/* roulang page: index */
:root {
  --bg-dark: #0B0F0D;
  --bg-card: #131A17;
  --bg-card-hover: #18211D;
  --accent: #C6F24E;
  --accent-hover: #D6FF6E;
  --accent-dark: #0B0F0D;
  --signal: #FF6B2C;
  --text-primary: #D1D5DB;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --border: #1F2A26;
  --border-light: rgba(255,255,255,0.08);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 8px 24px rgba(0,0,0,0.35);
  --font-mono: 'JetBrains Mono', 'Roboto Mono', Consolas, monospace;
  --font-sans: -apple-system, 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', sans-serif;
  --transition: all 0.18s ease;
  --section-space: 110px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }
input, select, textarea { font-family: inherit; font-size: 14px; color: #fff; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
section { padding: var(--section-space) 0; position: relative; }
.section-head { text-align: center; margin-bottom: 64px; }
.section-num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--accent);
  text-transform: uppercase;
}
.section-head h2 {
  font-size: 34px;
  color: #fff;
  margin-top: 10px;
  letter-spacing: 1px;
}
.section-head p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: 12px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(11,15,13,0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(11,15,13,0.92);
  border-bottom-color: var(--border);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.6px;
  display: flex;
  align-items: center;
  gap: 2px;
  white-space: nowrap;
}
.logo .logo-accent { color: var(--accent); }
.logo-dot {
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  margin-left: 2px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 2px;
  position: relative;
  letter-spacing: 0.3px;
}
.nav-link:hover { color: var(--accent); }
.nav-link.active { color: #fff; }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-cta-wrap { display: flex; align-items: center; gap: 16px; }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}
.nav-toggle span {
  width: 18px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 36px;
  transition: var(--transition);
  line-height: 1.4;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-dark);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(198,242,78,0.18);
}
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.2);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 0;
}
.btn-link:hover { color: var(--accent); gap: 10px; }
.btn-sm { padding: 8px 22px; font-size: 13px; }
.btn-large { padding: 16px 48px; font-size: 16px; width: 100%; }

/* ---------- Hero ---------- */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 140px 0 100px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.38;
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 78%, rgba(198,242,78,0.1), transparent 60%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 780px;
}
.hero-overline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--accent);
  border: 1px solid rgba(198,242,78,0.28);
  background: rgba(198,242,78,0.06);
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 28px;
}
.hero-overline::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
}
.hero h1 {
  font-size: 58px;
  font-weight: 800;
  line-height: 1.22;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.hero h1 .accent-text { color: var(--accent); }
.hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.9;
}
.hero-meta {
  display: flex;
  justify-content: center;
  gap: 36px;
  margin-bottom: 44px;
}
.meta-item {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.5px;
}
.meta-item svg { width: 15px; height: 15px; fill: var(--accent); }
.hero-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
}
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 2px;
  z-index: 2;
}
.hero-scroll::after {
  content: '';
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollHint 2s ease infinite;
}
@keyframes scrollHint {
  0%, 100% { transform: scaleY(0.6); opacity: 0.4; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* ---------- Agenda Timeline ---------- */
.agenda { background: var(--bg-dark); border-top: 1px solid var(--border); }
.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 80px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent) 0%, var(--border) 30%, var(--border) 70%, var(--accent) 100%);
  opacity: 0.6;
}
.timeline-item {
  position: relative;
  margin-bottom: 36px;
}
.timeline-time {
  position: absolute;
  left: -80px;
  width: 70px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  padding-top: 6px;
  line-height: 1.4;
}
.timeline-time small {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-sans);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -51px;
  top: 16px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(198,242,78,0.15);
}
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  transition: var(--transition);
}
.timeline-card:hover {
  border-color: rgba(198,242,78,0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}
.timeline-card h3 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 6px;
  font-weight: 600;
}
.timeline-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.timeline-card .venue {
  display: inline-block;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 8px;
  font-family: var(--font-mono);
}
.timeline-card .venue::before {
  content: '📍 ';
  font-size: 11px;
}

/* ---------- Highlights / Guests ---------- */
.highlights { border-top: 1px solid var(--border); }
.guest-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 0.85fr;
  gap: 24px;
  margin-bottom: 72px;
}
.guest-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.guest-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
  opacity: 0;
  transition: var(--transition);
}
.guest-card:hover {
  border-color: rgba(198,242,78,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  background: var(--bg-card-hover);
}
.guest-card:hover::before { opacity: 1; }
.guest-card.large { padding: 44px 32px; }
.guest-card.vertical {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
}
.guest-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  margin: 0 auto 18px;
  background: var(--bg-dark) center/cover no-repeat;
  border: 2px solid var(--accent);
  object-fit: cover;
}
.guest-card.vertical .guest-avatar {
  width: 128px;
  height: 128px;
}
.guest-card h3 {
  font-size: 20px;
  color: #fff;
  font-weight: 700;
}
.guest-card p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}
.guest-social {
  display: flex;
  gap: 12px;
  margin-top: 14px;
  justify-content: center;
}
.guest-social a {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--text-secondary);
}
.guest-social a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.point-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 56px;
}
.point-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.point-item .point-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 1px;
  flex-shrink: 0;
}
.point-item h4 {
  font-size: 16px;
  color: #fff;
  font-weight: 600;
  margin-bottom: 2px;
}
.point-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.highlight-bar {
  margin-top: 72px;
  background: var(--accent);
  border-radius: var(--radius-lg);
  padding: 32px 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.highlight-bar .stat {
  text-align: center;
  color: var(--accent-dark);
}
.highlight-bar .stat span {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 800;
  display: block;
  line-height: 1.2;
}
.highlight-bar .stat small {
  font-size: 13px;
  font-weight: 600;
  opacity: 0.75;
}

/* ---------- Tickets ---------- */
.tickets { border-top: 1px solid var(--border); }
.ticket-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr 1fr;
  gap: 24px;
  align-items: center;
}
.ticket-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}
.ticket-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.14);
  box-shadow: var(--shadow-card);
}
.ticket-card.featured {
  border-color: var(--accent);
  transform: scale(1.04);
  box-shadow: 0 0 0 1px rgba(198,242,78,0.12), var(--shadow-card);
  background: var(--bg-card-hover);
  z-index: 1;
}
.ticket-card.featured:hover { transform: scale(1.04) translateY(-4px); }
.ticket-badge {
  position: absolute;
  top: -11px;
  right: 28px;
  background: var(--signal);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 4px 16px;
  border-radius: 999px;
  text-transform: uppercase;
}
.ticket-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 1px;
}
.ticket-price {
  font-family: var(--font-mono);
  font-size: 52px;
  font-weight: 800;
  color: #fff;
  margin: 16px 0 8px;
  line-height: 1.1;
}
.ticket-price small {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-muted);
  font-family: var(--font-sans);
}
.ticket-discount {
  font-size: 12px;
  color: var(--signal);
  font-weight: 600;
  margin-bottom: 20px;
}
.ticket-card ul {
  flex: 1;
  margin-bottom: 28px;
}
.ticket-card li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 1px dashed var(--border);
  position: relative;
  padding-left: 26px;
  line-height: 1.6;
}
.ticket-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
}
.ticket-card .btn { width: 100%; }

/* ---------- Register CTA ---------- */
.register {
  background: #070A09;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.register::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  z-index: 0;
}
.register .container { position: relative; z-index: 1; max-width: 680px; text-align: center; }
.countdown { margin-bottom: 36px; }
.countdown-label {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.countdown-grid {
  display: flex;
  justify-content: center;
  gap: 16px;
}
.countdown-item {
  text-align: center;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  min-width: 84px;
  border: 1px solid var(--border);
}
.countdown-item.highlight {
  border-color: rgba(255,107,44,0.4);
}
.countdown-item span {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  color: var(--accent);
  display: block;
  line-height: 1.2;
  min-height: 40px;
}
.countdown-item.highlight span { color: var(--signal); }
.countdown-item small {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.register h2 {
  font-size: 30px;
  color: #fff;
  margin-bottom: 40px;
}
.register-form {
  text-align: left;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin: 0 auto;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group.full { grid-column: span 2; }
.form-group label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}
.form-group input,
.form-group select {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  transition: var(--transition);
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
}
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%239CA3AF' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(198,242,78,0.1);
}
.form-group input::placeholder {
  color: var(--text-muted);
}
.form-group input.error {
  border-color: var(--signal);
  box-shadow: 0 0 0 4px rgba(255,107,44,0.08);
}
.form-error {
  font-size: 12px;
  color: var(--signal);
  display: none;
}
.form-error.visible { display: block; }
.register-form .btn { grid-column: span 2; margin-top: 8px; }
.form-success {
  grid-column: span 2;
  background: rgba(198,242,78,0.08);
  border: 1px solid rgba(198,242,78,0.3);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 14px;
  color: var(--accent);
  text-align: center;
  display: none;
}
.form-success.visible { display: block; }

/* ---------- News ---------- */
.news { border-top: 1px solid var(--border); }
.news-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 28px;
  align-items: stretch;
}
.news-featured {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-featured:hover {
  border-color: rgba(198,242,78,0.3);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
  background: var(--bg-card-hover);
}
.news-thumb {
  aspect-ratio: 16/9;
  background: var(--bg-dark);
  overflow: hidden;
  position: relative;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.news-featured:hover .news-thumb img { transform: scale(1.03); }
.news-thumb-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-dark) 100%);
  color: var(--text-muted);
  font-size: 14px;
}
.tag {
  display: inline-block;
  font-size: 12px;
  color: var(--accent);
  background: rgba(198,242,78,0.08);
  border: 1px solid rgba(198,242,78,0.2);
  padding: 3px 12px;
  border-radius: 999px;
  font-weight: 500;
  letter-spacing: 0.5px;
}
.tag--small { font-size: 11px; padding: 2px 10px; }
.news-featured .tag {
  margin: 24px 24px 0;
  align-self: flex-start;
}
.news-featured h3 {
  font-size: 20px;
  color: #fff;
  padding: 12px 24px 0;
  line-height: 1.45;
  font-weight: 700;
}
.news-featured p {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 8px 24px 0;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.news-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  padding: 16px 24px;
  display: block;
}
.news-featured .news-date { margin-top: auto; }
.news-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.news-mini {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 5px;
  position: relative;
}
.news-mini::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) scaleY(0);
  width: 3px;
  height: 30px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
  transition: var(--transition);
}
.news-mini:hover {
  border-color: rgba(198,242,78,0.25);
  background: var(--bg-card-hover);
  transform: translateX(3px);
}
.news-mini:hover::before { transform: translateY(-50%) scaleY(1); }
.news-mini h4 {
  font-size: 15px;
  color: #fff;
  font-weight: 600;
  line-height: 1.5;
}
.news-mini .news-date { padding: 0; }
.news-mini .news-date::before {
  content: '📅 ';
  font-size: 11px;
  opacity: 0.7;
}
.news-empty {
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 72px 40px;
  text-align: center;
  grid-column: span 2;
}
.news-empty-icon {
  width: 44px;
  height: 44px;
  border: 2px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--text-muted);
  font-size: 18px;
}
.news-empty span {
  font-size: 17px;
  color: var(--text-secondary);
  font-weight: 600;
  display: block;
  margin-bottom: 6px;
}
.news-empty p {
  font-size: 14px;
  color: var(--text-muted);
}

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--border); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
  background: var(--bg-card);
}
.faq-item:hover { border-color: rgba(255,255,255,0.14); }
.faq-item.open {
  border-color: rgba(198,242,78,0.4);
  box-shadow: 0 0 0 1px rgba(198,242,78,0.08);
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  transition: var(--transition);
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  width: 16px;
  height: 16px;
  position: relative;
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--accent);
  transition: var(--transition);
  border-radius: 2px;
}
.faq-icon::before { width: 16px; height: 2px; top: 7px; left: 0; }
.faq-icon::after { width: 2px; height: 16px; top: 0; left: 7px; }
.faq-item.open .faq-icon::after { transform: scaleY(0); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer p {
  padding: 0 24px 22px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.85;
}

/* ---------- Footer ---------- */
.site-footer {
  background: #070A09;
  border-top: 1px solid var(--border);
  padding-top: 72px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.7fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-brand .logo { font-size: 21px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 16px;
  max-width: 300px;
  line-height: 1.8;
}
.footer-links h4,
.footer-contact h4 {
  font-size: 14px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-links a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 5px 0;
}
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact p {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact p::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.footer-copy {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  :root { --section-space: 90px; }
  .guest-grid { grid-template-columns: 1fr 1fr; }
  .guest-card.vertical { grid-column: span 2; }
  .ticket-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .ticket-card.featured { grid-column: span 2; transform: scale(1.01); order: -1; }
  .ticket-card.featured:hover { transform: scale(1.01) translateY(-2px); }
  .news-grid { grid-template-columns: 1fr; }
  .highlight-bar { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 46px; }
}
@media (max-width: 768px) {
  :root { --section-space: 64px; }
  .container { padding: 0 20px; }
  .main-nav {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(11,15,13,0.98);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    padding: 24px 32px 32px;
    gap: 4px;
    transform: translateY(-120%);
    transition: transform 0.28s ease;
    z-index: 99;
    align-items: stretch;
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav .nav-link {
    padding: 14px 4px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
  .main-nav .nav-link.active::after {
    left: 0;
    transform: none;
    width: 3px;
    height: 18px;
    border-radius: 0 3px 3px 0;
  }
  .nav-link.active { color: var(--accent); }
  .nav-cta-wrap .btn { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .nav-cta-wrap .btn-mobile {
    display: inline-flex;
    padding: 6px 14px;
    font-size: 12px;
  }
  .main-nav .btn-mobile {
    display: inline-flex;
    margin-top: 12px;
    width: 100%;
  }
  .hero { min-height: 88vh; padding: 110px 0 80px; }
  .hero h1 { font-size: 34px; }
  .hero-sub { font-size: 15px; margin-bottom: 28px; }
  .hero-meta { flex-direction: column; gap: 10px; }
  .hero-actions { flex-direction: column; gap: 12px; width: 100%; max-width: 280px; margin: 0 auto; }
  .hero-actions .btn { width: 100%; }
  .hero-scroll { bottom: 24px; }
  .section-head { margin-bottom: 40px; }
  .section-head h2 { font-size: 26px; }
  .timeline { padding-left: 56px; }
  .timeline-time {
    left: -56px;
    width: 46px;
    font-size: 12px;
  }
  .timeline::before { left: 22px; }
  .timeline-item::before { left: -45px; }
  .timeline-card { padding: 20px; }
  .guest-grid { grid-template-columns: 1fr; }
  .guest-card.vertical { grid-column: auto; }
  .guest-card.large { padding: 32px 24px; }
  .point-wrap { grid-template-columns: 1fr; gap: 0 30px; }
  .highlight-bar { grid-template-columns: 1fr 1fr; padding: 24px; }
  .highlight-bar .stat span { font-size: 28px; }
  .ticket-grid { grid-template-columns: 1fr; }
  .ticket-card.featured { grid-column: auto; order: 0; transform: none; }
  .ticket-card.featured:hover { transform: translateY(-3px); }
  .ticket-card { padding: 32px 24px; }
  .register .container { max-width: 100%; }
  .countdown-grid { gap: 10px; flex-wrap: wrap; }
  .countdown-item { min-width: 70px; padding: 12px 14px; }
  .countdown-item span { font-size: 26px; }
  .register-form { grid-template-columns: 1fr; padding: 24px 20px; gap: 14px; }
  .form-group.full,
  .register-form .btn,
  .form-success { grid-column: 1; }
  .register h2 { font-size: 24px; }
  .news-grid { grid-template-columns: 1fr; }
  .news-featured h3 { font-size: 17px; }
  .news-empty { grid-column: 1; padding: 48px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 40px; }
  .footer-brand p { max-width: 100%; }
  .footer-copy { padding: 18px 0; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 28px; }
  .hero-overline { font-size: 12px; padding: 5px 12px; }
  .ticket-grid { gap: 14px; }
  .highlight-bar { grid-template-columns: 1fr 1fr; gap: 12px; }
  .highlight-bar .stat span { font-size: 22px; }
  .faq-question { padding: 16px 18px; font-size: 14px; }
  .faq-answer p { font-size: 13px; }
  .timeline-card h3 { font-size: 16px; }
  .timeline-card p { font-size: 13px; }
  .point-item { gap: 12px; }
  .point-item h4 { font-size: 14px; }
  .nav-wrap { height: 64px; }
  .main-nav { top: 64px; }
  .logo { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* roulang page: article */
:root {
  --bg-deep: #0B0F0D;
  --bg-card: #131A17;
  --bg-card-hover: #18211D;
  --bg-section: #0E1410;
  --accent: #C6F24E;
  --accent-hover: #D5FF5E;
  --signal: #FF6B2C;
  --text-main: #D1D5DB;
  --text-sub: #9CA3AF;
  --text-weak: #6B7280;
  --border: #1F2A26;
  --border-light: rgba(255,255,255,0.08);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 24px rgba(0,0,0,0.35);
  --font-main: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Roboto Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --container: 1200px;
  --spacer-section: 96px;
  --spacer-section-mobile: 64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #0B0F0D;
  border-color: var(--accent);
}

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

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.2);
}

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

.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

.text-accent {
  color: var(--accent);
}

.text-mono {
  font-family: var(--font-mono);
}

/* ---------- Header 导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(11, 15, 13, 0.72);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}

.site-header.scrolled {
  background: rgba(11, 15, 13, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom-color: var(--border-light);
}

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

.logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #fff;
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  white-space: nowrap;
}

.logo-accent {
  color: var(--accent);
}

.logo-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: 4px;
  align-self: center;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 15px;
  color: var(--text-sub);
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.2s ease;
}

.nav-link:hover {
  color: var(--accent);
}

.nav-link:hover::after {
  width: 20px;
}

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

.nav-link.active::after {
  width: 20px;
  background: var(--accent);
}

.nav-cta-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 8px;
  transition: background 0.2s ease;
}

.nav-toggle:hover {
  background: rgba(255,255,255,0.05);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.btn-mobile {
  display: none;
}

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap {
  padding-top: 120px;
  padding-bottom: 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
}

.breadcrumb a {
  color: var(--text-weak);
  transition: color 0.2s ease;
}

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

.breadcrumb-sep {
  color: var(--border);
}

.breadcrumb-current {
  color: var(--text-sub);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 文章主体 ---------- */
.article-main {
  padding: 48px 0 40px;
}

.article-container {
  max-width: 860px;
}

.article-post {
  max-width: 760px;
  margin: 0 auto;
}

.article-head {
  padding: 24px 0 40px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 48px;
}

.article-head h1 {
  font-size: 42px;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 0 0 24px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--text-weak);
}

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

.meta-item svg {
  width: 15px;
  height: 15px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
}

.meta-cate {
  color: var(--accent);
  background: rgba(198,242,78,0.08);
  border: 1px solid rgba(198,242,78,0.2);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
}

/* ---------- 正文区域 ---------- */
.article-body {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-main);
}

.article-body h2 {
  font-size: 27px;
  font-weight: 700;
  line-height: 1.4;
  color: #fff;
  margin: 48px 0 20px;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
}

.article-body h3 {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  color: #fff;
  margin: 36px 0 16px;
}

.article-body h4 {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin: 28px 0 12px;
}

.article-body p {
  margin: 0 0 24px;
}

.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  transition: color 0.2s ease;
}

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

.article-body strong {
  color: #fff;
  font-weight: 600;
}

.article-body blockquote {
  border-left: 3px solid var(--accent);
  background: var(--bg-card);
  padding: 20px 24px;
  margin: 32px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-sub);
  font-size: 16px;
}

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

.article-body img {
  width: 100%;
  border-radius: var(--radius-md);
  margin: 32px 0;
}

.article-body figure {
  margin: 32px 0;
}

.article-body figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--text-weak);
  margin-top: 12px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 24px;
  padding-left: 8px;
}

.article-body ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
}

.article-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.article-body ol {
  counter-reset: article-ol;
}

.article-body ol li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 10px;
  counter-increment: article-ol;
}

.article-body ol li::before {
  content: counter(article-ol);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.article-body pre {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  overflow-x: auto;
  margin: 32px 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-main);
}

.article-body code {
  font-family: var(--font-mono);
  background: var(--bg-card);
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 14px;
  color: var(--accent);
  border: 1px solid var(--border-light);
}

.article-body pre code {
  background: transparent;
  padding: 0;
  border: none;
  color: inherit;
  font-size: 14px;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 15px;
}

.article-body th,
.article-body td {
  padding: 14px 16px;
  border: 1px solid var(--border);
  text-align: left;
}

.article-body th {
  background: var(--bg-card);
  color: #fff;
  font-weight: 600;
}

.article-body tr:nth-child(even) td {
  background: rgba(19,26,23,0.5);
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 42px 0;
}

/* ---------- 标签 ---------- */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  color: var(--text-sub);
  font-size: 13px;
  transition: all 0.2s ease;
}

.tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- 空态 ---------- */
.article-empty {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  padding: 100px 32px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
}

.empty-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: rgba(198,242,78,0.08);
  border: 1px solid rgba(198,242,78,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--accent);
}

.empty-title {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 12px;
}

.empty-desc {
  color: var(--text-sub);
  font-size: 15px;
  margin: 0 0 32px;
}

/* ---------- 相关推荐 ---------- */
.related-section {
  padding: 80px 0;
  background: var(--bg-section);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}

.section-head::before {
  content: '';
  width: 4px;
  height: 24px;
  background: var(--accent);
  border-radius: 2px;
}

.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-card {
  display: flex;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.related-card:hover {
  border-color: rgba(198,242,78,0.3);
  background: rgba(19,26,23,0.6);
}

.related-card .cover {
  width: 88px;
  height: 88px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-card);
}

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

.related-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: #fff;
  margin: 0 0 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-body p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-weak);
  margin: 0 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-body .tag-label {
  font-size: 12px;
  color: var(--accent);
  font-family: var(--font-mono);
}

/* ---------- 分页/返回 ---------- */
.article-pager-section {
  padding: 48px 0;
}

.article-pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  max-width: 760px;
  margin: 0 auto;
}

.pager-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-sub);
  font-size: 15px;
  transition: color 0.2s ease, transform 0.2s ease;
}

.pager-link:hover {
  color: var(--accent);
}

.pager-arrow {
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  transition: transform 0.2s ease;
}

.pager-prev:hover .pager-arrow {
  transform: translateX(-3px);
}

.pager-next:hover .pager-arrow {
  transform: translateX(3px);
}

/* ---------- CTA ---------- */
.cta-section {
  padding: 80px 0;
  background: var(--bg-card);
  border-top: 1px solid var(--border-light);
}

.cta-inner {
  max-width: 760px;
  text-align: center;
  background: radial-gradient(ellipse at center, rgba(198,242,78,0.04) 0%, transparent 60%);
  padding: 32px;
}

.cta-inner h2 {
  font-size: 34px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin: 0 0 16px;
}

.cta-inner p {
  color: var(--text-sub);
  font-size: 16px;
  margin: 0 0 36px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

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

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-light);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 60px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 20px;
  display: inline-flex;
}

.footer-brand p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 360px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 20px;
}

.footer-links a {
  display: block;
  font-size: 15px;
  color: var(--text-sub);
  padding: 6px 0;
  transition: color 0.2s ease;
}

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

.footer-contact p {
  font-size: 15px;
  color: var(--text-sub);
  margin: 0 0 10px;
  line-height: 1.6;
}

.footer-copy {
  border-top: 1px solid var(--border-light);
  padding: 20px 0;
}

.footer-copy .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-copy span {
  font-size: 12px;
  color: var(--text-weak);
}

.footer-copy a {
  font-size: 12px;
  color: var(--text-weak);
  transition: color 0.2s ease;
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1.2fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

  .nav-wrap {
    height: 64px;
  }

  .site-header.scrolled {
    background: rgba(11, 15, 13, 0.95);
  }

  .main-nav {
    position: fixed;
    top: 64px;
    right: 0;
    width: 280px;
    height: calc(100vh - 64px);
    background: var(--bg-deep);
    border-left: 1px solid var(--border-light);
    flex-direction: column;
    align-items: flex-start;
    padding: 40px 32px;
    gap: 8px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 99;
  }

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

  .nav-link {
    font-size: 18px;
    padding: 12px 0;
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,0.04);
  }

  .nav-link::after {
    display: none;
  }

  .nav-link.active {
    color: var(--accent);
    padding-left: 14px;
    border-left: 3px solid var(--accent);
  }

  .btn-mobile {
    display: inline-flex;
    margin-top: 24px;
    width: 100%;
  }

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

  .nav-toggle {
    display: flex;
  }

  .breadcrumb-wrap {
    padding-top: 96px;
  }

  .breadcrumb-current {
    max-width: 180px;
  }

  .article-main {
    padding: 32px 0 24px;
  }

  .article-head {
    padding: 12px 0 32px;
    margin-bottom: 36px;
  }

  .article-head h1 {
    font-size: 32px;
    line-height: 1.35;
  }

  .article-meta {
    gap: 12px;
    font-size: 13px;
  }

  .article-body {
    font-size: 16px;
    line-height: 1.85;
  }

  .article-body h2 {
    font-size: 24px;
  }

  .article-body h3 {
    font-size: 20px;
  }

  .article-body ul,
  .article-body ol {
    padding-left: 4px;
  }

  .related-section {
    padding: 64px 0;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .related-card {
    padding: 14px;
  }

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

  .article-pager {
    flex-direction: column;
    gap: 20px;
  }

  .cta-section {
    padding: 64px 0;
  }

  .cta-inner {
    padding: 16px;
  }

  .cta-inner h2 {
    font-size: 27px;
  }

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

  .footer-brand p {
    max-width: 100%;
  }

  .footer-copy .container {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .article-head h1 {
    font-size: 28px;
  }

  .article-body {
    font-size: 15px;
  }

  .article-body blockquote {
    padding: 16px 18px;
    font-size: 15px;
  }

  .cta-inner h2 {
    font-size: 24px;
  }

  .cta-btns .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* roulang page: category1 */
:root {
  --bg: #0B0F0D;
  --bg-card: #131A17;
  --bg-card-hover: #18211D;
  --accent: #C6F24E;
  --accent-soft: rgba(198, 242, 78, 0.12);
  --orange: #FF6B2C;
  --white: #F2F5F3;
  --text: #D1D5DB;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --border: #1F2A26;
  --border-light: rgba(255, 255, 255, 0.08);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
  --transition: 180ms ease;
  --font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

input,
select {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 28px;
  border: 1px solid transparent;
  transition: all var(--transition);
  line-height: 1.2;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #0B0F0D;
}

.btn-primary:hover {
  background: #d7f86a;
  transform: translateY(-1px);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(198, 242, 78, 0.4);
  outline-offset: 2px;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--white);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-mobile {
  display: none;
}

@media (max-width: 768px) {
  .btn-mobile {
    display: inline-flex;
    margin-top: 8px;
  }
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}

.site-header.scrolled {
  background: rgba(11, 15, 13, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom-color: var(--border-light);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--white);
  display: flex;
  align-items: baseline;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.logo-accent {
  color: var(--accent);
  font-weight: 700;
}

.logo-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  margin-left: 5px;
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 38px;
}

.nav-link {
  font-size: 15px;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 2px;
  transition: color var(--transition);
  letter-spacing: 0.01em;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform var(--transition);
}

.nav-link:hover {
  color: var(--accent);
}

.nav-link.active {
  color: var(--white);
}

.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-cta-wrap {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 6px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(11, 15, 13, 0.98);
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 32px 32px;
    gap: 22px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-115%);
    transition: transform 240ms ease;
    pointer-events: none;
  }

  .main-nav.open {
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta-wrap > .btn-sm {
    display: none;
  }

  .btn-mobile {
    display: inline-flex;
  }

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

@media (min-width: 901px) {
  .btn-mobile {
    display: none;
  }
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 180px 0 100px;
  overflow: hidden;
  background: #090C0B;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center 30%;
  opacity: 0.35;
  z-index: 0;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(to bottom, rgba(11, 15, 13, 0.6), var(--bg) 92%),
    radial-gradient(circle at 70% 30%, rgba(198, 242, 78, 0.06), transparent 55%);
}

.page-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

.breadcrumb span {
  color: var(--text-muted);
}

.page-hero h1 {
  font-size: 56px;
  line-height: 1.2;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 0.01em;
  margin-bottom: 20px;
}

.page-hero h1 .accent {
  color: var(--accent);
}

.page-hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 620px;
}

@media (max-width: 768px) {
  .page-hero {
    padding: 140px 0 64px;
  }

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

  .page-hero-desc {
    font-size: 15px;
  }
}

/* ===== Section ===== */
.section {
  padding: 96px 0;
}

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

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 52px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 24px;
}

.section-head-left {
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.section-num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.3;
  letter-spacing: 0.01em;
}

.section-head p {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 50%;
  text-align: right;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 36px;
  }

  .section-head p {
    max-width: 100%;
    text-align: left;
  }

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

/* ===== Topic Cards ===== */
.topic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.topic-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 32px 28px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.topic-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--transition);
}

.topic-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: rgba(198, 242, 78, 0.2);
}

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

.topic-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.topic-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.topic-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.topic-card h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.topic-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 18px;
}

.topic-more {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.topic-more:hover {
  gap: 10px;
}

.topic-more::before {
  content: "→";
  font-family: var(--font-mono);
}

@media (max-width: 768px) {
  .topic-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .topic-card {
    padding: 24px 20px;
  }

  .topic-card h3 {
    font-size: 18px;
  }
}

/* ===== Hot List ===== */
.hot-section {
  background: #090C0B;
}

.hot-list {
  max-width: 900px;
  margin: 0 auto;
}

.hot-item {
  display: flex;
  align-items: flex-start;
  gap: 28px;
  padding: 28px 16px;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border-color var(--transition);
  border-radius: var(--radius-md);
}

.hot-item:first-child {
  border-top: 1px solid var(--border);
}

.hot-item:hover {
  background: var(--bg-card);
  border-color: rgba(198, 242, 78, 0.15);
  padding-left: 20px;
}

.hot-item:hover .hot-item-num {
  color: var(--accent);
}

.hot-item-num {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--text-muted);
  min-width: 42px;
  padding-top: 6px;
  transition: color var(--transition);
  letter-spacing: 0.04em;
}

.hot-item-body {
  flex: 1;
}

.hot-item-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
  line-height: 1.45;
  transition: color var(--transition);
}

.hot-item:hover .hot-item-body h3 {
  color: var(--accent);
}

.hot-item-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 10px;
}

.hot-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hot-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-light);
}

.hot-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.hot-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--orange);
  background: rgba(255, 107, 44, 0.12);
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

@media (max-width: 768px) {
  .hot-item {
    flex-direction: row;
    gap: 14px;
    padding: 22px 12px;
  }

  .hot-item:hover {
    padding-left: 16px;
  }

  .hot-item-num {
    min-width: 30px;
    font-size: 13px;
  }

  .hot-item-body h3 {
    font-size: 16px;
  }
}

/* ===== Co-create Section ===== */
.co-create-section {
  background: var(--bg);
}

.co-create-grid {
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.co-create-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.co-create-row.reverse .co-create-img {
  order: -1;
}

.co-create-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  aspect-ratio: 4 / 3;
  position: relative;
}

.co-create-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 280ms ease;
}

.co-create-img:hover img {
  transform: scale(1.03);
}

.co-create-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 15, 13, 0.25), transparent 50%);
}

.co-create-text .co-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.co-create-text h3 {
  font-size: 26px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.35;
  margin-bottom: 16px;
}

.co-create-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 24px;
}

.co-create-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.co-step {
  font-size: 13px;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 999px;
  padding: 6px 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: border-color var(--transition), color var(--transition);
}

.co-step:hover {
  border-color: rgba(198, 242, 78, 0.3);
  color: var(--accent);
}

.co-step .step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

@media (max-width: 900px) {
  .co-create-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .co-create-row.reverse .co-create-img {
    order: 0;
  }

  .co-create-text h3 {
    font-size: 22px;
  }

  .co-create-grid {
    gap: 40px;
  }
}

/* ===== CTA Panel ===== */
.cta-panel {
  padding: 88px 0;
  background:
    linear-gradient(to bottom, rgba(11, 15, 13, 0.94), rgba(11, 15, 13, 0.88)),
    url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  position: relative;
}

.cta-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(198, 242, 78, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(198, 242, 78, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-inner .cta-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--orange);
  background: rgba(255, 107, 44, 0.12);
  border: 1px solid rgba(255, 107, 44, 0.2);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
  letter-spacing: 0.04em;
  font-weight: 600;
}

.cta-inner h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.35;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}

@media (max-width: 768px) {
  .cta-panel {
    padding: 64px 0;
  }

  .cta-inner h2 {
    font-size: 24px;
  }
}

/* ===== Related Cards ===== */
.related-section {
  padding: 72px 0 96px;
}

.related-title {
  font-size: 14px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
  margin-bottom: 28px;
  text-align: center;
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 820px;
  margin: 0 auto;
}

.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 180px;
}

.related-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 90% 20%, rgba(198, 242, 78, 0.08), transparent 55%);
  opacity: 0;
  transition: opacity var(--transition);
}

.related-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: rgba(198, 242, 78, 0.2);
}

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

.related-card:hover .related-card-link {
  color: var(--accent);
  gap: 10px;
}

.related-card-icon {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 14px;
  letter-spacing: 0.06em;
}

.related-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
  line-height: 1.4;
}

.related-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.related-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
  transition: gap var(--transition), color var(--transition);
}

.related-card-link::after {
  content: "→";
  font-family: var(--font-mono);
}

@media (max-width: 768px) {
  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .related-card {
    padding: 24px 28px;
    min-height: 0;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: #090C0B;
  border-top: 1px solid var(--border-light);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 56px;
  padding: 64px 0 48px;
}

.footer-brand .logo {
  font-size: 20px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 420px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 5px 0;
  transition: color var(--transition);
}

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

.footer-contact p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  padding: 3px 0;
}

.footer-copy {
  border-top: 1px solid var(--border);
  padding: 20px 0;
}

.footer-copy span {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 48px 0 36px;
  }
}

/* ===== Focus & Reduced Motion ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
    :root {
        --bg: #0B0F0D;
        --bg-2: #0E1410;
        --card: #131A17;
        --card-hover: #18211D;
        --primary: #C6F24E;
        --primary-bright: #D4F86B;
        --accent: #FF6B2C;
        --text: #D1D5DB;
        --text-2: #9CA3AF;
        --text-3: #6B7280;
        --border: rgba(255,255,255,0.08);
        --border-bright: rgba(198,242,78,0.3);
        --radius-lg: 16px;
        --radius-md: 12px;
        --radius-sm: 8px;
        --shadow: 0 8px 24px rgba(0,0,0,0.35);
        --space-section: 96px;
        --space-section-sm: 64px;
        --container: 1200px;
        --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        --font-mono: "JetBrains Mono", "Roboto Mono", SFMono-Regular, Consolas, monospace;
    }

    /* ===== Reset / Base ===== */
    *, *::before, *::after {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.8;
        color: var(--text);
        background: var(--bg);
        -webkit-font-smoothing: antialiased;
        text-rendering: optimizeLegibility;
    }

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

    a {
        color: inherit;
        text-decoration: none;
        transition: color 0.2s ease;
    }

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

    input, textarea, select {
        font-family: inherit;
        font-size: inherit;
        color: inherit;
        background: none;
        border: none;
        outline: none;
    }

    h1, h2, h3, h4 {
        line-height: 1.35;
        font-weight: 600;
        color: #fff;
    }

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

    /* ===== Header / Nav ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
        background: transparent;
        transition: background 0.3s ease, border-color 0.3s ease;
        border-bottom: 1px solid transparent;
    }

    .site-header.scrolled {
        background: rgba(11, 15, 13, 0.85);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-bottom-color: var(--border);
        box-shadow: 0 1px 12px rgba(0,0,0,0.2);
    }

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

    .logo {
        font-size: 22px;
        font-weight: 700;
        color: #fff;
        letter-spacing: 0.5px;
        white-space: nowrap;
        display: flex;
        align-items: center;
    }

    .logo-accent {
        color: var(--primary);
    }

    .logo-dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--accent);
        margin-left: 4px;
        display: inline-block;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 38px;
    }

    .nav-link {
        font-size: 15px;
        color: var(--text-2);
        position: relative;
        padding: 6px 0;
        letter-spacing: 0.3px;
        transition: color 0.2s ease;
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: var(--primary);
        border-radius: 2px;
        transition: width 0.2s ease;
    }

    .nav-link:hover {
        color: var(--primary);
    }

    .nav-link:hover::after {
        width: 20px;
    }

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

    .nav-link.active::after {
        width: 20px;
        left: 50%;
        transform: translateX(-50%);
        background: var(--primary);
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-size: 15px;
        font-weight: 600;
        border-radius: 999px;
        padding: 12px 28px;
        transition: all 0.2s ease;
        cursor: pointer;
        white-space: nowrap;
        letter-spacing: 0.3px;
    }

    .btn-primary {
        background: var(--primary);
        color: #0B0F0D;
        border: 1px solid var(--primary);
    }

    .btn-primary:hover {
        background: var(--primary-bright);
        border-color: var(--primary-bright);
        transform: translateY(-1px);
    }

    .btn-outline {
        background: transparent;
        color: #fff;
        border: 1px solid rgba(255,255,255,0.2);
    }

    .btn-outline:hover {
        border-color: var(--primary);
        color: var(--primary);
        transform: translateY(-1px);
    }

    .btn-sm {
        padding: 8px 20px;
        font-size: 14px;
    }

    .btn-block {
        width: 100%;
    }

    .btn-mobile {
        display: none;
    }

    .nav-cta-wrap {
        display: flex;
        align-items: center;
        gap: 16px;
    }

    .nav-toggle {
        display: none;
        flex-direction: column;
        gap: 5px;
        width: 32px;
        height: 32px;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--border);
        border-radius: 8px;
    }

    .nav-toggle span {
        display: block;
        width: 16px;
        height: 2px;
        background: #fff;
        border-radius: 2px;
        transition: all 0.3s ease;
    }

    .nav-toggle.open span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.open span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.open span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* ===== Page Hero ===== */
    .page-hero {
        position: relative;
        padding: 170px 0 80px;
        background:
            linear-gradient(180deg, rgba(11,15,13,0.92) 15%, rgba(11,15,13,0.84) 55%, rgba(11,15,13,0.97) 100%),
            url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        border-bottom: 1px solid var(--border);
    }

    .hero-grid-lines {
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
        background-size: 56px 56px;
        pointer-events: none;
    }

    .hero-inner {
        position: relative;
        max-width: 880px;
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 20px;
        font-size: 14px;
        color: var(--text-3);
    }

    .breadcrumb a {
        color: var(--text-3);
        transition: color 0.2s ease;
    }

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

    .breadcrumb .sep {
        color: var(--text-3);
        opacity: 0.5;
    }

    .hero-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(198,242,78,0.1);
        color: var(--primary);
        border: 1px solid rgba(198,242,78,0.25);
        font-size: 13px;
        font-weight: 500;
        padding: 6px 16px;
        border-radius: 999px;
        letter-spacing: 0.5px;
        margin-bottom: 24px;
    }

    .hero-tag .dot {
        width: 6px;
        height: 6px;
        background: var(--primary);
        border-radius: 50%;
        animation: pulse 2s ease infinite;
    }

    @keyframes pulse {
        0%, 100% { opacity: 1; transform: scale(1); }
        50% { opacity: 0.5; transform: scale(0.8); }
    }

    .page-hero h1 {
        font-size: 56px;
        line-height: 1.25;
        letter-spacing: 1px;
        color: #fff;
        margin-bottom: 20px;
    }

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

    .hero-desc {
        font-size: 18px;
        line-height: 1.8;
        color: var(--text-2);
        max-width: 660px;
        margin-bottom: 36px;
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        margin-bottom: 48px;
    }

    .hero-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 32px;
        align-items: center;
        font-family: var(--font-mono);
        font-size: 14px;
        color: var(--text-3);
        border-top: 1px solid var(--border);
        padding-top: 24px;
        max-width: 660px;
    }

    .hero-meta .mono-value {
        color: var(--primary);
        font-weight: 600;
    }

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

    .section-alt {
        background: var(--bg-2);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

    .section-header {
        margin-bottom: 56px;
        max-width: 720px;
    }

    .section-header.center {
        margin-left: auto;
        margin-right: auto;
        text-align: center;
    }

    .section-header .section-index {
        font-family: var(--font-mono);
        font-size: 14px;
        color: var(--primary);
        letter-spacing: 2px;
        display: block;
        margin-bottom: 12px;
    }

    .section-header h2 {
        font-size: 34px;
        color: #fff;
        margin-bottom: 16px;
        letter-spacing: 0.5px;
    }

    .section-header p {
        font-size: 16px;
        color: var(--text-2);
        line-height: 1.8;
    }

    /* ===== Value Cards ===== */
    .value-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .value-card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 32px;
        transition: all 0.2s ease;
        position: relative;
        overflow: hidden;
    }

    .value-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: var(--primary);
        opacity: 0;
        transition: opacity 0.2s ease;
    }

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

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

    .value-card .value-num {
        font-family: var(--font-mono);
        font-size: 36px;
        font-weight: 700;
        color: var(--primary);
        opacity: 0.8;
        line-height: 1;
        margin-bottom: 16px;
        display: block;
    }

    .value-card h3 {
        font-size: 20px;
        margin-bottom: 10px;
    }

    .value-card p {
        color: var(--text-2);
        font-size: 15px;
        line-height: 1.8;
    }

    .value-card:nth-child(even) {
        transform: translateY(24px);
    }

    .value-card:nth-child(even):hover {
        transform: translateY(20px);
    }

    /* ===== Cooperation Modes ===== */
    .mode-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 32px;
        align-items: center;
        margin-bottom: 48px;
    }

    .mode-row:last-child {
        margin-bottom: 0;
    }

    .mode-image-wrap {
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 1px solid var(--border);
        line-height: 0;
        background: var(--card);
    }

    .mode-image-wrap img {
        width: 100%;
        aspect-ratio: 16 / 9;
        object-fit: cover;
        transition: transform 0.6s ease;
    }

    .mode-image-wrap:hover img {
        transform: scale(1.03);
    }

    .mode-content {
        padding: 16px 0;
    }

    .mode-label {
        display: inline-block;
        font-size: 12px;
        font-weight: 600;
        letter-spacing: 1px;
        color: var(--primary);
        background: rgba(198,242,78,0.08);
        border: 1px solid rgba(198,242,78,0.2);
        padding: 4px 12px;
        border-radius: 999px;
        margin-bottom: 16px;
    }

    .mode-content h3 {
        font-size: 24px;
        margin-bottom: 12px;
    }

    .mode-content p {
        color: var(--text-2);
        font-size: 15px;
        line-height: 1.8;
        margin-bottom: 16px;
    }

    .mode-list {
        list-style: none;
    }

    .mode-list li {
        position: relative;
        padding-left: 24px;
        margin-bottom: 8px;
        color: var(--text-2);
        font-size: 15px;
    }

    .mode-list li::before {
        content: '';
        position: absolute;
        left: 0;
        top: 10px;
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: var(--primary);
        opacity: 0.7;
    }

    .mode-row.flip .mode-content {
        order: 1;
    }

    .mode-row.flip .mode-image-wrap {
        order: 2;
    }

    .mode-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        justify-content: center;
        margin-top: 48px;
        padding-top: 32px;
        border-top: 1px solid var(--border);
    }

    .mode-tag {
        display: inline-block;
        padding: 8px 20px;
        border: 1px solid var(--border);
        border-radius: 999px;
        font-size: 14px;
        color: var(--text-2);
        background: var(--card);
        transition: all 0.2s ease;
    }

    .mode-tag:hover {
        border-color: var(--border-bright);
        color: var(--primary);
    }

    /* ===== Steps ===== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }

    .step-card {
        background: transparent;
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 28px 24px;
        position: relative;
        transition: all 0.2s ease;
    }

    .step-card:hover {
        background: var(--card-hover);
        border-color: var(--border-bright);
        transform: translateY(-4px);
    }

    .step-label {
        font-family: var(--font-mono);
        font-size: 13px;
        color: var(--accent);
        letter-spacing: 1px;
        display: block;
        margin-bottom: 10px;
    }

    .step-card h3 {
        font-size: 18px;
        margin-bottom: 10px;
    }

    .step-card p {
        font-size: 14px;
        color: var(--text-2);
        line-height: 1.7;
    }

    .step-arrow {
        position: absolute;
        top: 50%;
        right: -18px;
        transform: translateY(-50%);
        color: var(--primary);
        font-size: 18px;
        z-index: 2;
    }

    .step-card:last-child .step-arrow {
        display: none;
    }

    /* ===== Partner ===== */
    .partner-band {
        background: linear-gradient(135deg, rgba(198,242,78,0.04), transparent 60%);
        border: 1px solid rgba(198,242,78,0.15);
        border-radius: var(--radius-lg);
        padding: 40px;
        display: grid;
        grid-template-columns: 1.2fr 0.8fr;
        gap: 40px;
        align-items: center;
        margin-bottom: 48px;
    }

    .band-label {
        font-family: var(--font-mono);
        font-size: 13px;
        color: var(--primary);
        letter-spacing: 2px;
        margin-bottom: 12px;
        display: block;
    }

    .partner-band h3 {
        font-size: 24px;
        margin-bottom: 12px;
    }

    .partner-band p {
        color: var(--text-2);
        font-size: 15px;
        line-height: 1.8;
    }

    .band-nums {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .band-num {
        text-align: center;
        padding: 20px;
        background: rgba(11,15,13,0.5);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
    }

    .band-num .num {
        font-family: var(--font-mono);
        font-size: 38px;
        font-weight: 700;
        color: var(--primary);
        line-height: 1;
        display: block;
        margin-bottom: 6px;
    }

    .band-num .cap {
        font-size: 13px;
        color: var(--text-3);
    }

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

    .partner-card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 24px;
        text-align: center;
        transition: all 0.2s ease;
    }

    .partner-card:hover {
        border-color: var(--border-bright);
        transform: translateY(-4px);
        background: var(--card-hover);
    }

    .partner-logo-placeholder {
        width: 64px;
        height: 64px;
        border-radius: 16px;
        background: rgba(198,242,78,0.08);
        border: 1px solid rgba(198,242,78,0.15);
        margin: 0 auto 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--font-mono);
        font-weight: 700;
        font-size: 20px;
        color: var(--primary);
    }

    .partner-card h4 {
        font-size: 16px;
        margin-bottom: 4px;
    }

    .partner-region {
        font-size: 13px;
        color: var(--text-3);
    }

    /* ===== Related ===== */
    .related-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .related-card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 32px;
        display: flex;
        gap: 24px;
        align-items: center;
        transition: all 0.2s ease;
    }

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

    .related-card .thumb {
        width: 120px;
        height: 90px;
        flex-shrink: 0;
        border-radius: var(--radius-md);
        overflow: hidden;
        background: var(--bg);
        border: 1px solid var(--border);
    }

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

    .related-card h3 {
        font-size: 20px;
        margin-bottom: 8px;
    }

    .related-card p {
        color: var(--text-2);
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: 10px;
    }

    .link-more {
        font-size: 14px;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .link-more .arrow {
        transition: transform 0.2s ease;
    }

    .related-card:hover .link-more .arrow {
        transform: translateX(3px);
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 800px;
        margin: 0 auto;
    }

    .faq-item {
        border: 1px solid var(--border);
        transition: border-color 0.2s ease;
        margin-bottom: 16px;
        border-radius: var(--radius-md);
        background: var(--card);
    }

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

    .faq-question {
        width: 100%;
        text-align: left;
        padding: 20px 24px;
        font-size: 16px;
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
        font-weight: 500;
        border-radius: var(--radius-md);
    }

    .faq-icon {
        width: 24px;
        height: 24px;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        border: 1px solid var(--border);
        position: relative;
        transition: all 0.2s ease;
        margin-left: 16px;
    }

    .faq-icon::before,
    .faq-icon::after {
        content: '';
        position: absolute;
        background: var(--text-2);
        border-radius: 1px;
        transition: transform 0.2s ease, background 0.2s ease;
    }

    .faq-icon::before {
        width: 10px;
        height: 2px;
    }

    .faq-icon::after {
        width: 2px;
        height: 10px;
    }

    .faq-item.active .faq-icon {
        border-color: var(--primary);
    }

    .faq-item.active .faq-icon::before {
        background: var(--primary);
    }

    .faq-item.active .faq-icon::after {
        transform: scaleY(0);
        background: var(--primary);
    }

    .faq-answer {
        display: none;
        padding: 0 24px 20px;
        color: var(--text-2);
        font-size: 15px;
        line-height: 1.8;
    }

    .faq-item.active .faq-answer {
        display: block;
    }

    /* ===== CTA ===== */
    .cta-section {
        padding: 96px 0;
        position: relative;
        overflow: hidden;
        background:
            linear-gradient(180deg, rgba(11,15,13,0.96), rgba(11,15,13,0.9)),
            url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
        border-top: 1px solid var(--border);
    }

    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
        background-size: 56px 56px;
        pointer-events: none;
    }

    .cta-grid {
        position: relative;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 48px;
        align-items: center;
    }

    .cta-copy h2 {
        font-size: 34px;
        margin-bottom: 16px;
    }

    .cta-copy p {
        color: var(--text-2);
        font-size: 16px;
        line-height: 1.8;
        margin-bottom: 24px;
    }

    .cta-copy .cta-list {
        list-style: none;
    }

    .cta-copy .cta-list li {
        position: relative;
        padding-left: 28px;
        margin-bottom: 12px;
        color: var(--text-2);
        font-size: 15px;
    }

    .cta-copy .cta-list li::before {
        content: '✓';
        position: absolute;
        left: 0;
        color: var(--primary);
        font-weight: 700;
    }

    .cta-form-card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 32px;
    }

    .form-row {
        margin-bottom: 20px;
    }

    .form-row label {
        display: block;
        font-size: 14px;
        color: var(--text-2);
        margin-bottom: 8px;
    }

    .form-row input,
    .form-row select {
        width: 100%;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        padding: 12px 16px;
        transition: border-color 0.2s ease, box-shadow 0.2s ease;
        color: var(--text);
    }

    .form-row input::placeholder {
        color: var(--text-3);
    }

    .form-row select {
        appearance: none;
        -webkit-appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239CA3AF' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
        background-position: right 16px center;
        background-repeat: no-repeat;
    }

    .form-row select option {
        background: var(--bg);
        color: var(--text);
    }

    .form-row input:focus,
    .form-row select:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 4px rgba(198, 242, 78, 0.15);
    }

    .form-success {
        background: rgba(198,242,78,0.08);
        border: 1px solid rgba(198,242,78,0.25);
        border-radius: var(--radius-md);
        padding: 24px;
        text-align: center;
        color: var(--primary);
        font-size: 15px;
        line-height: 1.8;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #080B09;
        border-top: 1px solid var(--border);
        padding: 64px 0 0;
    }

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

    .footer-grid .logo {
        margin-bottom: 14px;
        font-size: 20px;
    }

    .footer-brand p {
        color: var(--text-3);
        font-size: 14px;
        line-height: 1.8;
        max-width: 360px;
        margin-top: 12px;
    }

    .footer-links h4,
    .footer-contact h4 {
        font-size: 14px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 16px;
        letter-spacing: 1px;
    }

    .footer-links a {
        display: block;
        color: var(--text-3);
        font-size: 15px;
        margin-bottom: 10px;
        transition: color 0.2s ease;
    }

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

    .footer-contact p {
        color: var(--text-3);
        font-size: 14px;
        margin-bottom: 10px;
        line-height: 1.6;
    }

    .footer-copy {
        border-top: 1px solid rgba(255,255,255,0.06);
        padding: 20px 0;
    }

    .footer-copy span {
        font-size: 12px;
        color: var(--text-3);
        font-family: var(--font-mono);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        :root {
            --space-section: 80px;
        }

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

        .partner-band {
            grid-template-columns: 1fr;
            gap: 32px;
        }

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

        .mode-row {
            grid-template-columns: 1fr;
        }

        .mode-row.flip .mode-content {
            order: 0;
        }

        .mode-row.flip .mode-image-wrap {
            order: 0;
        }
    }

    @media (max-width: 768px) {
        :root {
            --space-section: 64px;
        }

        .nav-wrap {
            height: 64px;
        }

        .main-nav {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(11, 15, 13, 0.96);
            padding: 24px;
            flex-direction: column;
            align-items: flex-start;
            gap: 20px;
            border-bottom: 1px solid var(--border);
            z-index: 99;
        }

        .main-nav.open {
            display: flex;
        }

        .nav-toggle {
            display: flex;
        }

        .btn-mobile {
            display: inline-flex;
            margin-top: 8px;
        }

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

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

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

        .hero-meta {
            gap: 16px;
            font-size: 13px;
        }

        .section-header h2 {
            font-size: 26px;
        }

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

        .value-card:nth-child(even) {
            transform: translateY(0);
        }

        .value-card:nth-child(even):hover {
            transform: translateY(-4px);
        }

        .mode-content h3 {
            font-size: 22px;
        }

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

        .step-arrow {
            display: none;
        }

        .partners-gallery {
            grid-template-columns: 1fr;
        }

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

        .related-card {
            padding: 24px;
        }

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

        .cta-copy h2 {
            font-size: 26px;
        }

        .cta-form-card {
            padding: 24px;
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 20px;
        }

        .page-hero {
            padding: 140px 0 60px;
        }

        .hero-actions {
            flex-direction: column;
            align-items: stretch;
        }

        .hero-actions .btn {
            width: 100%;
        }

        .partner-band {
            padding: 28px;
        }

        .band-nums {
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .band-num .num {
            font-size: 30px;
        }

        .related-card {
            flex-direction: column;
            align-items: flex-start;
            text-align: left;
        }

        .related-card .thumb {
            width: 100%;
            height: 160px;
        }

        .footer-grid {
            gap: 24px;
        }
    }

    /* ===== Reduced Motion ===== */
    @media (prefers-reduced-motion: reduce) {
        *, *::before, *::after {
            animation-duration: 0.01ms !important;
            transition-duration: 0.01ms !important;
        }

        html {
            scroll-behavior: auto;
        }
    }