/* roulang page: index */
:root {
  --primary: #00E07A;
  --primary-dim: rgba(0, 224, 122, 0.15);
  --primary-glow: rgba(0, 224, 122, 0.4);
  --accent: #FF4D2E;
  --accent-dim: rgba(255, 77, 46, 0.12);
  --cyan: #00E5FF;
  --bg-main: #0B1016;
  --bg-sub: #131A22;
  --bg-deep: #080C10;
  --card-bg: rgba(255, 255, 255, 0.04);
  --card-bg-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.06);
  --border-light: rgba(255, 255, 255, 0.12);
  --text-main: #F0F4F8;
  --text-body: #B8C4D0;
  --text-muted: #7A8794;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --radius-xs: 4px;
  --shadow-glow: 0 0 24px rgba(0, 224, 122, 0.15);
  --shadow-glow-sm: 0 0 12px rgba(0, 224, 122, 0.4);
  --space-section: 100px;
  --space-section-mobile: 56px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  background: var(--bg-main);
  color: var(--text-body);
  line-height: 1.75;
  font-size: 16px;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease;
}
a:hover {
  color: var(--cyan);
}
img {
  max-width: 100%;
  height: auto;
}
button, input {
  font-family: var(--font-family);
}
.container {
  max-width: 1320px;
  padding-left: 20px;
  padding-right: 20px;
}
.section {
  padding: var(--space-section) 0;
  position: relative;
}
.section-sm {
  padding: 56px 0;
}
.bg-sub {
  background: var(--bg-sub);
}
.neon-divider {
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--cyan), transparent);
  border: none;
  margin: 0;
}
.neon-divider-reverse {
  background: linear-gradient(270deg, var(--primary), var(--cyan), transparent);
}

/* ======= Header / Nav ======= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 16, 22, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--cyan), transparent) 1;
}
.navbar-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  padding: 8px 0;
}
.brand-cn {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.5px;
}
.brand-en {
  font-size: 10px;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 400;
}
.site-nav .nav-link {
  color: var(--text-body);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 16px !important;
  position: relative;
  transition: color 0.25s ease;
}
.site-nav .nav-link:hover {
  color: var(--primary);
}
.site-nav .nav-link.active {
  color: var(--primary);
  text-shadow: 0 0 12px rgba(0, 224, 122, 0.6);
}
.site-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary-glow);
  border-radius: 2px;
}
.btn-pill {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.25s ease;
}
.btn-pill:hover {
  background: #ff3a1a;
  color: #fff;
  box-shadow: 0 0 16px rgba(255, 77, 46, 0.4);
  transform: translateY(-1px);
}
.navbar-toggler {
  border: 1px solid var(--border-light);
  background: transparent;
  color: var(--text-main);
  padding: 6px 10px;
}
.navbar-toggler:hover {
  border-color: var(--primary);
}
.navbar-toggler i {
  font-size: 18px;
}
.mobile-nav {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 12px 20px;
}
.mobile-nav a {
  display: block;
  color: var(--text-body);
  padding: 10px 0;
  font-size: 15px;
  border-bottom: 1px solid var(--border);
}
.mobile-nav a:last-child {
  border-bottom: none;
}
.mobile-nav a.active {
  color: var(--primary);
}
.mobile-nav a:hover {
  color: var(--primary);
}

/* ======= Hero ======= */
.hero-section {
  position: relative;
  padding: 72px 0 72px;
  background: linear-gradient(180deg, var(--bg-main) 0%, var(--bg-sub) 100%);
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, rgba(255,255,255,0.015) 0px, rgba(255,255,255,0.015) 1px, transparent 1px, transparent 12px);
  pointer-events: none;
}
.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 340px;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  box-shadow: 0 0 40px rgba(0, 224, 122, 0.1);
}
.hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,16,22,0.2) 0%, rgba(11,16,22,0.6) 50%, rgba(11,16,22,0.9) 100%);
}
.live-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(11,16,22,0.7);
  border: 1px solid var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-xs);
  letter-spacing: 1px;
}
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: livePulse 1.5s infinite;
}
@keyframes livePulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 77, 46, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(255, 77, 46, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 77, 46, 0); }
}
.hero-content {
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--primary);
  display: inline-block;
}
.hero-title {
  font-size: 44px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.hero-title span {
  color: var(--primary);
  text-shadow: 0 0 20px rgba(0, 224, 122, 0.3);
}
.hero-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 460px;
  line-height: 1.8;
}
.countdown {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.countdown-box {
  background: rgba(11, 16, 22, 0.8);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  text-align: center;
  min-width: 72px;
}
.countdown-box .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  text-shadow: 0 0 12px var(--primary-glow);
}
.countdown-box .label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}
.countdown-live {
  background: rgba(255, 77, 46, 0.15);
  border-color: var(--accent);
}
.countdown-live .num {
  color: var(--accent);
  text-shadow: 0 0 12px rgba(255, 77, 46, 0.4);
}
.highlight-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
}
.highlight-list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--text-body);
}
.highlight-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 18px;
  background: var(--primary);
  border-radius: 2px;
}
.btn-primary-glow {
  background: var(--primary);
  color: #04100a;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 700;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary-glow:hover {
  background: #00f08a;
  color: #04100a;
  box-shadow: 0 0 24px var(--primary-glow);
  transform: translateY(-2px);
}
.btn-outline-neon {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline-neon:hover {
  background: var(--primary-dim);
  color: var(--primary);
  box-shadow: 0 0 16px var(--primary-glow);
}

/* ======= Stats Bar ======= */
.stats-bar {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
  background: var(--bg-deep);
}
.stats-item {
  text-align: center;
  padding: 12px 20px;
  border-right: 1px solid var(--border);
}
.stats-item:last-child {
  border-right: none;
}
.stats-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 20px rgba(0, 224, 122, 0.2);
}
.stats-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ======= Section Headers ======= */
.section-head {
  margin-bottom: 48px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-dim);
  border-radius: var(--radius-xs);
  padding: 4px 12px;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.section-title {
  font-size: 34px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 560px;
}

/* ======= Category Cards ======= */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.cat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: all 0.3s ease;
  display: block;
}
.cat-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
  background: var(--card-bg-hover);
}
.cat-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 22px;
  color: var(--primary);
  transition: all 0.3s ease;
}
.cat-card:hover .cat-icon {
  box-shadow: 0 0 16px var(--primary-glow);
}
.cat-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}
.cat-brief {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}
@media (max-width: 991px) {
  .cat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 520px) {
  .cat-grid {
    grid-template-columns: 1fr;
  }
}

/* ======= News List Cards ======= */
.news-card {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  margin-bottom: 16px;
  transition: all 0.3s ease;
  cursor: pointer;
}
.news-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
  background: var(--card-bg-hover);
}
.news-thumb {
  flex-shrink: 0;
  width: 260px;
  height: 146px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-sub);
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-thumb img {
  transform: scale(1.03);
}
.news-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.news-tag {
  font-size: 12px;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-xs);
  padding: 2px 8px;
  background: transparent;
}
.news-time {
  font-size: 12px;
  color: var(--text-muted);
}
.news-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  border: 2px dashed rgba(0, 224, 122, 0.3);
  border-radius: var(--radius-lg);
  text-align: center;
}
.empty-state i {
  font-size: 40px;
  color: var(--primary);
  margin-bottom: 16px;
  opacity: 0.6;
}
.empty-state p {
  color: var(--text-muted);
  font-size: 15px;
  margin: 0;
}
@media (max-width: 768px) {
  .news-card {
    flex-direction: column;
    padding: 12px;
  }
  .news-thumb {
    width: 100%;
    height: 180px;
  }
}

/* ======= Featured Grid ======= */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.featured-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 280px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}
.featured-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(11, 16, 22, 0.85) 100%);
}
.featured-card:hover {
  box-shadow: 0 0 32px rgba(0, 224, 122, 0.2);
  transform: translateY(-4px);
  border-color: var(--primary);
}
.featured-body {
  position: relative;
  z-index: 1;
  padding: 24px;
  width: 100%;
}
.featured-tag {
  font-size: 12px;
  color: var(--primary);
  background: rgba(11, 16, 22, 0.7);
  border-radius: var(--radius-xs);
  padding: 3px 10px;
  display: inline-block;
  margin-bottom: 10px;
  border: 1px solid rgba(0, 224, 122, 0.3);
}
.featured-title {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
  line-height: 1.4;
}
.featured-meta {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}
@media (max-width: 768px) {
  .featured-grid {
    grid-template-columns: 1fr;
  }
}

/* ======= CTA Banner ======= */
.cta-banner {
  background: linear-gradient(120deg, var(--primary), var(--cyan));
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, rgba(255,255,255,0.04) 0px, rgba(255,255,255,0.04) 2px, transparent 2px, transparent 10px);
}
.cta-banner h2 {
  color: #04100a;
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.cta-banner p {
  color: rgba(4, 16, 10, 0.75);
  font-size: 16px;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}
.btn-dark-solid {
  background: #0B1016;
  color: var(--primary);
  border: none;
  border-radius: var(--radius-sm);
  padding: 13px 32px;
  font-size: 15px;
  font-weight: 700;
  transition: all 0.25s ease;
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-dark-solid:hover {
  background: #0e1520;
  color: var(--primary);
  box-shadow: 0 0 24px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}
@media (max-width: 768px) {
  .cta-banner {
    padding: 40px 24px;
  }
  .cta-banner h2 {
    font-size: 24px;
  }
}

/* ======= FAQ ======= */
.faq-wrap .accordion-item {
  background: var(--card-bg);
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-md) !important;
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-wrap .accordion-item:last-child {
  margin-bottom: 0;
}
.faq-wrap .accordion-button {
  background: transparent;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 600;
  padding: 18px 20px;
  box-shadow: none;
  border: none;
}
.faq-wrap .accordion-button:not(.collapsed) {
  color: var(--primary);
  background: rgba(0, 224, 122, 0.05);
}
.faq-wrap .accordion-button:focus {
  box-shadow: none;
  border-color: transparent;
}
.faq-wrap .accordion-button::after {
  filter: invert(1) brightness(1.5);
  transition: transform 0.3s ease;
}
.faq-wrap .accordion-body {
  padding: 0 20px 18px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.faq-num {
  display: inline-block;
  width: 28px;
  color: var(--primary);
  font-weight: 800;
  font-size: 14px;
  margin-right: 8px;
  font-variant-numeric: tabular-nums;
}

/* ======= Footer ======= */
.site-footer {
  background: var(--bg-deep);
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--cyan), transparent) 1;
  padding: 60px 0 0;
}
.footer-brand {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}
.footer-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 280px;
  margin-bottom: 24px;
}
.footer-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: all 0.2s ease;
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  margin-top: 48px;
  padding: 20px 0;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

/* ======= Responsive ======= */
@media (max-width: 991px) {
  .hero-title {
    font-size: 34px;
  }
  .stats-num {
    font-size: 30px;
  }
  .section {
    padding: 64px 0;
  }
  .section-title {
    font-size: 28px;
  }
}
@media (max-width: 768px) {
  .hero-section {
    padding: 40px 0;
  }
  .hero-title {
    font-size: 28px;
  }
  .hero-visual {
    min-height: 240px;
    margin-bottom: 24px;
  }
  .countdown-box {
    min-width: 60px;
    padding: 10px 12px;
  }
  .countdown-box .num {
    font-size: 22px;
  }
  .stats-bar .row > div {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
  }
  .stats-bar .row > div:last-child {
    border-bottom: none;
  }
  .section {
    padding: 48px 0;
  }
  .section-title {
    font-size: 24px;
  }
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 520px) {
  .category-grid {
    grid-template-columns: 1fr;
  }
  .btn-primary-glow, .btn-outline-neon, .btn-dark-solid {
    width: 100%;
    justify-content: center;
  }
  .hero-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #00E07A;
  --primary-dim: rgba(0,224,122,.12);
  --primary-sub: rgba(0,224,122,.25);
  --accent: #FF4D2E;
  --cyan: #00E5FF;
  --bg-dark: #0B1016;
  --bg-panel: #131A22;
  --bg-deep: #080C10;
  --card-bg: rgba(255,255,255,.04);
  --card-bg-hover: rgba(255,255,255,.08);
  --border-color: rgba(255,255,255,.06);
  --border-strong: rgba(255,255,255,.12);
  --text-main: #F2F6F4;
  --text-dim: #9DA9A3;
  --text-mute: #65736D;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --shadow-card: 0 4px 20px rgba(0,0,0,.35);
  --shadow-primary: 0 0 24px rgba(0,224,122,.15);
  --glow-primary: 0 0 12px rgba(0,224,122,.4);
  --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --nav-height: 68px;
  --section-space: 96px;
}
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background-color: var(--bg-dark);
  background-image: repeating-linear-gradient(45deg, rgba(255,255,255,.015) 0 1px, transparent 1px 24px);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
*,*::before,*::after { box-sizing: border-box; }
a { color: inherit; text-decoration: none; transition: color .25s ease, background-color .25s ease, border-color .25s ease, box-shadow .25s ease; }
img { max-width: 100%; height: auto; }
button, input { font-family: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.container { max-width: 1320px; }
section { position: relative; }
.section-block { padding: var(--section-space) 0; }
.section-head { margin-bottom: 40px; }
.section-kicker {
  display: inline-block;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 10px;
  padding: 4px 12px;
  border: 1px solid var(--primary-sub);
  border-radius: 4px;
  background: var(--primary-dim);
}
.section-head h2 { font-size: 34px; font-weight: 800; margin: 0 0 12px; letter-spacing: -.02em; }
.section-head p { color: var(--text-dim); font-size: 16px; max-width: 720px; margin: 0; }

/* ===== 导航 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1030;
  min-height: var(--nav-height);
  padding: 0;
  background: rgba(11,16,22,.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.navbar::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--cyan), transparent);
  opacity: .8;
}
.navbar-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 12px 0;
  line-height: 1.2;
}
.brand-en {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--primary);
  text-transform: uppercase;
}
.brand-cn {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: .02em;
}
.navbar-toggler {
  border: 1px solid var(--border-strong);
  color: var(--text-main);
  width: 44px;
  height: 40px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  border-radius: var(--radius-sm);
  background: transparent;
}
.navbar-toggler:hover { border-color: var(--primary); color: var(--primary); }
.navbar-toggler:focus { box-shadow: none; border-color: var(--primary); }
.site-nav { gap: 4px; }
.site-nav .nav-link {
  color: var(--text-dim);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  position: relative;
}
.site-nav .nav-link:hover { color: var(--primary); }
.site-nav .nav-link.active {
  color: var(--primary);
  text-shadow: 0 0 12px rgba(0,224,122,.6);
}
.site-nav .nav-link.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(0,224,122,.75);
  border-radius: 2px;
}
.btn-pill {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 600;
  transition: all .25s ease;
}
.btn-pill:hover { background: #ff6a4d; color: #fff; box-shadow: 0 0 18px rgba(255,77,46,.45); transform: translateY(-1px); }

/* ===== 通用按钮 ===== */
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: #0a1a12;
  font-weight: 700;
  font-size: 14px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 24px;
  transition: all .25s ease;
  box-shadow: 0 0 0 rgba(0,224,122,0);
}
.btn-primary-custom:hover { background: #0dff8c; color: #0a1a12; box-shadow: 0 0 22px rgba(0,224,122,.45); transform: translateY(-1px); }
.btn-outline-light-custom {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--text-main);
  border: 1px solid rgba(255,255,255,.3);
  font-weight: 500;
  font-size: 14px;
  border-radius: var(--radius-sm);
  padding: 10px 24px;
  transition: all .25s ease;
}
.btn-outline-light-custom:hover { background: rgba(0,224,122,.12); border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 7px 16px; font-size: 13px; }

/* ===== 标签 ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-dim);
  border: 1px solid var(--primary-sub);
  border-radius: 4px;
  padding: 3px 10px;
  line-height: 1.6;
}
.tag-live { color: var(--accent); background: rgba(255,77,46,.12); border-color: rgba(255,77,46,.35); }
.tag-live i { font-size: 9px; animation: pulse-dot 1.4s infinite; }
@keyframes pulse-dot {
  0%,100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255,77,46,.5); }
  50% { opacity: .55; box-shadow: 0 0 0 5px rgba(255,77,46,0); }
}
.tag-hot { color: var(--accent); border-color: rgba(255,77,46,.4); background: rgba(255,77,46,.1); }

/* ===== Hero 横幅 ===== */
.page-hero {
  position: relative;
  padding: 110px 0 100px;
  background:
    linear-gradient(100deg, rgba(11,16,22,.96) 0%, rgba(11,16,22,.78) 45%, rgba(19,26,34,.55) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, var(--primary), transparent);
}
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan);
  background: rgba(0,229,255,.08);
  border: 1px solid rgba(0,229,255,.25);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
  letter-spacing: .05em;
}
.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -.02em;
  margin: 0 0 18px;
  line-height: 1.25;
  color: var(--text-main);
}
.page-hero h1 em { font-style: normal; color: var(--primary); text-shadow: var(--glow-primary); }
.hero-lead {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 680px;
  line-height: 1.8;
  margin: 0 0 26px;
}
.hero-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }

/* ===== 数据条 ===== */
.stats-strip {
  padding: 42px 0;
  background: var(--bg-panel);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.stat-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 18px rgba(0,224,122,.25);
  line-height: 1.15;
}
.stat-num .plus { font-size: 22px; font-weight: 700; color: var(--text-dim); }
.stat-label { font-size: 14px; color: var(--text-dim); margin-top: 4px; letter-spacing: .08em; }
.stats-strip .col { position: relative; }
.stats-strip .col:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(255,255,255,.08);
}

/* ===== 特色卡片 ===== */
.feature-grid { background: var(--bg-dark); }
.feature-card {
  height: 100%;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all .3s ease;
}
.feature-card:hover {
  background: var(--card-bg-hover);
  border-color: var(--primary-sub);
  box-shadow: var(--shadow-primary);
  transform: translateY(-4px);
}
.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--primary-dim);
  color: var(--primary);
  font-size: 21px;
  margin-bottom: 20px;
  border: 1px solid var(--primary-sub);
}
.feature-card h3 { font-size: 19px; font-weight: 700; margin: 0 0 10px; }
.feature-card p { color: var(--text-dim); font-size: 14px; margin: 0; line-height: 1.75; }

/* ===== 直播排期时间线 ===== */
.schedule-section { background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-panel) 100%); }
.timeline-list { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline-list::before {
  content: '';
  position: absolute;
  left: 138px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--primary), rgba(0,224,122,.1), transparent);
}
.timeline-item {
  position: relative;
  padding: 0 0 30px 190px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-meta {
  position: absolute;
  left: 0;
  top: 6px;
  width: 110px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
}
.timeline-date { display: block; color: var(--text-main); font-size: 15px; font-weight: 700; }
.timeline-time { display: block; color: var(--primary); font-size: 18px; font-weight: 800; margin-top: 2px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: 132px;
  top: 14px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 2px solid var(--primary);
  box-shadow: 0 0 12px rgba(0,224,122,.75);
  z-index: 2;
}
.timeline-card {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px;
  transition: all .3s ease;
}
.timeline-card:hover { background: var(--card-bg-hover); border-color: var(--primary-sub); box-shadow: var(--shadow-primary); }
.timeline-thumb { flex: 0 0 200px; }
.timeline-thumb img { width: 100%; height: 120px; object-fit: cover; border-radius: var(--radius-md); display: block; }
.timeline-content { flex: 1; min-width: 0; }
.timeline-content h3 { font-size: 19px; font-weight: 700; margin: 0 0 8px; }
.timeline-content p { color: var(--text-dim); font-size: 14px; margin: 0 0 12px; line-height: 1.7; }
.timeline-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); }
.timeline-link:hover { text-shadow: var(--glow-primary); }

/* ===== 观看流程 ===== */
.steps-section { background: var(--bg-panel); }
.steps-row { gap: 24px 0; }
.step-col {
  text-align: center;
  padding: 30px 24px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--bg-dark);
  margin-bottom: 0;
  transition: all .3s ease;
}
.step-col:hover { border-color: var(--primary-sub); box-shadow: var(--shadow-primary); }
.step-num {
  font-size: 44px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--primary);
  line-height: 1;
  margin-bottom: 14px;
  font-variant-numeric: tabular-nums;
}
.step-col h3 { font-size: 19px; font-weight: 700; margin: 0 0 10px; }
.step-col p { color: var(--text-dim); font-size: 14px; margin: 0; }

/* ===== 热门直播推荐 ===== */
.recommend-section { background: var(--bg-dark); }
.rec-card {
  position: relative;
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  min-height: 240px;
  transition: all .3s ease;
}
.rec-card img { width: 100%; height: 240px; object-fit: cover; display: block; transition: transform .4s ease; }
.rec-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,16,22,0) 30%, rgba(11,16,22,.92) 100%);
}
.rec-card:hover { border-color: var(--primary-sub); box-shadow: var(--shadow-primary); }
.rec-card:hover img { transform: scale(1.03); }
.rec-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 3;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(11,16,22,.8);
  border: 1px solid var(--primary-sub);
  border-radius: 4px;
  padding: 4px 12px;
  backdrop-filter: blur(4px);
}
.rec-info {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 16px;
  z-index: 3;
}
.rec-info h3 { font-size: 21px; font-weight: 800; margin: 0 0 4px; color: #fff; }
.rec-info p { font-size: 13px; color: rgba(255,255,255,.72); margin: 0; }

/* ===== CTA 横幅 ===== */
.cta-section { padding: 80px 0; }
.cta-box {
  position: relative;
  border-radius: 16px;
  padding: 56px 40px;
  text-align: center;
  background: linear-gradient(120deg, var(--primary), var(--cyan));
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(45deg, rgba(255,255,255,.08) 0 2px, transparent 2px 14px);
}
.cta-box h2 { position: relative; z-index: 1; color: #08180f; font-size: 32px; font-weight: 800; margin: 0 0 12px; }
.cta-box p { position: relative; z-index: 1; color: rgba(8,24,15,.78); font-size: 16px; margin: 0 0 30px; }
.cta-form { position: relative; z-index: 1; display: flex; gap: 10px; max-width: 520px; margin: 0 auto; justify-content: center; flex-wrap: wrap; }
.cta-form .form-control {
  flex: 1;
  min-width: 220px;
  background: rgba(8,24,15,.85);
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
  border-radius: 8px;
  padding: 12px 18px;
  font-size: 14px;
}
.cta-form .form-control::placeholder { color: rgba(255,255,255,.55); }
.cta-form .form-control:focus { background: rgba(8,24,15,.92); border-color: #08180f; box-shadow: 0 0 0 3px rgba(8,24,15,.25); color: #fff; }
.cta-form .btn-cta {
  background: #08180f;
  color: var(--primary);
  border: none;
  border-radius: 8px;
  padding: 12px 28px;
  font-weight: 700;
  font-size: 14px;
  transition: all .25s ease;
}
.cta-form .btn-cta:hover { background: #0c2415; color: #1cf591; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(0,0,0,.25); }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-panel); border-top: 1px solid var(--border-color); }
.custom-accordion .accordion-item {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg) !important;
  margin-bottom: 14px;
  overflow: hidden;
}
.custom-accordion .accordion-button {
  background: transparent;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  padding: 20px 22px;
  box-shadow: none;
  border: none;
}
.custom-accordion .accordion-button::after {
  background-image: none;
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 14px;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  width: auto;
  height: auto;
}
.custom-accordion .accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
  color: var(--primary);
}
.custom-accordion .accordion-button:not(.collapsed) { color: var(--primary); background: rgba(0,224,122,.05); }
.custom-accordion .accordion-button:focus { box-shadow: none; }
.custom-accordion .accordion-body { color: var(--text-dim); font-size: 14px; padding: 0 22px 20px; line-height: 1.8; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--cyan), transparent) 1;
  padding: 70px 0 0;
  margin-top: 0;
}
.footer-brand { font-size: 22px; font-weight: 800; color: var(--text-main); margin-bottom: 10px; }
.footer-desc { color: var(--text-mute); font-size: 14px; line-height: 1.8; max-width: 360px; }
.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}
.footer-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
  box-shadow: var(--glow-primary);
}
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: var(--text-mute); font-size: 14px; }
.footer-links a:hover { color: var(--primary); }
.footer-bottom {
  margin-top: 50px;
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 20px 0;
}
.footer-bottom p { color: var(--text-mute); font-size: 13px; text-align: center; margin: 0; }

/* ===== 响应式 ===== */
@media (max-width: 991.98px) {
  :root { --section-space: 72px; }
  .navbar-collapse {
    background: #0d131b;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 12px;
    margin-top: 10px;
  }
  .site-nav { gap: 2px; }
  .site-nav .nav-link { padding: 10px 14px; }
  .navbar .btn-pill { margin-top: 12px; width: 100%; justify-content: center; }
  .page-hero { padding: 90px 0 80px; }
  .page-hero h1 { font-size: 38px; }
  .timeline-list::before { left: 22px; }
  .timeline-item { padding-left: 60px; }
  .timeline-meta { width: auto; text-align: left; top: -2px; }
  .timeline-item::before { left: 16px; top: 14px; }
  .timeline-date { font-size: 13px; }
  .timeline-time { font-size: 14px; }
  .timeline-card { flex-direction: column; }
  .timeline-thumb { flex: 0 0 auto; }
  .timeline-thumb img { height: 150px; }
}
@media (max-width: 767.98px) {
  :root { --section-space: 56px; }
  .nav-container { padding: 0 12px; }
  .brand-en { font-size: 10px; }
  .brand-cn { font-size: 17px; }
  .page-hero { padding: 72px 0 64px; }
  .page-hero h1 { font-size: 30px; }
  .hero-lead { font-size: 15px; }
  .section-head h2 { font-size: 26px; }
  .section-kicker { font-size: 12px; }
  .stat-num { font-size: 32px; }
  .steps-row { row-gap: 16px !important; }
  .cta-box { padding: 44px 24px; }
  .cta-box h2 { font-size: 24px; }
  .footer-brand { font-size: 19px; }
}
@media (max-width: 575.98px) {
  .container { padding-left: 14px; padding-right: 14px; }
  .nav-link.site-link { font-size: 14px; }
  .page-hero h1 { font-size: 26px; }
  .hero-tags .btn { width: 100%; justify-content: center; }
  .timeline-item { padding-left: 52px; }
  .timeline-thumb img { height: 130px; }
  .feature-card { padding: 22px 18px; }
  .rec-card, .rec-card img { min-height: 200px; height: 200px; }
  .cta-form { flex-direction: column; }
  .cta-form .form-control { width: 100%; min-width: 0; }
  .cta-form .btn-cta { width: 100%; }
}

/* roulang page: article */
:root {
  --primary: #00E07A;
  --primary-dim: rgba(0, 224, 122, 0.12);
  --accent: #FF4D2E;
  --accent-dim: rgba(255, 77, 46, 0.15);
  --cyan: #00E5FF;
  --bg-dark: #0B1016;
  --bg-panel: #131A22;
  --bg-deep: #080C10;
  --card-bg: rgba(255, 255, 255, 0.04);
  --card-bg-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.12);
  --text: #EAF6EF;
  --text-soft: #B7C4CE;
  --text-muted: #8C9BA6;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --shadow-primary: rgba(0, 224, 122, 0.3);
  --shadow-accent: rgba(255, 77, 46, 0.35);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  background-image: repeating-linear-gradient(45deg, rgba(255,255,255,0.012) 0, rgba(255,255,255,0.012) 1px, transparent 1px, transparent 14px);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .25s ease, border-color .25s ease, box-shadow .25s ease;
}
a:hover {
  color: var(--cyan);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
ul, ol {
  margin: 0;
  padding: 0;
}
.container {
  max-width: 1320px;
}
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.12);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(0,224,122,0.35);
}

/* ===== Buttons ===== */
.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
  padding: 10px 24px;
  border: none;
  transition: all .3s ease;
}
.btn-primary {
  background: var(--primary);
  color: #04140C !important;
  border: 1px solid var(--primary);
  box-shadow: 0 0 0 rgba(0,224,122,0);
}
.btn-primary:hover {
  background: #00ff89;
  border-color: #00ff89;
  box-shadow: 0 0 22px var(--shadow-primary);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-soft);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-dim);
}
.btn-pill {
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 8px 22px;
  border: none;
  font-weight: 600;
  box-shadow: 0 0 0 rgba(255,77,46,0);
}
.btn-pill:hover {
  color: #fff;
  background: #ff6a4e;
  box-shadow: 0 0 18px var(--shadow-accent);
  transform: translateY(-1px);
}
.btn-dark {
  background: var(--bg-dark);
  color: var(--primary);
  border: 1px solid rgba(4,20,12,0.2);
  font-weight: 700;
  padding: 12px 30px;
  border-radius: var(--radius-sm);
}
.btn-dark:hover {
  color: var(--primary);
  background: #0f1923;
  box-shadow: 0 8px 28px rgba(0,0,0,0.3);
  transform: translateY(-2px);
}

/* ===== Navbar ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(11, 16, 22, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 2px solid transparent;
}
.site-header::after {
  content: '';
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--cyan), transparent);
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  pointer-events: none;
}
.navbar {
  min-height: 68px;
  padding: 0;
}
.navbar-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
  padding: 10px 0;
}
.brand-cn {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text);
}
.brand-en {
  font-size: 11px;
  letter-spacing: 2.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 2px;
}
.navbar-toggler {
  border: 1px solid var(--border-strong);
  color: var(--primary);
  padding: 6px 14px;
}
.navbar-toggler:hover {
  border-color: var(--primary);
}
.navbar-toggler:focus {
  box-shadow: none;
}
.site-header .navbar-nav .nav-link {
  color: var(--text-soft);
  font-size: 15px;
  font-weight: 500;
  padding: 23px 16px;
  position: relative;
  transition: color .3s ease, text-shadow .3s ease;
}
.site-header .navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 16px;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 12px var(--shadow-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s ease;
}
.site-header .navbar-nav .nav-link:hover,
.site-header .navbar-nav .nav-link:focus,
.site-header .navbar-nav .nav-link.active {
  color: var(--primary);
  text-shadow: 0 0 12px rgba(0,224,122,0.55);
}
.site-header .navbar-nav .nav-link.active::after,
.site-header .navbar-nav .nav-link:hover::after {
  transform: scaleX(1);
}

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  background: linear-gradient(160deg, rgba(11,16,22,0.94), rgba(19,26,34,0.78)), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  padding: 64px 0 60px;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(0,224,122,0.08), transparent 65%);
  pointer-events: none;
}
.breadcrumb-nav {
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 1;
}
.breadcrumb-nav a {
  color: var(--text-soft);
}
.breadcrumb-nav a:hover {
  color: var(--primary);
}
.breadcrumb-nav .sep {
  color: rgba(255,255,255,0.25);
}
.breadcrumb-nav .crumb-current {
  color: var(--text-muted);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.5px;
  max-width: 900px;
  margin: 24px 0 0;
  color: var(--text);
  text-shadow: 0 0 22px rgba(0,224,122,0.22);
  position: relative;
  z-index: 1;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
  position: relative;
  z-index: 1;
}
.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  color: var(--text-muted);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  padding: 5px 14px;
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
}
.article-meta .meta-item i {
  color: var(--primary);
  font-size: 13px;
}
.meta-divider {
  width: 1px;
  height: 14px;
  background: var(--border-strong);
}
.article-summary {
  max-width: 780px;
  margin: 22px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
  position: relative;
  z-index: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Article Body ===== */
.article-body-wrap {
  padding: 64px 0 72px;
  background-image: linear-gradient(0deg, rgba(255,255,255,0.012), transparent 20%),
    repeating-linear-gradient(-45deg, rgba(255,255,255,0.008) 0, rgba(255,255,255,0.008) 1px, transparent 1px, transparent 16px);
}
.article-shell {
  max-width: 760px;
  margin: 0 auto;
}
.article-content {
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--text-soft);
}
.article-content h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--text);
  margin: 36px 0 14px;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text);
  margin: 30px 0 12px;
}
.article-content h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin: 24px 0 10px;
}
.article-content p {
  margin-bottom: 26px;
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content img {
  border-radius: var(--radius-lg);
  margin: 28px 0;
  border: 1px solid var(--border);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}
.article-content blockquote {
  border-left: 3px solid var(--primary);
  background: var(--card-bg);
  padding: 16px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 0 0 28px;
  color: var(--text);
  font-style: normal;
}
.article-content blockquote p {
  margin-bottom: 8px;
}
.article-content blockquote p:last-child {
  margin-bottom: 0;
}
.article-content table {
  width: 100%;
  margin-bottom: 28px;
  border-collapse: collapse;
}
.article-content th {
  background: var(--bg-panel);
  border: 1px solid var(--border-strong);
  padding: 12px 16px;
  color: var(--text);
  font-weight: 600;
}
.article-content td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  color: var(--text-soft);
}
.article-content ul,
.article-content ol {
  padding-left: 22px;
  margin-bottom: 26px;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content figure {
  margin: 28px 0;
}
.article-content figcaption {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 8px;
}
.article-content iframe {
  max-width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  margin: 24px 0;
}

/* ===== Tags ===== */
.article-tags {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.tag-label {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 600;
  margin-right: 4px;
}
.tag-chip {
  display: inline-block;
  padding: 5px 14px;
  border: 1px solid rgba(0,224,122,0.5);
  color: var(--primary);
  font-size: 13px;
  border-radius: 4px;
  background: var(--primary-dim);
  transition: box-shadow .3s ease, transform .3s ease;
}
.tag-chip:hover {
  box-shadow: 0 0 14px var(--shadow-primary);
  transform: translateY(-2px);
  color: var(--primary);
}

/* ===== Empty State ===== */
.empty-state {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 64px 24px;
  text-align: center;
  background: rgba(255,255,255,0.02);
}
.empty-icon {
  width: 72px;
  height: 72px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-dim);
  color: var(--primary);
  font-size: 28px;
  margin-bottom: 18px;
  box-shadow: 0 0 24px rgba(0,224,122,0.15);
}
.empty-state h2 {
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  font-size: 24px;
}
.empty-state p {
  color: var(--text-muted);
  margin-bottom: 24px;
  max-width: 360px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Related Section ===== */
.related-section {
  padding: 64px 0 72px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
}
.section-head h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}
.theme-stripe {
  display: inline-block;
  width: 6px;
  height: 24px;
  background: var(--primary);
  border-radius: 2px;
  box-shadow: 0 0 12px var(--shadow-primary);
}
.related-empty {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  background: rgba(255,255,255,0.02);
  text-align: center;
}
.related-empty h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}
.related-empty p {
  color: var(--text-muted);
  margin-bottom: 16px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  font-size: 14px;
}
.return-row {
  text-align: center;
  margin-top: 28px;
}

/* ===== CTA Band ===== */
.cta-band {
  background: linear-gradient(120deg, var(--primary), var(--cyan));
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -30px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  pointer-events: none;
}
.cta-band h2 {
  color: #04140C;
  font-weight: 800;
  font-size: 32px;
  margin: 0 0 8px;
}
.cta-band p {
  color: rgba(4,20,12,0.82);
  font-size: 15px;
  margin: 0;
  max-width: 560px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  position: relative;
  padding: 56px 0 0;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--cyan), transparent);
}
.footer-brand {
  font-size: 21px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.5px;
}
.footer-desc {
  color: var(--text-muted);
  margin: 14px 0 0;
  max-width: 320px;
  font-size: 14px;
  line-height: 1.8;
}
.footer-title {
  color: var(--text);
  font-weight: 700;
  margin-bottom: 16px;
  font-size: 16px;
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-bottom {
  padding: 18px 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  margin-top: 48px;
}
.footer-bottom p {
  font-size: 14px;
  margin: 0;
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: rgba(11, 16, 22, 0.98);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    margin-top: 8px;
  }
  .site-header .navbar-nav .nav-link {
    padding: 12px 16px;
  }
  .site-header .navbar-nav .nav-link::after {
    display: none;
  }
  .navbar .btn-pill {
    margin-top: 12px;
    display: inline-flex;
  }
  .article-hero {
    padding: 48px 0 42px;
  }
  .article-body-wrap {
    padding: 40px 0 48px;
  }
  .related-section {
    padding: 48px 0;
  }
  .cta-band {
    padding: 40px 0;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 767.98px) {
  .article-hero h1 {
    font-size: 28px;
  }
  .article-summary {
    font-size: 15px;
  }
  .article-content {
    font-size: 15.5px;
  }
  .article-content h2 {
    font-size: 22px;
  }
  .article-meta {
    gap: 8px;
  }
  .meta-divider {
    display: none;
  }
  .article-meta .meta-item {
    width: 100%;
  }
  .cta-band h2 {
    font-size: 24px;
  }
  .footer-bottom p {
    font-size: 13px;
  }
}
@media (max-width: 575.98px) {
  .breadcrumb-nav {
    font-size: 13px;
  }
  .breadcrumb-nav .crumb-current {
    max-width: 180px;
  }
  .article-content table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

/* roulang page: category3 */
:root {
  --primary: #00E07A;
  --primary-dim: rgba(0,224,122,.12);
  --accent: #FF4D2E;
  --accent-dim: rgba(255,77,46,.15);
  --cyan: #00E5FF;
  --bg-deep: #0B1016;
  --bg-card: #131A22;
  --bg-elevated: rgba(255,255,255,.04);
  --bg-hover: rgba(255,255,255,.08);
  --border: rgba(255,255,255,.08);
  --text-main: #E8EEF2;
  --text-muted: #9AA7B4;
  --text-dim: #5D6B78;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-btn: 6px;
  --glow-primary: 0 0 24px rgba(0,224,122,.15);
  --glow-cyan: 0 0 12px rgba(0,229,255,.25);
  --transition: .25s ease;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  background-image: repeating-linear-gradient(135deg, rgba(255,255,255,.015) 0, rgba(255,255,255,.015) 1px, transparent 1px, transparent 12px);
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button,
input {
  border: none;
  outline: none;
  font-family: inherit;
}
.container {
  max-width: 1320px;
  padding-left: 20px;
  padding-right: 20px;
}
.divider {
  height: 1px;
  background: linear-gradient(90deg, rgba(0,224,122,.6), rgba(0,229,255,.3), transparent);
  border: none;
}
.neon-line {
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--cyan), transparent);
  border: none;
}
/* ===== Header / Nav ===== */
.navbar {
  background: rgba(11,16,22,.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  min-height: 68px;
  padding: 0;
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--cyan), transparent) 1;
  z-index: 1030;
}
.navbar-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  padding: 8px 0;
}
.brand-en {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--cyan);
  font-weight: 600;
  text-transform: uppercase;
}
.brand-cn {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .5px;
}
.site-nav {
  gap: 4px;
}
.navbar .nav-link {
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-btn);
  position: relative;
  transition: color var(--transition), text-shadow var(--transition);
}
.navbar .nav-link:hover {
  color: var(--primary);
}
.navbar .nav-link.active {
  color: var(--primary);
  font-weight: 600;
  text-shadow: 0 0 12px rgba(0,224,122,.6);
}
.navbar .nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0,224,122,.7);
}
.btn-pill {
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 600;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  border: none;
}
.btn-pill:hover,
.btn-pill:focus {
  background: #ff6734;
  color: #fff;
  box-shadow: 0 0 18px rgba(255,77,46,.4);
  transform: translateY(-1px);
}
.navbar-toggler {
  border: none;
  color: var(--text-main);
  font-size: 1.4rem;
  padding: 4px 8px;
}
.navbar-toggler:focus {
  box-shadow: none;
}
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: var(--bg-deep);
    border-bottom: 2px solid rgba(0,224,122,.3);
    padding: 16px 12px;
    border-radius: 0 0 12px 12px;
  }
  .site-nav {
    gap: 2px;
    margin-bottom: 12px;
  }
  .navbar .nav-link {
    padding: 10px 12px;
  }
  .btn-pill {
    display: inline-block;
    margin-top: 4px;
  }
}
/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-image: linear-gradient(180deg, rgba(11,16,22,.55) 0%, rgba(11,16,22,.85) 100%), url("/assets/images/backpic/back-2.png");
  background-size: cover;
  background-position: center;
  padding: 80px 0 60px;
}
.page-banner .banner-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 4px;
  background: var(--primary-dim);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
  border: 1px solid rgba(0,224,122,.25);
}
.page-banner h1 {
  font-size: 42px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.page-banner h1 .highlight {
  color: var(--primary);
  text-shadow: 0 0 20px rgba(0,224,122,.5);
}
.page-banner .lead {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}
@media (max-width: 768px) {
  .page-banner {
    min-height: 260px;
    padding: 60px 0 44px;
  }
  .page-banner h1 {
    font-size: 28px;
  }
}
/* ===== Stat Bar ===== */
.stat-section {
  padding: 0 0 40px;
  margin-top: -32px;
  position: relative;
  z-index: 2;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.stat-card:hover {
  border-color: rgba(0,224,122,.3);
  box-shadow: var(--glow-primary);
}
.stat-card .num {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
}
.stat-card .label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}
/* ===== Feature Grid ===== */
.section-block {
  padding: 80px 0;
}
.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--cyan);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.section-title {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  line-height: 1.4;
}
.section-sub {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 720px;
  line-height: 1.8;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  height: 100%;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: .4;
  transition: opacity var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,224,122,.35);
  box-shadow: var(--glow-primary);
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
  margin-bottom: 18px;
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 0;
}
.feature-card .more-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.feature-card .more-link i {
  transition: transform var(--transition);
}
.feature-card .more-link:hover i {
  transform: translateX(4px);
}
/* ===== Alternating Blocks ===== */
.alternate-block {
  padding: 40px 0;
}
.alternate-row {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 80px;
}
.alternate-row:last-child {
  margin-bottom: 0;
}
.alternate-row .alt-img {
  flex: 0 0 46%;
}
.alternate-row .alt-img .img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}
.alternate-row .alt-img .img-wrap img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  transition: transform .5s ease;
}
.alternate-row .alt-img .img-wrap:hover img {
  transform: scale(1.03);
}
.alternate-row .alt-img .img-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(11,16,22,.75);
  border: 1px solid rgba(0,224,122,.4);
  color: var(--primary);
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 4px;
  letter-spacing: 1px;
}
.alternate-row .alt-content {
  flex: 1;
}
.alternate-row .alt-content .step-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.alternate-row .alt-content h3 {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.alternate-row .alt-content p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}
.alternate-row .alt-content ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.alternate-row .alt-content ul li {
  padding: 6px 0 6px 24px;
  position: relative;
  font-size: 14px;
  color: var(--text-muted);
}
.alternate-row .alt-content ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 15px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--primary);
  transform: rotate(45deg);
  box-shadow: 0 0 8px rgba(0,224,122,.5);
}
.alternate-row:nth-child(even) {
  flex-direction: row-reverse;
}
@media (max-width: 991.98px) {
  .alternate-row,
  .alternate-row:nth-child(even) {
    flex-direction: column;
    gap: 28px;
    margin-bottom: 56px;
  }
  .alternate-row .alt-img {
    flex: 0 0 100%;
    width: 100%;
  }
}
/* ===== Timeline ===== */
.timeline-section {
  background: var(--bg-deep);
  position: relative;
  padding: 80px 0;
}
.timeline-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent, rgba(0,224,122,.4), rgba(0,229,255,.3), transparent);
  transform: translateX(-50%);
}
.timeline-item {
  position: relative;
  padding: 24px 0;
  width: 50%;
}
.timeline-item:nth-child(odd) {
  padding-right: 56px;
  text-align: right;
}
.timeline-item:nth-child(even) {
  margin-left: 50%;
  padding-left: 56px;
}
.timeline-item .dot {
  position: absolute;
  top: 36px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(0,224,122,.6);
  border: 2px solid var(--bg-deep);
  z-index: 2;
}
.timeline-item:nth-child(odd) .dot {
  right: -6px;
}
.timeline-item:nth-child(even) .dot {
  left: -6px;
}
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.timeline-card:hover {
  border-color: rgba(0,224,122,.35);
  box-shadow: var(--glow-primary);
}
.timeline-card .time-label {
  font-size: 12px;
  color: var(--cyan);
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.timeline-card h4 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.timeline-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 0;
  line-height: 1.7;
}
@media (max-width: 767.98px) {
  .timeline-section::before {
    left: 12px;
  }
  .timeline-item,
  .timeline-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
    padding-left: 40px;
    padding-right: 0;
    text-align: left;
  }
  .timeline-item:nth-child(odd) .dot,
  .timeline-item:nth-child(even) .dot {
    left: 6px;
    right: auto;
  }
  .timeline-item:nth-child(odd) {
    padding-right: 0;
  }
}
/* ===== CTA Banner ===== */
.cta-banner {
  padding: 56px 0;
  background: linear-gradient(120deg, rgba(0,224,122,.95), rgba(0,229,255,.85));
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-banner::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
}
.cta-banner h3 {
  font-size: 28px;
  font-weight: 800;
  color: #0B1016;
  margin-bottom: 10px;
  position: relative;
  z-index: 2;
}
.cta-banner p {
  font-size: 15px;
  color: rgba(11,16,22,.75);
  margin-bottom: 22px;
  position: relative;
  z-index: 2;
}
.cta-banner .btn-dark {
  background: #0B1016;
  color: var(--primary);
  font-weight: 700;
  padding: 12px 32px;
  border-radius: 6px;
  font-size: 15px;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  z-index: 2;
}
.cta-banner .btn-dark:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
  color: var(--primary);
}
@media (max-width: 768px) {
  .cta-banner h3 {
    font-size: 22px;
  }
}
/* ===== FAQ ===== */
.faq-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
}
.faq-panel .btn-faq {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: none;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  padding: 0;
  text-align: left;
  gap: 16px;
}
.faq-panel .btn-faq .faq-num {
  color: var(--primary);
  font-size: 20px;
  font-weight: 800;
  margin-right: 14px;
  min-width: 30px;
}
.faq-panel .btn-faq .fa-chevron-down {
  margin-left: auto;
  font-size: 14px;
  color: var(--text-muted);
  transition: transform var(--transition);
}
.faq-panel .btn-faq[aria-expanded="true"] .fa-chevron-down {
  transform: rotate(180deg);
  color: var(--primary);
}
.faq-panel .btn-faq[aria-expanded="true"] .faq-title {
  color: var(--primary);
}
.faq-panel .faq-body {
  padding-top: 14px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
  border-top: 1px solid var(--border);
  margin-top: 14px;
}
/* ===== Footer ===== */
.site-footer {
  background: #080C10;
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--cyan), transparent) 1;
  padding: 56px 0 0;
}
.site-footer .footer-brand {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.site-footer .footer-desc {
  color: var(--text-muted);
  font-size: 14px;
  max-width: 320px;
  line-height: 1.8;
}
.site-footer .footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}
.site-footer .footer-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.site-footer .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer .footer-links li {
  margin-bottom: 10px;
}
.site-footer .footer-links a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color var(--transition), padding-left var(--transition);
}
.site-footer .footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.site-footer .footer-bottom {
  border-top: 1px solid rgba(255,255,255,.05);
  padding: 18px 0;
  margin-top: 40px;
  text-align: center;
}
.site-footer .footer-bottom p {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: .5px;
}
/* ===== Empty State (unused here but consistent) ===== */
.empty-state {
  border: 1px dashed rgba(0,224,122,.35);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
}
.empty-state i {
  font-size: 32px;
  color: var(--primary);
  margin-bottom: 12px;
  display: block;
}
/* ===== Focus accessibility ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
/* ===== Section spacing mobile ===== */
@media (max-width: 768px) {
  .section-block {
    padding: 56px 0;
  }
  .section-title {
    font-size: 24px;
  }
  .stat-card .num {
    font-size: 26px;
  }
  .alternate-row .alt-img .img-wrap img {
    height: 200px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #00E07A;
  --primary-dim: rgba(0, 224, 122, 0.12);
  --primary-glow: 0 0 24px rgba(0, 224, 122, 0.15);
  --secondary: #FF4D2E;
  --accent: #00E5FF;
  --bg-dark: #0B1016;
  --bg-card: #131A22;
  --bg-deep: #080C10;
  --text-light: #F0F5F2;
  --text-muted: #94A3A4;
  --border-line: rgba(255, 255, 255, 0.08);
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 4px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.75;
  letter-spacing: 0.2px;
  margin: 0;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(115deg, rgba(255,255,255,0.015) 0px, rgba(255,255,255,0.015) 1px, transparent 1px, transparent 12px);
  pointer-events: none;
  z-index: 0;
}
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: #4dffa3; }
img { max-width: 100%; height: auto; }
.container { max-width: 1320px; }
.h1, .h2, .h3, h1, h2, h3, h4 { font-weight: 800; letter-spacing: -0.3px; }

/* ============ Top Nav ============ */
.navbar {
  background: rgba(11, 16, 22, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  min-height: 68px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  position: sticky;
  top: 0;
  z-index: 1030;
  padding: 0;
}
.navbar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent), transparent);
}
.navbar-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 8px 0;
  line-height: 1.2;
}
.brand-en {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2.5px;
}
.brand-cn {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
}
.navbar-nav.site-nav {
  gap: 2px;
}
.navbar-nav .nav-item { position: relative; }
.navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  font-weight: 500;
  padding: 24px 16px;
  position: relative;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}
.navbar-nav .nav-link:hover {
  color: var(--primary);
}
.navbar-nav .nav-link.active {
  color: var(--primary);
  text-shadow: 0 0 12px rgba(0, 224, 122, 0.6);
}
.navbar-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 12px;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(0, 224, 122, 0.8);
  border-radius: 2px;
}
.btn-pill {
  background: var(--secondary);
  color: #fff !important;
  border: none;
  border-radius: 999px;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}
.btn-pill:hover {
  background: #ff6b4d;
  transform: translateY(-1px);
  box-shadow: 0 0 18px rgba(255, 77, 46, 0.35);
}
.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 20px;
  padding: 6px 12px;
  border-radius: 6px;
  background: transparent;
}
.navbar-toggler:focus { box-shadow: none; border-color: var(--primary); }
@media (max-width: 991px) {
  .navbar-collapse {
    background: var(--bg-dark);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 12px 16px 20px;
  }
  .navbar-nav .nav-link { padding: 12px 8px; border-left: 2px solid transparent; }
  .navbar-nav .nav-link.active { border-left-color: var(--primary); }
  .navbar-nav .nav-link.active::after { display: none; }
  .btn-pill { margin-top: 12px; width: 100%; justify-content: center; }
}

/* ============ Page Banner ============ */
.page-banner {
  position: relative;
  background: linear-gradient(180deg, rgba(8, 12, 16, 0.72), rgba(11, 16, 22, 0.94)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  padding: 84px 0 72px;
  border-bottom: 1px solid var(--border-line);
  overflow: hidden;
}
.page-banner .container { position: relative; z-index: 2; }
.breadcrumb-custom {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.breadcrumb-custom a { color: var(--text-muted); }
.breadcrumb-custom a:hover { color: var(--primary); }
.breadcrumb-custom .sep { margin: 0 8px; color: rgba(255,255,255,0.3); }
.page-banner h1 {
  font-size: 46px;
  line-height: 1.25;
  margin-bottom: 18px;
  color: #fff;
}
.page-banner h1 strong {
  color: var(--primary);
  text-shadow: 0 0 20px rgba(0, 224, 122, 0.35);
}
.banner-subtitle {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 720px;
  margin-bottom: 28px;
}
.banner-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.banner-tags span {
  background: rgba(0, 224, 122, 0.1);
  border: 1px solid rgba(0, 224, 122, 0.35);
  color: var(--primary);
  border-radius: var(--radius-sm);
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
@media (max-width: 768px) {
  .page-banner { padding: 56px 0 48px; }
  .page-banner h1 { font-size: 28px; }
  .banner-subtitle { font-size: 15px; }
}

/* ============ Data Strip ============ */
.data-strip {
  border-bottom: 1px solid var(--border-line);
  background: rgba(19, 26, 34, 0.5);
}
.data-strip .data-item {
  padding: 28px 20px;
  text-align: center;
  border-right: 1px solid var(--border-line);
}
.data-strip .data-item:last-child { border-right: none; }
.data-strip .data-num {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 14px rgba(0, 224, 122, 0.25);
  line-height: 1.2;
}
.data-strip .data-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}
@media (max-width: 767px) {
  .data-strip .data-item { border-right: none; border-bottom: 1px solid var(--border-line); }
  .data-strip .data-item:last-child { border-bottom: none; }
  .data-strip .data-num { font-size: 28px; }
}

/* ============ Section common ============ */
.section-block { padding: 88px 0; }
.section-block.alt-bg { background: rgba(19, 26, 34, 0.38); }
.section-head { margin-bottom: 44px; }
.section-head .sec-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-head h2 {
  font-size: 34px;
  color: #fff;
  margin-bottom: 10px;
}
.section-head p {
  color: var(--text-muted);
  max-width: 640px;
  font-size: 16px;
}
@media (max-width: 768px) {
  .section-block { padding: 56px 0; }
  .section-head h2 { font-size: 26px; }
}

/* ============ Category Entry Cards ============ */
.entry-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  height: 100%;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.entry-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.entry-card:hover {
  border-color: rgba(0, 224, 122, 0.45);
  box-shadow: 0 0 24px rgba(0, 224, 122, 0.12);
  transform: translateY(-3px);
}
.entry-card:hover::before { opacity: 1; }
.entry-icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--primary-dim);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}
.entry-card h3 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 6px;
}
.entry-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 0;
  line-height: 1.6;
}
.entry-link {
  margin-top: 14px;
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.entry-link i { transition: transform 0.2s ease; }
.entry-card:hover .entry-link i { transform: translateX(4px); }

/* ============ Timeline ============ */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent), transparent);
  border-radius: 2px;
}
.timeline-item {
  position: relative;
  margin-bottom: 36px;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -30px;
  top: 24px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 3px solid var(--primary);
  box-shadow: 0 0 12px rgba(0, 224, 122, 0.6);
}
.timeline-date {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.5px;
}
.timeline-date .date-tag {
  color: var(--accent);
  font-weight: 600;
  margin-left: 8px;
}
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.timeline-card:hover {
  border-color: rgba(0, 224, 122, 0.35);
  box-shadow: 0 0 22px rgba(0, 224, 122, 0.1);
}
.timeline-card .row { margin: 0; }
.timeline-card .col-md-4, .timeline-card .col-md-8 { padding: 0; }
.timeline-thumb {
  height: 100%;
  min-height: 150px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.timeline-thumb span {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.timeline-body { padding: 20px 24px; }
.badge-tag {
  display: inline-block;
  background: var(--primary-dim);
  color: var(--primary);
  border: 1px solid rgba(0, 224, 122, 0.35);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  margin-bottom: 8px;
}
.timeline-body h3 {
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.timeline-body p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 12px;
}
.btn-outline-sm {
  display: inline-block;
  border: 1px solid rgba(0, 224, 122, 0.5);
  color: var(--primary);
  border-radius: 6px;
  padding: 5px 16px;
  font-size: 14px;
  font-weight: 600;
  background: transparent;
  transition: all 0.25s ease;
}
.btn-outline-sm:hover {
  background: rgba(0, 224, 122, 0.12);
  color: #4dffa3;
  border-color: var(--primary);
}
@media (max-width: 767px) {
  .timeline { padding-left: 24px; }
  .timeline-dot { left: -24px; width: 12px; height: 12px; }
  .timeline-card .col-md-4 .timeline-thumb { min-height: 120px; }
  .timeline-body { padding: 16px 18px; }
}

/* ============ Swap cards ============ */
.swap-row { margin-bottom: 56px; }
.swap-row:last-child { margin-bottom: 0; }
.swap-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-line);
}
.swap-media img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.swap-media:hover img { transform: scale(1.03); }
.swap-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(8, 12, 16, 0.55));
  pointer-events: none;
}
.swap-content { padding: 24px 12px; }
.swap-content h3 {
  font-size: 24px;
  color: #fff;
  margin: 10px 0 12px;
}
.swap-content p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 16px;
}
.swap-list {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
}
.swap-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  color: #c5cfcb;
  font-size: 14px;
}
.swap-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0, 224, 122, 0.6);
}
.btn-primary-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: var(--bg-dark) !important;
  border: none;
  border-radius: 6px;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 700;
  transition: all 0.25s ease;
}
.btn-primary-sm:hover {
  background: #4dffa3;
  box-shadow: 0 0 20px rgba(0, 224, 122, 0.3);
  transform: translateY(-1px);
}
@media (max-width: 991px) {
  .swap-content { padding: 24px 0 0; }
  .swap-media img { height: 220px; }
}

/* ============ Steps ============ */
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  height: 100%;
  position: relative;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.step-card:hover {
  border-color: rgba(0, 224, 122, 0.35);
  box-shadow: 0 0 20px rgba(0, 224, 122, 0.08);
}
.step-num {
  font-size: 26px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--primary);
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
.step-card h3 {
  font-size: 17px;
  color: #fff;
  margin-bottom: 8px;
}
.step-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ============ CTA Banner ============ */
.cta-banner {
  background: linear-gradient(105deg, var(--primary) 0%, #35f0a0 45%, var(--accent) 100%);
  border-radius: var(--radius-lg);
  padding: 48px 52px;
  color: var(--bg-dark);
  position: relative;
  overflow: hidden;
}
.cta-banner::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}
.cta-banner h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--bg-dark);
}
.cta-banner p {
  font-size: 15px;
  opacity: 0.85;
  margin-bottom: 0;
  max-width: 480px;
}
.btn-dark-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-dark);
  color: var(--primary) !important;
  border: none;
  border-radius: 999px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 700;
  transition: all 0.25s ease;
}
.btn-dark-cta:hover {
  background: #131a22;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(8, 12, 16, 0.3);
}
@media (max-width: 767px) {
  .cta-banner { padding: 36px 24px; }
  .cta-banner h2 { font-size: 22px; }
  .btn-dark-cta { width: 100%; justify-content: center; margin-top: 16px; }
}

/* ============ FAQ Accordion ============ */
.accordion.custom-accordion .accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  overflow: hidden;
}
.accordion.custom-accordion .accordion-item:last-child { margin-bottom: 0; }
.accordion.custom-accordion .accordion-button {
  background: transparent;
  color: var(--text-light);
  font-size: 16px;
  font-weight: 600;
  padding: 20px 22px 20px 56px;
  position: relative;
  box-shadow: none;
  border: none;
}
.accordion.custom-accordion .accordion-button::before {
  content: attr(data-index);
  position: absolute;
  left: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 8px rgba(0, 224, 122, 0.4);
}
.accordion.custom-accordion .accordion-button:not(.collapsed) {
  background: rgba(0, 224, 122, 0.06);
  color: var(--primary);
}
.accordion.custom-accordion .accordion-button:focus {
  box-shadow: none;
  border-color: transparent;
}
.accordion.custom-accordion .accordion-button::after {
  background: none;
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  content: "\f078";
  color: var(--text-muted);
  transition: transform 0.3s ease, color 0.3s ease;
  margin-left: auto;
  width: 20px;
  height: 20px;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
}
.accordion.custom-accordion .accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
  color: var(--primary);
}
.accordion.custom-accordion .accordion-body {
  padding: 4px 24px 22px 56px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  border-top: 1px solid var(--border-line);
}

/* ============ Footer ============ */
.site-footer {
  background: var(--bg-deep);
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--accent), transparent) 1;
  padding: 60px 0 0;
  margin-top: 0;
}
.footer-brand {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.footer-brand::first-letter { color: var(--primary); }
.footer-desc {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  max-width: 320px;
}
.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}
.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 2px;
  background: var(--primary);
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  column-count: 2;
  column-gap: 20px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 20px 0;
  margin-top: 40px;
  text-align: center;
}
.footer-bottom p {
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
  margin: 0;
}
@media (max-width: 767px) {
  .footer-links { column-count: 1; }
  .site-footer { padding-top: 40px; }
}

/* ============ Back to top ============ */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid rgba(0, 224, 122, 0.4);
  color: var(--primary);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99;
  cursor: pointer;
  transition: all 0.25s ease;
  opacity: 0;
  visibility: hidden;
}
.back-top.show {
  opacity: 1;
  visibility: visible;
}
.back-top:hover {
  background: var(--primary);
  color: var(--bg-dark);
  box-shadow: 0 0 24px rgba(0, 224, 122, 0.4);
}

/* roulang page: category4 */
:root {
  --primary: #00E07A;
  --primary-dim: rgba(0,224,122,0.12);
  --accent: #FF4D2E;
  --accent-dim: rgba(255,77,46,0.10);
  --cyan: #00E5FF;
  --bg-main: #0B1016;
  --bg-card: #131A22;
  --bg-deep: #080C10;
  --text: #E8EDF2;
  --text-muted: #8A9BAD;
  --border: rgba(255,255,255,0.06);
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --radius-xs: 4px;
  --shadow-glow: 0 0 24px rgba(0,224,122,0.15);
  --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --header-h: 68px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-main);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color .25s; }
img { max-width: 100%; height: auto; }
button, input, select, textarea { font-family: inherit; }
.container { max-width: 1320px; }
/* ---------- 顶部导航 ---------- */
.navbar {
  background: rgba(11,16,22,0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  min-height: var(--header-h);
  padding: 0 0;
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, #00E07A, #00E5FF, transparent) 1;
  position: sticky;
  top: 0;
  z-index: 1050;
}
.navbar .container { min-height: var(--header-h); }
.navbar-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  padding: 8px 0;
}
.brand-en {
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--primary);
  text-transform: uppercase;
  font-weight: 700;
  opacity: .85;
}
.brand-cn {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: .5px;
}
.site-nav { gap: 2px; }
.site-nav .nav-link {
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  position: relative;
  transition: color .25s, text-shadow .25s;
  white-space: nowrap;
}
.site-nav .nav-link:hover {
  color: var(--primary);
  text-shadow: 0 0 12px rgba(0,224,122,0.6);
}
.site-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
  text-shadow: 0 0 12px rgba(0,224,122,0.55);
}
.site-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0,224,122,0.7);
}
.btn-pill {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  transition: background .25s, box-shadow .25s, transform .2s;
}
.btn-pill:hover {
  background: #ff5a3a;
  color: #fff;
  box-shadow: 0 0 18px rgba(255,77,46,.35);
  transform: translateY(-2px);
}
.navbar-toggler {
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: transparent;
}
.navbar-toggler:hover, .navbar-toggler:focus {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 10px rgba(0,224,122,.2);
}
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: rgba(11,16,22,0.98);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-top: 12px;
    padding: 16px 12px;
  }
  .site-nav { gap: 4px; }
  .site-nav .nav-link { padding: 10px 8px; }
  .btn-pill { margin-top: 10px; width: 100%; justify-content: center; }
}
/* ---------- 页面 Hero Banner ---------- */
.category-banner {
  position: relative;
  min-height: 340px;
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  overflow: hidden;
}
.category-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center 40%;
  opacity: .35;
}
.category-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,16,22,0.55) 0%, var(--bg-main) 100%);
}
.category-banner .container { position: relative; z-index: 3; }
.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,224,122,0.12);
  border: 1px solid rgba(0,224,122,0.35);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .5px;
  margin-bottom: 18px;
}
.banner-badge .live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(255,77,46,.5);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(255,77,46,.5); }
  70% { box-shadow: 0 0 0 10px rgba(255,77,46,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,77,46,0); }
}
.category-banner h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.category-banner h1 .highlight {
  color: var(--primary);
  text-shadow: 0 0 18px rgba(0,224,122,.4);
}
.category-banner .banner-sub {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.7;
}
.banner-meta {
  display: flex;
  gap: 24px;
  margin-top: 26px;
  flex-wrap: wrap;
}
.banner-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 14px;
}
.banner-meta .meta-item i {
  color: var(--cyan);
  font-size: 16px;
}
@media (max-width: 768px) {
  .category-banner { min-height: 300px; }
  .category-banner h1 { font-size: 28px; }
  .category-banner .banner-sub { font-size: 16px; }
  .banner-meta { gap: 14px; }
}
/* ---------- 通用板块样式 ---------- */
.section-block { padding: 80px 0; }
.section-block.tight { padding: 60px 0; }
.section-title-wrap { margin-bottom: 48px; }
.section-title-wrap .section-tag {
  display: inline-block;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-title-wrap h2 {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 10px;
}
.section-title-wrap .section-desc {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 560px;
}
@media (max-width: 768px) {
  .section-block { padding: 56px 0; }
  .section-title-wrap h2 { font-size: 26px; }
}
/* ---------- 数据条 ---------- */
.stats-strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: rgba(19,26,34,0.6);
  padding: 40px 0;
}
.stats-strip .stat-item { text-align: center; position: relative; }
.stats-strip .stat-item + .stat-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 56px;
  width: 1px;
  background: var(--border);
}
.stat-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  text-shadow: 0 0 18px rgba(0,224,122,.3);
}
.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
  letter-spacing: .5px;
}
@media (max-width: 768px) {
  .stats-strip { padding: 28px 0; }
  .stat-num { font-size: 28px; }
  .stats-strip .stat-item + .stat-item::before { display: none; }
  .stats-strip .row > div { margin-bottom: 18px; }
}
/* ---------- 时间线 ---------- */
.timeline-wrap { position: relative; padding-left: 0; }
.timeline-wrap::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, transparent, rgba(0,224,122,0.4) 10%, rgba(0,224,122,0.25) 90%, transparent);
}
.timeline-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 48px;
  position: relative;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-date-col {
  width: 50%;
  text-align: right;
  padding-right: 44px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}
.timeline-content-col { width: 50%; padding-left: 44px; }
.timeline-node {
  position: absolute;
  left: 50%;
  top: 24px;
  width: 16px;
  height: 16px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--bg-main);
  border: 3px solid var(--primary);
  box-shadow: 0 0 14px rgba(0,224,122,0.5);
  z-index: 2;
}
.timeline-date {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  background: var(--primary-dim);
  padding: 4px 14px;
  border-radius: 50px;
  display: inline-block;
  margin-bottom: 8px;
}
.timeline-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text);
}
.timeline-desc { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color .3s, box-shadow .3s;
}
.timeline-card:hover {
  border-color: rgba(0,224,122,0.35);
  box-shadow: var(--shadow-glow);
}
.timeline-card .card-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--cyan);
  background: rgba(0,229,255,0.08);
  border: 1px solid rgba(0,229,255,0.25);
  padding: 2px 10px;
  border-radius: var(--radius-xs);
  margin-bottom: 10px;
  font-weight: 600;
}
.timeline-card p { margin-bottom: 0; }
@media (max-width: 768px) {
  .timeline-wrap::before { left: 20px; }
  .timeline-item { flex-direction: column; padding-left: 48px; margin-bottom: 40px; }
  .timeline-date-col { width: 100%; text-align: left; padding-right: 0; align-items: flex-start; margin-bottom: 6px; }
  .timeline-content-col { width: 100%; padding-left: 0; }
  .timeline-node { left: 20px; top: 8px; transform: translateX(-50%); }
  .timeline-date { margin-bottom: 6px; }
}
/* ---------- 双列特写卡（2×2） ---------- */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  height: 100%;
  transition: border-color .3s, box-shadow .3s, transform .3s;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--cyan), transparent);
  opacity: 0;
  transition: opacity .3s;
}
.feature-card:hover {
  border-color: rgba(0,224,122,0.3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-dim);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 0;
  line-height: 1.7;
}
/* ---------- 左右交替卡片 ---------- */
.alt-row {
  display: flex;
  align-items: center;
  gap: 36px;
  margin-bottom: 64px;
}
.alt-row:last-child { margin-bottom: 0; }
.alt-media {
  flex: 1 1 48%;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  min-height: 240px;
  background-size: cover;
  background-position: center;
  transition: transform .5s;
}
.alt-media:hover { transform: scale(1.02); }
.alt-media .media-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(11,16,22,0.75));
}
.alt-media .alt-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(11,16,22,0.8);
  border: 1px solid rgba(0,224,122,0.4);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  z-index: 2;
}
.alt-body { flex: 1 1 52%; }
.alt-body h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.35;
}
.alt-body p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 14px;
}
.alt-body .alt-meta {
  display: flex;
  gap: 16px;
  color: var(--text-muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  margin-bottom: 18px;
}
.alt-body .alt-meta i { color: var(--cyan); margin-right: 4px; }
.btn-outline-green {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid rgba(0,224,122,0.45);
  color: var(--primary);
  border-radius: 50px;
  padding: 8px 22px;
  font-size: 14px;
  font-weight: 600;
  transition: background .25s, color .25s, box-shadow .25s, transform .2s;
}
.btn-outline-green:hover {
  background: var(--primary-dim);
  color: var(--primary);
  box-shadow: 0 0 16px rgba(0,224,122,.2);
  transform: translateY(-2px);
}
.alt-row:nth-child(even) { flex-direction: row-reverse; }
@media (max-width: 768px) {
  .alt-row, .alt-row:nth-child(even) { flex-direction: column; gap: 20px; margin-bottom: 48px; }
  .alt-media { width: 100%; min-height: 200px; }
  .alt-body h3 { font-size: 20px; }
}
/* ---------- CTA 横幅 ---------- */
.cta-banner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(120deg, #00E07A 0%, #00b86a 40%, #00E5FF 120%);
  padding: 56px 48px;
  color: #0B1016;
  text-align: center;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(135deg, rgba(255,255,255,0.08) 0 2px, transparent 2px 12px);
  pointer-events: none;
}
.cta-banner h3 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 10px;
  position: relative;
  z-index: 2;
}
.cta-banner p {
  font-size: 16px;
  color: rgba(11,16,22,0.75);
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
}
.btn-dark-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #0B1016;
  color: #00E07A;
  border: none;
  border-radius: 50px;
  padding: 12px 32px;
  font-size: 15px;
  font-weight: 700;
  position: relative;
  z-index: 2;
  transition: box-shadow .25s, transform .2s;
}
.btn-dark-pill:hover {
  color: #0B1016;
  background: #fff;
  box-shadow: 0 0 24px rgba(255,255,255,0.35);
  transform: translateY(-2px);
}
@media (max-width: 768px) {
  .cta-banner { padding: 36px 22px; }
  .cta-banner h3 { font-size: 22px; }
}
/* ---------- FAQ ---------- */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .3s;
}
.faq-card:hover { border-color: rgba(0,224,122,0.2); }
.faq-card .faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  user-select: none;
}
.faq-card .faq-num {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 6px;
  background: var(--primary-dim);
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.faq-card .faq-icon {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 14px;
  transition: transform .3s, color .3s;
}
.faq-card.open .faq-icon { transform: rotate(180deg); color: var(--primary); }
.faq-card.open { border-color: rgba(0,224,122,0.35); }
.faq-card.open .faq-q { color: var(--primary); }
.faq-card .faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-card .faq-a-inner {
  padding: 0 22px 18px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
}
/* ---------- 页脚 ---------- */
.site-footer {
  background: #080C10;
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, #00E07A, #00E5FF, transparent) 1;
  padding: 56px 0 0;
  color: var(--text-muted);
}
.footer-brand {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px;
}
.footer-desc { font-size: 14px; line-height: 1.7; max-width: 320px; }
.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}
.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color .25s, padding-left .25s;
}
.footer-links a:hover { color: var(--primary); padding-left: 6px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  margin-top: 40px;
  text-align: center;
  font-size: 13px;
  color: #5A6B7A;
}
/* ---------- 通用按钮/分隔 ---------- */
.divider-neon {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,224,122,0.3), rgba(0,229,255,0.2), transparent);
  border: none;
  margin: 0;
}
.bg-tint { background: rgba(19,26,34,0.5); }
/* ---------- 响应式微调 ---------- */
@media (max-width: 576px) {
  .section-title-wrap h2 { font-size: 23px; }
  .feature-card { padding: 20px 18px; }
  .footer-brand { font-size: 18px; }
}

/* roulang page: category5 */
:root {
            --primary: #00E07A;
            --primary-dim: rgba(0, 224, 122, 0.1);
            --secondary: #FF4D2E;
            --accent: #00E5FF;
            --bg-dark: #0B1016;
            --bg-panel: #131A22;
            --bg-deep: #080C10;
            --text-main: #F0F5F2;
            --text-muted: #9AA7A0;
            --border-dark: rgba(255, 255, 255, 0.06);
            --border-light: rgba(255, 255, 255, 0.12);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 4px;
            --shadow-primary: 0 0 24px rgba(0, 224, 122, 0.15);
            --shadow-text: 0 0 12px rgba(0, 224, 122, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg-dark);
            color: var(--text-main);
            font-family: var(--font-sans);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: #fff;
        }
        img {
            max-width: 100%;
        }
        .container {
            max-width: 1320px;
        }
        .section-head {
            margin-bottom: 44px;
        }
        .section-head .sub {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 2px;
            color: var(--primary);
            text-transform: uppercase;
            border: 1px solid rgba(0, 224, 122, .35);
            border-radius: var(--radius-sm);
            padding: 4px 14px;
            margin-bottom: 12px;
            background: var(--primary-dim);
        }
        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 0;
        }
        .btn {
            border-radius: var(--radius-pill);
            padding: 12px 28px;
            font-weight: 600;
            transition: all .25s ease;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #0B1016;
        }
        .btn-primary:hover {
            background: #00f090;
            border-color: #00f090;
            color: #0B1016;
            box-shadow: 0 0 20px rgba(0, 224, 122, .35);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, .3);
            color: #fff;
        }
        .btn-outline:hover {
            background: var(--primary-dim);
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-pill {
            background: var(--secondary);
            border: none;
            color: #fff;
            border-radius: 50px;
            padding: 9px 22px;
            font-size: 14px;
            font-weight: 600;
        }
        .btn-pill:hover {
            background: #ff6347;
            color: #fff;
            box-shadow: 0 0 16px rgba(255, 77, 46, .4);
            transform: translateY(-1px);
        }
        .badge-tag {
            display: inline-block;
            border: 1px solid rgba(0, 224, 122, .4);
            color: var(--primary);
            background: var(--primary-dim);
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 500;
        }
        .section-split {
            border-bottom: 1px solid var(--border-dark);
        }

        /* ---------- Navbar ---------- */
        .navbar {
            background: rgba(11, 16, 22, .92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            min-height: 68px;
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--primary), var(--accent), transparent) 1;
            padding: 0;
            z-index: 1000;
        }
        .navbar-brand {
            display: flex;
            flex-direction: column;
            padding: 8px 0;
            line-height: 1.2;
        }
        .brand-en {
            font-size: 11px;
            letter-spacing: 3px;
            color: var(--primary);
            text-transform: uppercase;
        }
        .brand-cn {
            font-size: 19px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
        }
        .site-nav .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            padding: 0 14px;
            line-height: 66px;
            font-size: 15px;
            border-bottom: 2px solid transparent;
            transition: color .25s ease, border-color .25s ease, text-shadow .25s ease;
        }
        .site-nav .nav-link:hover {
            color: var(--primary);
        }
        .site-nav .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            text-shadow: 0 0 14px rgba(0, 224, 122, .6);
        }
        .navbar .btn-pill {
            margin-left: 8px;
        }
        .navbar-toggler {
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 6px;
            padding: 6px 12px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 224, 122, .2);
        }

        /* ---------- Page Banner ---------- */
        .page-banner {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            background: linear-gradient(rgba(11, 16, 22, .78), rgba(11, 16, 22, .88)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border-dark);
            padding: 80px 0 64px;
            overflow: hidden;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), transparent);
        }
        .page-banner .badge-tag {
            margin-bottom: 14px;
        }
        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
        }
        .page-banner h1 .highlight {
            color: var(--primary);
        }
        .page-banner .lead {
            color: var(--text-muted);
            font-size: 17px;
            max-width: 620px;
            margin-bottom: 28px;
        }
        .page-banner .btn+.btn {
            margin-left: 12px;
        }

        /* ---------- Stats Bar ---------- */
        .stats-bar {
            background: var(--bg-panel);
            border-bottom: 1px solid var(--border-dark);
            padding: 40px 0;
        }
        .stats-bar .stat-item {
            text-align: center;
            padding: 16px 24px;
            border-right: 1px solid var(--border-dark);
        }
        .stats-bar .stat-item:last-child {
            border-right: none;
        }
        .stats-bar .stat-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            text-shadow: 0 0 18px rgba(0, 224, 122, .3);
            line-height: 1.2;
        }
        .stats-bar .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
        }
        .stats-bar .stat-item:nth-child(2) .stat-num {
            color: var(--accent);
            text-shadow: 0 0 18px rgba(0, 229, 255, .3);
        }

        /* ---------- Guide Details (Alternating) ---------- */
        .guide-details {
            padding: 90px 0 40px;
            background: var(--bg-dark);
        }
        .guide-block {
            padding: 50px 0;
        }
        .guide-block+.guide-block {
            border-top: 1px solid var(--border-dark);
        }
        .guide-block .guide-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, .06), 0 20px 40px rgba(0, 0, 0, .5);
        }
        .guide-block .guide-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform .5s ease;
            display: block;
        }
        .guide-block .guide-media:hover img {
            transform: scale(1.03);
        }
        .guide-block .guide-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 16, 22, .5));
            pointer-events: none;
        }
        .guide-block .guide-content {
            padding: 20px 0;
        }
        .guide-block .guide-content h3 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .guide-block .guide-content>p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .guide-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .guide-list li {
            position: relative;
            padding: 14px 0 14px 22px;
            border-left: 2px solid var(--primary);
            padding-left: 22px;
            margin-bottom: 8px;
            color: var(--text-main);
            line-height: 1.6;
        }
        .guide-list li strong {
            color: var(--primary);
            font-weight: 600;
            display: block;
            font-size: 15px;
        }
        .guide-list li span {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* ---------- Step Timeline ---------- */
        .guide-steps {
            padding: 90px 0;
            background: var(--bg-panel);
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
            position: relative;
        }
        .guide-steps::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 680px;
            max-width: 90%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
        }
        .step-timeline {
            position: relative;
            max-width: 820px;
            margin: 0 auto;
            padding: 20px 0;
        }
        .step-timeline::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            opacity: .5;
        }
        .step-item {
            position: relative;
            padding-left: 72px;
            padding-bottom: 40px;
        }
        .step-item:last-child {
            padding-bottom: 0;
        }
        .step-num {
            position: absolute;
            left: 0;
            top: 0;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--bg-dark);
            border: 2px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            color: var(--primary);
            box-shadow: 0 0 18px rgba(0, 224, 122, .25);
            font-variant-numeric: tabular-nums;
        }
        .step-item h4 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 0;
        }

        /* ---------- Device Grid ---------- */
        .guide-devices {
            padding: 90px 0;
            background: var(--bg-dark);
        }
        .device-card {
            background: rgba(255, 255, 255, .04);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            height: 100%;
            transition: all .3s ease;
        }
        .device-card:hover {
            background: rgba(255, 255, 255, .08);
            border-color: var(--primary);
            box-shadow: 0 0 24px rgba(0, 224, 122, .15);
            transform: translateY(-4px);
        }
        .device-card .device-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: var(--primary-dim);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .device-card h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .device-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 12px;
        }
        .device-card .device-note {
            font-size: 13px;
            color: var(--accent);
            font-weight: 500;
        }

        /* ---------- FAQ ---------- */
        .guide-faq {
            padding: 90px 0;
            background: var(--bg-panel);
            border-top: 1px solid var(--border-dark);
        }
        .accordion {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--bg-dark);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
        }
        .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 22px;
            border: none;
            font-family: var(--font-sans);
        }
        .accordion-button::after {
            filter: brightness(0) invert(1);
            opacity: .6;
        }
        .accordion-button:not(.collapsed) {
            background: var(--primary-dim);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-button:not(.collapsed)::after {
            filter: none;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 224, 122, .2);
        }
        .accordion-body {
            color: var(--text-muted);
            font-size: 15px;
            padding: 0 22px 20px;
            line-height: 1.8;
        }
        .accordion-item .faq-index {
            color: var(--primary);
            font-weight: 800;
            margin-right: 12px;
            font-variant-numeric: tabular-nums;
            text-shadow: 0 0 10px rgba(0, 224, 122, .5);
        }

        /* ---------- CTA ---------- */
        .guide-cta {
            padding: 80px 0;
            background: var(--bg-dark);
        }
        .cta-box {
            background: linear-gradient(115deg, var(--primary), var(--accent));
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
            color: #0B1016;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .15);
        }
        .cta-box h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .cta-box p {
            font-size: 16px;
            opacity: .85;
            margin-bottom: 24px;
            max-width: 480px;
        }
        .cta-box .btn-dark {
            background: #0B1016;
            color: var(--primary);
            border: none;
            font-weight: 700;
            padding: 12px 32px;
        }
        .cta-box .btn-dark:hover {
            background: #131A22;
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .25);
            transform: translateY(-2px);
        }
        .cta-box .btn-outline-dark {
            background: transparent;
            border: 1px solid rgba(11, 16, 22, .4);
            color: #0B1016;
            margin-left: 12px;
        }
        .cta-box .btn-outline-dark:hover {
            background: rgba(11, 16, 22, .1);
            color: #0B1016;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--bg-deep);
            border-top: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--primary), var(--accent), transparent) 1;
            padding: 56px 0 0;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 14px;
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 14px;
            transition: color .25s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-dark);
            padding: 18px 0;
            margin-top: 40px;
            text-align: center;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 13px;
            margin: 0;
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 991px) {
            .navbar .site-nav {
                padding: 12px 0;
            }
            .site-nav .nav-link {
                line-height: 46px;
                border-bottom: none;
                border-left: 2px solid transparent;
                padding: 0 16px;
                display: block;
            }
            .site-nav .nav-link.active {
                border-left-color: var(--primary);
                border-bottom: none;
            }
            .navbar .btn-pill {
                margin: 0 16px 16px;
            }
            .navbar-collapse {
                background: var(--bg-panel);
                border-top: 1px solid var(--border-dark);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                padding: 10px 0;
            }
            .page-banner {
                min-height: 320px;
                padding: 60px 0 50px;
            }
            .page-banner h1 {
                font-size: 32px;
            }
            .stats-bar .stat-item {
                border-right: none;
                border-bottom: 1px solid var(--border-dark);
                padding: 16px;
            }
            .stats-bar .stat-item:last-child {
                border-bottom: none;
            }
            .guide-block {
                padding: 36px 0;
            }
            .guide-block .guide-media img {
                height: 240px;
            }
            .cta-box {
                padding: 40px 28px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .page-banner h1 {
                font-size: 27px;
            }
            .page-banner .lead {
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 25px;
            }
            .stats-bar .stat-num {
                font-size: 32px;
            }
            .step-timeline::before {
                left: 19px;
            }
            .step-item {
                padding-left: 58px;
                padding-bottom: 32px;
            }
            .step-num {
                width: 40px;
                height: 40px;
                font-size: 15px;
            }
            .guide-block .guide-media img {
                height: 200px;
            }
            .cta-box h2 {
                font-size: 23px;
            }
            .cta-box .btn {
                display: block;
                width: 100%;
                margin-bottom: 10px;
            }
            .cta-box .btn-outline-dark {
                margin-left: 0;
            }
            .page-banner .btn {
                display: block;
                width: 100%;
                margin-bottom: 12px;
            }
            .page-banner .btn+.btn {
                margin-left: 0;
            }
            .guide-devices .device-card {
                margin-bottom: 16px;
            }
        }
        @media (max-width: 520px) {
            .page-banner {
                padding: 48px 0 40px;
            }
            .brand-cn {
                font-size: 16px;
            }
            .brand-en {
                font-size: 10px;
            }
            .guide-steps,
            .guide-details,
            .guide-devices,
            .guide-faq,
            .guide-cta {
                padding: 56px 0;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                transition: none !important;
                animation: none !important;
            }
        }
        ::selection {
            background: rgba(0, 224, 122, .3);
            color: #fff;
        }
        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }