/* roulang page: index */
:root {
  --bg: #0B0E1A;
  --card-bg: #171A2E;
  --card-bg-2: #1F2340;
  --primary: #7C3AED;
  --primary-dark: #4C1D95;
  --primary-light: #A78BFA;
  --accent: #22D3EE;
  --gold: #F5B544;
  --text: #E6E8F2;
  --text-muted: #9DA3BC;
  --border: rgba(124, 58, 237, 0.16);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
  --shadow-hover: 0 14px 40px rgba(124, 58, 237, 0.25);
  --shadow-btn: 0 8px 20px rgba(124, 58, 237, 0.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 15.5px;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 { font-weight: 700; color: #fff; }
a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: #fff; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
.container { max-width: 1240px; padding-left: 20px; padding-right: 20px; }

/* ===== 按钮 ===== */
.btn {
  border-radius: 14px;
  padding: 12px 28px;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.25s ease-out;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary {
  background: linear-gradient(135deg, #7C3AED, #4C1D95);
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #8B5CF6, #5B21B6);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(124, 58, 237, 0.5);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 14px rgba(124, 58, 237, 0.3); }
.btn-outline-light {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #fff;
}
.btn-outline-light:hover {
  border-color: var(--primary);
  background: rgba(124, 58, 237, 0.12);
  color: #fff;
  transform: translateY(-1px);
}
.btn-lg { padding: 16px 40px; font-size: 16px; border-radius: 16px; }
.btn-sm { padding: 8px 22px; font-size: 14px; border-radius: 12px; }
.btn:focus, .btn:focus-visible { outline: 3px solid rgba(34, 211, 238, 0.35); outline-offset: 2px; }

/* ===== 徽章 / 标签 ===== */
.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}
.badge-tag i { color: var(--gold); font-size: 12px; }
.gold-badge {
  background: linear-gradient(135deg, #FBBF24, #D97706);
  color: #1a1a1a;
  border-radius: 8px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  display: inline-block;
}
.type-tag {
  display: inline-block;
  background: transparent;
  border: 1px solid rgba(34, 211, 238, 0.6);
  color: var(--accent);
  border-radius: var(--radius-pill);
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 600;
}
.hot-tag {
  background: linear-gradient(135deg, #7C3AED, #22D3EE);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 700;
  display: inline-block;
}

/* ===== 导航 Dock ===== */
.site-header {
  position: relative;
  z-index: 1000;
  padding-top: 14px;
}
.site-nav-wrap {
  display: flex;
  justify-content: center;
  padding: 0 16px;
}
.nav-dock {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1050;
  width: 100%;
  max-width: 1000px;
  background: rgba(15, 18, 37, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.3px;
}
.nav-logo:hover { color: #fff; }
.logo-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #7C3AED, #22D3EE);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.4);
}
.logo-text { background: linear-gradient(135deg, #fff, #C4B5FD); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 8px 16px;
  border-radius: 12px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
}
.nav-link:hover {
  background: rgba(124, 58, 237, 0.18);
  color: #fff;
}
.nav-link.active { color: var(--primary-light); font-weight: 600; background: rgba(124, 58, 237, 0.12); }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  color: #fff;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}
.nav-toggle:hover { background: rgba(124, 58, 237, 0.2); border-color: var(--primary); }
.nav-toggle:focus { outline: 3px solid rgba(124, 58, 237, 0.3); }

/* ===== 通用卡片 ===== */
.card-custom {
  background: linear-gradient(0.5deg, var(--card-bg), var(--card-bg-2));
  border: 1px solid rgba(139, 92, 246, 0.14);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease-out;
  height: 100%;
}
.card-custom:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

/* ===== Hero ===== */
.hero-section {
  position: relative;
  padding: 160px 0 96px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 20% 25%, rgba(76, 29, 149, 0.55), transparent 55%),
    radial-gradient(ellipse at 80% 10%, rgba(124, 58, 237, 0.35), transparent 45%),
    radial-gradient(ellipse at 60% 100%, rgba(34, 211, 238, 0.08), transparent 50%),
    #0B0E1A;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.25;
  pointer-events: none;
}
.hero-section .container { position: relative; z-index: 2; }
.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.hero-title .text-gradient {
  background: linear-gradient(135deg, #A78BFA, #22D3EE);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 420px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-visual {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(76, 29, 149, 0.4);
}
.hero-visual img { width: 100%; height: 420px; object-fit: cover; }
.hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 14, 26, 0.2) 0%, transparent 40%, rgba(11, 14, 26, 0.7) 100%);
}
.hero-float-card {
  position: absolute;
  z-index: 3;
  background: rgba(15, 18, 37, 0.88);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(167, 139, 250, 0.3);
  border-radius: 16px;
  padding: 16px 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  animation: floatY 4s ease-in-out infinite;
}
.hero-float-card .fc-label { font-size: 12px; color: var(--text-muted); }
.hero-float-card .fc-value { font-size: 20px; font-weight: 700; color: var(--gold); }
.hero-float-card.fc-1 { top: 30px; right: 24px; }
.hero-float-card.fc-2 { bottom: 30px; left: 24px; animation-delay: 2s; }
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ===== 数据徽章条 ===== */
.stats-bar {
  position: relative;
  z-index: 5;
  margin: -40px 0 40px;
}
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(135deg, rgba(245, 181, 68, 0.07), rgba(245, 181, 68, 0.02));
  border: 1px solid rgba(245, 181, 68, 0.25);
  border-radius: var(--radius-pill);
  padding: 18px 22px;
}
.stat-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 14px;
  background: rgba(245, 181, 68, 0.12);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.stat-num {
  font-family: "DIN Alternate", "Arial Narrow", tabular-nums;
  font-size: 28px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1.2;
}
.stat-label { font-size: 13px; color: var(--text-muted); }

/* ===== 板块通用 ===== */
.section-title { font-size: 36px; font-weight: 800; letter-spacing: -0.5px; line-height: 1.3; }
.section-subtitle { color: var(--text-muted); font-size: 16px; max-width: 560px; }
.section-header { margin-bottom: 48px; }
.section-header.row { align-items: flex-end; }

/* ===== 会员权益对比 ===== */
.plans-section { padding: 96px 0; }
.plan-card {
  background: linear-gradient(0.5deg, var(--card-bg), var(--card-bg-2));
  border: 1px solid rgba(139, 92, 246, 0.14);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  height: 100%;
  position: relative;
  transition: all 0.25s ease-out;
}
.plan-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.plan-card.popular {
  background: linear-gradient(160deg, rgba(76, 29, 149, 0.55) 0%, #1A1E38 60%, #171A2E 100%);
  border: 1.5px solid var(--primary-light);
  box-shadow: 0 0 40px rgba(124, 58, 237, 0.2);
  min-height: calc(100% + 28px);
  margin-top: -14px;
  transform: none;
  z-index: 2;
}
.plan-card.popular:hover { transform: translateY(-4px); }
.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #FBBF24, #D97706);
  color: #1a1a1a;
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  padding: 4px 18px;
  box-shadow: 0 4px 16px rgba(245, 181, 68, 0.4);
  white-space: nowrap;
}
.plan-name { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.plan-tagline { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.plan-price {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.plan-price strong {
  font-family: "DIN Alternate", "Arial Narrow", tabular-nums;
  font-size: 36px;
  color: var(--gold);
  font-weight: 800;
}
.plan-list { list-style: none; padding: 0; margin: 0 0 28px; }
.plan-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 14.5px;
  color: var(--text);
}
.plan-list li i {
  color: var(--accent);
  font-size: 14px;
  margin-top: 5px;
  flex-shrink: 0;
}
.plan-cta { text-align: center; }

/* ===== 等级亮点时间线 ===== */
.timeline-section { padding: 96px 0; background: linear-gradient(180deg, var(--bg), #0D1126 50%, var(--bg)); }
.timeline-wrap { position: relative; max-width: 900px; margin: 0 auto; }
.timeline-wrap::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  box-shadow: 0 0 12px rgba(124, 58, 237, 0.5);
  transform: translateX(-50%);
}
.timeline-item {
  position: relative;
  width: 50%;
  padding: 20px 40px;
  margin-bottom: 30px;
}
.timeline-item:nth-child(odd) { left: 0; text-align: right; }
.timeline-item:nth-child(even) { left: 50%; text-align: left; }
.timeline-item .timeline-card {
  display: inline-block;
  text-align: left;
  max-width: 420px;
  background: linear-gradient(0.5deg, var(--card-bg), var(--card-bg-2));
  border: 1px solid rgba(139, 92, 246, 0.14);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease-out;
}
.timeline-item .timeline-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-hover); }
.timeline-num {
  display: inline-block;
  background: linear-gradient(135deg, #FBBF24, #D97706);
  color: #1a1a1a;
  font-size: 14px;
  font-weight: 800;
  border-radius: 10px;
  padding: 4px 14px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.timeline-card h3 { font-size: 20px; margin-bottom: 8px; }
.timeline-card p { color: var(--text-muted); font-size: 14px; margin-bottom: 12px; }
.timeline-card ul { list-style: none; padding: 0; margin: 0; }
.timeline-card ul li {
  padding: 4px 0;
  font-size: 13.5px;
  color: var(--text);
  position: relative;
  padding-left: 20px;
}
.timeline-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.timeline-dot {
  position: absolute;
  top: 30px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #0B0E1A;
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.5);
  z-index: 2;
}
.timeline-item:nth-child(odd) .timeline-dot { right: -8px; }
.timeline-item:nth-child(even) .timeline-dot { left: -8px; }

/* ===== 专属内容预览 ===== */
.preview-section { padding: 96px 0; }
.feature-card {
  background: linear-gradient(0.5deg, var(--card-bg), var(--card-bg-2));
  border: 1px solid rgba(139, 92, 246, 0.14);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease-out;
}
.feature-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.feature-card .cover-wrap { position: relative; overflow: hidden; }
.feature-card .cover-wrap img { width: 100%; height: 220px; object-fit: cover; transition: transform 0.3s ease-out; }
.feature-card:hover .cover-wrap img { transform: scale(1.03); }
.feature-card .cover-wrap .type-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 18, 37, 0.7);
  backdrop-filter: blur(6px);
}
.feature-card .card-body { padding: 20px 22px; display: flex; flex-direction: column; flex: 1; }
.feature-card .card-body h3 { font-size: 17px; margin-bottom: 8px; color: #fff; }
.feature-card .card-body p { font-size: 14px; color: var(--text-muted); margin-bottom: 14px; flex: 1; }
.feature-card .card-link { font-size: 14px; font-weight: 600; color: var(--accent); }
.feature-card .card-link:hover { color: #fff; }
.feature-lg .cover-wrap img { height: 330px; }
.feature-lg .card-body h3 { font-size: 22px; }
.feature-lg .card-body p { font-size: 15px; }

/* ===== 最新信息 ===== */
.news-section { padding: 96px 0; background: #0C101E; }
.news-list { display: flex; flex-direction: column; }
.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.2s;
}
.news-item:last-child { border-bottom: none; }
.news-item:hover { background: rgba(124, 58, 237, 0.03); }
.news-date {
  width: 60px;
  flex-shrink: 0;
  text-align: center;
  border-right: 2px solid rgba(245, 181, 68, 0.3);
  padding-right: 14px;
}
.news-date .day {
  font-family: "DIN Alternate", "Arial Narrow", tabular-nums;
  font-size: 24px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1.2;
  display: block;
}
.news-date .month { font-size: 12px; color: var(--text-muted); }
.news-body { flex: 1; min-width: 0; }
.news-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-body h3:hover { color: #fff; }
.news-body p {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 6px;
}
.news-category {
  display: inline-block;
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.3);
  color: var(--accent);
  border-radius: var(--radius-pill);
  font-size: 12px;
  padding: 2px 12px;
}
.news-sidebar {
  background: linear-gradient(0.5deg, var(--card-bg), var(--card-bg-2));
  border: 1px solid rgba(139, 92, 246, 0.14);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.news-sidebar h4 {
  font-size: 16px;
  margin-bottom: 18px;
  color: #fff;
  position: relative;
  padding-left: 14px;
}
.news-sidebar h4::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  width: 4px;
  height: 16px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}
.news-sidebar .tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.news-sidebar .tag-list a {
  background: rgba(124, 58, 237, 0.08);
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-radius: var(--radius-pill);
  padding: 5px 14px;
  font-size: 13px;
  color: var(--text);
  transition: all 0.2s;
}
.news-sidebar .tag-list a:hover { background: rgba(124, 58, 237, 0.2); border-color: var(--primary); color: #fff; }
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: rgba(124, 58, 237, 0.05);
  border: 1px dashed rgba(124, 58, 237, 0.3);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 15px;
}
.empty-state i {
  font-size: 32px;
  color: var(--primary);
  display: block;
  margin-bottom: 12px;
}

/* ===== FAQ ===== */
.faq-section { padding: 96px 0; }
.faq-left h2 { margin-bottom: 14px; }
.faq-left p { color: var(--text-muted); font-size: 15px; margin-bottom: 20px; }
.faq-contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}
.faq-contact:hover { color: #fff; }
.custom-accordion .accordion-item {
  background: var(--card-bg);
  border: 1px solid rgba(139, 92, 246, 0.14);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: all 0.25s;
}
.custom-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: rgba(167, 139, 250, 0.4);
  background: linear-gradient(0.5deg, #191D35, #1E2138);
}
.custom-accordion .accordion-button {
  background: transparent;
  color: var(--text);
  font-size: 15.5px;
  font-weight: 600;
  padding: 20px 24px;
  box-shadow: none;
  border: none;
  position: relative;
}
.custom-accordion .accordion-button::after {
  content: '\f067';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  background: none;
  width: auto;
  height: auto;
  font-size: 15px;
  color: var(--primary-light);
  transition: transform 0.2s;
}
.custom-accordion .accordion-button:not(.collapsed) {
  color: #fff;
  background: transparent;
}
.custom-accordion .accordion-button:not(.collapsed)::after {
  content: '\f00d';
  transform: rotate(45deg);
  color: var(--gold);
}
.custom-accordion .accordion-button:focus {
  box-shadow: none;
  outline: 3px solid rgba(124, 58, 237, 0.2);
  outline-offset: -3px;
}
.custom-accordion .accordion-body {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section { padding: 96px 0; }
.cta-panel {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(76, 29, 149, 0.5), transparent 60%),
    linear-gradient(135deg, #2E1065, #0B0E1A);
  border: 1px solid rgba(124, 58, 237, 0.5);
  border-radius: 32px;
  padding: 72px 48px;
  text-align: center;
  box-shadow: 0 0 60px rgba(124, 58, 237, 0.25), inset 0 0 80px rgba(76, 29, 149, 0.15);
  position: relative;
  overflow: hidden;
}
.cta-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.2;
  pointer-events: none;
}
.cta-panel h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}
.cta-panel p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
  margin-bottom: 32px;
  position: relative;
  z-index: 2;
}
.cta-panel .cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}
.cta-panel .text-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.cta-panel .text-link:hover { color: #fff; }

/* ===== 页脚 ===== */
.site-footer {
  background: #080A14;
  border-top: 1px solid rgba(124, 58, 237, 0.25);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-brand .logo-text { font-size: 18px; margin-bottom: 8px; }
.footer-brand p { color: var(--text-muted); font-size: 14px; max-width: 260px; }
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: var(--text-muted); font-size: 14px; }
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ===== 响应式 ===== */
@media (max-width: 991.98px) {
  .nav-dock { max-width: calc(100% - 32px); }
  .nav-menu {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 260px;
    background: rgba(15, 18, 37, 0.96);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
  }
  .nav-menu.open { display: flex; }
  .nav-link { padding: 12px 14px; }
  .nav-toggle { display: flex; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .hero-section { padding: 130px 0 72px; }
  .hero-title { font-size: 38px; }
  .section-title { font-size: 30px; }
  .timeline-wrap::before { left: 12px; }
  .timeline-item { width: 100%; left: 0 !important; text-align: left !important; padding: 20px 0 20px 40px; }
  .timeline-item .timeline-dot { left: 4px !important; right: auto !important; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-panel { padding: 48px 24px; }
}

@media (max-width: 767.98px) {
  .hero-title { font-size: 32px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .stats-row { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-item { padding: 14px 16px; }
  .stat-num { font-size: 22px; }
  .section-title { font-size: 26px; }
  .section-subtitle { font-size: 14px; }
  .plan-card.popular { margin-top: 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-panel h2 { font-size: 26px; }
}

@media (max-width: 520px) {
  .container { padding-left: 14px; padding-right: 14px; }
  .nav-dock { padding: 8px 12px; border-radius: 18px; }
  .nav-logo { font-size: 15px; gap: 8px; }
  .logo-mark { width: 30px; height: 30px; font-size: 13px; }
  .btn-dock { padding: 6px 14px; font-size: 13px; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .stat-icon { width: 36px; height: 36px; font-size: 14px; }
  .stat-num { font-size: 20px; }
  .news-item { flex-direction: column; align-items: flex-start; gap: 10px; }
  .news-date { border-right: none; border-bottom: 2px solid rgba(245, 181, 68, 0.3); padding-right: 0; width: auto; text-align: left; }
  .news-date .day { display: inline; font-size: 18px; }
  .news-date .month { display: inline; margin-left: 4px; }
}

/* roulang page: category1 */
/* ===== CSS Design Variables ===== */
        :root {
            --bg-deep: #0B0E1A;
            --bg-card: #171A2E;
            --bg-card-2: #1F2340;
            --primary: #7C3AED;
            --primary-deep: #4C1D95;
            --primary-light: #A78BFA;
            --accent: #22D3EE;
            --gold: #F5B544;
            --gold-light: #FBBF24;
            --text-main: #E6E8F2;
            --text-muted: #9DA3BC;
            --border: rgba(124, 58, 237, 0.16);
            --border-light: rgba(255, 255, 255, 0.08);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 40px rgba(124, 58, 237, 0.25);
            --shadow-btn: 0 8px 20px rgba(124, 58, 237, 0.35);
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'DIN Alternate', 'Arial Narrow', tabular-nums;
            --spacing-section: 96px;
            --spacing-section-mobile: 56px;
        }

        /* ===== Base Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background-color: var(--bg-deep);
            background-image: radial-gradient(ellipse at 20% 20%, rgba(76, 29, 149, 0.22) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 35%, rgba(124, 58, 237, 0.12) 0%, transparent 45%);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            border-radius: var(--radius-md);
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #fff;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Floating Dock Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 14px 20px 0;
            pointer-events: none;
        }
        .site-nav-wrap {
            max-width: 1000px;
            margin: 0 auto;
            pointer-events: auto;
        }
        .nav-dock {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(15, 18, 37, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-pill);
            padding: 10px 20px 10px 16px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
            min-height: 60px;
        }
        .nav-dock:hover {
            border-color: rgba(124, 58, 237, 0.35);
            box-shadow: 0 10px 40px rgba(124, 58, 237, 0.15);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-main);
            white-space: nowrap;
        }
        .nav-logo:hover {
            color: #fff;
        }
        .logo-mark {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-deep));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            box-shadow: 0 4px 14px rgba(124, 58, 237, 0.4);
            flex-shrink: 0;
        }
        .logo-text {
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .nav-menu {
            display: flex;
            gap: 4px;
            align-items: center;
            margin-left: 24px;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.25s ease;
        }
        .nav-link:hover {
            background: rgba(124, 58, 237, 0.2);
            color: #fff;
        }
        .nav-link.active {
            color: var(--primary-light);
            background: rgba(124, 58, 237, 0.18);
            font-weight: 600;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-dock {
            padding: 8px 20px;
            font-size: 13px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-main);
            width: 38px;
            height: 38px;
            border-radius: 10px;
            font-size: 14px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            background: rgba(124, 58, 237, 0.1);
        }
        @media (max-width: 992px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: calc(100% + 10px);
                left: 50%;
                transform: translateX(-50%);
                background: rgba(15, 18, 37, 0.92);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border: 1px solid var(--border-light);
                border-radius: var(--radius-md);
                padding: 14px;
                width: 260px;
                flex-direction: column;
                gap: 4px;
                margin-left: 0;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.55);
                z-index: 100;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                text-align: center;
                padding: 10px 16px;
            }
            .nav-toggle {
                display: flex;
            }
        }
        @media (max-width: 576px) {
            .site-header {
                padding: 10px 12px 0;
            }
            .nav-dock {
                padding: 8px 14px 8px 12px;
                min-height: 54px;
                border-radius: 20px;
            }
            .logo-text {
                font-size: 16px;
            }
            .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }
            .btn-dock {
                padding: 6px 14px;
                font-size: 12px;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            border-radius: 14px;
            padding: 12px 26px;
            font-weight: 600;
            font-size: 14px;
            border: none;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-deep));
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #8b5cf6, #5b21b6);
            color: #fff;
            box-shadow: 0 10px 30px rgba(124, 58, 237, 0.5);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px) scale(0.98);
            box-shadow: 0 4px 14px rgba(124, 58, 237, 0.3);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--text-main);
        }
        .btn-outline-light:hover {
            border-color: var(--primary);
            background: rgba(124, 58, 237, 0.1);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline-light:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: var(--radius-pill);
        }
        .btn-link {
            color: var(--accent);
            font-weight: 500;
            text-decoration: none;
            padding: 0;
            border: none;
            background: none;
            position: relative;
        }
        .btn-link:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        /* ===== Badge / Tag ===== */
        .badge-cat {
            display: inline-block;
            padding: 4px 12px;
            border: 1px solid var(--accent);
            border-radius: var(--radius-pill);
            color: var(--accent);
            font-size: 12px;
            font-weight: 500;
            background: rgba(34, 211, 238, 0.06);
        }
        .badge-new {
            display: inline-block;
            padding: 3px 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-pill);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .badge-gold {
            display: inline-block;
            padding: 4px 10px;
            background: linear-gradient(135deg, var(--gold-light), #D97706);
            border-radius: 8px;
            color: #1a1206;
            font-size: 12px;
            font-weight: 700;
        }

        /* ===== Cards ===== */
        .card-custom {
            background: linear-gradient(0.5deg, var(--bg-card), var(--bg-card-2));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease-out;
        }
        .card-custom:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card {
            background: linear-gradient(0.5deg, var(--bg-card), var(--bg-card-2));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            height: 100%;
            transition: all 0.25s ease-out;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity 0.25s ease;
        }
        .feature-card:hover {
            border-color: rgba(167, 139, 250, 0.4);
            box-shadow: 0 14px 40px rgba(124, 58, 237, 0.2);
            transform: translateY(-4px);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            margin-bottom: 18px;
            background: linear-gradient(135deg, var(--primary), var(--primary-deep));
            box-shadow: 0 6px 18px rgba(124, 58, 237, 0.3);
        }
        .feature-card:nth-child(2) .feature-icon {
            background: linear-gradient(135deg, var(--accent), #0E7490);
        }
        .feature-card:nth-child(3) .feature-icon {
            background: linear-gradient(135deg, var(--gold), #D97706);
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ===== Category Hero ===== */
        .cat-hero {
            position: relative;
            padding: 170px 0 80px;
            background: linear-gradient(180deg, rgba(11, 14, 26, 0.25) 0%, var(--bg-deep) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            margin-bottom: 0;
        }
        .cat-hero .cat-hero-inner {
            max-width: 780px;
        }
        .cat-hero .badge-cat {
            margin-bottom: 16px;
        }
        .cat-hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            color: #fff;
            margin-bottom: 16px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .cat-hero .lead {
            font-size: 18px;
            color: rgba(230, 232, 242, 0.85);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .cat-hero {
                padding: 140px 0 56px;
            }
            .cat-hero h1 {
                font-size: 36px;
            }
            .cat-hero .lead {
                font-size: 15px;
            }
        }

        /* ===== Section spacing ===== */
        .section-block {
            padding: 60px 0;
        }
        .section-title-wrap {
            margin-bottom: 40px;
        }
        .section-title-wrap .sub-title {
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            display: block;
            margin-bottom: 8px;
        }
        .section-title-wrap h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            position: relative;
            margin-bottom: 10px;
        }
        .section-title-wrap p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 640px;
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 40px 0;
            }
            .section-title-wrap h2 {
                font-size: 26px;
            }
        }

        /* ===== Main content area with sidebar ===== */
        .cat-main-area {
            padding: 64px 0 30px;
        }
        .cat-main-area .row {
            gap: 30px 0;
        }
        .cat-content-left {
            padding-right: 20px;
        }
        .cat-sidebar {
            padding-left: 10px;
        }
        @media (max-width: 992px) {
            .cat-content-left {
                padding-right: 0;
            }
            .cat-sidebar {
                padding-left: 0;
                margin-top: 32px;
            }
        }

        /* ===== Intro block ===== */
        .category-intro {
            background: linear-gradient(0.5deg, var(--bg-card), var(--bg-card-2));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            margin-bottom: 40px;
            position: relative;
            overflow: hidden;
        }
        .category-intro::after {
            content: '✦';
            position: absolute;
            right: 30px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 120px;
            color: rgba(124, 58, 237, 0.08);
            font-family: serif;
        }
        .category-intro h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .category-intro p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.85;
            position: relative;
            z-index: 1;
        }

        /* ===== Feature cards ===== */
        .feature-grid {
            margin-bottom: 48px;
        }
        .feature-grid .feature-card {
            margin-bottom: 20px;
        }

        /* ===== Stats row ===== */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin: 32px 0 24px;
        }
        .stat-item {
            background: rgba(245, 181, 68, 0.06);
            border: 1px solid rgba(245, 181, 68, 0.2);
            border-radius: var(--radius-pill);
            padding: 14px 22px;
            text-align: center;
            transition: all 0.3s ease;
        }
        .stat-item:hover {
            border-color: rgba(245, 181, 68, 0.4);
            background: rgba(245, 181, 68, 0.1);
        }
        .stat-item .stat-num {
            font-family: var(--font-num);
            font-size: 28px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.2;
            display: block;
        }
        .stat-item .stat-label {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 1px;
        }
        @media (max-width: 768px) {
            .stats-strip {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }
            .stat-item {
                padding: 10px 12px;
            }
            .stat-item .stat-num {
                font-size: 20px;
            }
            .stat-item .stat-label {
                font-size: 11px;
            }
        }

        /* ===== Content preview cards ===== */
        .content-preview-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-bottom: 48px;
        }
        .content-card {
            background: linear-gradient(0.5deg, var(--bg-card), var(--bg-card-2));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
        }
        .content-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .content-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }
        .content-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .content-card:hover .card-img-wrap img {
            transform: scale(1.03);
        }
        .content-card .card-img-wrap .badge-cat {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(11, 14, 26, 0.7);
            backdrop-filter: blur(6px);
        }
        .content-card .card-body {
            padding: 20px 22px 24px;
        }
        .content-card .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
            line-height: 1.4;
        }
        .content-card .card-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .content-card .card-body .card-meta i {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .content-preview-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Workflow / Process ===== */
        .process-section {
            background: linear-gradient(0.5deg, rgba(23, 26, 46, 0.6), rgba(31, 35, 64, 0.5));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            margin-bottom: 48px;
        }
        .process-steps {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 24px;
        }
        .process-step {
            flex: 1;
            min-width: 150px;
            position: relative;
            text-align: center;
        }
        .process-step .step-num {
            font-family: var(--font-num);
            font-size: 38px;
            font-weight: 800;
            color: rgba(245, 181, 68, 0.25);
            line-height: 1;
            display: block;
            margin-bottom: 8px;
        }
        .process-step .step-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }
        .process-step .step-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .process-arrow {
            align-self: center;
            color: var(--primary-light);
            font-size: 18px;
            margin-top: 20px;
        }
        @media (max-width: 768px) {
            .process-steps {
                flex-direction: column;
                gap: 16px;
            }
            .process-arrow {
                transform: rotate(90deg);
                margin: 0;
                align-self: center;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            margin-top: 48px;
        }
        .faq-wrap h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 24px;
        }
        .accordion-item-custom {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.25s ease, background 0.25s ease;
        }
        .accordion-item-custom.accordion-open {
            border-color: rgba(167, 139, 250, 0.5);
            background: linear-gradient(0.5deg, #1a1e35, #222648);
        }
        .accordion-item-custom .accordion-header-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            transition: color 0.2s ease;
        }
        .accordion-item-custom .accordion-header-custom:hover {
            color: #fff;
        }
        .accordion-item-custom .accordion-icon {
            font-size: 18px;
            color: var(--primary-light);
            flex-shrink: 0;
            margin-left: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(124, 58, 237, 0.08);
            transition: transform 0.2s ease, background 0.2s ease;
        }
        .accordion-item-custom.accordion-open .accordion-icon {
            transform: rotate(45deg);
            background: rgba(124, 58, 237, 0.18);
        }
        .accordion-item-custom .accordion-body-custom {
            padding: 0 22px 18px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.75;
            display: none;
        }
        .accordion-item-custom.accordion-open .accordion-body-custom {
            display: block;
        }

        /* ===== Sidebar widgets ===== */
        .sidebar-widget {
            background: linear-gradient(0.5deg, var(--bg-card), var(--bg-card-2));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 26px;
            margin-bottom: 24px;
        }
        .sidebar-widget h4 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget h4 i {
            color: var(--gold);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud .tag-item {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(124, 58, 237, 0.08);
            border: 1px solid rgba(124, 58, 237, 0.16);
            border-radius: var(--radius-pill);
            font-size: 12px;
            color: var(--text-muted);
            transition: all 0.2s ease;
        }
        .tag-cloud .tag-item:hover {
            background: rgba(124, 58, 237, 0.18);
            border-color: var(--primary-light);
            color: #fff;
        }
        .sidebar-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-link-list li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .sidebar-link-list li:last-child {
            border-bottom: none;
        }
        .sidebar-link-list a {
            color: var(--text-muted);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.2s ease;
        }
        .sidebar-link-list a i {
            color: var(--primary-light);
            font-size: 12px;
        }
        .sidebar-link-list a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .sidebar-img-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 24px;
        }
        .sidebar-img-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .sidebar-img-card:hover img {
            transform: scale(1.03);
        }
        .sidebar-img-card .img-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px 18px 16px;
            background: linear-gradient(180deg, transparent, rgba(11, 14, 26, 0.9));
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }
        .sidebar-img-card .img-overlay p {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            margin: 0;
            line-height: 1.4;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 50px 0 80px;
        }
        .cta-panel {
            background: linear-gradient(135deg, #2E1065 0%, var(--bg-deep) 100%);
            border: 1px solid var(--primary);
            border-radius: var(--radius-lg);
            padding: 54px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 0 60px rgba(124, 58, 237, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.06);
        }
        .cta-panel::before {
            content: '✦';
            position: absolute;
            top: 20px;
            left: 30px;
            font-size: 36px;
            color: rgba(245, 181, 68, 0.3);
        }
        .cta-panel::after {
            content: '✦◌';
            position: absolute;
            bottom: 20px;
            right: 30px;
            font-size: 28px;
            color: rgba(34, 211, 238, 0.2);
        }
        .cta-panel h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -1px;
        }
        .cta-panel h2 span {
            background: linear-gradient(135deg, var(--gold-light), var(--gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .cta-panel p {
            color: rgba(230, 232, 242, 0.75);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-panel .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-panel .btn-primary {
            padding: 14px 42px;
            font-size: 16px;
            border-radius: var(--radius-pill);
        }
        .cta-panel .btn-outline-light {
            padding: 14px 30px;
            font-size: 15px;
            border-radius: var(--radius-pill);
        }
        @media (max-width: 768px) {
            .cta-panel {
                padding: 40px 24px;
            }
            .cta-panel h2 {
                font-size: 26px;
            }
            .cta-panel p {
                font-size: 14px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #080A14;
            border-top: 1px solid rgba(124, 58, 237, 0.25);
            padding: 60px 0 0;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-top: 12px;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: var(--text-muted);
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer-col ul a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 10px;
        }
        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Responsive helpers ===== */
        @media (max-width: 768px) {
            .section-title-wrap {
                margin-bottom: 24px;
            }
            .cat-main-area {
                padding: 40px 0 20px;
            }
        }

        /* ===== Custom scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-deep);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(124, 58, 237, 0.4);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(124, 58, 237, 0.6);
        }

        /* ===== Focus visibility ===== */
        a:focus-visible,
        button:focus-visible,
        .accordion-header-custom:focus-visible {
            outline: 3px solid rgba(34, 211, 238, 0.5);
            outline-offset: 2px;
        }

/* roulang page: article */
:root {
    --bg-deep: #0B0E1A;
    --bg-card: #171A2E;
    --bg-card-2: #1F2340;
    --primary: #7C3AED;
    --primary-dark: #4C1D95;
    --primary-light: #A78BFA;
    --accent: #22D3EE;
    --gold: #F5B544;
    --text-main: #E6E8F2;
    --text-muted: #9DA3BC;
    --border-muted: rgba(124, 58, 237, 0.16);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-pill: 999px;
    --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
    --shadow-hover: 0 14px 40px rgba(124, 58, 237, 0.25);
    --shadow-btn: 0 8px 20px rgba(124, 58, 237, 0.35);
    --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    font-family: var(--font-cn);
    background: var(--bg-deep);
    color: var(--text-main);
    line-height: 1.7;
    padding-top: 100px;
    -webkit-font-smoothing: antialiased;
}
a {
    color: var(--accent);
    text-decoration: none;
    transition: color .2s ease;
}
a:hover {
    color: #fff;
}
img {
    max-width: 100%;
    height: auto;
}
.container {
    max-width: 1200px;
}
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding-top: 14px;
    pointer-events: none;
}
.site-nav-wrap {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    pointer-events: auto;
}
.nav-dock {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(15, 18, 37, 0.78);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 24px;
    padding: 10px 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-weight: 700;
    font-size: 17px;
    letter-spacing: 0.5px;
    text-decoration: none;
}
.nav-logo:hover {
    color: #fff;
}
.logo-mark {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: linear-gradient(135deg, #7C3AED, #22D3EE);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 15px;
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.45);
}
.nav-menu {
    display: flex;
    gap: 6px;
    align-items: center;
}
.nav-link {
    display: inline-block;
    padding: 8px 16px;
    color: var(--text-muted);
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: background .2s, color .2s;
}
.nav-link:hover {
    background: rgba(124, 58, 237, 0.2);
    color: #fff;
}
.nav-link.active {
    color: var(--accent);
    background: rgba(124, 58, 237, 0.14);
}
.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
}
.btn-dock {
    padding: 8px 20px;
    font-size: 13px;
    border-radius: 999px;
    font-weight: 600;
    border: none;
    background: linear-gradient(135deg, #7C3AED, #4C1D95);
    color: #fff;
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
    transition: all .25s ease;
}
.btn-dock:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(124, 58, 237, 0.55);
    color: #fff;
    background: linear-gradient(135deg, #8B5CF6, #5B21B6);
}
.nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    border-radius: 12px;
    width: 40px;
    height: 40px;
    font-size: 16px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}
.btn {
    border-radius: 14px;
    padding: 12px 26px;
    font-weight: 600;
    font-size: 15px;
    transition: all .25s ease-out;
    border: none;
}
.btn-primary {
    background: linear-gradient(135deg, #7C3AED, #4C1D95);
    box-shadow: var(--shadow-btn);
    color: #fff;
}
.btn-primary:hover {
    background: linear-gradient(135deg, #8B5CF6, #5B21B6);
    box-shadow: 0 12px 32px rgba(124, 58, 237, 0.55);
    transform: translateY(-1px);
    color: #fff;
}
.btn-primary:active {
    transform: translateY(1px);
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
}
.btn-outline-light {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: #fff;
}
.btn-outline-light:hover {
    border-color: var(--primary-light);
    background: rgba(124, 58, 237, 0.1);
    color: #fff;
    transform: translateY(-1px);
}
.btn-sm {
    padding: 8px 20px;
    font-size: 13px;
    border-radius: 14px;
}
.breadcrumb-wrap {
    margin-top: 20px;
    margin-bottom: 20px;
}
.breadcrumb-wrap .container {
    max-width: 1000px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(23, 26, 46, 0.6);
    border: 1px solid var(--border-muted);
    border-radius: 16px;
    padding: 12px 24px;
    margin: 0;
    list-style: none;
    font-size: 13px;
    color: var(--text-muted);
}
.breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
}
.breadcrumb a:hover {
    color: var(--accent);
}
.breadcrumb .sep {
    color: rgba(255, 255, 255, 0.3);
}
.breadcrumb .active {
    color: var(--primary-light);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 240px;
}
.article-main {
    position: relative;
    margin-top: 24px;
    margin-bottom: 80px;
}
.article-header {
    text-align: center;
    max-width: 920px;
    margin: 0 auto 32px;
    padding: 0 20px;
}
.article-header h1 {
    font-size: 38px;
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.5px;
    margin-bottom: 18px;
    color: #fff;
}
.article-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
}
.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.article-meta i {
    color: var(--primary-light);
    font-size: 14px;
}
.article-cover {
    max-width: 920px;
    margin: 0 auto 36px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-muted);
}
.article-cover img {
    width: 100%;
    display: block;
    border-radius: 20px;
}
.article-body-wrap {
    max-width: 820px;
    margin: 0 auto;
    padding: 0 20px;
}
.article-content {
    font-size: 16px;
    line-height: 1.9;
    letter-spacing: 0.01em;
    color: var(--text-main);
}
.article-content p {
    margin-bottom: 1.5em;
}
.article-content h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 36px 0 16px;
    color: #fff;
    line-height: 1.4;
}
.article-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 28px 0 14px;
    color: #fff;
}
.article-content img {
    max-width: 100%;
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-muted);
}
.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: rgba(124, 58, 237, 0.06);
    border-radius: 12px;
    padding: 16px 20px;
    margin: 24px 0;
    color: var(--text-muted);
}
.article-content ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: 1.5em;
}
.article-content ul li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
}
.article-content ul li::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 10px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
}
.article-content a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}
.article-content a:hover {
    color: #fff;
}
.article-not-found {
    text-align: center;
    padding: 80px 20px;
    background: rgba(23, 26, 46, 0.6);
    border: 1px dashed var(--border-muted);
    border-radius: var(--radius-lg);
    margin: 40px auto;
    max-width: 720px;
}
.article-not-found h2 {
    color: #fff;
    font-size: 28px;
    margin-bottom: 16px;
}
.article-not-found p {
    color: var(--text-muted);
    margin-bottom: 24px;
}
.article-footer {
    max-width: 820px;
    margin: 40px auto 0;
    padding: 0 20px;
}
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 32px;
    justify-content: center;
}
.article-tag {
    display: inline-block;
    background: rgba(34, 211, 238, 0.08);
    border: 1px solid rgba(34, 211, 238, 0.35);
    color: var(--accent);
    border-radius: 999px;
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 600;
}
.article-pagination {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    border-top: 1px solid var(--border-muted);
    border-bottom: 1px solid var(--border-muted);
    padding: 24px 0;
    margin-bottom: 32px;
}
.page-prev,
.page-next {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    padding: 10px 18px;
    border-radius: 14px;
    background: rgba(23, 26, 46, 0.6);
    border: 1px solid var(--border-muted);
    transition: all .25s ease;
}
.page-prev:hover,
.page-next:hover {
    color: #fff;
    border-color: var(--primary-light);
    background: rgba(124, 58, 237, 0.15);
}
.page-prev i,
.page-next i {
    color: var(--accent);
    font-size: 13px;
}
.related-section {
    padding: 80px 0;
    background: linear-gradient(180deg, rgba(11, 14, 26, 0) 0%, rgba(23, 26, 46, 0.4) 100%);
}
.section-header {
    text-align: center;
    margin-bottom: 48px;
}
.section-header h2 {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}
.section-header p {
    color: var(--text-muted);
    font-size: 15px;
    max-width: 500px;
    margin: 0 auto;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    display: block;
    background: linear-gradient(180deg, var(--bg-card), var(--bg-card-2));
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    box-shadow: var(--shadow-card);
    transition: all .25s ease-out;
}
.related-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-hover);
    text-decoration: none;
}
.card-cover {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, #1e1b4b, #0B0E1A);
}
.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s ease;
}
.related-card:hover .card-cover img {
    transform: scale(1.03);
}
.card-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(34, 211, 238, 0.15);
    border: 1px solid rgba(34, 211, 238, 0.4);
    color: var(--accent);
    font-size: 11px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    backdrop-filter: blur(4px);
}
.related-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin: 20px 20px 8px;
    line-height: 1.4;
}
.related-card p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0 20px 16px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    margin: 0 20px 20px;
    transition: color .2s;
}
.related-card:hover .card-link {
    color: #fff;
}
.faq-section {
    padding: 80px 0;
}
.faq-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 48px;
    align-items: start;
}
.faq-intro h2 {
    font-size: 30px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}
.faq-intro p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 24px;
}
.faq-contact {
    background: linear-gradient(180deg, var(--bg-card), var(--bg-card-2));
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-md);
    padding: 24px;
}
.faq-contact h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 8px;
}
.faq-contact p {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 16px;
}
.accordion {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.accordion-item {
    background: var(--bg-card);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color .25s, box-shadow .25s;
}
.accordion-item:hover {
    border-color: rgba(167, 139, 250, 0.4);
}
.accordion-button {
    background: transparent;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    padding: 18px 22px;
    box-shadow: none;
    display: flex;
    align-items: center;
    gap: 12px;
}
.accordion-button:not(.collapsed) {
    background: rgba(124, 58, 237, 0.08);
    color: #fff;
    box-shadow: none;
}
.accordion-button::after {
    content: '+';
    font-family: sans-serif;
    background: none;
    width: auto;
    height: auto;
    font-size: 20px;
    font-weight: 400;
    color: var(--accent);
    transition: transform .2s ease;
}
.accordion-button:not(.collapsed)::after {
    content: '×';
    transform: rotate(0deg);
    color: var(--accent);
}
.accordion-body {
    padding: 0 22px 20px;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
    border-top: 1px solid transparent;
}
.cta-section {
    position: relative;
    padding: 96px 0;
    background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(46, 16, 101, 0.92), rgba(11, 14, 26, 0.96));
}
.cta-card {
    position: relative;
    z-index: 2;
    background: linear-gradient(135deg, rgba(46, 16, 101, 0.9), rgba(11, 14, 26, 0.95));
    border: 1px solid var(--primary);
    border-radius: 32px;
    padding: 64px 48px;
    text-align: center;
    box-shadow: 0 0 0 2px rgba(124, 58, 237, 0.2), 0 20px 60px rgba(0, 0, 0, 0.5);
    max-width: 900px;
    margin: 0 auto;
}
.cta-card h2 {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}
.cta-card p {
    color: var(--text-muted);
    font-size: 16px;
    margin-bottom: 32px;
}
.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.site-footer {
    background: #080A14;
    border-top: 1px solid var(--primary);
    padding: 56px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.7;
    max-width: 260px;
}
.footer-col h4 {
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
}
.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-col li {
    margin-bottom: 10px;
}
.footer-col a {
    color: var(--text-muted);
    font-size: 14px;
    text-decoration: none;
    transition: color .2s;
}
.footer-col a:hover {
    color: var(--primary-light);
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--text-muted);
}
.footer-bottom a {
    color: var(--text-muted);
    text-decoration: none;
}
.footer-bottom a:hover {
    color: var(--accent);
}
@media (max-width: 992px) {
    body {
        padding-top: 84px;
    }
    .nav-toggle {
        display: inline-flex;
    }
    .nav-menu {
        display: none;
        position: absolute;
        top: calc(100% + 10px);
        left: 20px;
        right: 20px;
        background: rgba(15, 18, 37, 0.94);
        backdrop-filter: blur(18px);
        border-radius: 16px;
        border: 1px solid rgba(255, 255, 255, 0.1);
        padding: 12px;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    }
    .nav-menu.open {
        display: flex;
    }
    .nav-link {
        padding: 10px 14px;
        width: 100%;
    }
    .nav-right .btn-dock {
        margin-right: 8px;
        font-size: 12px;
        padding: 7px 14px;
    }
    .faq-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .header-title {
        font-size: 34px !important;
    }
}
@media (max-width: 768px) {
    .article-header h1 {
        font-size: 30px;
        line-height: 1.4;
    }
    .article-meta {
        gap: 12px;
        font-size: 12px;
    }
    .article-content {
        font-size: 15px;
        line-height: 1.85;
    }
    .article-content h2 {
        font-size: 22px;
    }
    .article-content h3 {
        font-size: 18px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .cta-card {
        padding: 40px 24px;
        border-radius: 24px;
    }
    .cta-card h2 {
        font-size: 26px;
    }
    .breadcrumb-wrap .breadcrumb {
        flex-wrap: wrap;
    }
}
@media (max-width: 520px) {
    body {
        padding-top: 80px;
    }
    .nav-dock {
        padding: 8px 14px;
        border-radius: 20px;
    }
    .logo-text {
        font-size: 15px;
    }
    .article-header h1 {
        font-size: 26px;
    }
    .article-pagination {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    .page-prev,
    .page-next {
        justify-content: center;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .cta-actions .btn {
        width: 100%;
        margin: 0;
    }
    .breadcrumb .active {
        max-width: 160px;
    }
}