-color: var(--c-accent);
        color: var(--c-accent);
        background: rgba(34, 211, 238, 0.08);
    }

    /* 上下篇 */
    .pager {
        display: grid;
        grid-template-columns: 1fr;
        gap: 12px;
        margin-top: 28px;
    }

    @media (min-width: 640px) {
        .pager {
            grid-template-columns: 1fr 1fr;
        }
    }

    .pager-btn {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        padding: 14px 20px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid var(--c-border);
        border-radius: 14px;
        color: var(--c-body);
        font-size: 14px;
        transition: border-color 0.2s, background 0.2s, color 0.2s, transform 0.2s;
    }

    .pager-btn:hover {
        border-color: var(--c-accent);
        background: rgba(34, 211, 238, 0.06);
        color: var(--c-text);
        transform: translateY(-2px);
    }

    .pager-btn i {
        font-size: 13px;
        color: var(--c-accent);
    }

    /* 相关推荐 */
    .section {
        padding: 64px 0;
    }

    .section-head {
        display: flex;
        align-items: center;
        gap: 14px;
        margin-bottom: 32px;
    }

    .section-title {
        font-size: 28px;
        font-weight: 800;
        color: var(--c-text);
        line-height: 1.3;
        letter-spacing: -0.01em;
    }

    .section-line {
        width: 40px;
        height: 4px;
        border-radius: 4px;
        background: var(--c-accent);
    }

    .related-section {
        background: var(--c-bg1);
    }

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

    @media (min-width: 768px) {
        .related-grid {
            grid-template-columns: repeat(3, 1fr);
        }
    }

    .related-card {
        display: flex;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid var(--c-border);
        border-radius: 16px;
        overflow: hidden;
        backdrop-filter: blur(12px);
        box-shadow: var(--shadow-card);
        transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
    }

    .related-card:hover {
        transform: translateY(-4px);
        border-color: rgba(255, 255, 255, 0.2);
        box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.2), 0 24px 50px -20px rgba(0, 180, 255, 0.3);
    }

    .related-card img {
        width: 100%;
        height: 150px;
        object-fit: cover;
    }

    .related-body {
        padding: 18px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }

    .related-body h3 {
        font-size: 16px;
        font-weight: 700;
        color: var(--c-text);
        line-height: 1.45;
        margin-bottom: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .related-body p {
        font-size: 13px;
        color: var(--c-muted);
        line-height: 1.7;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 12px;
    }

    .related-date {
        font-size: 12px;
        color: var(--c-muted);
        margin-top: auto;
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .related-date i {
        color: var(--c-accent);
    }

    /* CTA */
    .cta-section {
        padding: 64px 0;
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: "";
        position: absolute;
        content: "";
        position: absolute;
        right: -80px;
        top: -80px;
        width: 280px;
        height: 280px;
        background: radial-gradient(circle, rgba(34, 211, 238, 0.16), transparent 70%);
        pointer-events: none;
    }

    .cta-inner {
        position: relative;
        text-align: center;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid var(--c-border);
        border-radius: 24px;
        padding: 48px 24px;
        backdrop-filter: blur(14px);
        box-shadow: var(--shadow-card);
    }

    .cta-inner h2 {
        font-size: 28px;
        font-weight: 800;
        color: var(--c-text);
        margin-bottom: 12px;
    }

    .cta-inner p {
        font-size: 15px;
        color: var(--c-body);
        max-width: 560px;
        margin: 0 auto 28px;
    }

    /* 页脚 */
    .site-footer {
        background: var(--c-bg1);
        border-top: 1px solid var(--c-border);
        padding: 56px 0 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 36px;
        padding-bottom: 40px;
    }

    @media (min-width: 768px) {
        .footer-grid {
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 24px;
        }
    }

    .footer-brand p {
        font-size: 13px;
        color: var(--c-muted);
        margin-top: 14px;
        max-width: 340px;
        line-height: 1.8;
    }

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

    .footer-social a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid var(--c-border);
        color: var(--c-muted);
        font-size: 14px;
        transition: border-color 0.2s, color 0.2s, background 0.2s;
    }

    .footer-social a:hover {
        border-color: var(--c-accent);
        color: var(--c-accent);
        background: rgba(34, 211, 238, 0.08);
    }

    .footer-title {
        font-size: 15px;
        font-weight: 700;
        color: var(--c-text);
        margin-bottom: 16px;
    }

    .footer-links {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .footer-links a {
        font-size: 14px;
        color: var(--c-muted);
        transition: color 0.2s, padding-left 0.2s;
    }

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

    .footer-legal {
        font-size: 13px;
        color: var(--c-muted);
        line-height: 1.8;
    }

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

    .footer-bottom a {
        color: var(--c-muted);
        transition: color 0.2s;
    }

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

    /* focus */
    a:focus-visible,
    button:focus-visible {
        outline: 2px solid var(--c-accent);
        outline-offset: 3px;
    }

    @media (max-width: 520px) {
        .banner-inner h1 {
            font-size: 28px;
        }
        .section {
            padding: 48px 0;
        }
        .section-title {
            font-size: 24px;
        }
        .cta-inner {
            padding: 36px 18px;
        }
        .cta-inner h2 {
            font-size: 24px;
        }
    }