/* roulang page: index */
:root {
  --primary-bg: #0A0E17;
  --hero-blue: #0B1B2B;
  --deep-blue: #13293D;
  --card-bg: #131A26;
  --panel-bg: #0F1620;
  --accent: #00E5A0;
  --accent-soft: rgba(0, 229, 160, 0.08);
  --accent-glow: rgba(0, 229, 160, 0.3);
  --warm: #FFB347;
  --text: #E8EDF4;
  --text-secondary: #8A94A6;
  --text-muted: #4A5468;
  --border: #1F2A38;
  --border-light: rgba(255, 255, 255, 0.06);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.35), 0 0 24px rgba(0, 229, 160, 0.08);
  --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --section-gap: 88px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { overflow-x: hidden; }
body {
  margin: 0;
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background-color: var(--primary-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: var(--accent); text-decoration: none; transition: color .3s ease; }
a:hover { color: #4dffc0; text-decoration: none; }
img { max-width: 100%; height: auto; }
h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.4; margin-bottom: .8em; color: var(--text); }
h2 { font-size: 1.8rem; margin-bottom: .9em; }
h3 { font-size: 1.2rem; }
p { margin-bottom: 1.2em; }
ul, ol { padding-left: 1.5em; }
input, button, textarea { font-family: inherit; }

/* container refinement */
.container { max-width: 1200px; }

/* ===== Header / Navbar ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1040;
  background: rgba(8, 12, 20, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  border-bottom-color: rgba(0, 229, 160, 0.35);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}
.navbar {
  padding: 0;
  min-height: 68px;
}
.navbar-brand {
  display: inline-flex;
  align-items: center;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.01em;
  padding: 0;
}
.navbar-brand:hover { color: var(--accent); }
.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent), 0 0 20px rgba(0, 229, 160, 0.3);
  margin-right: 10px;
  display: inline-block;
  flex-shrink: 0;
}
.navbar-nav .nav-link {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 400;
  padding: 20px 18px;
  position: relative;
  letter-spacing: 0.02em;
  transition: color .3s ease;
}
.navbar-nav .nav-link:hover { color: var(--text); }
.navbar-nav .nav-link.active {
  color: var(--accent);
  font-weight: 500;
  text-shadow: 0 0 12px rgba(0, 229, 160, 0.3);
}
.navbar-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 18px;
  right: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}
.nav-cta {
  margin-left: 24px;
  padding: 9px 22px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #04121A;
  border: none;
  transition: all .3s ease;
}
.nav-cta:hover {
  background: #3dffbe;
  color: #04121A;
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.35);
  transform: translateY(-1px);
}
.nav-cta:active { transform: translateY(1px); }
.navbar-toggler {
  border: 1px solid var(--border);
  background: var(--panel-bg);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}
.navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15); }
.toggler-bar {
  display: block;
  width: 22px;
  height: 2px;
  margin: 4px 0;
  border-radius: 2px;
  background: var(--text);
  transition: all .3s ease;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 128px 0 110px;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10, 14, 23, 0.96) 0%, rgba(10, 14, 23, 0.88) 45%, rgba(10, 14, 23, 0.6) 100%);
}
.hero::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 120px;
  background: linear-gradient(180deg, transparent 0%, var(--primary-bg) 100%);
}
.hero .container { position: relative; z-index: 2; }
.hero h1 {
  font-size: 2.9rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.01em;
  margin-bottom: 22px;
  color: #fff;
}
.hero-sub {
  font-size: 1.12rem;
  line-height: 1.8;
  color: #B9C4D4;
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 30px; }
.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
  padding: 12px 28px;
  font-size: 0.98rem;
  transition: all .3s ease;
}
.btn-primary {
  background: var(--accent);
  border: 1px solid var(--accent);
  color: #04121A;
}
.btn-primary:hover {
  background: #3dffbe;
  border-color: #3dffbe;
  color: #04121A;
  box-shadow: 0 0 24px rgba(0, 229, 160, 0.35);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(1px); box-shadow: none; }
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 229, 160, 0.05);
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta i { color: var(--accent); font-size: 0.85rem; }
.hero-card {
  background: rgba(19, 26, 38, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  margin-left: auto;
  max-width: 420px;
  transition: transform .4s ease, border-color .4s ease;
}
.hero-card:hover { transform: translateY(-4px); border-color: rgba(0, 229, 160, 0.3); }
.hero-card img { width: 100%; display: block; height: 220px; object-fit: cover; }
.hero-card-info {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.hero-card-info .badge {
  align-self: flex-start;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.03em;
}
.badge-accent {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(0, 229, 160, 0.25);
}
.badge-warm {
  background: rgba(255, 179, 71, 0.12);
  color: var(--warm);
  border: 1px solid rgba(255, 179, 71, 0.25);
}

/* ===== Trust strip ===== */
.trust-strip {
  background: var(--panel-bg);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  padding: 8px 0;
}
.trust-item i {
  font-size: 1.6rem;
  color: var(--accent);
  width: 40px;
  text-align: center;
  flex-shrink: 0;
}
.trust-item span {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ===== Section common ===== */
.section-pad { padding: var(--section-gap) 0; }
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}
.section-header h2 { margin-bottom: 12px; }
.section-header p { color: var(--text-secondary); font-size: 1rem; }

/* ===== About ===== */
.about-section {
  background: var(--primary-bg);
  position: relative;
}
.about-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.about-img-wrap img { width: 100%; display: block; object-fit: cover; min-height: 320px; }
.about-img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0, 229, 160, 0.05) 100%);
  pointer-events: none;
}
.about-content h2 { font-size: 1.8rem; margin-bottom: 18px; }
.about-content p { color: #A9B4C4; font-size: 0.98rem; }
.about-list { list-style: none; padding: 0; margin: 24px 0 0; }
.about-list li {
  padding: 8px 0;
  padding-left: 32px;
  position: relative;
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.about-list li i {
  position: absolute;
  left: 0;
  top: 12px;
  color: var(--accent);
  font-size: 1rem;
}

/* ===== Feature cards ===== */
.features-section { background: var(--panel-bg); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: all .35s ease;
}
.feature-card:hover {
  border-color: rgba(0, 229, 160, 0.35);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.feature-card .feature-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 20px;
  position: relative;
}
.feature-card .feature-img img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}
.feature-card:hover .feature-img img { transform: scale(1.03); }
.feature-card .feature-tag { margin-bottom: 12px; }
.feature-card h3 { font-size: 1.18rem; margin-bottom: 10px; }
.feature-card p { color: var(--text-secondary); font-size: 0.92rem; flex: 1; }
.feature-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
  margin-top: 12px;
  border-bottom: 1px solid transparent;
  transition: all .3s ease;
  align-self: flex-start;
}
.feature-more:hover {
  border-bottom-color: var(--accent);
  color: #4dffc0;
}
.feature-more i { font-size: 0.8rem; transition: transform .3s; }
.feature-card:hover .feature-more i { transform: translateX(4px); }

/* ===== Latest news / CMS ===== */
.latest-section { background: var(--primary-bg); }
.news-item {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: all .35s ease;
}
.news-item:hover {
  border-color: rgba(0, 229, 160, 0.35);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.news-thumb { overflow: hidden; }
.news-thumb img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  display: block;
  transition: transform .45s ease;
}
.news-item:hover .news-thumb img { transform: scale(1.04); }
.news-body { padding: 20px 24px; display: flex; flex-direction: column; flex: 1; }
.news-cat { margin-bottom: 10px; align-self: flex-start; }
.news-title { font-size: 1.05rem; margin-bottom: 8px; line-height: 1.5; }
.news-title a { color: var(--text); transition: color .3s; }
.news-title a:hover { color: var(--accent); }
.news-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.news-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.news-date { color: var(--text-muted); font-size: 0.82rem; display: inline-flex; align-items: center; gap: 6px; }
.news-more {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-more:hover { color: #4dffc0; }
.news-more i { font-size: 0.75rem; }
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 1rem;
}
.empty-state i { font-size: 2.5rem; color: var(--text-muted); display: block; margin-bottom: 14px; }

/* ===== Stats / Trust ===== */
.stats-section {
  background: linear-gradient(135deg, var(--hero-blue) 0%, var(--primary-bg) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 56px 0;
}
.stat-item {
  text-align: center;
  padding: 24px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all .3s ease;
  height: 100%;
}
.stat-item:hover {
  border-color: rgba(0, 229, 160, 0.25);
  background: rgba(0, 229, 160, 0.04);
}
.stat-key {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
}
.stat-label { font-size: 0.9rem; color: var(--text-secondary); }

/* ===== FAQ ===== */
.faq-section { background: var(--panel-bg); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.accordion { --bs-accordion-bg: transparent; --bs-accordion-border-width: 0; --bs-accordion-btn-focus-box-shadow: none; --bs-accordion-active-bg: transparent; }
.accordion-item {
  background: var(--card-bg);
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .3s;
}
.accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: rgba(0, 229, 160, 0.3) !important;
  box-shadow: 0 0 16px rgba(0, 229, 160, 0.05);
}
.accordion-button {
  background: transparent;
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  padding: 20px 24px;
  border: none;
  box-shadow: none;
}
.accordion-button:not(.collapsed) {
  background: rgba(0, 229, 160, 0.04);
  color: var(--accent);
}
.accordion-button::after {
  content: '\f067';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  background-image: none;
  width: auto;
  height: auto;
  color: var(--text-secondary);
  transition: transform .3s ease, color .3s ease;
}
.accordion-button:not(.collapsed)::after {
  content: '\f068';
  background-image: none;
  color: var(--accent);
  transform: rotate(0deg);
}
.accordion-button:focus {
  box-shadow: none;
  border-color: transparent;
}
.accordion-body {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.85;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 90px 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 23, 0.92);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 2rem; margin-bottom: 14px; }
.cta-section p { color: var(--text-secondary); max-width: 560px; margin: 0 auto 30px; }
.cta-form {
  display: flex;
  gap: 10px;
  max-width: 520px;
  margin: 0 auto;
  flex-wrap: wrap;
}
.cta-form .form-control {
  flex: 1;
  background: rgba(15, 22, 32, 0.9);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 12px 18px;
  font-size: 0.95rem;
  min-width: 220px;
  transition: border-color .3s, box-shadow .3s;
}
.cta-form .form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
  outline: none;
  background: rgba(15, 22, 32, 1);
}
.cta-form .form-control::placeholder { color: var(--text-muted); }
.cta-form .btn { flex-shrink: 0; }

/* ===== Footer ===== */
.site-footer {
  background: #070B12;
  border-top: 1px solid var(--border);
  padding-top: 56px;
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
}
.footer-brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  margin-bottom: 14px;
}
.footer-desc { color: var(--text-secondary); font-size: 0.9rem; max-width: 340px; }
.footer-title { font-size: 0.95rem; font-weight: 600; color: var(--text); margin-bottom: 16px; letter-spacing: 0.04em; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--text-secondary); font-size: 0.9rem; transition: color .3s, padding-left .3s; }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-info { color: var(--text-secondary); font-size: 0.88rem; line-height: 2; }
.footer-info i { color: var(--accent); width: 20px; margin-right: 6px; font-size: 0.85rem; }
.copyright {
  margin-top: 40px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.copyright a { color: var(--text-secondary); }
.copyright a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .section-pad { --section-gap: 60px; }
  .hero h1 { font-size: 2.2rem; }
  .hero-card { margin: 40px auto 0; }
  .navbar-collapse {
    background: rgba(8, 12, 20, 0.96);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
  }
  .navbar-nav .nav-link {
    padding: 12px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }
  .navbar-nav .nav-link.active::after { display: none; }
  .navbar-nav .nav-link.active {
    background: rgba(0, 229, 160, 0.06);
    border-left: 3px solid var(--accent);
    border-bottom: none;
  }
  .nav-cta { margin: 16px 20px 8px; display: inline-block; }
  .cta-form { flex-direction: column; }
  .cta-form .btn { width: 100%; }
}

@media (max-width: 767.98px) {
  .section-pad { --section-gap: 48px; }
  .hero { padding: 70px 0 80px; }
  .hero h1 { font-size: 1.7rem; }
  .hero-sub { font-size: 1rem; }
  .hero-actions { gap: 12px; }
  .btn { width: auto; padding: 10px 20px; }
  .trust-item { justify-content: flex-start; }
  .about-list li { padding-left: 28px; }
  .stat-item { padding: 18px 12px; }
  .faq-section h2, .features-section h2, .latest-section h2 { font-size: 1.5rem; }
}

@media (max-width: 575.98px) {
  body { font-size: 15px; }
  .hero h1 { font-size: 1.5rem; }
  .hero-meta { gap: 12px; font-size: 0.82rem; }
  .btn { width: 100%; text-align: center; }
  .news-thumb img { height: 140px; }
}

/* roulang page: article */
:root {
  --bg-primary: #0a0e17;
  --bg-card: #131a26;
  --bg-panel: #0f1620;
  --bg-deep: #070b12;
  --text-primary: #e8edf4;
  --text-secondary: #8a94a6;
  --text-muted: #4a5468;
  --border-color: #1f2a38;
  --accent: #00e5a0;
  --accent-glow: rgba(0, 229, 160, 0.25);
  --accent-secondary: #ffb347;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.35), 0 0 24px rgba(0, 229, 160, 0.08), 0 0 0 1px rgba(0, 229, 160, 0.15) inset;
  --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", -apple-system, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  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%; height: auto; }
a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: #b8fff0; }
.btn { border-radius: var(--radius-sm); }
.btn:focus { box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15); }
.container { max-width: 1200px; }
/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1030;
  background: rgba(8, 12, 20, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: all .3s;
}
.site-header.scrolled {
  border-bottom-color: rgba(0, 229, 160, 0.35);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}
.site-header .container { padding-top: 0; padding-bottom: 0; }
.navbar { padding: 16px 0; }
.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-primary);
  letter-spacing: .02em;
}
.navbar-brand:hover { color: var(--accent); }
.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  display: inline-block;
  flex-shrink: 0;
}
.navbar-nav .nav-link {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 16px !important;
  position: relative;
  transition: color .2s;
}
.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 16px; right: 16px; bottom: 2px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s;
  border-radius: 2px;
}
.navbar-nav .nav-link:hover { color: #fff; }
.navbar-nav .nav-link:hover::after { transform: scaleX(1); }
.navbar-nav .nav-link.active {
  color: var(--accent);
  text-shadow: 0 0 12px rgba(0, 229, 160, 0.3);
}
.navbar-nav .nav-link.active::after { transform: scaleX(1); }
.btn.nav-cta {
  background: var(--accent);
  color: #04121a;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 10px;
  border: none;
  transition: all .25s;
  margin-left: 16px;
  white-space: nowrap;
}
.btn.nav-cta:hover {
  background: #2de1c2;
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.4);
  transform: translateY(-1px);
  color: #04121a;
}
.btn.nav-cta:active { transform: translateY(0); }
.navbar-toggler { border: none; padding: 8px; outline: none !important; box-shadow: none !important; }
.toggler-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: transform .3s, opacity .3s;
  border-radius: 2px;
}
.navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(2) { opacity: 0; }
.navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  padding: 170px 0 70px;
  background:
    linear-gradient(135deg, rgba(10, 14, 23, 0.94) 0%, rgba(10, 14, 23, 0.78) 50%, rgba(10, 14, 23, 0.58) 100%),
    url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}
.article-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 80px;
  background: linear-gradient(180deg, transparent, var(--bg-primary));
  pointer-events: none;
}
.breadcrumb {
  background: transparent;
  padding: 0;
  margin-bottom: 30px;
}
.breadcrumb-item { font-size: 0.85rem; }
.breadcrumb-item + .breadcrumb-item::before {
  content: '›';
  color: var(--text-muted);
  padding: 0 6px;
}
.breadcrumb-item a { color: var(--text-secondary); }
.breadcrumb-item a:hover { color: var(--accent); }
.breadcrumb-item.active { color: var(--text-muted); }
.article-title {
  font-size: 2.3rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 18px;
  color: var(--text-primary);
  letter-spacing: .01em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(19, 26, 38, 0.8);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 0.85rem;
  backdrop-filter: blur(4px);
}
.meta-badge .fas { color: var(--accent); font-size: 0.8rem; }
.meta-badge.cat-badge {
  border-color: rgba(255, 179, 71, 0.3);
  color: var(--accent-secondary);
}
.meta-badge.cat-badge .fas { color: var(--accent-secondary); }
/* ===== Article Body ===== */
.article-body-section {
  padding: 80px 0 60px;
  background: radial-gradient(ellipse at 20% 0%, rgba(0, 229, 160, 0.03) 0%, transparent 60%);
}
.container-narrow {
  max-width: 860px;
  margin: 0 auto;
}
.post-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 52px 56px;
  box-shadow: var(--shadow-card);
}
.post-content h1 {
  font-size: 1.9rem;
  font-weight: 700;
  margin: 0 0 0.8em;
  line-height: 1.4;
  color: var(--text-primary);
}
.post-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 1.6em 0 0.8em;
  color: var(--text-primary);
  padding-bottom: 0.4em;
  border-bottom: 1px solid var(--border-color);
  line-height: 1.4;
}
.post-content h3 {
  font-size: 1.18rem;
  font-weight: 600;
  margin: 1.4em 0 0.6em;
  color: var(--accent);
  line-height: 1.5;
}
.post-content p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-primary);
  margin-bottom: 1.3em;
}
.post-content ul,
.post-content ol {
  margin-bottom: 1.3em;
  padding-left: 1.6em;
}
.post-content li {
  margin-bottom: 0.55em;
  line-height: 1.8;
  color: var(--text-primary);
}
.post-content blockquote {
  border-left: 3px solid var(--accent);
  background: rgba(0, 229, 160, 0.05);
  padding: 18px 24px;
  margin: 1.6em 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}
.post-content blockquote p { margin-bottom: 0; color: var(--text-secondary); }
.post-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.post-content a:hover { color: #b8fff0; }
.post-content code {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 6px;
  font-family: 'Roboto Mono', Consolas, 'Courier New', monospace;
  font-size: 0.88em;
  color: var(--accent-secondary);
}
.post-content pre {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  overflow-x: auto;
  margin-bottom: 1.5em;
}
.post-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-primary);
  font-size: 0.9em;
  line-height: 1.7;
}
.post-content img {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin: 1.6em 0;
}
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 0.95rem;
}
.post-content th {
  background: var(--bg-panel);
  color: var(--accent);
  font-weight: 600;
}
.post-content th,
.post-content td {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  text-align: left;
}
.post-content hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 2em 0;
}
/* ===== Tags ===== */
.post-tags {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: center;
}
.tag-pill {
  display: inline-block;
  background: rgba(0, 229, 160, 0.07);
  border: 1px solid rgba(0, 229, 160, 0.22);
  color: var(--accent);
  border-radius: 50px;
  padding: 5px 16px;
  font-size: 0.8rem;
  transition: all .2s;
}
.tag-pill:hover {
  background: rgba(0, 229, 160, 0.15);
  color: var(--accent);
}
/* ===== Post Footer Actions ===== */
.post-footer-actions {
  margin-top: 40px;
  padding-top: 26px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}
.btn-outline-accent {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--text-secondary);
  border-radius: 10px;
  padding: 10px 26px;
  font-weight: 500;
  transition: all .25s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline-accent:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 229, 160, 0.04);
}
.btn-outline-accent:active { transform: translateY(1px); }
/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 90px 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}
.empty-state .empty-icon {
  font-size: 3.2rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  display: block;
}
.empty-state h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.empty-state p {
  color: var(--text-secondary);
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
/* ===== Related Section ===== */
.related-section {
  padding: 70px 0 80px;
  background: var(--bg-deep);
  border-top: 1px solid rgba(0, 229, 160, 0.08);
}
.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}
.section-subtitle {
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-size: 0.95rem;
}
.related-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 100%;
  transition: all .3s;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 160, 0.35);
  box-shadow: var(--shadow-hover);
}
.related-card .card-img-wrap {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg-panel);
}
.related-card .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s;
}
.related-card:hover .card-img-wrap img { transform: scale(1.04); }
.related-card .card-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.related-card .card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.45;
}
.related-card .card-title a { color: var(--text-primary); }
.related-card .card-title a:hover { color: var(--accent); }
.related-card .card-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.related-card .card-link {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.related-card .card-link .fa-arrow-right {
  transition: transform .25s;
  display: inline-block;
}
.related-card .card-link:hover .fa-arrow-right { transform: translateX(4px); }
/* ===== CTA Section ===== */
.cta-section {
  padding: 70px 0 100px;
}
.cta-box {
  background:
    linear-gradient(135deg, rgba(0, 229, 160, 0.08) 0%, rgba(19, 42, 61, 0.4) 100%),
    var(--bg-card);
  border: 1px solid rgba(0, 229, 160, 0.25);
  border-radius: var(--radius-lg);
  padding: 62px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.cta-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.cta-box h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
}
.cta-box p {
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 30px;
  line-height: 1.7;
}
.btn-primary-custom {
  background: var(--accent);
  color: #04121a;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 10px;
  border: none;
  transition: all .25s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary-custom:hover {
  background: #2de1c2;
  box-shadow: 0 0 24px rgba(0, 229, 160, 0.35);
  transform: translateY(-1px);
  color: #04121a;
}
.btn-primary-custom:active { transform: translateY(0); }
/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(0, 229, 160, 0.25);
  padding: 64px 0 0;
}
.site-footer .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}
.footer-brand .brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  display: inline-block;
}
.footer-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
  margin-bottom: 0;
  max-width: 360px;
}
.footer-title {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-title::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 32px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: all .2s;
  display: inline-block;
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}
.footer-info {
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.footer-info p { margin-bottom: 8px; }
.footer-info .fas {
  color: var(--accent);
  margin-right: 8px;
  width: 16px;
  text-align: center;
}
.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 48px;
  padding: 20px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.copyright a { color: var(--text-muted); }
.copyright a:hover { color: var(--accent); }
/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: rgba(10, 14, 23, 0.98);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-top: 14px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  }
  .navbar-nav .nav-link { padding: 10px 16px !important; }
  .navbar-nav .nav-link::after { left: 16px; right: auto; width: 0; }
  .navbar-nav .nav-link.active::after { width: 28px; }
  .btn.nav-cta {
    margin-left: 0;
    margin-top: 14px;
    width: 100%;
    justify-content: center;
  }
  .article-hero { padding: 150px 0 56px; }
  .post-content { padding: 36px 32px; }
  .related-section { padding: 56px 0 64px; }
  .cta-section { padding: 56px 0 80px; }
}
@media (max-width: 767.98px) {
  .article-hero { padding: 130px 0 42px; }
  .article-title { font-size: 1.65rem; }
  .article-body-section { padding: 56px 0 40px; }
  .post-content { padding: 24px 20px; }
  .post-content h2 { font-size: 1.3rem; }
  .post-content p { font-size: 0.95rem; }
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 1.3rem; }
  .related-card .card-body { padding: 18px; }
  .footer-title { margin-top: 20px; }
  .post-footer-actions { flex-direction: column; align-items: stretch; }
  .post-footer-actions .btn { width: 100%; justify-content: center; }
}
@media (max-width: 520px) {
  .article-title { font-size: 1.35rem; }
  .article-meta { gap: 8px; }
  .meta-badge { font-size: 0.78rem; padding: 5px 10px; }
  .breadcrumb { font-size: 0.78rem; }
  .section-title { font-size: 1.4rem; }
  .cta-box p { font-size: 0.9rem; }
  .navbar-brand { font-size: 1.05rem; }
}

/* roulang page: category1 */
:root {
      --bg-root: #0A0E17;
      --bg-deep: #070B12;
      --bg-card: #131A26;
      --bg-panel: #0F1620;
      --border: #1F2A38;
      --border-soft: rgba(255, 255, 255, .06);
      --text-main: #E8EDF4;
      --text-sub: #8A94A6;
      --text-muted: #4A5468;
      --primary: #00E5A0;
      --primary-soft: rgba(0, 229, 160, .12);
      --primary-glow: rgba(0, 229, 160, .35);
      --accent: #FFB347;
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --shadow-card: 0 4px 24px rgba(0, 0, 0, .25), inset 0 0 0 1px rgba(255, 255, 255, .04);
      --shadow-hover: 0 12px 32px rgba(0, 0, 0, .4), 0 0 24px rgba(0, 229, 160, .08);
      --transition: all .3s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      padding: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-main);
      background: var(--bg-root);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    a:hover {
      color: #00f0ac;
    }

    button {
      font-family: inherit;
    }

    a:focus-visible,
    button:focus-visible,
    .form-control:focus-visible,
    .accordion-button:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
      border-radius: var(--radius-sm);
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1040;
      background: rgba(8, 12, 20, .92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(255, 255, 255, .06);
      transition: box-shadow .3s, border-color .3s;
    }

    .site-header.scrolled {
      box-shadow: 0 8px 32px rgba(0, 0, 0, .35), inset 0 -1px 0 rgba(0, 229, 160, .08);
      border-color: rgba(0, 229, 160, .16);
    }

    .navbar {
      padding: .9rem 0;
    }

    .navbar-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-size: 1.28rem;
      font-weight: 700;
      letter-spacing: .5px;
      transition: var(--transition);
    }

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

    .brand-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 12px var(--primary-glow);
      display: inline-block;
      flex-shrink: 0;
    }

    .navbar-nav {
      gap: .3rem;
    }

    .nav-link {
      color: var(--text-sub);
      font-weight: 500;
      padding: .6rem 1rem !important;
      border-radius: 8px;
      position: relative;
      transition: color .25s, text-shadow .25s;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 1rem;
      right: 1rem;
      bottom: .32rem;
      height: 2px;
      border-radius: 2px;
      background: var(--primary);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform .3s;
      box-shadow: 0 0 8px var(--primary-glow);
    }

    .nav-link:hover {
      color: #fff;
    }

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

    .nav-link.active {
      color: var(--primary);
      text-shadow: 0 0 12px rgba(0, 229, 160, .3);
    }

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

    .nav-cta {
      background: var(--primary);
      color: #04121A;
      font-weight: 600;
      border: none;
      padding: .58rem 1.4rem;
      border-radius: 10px;
      transition: var(--transition);
      box-shadow: 0 0 18px rgba(0, 229, 160, .15);
      margin-left: .6rem;
      white-space: nowrap;
    }

    .nav-cta:hover {
      background: #00f0ac;
      color: #04121A;
      box-shadow: 0 0 28px rgba(0, 229, 160, .3);
      transform: translateY(-1px);
    }

    .navbar-toggler {
      border: 1px solid rgba(255, 255, 255, .18);
      padding: .4rem .55rem;
      border-radius: 8px;
      background: transparent;
      box-shadow: none !important;
      outline: none;
    }

    .toggler-bar {
      display: block;
      width: 20px;
      height: 2px;
      background: #CFD8E3;
      margin: 4px 0;
      border-radius: 2px;
      transition: all .3s;
    }

    .navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(1) {
      transform: translateY(6px) rotate(45deg);
      background: var(--primary);
    }

    .navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(2) {
      opacity: 0;
    }

    .navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(3) {
      transform: translateY(-6px) rotate(-45deg);
      background: var(--primary);
    }

    @media (max-width: 991.98px) {
      .navbar-collapse {
        background: rgba(8, 12, 20, .98);
        padding: 1rem 1rem .7rem;
        margin-top: .75rem;
        border: 1px solid rgba(255, 255, 255, .06);
        border-radius: var(--radius-md);
        border-top: 0;
      }
      .nav-cta {
        margin-left: 0;
        margin-top: .6rem;
        display: inline-flex;
        width: fit-content;
      }
    }

    /* ===== Page Hero ===== */
    .page-hero {
      position: relative;
      padding: 116px 0 76px;
      background:
        linear-gradient(100deg, rgba(10, 14, 23, .96) 0%, rgba(10, 14, 23, .82) 48%, rgba(10, 14, 23, .55) 100%),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-bottom: 1px solid rgba(255, 255, 255, .05);
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(0, 229, 160, .1);
      border: 1px solid rgba(0, 229, 160, .25);
      color: var(--primary);
      font-size: .82rem;
      font-weight: 500;
      padding: .38rem 1rem;
      border-radius: 999px;
      margin-bottom: 1.15rem;
      letter-spacing: .4px;
    }

    .hero-badge::before {
      content: '';
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 8px var(--primary-glow);
      flex-shrink: 0;
    }

    .hero-title {
      font-size: clamp(2rem, 4.2vw, 2.8rem);
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 1.1rem;
      letter-spacing: .5px;
    }

    .hero-title .accent {
      color: var(--primary);
      text-shadow: 0 0 24px rgba(0, 229, 160, .35);
    }

    .hero-lead {
      max-width: 680px;
      color: var(--text-sub);
      font-size: 1.05rem;
      line-height: 1.9;
      margin-bottom: 1.8rem;
    }

    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 1.1rem 1.8rem;
      color: var(--text-sub);
      font-size: .88rem;
      margin-top: .4rem;
    }

    .hero-meta i {
      color: var(--primary);
      margin-right: 6px;
    }

    /* ===== Buttons ===== */
    .btn-primary-cta {
      background: var(--primary);
      color: #04121A;
      font-weight: 600;
      padding: .78rem 1.8rem;
      border-radius: 10px;
      border: none;
      transition: var(--transition);
      box-shadow: 0 0 20px rgba(0, 229, 160, .15);
      white-space: nowrap;
    }

    .btn-primary-cta:hover {
      background: #00f0ac;
      color: #04121A;
      box-shadow: 0 0 30px rgba(0, 229, 160, .35);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: transparent;
      color: #E8EDF4;
      border: 1px solid rgba(255, 255, 255, .18);
      padding: .78rem 1.8rem;
      border-radius: 10px;
      font-weight: 500;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: 0 0 18px rgba(0, 229, 160, .12);
      transform: translateY(-2px);
    }

    /* ===== Info Strip ===== */
    .info-strip {
      background: rgba(255, 255, 255, .02);
      border-bottom: 1px solid var(--border-soft);
      padding: 30px 0;
    }

    .strip-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 14px 18px;
      background: rgba(255, 255, 255, .025);
      border: 1px solid rgba(255, 255, 255, .06);
      border-radius: var(--radius-md);
      height: 100%;
      transition: var(--transition);
    }

    .strip-item:hover {
      border-color: rgba(0, 229, 160, .3);
      box-shadow: var(--shadow-hover);
    }

    .strip-icon {
      width: 42px;
      height: 42px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-soft);
      color: var(--primary);
      font-size: 1rem;
      border: 1px solid rgba(0, 229, 160, .2);
      flex-shrink: 0;
    }

    .strip-title {
      font-size: .95rem;
      font-weight: 600;
      color: #D6DEE8;
      line-height: 1.4;
    }

    .strip-text {
      font-size: .8rem;
      color: var(--text-sub);
      line-height: 1.5;
      margin-top: 2px;
    }

    /* ===== Section ===== */
    .section {
      padding: 84px 0;
    }

    .section-alt {
      background: rgba(15, 22, 32, .45);
      border-top: 1px solid rgba(255, 255, 255, .04);
      border-bottom: 1px solid rgba(255, 255, 255, .04);
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 40px;
    }

    .section-title {
      font-size: 1.7rem;
      font-weight: 700;
      line-height: 1.4;
      letter-spacing: .3px;
      margin: 0 0 10px;
      color: #F0F4FA;
    }

    .section-sub {
      font-size: .96rem;
      color: var(--text-sub);
      line-height: 1.8;
      margin: 0;
    }

    /* ===== Feature Card ===== */
    .feature-card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, .06);
      border-radius: var(--radius-lg);
      overflow: hidden;
      height: 100%;
      transition: var(--transition);
      box-shadow: var(--shadow-card);
    }

    .feature-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 229, 160, .45);
      box-shadow: var(--shadow-hover);
    }

    .feature-card .card-img {
      height: 190px;
      overflow: hidden;
      position: relative;
    }

    .feature-card .card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .45s ease;
    }

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

    .feature-card .card-body {
      padding: 24px;
    }

    .feature-card .tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: .78rem;
      color: var(--accent);
      background: rgba(255, 179, 71, .1);
      padding: .28rem .7rem;
      border-radius: 999px;
      margin-bottom: 14px;
      border: 1px solid rgba(255, 179, 71, .18);
    }

    .feature-card h3 {
      font-size: 1.18rem;
      font-weight: 600;
      margin-bottom: 10px;
      color: #F0F4FA;
    }

    .feature-card p {
      color: var(--text-sub);
      font-size: .92rem;
      line-height: 1.75;
      margin-bottom: 14px;
    }

    .card-link {
      color: var(--primary);
      font-size: .9rem;
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: var(--transition);
    }

    .card-link:hover {
      color: #00f0ac;
      gap: 10px;
    }

    /* ===== Icon Card ===== */
    .icon-card {
      background: rgba(255, 255, 255, .03);
      border: 1px solid rgba(255, 255, 255, .06);
      border-radius: var(--radius-md);
      padding: 26px 24px;
      height: 100%;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .icon-card::before {
      content: '';
      position: absolute;
      inset: auto 0 0 0;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--primary), transparent);
      opacity: 0;
      transition: opacity .35s;
    }

    .icon-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 229, 160, .35);
      background: rgba(0, 229, 160, .04);
      box-shadow: var(--shadow-hover);
    }

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

    .icon-card .dot {
      position: absolute;
      top: 14px;
      right: 14px;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 8px rgba(0, 229, 160, .6);
    }

    .icon-card .icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-soft);
      color: var(--primary);
      font-size: 1.25rem;
      margin-bottom: 18px;
      border: 1px solid rgba(0, 229, 160, .18);
    }

    .icon-card h3 {
      font-size: 1.08rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: #F0F4FA;
    }

    .icon-card p {
      color: var(--text-sub);
      font-size: .88rem;
      line-height: 1.7;
      margin-bottom: 0;
    }

    /* ===== Step Path ===== */
    .step-card {
      position: relative;
      padding: 30px 26px;
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, .06);
      border-radius: var(--radius-lg);
      height: 100%;
      transition: var(--transition);
      box-shadow: var(--shadow-card);
    }

    .step-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 229, 160, .4);
      box-shadow: var(--shadow-hover);
    }

    .step-num {
      font-size: 2.4rem;
      font-weight: 800;
      color: transparent;
      -webkit-text-stroke: 1px rgba(0, 229, 160, .6);
      line-height: 1;
      margin-bottom: 16px;
      font-variant-numeric: tabular-nums;
    }

    .step-card h3 {
      font-size: 1.1rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: #F0F4FA;
    }

    .step-card p {
      color: var(--text-sub);
      font-size: .88rem;
      line-height: 1.75;
      margin-bottom: 0;
    }

    .step-arrow {
      position: absolute;
      right: -18px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--primary);
      font-size: 1.15rem;
      z-index: 2;
      text-shadow: 0 0 12px rgba(0, 229, 160, .3);
    }

    /* ===== FAQ ===== */
    .accordion {
      --bs-accordion-bg: transparent;
      --bs-accordion-border-color: rgba(255, 255, 255, .06);
      --bs-accordion-border-radius: var(--radius-md);
      --bs-accordion-inner-border-radius: var(--radius-md);
      --bs-accordion-btn-focus-box-shadow: none;
    }

    .accordion-item {
      background: rgba(255, 255, 255, .025);
      border: 1px solid rgba(255, 255, 255, .06);
      margin-bottom: 14px;
      border-radius: var(--radius-md) !important;
      overflow: hidden;
      transition: var(--transition);
    }

    .accordion-item:has(.accordion-button:not(.collapsed)) {
      border-color: rgba(0, 229, 160, .35);
      box-shadow: var(--shadow-hover);
    }

    .accordion-button {
      padding: 1.05rem 1.3rem;
      background: transparent;
      color: var(--text-main);
      font-weight: 600;
      font-size: 1rem;
      box-shadow: none !important;
      border: none;
    }

    .accordion-button:not(.collapsed) {
      background: rgba(0, 229, 160, .05);
      color: var(--primary);
    }

    .accordion-button:focus {
      box-shadow: none !important;
    }

    .accordion-button .accordion-icon {
      margin-left: auto;
      color: var(--text-muted);
      font-size: .9rem;
      transition: transform .35s, color .35s;
      flex-shrink: 0;
    }

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

    .accordion-body {
      padding: 0 1.3rem 1.2rem;
      color: var(--text-sub);
      font-size: .93rem;
      line-height: 1.85;
    }

    /* ===== CTA ===== */
    .cta-section {
      position: relative;
      padding: 88px 0;
      background: linear-gradient(120deg, rgba(0, 229, 160, .08), rgba(10, 14, 23, .92) 55%),
        url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      border-top: 1px solid rgba(0, 229, 160, .15);
      border-bottom: 1px solid rgba(255, 255, 255, .05);
    }

    .cta-title {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #F0F4FA;
    }

    .cta-text {
      color: var(--text-sub);
      font-size: 1rem;
      margin-bottom: 8px;
    }

    .cta-form {
      display: flex;
      gap: 12px;
      max-width: 520px;
      margin: 26px auto 14px;
    }

    .cta-form .form-control {
      background: var(--bg-panel);
      border: 1px solid #2A3546;
      color: var(--text-main);
      border-radius: 10px;
      padding: .8rem 1.1rem;
      font-size: .92rem;
      transition: var(--transition);
    }

    .cta-form .form-control::placeholder {
      color: var(--text-muted);
    }

    .cta-form .form-control:focus {
      background: var(--bg-panel);
      border-color: var(--primary);
      color: var(--text-main);
      box-shadow: 0 0 0 3px rgba(0, 229, 160, .15);
      outline: none;
    }

    .cta-note {
      color: var(--text-muted);
      font-size: .8rem;
      margin-top: 6px;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--bg-deep);
      border-top: 1px solid rgba(0, 229, 160, .14);
      padding: 64px 0 28px;
      color: var(--text-sub);
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .footer-desc {
      color: var(--text-sub);
      font-size: .92rem;
      line-height: 1.8;
      max-width: 360px;
      margin-bottom: 0;
    }

    .footer-title {
      color: #EAF0F8;
      font-weight: 600;
      margin-bottom: 16px;
      font-size: 1.05rem;
      position: relative;
      padding-bottom: 10px;
    }

    .footer-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 34px;
      height: 2px;
      background: var(--primary);
      box-shadow: 0 0 10px rgba(0, 229, 160, .5);
      border-radius: 2px;
    }

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

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

    .footer-links a {
      color: var(--text-sub);
      font-size: .92rem;
      transition: var(--transition);
    }

    .footer-links a:hover {
      color: var(--primary);
      padding-left: 6px;
    }

    .footer-info i {
      color: var(--primary);
      width: 20px;
      margin-right: 4px;
    }

    .copyright {
      border-top: 1px solid rgba(255, 255, 255, .06);
      margin-top: 40px;
      padding-top: 20px;
      text-align: center;
      font-size: .85rem;
      color: var(--text-sub);
    }

    .copyright a {
      color: var(--text-sub);
    }

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

    /* ===== Responsive ===== */
    @media (max-width: 991.98px) {
      .section {
        padding: 64px 0;
      }
      .page-hero {
        padding: 96px 0 56px;
      }
      .hero-title {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.4rem;
      }
      .step-arrow {
        display: none;
      }
      .cta-section {
        padding: 64px 0;
      }
    }

    @media (max-width: 767.98px) {
      .section {
        padding: 48px 0;
      }
      .page-hero {
        padding: 76px 0 44px;
      }
      .hero-title {
        font-size: 1.55rem;
      }
      .hero-lead {
        font-size: .95rem;
      }
      .section-title {
        font-size: 1.3rem;
      }
      .section-head {
        margin-bottom: 30px;
      }
      .cta-title {
        font-size: 1.5rem;
      }
      .cta-form {
        flex-direction: column;
      }
      .cta-form .btn-primary-cta {
        width: 100%;
      }
      .feature-card .card-img {
        height: 170px;
      }
    }