/* roulang page: index */
:root {
  --bg-primary: #0B1F1A;
  --bg-secondary: #122A23;
  --bg-elevated: #17352C;
  --brand-primary: #00E29A;
  --action-primary: #FF8A3C;
  --action-hover: #FF9E5E;
  --text-primary: #EFF3EF;
  --text-secondary: #A8BCB2;
  --border-color: rgba(255,255,255,0.10);
  --badge-bg: rgba(0,226,154,0.12);
  --warning: #FFC857;
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 4px 16px rgba(0,0,0,0.25);
  --shadow-hover: 0 10px 30px rgba(0,0,0,0.40);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --font-num: "Inter", "Helvetica Neue", Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--brand-primary); text-decoration: none; transition: all .25s ease-out; }
a:hover { color: var(--action-hover); }
ul, ol { list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, select, textarea { font-family: inherit; }
::selection { background: rgba(0,226,154,0.25); }
:focus-visible { outline: 2px solid var(--brand-primary); outline-offset: 2px; border-radius: 4px; }

/* ===== Header & Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  background: rgba(11,31,26,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: .5px;
}
.site-logo:hover { color: var(--text-primary); }
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0B1F1A;
  font-size: 17px;
  flex-shrink: 0;
}
.site-nav { display: flex; align-items: center; }
.nav-list { display: flex; gap: 6px; }
.nav-list a {
  display: inline-block;
  padding: 10px 18px;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
  position: relative;
  line-height: 1.4;
}
.nav-list a:hover { color: #fff; background: rgba(255,255,255,0.06); }
.nav-list a.active { color: var(--brand-primary); }
.nav-list a.active::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 4px;
  width: 24px;
  height: 2px;
  background: var(--brand-primary);
  border-radius: 2px;
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.06);
  border-radius: 10px;
}
.menu-toggle .bar {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all .3s ease;
}
.menu-toggle.open .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open .bar:nth-child(2) { opacity: 0; }
.menu-toggle.open .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 140px 0 80px;
  background-color: var(--bg-primary);
  background-image:
    repeating-linear-gradient(-30deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 18px),
    radial-gradient(circle at 88% 82%, rgba(0,226,154,0.10) 0, transparent 45%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  right: -120px;
  bottom: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,226,154,0.10) 0%, transparent 65%);
  pointer-events: none;
}
.hero .grid-container { position: relative; z-index: 2; }
.hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-badges { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--badge-bg);
  color: var(--brand-primary);
  border-radius: var(--radius-tag);
  font-size: 13px;
  font-weight: 600;
}
.hero-preview {
  position: relative;
  border-radius: 14px;
  border: 2px solid rgba(0,226,154,0.30);
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0,0,0,0.45);
  background: var(--bg-secondary);
}
.hero-preview img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.preview-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-primary);
  background: linear-gradient(180deg, transparent, rgba(0,0,0,0.72));
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* ===== Stats ===== */
.stats-bar {
  background: var(--bg-secondary);
  padding: 28px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.stat-item { text-align: center; padding: 8px 12px; }
.stat-item .stat-num {
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 800;
  color: var(--brand-primary);
  line-height: 1.3;
}
.stat-item .stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ===== Common section ===== */
.section { padding: 88px 0; }
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head .section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-primary);
  background: var(--badge-bg);
  padding: 6px 16px;
  border-radius: var(--radius-tag);
  margin-bottom: 16px;
  letter-spacing: .5px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 12px;
}
.section-head p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}
.section-title-left {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
}
.section-title-left::before {
  content: '';
  width: 4px;
  height: 24px;
  background: var(--brand-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

/* ===== Features ===== */
.features { background: var(--bg-primary); }
.feature-row {
  display: flex;
  align-items: center;
  margin-bottom: 88px;
}
.feature-row:last-child { margin-bottom: 0; }
.feature-text h2 { margin-bottom: 20px; }
.feature-text p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.8;
  max-width: 480px;
}
.feature-list { display: grid; gap: 12px; }
.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--text-primary);
  padding: 10px 16px;
  background: var(--bg-secondary);
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.04);
}
.feature-list li i {
  color: var(--brand-primary);
  font-size: 14px;
  width: 20px;
  text-align: center;
}
.feature-image {
  background: var(--bg-secondary);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255,255,255,0.06);
}
.feature-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.feature-reverse .feature-text { order: 2; }
.feature-reverse .feature-image { order: 1; }
.feature-row .cell { padding: 0 24px; }

/* ===== Carousel ===== */
.showcase {
  background: var(--bg-secondary);
  position: relative;
}
.carousel-wrap {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}
.carousel-viewport {
  overflow: hidden;
  border-radius: 14px;
  background: var(--bg-elevated);
  box-shadow: var(--shadow-card);
}
.carousel-track {
  display: flex;
  transition: transform .3s ease-out;
}
.carousel-slide { flex: 0 0 100%; min-width: 0; }
.carousel-slide img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.slide-caption {
  padding: 32px 24px;
  text-align: center;
  background: var(--bg-elevated);
}
.slide-caption h3 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.slide-caption p { font-size: 14px; color: var(--text-secondary); }
.carousel-arrow {
  position: absolute;
  top: 40%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-elevated);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all .25s ease;
  z-index: 5;
}
.carousel-arrow:hover { background: var(--brand-primary); color: var(--bg-primary); }
.carousel-arrow.prev { left: -22px; }
.carousel-arrow.next { right: -22px; }
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}
.carousel-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.30);
  transition: all .25s ease;
}
.carousel-dots .dot.active {
  width: 24px;
  background: var(--brand-primary);
}

/* ===== System requirements ===== */
.sys-req { background: var(--bg-primary); }
.sys-platform-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-secondary);
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.04);
  margin-bottom: 16px;
  transition: all .25s ease;
}
.sys-platform-item:hover {
  border-color: rgba(0,226,154,0.35);
  transform: translateX(4px);
  box-shadow: var(--shadow-card);
}
.sys-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--badge-bg);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.sys-info h3 { font-size: 17px; font-weight: 700; margin-bottom: 2px; }
.sys-info p { font-size: 14px; color: var(--text-secondary); }
.sys-version-card {
  background: var(--bg-elevated);
  border-radius: 14px;
  padding: 36px 32px;
  border-top: 3px solid var(--brand-primary);
  box-shadow: var(--shadow-card);
  position: relative;
}
.sys-version-card::before {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(0,226,154,0.18);
  border-radius: 8px;
  pointer-events: none;
}
.sys-version-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.sys-version-num {
  font-family: var(--font-num);
  font-size: 36px;
  font-weight: 800;
  color: var(--brand-primary);
  line-height: 1.2;
  margin-bottom: 24px;
}
.sys-version-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.sys-version-grid .field-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.sys-version-grid .field-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

/* ===== Testimonials ===== */
.testimonials { background: var(--bg-secondary); }
.testimonial-card {
  background: var(--bg-secondary);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  padding: 28px 24px;
  position: relative;
  height: 100%;
  transition: all .25s ease;
  box-shadow: var(--shadow-card);
}
.testimonial-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0,226,154,0.40);
  box-shadow: var(--shadow-hover);
}
.testimonial-source {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 12px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.06);
  padding: 3px 10px;
  border-radius: var(--radius-tag);
}
.testimonial-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #0B1F1A;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.testimonial-meta h3 { font-size: 15px; font-weight: 700; }
.testimonial-stars { color: var(--warning); font-size: 13px; letter-spacing: 2px; margin-top: 2px; }
.testimonial-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== News ===== */
.news-section { background: var(--bg-primary); }
.news-list { display: grid; gap: 16px; }
.news-item {
  display: flex;
  gap: 16px;
  align-items: center;
  background: var(--bg-secondary);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  padding: 16px;
  transition: all .25s ease;
}
.news-item:hover {
  background: var(--bg-elevated);
  border-color: rgba(0,226,154,0.30);
  box-shadow: var(--shadow-card);
}
.news-thumb {
  width: 100px;
  height: 100px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-body { flex: 1; min-width: 0; }
.news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.news-cat {
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-primary);
  background: var(--badge-bg);
  padding: 3px 12px;
  border-radius: var(--radius-tag);
}
.news-time { font-size: 13px; color: var(--text-secondary); font-family: var(--font-num); }
.news-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.5;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-title a { color: var(--text-primary); }
.news-title a:hover { color: var(--brand-primary); }
.news-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.news-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.news-link i { font-size: 12px; transition: transform .2s ease; }
.news-link:hover i { transform: translateX(3px); }
.news-empty {
  border: 1px dashed rgba(255,255,255,0.15);
  border-radius: 14px;
  padding: 48px 24px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 15px;
}
.news-empty i { font-size: 36px; color: rgba(255,255,255,0.20); display: block; margin-bottom: 12px; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-secondary); }
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: var(--bg-elevated);
  border-radius: 12px;
  margin-bottom: 12px;
  border: 1px solid rgba(255,255,255,0.06);
  transition: border-color .25s ease;
  overflow: hidden;
}
.faq-item[open] { border-color: rgba(0,226,154,0.35); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  position: relative;
  flex-shrink: 0;
  transition: all .25s ease;
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--text-secondary);
  border-radius: 2px;
  transition: background .25s ease;
}
.faq-icon::before { width: 12px; height: 2px; }
.faq-icon::after { width: 2px; height: 12px; }
.faq-item[open] .faq-icon {
  background: var(--brand-primary);
  transform: rotate(45deg);
}
.faq-item[open] .faq-icon::before,
.faq-item[open] .faq-icon::after { background: #0B1F1A; }
.faq-content {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--bg-primary);
  position: relative;
  padding: 72px 0;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, rgba(0,226,154,0.10) 0%, transparent 60%);
  pointer-events: none;
}
.cta-section .grid-container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 28px; font-weight: 800; margin-bottom: 12px; }
.cta-section p { font-size: 16px; color: var(--text-secondary); margin-bottom: 32px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 160px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 700;
  transition: all .25s ease;
  line-height: 1;
}
.btn i { font-size: 14px; }
.btn-primary {
  background: var(--action-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--action-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255,138,60,0.35);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  color: var(--brand-primary);
  border: 1.5px solid var(--brand-primary);
}
.btn-outline:hover {
  background: rgba(0,226,154,0.08);
  color: var(--brand-primary);
  transform: translateY(-2px);
}
.btn-outline:active { transform: translateY(0); }

/* ===== Footer ===== */
.site-footer {
  background: #071410;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 64px 0 24px;
}
.footer-grid { margin-bottom: 40px; }
.footer-brand .site-logo { margin-bottom: 14px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 260px;
  margin-bottom: 14px;
}
.footer-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--brand-primary);
  background: var(--badge-bg);
  padding: 4px 12px;
  border-radius: var(--radius-tag);
}
.footer-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
}
.footer-links a:hover { color: var(--brand-primary); padding-left: 4px; }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.footer-contact i { color: var(--brand-primary); width: 18px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
}
.footer-bottom .footer-domain {
  color: var(--text-secondary);
  margin-top: 4px;
  font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 36px; }
  .section { padding: 64px 0; }
  .carousel-arrow.prev { left: 4px; }
  .carousel-arrow.next { right: 4px; }
}
@media (max-width: 640px) {
  .site-header { height: 60px; }
  .site-logo { font-size: 17px; }
  .logo-icon { width: 32px; height: 32px; font-size: 15px; }
  .menu-toggle { display: flex; }
  .site-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease-out;
    padding: 24px;
    overflow-y: auto;
  }
  .site-nav.open {
    opacity: 1;
    visibility: visible;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }
  .nav-list { flex-direction: column; gap: 8px; }
  .nav-list a {
    display: block;
    padding: 16px 12px;
    font-size: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .nav-list a.active {
    border-left: 3px solid var(--brand-primary);
    padding-left: 14px;
    background: rgba(0,226,154,0.06);
  }
  .nav-list a.active::after { display: none; }
  .hero { padding: 120px 0 60px; min-height: auto; }
  .hero h1 { font-size: 28px; margin-bottom: 16px; }
  .hero-sub { font-size: 16px; margin-bottom: 28px; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; height: 44px; }
  .hero-preview { margin-top: 32px; }
  .section { padding: 56px 0; }
  .section-head h2 { font-size: 22px; }
  .section-head p { font-size: 14px; }
  .section-title-left { font-size: 22px; }
  .feature-row { margin-bottom: 56px; }
  .feature-row .cell { padding: 0 16px; }
  .feature-reverse .feature-text { order: 1; }
  .feature-reverse .feature-image { order: 2; }
  .feature-image { margin-top: 24px; }
  .feature-text p { font-size: 15px; }
  .carousel-slide img { aspect-ratio: 3 / 2; }
  .slide-caption { padding: 24px 16px; }
  .carousel-arrow { display: none; }
  .carousel-dots { gap: 6px; }
  .sys-version-card { padding: 28px 20px; }
  .sys-version-grid { gap: 16px; }
  .sys-version-num { font-size: 30px; }
  .news-item { flex-direction: row; padding: 14px; }
  .news-thumb { width: 88px; height: 88px; }
  .news-title { font-size: 15px; }
  .news-summary { font-size: 13px; }
  .news-cat { font-size: 11px; padding: 2px 10px; }
  .faq-item summary { padding: 16px 16px; font-size: 15px; }
  .faq-content { padding: 0 16px 16px; font-size: 13px; }
  .cta-section h2 { font-size: 22px; }
  .cta-actions { flex-direction: column; max-width: 320px; margin: 0 auto; }
  .site-footer { padding: 48px 0 20px; }
  .footer-grid .cell { margin-bottom: 24px; }
  .footer-bottom { text-align: center; font-size: 12px; }
}

/* roulang page: category1 */
:root {
  --bg-primary: #0B1F1A;
  --bg-secondary: #122A23;
  --bg-elevated: #17352C;
  --bg-deep: #071410;
  --accent: #00E29A;
  --accent-dim: rgba(0, 226, 154, 0.12);
  --accent-border: rgba(0, 226, 154, 0.35);
  --action: #FF8A3C;
  --action-hover: #FF9E5E;
  --star: #FFC857;
  --text-primary: #EFF3EF;
  --text-secondary: #A8BCB2;
  --border: rgba(255, 255, 255, 0.10);
  --radius: 14px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.40);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --font-num: Inter, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-cn); background: var(--bg-primary); color: var(--text-primary); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; transition: color .2s ease-out, background .2s ease-out, border-color .2s ease-out, box-shadow .2s ease-out; }
a:hover { color: var(--text-primary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; box-shadow: 0 0 0 4px rgba(0, 226, 154, 0.18); }
.grid-container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
@media (max-width: 640px) { .grid-container { padding-left: 16px; padding-right: 16px; } }

/* ===== Header / Nav ===== */
.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 100; height: 72px; display: flex; align-items: center; background: transparent; transition: background .3s ease, box-shadow .3s ease, border-color .3s ease; border-bottom: 1px solid transparent; }
.site-header.scrolled { background: rgba(11, 31, 26, 0.94); box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3); border-bottom: 1px solid var(--border); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.site-header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--text-primary); letter-spacing: 0.5px; }
.site-logo:hover { color: var(--text-primary); }
.logo-icon { width: 36px; height: 36px; border-radius: 8px; background: var(--accent); color: #0B1F1A; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; box-shadow: 0 0 18px rgba(0, 226, 154, 0.35); }
.site-nav .nav-list { display: flex; align-items: center; gap: 8px; }
.site-nav .nav-list a { display: inline-block; padding: 8px 16px; font-size: 15px; font-weight: 500; color: var(--text-secondary); border-radius: 6px; position: relative; transition: color .2s, background .2s; }
.site-nav .nav-list a:hover { color: var(--text-primary); background: rgba(255, 255, 255, 0.06); }
.site-nav .nav-list a.active { color: var(--accent); font-weight: 600; }
.site-nav .nav-list a.active::after { content: ""; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%); width: 24px; height: 2px; border-radius: 2px; background: var(--accent); }
.nav-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 22px; width: 44px; height: 44px; border-radius: 8px; cursor: pointer; align-items: center; justify-content: center; transition: background .2s; }
.nav-toggle:hover { background: rgba(255, 255, 255, 0.08); }
@media (max-width: 1024px) {
  .site-header { height: 60px; }
  .nav-toggle { display: flex; }
  .site-nav { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; height: 100dvh; background: var(--bg-primary); z-index: 99; padding: 80px 24px 32px; transform: translateY(-100%); opacity: 0; visibility: hidden; transition: transform .3s ease-out, opacity .3s ease-out, visibility .3s; overflow-y: auto; }
  .site-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .site-nav .nav-list { flex-direction: column; align-items: flex-start; gap: 4px; }
  .site-nav .nav-list a { display: block; width: 100%; padding: 14px 16px; font-size: 18px; border-radius: 10px; color: var(--text-secondary); }
  .site-nav .nav-list a:hover { background: rgba(255,255,255,0.06); color: var(--text-primary); }
  .site-nav .nav-list a.active { color: var(--accent); background: rgba(0,226,154,0.08); border-left: 3px solid var(--accent); }
  .site-nav .nav-list a.active::after { display: none; }
  body.nav-open { overflow: hidden; }
}

/* ===== Page Hero ===== */
.page-hero { position: relative; min-height: 88vh; display: flex; align-items: center; padding: 140px 0 88px; background-size: cover; background-position: center; background-repeat: no-repeat; }
.page-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(11,31,26,0.96) 10%, rgba(11,31,26,0.82) 45%, rgba(11,31,26,0.68) 100%); }
.page-hero::after { content: ""; position: absolute; right: -120px; bottom: -140px; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(0,226,154,0.12) 0%, transparent 65%); pointer-events: none; }
.page-hero .grid-container { position: relative; z-index: 2; }
.hero-content { max-width: 720px; margin: 0 auto; text-align: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: var(--accent-dim); border: 1px solid rgba(0,226,154,0.25); color: var(--accent); font-size: 13px; font-weight: 600; padding: 6px 18px; border-radius: var(--radius-tag); letter-spacing: 1px; margin-bottom: 24px; }
.hero-badge i { font-size: 14px; }
.page-hero h1 { font-size: 44px; font-weight: 800; line-height: 1.2; letter-spacing: 1px; color: var(--text-primary); margin-bottom: 20px; }
.page-hero h1 .highlight { color: var(--accent); }
.hero-desc { font-size: 18px; color: var(--text-secondary); line-height: 1.7; max-width: 620px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-trust { display: flex; gap: 12px; justify-content: center; margin-top: 32px; flex-wrap: wrap; }
.hero-trust .tag { display: inline-flex; align-items: center; gap: 6px; background: var(--accent-dim); color: var(--accent); font-size: 13px; padding: 5px 14px; border-radius: var(--radius-tag); }
.hero-trust .tag i { font-size: 12px; }
@media (max-width: 640px) {
  .page-hero { padding: 120px 0 64px; min-height: auto; }
  .page-hero h1 { font-size: 28px; }
  .hero-desc { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; max-width: 260px; }
}

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-width: 160px; height: 48px; padding: 0 28px; border-radius: var(--radius-btn); font-size: 15px; font-weight: 700; cursor: pointer; border: none; transition: background .2s ease-out, color .2s ease-out, transform .2s ease-out, box-shadow .2s ease-out, border-color .2s ease-out; }
.btn i { font-size: 15px; }
.btn-primary { background: var(--action); color: #fff; box-shadow: 0 4px 14px rgba(255, 138, 60, 0.28); }
.btn-primary:hover { background: var(--action-hover); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255, 158, 94, 0.35); }
.btn-primary:active { transform: translateY(1px); box-shadow: 0 2px 8px rgba(255, 138, 60, 0.25); }
.btn-secondary { background: transparent; color: var(--accent); border: 1.5px solid var(--accent); }
.btn-secondary:hover { background: rgba(0, 226, 154, 0.1); color: var(--accent); transform: translateY(-2px); border-color: var(--accent); }
.btn-secondary:active { transform: translateY(1px); }
.btn-secondary:focus-visible { box-shadow: 0 0 0 4px rgba(0, 226, 154, 0.18); }
@media (max-width: 640px) {
  .btn { height: 44px; min-width: 140px; width: 100%; max-width: 280px; }
}

/* ===== Section common ===== */
.section { padding: 88px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-head .sec-label { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 2px; color: var(--accent); background: var(--accent-dim); padding: 4px 16px; border-radius: var(--radius-tag); margin-bottom: 14px; }
.section-head h2 { font-size: 32px; font-weight: 800; line-height: 1.25; position: relative; display: inline-block; }
.section-head h2::before { content: ""; position: absolute; left: 50%; bottom: -10px; transform: translateX(-50%); width: 40px; height: 4px; border-radius: 4px; background: var(--accent); }
.section-head p { margin-top: 20px; font-size: 14px; color: var(--text-secondary); }
@media (max-width: 640px) { .section { padding: 56px 0; } .section-head { margin-bottom: 40px; } .section-head h2 { font-size: 22px; } }

/* ===== Quick Links ===== */
.quick-section { background: var(--bg-secondary); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 64px 0; }
.quick-card { background: var(--bg-elevated); border: 1px solid transparent; border-radius: var(--radius); padding: 32px 28px; height: 100%; transition: box-shadow .25s ease-out, transform .25s ease-out, border-color .25s ease-out; }
.quick-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: var(--accent-border); }
.quick-icon { width: 52px; height: 52px; border-radius: 12px; background: var(--accent-dim); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 20px; }
.quick-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.quick-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 16px; }
.quick-card .quick-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; }
@media (max-width: 640px) { .quick-section { padding: 48px 0; } .quick-card { margin-bottom: 20px; } }

/* ===== Access Info / Image + Text ===== */
.info-section { padding: 88px 0; }
.info-media { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-card); border: 1px solid var(--border); position: relative; }
.info-media img { width: 100%; object-fit: cover; aspect-ratio: 4/3; }
.info-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(11,31,26,0.7)); border-radius: var(--radius); pointer-events: none; }
.info-media .img-caption { position: absolute; left: 16px; bottom: 14px; z-index: 2; font-size: 13px; color: rgba(239,243,239,0.85); background: rgba(11,31,26,0.6); padding: 6px 14px; border-radius: var(--radius-tag); backdrop-filter: blur(4px); }
.info-body { padding: 8px 0 8px 40px; }
.info-body .sec-label { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 2px; color: var(--accent); background: var(--accent-dim); padding: 4px 16px; border-radius: var(--radius-tag); margin-bottom: 16px; }
.info-body h2 { font-size: 28px; font-weight: 800; line-height: 1.3; margin-bottom: 20px; }
.info-body p { font-size: 15px; color: var(--text-secondary); margin-bottom: 18px; line-height: 1.8; }
.info-points { margin-top: 24px; }
.info-points li { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; font-size: 15px; color: var(--text-primary); }
.info-points li i { color: var(--accent); font-size: 15px; margin-top: 4px; flex-shrink: 0; }
@media (max-width: 1024px) {
  .info-body { padding: 32px 0 0; }
  .info-body h2 { font-size: 24px; }
}
@media (max-width: 640px) { .info-section { padding: 56px 0; } .info-body h2 { font-size: 20px; } }

/* ===== Steps ===== */
.steps-section { background: var(--bg-secondary); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 88px 0; }
.step-card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; height: 100%; position: relative; transition: box-shadow .25s, border-color .25s, transform .25s; }
.step-card:hover { box-shadow: var(--shadow-hover); border-color: var(--accent-border); transform: translateY(-3px); }
.step-num { font-family: var(--font-num); font-size: 14px; font-weight: 700; color: var(--accent); background: var(--accent-dim); width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.step-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 12px; }
.step-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
@media (max-width: 640px) { .steps-section { padding: 56px 0; } .step-card { margin-bottom: 16px; } }

/* ===== Devices / Platforms ===== */
.device-list { display: flex; flex-direction: column; gap: 14px; }
.device-item { display: flex; align-items: center; gap: 16px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; transition: border-color .2s, box-shadow .2s, transform .2s; }
.device-item:hover { border-color: var(--accent-border); box-shadow: var(--shadow-card); transform: translateY(-2px); }
.device-icon { width: 44px; height: 44px; border-radius: 10px; background: var(--accent-dim); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.device-info { flex: 1; }
.device-info h3 { font-size: 16px; font-weight: 700; margin-bottom: 2px; }
.device-info span { font-size: 13px; color: var(--text-secondary); }
.version-card { background: var(--bg-elevated); border: 1px solid var(--border); border-top: 3px solid var(--accent); border-radius: var(--radius); padding: 36px 32px; height: 100%; }
.version-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.version-num { font-family: var(--font-num); font-size: 36px; font-weight: 800; color: var(--accent); line-height: 1.2; margin-bottom: 6px; }
.version-info { font-size: 13px; color: var(--text-secondary); margin-bottom: 24px; }
.version-grid .cell { padding: 12px 0; border-bottom: 1px solid var(--border); }
.version-grid .cell:last-child { border-bottom: none; }
.version-grid .v-label { display: block; font-size: 12px; letter-spacing: 1px; color: var(--text-secondary); text-transform: uppercase; margin-bottom: 4px; }
.version-grid .v-value { font-size: 16px; font-weight: 700; }
@media (max-width: 1024px) { .version-card { margin-top: 32px; } }
@media (max-width: 640px) { .version-num { font-size: 28px; } }

/* ===== Security Tips ===== */
.security-section { padding: 88px 0; }
.security-list { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px; }
.security-list li { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.security-list li:last-child { border-bottom: none; }
.security-list .sec-ico { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-dim); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; margin-top: 2px; }
.security-list .sec-content h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.security-list .sec-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
@media (max-width: 640px) { .security-section { padding: 56px 0; } .security-list { padding: 24px; } }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-secondary); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 88px 0; }
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 12px; overflow: hidden; transition: border-color .2s; }
.faq-item:hover { border-color: var(--accent-border); }
.faq-item details > summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; cursor: pointer; font-size: 16px; font-weight: 700; color: var(--text-primary); transition: color .2s; }
.faq-item details > summary::-webkit-details-marker { display: none; }
.faq-item details > summary:hover { color: var(--accent); }
.faq-item summary .faq-toggle { width: 28px; height: 28px; border-radius: 50%; background: var(--accent-dim); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; transition: transform .25s ease, background .25s ease, color .25s ease; }
.faq-item details[open] summary { color: var(--accent); }
.faq-item details[open] summary .faq-toggle { transform: rotate(45deg); background: var(--accent); color: #0B1F1A; }
.faq-answer { padding: 0 24px 20px; font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.faq-answer p { margin-bottom: 10px; }
.faq-answer p:last-child { margin-bottom: 0; }
@media (max-width: 640px) { .faq-section { padding: 56px 0; } .faq-item details > summary { padding: 16px 18px; font-size: 15px; } .faq-answer { padding: 0 18px 16px; } }

/* ===== CTA ===== */
.cta-section { position: relative; padding: 72px 0; background: var(--bg-primary); border-top: 1px solid var(--border); overflow: hidden; }
.cta-section::before { content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 500px; height: 500px; border-radius: 50%; background: radial-gradient(circle, rgba(0,226,154,0.10) 0%, transparent 65%); pointer-events: none; }
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 680px; margin: 0 auto; }
.cta-inner h2 { font-size: 28px; font-weight: 800; margin-bottom: 14px; }
.cta-inner p { font-size: 16px; color: var(--text-secondary); margin-bottom: 32px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
@media (max-width: 640px) { .cta-section { padding: 48px 0; } .cta-inner h2 { font-size: 22px; } .cta-actions { flex-direction: column; align-items: center; } }

/* ===== Footer ===== */
.site-footer { background: var(--bg-deep); border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 64px 0 0; }
.footer-grid { padding-bottom: 40px; }
.footer-brand .site-logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; max-width: 280px; }
.footer-tag { display: inline-block; background: var(--accent-dim); color: var(--accent); font-size: 12px; padding: 4px 14px; border-radius: var(--radius-tag); }
.footer-title { font-size: 16px; font-weight: 700; color: var(--text-primary); margin-bottom: 18px; position: relative; padding-bottom: 8px; }
.footer-title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 20px; height: 2px; background: var(--accent); border-radius: 2px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--text-secondary); font-size: 14px; transition: color .2s, padding-left .2s; }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact li { display: flex; align-items: center; gap: 10px; color: var(--text-secondary); font-size: 14px; margin-bottom: 12px; }
.footer-contact li i { color: var(--accent); width: 18px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: var(--text-secondary); margin-bottom: 4px; }
.footer-bottom .footer-domain { font-size: 12px; opacity: 0.7; }
@media (max-width: 640px) {
  .site-footer { padding-top: 48px; }
  .footer-brand { margin-bottom: 24px; }
  .footer-grid { row-gap: 32px; }
  .footer-bottom p { font-size: 12px; }
}

/* roulang page: article */
:root{
  --primary-bg:#0B1F1A;
  --secondary-bg:#122A23;
  --elevated-bg:#17352C;
  --brand:#00E29A;
  --brand-rgb:0,226,154;
  --accent:#FF8A3C;
  --accent-hover:#FF9E5E;
  --text-main:#EFF3EF;
  --text-muted:#A8BCB2;
  --border-light:rgba(255,255,255,0.10);
  --radius-lg:14px;
  --radius-md:8px;
  --shadow-card:0 4px 16px rgba(0,0,0,0.25);
  --shadow-hover:0 10px 30px rgba(0,0,0,0.40);
  --section-pad:88px;
  --transition:0.25s ease-out;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  background:var(--primary-bg);
  color:var(--text-main);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color var(--transition)}
ul,ol{list-style:none}
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;
  background:transparent;
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(11,31,26,.92);
  box-shadow:0 1px 0 var(--border-light);
  backdrop-filter:blur(8px);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;
}
.site-logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:20px;font-weight:800;color:var(--text-main);
  letter-spacing:.5px;
}
.logo-icon{
  width:36px;height:36px;flex:0 0 36px;
  background:var(--brand);
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  color:#0B1F1A;font-size:16px;
}
.site-nav .nav-list{display:flex;gap:6px;align-items:center}
.site-nav .nav-list a{
  display:inline-block;padding:10px 14px;
  color:var(--text-main);font-size:15px;font-weight:500;
  border-radius:8px;position:relative;
  transition:color var(--transition);
}
.site-nav .nav-list a:hover{color:var(--brand)}
.site-nav .nav-list a.active{color:var(--brand)}
.site-nav .nav-list a.active::after{
  content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%);
  width:24px;height:2px;background:var(--brand);border-radius:2px;
}
.nav-toggle{
  display:none;width:44px;height:44px;
  background:transparent;border:1px solid var(--border-light);
  border-radius:8px;color:var(--text-main);font-size:20px;cursor:pointer;
  align-items:center;justify-content:center;
  transition:border-color var(--transition),color var(--transition);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- breadcrumb ---------- */
.breadcrumb-bar{
  background:var(--secondary-bg);
  border-bottom:1px solid var(--border-light);
  padding:14px 0;margin-top:72px;
}
.breadcrumb-bar .cell{font-size:14px;color:var(--text-muted)}
.breadcrumb-bar a{color:var(--brand);transition:color var(--transition)}
.breadcrumb-bar a:hover{color:var(--accent)}
.breadcrumb-sep{margin:0 8px;color:rgba(168,188,178,.5)}
.breadcrumb-current{color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:340px;display:inline-block;vertical-align:bottom}
@media screen and (max-width:768px){
  .breadcrumb-current{max-width:180px}
}

/* ---------- article main ---------- */
.article-main{
  padding:56px 0 64px;
  background:
    linear-gradient(120deg,rgba(255,255,255,.02) 0%,rgba(255,255,255,.02) 1%,transparent 1%,transparent 3%,rgba(255,255,255,.02) 3%,rgba(255,255,255,.02) 4%,transparent 4%,transparent 6%),
    var(--primary-bg);
  background-size:120px 120px,cover;
}
.article-content-col{
  background:var(--secondary-bg);
  border:1px solid var(--border-light);
  border-radius:var(--radius-lg);
  padding:40px 44px;
  box-shadow:var(--shadow-card);
  margin-bottom:40px;
}
.post-header{margin-bottom:8px}
.article-title{
  font-size:34px;font-weight:800;line-height:1.25;
  color:var(--text-main);margin:0 0 22px;letter-spacing:.5px;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:18px;
  font-size:14px;color:var(--text-muted);
  padding-bottom:24px;border-bottom:1px solid var(--border-light);
  margin-bottom:28px;
}
.article-meta i{margin-right:6px;color:var(--brand)}
.article-body{font-size:16px;line-height:1.85;color:var(--text-main)}
.article-body p{margin:24px 0}
.article-body h2{
  font-size:24px;font-weight:800;
  margin:40px 0 16px;
  padding-left:14px;border-left:4px solid var(--brand);
}
.article-body h3{font-size:20px;font-weight:700;margin:32px 0 12px;color:var(--text-main)}
.article-body ul{margin:16px 0;padding-left:24px;list-style:disc}
.article-body ol{margin:16px 0;padding-left:24px;list-style:decimal}
.article-body li{margin:8px 0}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body img{border-radius:8px;margin:24px 0;max-width:100%}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  border-left:4px solid var(--brand);
  background:rgba(0,226,154,.08);
  border-radius:0 8px 8px 0;
  color:var(--text-muted);
}
.article-body pre{
  background:var(--elevated-bg);
  border:1px solid var(--border-light);
  border-left:4px solid var(--brand);
  border-radius:8px;padding:16px 20px;
  overflow-x:auto;font-size:14px;line-height:1.6;
  margin:24px 0;
}
.article-body code{
  font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;
  font-size:.9em;
}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0}
.article-body th,.article-body td{border:1px solid var(--border-light);padding:10px 14px;text-align:left}
.article-body th{background:var(--elevated-bg);font-weight:700}

/* ---------- not found ---------- */
.not-found{
  text-align:center;padding:60px 20px;
}
.not-found-icon{font-size:50px;color:var(--text-muted);margin-bottom:16px}
.not-found .article-title{font-size:28px;margin-bottom:12px}
.not-found p{color:var(--text-muted);margin-bottom:24px}

/* ---------- post footer nav ---------- */
.post-footer-nav{margin-top:40px}
.back-to-category{
  margin-bottom:16px;
  padding-bottom:16px;
  border-bottom:1px solid var(--border-light);
}
.back-to-category a{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand);font-size:15px;font-weight:500;
  transition:color var(--transition);
}
.back-to-category a:hover{color:var(--accent)}
.article-pagination{
  display:flex;justify-content:space-between;gap:16px;
  flex-wrap:wrap;
}
.page-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;border-radius:8px;
  background:var(--elevated-bg);
  color:var(--text-main);font-size:14px;
  border:1px solid var(--border-light);
  transition:all var(--transition);
  min-width:120px;justify-content:center;
}
.page-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.page-btn.disabled{opacity:.45;pointer-events:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-width:160px;height:48px;padding:0 28px;
  border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;
  border:none;transition:all var(--transition);
  text-decoration:none;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:var(--shadow-card);color:#fff}
.btn-primary:active{transform:translateY(1px)}
.btn-primary:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-outline{
  background:transparent;border:1.5px solid var(--brand);
  color:var(--brand);
}
.btn-outline:hover{background:rgba(0,226,154,.10);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-outline:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- sidebar ---------- */
.sidebar-desktop{position:sticky;top:92px}
.sidebar-widget{
  background:var(--secondary-bg);
  border:1px solid var(--border-light);
  border-radius:var(--radius-lg);
  padding:24px;margin-bottom:24px;
  box-shadow:var(--shadow-card);
}
.widget-title{
  font-size:18px;font-weight:700;color:var(--text-main);
  margin:0 0 18px;display:flex;align-items:center;gap:10px;
}
.widget-title::before{
  content:'';width:4px;height:22px;flex:0 0 4px;
  background:var(--brand);border-radius:2px;
}
.side-post-list li{
  display:flex;gap:12px;
  padding:12px 0;
  border-bottom:1px solid var(--border-light);
}
.side-post-list li:last-child{border-bottom:none;padding-bottom:0}
.side-post-thumb{
  width:68px;height:68px;flex:0 0 68px;
  object-fit:cover;border-radius:8px;
}
.side-post-info{display:flex;flex-direction:column;gap:6px;min-width:0;justify-content:center}
.side-post-title{
  font-size:14px;line-height:1.5;color:var(--text-main);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--transition);
}
.side-post-title:hover{color:var(--brand)}
.side-post-meta{font-size:12px;color:var(--text-muted)}
.cat-list li{margin-bottom:8px}
.cat-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 14px;border-radius:8px;
  color:var(--text-main);font-size:14px;font-weight:500;
  background:var(--elevated-bg);
  border:1px solid transparent;
  transition:all var(--transition);
}
.cat-list a:hover{color:var(--brand);border-color:rgba(0,226,154,.35);transform:translateX(4px)}
.cat-list a i{font-size:13px;color:var(--text-muted);transition:color var(--transition)}
.cat-list a:hover i{color:var(--brand)}
.sidebar-cta{
  background:var(--elevated-bg);
  border:1px solid rgba(0,226,154,.35);
  border-radius:var(--radius-lg);
  padding:28px 24px;text-align:center;
  box-shadow:var(--shadow-card);
}
.sidebar-cta h3{font-size:20px;font-weight:800;color:var(--text-main);margin:0 0 10px}
.sidebar-cta p{font-size:14px;color:var(--text-muted);line-height:1.6;margin:0 0 18px}

/* ---------- related ---------- */
.related-section{padding:0 0 64px}
.section-heading{margin-bottom:28px}
.related-title{
  font-size:28px;font-weight:800;color:var(--text-main);
  margin:0 0 6px;
  padding-left:14px;border-left:4px solid var(--brand);
}
.related-desc{color:var(--text-muted);font-size:14px;margin:0;padding-left:14px}
.related-card{
  background:var(--secondary-bg);
  border:1px solid var(--border-light);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:all .3s ease-out;
  box-shadow:var(--shadow-card);
  height:100%;
  display:flex;flex-direction:column;
}
.related-card:hover{
  box-shadow:var(--shadow-hover);
  border-color:rgba(0,226,154,.35);
  transform:translateY(-3px);
}
.related-card img{
  width:100%;height:160px;object-fit:cover;
}
.related-card-body{padding:20px 22px;flex:1;display:flex;flex-direction:column;gap:10px}
.related-card-body h3{
  font-size:17px;font-weight:700;line-height:1.5;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card-body h3 a{color:var(--text-main);transition:color var(--transition)}
.related-card-body h3 a:hover{color:var(--brand)}
.related-card-date{font-size:13px;color:var(--text-muted);margin-top:auto}
.related-card-date i{margin-right:4px;color:var(--brand)}

/* ---------- CTA banner ---------- */
.cta-banner{
  padding:64px 0;
  background:var(--primary-bg);
  border-top:1px solid var(--border-light);
  position:relative;overflow:hidden;
  text-align:center;
}
.cta-banner::before{
  content:'';position:absolute;
  width:420px;height:420px;border-radius:50%;
  background:rgba(0,226,154,.10);
  top:50%;left:50%;transform:translate(-50%,-50%);
  pointer-events:none;
}
.cta-banner .grid-container{position:relative;z-index:1}
.cta-banner h2{font-size:28px;font-weight:800;color:var(--text-main);margin-bottom:10px}
.cta-banner p{font-size:16px;color:var(--text-muted);margin-bottom:24px}
.cta-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  background:#071410;
  border-top:1px solid rgba(255,255,255,.08);
  padding:56px 0 24px;
}
.footer-grid{margin-bottom:32px}
.footer-brand p{color:var(--text-muted);font-size:14px;line-height:1.7;margin:16px 0 12px}
.footer-brand .footer-tag{
  display:inline-block;
  padding:4px 14px;
  background:rgba(0,226,154,.12);
  color:var(--brand);
  border-radius:999px;
  font-size:12px;
  font-weight:500;
}
.footer-title{
  font-size:16px;font-weight:700;color:var(--text-main);
  margin:0 0 16px;
}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--text-muted);font-size:14px;transition:color var(--transition)}
.footer-links a:hover{color:var(--brand)}
.footer-contact{color:var(--text-muted);font-size:14px}
.footer-contact li{margin-bottom:10px;display:flex;align-items:flex-start;gap:8px}
.footer-contact i{color:var(--brand);margin-top:4px;width:16px;flex:0 0 16px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:20px;text-align:center;
}
.footer-bottom p{margin:4px 0;color:var(--text-muted);font-size:14px}
.footer-domain{font-size:12px;color:rgba(168,188,178,.6)}

/* ---------- responsive ---------- */
@media screen and (max-width:1024px){
  :root{--section-pad:56px}
  .article-content-col{padding:32px}
  .related-card img{height:180px}
}
@media screen and (max-width:768px){
  .site-header{height:60px}
  .header-inner{height:60px}
  .nav-toggle{display:flex}
  .site-nav{
    position:fixed;top:60px;left:0;right:0;
    background:rgba(11,31,26,.98);
    border-bottom:1px solid var(--border-light);
    display:none;
    padding:16px;
    max-height:calc(100vh - 60px);
    overflow-y:auto;
  }
  .site-nav.open{display:block}
  .site-nav .nav-list{flex-direction:column;gap:4px}
  .site-nav .nav-list a{display:block;padding:14px 16px;font-size:16px}
  .site-nav .nav-list a.active::after{
    left:0;transform:none;top:50%;margin-top:-10px;
    width:4px;height:20px;
  }
  .breadcrumb-bar{margin-top:60px}
  .article-main{padding:40px 0}
  .article-content-col{padding:24px 20px}
  .article-title{font-size:26px}
  .article-meta{gap:10px;font-size:13px}
  .article-body h2{font-size:22px}
  .article-pagination{flex-direction:column;align-items:stretch}
  .page-btn{width:100%}
  .cta-banner{padding:40px 0}
  .cta-banner h2{font-size:22px}
  .footer-grid .cell{margin-bottom:24px}
}
@media screen and (max-width:520px){
  .grid-container{padding-left:16px;padding-right:16px}
  .grid-margin-x>.cell{padding-left:8px;padding-right:8px}
  .related-title{font-size:24px}
  .related-card img{height:200px}
  .sidebar-widget{padding:18px}
  .article-meta{gap:8px;flex-direction:column;gap:6px}
  .btn{width:100%;max-width:100%}
  .cta-buttons{flex-direction:column;align-items:center}
  .cta-buttons .btn{width:100%}
}

/* roulang page: category3 */
:root {
            --bg-primary: #0B1F1A;
            --bg-secondary: #122A23;
            --bg-elevated: #17352C;
            --bg-footer: #071410;
            --brand-primary: #00E29A;
            --brand-primary-rgb: 0, 226, 154;
            --action-color: #FF8A3C;
            --action-hover: #FF9E5E;
            --text-primary: #EFF3EF;
            --text-secondary: #A8BCB2;
            --border-light: rgba(255, 255, 255, 0.10);
            --border-brand: rgba(0, 226, 154, 0.35);
            --badge-bg: rgba(0, 226, 154, 0.12);
            --star-color: #FFC857;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.40);
            --container-width: 1200px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
            --font-num: "Inter", "Helvetica Neue", Arial, sans-serif;
            --transition-speed: 0.25s ease-out;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        a:hover,
        a:focus {
            color: var(--action-hover);
        }

        button {
            font-family: var(--font-main);
            cursor: pointer;
            border: none;
            background: none;
        }

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

        ::selection {
            background: rgba(var(--brand-primary-rgb), 0.30);
            color: #fff;
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 31, 26, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition-speed), box-shadow var(--transition-speed);
        }

        .site-header.scrolled {
            background: rgba(7, 20, 16, 0.95);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
        }

        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .site-logo:hover {
            color: var(--brand-primary);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--brand-primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B1F1A;
            font-size: 16px;
            box-shadow: 0 0 20px rgba(var(--brand-primary-rgb), 0.35);
        }

        .site-nav .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .site-nav .nav-list a {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 10px 2px;
            position: relative;
            display: inline-block;
            transition: color var(--transition-speed);
        }

        .site-nav .nav-list a::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--brand-primary);
            transform: translateX(-50%);
            transition: width var(--transition-speed), opacity var(--transition-speed);
            opacity: 0;
            border-radius: 2px;
        }

        .site-nav .nav-list a:hover {
            color: var(--text-primary);
        }

        .site-nav .nav-list a:hover::after {
            width: 24px;
            opacity: 1;
        }

        .site-nav .nav-list a.active {
            color: var(--brand-primary);
        }

        .site-nav .nav-list a.active::after {
            width: 24px;
            opacity: 1;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            font-size: 22px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.04);
        }

        /* ===== Cat Hero ===== */
        .cat-hero {
            position: relative;
            padding: 160px 0 88px;
            background:
                linear-gradient(120deg, rgba(255, 255, 255, 0.04) 0%, transparent 20%, transparent 35%, rgba(255, 255, 255, 0.03) 50%, transparent 65%),
                linear-gradient(90deg, rgba(11, 31, 26, 0.92) 0%, rgba(11, 31, 26, 0.72) 60%, rgba(11, 31, 26, 0.55) 100%),
                url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            border-bottom: 1px solid var(--border-light);
            overflow: hidden;
        }

        .cat-hero::after {
            content: "";
            position: absolute;
            right: -120px;
            top: 50%;
            width: 420px;
            height: 420px;
            background: rgba(var(--brand-primary-rgb), 0.10);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .cat-hero-content {
            max-width: 680px;
        }

        .cat-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--badge-bg);
            color: var(--brand-primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: var(--radius-badge);
            margin-bottom: 20px;
            border: 1px solid rgba(var(--brand-primary-rgb), 0.20);
        }

        .cat-hero h1 {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .cat-hero h1 .highlight {
            color: var(--brand-primary);
        }

        .cat-hero-desc {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 560px;
        }

        .hero-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 700;
            padding: 0 28px;
            height: 48px;
            border-radius: var(--radius-btn);
            transition: all var(--transition-speed);
            white-space: nowrap;
        }

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

        .btn-primary-action {
            background: var(--action-color);
            color: #ffffff;
        }

        .btn-primary-action:hover {
            background: var(--action-hover);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 138, 60, 0.30);
        }

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

        .btn-ghost-brand {
            background: transparent;
            color: var(--brand-primary);
            border: 1.5px solid var(--brand-primary);
        }

        .btn-ghost-brand:hover {
            background: rgba(var(--brand-primary-rgb), 0.10);
            color: var(--brand-primary);
            transform: translateY(-2px);
        }

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

        .hero-mini-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
        }

        .hero-mini-badges .mini-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--badge-bg);
            color: var(--brand-primary);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: var(--radius-badge);
        }

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

        /* ===== Stats Bar ===== */
        .cat-stats {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-light);
            padding: 32px 0;
        }

        .stats-grid {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .stat-item {
            flex: 1;
            text-align: center;
            padding: 8px 16px;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }

        .stat-item:first-child {
            border-left: none;
        }

        .stat-num {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 700;
            color: var(--brand-primary);
            line-height: 1.1;
            letter-spacing: -0.01em;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* ===== Section Base ===== */
        .section-block {
            padding: 88px 0;
        }

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

        .section-head {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-head .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background: var(--badge-bg);
            padding: 5px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 32px;
            line-height: 1.25;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            position: relative;
        }

        .section-head .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .section-title-left {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .section-title-left::before {
            content: "";
            display: block;
            width: 4px;
            height: 24px;
            background: var(--brand-primary);
            border-radius: 4px;
            flex-shrink: 0;
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: all var(--transition-speed);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--brand-primary), rgba(var(--brand-primary-rgb), 0.2));
            opacity: 0;
            transition: opacity var(--transition-speed);
        }

        .feature-card:hover {
            background: var(--bg-elevated);
            border-color: var(--border-brand);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

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

        .feature-card-img {
            border-radius: 10px;
            overflow: hidden;
            margin-bottom: 20px;
            aspect-ratio: 3 / 2;
            background: var(--bg-elevated);
        }

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

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

        .feature-card-icon {
            display: inline-flex;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--badge-bg);
            color: var(--brand-primary);
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .feature-card .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-primary);
            background: var(--badge-bg);
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            margin-top: 14px;
        }

        /* ===== Flow Steps ===== */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 16px;
        }

        .flow-step {
            background: var(--bg-secondary);
            border-radius: var(--radius-card);
            padding: 28px 22px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
            transition: all var(--transition-speed);
            text-align: center;
        }

        .flow-step:hover {
            border-color: var(--border-brand);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .flow-step .step-num {
            font-family: var(--font-num);
            font-size: 40px;
            font-weight: 800;
            color: rgba(var(--brand-primary-rgb), 0.30);
            line-height: 1;
            margin-bottom: 12px;
        }

        .flow-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .flow-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Scene Blocks ===== */
        .scene-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 64px;
        }

        .scene-block:last-child {
            margin-bottom: 0;
        }

        .scene-block.reverse .scene-media {
            order: 2;
        }

        .scene-block.reverse .scene-content {
            order: 1;
        }

        .scene-media {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: var(--bg-secondary);
        }

        .scene-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        .scene-content h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .scene-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 18px;
        }

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

        .scene-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-primary);
            line-height: 1.6;
        }

        .scene-list li i {
            color: var(--brand-primary);
            font-size: 16px;
            margin-top: 3px;
            flex-shrink: 0;
        }

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

        .highlight-item {
            background: var(--bg-secondary);
            border-radius: var(--radius-card);
            padding: 32px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            gap: 20px;
            transition: all var(--transition-speed);
        }

        .highlight-item:hover {
            border-color: var(--border-brand);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .highlight-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--badge-bg);
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

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

        .highlight-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-secondary);
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-speed);
        }

        .faq-item:hover {
            border-color: rgba(0, 226, 154, 0.25);
        }

        .faq-item[open] {
            border-color: rgba(0, 226, 154, 0.45);
        }

        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            cursor: pointer;
            user-select: none;
            transition: color var(--transition-speed);
        }

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

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

        .faq-item .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition-speed);
        }

        .faq-item[open] .faq-icon {
            background: var(--brand-primary);
            color: #0B1F1A;
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        /* ===== CTA ===== */
        .site-cta {
            position: relative;
            background: var(--bg-primary);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 72px 0;
            overflow: hidden;
            text-align: center;
        }

        .site-cta::before {
            content: "";
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            width: 360px;
            height: 360px;
            background: rgba(var(--brand-primary-rgb), 0.10);
            border-radius: 50%;
            pointer-events: none;
        }

        .site-cta .grid-container {
            position: relative;
            z-index: 2;
        }

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

        .site-cta p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 56px;
        }

        .footer-grid {
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand .site-logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .footer-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--brand-primary);
            background: var(--badge-bg);
            padding: 4px 12px;
            border-radius: var(--radius-badge);
        }

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

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

        .footer-links a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color var(--transition-speed);
        }

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

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .footer-contact i {
            color: var(--brand-primary);
            margin-top: 4px;
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            padding: 20px 0;
        }

        .footer-bottom p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .footer-domain {
            font-family: var(--font-num);
            font-size: 13px !important;
            color: rgba(255, 255, 255, 0.45) !important;
        }

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

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

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

            .cat-hero h1 {
                font-size: 38px;
            }
        }

        @media screen and (max-width: 768px) {
            .header-inner {
                min-height: 60px;
            }

            .site-header {
                background: rgba(11, 31, 26, 0.95);
            }

            .site-nav {
                position: fixed;
                inset: 60px 0 auto 0;
                background: var(--bg-primary);
                border-bottom: 1px solid var(--border-light);
                padding: 20px 24px 24px;
                transform: translateY(-120%);
                transition: transform 0.3s ease-out;
                visibility: hidden;
                opacity: 0;
                pointer-events: none;
            }

            .site-nav.open {
                transform: translateY(0);
                visibility: visible;
                opacity: 1;
                pointer-events: auto;
            }

            .site-nav .nav-list {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .site-nav .nav-list a {
                display: block;
                width: 100%;
                padding: 12px 14px;
                font-size: 16px;
                border-radius: 8px;
            }

            .site-nav .nav-list a::after {
                display: none;
            }

            .site-nav .nav-list a.active {
                background: var(--badge-bg);
                border-left: 3px solid var(--brand-primary);
                color: var(--brand-primary);
            }

            .nav-toggle {
                display: flex;
            }

            .cat-hero {
                padding: 120px 0 64px;
            }

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

            .cat-hero-desc {
                font-size: 16px;
            }

            .btn {
                width: 100%;
                height: 44px;
            }

            .hero-btn-group {
                flex-direction: column;
            }

            .stats-grid {
                flex-direction: column;
                gap: 16px;
            }

            .stat-item {
                border-left: none;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                padding: 12px 0;
                width: 100%;
            }

            .stat-item:first-child {
                border-top: none;
            }

            .stat-num {
                font-size: 28px;
            }

            .section-block {
                padding: 56px 0;
            }

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

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

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

            .scene-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .scene-block.reverse .scene-media {
                order: 1;
            }

            .scene-block.reverse .scene-content {
                order: 2;
            }

            .scene-media img {
                height: 220px;
            }

            .highlight-item {
                padding: 22px;
            }

            .site-cta {
                padding: 48px 0;
            }

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

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

        @media screen and (max-width: 520px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

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

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }

            .cat-hero h1 {
                font-size: 27px;
            }

            .hero-mini-badges {
                flex-direction: column;
                align-items: flex-start;
            }

            .scene-list li {
                font-size: 14px;
            }

            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-item .faq-answer {
                padding: 0 18px 18px;
                font-size: 14px;
            }

            .highlight-item {
                flex-direction: column;
                gap: 14px;
            }
        }

/* roulang page: category2 */
:root {
  --bg-primary: #0B1F1A;
  --bg-secondary: #122A23;
  --bg-elevated: #17352C;
  --accent: #00E29A;
  --accent-rgb: 0, 226, 154;
  --action: #FF8A3C;
  --action-hover: #FF9E5E;
  --text-primary: #EFF3EF;
  --text-secondary: #A8BCB2;
  --border: rgba(255,255,255,0.10);
  --radius: 14px;
  --radius-btn: 8px;
  --shadow-card: 0 4px 16px rgba(0,0,0,0.25);
  --shadow-hover: 0 10px 30px rgba(0,0,0,0.40);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --font-num: "Inter", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color .2s ease;
}

a:hover {
  color: #ffffff;
}

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  border: 0;
  cursor: pointer;
}

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

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

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  height: 72px;
  display: flex;
  align-items: center;
  background: rgba(11, 31, 26, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: background .25s ease, box-shadow .25s ease;
}

.site-header.scrolled {
  background: rgba(11, 31, 26, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.30);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

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

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.site-logo:hover {
  color: var(--text-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: var(--bg-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 18px;
  flex: 0 0 36px;
}

.site-nav .nav-list {
  display: flex;
  gap: 6px;
}

.nav-list a {
  display: inline-block;
  padding: 10px 16px;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 15px;
  border-radius: 8px;
  position: relative;
  transition: color .2s ease, background .2s ease;
}

.nav-list a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.06);
}

.nav-list a.active {
  color: var(--accent);
}

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

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  color: var(--text-primary);
  font-size: 24px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
}

@media (max-width: 1024px) {
  .site-header,
  .header-inner {
    height: 60px;
  }

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

  .site-nav {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    height: calc(100vh - 60px);
    background: var(--bg-primary);
    z-index: 99;
    padding: 32px 24px;
    transform: translateX(100%);
    transition: transform .3s ease;
    overflow-y: auto;
  }

  .site-nav.open {
    transform: translateX(0);
  }

  .site-nav .nav-list {
    flex-direction: column;
    gap: 8px;
  }

  .nav-list a {
    display: block;
    font-size: 20px;
    padding: 14px 16px;
    border-radius: 10px;
  }

  .nav-list a.active {
    color: var(--accent);
    border-left: 3px solid var(--accent);
    background: rgba(0, 226, 154, 0.08);
  }

  .nav-list a.active::after {
    display: none;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s ease-out;
  min-width: 160px;
  white-space: nowrap;
}

.btn-primary {
  background: var(--action);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--action-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 138, 60, 0.25);
}

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

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent);
}

.btn-outline:hover {
  background: rgba(0, 226, 154, 0.10);
  color: var(--accent);
  transform: translateY(-2px);
}

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

.btn-lg {
  height: 52px;
  padding: 0 34px;
  font-size: 16px;
}

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

@media (max-width: 640px) {
  .btn {
    width: 100%;
    height: 44px;
    min-width: 0;
  }

  .btn-lg {
    height: 44px;
  }
}

/* Category Hero */
.category-hero {
  padding: 160px 0 72px;
  position: relative;
  background-color: var(--bg-primary);
  background-image: linear-gradient(120deg, rgba(0, 226, 154, 0.05) 0%, rgba(11, 31, 26, 0) 45%), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
}

.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(11, 31, 26, 0.86);
}

.category-hero .grid-container {
  position: relative;
  z-index: 2;
  text-align: center;
}

.category-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 24px;
  line-height: 1.7;
}

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

.hero-tags .tag {
  background: rgba(0, 226, 154, 0.12);
  color: var(--accent);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
}

@media (max-width: 640px) {
  .category-hero {
    padding: 120px 0 56px;
  }

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

  .hero-lead {
    font-size: 16px;
  }
}

/* Sections */
.section-block {
  padding: 88px 0;
}

.section-block + .section-block {
  border-top: 1px solid var(--border);
}

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

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-head h2::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: -18px;
  width: 4px;
  height: 24px;
  background: var(--accent);
  border-radius: 2px;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 620px;
  margin: 0 auto;
}

@media (max-width: 640px) {
  .section-block {
    padding: 56px 0;
  }

  .section-head {
    margin-bottom: 36px;
  }

  .section-head h2 {
    font-size: 22px;
  }
}

/* Platform Cards */
.plat-card {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 28px 24px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: all .25s ease-out;
  display: flex;
  flex-direction: column;
}

.plat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0, 226, 154, 0.35);
}

.plat-icon {
  width: 56px;
  height: 56px;
  background: rgba(0, 226, 154, 0.12);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 18px;
}

.plat-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.plat-version {
  font-family: var(--font-num);
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.plat-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 22px;
  flex: 1;
}

.plat-card .btn {
  width: 100%;
}

/* Showcase */
.showcase-img {
  border-radius: 8px;
  box-shadow: var(--shadow-card);
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.showcase-content h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  position: relative;
  padding-left: 16px;
}

.showcase-content h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 4px;
  height: 24px;
  background: var(--accent);
  border-radius: 2px;
}

.showcase-content p {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.feature-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 12px;
  color: var(--text-primary);
  font-size: 15px;
}

.feature-list li i {
  color: var(--accent);
  margin-top: 4px;
}

@media (max-width: 640px) {
  .showcase-content h2 {
    font-size: 22px;
  }
}

/* Steps */
.step-card {
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: 26px 22px;
  height: 100%;
  position: relative;
  overflow: hidden;
  transition: all .25s ease-out;
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.step-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0, 226, 154, 0.35);
}

.step-num {
  font-family: var(--font-num);
  font-size: 36px;
  font-weight: 800;
  color: rgba(0, 226, 154, 0.35);
  line-height: 1;
  display: block;
  margin-bottom: 14px;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

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

/* Info List */
.info-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.info-item {
  display: flex;
  gap: 18px;
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 16px;
  transition: all .25s ease-out;
}

.info-item:hover {
  background: var(--bg-elevated);
  border-color: rgba(0, 226, 154, 0.35);
  transform: translateY(-2px);
}

.info-cover {
  flex: 0 0 100px;
}

.info-cover img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 8px;
}

.info-body {
  flex: 1;
  min-width: 0;
}

.info-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
  gap: 12px;
}

.tag {
  display: inline-block;
  background: rgba(0, 226, 154, 0.12);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.info-date {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.info-body h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.4;
}

.info-body h3 a {
  color: var(--text-primary);
}

.info-body h3 a:hover {
  color: var(--accent);
}

.info-summary {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more {
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
}

.read-more i {
  transition: transform .2s ease;
  display: inline-block;
}

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

@media (max-width: 640px) {
  .info-item {
    gap: 14px;
    padding: 12px;
  }

  .info-cover {
    flex-basis: 88px;
  }

  .info-cover img {
    width: 88px;
    height: 88px;
  }

  .info-summary {
    display: none;
  }

  .info-body h3 {
    font-size: 15px;
  }
}

/* FAQ */
.faq-wrap {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-secondary);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
  transition: border-color .2s ease;
}

.faq-item[open] {
  border-color: rgba(0, 226, 154, 0.35);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  list-style: none;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  transition: color .2s ease;
}

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

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

.faq-icon {
  position: relative;
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  border-radius: 50%;
  background: rgba(0, 226, 154, 0.12);
  transition: background .2s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 2px;
  background: var(--accent);
  transform: translate(-50%, -50%);
  transition: transform .25s ease, background .25s ease;
}

.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item[open] .faq-icon {
  background: var(--accent);
}

.faq-item[open] .faq-icon::before,
.faq-item[open] .faq-icon::after {
  background: var(--bg-primary);
}

.faq-item[open] .faq-icon::after {
  transform: translate(-50%, -50%) rotate(180deg);
}

.faq-item p {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* CTA Banner */
.cta-banner {
  padding: 64px 0;
  background: var(--bg-primary);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: rgba(0, 226, 154, 0.08);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.cta-banner .grid-container {
  position: relative;
  z-index: 2;
}

.cta-banner h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 10px;
}

.cta-banner p {
  color: var(--text-secondary);
  margin-bottom: 28px;
}

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

@media (max-width: 640px) {
  .cta-banner {
    padding: 40px 0;
  }

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

/* Footer */
.site-footer {
  background: #071410;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 48px 0 24px;
}

.footer-grid {
  padding-bottom: 32px;
}

.footer-brand .site-logo {
  margin-bottom: 10px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 14px 0 10px;
  max-width: 280px;
  line-height: 1.6;
}

.footer-tag {
  display: inline-block;
  background: rgba(0, 226, 154, 0.12);
  color: var(--accent);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 14px;
  color: #ffffff;
}

.footer-links a,
.footer-contact {
  color: var(--text-secondary);
  font-size: 14px;
}

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

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

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

.footer-contact li i {
  color: var(--accent);
  width: 20px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 12px;
  color: #6a7f76;
}

.footer-domain {
  font-family: var(--font-num);
}

@media (max-width: 640px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-grid .cell {
    margin-bottom: 24px;
  }
}