/* roulang page: index */
:root {
  --primary: #00D4A2;
  --primary-hover: #00E0A8;
  --accent: #F5A623;
  --cta: #FF5D3A;
  --bg: #0B1220;
  --card: #151F31;
  --card-hover: #1B2740;
  --text: #E8EDF4;
  --muted: #8B9BB4;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(0, 212, 162, 0.4);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.45);
  --section-space: 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", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s, background 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

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

ul {
  list-style: none;
}

button,
input {
  font-family: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  max-width: 1200px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1040;
  padding: 16px 0 0;
}

.nav-panel {
  display: flex;
  align-items: center;
  gap: 20px;
  background: #111C2E;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 12px 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  flex-wrap: wrap;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(0, 212, 162, 0.15);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  flex-wrap: wrap;
}

.nav-link {
  padding: 10px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--primary);
}

.nav-link.active {
  background: rgba(0, 212, 162, 0.15);
  color: var(--primary);
}

.btn-nav-cta {
  background: var(--cta);
  color: #fff;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
  border: none;
}

.btn-nav-cta:hover {
  background: #ff6b4a;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(255, 93, 58, 0.35);
}

.nav-toggler {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  color: var(--text);
  font-size: 20px;
  line-height: 1;
  margin-left: auto;
}

.mobile-nav {
  padding-top: 12px;
}

.mobile-nav .nav-link {
  display: flex;
  justify-content: center;
  margin-bottom: 8px;
  width: 100%;
}

@media (min-width: 992px) and (max-width: 1199.98px) {
  .nav-panel {
    gap: 12px;
  }

  .nav-link {
    padding: 10px 12px;
    font-size: 13px;
  }

  .nav-brand {
    font-size: 18px;
  }
}

@media (max-width: 991.98px) {
  .nav-links {
    display: none;
  }

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

  .btn-nav-cta {
    display: none;
  }

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

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 110px 0 80px;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(11, 18, 32, 0.72) 0%, rgba(11, 18, 32, 0.92) 100%);
}

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

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: 44px;
  line-height: 1.3;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-left: 16px;
}

.hero h1::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 4px;
  border-radius: 4px;
  background: var(--primary);
}

.hero-sub {
  font-size: 17px;
  color: var(--muted);
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.btn-primary-lg {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #0B1220;
  border: none;
  padding: 14px 30px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  box-shadow: 0 6px 20px rgba(0, 212, 162, 0.25);
}

.btn-primary-lg:hover {
  background: var(--primary-hover);
  color: #0B1220;
  transform: translateY(-2px);
  box-shadow: 0 0 18px rgba(0, 212, 162, 0.35);
}

.btn-outline-lg {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--text);
  padding: 14px 30px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
}

.btn-outline-lg:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.hero-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(0, 212, 162, 0.12);
  border: 1px solid rgba(0, 212, 162, 0.25);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
}

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 10px;
  background: linear-gradient(135deg, rgba(0, 212, 162, 0.4), rgba(245, 166, 35, 0.2));
}

.hero-visual img {
  border-radius: 12px;
  width: 100%;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.hero-stat {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.hero-stat strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
}

.hero-stat em {
  font-style: normal;
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 991.98px) {
  .hero {
    padding: 70px 0 56px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero h1 {
    font-size: 34px;
  }

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

@media (max-width: 575.98px) {
  .hero h1 {
    font-size: 30px;
  }

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

  .hero-actions .btn-primary-lg,
  .hero-actions .btn-outline-lg {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: 20px 12px;
  }
}

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

.section-head {
  margin-bottom: 44px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  position: relative;
  padding-left: 16px;
  margin-bottom: 0;
}

.section-head h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 4px;
  background: var(--primary);
}

.section-head p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 8px;
  margin-bottom: 0;
}

.view-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  flex-shrink: 0;
}

.view-all:hover {
  gap: 10px;
  color: var(--primary);
}

@media (max-width: 767.98px) {
  .section {
    --section-space: 56px;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

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

/* ===== Features Carousel ===== */
.features-carousel-wrap {
  position: relative;
  padding-bottom: 48px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  transition: all 0.3s;
  height: 100%;
}

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

.feature-tag {
  display: inline-flex;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(0, 212, 162, 0.15);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 14px;
}

.feature-cover {
  aspect-ratio: 16 / 10;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 16px;
  background: #0E1830;
}

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

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

.feature-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 0;
}

.carousel-indicators.custom-indicators {
  bottom: -48px;
  margin-bottom: 0;
}

.carousel-indicators.custom-indicators [data-bs-target] {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.25);
  border: none;
  margin: 0 5px;
  transition: width 0.3s, background 0.3s;
}

.carousel-indicators.custom-indicators .active {
  width: 24px;
  background: var(--primary);
}

.carousel-control-prev,
.carousel-control-next {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  color: #0B1220;
  top: 40%;
  transform: translateY(-50%);
  opacity: 1;
  border: none;
}

.carousel-control-prev {
  left: -20px;
}

.carousel-control-next {
  right: -20px;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
  background: var(--primary);
  color: #0B1220;
  opacity: 1;
}

.carousel-control-prev i,
.carousel-control-next i {
  font-size: 22px;
  line-height: 1;
}

@media (max-width: 575.98px) {
  .carousel-control-prev,
  .carousel-control-next {
    display: none;
  }
}

/* ===== System Requirements ===== */
.sys-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  height: 100%;
}

.sys-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.sys-head-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(0, 212, 162, 0.15);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.sys-head h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 0;
  color: var(--text);
}

.sys-badge {
  display: inline-flex;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(245, 166, 35, 0.12);
  border: 1px solid rgba(245, 166, 35, 0.3);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}

.sys-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.sys-list i {
  color: var(--primary);
  font-size: 17px;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.sys-name {
  flex: 1;
  color: var(--muted);
  font-size: 14px;
}

.sys-value {
  font-size: 14px;
  font-weight: 500;
  text-align: right;
  color: var(--text);
}

@media (max-width: 767.98px) {
  .sys-block {
    padding: 24px;
  }
}

/* ===== Reviews ===== */
.review-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.3s;
  height: 100%;
  position: relative;
}

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

.review-stars {
  color: var(--accent);
  font-size: 14px;
  margin-bottom: 16px;
}

.review-stars i {
  margin-right: 2px;
}

.review-text {
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #0B1220;
  font-weight: 700;
  flex-shrink: 0;
}

.review-meta strong {
  font-size: 14px;
  display: block;
  line-height: 1.3;
  color: var(--text);
}

.review-meta span {
  font-size: 12px;
  color: var(--muted);
}

.review-tag {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 11px;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 999px;
}

/* ===== Download ===== */
.download-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 52px 32px;
  text-align: center;
  position: relative;
}

.download-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(0, 212, 162, 0.35), transparent 50%, rgba(245, 166, 35, 0.25));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.download-version {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 36px;
}

.download-btns {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  width: 230px;
  height: 64px;
  border-radius: 12px;
  padding: 12px 20px;
  transition: all 0.2s;
  text-align: left;
}

.download-btn i {
  font-size: 28px;
  line-height: 1;
  flex-shrink: 0;
}

.download-btn .dl-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.download-btn .dl-text strong {
  font-size: 16px;
  font-weight: 600;
}

.download-btn .dl-text em {
  font-style: normal;
  font-size: 12px;
  opacity: 0.85;
}

.download-btn-main {
  background: var(--cta);
  color: #fff;
  border: none;
  box-shadow: 0 8px 20px rgba(255, 93, 58, 0.3);
}

.download-btn-main:hover {
  background: #ff6b4a;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 93, 58, 0.35);
}

.download-btn-outline {
  background: #101A2C;
  border: 1px solid rgba(0, 212, 162, 0.5);
  color: var(--primary);
}

.download-btn-outline:hover {
  background: rgba(0, 212, 162, 0.08);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 0 18px rgba(0, 212, 162, 0.2);
}

@media (max-width: 575.98px) {
  .download-btn {
    width: 100%;
  }
}

/* ===== News ===== */
.news-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s;
  height: 100%;
}

.news-card:hover {
  background: var(--card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.news-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #0E1830;
}

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

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

.badge-cat {
  display: inline-flex;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(0, 212, 162, 0.9);
  color: #0B1220;
  font-size: 12px;
  font-weight: 600;
}

.news-body {
  padding: 20px;
}

.news-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.news-body p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--muted);
}

.news-meta .read-more {
  color: var(--primary);
  font-weight: 500;
  white-space: nowrap;
}

.news-meta .read-more i {
  font-size: 14px;
}

.news-empty {
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  background: #131F33;
  padding: 48px;
  text-align: center;
  color: var(--muted);
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 780px;
  margin: 0 auto;
}

.accordion-item {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px !important;
  margin-bottom: 12px;
  overflow: hidden;
}

.accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: var(--border-hover);
}

.accordion-button {
  background: transparent;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  padding: 20px 24px;
  box-shadow: none;
  display: flex;
  align-items: center;
  gap: 12px;
}

.accordion-button:not(.collapsed) {
  background: rgba(0, 212, 162, 0.06);
  color: var(--primary);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--primary);
}

.accordion-button::after {
  display: none;
}

.icon-arrow {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0, 212, 162, 0.15);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: transform 0.3s;
}

.accordion-button:not(.collapsed) .icon-arrow {
  transform: rotate(45deg);
}

.accordion-body {
  padding: 0 24px 22px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* ===== Footer ===== */
.site-footer {
  background: #0A101C;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 64px 0 0;
  margin-top: 20px;
}

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

.footer-brand {
  font-size: 20px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  margin-bottom: 14px;
}

.footer-desc {
  font-size: 14px;
  color: var(--muted);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
  color: var(--text);
}

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

.footer-col ul a {
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s;
}

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

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 10px;
}

.footer-contact i {
  color: var(--primary);
  font-size: 15px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 991.98px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 575.98px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Mobile download bar ===== */
.mobile-download-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1050;
  background: rgba(10, 16, 28, 0.96);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px 16px;
  display: none;
}

.mobile-download-bar .btn {
  width: 100%;
  background: var(--cta);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px;
  font-weight: 600;
  font-size: 15px;
}

@media (max-width: 767.98px) {
  .mobile-download-bar {
    display: block;
  }

  body {
    padding-bottom: 64px;
  }
}

/* ===== Utility ===== */
.text-primary-brand {
  color: var(--primary);
}

.bg-card {
  background: var(--card);
}

.border-card {
  border: 1px solid var(--border);
}

.rounded-lg {
  border-radius: var(--radius-lg);
}

/* roulang page: category1 */
/* ===== Design Tokens ===== */
        :root {
            --primary: #00D4A2;
            --secondary: #F5A623;
            --bg: #0B1220;
            --card-bg: #151F31;
            --card-hover: #1B2740;
            --text: #E8EDF4;
            --text-muted: #8B9BB4;
            --text-disabled: #3A475C;
            --cta: #FF5D3A;
            --border: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(0, 212, 162, 0.4);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-pill: 16px;
            --shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.45);
            --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            --transition: all .3s ease;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            background: var(--bg);
            color: var(--text);
            font-family: var(--font-main);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        ul {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        button {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        body {
            padding-bottom: 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 0 16px;
        }
        .nav-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(17, 28, 46, 0.95);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 0 16px;
            height: 72px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            backdrop-filter: blur(8px);
            max-width: 1200px;
            margin: 0 auto;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
        }
        .nav-brand .brand-icon {
            color: var(--primary);
            font-size: 24px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            padding: 10px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            line-height: 1.2;
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--primary);
        }
        .nav-link.active {
            background: rgba(0, 212, 162, 0.15);
            color: var(--primary);
        }
        .btn-nav-cta {
            padding: 10px 22px;
            background: var(--primary);
            color: #0B1220;
            border-radius: 8px;
            font-weight: 700;
            font-size: 14px;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition);
        }
        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 18px rgba(0, 212, 162, 0.35);
            color: #0B1220;
        }
        .btn-nav-cta:active {
            transform: translateY(0);
        }
        .nav-toggler {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text);
            border-radius: 8px;
            padding: 6px 12px;
            font-size: 24px;
            line-height: 1;
            cursor: pointer;
        }
        .mobile-nav {
            background: rgba(17, 28, 46, 0.98);
            border-radius: 12px;
            margin-top: 8px;
            padding: 16px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }
        .mobile-nav .nav-link {
            display: block;
            text-align: center;
            margin: 0;
        }
        .mobile-nav .nav-link.mobile-cta {
            background: var(--primary);
            color: #0B1220;
            font-weight: 700;
            grid-column: span 2;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(11, 18, 32, 0.45), rgba(11, 18, 32, 0.9));
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 212, 162, 0.15);
            color: var(--primary);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 20px;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 12px;
            letter-spacing: -0.5px;
        }
        .hero-sub {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 440px;
            margin-bottom: 32px;
        }
        .hero-ctas {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 32px;
        }
        .btn-lg-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            background: var(--primary);
            color: #0B1220;
            border-radius: 10px;
            font-weight: 700;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-lg-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 20px rgba(0, 212, 162, 0.4);
            color: #0B1220;
        }
        .btn-lg-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            background: transparent;
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 10px;
            font-weight: 500;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-lg-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 212, 162, 0.06);
        }
        .hero-trusts {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .trust-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-pill);
            font-size: 12px;
            color: var(--text);
        }
        .trust-item i {
            color: var(--primary);
            font-size: 14px;
        }
        .hero-cover {
            border-radius: var(--radius-lg);
            border: 1px solid rgba(0, 212, 162, 0.3);
            padding: 8px;
            background: rgba(255, 255, 255, 0.04);
            box-shadow: var(--shadow);
            margin-top: 40px;
        }
        .hero-cover img {
            border-radius: 12px;
            width: 100%;
            height: auto;
        }

        /* ===== Section ===== */
        .section {
            padding: 96px 0;
        }
        .section-alt {
            background: #0E1524;
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-head .section-title {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin: 0 0 12px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin: 0 0 12px;
            position: relative;
        }
        .section-title::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 2px;
            margin-right: 12px;
            vertical-align: -4px;
        }
        .section-head .section-title::before {
            margin-right: 0;
            display: none;
        }
        .section-head .section-title {
            position: relative;
            display: inline-block;
        }
        .section-head .section-title::after {
            content: '';
            display: block;
            width: 48px;
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
            margin: 12px auto 0;
        }
        .section-sub {
            color: var(--text-muted);
            font-size: 14px;
            margin: 0;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 16px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== Feature Cards ===== */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .feature-card:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card-img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            display: block;
        }
        .feature-body {
            padding: 20px;
        }
        .feature-tag {
            display: inline-block;
            background: rgba(0, 212, 162, 0.15);
            color: var(--primary);
            border-radius: var(--radius-pill);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
        }
        .feature-title {
            font-size: 18px;
            font-weight: 600;
            margin: 14px 0 6px;
            line-height: 1.4;
        }
        .feature-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
        }
        .step-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(0, 212, 162, 0.15);
            color: var(--primary);
            font-weight: 700;
            font-size: 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .step-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }

        /* ===== System ===== */
        .sys-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            height: 100%;
            transition: var(--transition);
        }
        .sys-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }
        .sys-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .sys-name {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 600;
            margin: 0;
        }
        .sys-name i {
            font-size: 26px;
            color: var(--primary);
        }
        .sys-badge {
            background: rgba(0, 212, 162, 0.15);
            color: var(--primary);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 500;
        }
        .sys-list {
            margin: 0;
        }
        .sys-list li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 14px;
            gap: 16px;
        }
        .sys-list li:last-child {
            border-bottom: none;
        }
        .sys-label {
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .sys-label i {
            color: var(--primary);
            font-size: 14px;
        }
        .sys-value {
            color: var(--text);
            font-weight: 500;
            text-align: right;
        }

        /* ===== Reviews ===== */
        .review-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .review-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }
        .review-stars {
            color: var(--secondary);
            font-size: 13px;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }
        .review-text {
            font-size: 14px;
            line-height: 1.6;
            color: var(--text);
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: auto;
        }
        .review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(0, 212, 162, 0.2);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            flex-shrink: 0;
        }
        .review-name {
            font-size: 14px;
            font-weight: 500;
        }
        .review-meta {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.08) !important;
            border-radius: 12px !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .accordion-button {
            background: var(--card-bg);
            color: var(--text);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none !important;
            border: none;
        }
        .accordion-button:not(.collapsed) {
            background: var(--card-bg);
            color: var(--primary);
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(0, 212, 162, 0.3) !important;
        }
        .accordion-button::after {
            filter: invert(75%) sepia(30%) saturate(600%) hue-rotate(100deg);
        }
        .accordion-body {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== CTA ===== */
        .cta-round {
            background: var(--card-bg);
            border-radius: 24px;
            padding: 72px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .cta-round::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
        }
        .cta-inner h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-inner p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 32px;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0A101C;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 24px;
            margin-top: 48px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
        }
        .footer-brand .brand-icon {
            color: var(--primary);
            font-size: 24px;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 16px;
            max-width: 280px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-contact li {
            color: var(--text-muted);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--primary);
            font-size: 14px;
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 13px;
        }

        /* ===== Mobile Download Bar ===== */
        .mobile-download-bar {
            display: none;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .nav-links {
                gap: 6px;
            }
            .nav-link {
                padding: 8px 12px;
                font-size: 13px;
            }
        }
        @media (max-width: 991px) {
            .nav-links {
                display: none;
            }
            .btn-nav-cta {
                display: none;
            }
            .nav-toggler {
                display: block;
            }
            .hero h1 {
                font-size: 36px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-head .section-title::after {
                width: 36px;
                margin-top: 8px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 14px;
                margin-bottom: 24px;
            }
            .hero-ctas {
                flex-direction: column;
                gap: 12px;
            }
            .hero-ctas .btn-lg-primary,
            .hero-ctas .btn-lg-outline {
                width: 100%;
                justify-content: center;
            }
            .hero-trusts {
                gap: 8px;
            }
            .trust-item {
                padding: 6px 10px;
                font-size: 11px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .sys-card {
                padding: 20px;
                margin-bottom: 16px;
            }
            .cta-round {
                padding: 48px 24px;
            }
            .cta-buttons {
                flex-direction: column;
            }
            .cta-buttons .btn-lg-primary,
            .cta-buttons .btn-lg-outline {
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .mobile-download-bar {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                background: rgba(17, 28, 46, 0.98);
                padding: 12px 16px;
                z-index: 1000;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                backdrop-filter: blur(8px);
            }
            .mobile-download-bar .btn-md-primary {
                width: 100%;
                background: var(--primary);
                color: #0B1220;
                border-radius: 10px;
                padding: 14px;
                font-weight: 700;
                font-size: 15px;
                border: none;
                text-align: center;
                cursor: pointer;
            }
            body {
                padding-bottom: 72px;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-header {
                padding: 0 12px;
                top: 12px;
            }
            .nav-panel {
                height: 64px;
                padding: 0 12px;
            }
            .nav-brand {
                font-size: 17px;
            }
            .nav-brand .brand-icon {
                font-size: 20px;
            }
            .mobile-nav {
                grid-template-columns: 1fr;
            }
            .mobile-nav .nav-link.mobile-cta {
                grid-column: span 1;
            }
            .hero {
                min-height: auto;
                padding: 120px 0 64px;
            }
            .stats-grid {
                gap: 12px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-number {
                font-size: 28px;
            }
        }
        @media (max-width: 390px) {
            .hero-trusts {
                justify-content: flex-start;
            }
            .trust-item {
                font-size: 10px;
                padding: 4px 8px;
            }
        }

/* roulang page: article */
:root {
    --primary: #00D4A2;
    --primary-dark: #00B98A;
    --accent: #F5A623;
    --cta: #FF5D3A;
    --bg: #0B1220;
    --bg-deep: #0A101C;
    --card: #151F31;
    --card-hover: #1B2740;
    --text: #E8EDF4;
    --muted: #8B9BB4;
    --muted-dark: #3A475C;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(0, 212, 162, 0.4);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.45);
    --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}
* {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
a:hover {
    color: var(--primary-dark);
}
img {
    max-width: 100%;
    display: block;
}
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}
.container {
    max-width: 1200px;
}

/* 导航 */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1050;
    padding: 16px 0 0;
}
.nav-panel {
    display: flex;
    align-items: center;
    gap: 18px;
    background: #111C2E;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 0 16px;
    height: 72px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
}
.brand-icon {
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 162, 0.15);
    color: var(--primary);
    border-radius: 10px;
    font-size: 18px;
}
.nav-links {
    display: flex;
    gap: 8px;
    margin-left: auto;
}
.nav-link {
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 500;
    transition: background 0.2s, color 0.2s, transform 0.2s;
}
.nav-link:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--primary);
}
.nav-link.active {
    background: rgba(0, 212, 162, 0.12);
    color: var(--primary);
}
.btn-nav-cta {
    background: var(--cta);
    color: #fff;
    border: 1px solid transparent;
    border-radius: 10px;
    padding: 10px 18px;
    font-weight: 600;
    white-space: nowrap;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.btn-nav-cta:hover {
    background: #FF6A48;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(255, 93, 58, 0.3);
}
.nav-toggler {
    display: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text);
    border-radius: 10px;
    width: 44px;
    height: 44px;
    font-size: 20px;
    align-items: center;
    justify-content: center;
}
.mobile-nav {
    display: none;
    background: #111C2E;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    margin-top: 8px;
    padding: 14px;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.mobile-nav.show {
    display: grid !important;
}
.mobile-nav .nav-link {
    display: block;
    text-align: center;
}
.mobile-nav .nav-link:last-child {
    grid-column: 1 / -1;
    background: var(--cta);
    color: #fff;
}
@media (min-width: 992px) {
    .mobile-nav {
        display: none !important;
    }
}

/* 文章首屏 */
.article-hero {
    padding: 64px 0 40px;
    background: linear-gradient(180deg, rgba(11, 18, 32, 0.96), rgba(11, 18, 32, 0.99)), url('/assets/images/backpic/back-2.png') center / cover;
    border-bottom: 1px solid var(--border);
}
.breadcrumb-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.breadcrumb-wrap a {
    color: var(--muted);
}
.breadcrumb-wrap a:hover {
    color: var(--primary);
}
.breadcrumb-wrap .sep {
    color: var(--muted-dark);
}
.breadcrumb-wrap .current {
    color: var(--primary);
}
.article-heading {
    max-width: 860px;
}
.article-heading h1 {
    font-size: 44px;
    line-height: 1.25;
    font-weight: 700;
    margin: 0 0 18px;
    color: #fff;
}
.article-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--muted);
    font-size: 13px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.meta-item.cat {
    background: rgba(0, 212, 162, 0.12);
    color: var(--primary);
    border-color: rgba(0, 212, 162, 0.2);
}

/* 正文区域 */
.article-main {
    padding: 48px 0 72px;
}
.article-content-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow);
}
.article-body {
    max-width: 760px;
    margin: 0 auto;
    color: #D4DCE8;
    font-size: 16px;
    line-height: 1.85;
}
.article-body h2 {
    font-size: 28px;
    margin-top: 40px;
    margin-bottom: 16px;
    padding-left: 12px;
    border-left: 4px solid var(--primary);
    color: #fff;
}
.article-body h3 {
    font-size: 20px;
    margin-top: 28px;
    margin-bottom: 12px;
    color: #fff;
}
.article-body p {
    margin: 0 0 18px;
}
.article-body ul,
.article-body ol {
    margin: 0 0 18px;
    padding-left: 24px;
}
.article-body li {
    margin-bottom: 6px;
}
.article-body img {
    border-radius: 12px;
    margin: 24px 0;
}
.article-body blockquote {
    border-left: 4px solid var(--accent);
    background: rgba(245, 166, 35, 0.08);
    padding: 14px 20px;
    border-radius: 8px;
    margin: 24px 0;
    color: var(--muted);
}
.article-body a {
    color: var(--primary);
    border-bottom: 1px solid rgba(0, 212, 162, 0.3);
}
.article-body a:hover {
    border-bottom-color: var(--primary);
}
.article-empty {
    text-align: center;
    padding: 48px 24px;
    color: var(--muted);
    font-size: 15px;
}
.article-empty a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    color: var(--primary);
}

/* 文章底部 */
.article-footer {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
}
.article-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.tag-pill {
    display: inline-flex;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--muted);
    font-size: 13px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: border-color 0.2s, color 0.2s;
}
.tag-pill:hover {
    color: var(--primary);
    border-color: var(--border-hover);
}
.article-pager {
    display: flex;
    gap: 16px;
    margin-top: 24px;
}
.pager-item {
    flex: 1;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 16px 18px;
    color: var(--muted);
    font-size: 14px;
    transition: border-color 0.2s, background 0.2s, color 0.2s;
}
.pager-item:hover {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
}
.pager-item small {
    display: block;
    color: var(--muted-dark);
    font-size: 12px;
    margin-bottom: 4px;
}
.pager-item.next {
    text-align: right;
}

/* 区块通用 */
.section-block {
    padding: 80px 0;
}
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}
.section-head h2 {
    font-size: 32px;
    margin: 0 0 6px;
    font-weight: 700;
    color: #fff;
}
.section-head p {
    color: var(--muted);
    margin: 0;
    font-size: 14px;
}
.section-link {
    color: var(--primary);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* 相关推荐 */
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.related-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
}
.related-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}
.related-body {
    padding: 20px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.related-body .tag-pill {
    align-self: flex-start;
    margin-bottom: 10px;
}
.related-body h3 {
    font-size: 17px;
    margin: 0 0 8px;
    color: var(--text);
    line-height: 1.4;
}
.related-body p {
    font-size: 14px;
    color: var(--muted);
    margin: 0 0 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-link {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--primary);
    font-size: 14px;
}

/* FAQ */
.faq-section {
    padding: 80px 0;
    background: #0D1526;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.faq-wrap {
    max-width: 780px;
    margin: 0 auto;
}
.accordion-item {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    border-radius: 12px !important;
    margin-bottom: 12px;
    overflow: hidden;
}
.accordion-button {
    background: transparent;
    color: var(--text);
    font-weight: 600;
    font-size: 15px;
    padding: 18px 20px;
    box-shadow: none;
}
.accordion-button:not(.collapsed) {
    background: rgba(0, 212, 162, 0.08);
    color: var(--primary);
}
.accordion-button:focus {
    box-shadow: 0 0 0 3px rgba(0, 212, 162, 0.2);
}
.accordion-button::after {
    filter: brightness(0) invert(1);
}
.accordion-body {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
}

/* CTA */
.cta-section {
    padding: 80px 0;
}
.cta-box {
    position: relative;
    background: linear-gradient(135deg, rgba(0, 212, 162, 0.14), rgba(21, 31, 49, 0.96)), url('/assets/images/backpic/back-1.png') center / cover;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 64px;
    text-align: center;
    overflow: hidden;
}
.cta-box h2 {
    font-size: 32px;
    margin: 0 0 10px;
    font-weight: 700;
    color: #fff;
}
.cta-box p {
    color: var(--muted);
    margin: 0 0 24px;
}
.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.download-btn {
    width: 210px;
    height: 56px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    color: #fff;
    background: var(--cta);
    border: 1px solid var(--cta);
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.download-btn i {
    font-size: 20px;
}
.download-btn.alt {
    background: #19273E;
    color: var(--text);
    border: 1px solid var(--primary);
}
.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
    color: #fff;
}

/* 页脚 */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 64px 0 24px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
    gap: 32px;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}
.footer-desc {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
    margin-top: 14px;
    max-width: 280px;
}
.footer-col h4 {
    color: var(--text);
    font-size: 15px;
    margin-bottom: 16px;
}
.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-col li {
    margin-bottom: 10px;
}
.footer-col a {
    color: var(--muted);
    font-size: 14px;
}
.footer-col a:hover {
    color: var(--primary);
}
.footer-contact li {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 14px;
}
.footer-bottom {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    text-align: center;
    color: var(--muted-dark);
    font-size: 13px;
}

/* 响应式 */
@media (max-width: 991.98px) {
    .nav-links {
        display: none;
    }
    .btn-nav-cta {
        display: none;
    }
    .nav-toggler {
        display: inline-flex;
        margin-left: auto;
    }
    .nav-panel {
        padding: 0 12px;
        height: 64px;
    }
    .article-heading h1 {
        font-size: 36px;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 767.98px) {
    .section-block,
    .faq-section,
    .cta-section {
        padding: 48px 0;
    }
    .article-hero {
        padding: 40px 0 28px;
    }
    .article-main {
        padding: 32px 0 48px;
    }
    .article-content-card {
        padding: 24px;
    }
    .article-heading h1 {
        font-size: 30px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .article-pager {
        flex-direction: column;
    }
    .cta-box {
        padding: 40px 20px;
    }
    .download-btn {
        width: 100%;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* roulang page: category3 */
:root {
        --primary: #00D4A2;
        --primary-glow: rgba(0, 212, 162, 0.35);
        --accent: #F5A623;
        --cta: #FF5D3A;
        --bg: #0B1220;
        --card-bg: #151F31;
        --card-hover: #1B2740;
        --text-main: #E8EDF4;
        --text-sub: #8B9BB4;
        --text-disabled: #3A475C;
        --border: rgba(255, 255, 255, 0.06);
        --border-hover: rgba(0, 212, 162, 0.4);
        --radius-card: 16px;
        --radius-btn: 8px;
        --radius-pill: 16px;
        --shadow-card: 0 6px 20px rgba(0, 0, 0, 0.25);
        --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.45);
        --section-space: 96px;
        --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

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

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

    a {
        color: var(--text-main);
        text-decoration: none;
        transition: color .25s ease;
    }

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

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

    .container {
        max-width: 1200px;
        padding-left: 20px;
        padding-right: 20px;
    }

    section {
        padding-top: var(--section-space);
        padding-bottom: var(--section-space);
    }

    .section-head {
        text-align: center;
        margin-bottom: 52px;
    }

    .section-head h2 {
        font-size: 32px;
        font-weight: 700;
        color: var(--text-main);
        line-height: 1.3;
        letter-spacing: 0.5px;
        position: relative;
        display: inline-block;
        padding-bottom: 14px;
    }

    .section-head h2::after {
        content: "";
        position: absolute;
        left: 50%;
        bottom: 0;
        transform: translateX(-50%);
        width: 44px;
        height: 3px;
        border-radius: 2px;
        background: var(--primary);
    }

    .section-head p {
        color: var(--text-sub);
        font-size: 14px;
        margin-top: 12px;
        max-width: 560px;
        margin-left: auto;
        margin-right: auto;
    }

    /* ===== Header / Navigation ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1040;
        padding-top: 12px;
        pointer-events: none;
    }

    .site-header .container {
        pointer-events: auto;
    }

    .nav-panel {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        height: 72px;
        background: #111C2E;
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 0 16px 0 20px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
        backdrop-filter: blur(10px);
    }

    .nav-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 700;
        color: var(--text-main);
        white-space: nowrap;
        line-height: 1.2;
    }

    .nav-brand:hover {
        color: var(--text-main);
    }

    .brand-icon {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: rgba(0, 212, 162, 0.15);
        border: 1px solid rgba(0, 212, 162, 0.3);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        font-size: 18px;
        flex-shrink: 0;
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .nav-link {
        display: block;
        padding: 10px 16px;
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.06);
        font-size: 14px;
        font-weight: 500;
        color: var(--text-sub);
        white-space: nowrap;
        transition: all .25s ease;
        line-height: 1.4;
    }

    .nav-link:hover {
        background: rgba(255, 255, 255, 0.12);
        color: var(--primary);
    }

    .nav-link.active {
        background: rgba(0, 212, 162, 0.15);
        color: var(--primary);
        border: 1px solid rgba(0, 212, 162, 0.3);
    }

    .btn-nav-cta {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 44px;
        padding: 0 22px;
        background: var(--cta);
        color: #fff;
        font-size: 15px;
        font-weight: 600;
        border-radius: var(--radius-btn);
        white-space: nowrap;
        transition: all .25s ease;
        box-shadow: 0 4px 14px rgba(255, 93, 58, 0.25);
    }

    .btn-nav-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(255, 93, 58, 0.35);
        color: #fff;
    }

    .btn-nav-cta:active {
        transform: translateY(0);
        box-shadow: 0 2px 8px rgba(255, 93, 58, 0.3);
    }

    .nav-toggler {
        display: none;
        width: 42px;
        height: 42px;
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid var(--border);
        color: var(--text-main);
        font-size: 22px;
        align-items: center;
        justify-content: center;
    }

    .nav-toggler:hover {
        background: rgba(255, 255, 255, 0.12);
        color: var(--primary);
    }

    .mobile-nav {
        margin-top: 8px;
        background: #111C2E;
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 16px;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .mobile-nav .nav-link {
        text-align: center;
    }

    /* ===== Hero ===== */
    .hero {
        position: relative;
        padding-top: 150px;
        padding-bottom: 90px;
        background-image: linear-gradient(rgba(11, 18, 32, 0.92), rgba(11, 18, 32, 0.96)), url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        overflow: hidden;
        border-bottom: 1px solid var(--border);
    }

    .hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background: radial-gradient(ellipse at 30% 40%, rgba(0, 212, 162, 0.10), transparent 60%);
        pointer-events: none;
    }

    .hero .container {
        position: relative;
        z-index: 1;
    }

    .hero-grid {
        display: grid;
        grid-template-columns: 1.05fr 0.95fr;
        gap: 56px;
        align-items: center;
    }

    .hero-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 14px;
        border-radius: 20px;
        background: rgba(0, 212, 162, 0.12);
        border: 1px solid rgba(0, 212, 162, 0.25);
        color: var(--primary);
        font-size: 12px;
        font-weight: 500;
        letter-spacing: 0.5px;
        margin-bottom: 18px;
    }

    .hero h1 {
        font-size: 44px;
        font-weight: 700;
        color: #fff;
        line-height: 1.25;
        letter-spacing: 0.5px;
        margin-bottom: 12px;
        position: relative;
        padding-left: 16px;
    }

    .hero h1::before {
        content: "";
        position: absolute;
        left: 0;
        top: 10px;
        bottom: 10px;
        width: 4px;
        border-radius: 2px;
        background: var(--primary);
    }

    .hero-sub {
        font-size: 15px;
        color: var(--text-sub);
        max-width: 420px;
        line-height: 1.6;
        margin-bottom: 32px;
    }

    .hero-btns {
        display: flex;
        gap: 14px;
        flex-wrap: wrap;
        margin-bottom: 36px;
    }

    .btn-primary-custom {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        height: 52px;
        padding: 0 28px;
        background: var(--primary);
        color: #0B1220;
        font-size: 15px;
        font-weight: 600;
        border-radius: var(--radius-btn);
        transition: all .25s ease;
        box-shadow: 0 4px 16px rgba(0, 212, 162, 0.3);
    }

    .btn-primary-custom:hover {
        box-shadow: 0 0 18px var(--primary-glow), 0 6px 18px rgba(0, 212, 162, 0.3);
        transform: translateY(-2px);
        color: #0B1220;
    }

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

    .btn-outline-custom {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        height: 52px;
        padding: 0 24px;
        background: transparent;
        border: 1px solid rgba(255, 255, 255, 0.3);
        color: var(--text-main);
        font-size: 15px;
        font-weight: 500;
        border-radius: var(--radius-btn);
        transition: all .25s ease;
    }

    .btn-outline-custom:hover {
        border-color: var(--primary);
        color: var(--primary);
        transform: translateY(-2px);
        background: rgba(0, 212, 162, 0.06);
    }

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

    .trust-item {
        display: flex;
        align-items: center;
        gap: 6px;
        font-size: 13px;
        color: var(--text-sub);
    }

    .trust-item i {
        color: var(--primary);
        font-size: 15px;
    }

    .hero-visual {
        position: relative;
    }

    .hero-visual .img-frame {
        border-radius: var(--radius-card);
        border: 1px solid rgba(0, 212, 162, 0.35);
        padding: 10px;
        background: rgba(21, 31, 49, 0.45);
        box-shadow: var(--shadow-card);
    }

    .hero-visual img {
        border-radius: 12px;
        width: 100%;
        object-fit: cover;
    }

    .hero-badge-float {
        position: absolute;
        bottom: 18px;
        left: -14px;
        background: var(--card-bg);
        border: 1px solid rgba(0, 212, 162, 0.3);
        border-radius: 12px;
        padding: 10px 16px;
        font-size: 12px;
        color: var(--text-main);
        box-shadow: var(--shadow-hover);
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .hero-badge-float i {
        color: var(--primary);
        font-size: 16px;
    }

    /* ===== Cards / Badge / Pills ===== */
    .badge-pill {
        display: inline-flex;
        align-items: center;
        padding: 4px 12px;
        border-radius: var(--radius-pill);
        font-size: 12px;
        font-weight: 500;
        line-height: 1.6;
        background: rgba(0, 212, 162, 0.15);
        color: var(--primary);
        border: 1px solid rgba(0, 212, 162, 0.2);
    }

    .badge-accent {
        background: rgba(245, 166, 35, 0.12);
        color: var(--accent);
        border-color: rgba(245, 166, 35, 0.25);
    }

    /* ===== Security System ===== */
    .security-system {
        background: var(--bg);
    }

    .security-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }

    .security-card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 28px 22px;
        transition: all .3s ease;
        box-shadow: var(--shadow-card);
    }

    .security-card:hover {
        transform: translateY(-4px);
        background: var(--card-hover);
        border-color: var(--border-hover);
        box-shadow: var(--shadow-hover);
    }

    .security-card .icon {
        width: 48px;
        height: 48px;
        border-radius: 12px;
        background: rgba(0, 212, 162, 0.12);
        border: 1px solid rgba(0, 212, 162, 0.25);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        font-size: 22px;
        margin-bottom: 16px;
    }

    .security-card h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 8px;
        line-height: 1.4;
    }

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

    /* ===== Compare Panel ===== */
    .compare-section {
        background: #0E172A;
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

    .compare-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 28px;
        align-items: stretch;
    }

    .compare-card {
        border-radius: var(--radius-card);
        padding: 36px 32px;
        box-shadow: var(--shadow-card);
    }

    .compare-card.official {
        background: linear-gradient(145deg, rgba(0, 212, 162, 0.08), rgba(21, 31, 49, 0.7));
        border: 1px solid rgba(0, 212, 162, 0.25);
    }

    .compare-card.risky {
        background: rgba(255, 93, 58, 0.04);
        border: 1px solid rgba(255, 93, 58, 0.18);
    }

    .compare-card h3 {
        font-size: 20px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 6px;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .compare-card .lead-desc {
        font-size: 14px;
        color: var(--text-sub);
        margin-bottom: 20px;
    }

    .compare-list {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .compare-list li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        padding: 9px 0;
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.6;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

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

    .compare-list li i {
        margin-top: 3px;
        font-size: 15px;
        flex-shrink: 0;
    }

    .compare-list li .bi-check-circle-fill {
        color: var(--primary);
    }

    .compare-list li .bi-exclamation-triangle-fill {
        color: var(--cta);
    }

    /* ===== Stats ===== */
    .stats-section {
        background-image: linear-gradient(rgba(11, 18, 32, 0.9), rgba(11, 18, 32, 0.94)), url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }

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

    .stat-card {
        background: rgba(21, 31, 49, 0.82);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 30px 20px;
        text-align: center;
        transition: all .3s ease;
    }

    .stat-card:hover {
        border-color: var(--border-hover);
        background: rgba(27, 39, 64, 0.9);
        transform: translateY(-3px);
    }

    .stat-card .stat-value {
        font-size: 34px;
        font-weight: 700;
        color: var(--primary);
        line-height: 1.2;
        margin-bottom: 6px;
    }

    .stat-card .stat-label {
        font-size: 13px;
        color: var(--text-sub);
        letter-spacing: 0.5px;
    }

    .stat-card .stat-icon {
        font-size: 22px;
        color: var(--accent);
        margin-bottom: 10px;
    }

    /* ===== Process / Timeline ===== */
    .process-section {
        background: var(--bg);
    }

    .process-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
        counter-reset: step;
    }

    .process-card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 28px 22px;
        position: relative;
        transition: all .3s ease;
        box-shadow: var(--shadow-card);
    }

    .process-card:hover {
        transform: translateY(-4px);
        border-color: var(--border-hover);
        background: var(--card-hover);
        box-shadow: var(--shadow-hover);
    }

    .process-card::before {
        counter-increment: step;
        content: "0" counter(step);
        position: absolute;
        top: 20px;
        right: 22px;
        font-size: 30px;
        font-weight: 700;
        color: rgba(255, 255, 255, 0.06);
        line-height: 1;
    }

    .process-card .step-icon {
        width: 44px;
        height: 44px;
        border-radius: 10px;
        background: rgba(245, 166, 35, 0.12);
        border: 1px solid rgba(245, 166, 35, 0.22);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent);
        font-size: 20px;
        margin-bottom: 16px;
    }

    .process-card h3 {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 8px;
    }

    .process-card p {
        font-size: 13px;
        color: var(--text-sub);
        line-height: 1.65;
    }

    /* ===== FAQ ===== */
    .faq-section {
        background: #0E172A;
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

    .faq-wrap {
        max-width: 780px;
        margin: 0 auto;
    }

    .faq-item {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: 12px;
        margin-bottom: 14px;
        overflow: hidden;
        transition: border-color .3s ease;
    }

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

    .faq-item:has(.show) {
        border-color: var(--primary);
    }

    .faq-header {
        margin: 0;
    }

    .faq-button {
        display: flex;
        align-items: center;
        gap: 12px;
        width: 100%;
        padding: 18px 20px;
        background: transparent;
        color: var(--text-main);
        font-size: 16px;
        font-weight: 600;
        text-align: left;
        border: none;
        position: relative;
        transition: color .25s ease;
    }

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

    .faq-button .faq-icon {
        width: 22px;
        height: 22px;
        border-radius: 50%;
        background: rgba(0, 212, 162, 0.15);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        font-size: 14px;
        flex-shrink: 0;
        transition: transform .3s ease;
    }

    .faq-button[aria-expanded="true"] .faq-icon {
        transform: rotate(45deg);
    }

    .faq-collapse .faq-body {
        padding: 0 20px 20px 54px;
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.7;
    }

    /* ===== CTA ===== */
    .cta-section {
        position: relative;
        background-image: linear-gradient(rgba(11, 18, 32, 0.9), rgba(11, 18, 32, 0.95)), url('/assets/images/backpic/back-3.png');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        text-align: center;
    }

    .cta-section h2 {
        font-size: 32px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 10px;
    }

    .cta-section .cta-sub {
        color: var(--text-sub);
        font-size: 15px;
        margin-bottom: 36px;
    }

    .cta-btns {
        display: flex;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
        margin-bottom: 20px;
    }

    .btn-download-lg {
        display: inline-flex;
        align-items: center;
        gap: 14px;
        min-width: 220px;
        height: 56px;
        padding: 0 24px;
        border-radius: 12px;
        background: var(--cta);
        color: #fff;
        transition: all .25s ease;
        box-shadow: 0 4px 16px rgba(255, 93, 58, 0.3);
    }

    .btn-download-lg:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(255, 93, 58, 0.4);
        color: #fff;
    }

    .btn-download-lg .dl-icon {
        font-size: 26px;
        line-height: 1;
    }

    .btn-download-lg .dl-text {
        text-align: left;
        line-height: 1.2;
    }

    .btn-download-lg .dl-text strong {
        display: block;
        font-size: 16px;
        font-weight: 600;
    }

    .btn-download-lg .dl-text span {
        font-size: 12px;
        opacity: 0.85;
    }

    .btn-download-secondary {
        display: inline-flex;
        align-items: center;
        gap: 14px;
        min-width: 220px;
        height: 56px;
        padding: 0 24px;
        border-radius: 12px;
        background: var(--card-bg);
        border: 1px solid var(--border);
        color: var(--text-main);
        transition: all .25s ease;
    }

    .btn-download-secondary:hover {
        border-color: var(--primary);
        color: var(--primary);
        transform: translateY(-2px);
        background: rgba(0, 212, 162, 0.06);
    }

    .btn-download-secondary .dl-icon {
        font-size: 26px;
        line-height: 1;
    }

    .btn-download-secondary .dl-text {
        text-align: left;
        line-height: 1.2;
    }

    .btn-download-secondary .dl-text strong {
        display: block;
        font-size: 16px;
        font-weight: 600;
    }

    .btn-download-secondary .dl-text span {
        font-size: 12px;
        color: var(--text-sub);
    }

    .cta-note {
        font-size: 12px;
        color: var(--text-disabled);
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #0A101C;
        border-top: 1px solid var(--border);
        padding: 56px 0 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
        gap: 32px;
        margin-bottom: 36px;
    }

    .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 12px;
    }

    .footer-brand:hover {
        color: var(--text-main);
    }

    .footer-desc {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.7;
        max-width: 300px;
    }

    .footer-col h4 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 14px;
    }

    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .footer-col ul li {
        margin-bottom: 8px;
    }

    .footer-col ul li a {
        font-size: 14px;
        color: var(--text-sub);
        transition: color .25s ease;
    }

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

    .footer-contact li {
        font-size: 14px;
        color: var(--text-sub);
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .footer-contact li i {
        color: var(--primary);
        font-size: 15px;
    }

    .footer-bottom {
        border-top: 1px solid var(--border);
        padding: 18px 0;
        text-align: center;
        font-size: 13px;
        color: var(--text-disabled);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1199px) {
        .nav-links {
            gap: 6px;
        }

        .nav-link {
            padding: 9px 12px;
            font-size: 13px;
        }

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

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

    @media (max-width: 991px) {
        .nav-links {
            display: none;
        }

        .nav-panel .btn-nav-cta {
            display: none;
        }

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

        .nav-panel {
            height: 64px;
        }

        .hero-grid {
            grid-template-columns: 1fr;
            gap: 40px;
        }

        .hero {
            padding-top: 120px;
        }

        .hero-visual {
            max-width: 520px;
        }

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

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

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

    @media (max-width: 767px) {
        :root {
            --section-space: 48px;
        }

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

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

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

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

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

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

        .hero-btns .btn-primary-custom,
        .hero-btns .btn-outline-custom {
            width: 100%;
        }

        .cta-btns {
            flex-direction: column;
            align-items: center;
        }

        .btn-download-lg,
        .btn-download-secondary {
            width: 100%;
            min-width: 0;
        }

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

        .mobile-nav {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 520px) {
        .nav-panel {
            padding-left: 14px;
            padding-right: 12px;
        }

        .nav-brand {
            font-size: 17px;
        }

        .brand-icon {
            width: 30px;
            height: 30px;
            font-size: 15px;
        }

        .hero {
            padding-top: 100px;
            padding-bottom: 48px;
        }

        .hero h1 {
            padding-left: 12px;
        }

        .compare-card {
            padding: 24px 18px;
        }

        .faq-collapse .faq-body {
            padding-left: 50px;
        }
    }

    /* Focus accessibility */
    a:focus-visible,
    button:focus-visible,
    .btn-nav-cta:focus-visible,
    .nav-toggler:focus-visible,
    .faq-button:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 3px;
    }

/* roulang page: category2 */
/* ===== Design Tokens ===== */
        :root {
            --primary: #00D4A2;
            --amber: #F5A623;
            --bg: #0B1220;
            --bg-deep: #0A101C;
            --card-bg: #151F31;
            --card-hover: #1B2740;
            --text: #E8EDF4;
            --text-secondary: #8B9BB4;
            --disabled: #3A475C;
            --cta: #FF5D3A;
            --border: rgba(255, 255, 255, 0.06);
            --border-primary: rgba(0, 212, 162, 0.4);
            --radius-lg: 16px;
            --radius-md: 10px;
            --shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.45);
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--text);
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

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

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

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: 96px 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-head .section-label {
            display: inline-block;
            font-size: 12px;
            color: var(--primary);
            background: rgba(0, 212, 162, 0.15);
            border-radius: 16px;
            padding: 4px 16px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            font-weight: 500;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin: 0 0 12px;
            line-height: 1.3;
        }

        .section-head .section-sub {
            color: var(--text-secondary);
            font-size: 14px;
            max-width: 560px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .section-head h2 {
                font-size: 24px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            padding: 16px 0 0;
            background: linear-gradient(180deg, rgba(11, 18, 32, 0.95) 0%, rgba(11, 18, 32, 0) 100%);
        }

        .nav-panel {
            background: #111C2E;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 16px;
            min-height: 72px;
            gap: 16px;
        }

        .nav-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            padding: 6px 8px;
            border-radius: 8px;
        }

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

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: rgba(0, 212, 162, 0.2);
            border-radius: 10px;
            color: var(--primary);
            font-size: 18px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            overflow-x: auto;
        }

        .nav-links .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border-radius: 10px;
            padding: 10px 16px;
            white-space: nowrap;
            transition: background 0.25s ease, color 0.25s ease;
        }

        .nav-links .nav-link:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--primary);
        }

        .nav-links .nav-link.active {
            background: rgba(0, 212, 162, 0.15);
            color: var(--primary);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--cta);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: 10px;
            padding: 10px 20px;
            white-space: nowrap;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            flex-shrink: 0;
        }

        .btn-nav-cta:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 93, 58, 0.3);
        }

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

        .nav-toggler {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 10px;
            color: var(--text);
            font-size: 24px;
            flex-shrink: 0;
        }

        .mobile-nav {
            background: #111C2E;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
            margin-top: 12px;
            padding: 16px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
        }

        .mobile-nav .nav-link {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border-radius: 10px;
            padding: 12px 16px;
            text-align: center;
            transition: background 0.25s ease, color 0.25s ease;
        }

        .mobile-nav .nav-link:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--primary);
        }

        .mobile-nav .nav-link.active {
            background: rgba(0, 212, 162, 0.15);
            color: var(--primary);
        }

        .mobile-nav .nav-link:last-child {
            grid-column: span 2;
            background: var(--cta);
            color: #fff;
        }

        @media (max-width: 991.98px) {
            .nav-links {
                display: none;
            }
            .btn-nav-cta {
                display: none;
            }
            .nav-toggler {
                display: inline-flex;
            }
        }

        @media (max-width: 575.98px) {
            .site-header {
                padding-top: 8px;
            }
            .nav-panel {
                padding: 6px 12px;
                min-height: 60px;
            }
            .nav-brand {
                font-size: 18px;
            }
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 180px 0 96px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(11, 18, 32, 0.55) 0%, rgba(11, 18, 32, 0.88) 70%, rgba(11, 18, 32, 0.96) 100%);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .hero-wrapper {
            display: flex;
            align-items: center;
            gap: 64px;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 212, 162, 0.15);
            border-radius: 16px;
            padding: 6px 16px;
            font-size: 12px;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid rgba(0, 212, 162, 0.2);
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -1px;
            margin: 0 0 16px;
            max-width: 560px;
        }

        .page-hero h1 .hero-line {
            display: block;
        }

        .hero-sub {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 520px;
            margin-bottom: 28px;
        }

        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .trust-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 6px 14px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .trust-item i {
            color: var(--primary);
            font-size: 14px;
        }

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

        .hero-cover {
            position: relative;
            border-radius: var(--radius-lg);
            padding: 10px;
            background: linear-gradient(135deg, rgba(0, 212, 162, 0.25) 0%, rgba(0, 212, 162, 0.05) 50%, rgba(245, 166, 35, 0.2) 100%);
            box-shadow: var(--shadow-hover);
        }

        .hero-cover img {
            border-radius: 12px;
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }

        .hero-cover::after {
            content: "";
            position: absolute;
            inset: 4px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 14px;
            pointer-events: none;
        }

        @media (max-width: 991.98px) {
            .hero-wrapper {
                flex-direction: column;
                gap: 40px;
            }
            .hero-copy {
                flex: 1 1 auto;
                text-align: center;
            }
            .page-hero h1 {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-sub {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-trust {
                justify-content: center;
            }
            .hero-visual {
                flex: 1 1 auto;
                max-width: 520px;
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 140px 0 56px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
        }

        /* ===== Play Mode Cards ===== */
        .play-modes {
            background: var(--bg);
        }

        .mode-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 12px;
            height: 100%;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .mode-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-primary);
            background: var(--card-hover);
        }

        .mode-card .card-img {
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 16px;
            position: relative;
        }

        .mode-card .card-img img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .mode-card .mode-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(11, 18, 32, 0.75);
            border: 1px solid rgba(0, 212, 162, 0.4);
            color: var(--primary);
            border-radius: 16px;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }

        .mode-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 0 0 8px;
            padding: 0 8px;
        }

        .mode-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
            margin: 0;
            padding: 0 8px 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Flow Steps ===== */
        .flow-section {
            background: #0D1524;
            position: relative;
        }

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

        .step-item {
            position: relative;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            transition: border-color 0.3s ease, transform 0.3s ease;
        }

        .step-item:hover {
            border-color: var(--border-primary);
            transform: translateY(-4px);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 212, 162, 0.15);
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        .step-arrow {
            position: absolute;
            top: 50%;
            right: -20px;
            transform: translateY(-50%);
            color: var(--primary);
            font-size: 20px;
            z-index: 2;
            opacity: 0.6;
        }

        @media (max-width: 991.98px) {
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-arrow {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .flow-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Data Panel ===== */
        .data-section {
            background: var(--bg);
        }

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

        .data-item {
            background: linear-gradient(145deg, rgba(21, 31, 49, 0.9) 0%, rgba(21, 31, 49, 0.6) 100%);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: border-color 0.3s ease, transform 0.3s ease;
        }

        .data-item:hover {
            border-color: var(--border-primary);
            transform: translateY(-3px);
        }

        .data-icon {
            width: 48px;
            height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: rgba(0, 212, 162, 0.12);
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 16px;
        }

        .data-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 4px;
        }

        .data-label {
            font-size: 13px;
            color: var(--text-secondary);
        }

        @media (max-width: 991.98px) {
            .data-panel {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .data-panel {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #0D1524;
        }

        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: var(--border-primary);
        }

        .accordion-button {
            background: transparent;
            color: var(--text);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 20px;
            line-height: 1.4;
            box-shadow: none;
            border: none;
        }

        .accordion-button:not(.collapsed) {
            background: transparent;
            color: var(--primary);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(0, 212, 162, 0.4);
            z-index: 2;
        }

        .accordion-button::after {
            background-image: none;
            font-family: "bootstrap-icons";
            content: "\F4FE";
            color: var(--primary);
            font-size: 18px;
            transition: transform 0.3s ease;
        }

        .accordion-button:not(.collapsed)::after {
            content: "\F2EA";
            transform: none;
            color: var(--primary);
        }

        .accordion-body {
            padding: 0 20px 20px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg);
            padding: 96px 0;
            position: relative;
        }

        .cta-inner {
            background: linear-gradient(145deg, #151F31 0%, #111A2A 100%);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 24px;
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-inner::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(0, 212, 162, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 700;
            margin: 0 0 12px;
        }

        .cta-inner .cta-desc {
            color: var(--text-secondary);
            font-size: 16px;
            margin: 0 0 32px;
        }

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

        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            width: 220px;
            height: 56px;
            border-radius: 12px;
            background: var(--cta);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            padding: 0 20px;
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            justify-content: center;
            border: 1px solid transparent;
        }

        .btn-download:hover {
            background: #FF6B4A;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 93, 58, 0.3);
        }

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

        .btn-download-secondary {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            width: 220px;
            height: 56px;
            border-radius: 12px;
            background: var(--card-bg);
            color: var(--text);
            border: 1px solid rgba(0, 212, 162, 0.5);
            font-size: 16px;
            font-weight: 600;
            padding: 0 20px;
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            justify-content: center;
        }

        .btn-download-secondary:hover {
            background: var(--card-hover);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 212, 162, 0.15);
        }

        .btn-download i {
            font-size: 22px;
        }

        .btn-download .btn-content {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            line-height: 1.2;
        }

        .btn-download .btn-content small {
            font-size: 12px;
            font-weight: 400;
            opacity: 0.75;
        }

        .cta-version {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 8px 0 0;
        }

        @media (max-width: 575.98px) {
            .cta-section {
                padding: 56px 0;
                padding-bottom: 120px;
            }
            .cta-inner {
                padding: 40px 20px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-download,
            .btn-download-secondary {
                width: 100%;
                max-width: 320px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

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

        .footer-desc {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

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

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .footer-contact i {
            color: var(--primary);
            font-size: 15px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
            color: var(--disabled);
            font-size: 13px;
        }

        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

/* roulang page: category4 */
/* ===== Design Variables ===== */
        :root {
            --primary: #00D4A2;
            --primary-rgb: 0, 212, 162;
            --secondary: #F5A623;
            --secondary-rgb: 245, 166, 35;
            --bg: #0B1220;
            --card-bg: #151F31;
            --card-hover: #1B2740;
            --nav-bg: #111C2E;
            --text-main: #E8EDF4;
            --text-muted: #8B9BB4;
            --text-disabled: #3A475C;
            --cta-color: #FF5D3A;
            --border-base: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(0, 212, 162, 0.4);
            --border-strong: rgba(255, 255, 255, 0.08);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --radius-pill: 24px;
            --shadow-base: 0 6px 20px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.45);
            --transition-base: all .25s ease;
        }

        /* ===== Reset / Base ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            background: var(--bg);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (min-width: 1200px) {
            .container {
                max-width: 1200px;
            }
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1200px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            padding-top: 16px;
            position: relative;
            z-index: 100;
        }
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--nav-bg);
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-lg);
            padding: 12px 16px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }
        .nav-brand .brand-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(var(--primary-rgb), 0.15);
            color: var(--primary);
            border-radius: 10px;
            font-size: 18px;
        }
        .nav-links {
            display: flex;
            gap: 8px;
            margin-left: auto;
        }
        .nav-link {
            padding: 10px 16px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
            white-space: nowrap;
            transition: var(--transition-base);
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--primary);
        }
        .nav-link.active {
            background: rgba(255, 255, 255, 0.12);
            color: var(--primary);
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            background: var(--cta-color);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: none;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(255, 93, 58, 0.3);
            color: #fff;
        }
        .nav-toggler {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--border-strong);
            background: rgba(255, 255, 255, 0.06);
            border-radius: 10px;
            color: var(--text-main);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            gap: 8px;
            padding: 14px 0;
            margin-top: 8px;
            border-top: 1px solid var(--border-base);
        }
        .mobile-nav .nav-link {
            text-align: center;
            border-radius: 10px;
        }
        .mobile-nav .nav-link:last-child {
            grid-column: 1 / -1;
            background: var(--cta-color);
            color: #fff;
            font-weight: 600;
        }
        .mobile-nav.collapse.show {
            display: grid;
            grid-template-columns: 1fr 1fr;
        }
        .mobile-nav.collapse:not(.show) {
            display: none;
        }
        @media (min-width: 992px) {
            .nav-toggler {
                display: none !important;
            }
            .mobile-nav {
                display: none !important;
            }
        }
        @media (max-width: 991.98px) {
            .nav-links {
                display: none !important;
            }
            .nav-toggler {
                display: flex !important;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 110px 0 72px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(11, 18, 32, 0.72), rgba(11, 18, 32, 0.92));
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 32px;
        }
        .page-breadcrumb a {
            color: var(--text-muted);
        }
        .page-breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb-sep {
            color: var(--text-disabled);
        }
        .breadcrumb-current {
            color: var(--primary);
        }
        .banner-content {
            max-width: 760px;
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            font-size: 12px;
            border-radius: var(--radius-pill);
            background: rgba(var(--primary-rgb), 0.15);
            color: var(--primary);
            border: 1px solid rgba(var(--primary-rgb), 0.3);
            margin-bottom: 16px;
        }
        .page-banner h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            margin-bottom: 12px;
        }
        .banner-desc {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 28px;
            max-width: 620px;
            line-height: 1.6;
        }
        .banner-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== Buttons ===== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-sm);
            transition: var(--transition-base);
            box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.2);
        }
        .btn-primary-custom:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 0 18px rgba(var(--primary-rgb), 0.35);
            transform: translateY(-2px);
        }
        .btn-primary-custom:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            background: transparent;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-sm);
            transition: var(--transition-base);
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.08);
            transform: translateY(-2px);
        }
        .btn-outline-custom:focus {
            outline: 2px solid rgba(var(--primary-rgb), 0.5);
            outline-offset: 2px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-head {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 44px;
        }
        .section-tag {
            display: inline-block;
            padding: 3px 14px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            color: var(--secondary);
            background: rgba(var(--secondary-rgb), 0.12);
            border: 1px solid rgba(var(--secondary-rgb), 0.25);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .section-sub {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
        }

        /* ===== Section 1: Info Overview ===== */
        .section-info {
            background: var(--bg);
        }
        .info-card {
            background: var(--card-bg);
            border: 1px solid var(--border-base);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            height: 100%;
            transition: var(--transition-base);
        }
        .info-card:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-base);
        }
        .info-card i {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: rgba(var(--primary-rgb), 0.14);
            color: var(--primary);
            border-radius: 12px;
            font-size: 20px;
            margin-bottom: 16px;
        }
        .info-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .info-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.55;
            margin-bottom: 0;
        }

        /* ===== Section 2: Focus Timeline ===== */
        .section-focus {
            background: #0D1628;
        }
        .focus-timeline {
            max-width: 800px;
            margin: 0 auto;
        }
        .focus-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--card-bg);
            border: 1px solid var(--border-base);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            transition: var(--transition-base);
        }
        .focus-item:last-child {
            margin-bottom: 0;
        }
        .focus-item:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
            transform: translateX(4px);
        }
        .focus-index {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.12);
            border-radius: 12px;
        }
        .focus-content {
            flex: 1;
        }
        .focus-content h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .focus-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .focus-badge {
            flex-shrink: 0;
            padding: 4px 14px;
            font-size: 12px;
            border-radius: var(--radius-pill);
            background: rgba(var(--secondary-rgb), 0.12);
            color: var(--secondary);
            border: 1px solid rgba(var(--secondary-rgb), 0.25);
            white-space: nowrap;
        }

        /* ===== Section 3: Version Grid ===== */
        .section-grid {
            background: var(--bg);
        }
        .version-card {
            height: 100%;
            background: var(--card-bg);
            border: 1px solid var(--border-base);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .version-card:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .version-card a {
            display: block;
            color: inherit;
            height: 100%;
        }
        .card-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .version-card:hover .card-cover img {
            transform: scale(1.04);
        }
        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            background: rgba(11, 18, 32, 0.75);
            color: var(--primary);
            font-size: 12px;
            border: 1px solid rgba(var(--primary-rgb), 0.3);
            backdrop-filter: blur(4px);
            line-height: 1.4;
        }
        .card-body {
            padding: 20px 20px 24px;
        }
        .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 16px;
        }
        .card-arrow {
            font-size: 13px;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 500;
        }
        .card-arrow i {
            transition: transform .2s ease;
        }
        .version-card:hover .card-arrow i {
            transform: translateX(4px);
        }

        /* ===== Section 4: Process ===== */
        .section-process {
            background: #0D1628;
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 8px;
        }
        .step-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding: 32px 20px;
            background: var(--card-bg);
            border: 1px solid var(--border-base);
            border-radius: var(--radius-lg);
            transition: var(--transition-base);
            height: 100%;
        }
        .step-item:hover {
            border-color: var(--border-hover);
            background: var(--card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-base);
        }
        .step-node {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(var(--primary-rgb), 0.14);
            color: var(--primary);
            border-radius: 16px;
            font-size: 24px;
            margin-bottom: 16px;
            border: 1px solid rgba(var(--primary-rgb), 0.25);
        }
        .step-item h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.55;
            margin-bottom: 0;
            max-width: 180px;
        }

        /* ===== Section 5: FAQ ===== */
        .section-faq {
            background: var(--bg);
        }
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(var(--primary-rgb), 0.25);
        }
        .faq-item:has(.accordion-button:not(.collapsed)) {
            border-color: var(--border-hover);
        }
        .faq-item .accordion-header {
            margin: 0;
        }
        .faq-item .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 20px;
            box-shadow: none;
            border: none;
            border-radius: 0;
            line-height: 1.5;
        }
        .faq-item .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.06);
        }
        .faq-item .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.2);
        }
        .faq-item .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2300D4A2'%3e%3cpath fill-rule='evenodd' d='M8 2a.75.75 0 0 1 .75.75v4.5h4.5a.75.75 0 0 1 0 1.5h-4.5v4.5a.75.75 0 0 1-1.5 0v-4.5h-4.5a.75.75 0 0 1 0-1.5h4.5v-4.5A.75.75 0 0 1 8 2Z'/%3e%3c/svg%3e");
            transition: transform .3s ease;
            background-size: 14px;
        }
        .faq-item .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2300D4A2'%3e%3cpath fill-rule='evenodd' d='M2 8a.75.75 0 0 1 .75-.75h10.5a.75.75 0 0 1 0 1.5H2.75A.75.75 0 0 1 2 8Z'/%3e%3c/svg%3e");
        }
        .faq-item .accordion-body {
            padding: 0 20px 18px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ===== Section 6: CTA ===== */
        .section-cta {
            background: var(--bg);
            padding: 48px 0 96px;
        }
        .cta-panel {
            background: linear-gradient(120deg, rgba(var(--primary-rgb), 0.12), rgba(17, 28, 46, 0.9)), var(--card-bg);
            border: 1px solid rgba(var(--primary-rgb), 0.25);
            border-radius: var(--radius-lg);
            padding: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-base);
        }
        .cta-text h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cta-text p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 0;
        }
        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .cta-actions .btn-primary-custom,
        .cta-actions .btn-outline-custom {
            min-width: 180px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0A101C;
            border-top: 1px solid var(--border-strong);
            padding: 64px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .footer-brand .brand-icon {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(var(--primary-rgb), 0.15);
            color: var(--primary);
            border-radius: 10px;
            font-size: 16px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-contact i {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-base);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-disabled);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .section {
                padding: 64px 0;
            }
            .page-banner {
                padding: 90px 0 56px;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767.98px) {
            .section {
                padding: 48px 0;
            }
            .page-banner {
                padding: 72px 0 40px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .banner-actions {
                flex-direction: column;
                width: 100%;
            }
            .banner-actions .btn-primary-custom,
            .banner-actions .btn-outline-custom {
                width: 100%;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .focus-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 20px;
            }
            .focus-badge {
                align-self: flex-start;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .cta-panel {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-actions {
                width: 100%;
            }
            .cta-actions .btn-primary-custom,
            .cta-actions .btn-outline-custom {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .mobile-nav.collapse.show {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 575.98px) {
            .nav-brand {
                font-size: 17px;
            }
            .nav-panel {
                padding: 10px 12px;
            }
            .cta-text h2 {
                font-size: 22px;
            }
        }