/* roulang page: index */
:root {
  --color-bg-base: #0B0F1A;
  --color-bg-elevated: #111A2E;
  --color-primary: #2E6BFF;
  --color-primary-light: #6B9BFF;
  --color-cyan-accent: #22D3EE;
  --color-accent: #FF8A00;
  --color-text-primary: #E9EEF6;
  --color-text-secondary: #93A4BC;
  --color-text-muted: #5B6880;
  --color-border-glass: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);
  --color-success: #10B981;
  --color-danger: #F43F5E;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-btn: 10px;
  --radius-tag: 999px;
  --shadow-card: 0 10px 30px rgba(2, 6, 16, 0.4);
  --shadow-float: 0 20px 50px rgba(2, 6, 16, 0.5);
  --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-family);
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  line-height: 1.8;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
a { color: var(--color-primary-light); text-decoration: none; transition: color 0.25s ease; }
a:hover { color: var(--color-primary-light); }
button, input, select, textarea { font-family: inherit; }

.container-custom {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== 导航 ===== */
.navbar-glass {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1030;
  background: rgba(11, 15, 26, 0.42);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  padding-top: 12px;
  padding-bottom: 12px;
}

.navbar-glass.scrolled {
  background: rgba(11, 15, 26, 0.94);
  border-bottom-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 24px rgba(2, 6, 16, 0.4);
}

.navbar-glass .navbar-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

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

.navbar-glass .navbar-nav .nav-link {
  color: var(--color-text-secondary);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 18px;
  position: relative;
  transition: color 0.25s ease;
}

.navbar-glass .navbar-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}

.navbar-glass .navbar-nav .nav-link:hover,
.navbar-glass .navbar-nav .nav-link.active {
  color: var(--color-text-primary);
}

.navbar-glass .navbar-nav .nav-link:hover::after,
.navbar-glass .navbar-nav .nav-link.active::after {
  transform: scaleX(1);
}

.navbar-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #2E6BFF, #22D3EE);
  color: #fff !important;
  border: none;
  border-radius: var(--radius-btn);
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 6px 24px rgba(46, 107, 255, 0.35);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.navbar-cta:hover {
  box-shadow: 0 10px 36px rgba(46, 107, 255, 0.5);
  transform: translateY(-2px);
  color: #fff;
}

.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 6px 10px;
}

.navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.25); }

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(233, 238, 246, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    background: #0B0F1A;
    border-radius: 16px;
    padding: 16px 20px;
    margin-top: 12px;
    border: 1px solid var(--color-border-glass);
  }
  .navbar-glass .navbar-nav .nav-link { padding: 12px 8px; font-size: 16px; }
  .navbar-cta { margin-top: 12px; width: 100%; justify-content: center; }
}

/* ===== 按钮 ===== */
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #2E6BFF, #22D3EE);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  padding: 14px 30px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 6px 24px rgba(46, 107, 255, 0.35);
  transition: box-shadow 0.3s ease, transform 0.3s ease, opacity 0.3s ease;
  cursor: pointer;
}

.btn-primary-custom:hover {
  box-shadow: 0 10px 36px rgba(46, 107, 255, 0.5);
  transform: translateY(-2px);
  color: #fff;
}

.btn-primary-custom:disabled {
  opacity: 0.5;
  box-shadow: none;
  transform: none;
}

.btn-secondary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-btn);
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
  cursor: pointer;
}

.btn-secondary-custom:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--color-text-primary);
  transform: translateY(-2px);
}

.btn-text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
  background: none;
  border: none;
  padding: 8px 4px;
  cursor: pointer;
  transition: color 0.3s ease, gap 0.3s ease;
}

.btn-text-link:hover {
  color: var(--color-text-primary);
  gap: 9px;
}

.btn-text-link .fa-arrow-left { transition: transform 0.3s ease; }
.btn-text-link:hover .fa-arrow-left { transform: translateX(-3px); }

/* ===== 玻璃卡片 ===== */
.glass-card {
  background: linear-gradient(160deg, rgba(28, 40, 62, 0.62), rgba(13, 19, 34, 0.48));
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 12px 32px rgba(3, 8, 18, 0.35);
  padding: 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 20px 50px rgba(2, 6, 16, 0.5);
}

.highlight-card {
  position: relative;
  border-top: 2px solid var(--color-accent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 20px 50px rgba(2, 6, 16, 0.5);
}

.highlight-card::before {
  content: "最受欢迎";
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #FF8A00, #FFB347);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 14px;
  border-radius: 0 0 8px 8px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* ===== Hero ===== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: var(--color-bg-base);
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  padding-top: 120px;
  padding-bottom: 80px;
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(11, 15, 26, 0.55);
  z-index: 1;
}

.hero-glow-1 {
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 107, 255, 0.25), transparent 70%);
  top: 10%;
  right: -80px;
  z-index: 0;
  filter: blur(80px);
}

.hero-glow-2 {
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 0, 0.15), transparent 70%);
  bottom: 0%;
  left: 20%;
  z-index: 0;
  filter: blur(100px);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}

.hero-content h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-text-primary);
  margin-bottom: 20px;
}

.hero-content .hero-sub {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 138, 0, 0.12);
  border: 1px solid rgba(255, 138, 0, 0.3);
  color: #FFB347;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-tag);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 48px;
}

.hero-stats .stat-item .stat-num {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-cyan-accent);
  font-variant-numeric: tabular-nums;
}

.hero-stats .stat-item .stat-num.orange { color: var(--color-accent); }

.hero-stats .stat-item .stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

@media (max-width: 768px) {
  .hero-section { background-attachment: scroll; min-height: 84vh; }
  .hero-content h1 { font-size: 32px; }
  .hero-content .hero-sub { font-size: 15px; }
  .hero-stats { gap: 24px; margin-top: 36px; }
}

/* ===== 通用区块 ===== */
.section-block { padding: 96px 0; position: relative; }

.section-block .section-tag {
  display: inline-block;
  background: rgba(255, 138, 0, 0.1);
  border: 1px solid rgba(255, 138, 0, 0.25);
  color: #FFB347;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--radius-tag);
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.section-block h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text-primary);
  margin-bottom: 10px;
}

.section-block .section-sub {
  font-size: 14px;
  color: var(--color-text-secondary);
  max-width: 720px;
}

@media (max-width: 768px) {
  .section-block { padding: 56px 0; }
  .section-block h2 { font-size: 26px; }
}

/* ===== 优惠阶梯 ===== */
.promo-tier-wrap {
  display: flex;
  align-items: stretch;
  gap: 24px;
  flex-wrap: wrap;
}

.promo-tier-card {
  flex: 1;
  min-width: 280px;
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
}

.promo-tier-card.tier-middle {
  flex: 1.1;
  transform: scale(1.02);
  padding-top: 40px;
  padding-bottom: 40px;
}

.tier-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: rgba(46, 107, 255, 0.15);
  color: var(--color-primary-light);
  margin-bottom: 18px;
}

.tier-middle .tier-icon {
  background: linear-gradient(135deg, rgba(255, 138, 0, 0.2), rgba(255, 179, 71, 0.15));
  color: #FFB347;
}

.tier-name { font-size: 18px; font-weight: 600; margin-bottom: 14px; }

.tier-point {
  font-size: 34px;
  font-weight: 700;
  color: var(--color-cyan-accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  margin-bottom: 10px;
}

.tier-point.orange { color: var(--color-accent); }

.tier-desc { font-size: 13px; color: var(--color-text-muted); margin-bottom: 18px; }

.tier-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  flex-grow: 1;
}

.tier-list li {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 7px 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.tier-list li i { color: var(--color-success); margin-top: 4px; font-size: 13px; }

.tier-list li.off i { color: var(--color-text-muted); }

.tier-cta { margin-top: auto; }

@media (max-width: 991.98px) {
  .promo-tier-card, .promo-tier-card.tier-middle { flex: 1 1 300px; transform: none; }
}

/* ===== 套餐对比 ===== */
.table-compare {
  --bs-table-bg: transparent;
  --bs-table-color: var(--color-text-primary);
  --bs-table-border-color: var(--color-border-glass);
  background: linear-gradient(160deg, rgba(28, 40, 62, 0.5), rgba(13, 19, 34, 0.4));
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-glass);
}

.table-compare thead th {
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--color-border-glass);
  padding: 22px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
  vertical-align: middle;
}

.table-compare thead th .plan-price {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-cyan-accent);
  font-variant-numeric: tabular-nums;
  display: block;
  margin-top: 4px;
}

.table-compare tbody td {
  padding: 16px 20px;
  font-size: 14px;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-glass);
  vertical-align: middle;
}

.table-compare tbody tr:nth-child(even) td { background: rgba(255, 255, 255, 0.02); }

.table-compare tbody tr:last-child td { border-bottom: none; }

.table-compare .td-feature { color: var(--color-text-primary); font-weight: 500; }

.table-compare .td-yes { color: var(--color-success); font-size: 15px; }
.table-compare .td-no { color: var(--color-text-muted); font-size: 15px; }

.table-compare tfoot td {
  padding: 20px;
  border-top: 1px solid var(--color-border-glass);
  background: rgba(255, 255, 255, 0.02);
}

.table-responsive-custom {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
}

.comparison-tip {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-top: 20px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.comparison-tip i { color: var(--color-cyan-accent); margin-top: 4px; }

/* ===== 资讯列表 ===== */
.news-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(28, 40, 62, 0.55), rgba(13, 19, 34, 0.42));
  border: 1px solid var(--color-border-glass);
  transition: transform 0.25s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  margin-bottom: 16px;
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
  box-shadow: 0 12px 32px rgba(3, 8, 18, 0.4);
}

.news-thumb {
  width: 120px;
  height: 90px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
}

.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.news-card:hover .news-thumb img {
  transform: scale(1.03);
  opacity: 0.9;
}

.news-thumb .thumb-placeholder {
  font-size: 28px;
  color: var(--color-text-muted);
}

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

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.badge-category {
  display: inline-block;
  background: rgba(46, 107, 255, 0.15);
  border: 1px solid rgba(46, 107, 255, 0.3);
  color: var(--color-primary-light);
  font-size: 12px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: var(--radius-tag);
  line-height: 1.6;
}

.badge-category.cyan {
  background: rgba(34, 211, 238, 0.12);
  border-color: rgba(34, 211, 238, 0.25);
  color: var(--color-cyan-accent);
}

.badge-category.orange {
  background: rgba(255, 138, 0, 0.12);
  border-color: rgba(255, 138, 0, 0.25);
  color: #FFB347;
}

.news-date { font-size: 12px; color: var(--color-text-muted); font-variant-numeric: tabular-nums; }

.news-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 6px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-title a { color: inherit; }
.news-title a:hover { color: var(--color-primary-light); }

.news-summary {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

.news-more-link {
  font-size: 13px;
  color: var(--color-primary-light);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
}

.news-more-link:hover { gap: 7px; }

@media (max-width: 576px) {
  .news-card { flex-direction: column; gap: 12px; }
  .news-thumb { width: 100%; height: 150px; }
}

/* 空状态 */
.news-empty-state {
  text-align: center;
  padding: 48px 24px;
  background: linear-gradient(160deg, rgba(28, 40, 62, 0.5), rgba(13, 19, 34, 0.4));
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-lg);
}

.news-empty-state i {
  font-size: 40px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  display: block;
}

.news-empty-state p { color: var(--color-text-secondary); font-size: 15px; margin-bottom: 4px; }
.news-empty-state span { color: var(--color-text-muted); font-size: 13px; }

/* ===== 限时入口 ===== */
.limited-cta-section {
  position: relative;
  background: var(--color-bg-elevated);
  padding: 72px 0;
  overflow: hidden;
  border-top: 1px solid var(--color-border-glass);
  border-bottom: 1px solid var(--color-border-glass);
}

.limited-glow-left {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 0, 0.18), transparent 70%);
  left: -60px;
  top: -40px;
  filter: blur(80px);
}

.limited-glow-right {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 107, 255, 0.2), transparent 70%);
  right: -40px;
  bottom: -60px;
  filter: blur(90px);
}

.countdown-box {
  display: flex;
  gap: 14px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.countdown-item {
  background: linear-gradient(160deg, rgba(28, 40, 62, 0.7), rgba(13, 19, 34, 0.55));
  border: 1px solid var(--color-border-glass);
  border-radius: 12px;
  padding: 14px 18px;
  text-align: center;
  min-width: 72px;
}

.countdown-item .cd-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-cyan-accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.countdown-item .cd-label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.progress-timer {
  margin-top: 20px;
  max-width: 400px;
}

.progress-timer .progress {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  height: 4px;
}

.progress-timer .progress-bar {
  background: linear-gradient(90deg, #2E6BFF, #22D3EE);
  border-radius: 4px;
}

.progress-timer .timer-note {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 8px;
}

.limited-badge {
  display: inline-block;
  background: linear-gradient(135deg, #FF8A00, #FFB347);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.limited-note { font-size: 12px; color: var(--color-text-muted); margin-top: 16px; }

@media (max-width: 768px) {
  .limited-cta-section { padding: 48px 0; }
  .countdown-item { min-width: 64px; padding: 10px 14px; }
}

/* ===== 表单 ===== */
.form-label-custom {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.form-label-custom .required { color: var(--color-danger); margin-left: 2px; }

.form-control-custom,
.form-select-custom {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-btn);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--color-text-primary);
  width: 100%;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

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

.form-control-custom:focus,
.form-select-custom:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.2);
}

.form-select-custom {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%2393A4BC' stroke-width='1.6' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 22px;
}

.contact-info-item i {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(46, 107, 255, 0.12);
  color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.contact-info-item .ci-label { font-size: 12px; color: var(--color-text-muted); margin-bottom: 2px; }
.contact-info-item .ci-value { font-size: 15px; color: var(--color-text-primary); font-weight: 500; }

@media (max-width: 767.98px) {
  .contact-info-col { margin-bottom: 32px; }
}

/* ===== FAQ ===== */
.accordion-custom .accordion-item {
  background: linear-gradient(160deg, rgba(28, 40, 62, 0.55), rgba(13, 19, 34, 0.42));
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
}

.accordion-custom .accordion-item:first-of-type,
.accordion-custom .accordion-item:last-of-type {
  border-radius: var(--radius-md);
}

.accordion-custom .accordion-button {
  background: transparent;
  color: var(--color-text-primary);
  font-size: 15px;
  font-weight: 600;
  padding: 18px 22px;
  box-shadow: none;
}

.accordion-custom .accordion-button:not(.collapsed) {
  background: rgba(46, 107, 255, 0.06);
  color: var(--color-primary-light);
  box-shadow: none;
}

.accordion-custom .accordion-button::after {
  transition: transform 0.3s ease;
}

.accordion-custom .accordion-body {
  padding: 18px 22px;
  font-size: 14px;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border-glass);
  background: rgba(11, 15, 26, 0.25);
}

/* ===== 页脚 ===== */
.footer {
  background: rgba(11, 15, 26, 0.7);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 64px;
}

.footer h4 { font-size: 16px; font-weight: 600; color: var(--color-text-primary); margin-bottom: 18px; }

.footer .footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 10px;
  display: block;
}

.footer .footer-desc { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

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

.footer ul li { margin-bottom: 8px; }

.footer ul a {
  color: var(--color-text-secondary);
  font-size: 14px;
  transition: color 0.25s ease;
}

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

.footer-contact-item { font-size: 14px; color: var(--color-text-secondary); margin-bottom: 8px; }

.footer-contact-item i { color: var(--color-primary-light); width: 18px; margin-right: 6px; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  margin-top: 48px;
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
}

/* ===== 通用辅助 ===== */
.text-gradient {
  background: linear-gradient(135deg, #6B9BFF, #22D3EE);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-divider { border: none; border-top: 1px solid var(--color-border-glass); margin: 0; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-cyan-accent);
  outline-offset: 2px;
}

/* ===== 响应式 ===== */
@media (max-width: 575.98px) {
  .container-custom { padding-left: 16px; padding-right: 16px; }
  .glass-card { padding: 20px; }
  .hero-content h1 { font-size: 30px; }
  .section-block h2 { font-size: 24px; }
}

/* roulang page: category1 */
:root {
            --color-bg-base: #0B0F1A;
            --color-bg-elevated: #111A2E;
            --color-primary: #2E6BFF;
            --color-primary-light: #6B9BFF;
            --color-cyan-accent: #22D3EE;
            --color-accent: #FF8A00;
            --color-text-primary: #E9EEF6;
            --color-text-secondary: #93A4BC;
            --color-text-muted: #5B6880;
            --color-border-glass: rgba(255, 255, 255, 0.08);
            --color-border-strong: rgba(255, 255, 255, 0.16);
            --color-success: #10B981;
            --color-danger: #F43F5E;
            --radius-lg: 20px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 10px 30px rgba(2, 6, 16, 0.4);
            --shadow-lifted: 0 20px 50px rgba(2, 6, 16, 0.5);
            --glass-bg: linear-gradient(160deg, rgba(28, 40, 62, 0.62), rgba(13, 19, 34, 0.48));
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--color-bg-base);
            color: var(--color-text-primary);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color .22s ease;
        }
        a:hover {
            color: var(--color-cyan-accent);
        }
        ul {
            list-style: none;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

        /* ===== Navigation ===== */
        .navbar-glass {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(11, 15, 26, 0.42);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 12px 0;
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .navbar-glass.scrolled {
            background: rgba(11, 15, 26, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.1);
            box-shadow: 0 8px 24px rgba(2, 6, 16, 0.4);
        }
        .navbar-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: .5px;
            white-space: nowrap;
            padding: 0;
            line-height: 1.4;
        }
        .navbar-brand:hover {
            color: var(--color-cyan-accent);
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 6px 10px;
            width: 44px;
            height: 38px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.25);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(233,238,246,0.88)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .navbar-nav {
            gap: 4px;
        }
        .navbar .nav-link {
            color: var(--color-text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            position: relative;
            transition: color .22s ease;
        }
        .navbar .nav-link::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-cyan-accent));
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform .25s ease;
        }
        .navbar .nav-link:hover {
            color: var(--color-text-primary);
        }
        .navbar .nav-link:hover::after {
            transform: scaleX(1);
        }
        .navbar .nav-link.active {
            color: var(--color-text-primary);
        }
        .navbar .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, #2E6BFF, #22D3EE);
            box-shadow: 0 4px 16px rgba(46, 107, 255, 0.3);
            transition: all .25s ease;
            white-space: nowrap;
            border: none;
        }
        .navbar-cta:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(46, 107, 255, 0.45);
        }
        @media (max-width: 991.98px) {
            .navbar-collapse {
                flex-basis: 100%;
                background: rgba(11, 15, 26, 0.98);
                border-top: 1px solid var(--color-border-glass);
                margin-top: 12px;
                padding: 16px 0 10px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .navbar-nav {
                margin-right: 0 !important;
                margin-left: 0 !important;
                gap: 2px;
            }
            .navbar .nav-link {
                padding: 12px 14px;
                font-size: 16px;
                border-radius: 8px;
            }
            .navbar .nav-link::after {
                display: none;
            }
            .navbar .nav-link.active {
                background: rgba(46, 107, 255, 0.12);
                color: var(--color-cyan-accent);
            }
            .navbar-cta {
                margin-top: 12px;
                width: 100%;
                height: 44px;
            }
        }

        /* ===== Buttons ===== */
        .btn-main,
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn-main {
            color: #fff;
            background: linear-gradient(135deg, #2E6BFF, #22D3EE);
            box-shadow: 0 6px 24px rgba(46, 107, 255, 0.35);
        }
        .btn-main:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 36px rgba(46, 107, 255, 0.5);
        }
        .btn-ghost {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.18);
        }
        .btn-ghost:hover {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }
        .btn-main:focus-visible,
        .btn-ghost:focus-visible,
        .navbar-cta:focus-visible {
            outline: 2px solid var(--color-cyan-accent);
            outline-offset: 3px;
        }

        /* ===== Glass Card ===== */
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(14px) saturate(150%);
            -webkit-backdrop-filter: blur(14px) saturate(150%);
            border: 1px solid var(--color-border-glass);
            border-radius: var(--radius-md);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 12px 32px rgba(3, 8, 18, 0.35);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 150px 0 100px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat var(--color-bg-base);
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(11, 15, 26, 0.74);
        }
        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(circle at 22% 35%, rgba(46, 107, 255, 0.2), transparent 55%),
                radial-gradient(circle at 78% 68%, rgba(255, 138, 0, 0.14), transparent 50%);
            pointer-events: none;
        }
        .page-hero .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
        }
        .hero-breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 24px;
        }
        .hero-breadcrumb a {
            color: var(--color-text-secondary);
        }
        .hero-breadcrumb .current {
            color: var(--color-text-primary);
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }
        .hero-lead {
            font-size: 17px;
            color: var(--color-text-secondary);
            max-width: 560px;
            margin: 0 auto 34px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 130px 0 68px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .hero-lead {
                font-size: 15px;
            }
        }

        /* ===== Section Common ===== */
        .section-pad {
            padding: 96px 0;
        }
        .section-head {
            text-align: center;
            max-width: 660px;
            margin: 0 auto 48px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: .5px;
        }
        .section-head p {
            color: var(--color-text-secondary);
            font-size: 15px;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--color-accent);
            border: 1px solid rgba(255, 138, 0, 0.35);
            background: rgba(255, 138, 0, 0.08);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        @media (max-width: 768px) {
            .section-pad {
                padding: 56px 0;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-head h2 {
                font-size: 26px;
            }
        }

        /* ===== Intro Section ===== */
        .intro-section {
            padding: 48px 0 0;
        }
        .intro-panel {
            padding: 48px;
            border-radius: var(--radius-lg);
        }
        .intro-panel .intro-text {
            padding-right: 32px;
        }
        .intro-panel h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 16px;
        }
        .intro-panel p {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.85;
        }
        .intro-img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-glass);
            box-shadow: var(--shadow-card);
        }
        @media (max-width: 767px) {
            .intro-panel {
                padding: 28px 22px;
            }
            .intro-panel .intro-text {
                padding-right: 0;
                padding-bottom: 10px;
            }
            .intro-panel h2 {
                font-size: 23px;
            }
            .intro-img {
                height: 200px;
            }
        }

        /* ===== Guide Cards ===== */
        .guide-cards-section {
            padding: 96px 0;
        }
        .info-card {
            padding: 32px 30px;
            height: 100%;
            border-radius: var(--radius-lg);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
            display: flex;
            flex-direction: column;
        }
        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lifted);
            border-color: var(--color-border-strong);
        }
        .info-card-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(46, 107, 255, 0.25), rgba(34, 211, 238, 0.14));
            border: 1px solid rgba(46, 107, 255, 0.3);
            color: var(--color-cyan-accent);
            font-size: 20px;
            margin-bottom: 20px;
            flex-shrink: 0;
        }
        .info-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--color-text-primary);
        }
        .info-card p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        @media (max-width: 991.98px) {
            .guide-cards-section .col-md-6 {
                margin-bottom: 24px;
            }
        }
        @media (max-width: 767px) {
            .guide-cards-section {
                padding: 56px 0;
            }
            .info-card {
                padding: 24px 20px;
            }
            .info-card-icon {
                width: 44px;
                height: 44px;
                font-size: 17px;
                margin-bottom: 16px;
            }
            .info-card h3 {
                font-size: 17px;
            }
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 0 0 96px;
            background: linear-gradient(180deg, transparent, rgba(17, 26, 46, 0.35));
        }
        .faq-section .container-custom.narrow {
            max-width: 880px;
        }
        .accordion {
            --bs-accordion-border-color: var(--color-border-glass);
            --bs-accordion-bg: transparent;
            --bs-accordion-border-radius: var(--radius-md);
            --bs-accordion-transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
        }
        .accordion-item {
            background: var(--glass-bg);
            backdrop-filter: blur(14px) saturate(150%);
            -webkit-backdrop-filter: blur(14px) saturate(150%);
            border: 1px solid var(--color-border-glass);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 8px 24px rgba(3, 8, 18, 0.25);
            transition: border-color .25s ease, box-shadow .25s ease;
        }
        .accordion-item:hover {
            border-color: var(--color-border-strong);
        }
        .accordion-button {
            background: transparent !important;
            color: var(--color-text-primary) !important;
            font-weight: 600;
            font-size: 16px;
            padding: 20px 24px;
            box-shadow: none !important;
            border-radius: var(--radius-md) !important;
            gap: 12px;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(255, 255, 255, 0.04) !important;
            color: var(--color-primary-light) !important;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.16) !important;
        }
        .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f078";
            color: var(--color-cyan-accent);
            font-size: 13px;
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .accordion-button:not(.collapsed)::after {
            content: "\f077";
            transform: none;
        }
        .accordion-body {
            color: var(--color-text-secondary);
            line-height: 1.85;
            padding: 0 24px 22px;
            font-size: 14px;
        }
        @media (max-width: 767px) {
            .faq-section {
                padding: 0 0 56px;
            }
            .accordion-button {
                font-size: 15px;
                padding: 18px 18px;
            }
            .accordion-body {
                padding: 0 18px 20px;
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 0 0 96px;
        }
        .cta-banner {
            padding: 64px 48px;
            text-align: center;
            border-radius: var(--radius-lg);
            position: relative;
            overflow: hidden;
            background:
                radial-gradient(circle at 15% 50%, rgba(255, 138, 0, 0.1), transparent 55%),
                radial-gradient(circle at 85% 30%, rgba(46, 107, 255, 0.18), transparent 55%),
                linear-gradient(160deg, rgba(28, 40, 62, 0.68), rgba(13, 19, 34, 0.55));
        }
        .cta-banner h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-text-primary);
        }
        .cta-banner p {
            color: var(--color-text-secondary);
            font-size: 15px;
            max-width: 520px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }
        .cta-banner .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 767px) {
            .cta-section {
                padding: 0 0 56px;
            }
            .cta-banner {
                padding: 40px 22px;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: rgba(11, 15, 26, 0.7);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
            backdrop-filter: blur(8px);
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-primary);
            display: block;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }
        .footer-desc {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
            margin-bottom: 0;
        }
        .footer h4 {
            font-size: 15px;
            color: var(--color-text-primary);
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer ul {
            padding-left: 0;
            margin-bottom: 0;
        }
        .footer ul li {
            margin-bottom: 6px;
        }
        .footer ul a {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 2;
            transition: color .2s ease;
        }
        .footer ul a:hover {
            color: var(--color-primary-light);
        }
        .footer-contact-item {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 2;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact-item i {
            color: var(--color-cyan-accent);
            width: 16px;
            font-size: 13px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 48px;
            padding: 20px 0;
            text-align: center;
            color: var(--color-text-muted);
            font-size: 13px;
        }
        @media (max-width: 767px) {
            .footer {
                padding: 48px 0 0;
            }
            .footer-bottom {
                margin-top: 32px;
            }
        }

        /* ===== Media ===== */
        @media (max-width: 576px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn-main,
            .hero-actions .btn-ghost {
                width: 100%;
                max-width: 320px;
            }
            .cta-banner .cta-actions .btn-main,
            .cta-banner .cta-actions .btn-ghost {
                width: 100%;
                max-width: 320px;
            }
        }

/* roulang page: article */
:root {
  --color-bg-base: #0b0f1a;
  --color-bg-elevated: #111a2e;
  --color-primary: #2e6bff;
  --color-primary-light: #6b9bff;
  --color-cyan-accent: #22d3ee;
  --color-accent: #ff8a00;
  --color-text-primary: #e9eef6;
  --color-text-secondary: #93a4bc;
  --color-text-muted: #5b6880;
  --color-border-glass: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);
  --color-success: #10b981;
  --color-danger: #f43f5e;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-card: 0 10px 30px rgba(2, 6, 16, 0.4);
  --shadow-lift: 0 20px 50px rgba(2, 6, 16, 0.5);
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --transition: 0.25s ease;
}

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

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.8;
  background: var(--color-bg-base);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}

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

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

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

ul, ol {
  margin: 0;
  padding: 0;
}

.container-custom {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ 导航 ============ */
.navbar-glass {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1030;
  background: rgba(11, 15, 26, 0.42);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 14px 0;
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.navbar-glass.scrolled {
  background: rgba(11, 15, 26, 0.94);
  border-bottom-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 24px rgba(2, 6, 16, 0.4);
}

.navbar-brand {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
  color: var(--color-text-primary);
  background: linear-gradient(135deg, #e9eef6, #6b9bff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: opacity 0.25s ease;
}

.navbar-brand:hover {
  opacity: 0.85;
  color: var(--color-text-primary);
}

.navbar-nav .nav-link {
  color: var(--color-text-secondary);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 18px;
  position: relative;
  transition: color 0.25s ease;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.25s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--color-text-primary);
}

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

.navbar-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 20px;
  border-radius: 10px;
  background: linear-gradient(135deg, #2e6bff, #22d3ee);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(46, 107, 255, 0.3);
  transition: all 0.25s ease;
  white-space: nowrap;
  border: none;
}

.navbar-cta:hover {
  color: #fff;
  box-shadow: 0 8px 28px rgba(46, 107, 255, 0.45);
  transform: translateY(-1px);
}

.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 10px;
  background: transparent;
  border-radius: 8px;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.25);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(233,238,246,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

@media (max-width: 991px) {
  .navbar-collapse {
    background: var(--color-bg-base);
    margin-top: 12px;
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--color-border-glass);
    box-shadow: var(--shadow-lift);
  }
  .navbar-nav .nav-link {
    padding: 12px 8px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }
  .navbar-nav .nav-link::after {
    display: none;
  }
  .navbar-cta {
    margin-top: 16px;
    width: 100%;
  }
}

/* ============ 按钮 ============ */
.btn-primary-glow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, #2e6bff, #22d3ee);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 6px 24px rgba(46, 107, 255, 0.35);
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn-primary-glow:hover {
  color: #fff;
  box-shadow: 0 10px 36px rgba(46, 107, 255, 0.5);
  transform: translateY(-2px);
}

.btn-secondary-glass {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-primary);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn-secondary-glass:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--color-text-primary);
  transform: translateY(-1px);
}

/* ============ 文章 Hero ============ */
.article-hero {
  position: relative;
  padding: 170px 0 60px;
  min-height: 400px;
  display: flex;
  align-items: center;
  background: var(--color-bg-base);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.55;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 15, 26, 0.82) 0%, rgba(11, 15, 26, 0.65) 60%, var(--color-bg-base) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
}

.breadcrumb-custom {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

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

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

.breadcrumb-custom .sep {
  color: var(--color-text-muted);
  margin: 0 2px;
}

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

.article-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 18px;
  max-width: 800px;
  color: var(--color-text-primary);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 8px;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.meta-item i {
  color: var(--color-primary-light);
  font-size: 14px;
}

.meta-item .cat-link {
  color: var(--color-cyan-accent);
  font-weight: 500;
}

@media (max-width: 767px) {
  .article-hero {
    padding: 140px 0 44px;
    min-height: 320px;
  }
  .article-hero h1 {
    font-size: 30px;
  }
  .article-meta {
    gap: 12px;
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ============ 正文区 ============ */
.article-main {
  padding: 56px 0 80px;
}

.article-container {
  max-width: 780px;
  margin: 0 auto;
}

.article-content {
  background: linear-gradient(160deg, rgba(28, 40, 62, 0.45), rgba(13, 19, 34, 0.3));
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-lg);
  padding: 44px 48px;
  box-shadow: var(--shadow-card);
}

.article-content h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  margin: 40px 0 16px;
  color: var(--color-text-primary);
}

.article-content h2:first-child {
  margin-top: 0;
}

.article-content h3 {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  margin: 32px 0 14px;
  color: var(--color-text-primary);
}

.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--color-text-primary);
}

.article-content p {
  color: var(--color-text-secondary);
  margin-bottom: 18px;
  line-height: 1.85;
}

.article-content a {
  color: var(--color-primary-light);
  border-bottom: 1px solid rgba(107, 155, 255, 0.3);
  transition: all 0.2s ease;
}

.article-content a:hover {
  color: var(--color-cyan-accent);
  border-bottom-color: var(--color-cyan-accent);
}

.article-content ul,
.article-content ol {
  margin: 0 0 20px 22px;
  color: var(--color-text-secondary);
}

.article-content li {
  margin-bottom: 8px;
}

.article-content ul li::marker {
  color: var(--color-primary);
}

.article-content blockquote {
  border-left: 3px solid var(--color-primary);
  background: rgba(46, 107, 255, 0.08);
  padding: 16px 22px;
  border-radius: 0 12px 12px 0;
  margin: 24px 0;
  color: var(--color-text-primary);
  font-style: normal;
}

.article-content blockquote p {
  margin-bottom: 0;
  color: var(--color-text-primary);
}

.article-content img {
  border-radius: 14px;
  margin: 24px 0;
  box-shadow: var(--shadow-card);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.article-content table th,
.article-content table td {
  border: 1px solid var(--color-border-strong);
  padding: 12px 16px;
  color: var(--color-text-secondary);
}

.article-content table th {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  font-weight: 600;
}

.article-content code {
  background: rgba(46, 107, 255, 0.1);
  border: 1px solid rgba(46, 107, 255, 0.2);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 13px;
  color: var(--color-cyan-accent);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.article-content pre {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-glass);
  border-radius: 12px;
  padding: 20px;
  margin: 24px 0;
  overflow-x: auto;
}

.article-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--color-border-glass);
  margin: 32px 0;
}

.article-back {
  margin-top: 36px;
  text-align: center;
}

.article-back .btn-secondary-glass i {
  font-size: 13px;
  transition: transform 0.25s ease;
}

.article-back .btn-secondary-glass:hover i {
  transform: translateX(-4px);
}

/* ============ 空态 ============ */
.article-empty {
  text-align: center;
  padding: 80px 40px;
  background: linear-gradient(160deg, rgba(28, 40, 62, 0.45), rgba(13, 19, 34, 0.3));
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
}

.article-empty i {
  font-size: 64px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  display: block;
}

.article-empty h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text-primary);
}

.article-empty p {
  color: var(--color-text-secondary);
  margin-bottom: 28px;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

.empty-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 767px) {
  .article-container {
    padding: 0;
  }
  .article-content {
    padding: 28px 20px;
    border-radius: var(--radius-md);
  }
  .article-content h2 {
    font-size: 22px;
  }
  .article-content h3 {
    font-size: 19px;
  }
  .article-empty {
    padding: 60px 24px;
  }
  .empty-actions {
    flex-direction: column;
    align-items: center;
  }
}

/* ============ 相关推荐 ============ */
.related-section {
  padding: 72px 0 84px;
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border-glass);
}

.section-head {
  text-align: center;
  margin-bottom: 44px;
}

.section-tag {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(255, 138, 0, 0.1);
  border: 1px solid rgba(255, 138, 0, 0.25);
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.section-head p {
  color: var(--color-text-secondary);
  font-size: 14px;
}

.related-card {
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, rgba(28, 40, 62, 0.62), rgba(13, 19, 34, 0.48));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-border-glass);
  border-radius: 16px;
  padding: 16px;
  height: 100%;
  transition: all 0.25s ease;
  color: var(--color-text-primary);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
}

.related-thumb {
  width: 120px;
  height: 90px;
  min-width: 120px;
  border-radius: 12px;
  overflow: hidden;
  margin-right: 16px;
}

.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease, opacity 0.3s ease;
}

.related-card:hover .related-thumb img {
  transform: scale(1.05);
  opacity: 0.9;
}

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

.related-info .badge-cat {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 8px;
}

.badge-blue {
  background: rgba(46, 107, 255, 0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(46, 107, 255, 0.3);
}

.badge-cyan {
  background: rgba(34, 211, 238, 0.12);
  color: var(--color-cyan-accent);
  border: 1px solid rgba(34, 211, 238, 0.25);
}

.badge-orange {
  background: rgba(255, 138, 0, 0.12);
  color: var(--color-accent);
  border: 1px solid rgba(255, 138, 0, 0.25);
}

.related-info h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 6px;
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-info p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-meta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 8px;
}

.back-link {
  text-align: center;
  margin-top: 44px;
}

.back-link a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all 0.25s ease;
}

.back-link a:hover {
  color: var(--color-primary-light);
}

.back-link a i {
  transition: transform 0.25s ease;
}

.back-link a:hover i {
  transform: translateX(-4px);
}

@media (max-width: 575px) {
  .related-section {
    padding: 56px 0 64px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .related-card {
    padding: 12px;
  }
  .related-thumb {
    width: 96px;
    height: 72px;
    min-width: 96px;
    margin-right: 12px;
  }
  .related-info h3 {
    font-size: 15px;
  }
  .related-info p {
    -webkit-line-clamp: 2;
    font-size: 12px;
  }
}

/* ============ 页脚 ============ */
.footer {
  background: rgba(11, 15, 26, 0.7);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 60px;
  padding-bottom: 0;
}

.footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  display: block;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 0;
  max-width: 320px;
}

.footer h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 16px;
}

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

.footer ul li {
  margin-bottom: 8px;
}

.footer ul li a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

.footer ul li a:hover {
  color: var(--color-primary-light);
}

.footer-contact-item {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact-item i {
  color: var(--color-primary-light);
  font-size: 13px;
  width: 16px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid var(--color-border-glass);
  margin-top: 44px;
  padding: 16px 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
}

.footer-bottom .container-custom {
  padding: 0 24px;
}

@media (max-width: 767px) {
  .footer {
    padding-top: 44px;
  }
  .footer-brand {
    font-size: 18px;
  }
  .footer h4 {
    margin-top: 16px;
  }
  .footer-bottom {
    margin-top: 28px;
    padding: 14px 0;
  }
}

/* ============ 通用工具 ============ */
.text-gradient {
  background: linear-gradient(135deg, #6b9bff, #22d3ee);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-divider {
  border: none;
  border-top: 1px solid var(--color-border-glass);
  margin: 0;
}

@media (max-width: 576px) {
  .container-custom {
    padding: 0 16px;
  }
}

/* roulang page: category2 */
:root {
      --color-bg-base: #0B0F1A;
      --color-bg-elevated: #111A2E;
      --color-primary: #2E6BFF;
      --color-primary-light: #6B9BFF;
      --color-cyan-accent: #22D3EE;
      --color-accent: #FF8A00;
      --color-text-primary: #E9EEF6;
      --color-text-secondary: #93A4BC;
      --color-text-muted: #5B6880;
      --color-border-glass: rgba(255, 255, 255, 0.08);
      --color-border-strong: rgba(255, 255, 255, 0.16);
      --color-success: #10B981;
      --color-danger: #F43F5E;
      --radius-lg: 20px;
      --radius-md: 16px;
      --radius-sm: 10px;
      --shadow-card: 0 10px 30px rgba(2, 6, 16, 0.4);
      --shadow-float: 0 20px 50px rgba(2, 6, 16, 0.5);
      --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font-family);
      background-color: var(--color-bg-base);
      color: var(--color-text-primary);
      font-size: 15px;
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
      margin: 0;
      line-height: 1.35;
      font-weight: 700;
    }

    p {
      margin: 0;
    }

    a {
      text-decoration: none;
      color: var(--color-primary-light);
      transition: color 0.25s ease;
    }

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

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

    ul {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .container-custom {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding-right: 24px;
      padding-left: 24px;
    }

    /* ── 导航 ── */
    .navbar-glass {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1030;
      background: rgba(11, 15, 26, 0.42);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding: 14px 0;
      transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .navbar-glass.nav-scrolled {
      background: rgba(11, 15, 26, 0.94);
      border-bottom-color: rgba(255, 255, 255, 0.1);
      box-shadow: 0 8px 24px rgba(2, 6, 16, 0.4);
    }

    .navbar-brand {
      font-size: 20px;
      font-weight: 800;
      color: var(--color-text-primary);
      letter-spacing: 0.5px;
      white-space: nowrap;
      transition: color 0.25s ease;
    }

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

    .navbar-glass .navbar-nav .nav-link {
      color: var(--color-text-secondary);
      font-size: 15px;
      font-weight: 500;
      padding: 8px 16px;
      position: relative;
      transition: color 0.25s ease;
    }

    .navbar-glass .navbar-nav .nav-link::after {
      content: "";
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 2px;
      height: 2px;
      border-radius: 2px;
      background: linear-gradient(90deg, var(--color-primary), var(--color-cyan-accent));
      opacity: 0;
      transform: scaleX(0.4);
      transition: opacity 0.25s ease, transform 0.25s ease;
    }

    .navbar-glass .navbar-nav .nav-link:hover,
    .navbar-glass .navbar-nav .nav-link.active {
      color: var(--color-text-primary);
    }

    .navbar-glass .navbar-nav .nav-link:hover::after,
    .navbar-glass .navbar-nav .nav-link.active::after {
      opacity: 1;
      transform: scaleX(1);
    }

    .navbar-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 40px;
      padding: 0 20px;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, var(--color-primary), var(--color-cyan-accent));
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 6px 24px rgba(46, 107, 255, 0.35);
      transition: box-shadow 0.3s ease, transform 0.3s ease;
      white-space: nowrap;
    }

    .navbar-cta:hover {
      color: #fff;
      box-shadow: 0 10px 36px rgba(46, 107, 255, 0.5);
      transform: translateY(-2px);
    }

    .navbar-toggler {
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.04);
      border-radius: 8px;
      padding: 6px 10px;
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.25);
      outline: none;
    }

    .navbar-toggler-icon {
      width: 20px;
      height: 20px;
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23E9EEF6' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    /* ── 按钮 ── */
    .btn {
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      padding: 12px 28px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 0;
      transition: all 0.3s ease;
    }

    .btn:focus {
      box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.25);
      outline: none;
    }

    .btn-primary {
      background: linear-gradient(135deg, #2E6BFF, #22D3EE);
      color: #fff;
      box-shadow: 0 6px 24px rgba(46, 107, 255, 0.35);
    }

    .btn-primary:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 10px 36px rgba(46, 107, 255, 0.5);
    }

    .btn-ghost {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.18);
      color: var(--color-text-primary);
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.09);
      border-color: rgba(255, 255, 255, 0.3);
      color: var(--color-text-primary);
      transform: translateY(-2px);
    }

    .btn-sm {
      height: 40px;
      padding: 0 20px;
      font-size: 14px;
    }

    /* ── Hero ── */
    .page-hero {
      position: relative;
      padding: 160px 0 80px;
      background:
        linear-gradient(rgba(11, 15, 26, 0.65), rgba(11, 15, 26, 0.82)),
        url("/assets/images/backpic/back-1.png") center / cover no-repeat;
      border-bottom: 1px solid var(--color-border-glass);
      overflow: hidden;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      width: 340px;
      height: 340px;
      background: rgba(46, 107, 255, 0.18);
      border-radius: 50%;
      filter: blur(120px);
      top: 40px;
      right: 60px;
      pointer-events: none;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      width: 240px;
      height: 240px;
      background: rgba(255, 138, 0, 0.12);
      border-radius: 50%;
      filter: blur(120px);
      bottom: 20px;
      left: 20px;
      pointer-events: none;
    }

    .hero-tag {
      display: inline-block;
      padding: 6px 14px;
      border-radius: 999px;
      border: 1px solid rgba(34, 211, 238, 0.35);
      color: var(--color-cyan-accent);
      font-size: 13px;
      letter-spacing: 1px;
      background: rgba(34, 211, 238, 0.08);
      margin-bottom: 18px;
    }

    .page-hero h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      max-width: 720px;
    }

    .hero-desc {
      font-size: 15px;
      color: var(--color-text-secondary);
      max-width: 600px;
      margin-bottom: 28px;
    }

    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
    }

    .hero-img-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--color-border-glass);
      box-shadow: var(--shadow-float);
    }

    .hero-img-wrap img {
      width: 100%;
      display: block;
      object-fit: cover;
    }

    /* ── 通用区块 ── */
    .section-pad {
      padding: 96px 0;
    }

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

    .section-tag {
      display: inline-block;
      padding: 5px 14px;
      border: 1px solid rgba(255, 138, 0, 0.35);
      color: var(--color-accent);
      border-radius: 999px;
      font-size: 12px;
      letter-spacing: 1px;
      background: rgba(255, 138, 0, 0.08);
      margin-bottom: 14px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--color-text-primary);
      margin-bottom: 16px;
    }

    .section-sub {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.7;
    }

    /* ── 步骤区 ── */
    .steps-section {
      background: var(--color-bg-elevated);
    }

    .step-card-wrap {
      position: relative;
    }

    .step-card-wrap:not(:last-child)::after {
      content: "";
      position: absolute;
      top: 60px;
      right: -12px;
      width: 24px;
      height: 1px;
      background: linear-gradient(90deg, var(--color-cyan-accent), transparent);
      z-index: 1;
    }

    .step-card {
      height: 100%;
      padding: 30px 24px;
      border-radius: var(--radius-md);
      background: linear-gradient(160deg, rgba(28, 40, 62, 0.62), rgba(13, 19, 34, 0.48));
      border: 1px solid var(--color-border-glass);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 12px 32px rgba(3, 8, 18, 0.35);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .step-card:hover {
      transform: translateY(-4px);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 20px 50px rgba(2, 6, 16, 0.5);
    }

    .step-num {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, rgba(46, 107, 255, 0.25), rgba(34, 211, 238, 0.2));
      border: 1px solid rgba(34, 211, 238, 0.3);
      color: var(--color-cyan-accent);
      font-size: 20px;
      font-weight: 800;
      font-variant-numeric: tabular-nums;
      margin-bottom: 18px;
    }

    .step-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
    }

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

    /* ── 注意事项 ── */
    .notice-card {
      max-width: 840px;
      margin: 0 auto;
      padding: 40px 36px;
      border-radius: var(--radius-lg);
      background: linear-gradient(160deg, rgba(28, 40, 62, 0.62), rgba(13, 19, 34, 0.48));
      border: 1px solid var(--color-border-glass);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 12px 32px rgba(3, 8, 18, 0.35);
    }

    .notice-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 12px 0;
      font-size: 15px;
      color: var(--color-text-secondary);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .notice-list li:last-child {
      border-bottom: 0;
    }

    .notice-list i {
      color: var(--color-success);
      font-size: 18px;
      margin-top: 4px;
      flex-shrink: 0;
    }

    /* ── FAQ 手风琴 ── */
    .faq-section {
      background: var(--color-bg-elevated);
    }

    .faq-wrap {
      max-width: 820px;
      margin: 0 auto;
    }

    .accordion-item {
      background: linear-gradient(160deg, rgba(28, 40, 62, 0.55), rgba(13, 19, 34, 0.45));
      border: 1px solid var(--color-border-glass);
      border-radius: var(--radius-md) !important;
      margin-bottom: 16px;
      overflow: hidden;
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 8px 24px rgba(2, 6, 16, 0.25);
    }

    .accordion-button {
      background: transparent;
      color: var(--color-text-primary);
      font-size: 16px;
      font-weight: 600;
      padding: 18px 24px;
      box-shadow: none;
      font-family: var(--font-family);
    }

    .accordion-button:not(.collapsed) {
      background: rgba(46, 107, 255, 0.08);
      color: var(--color-text-primary);
      box-shadow: none;
    }

    .accordion-button:focus {
      box-shadow: none;
      border-color: transparent;
    }

    .accordion-button::after {
      width: 18px;
      height: 18px;
      background-size: 18px;
      filter: invert(1) brightness(2);
      opacity: 0.7;
    }

    .accordion-body {
      padding: 0 24px 20px;
      color: var(--color-text-secondary);
      font-size: 14px;
      line-height: 1.75;
    }

    /* ── 站内链接卡片 ── */
    .page-link-card {
      height: 100%;
      padding: 28px;
      text-align: center;
      border-radius: var(--radius-lg);
      background: linear-gradient(160deg, rgba(28, 40, 62, 0.62), rgba(13, 19, 34, 0.48));
      border: 1px solid var(--color-border-glass);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 12px 32px rgba(3, 8, 18, 0.35);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .page-link-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 50px rgba(2, 6, 16, 0.5);
    }

    .page-link-card img {
      width: 100%;
      height: 150px;
      object-fit: cover;
      border-radius: 12px;
      margin-bottom: 18px;
      border: 1px solid var(--color-border-glass);
    }

    .page-link-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .page-link-card p {
      font-size: 14px;
      color: var(--color-text-secondary);
      margin-bottom: 18px;
    }

    /* ── 页脚 ── */
    .footer {
      background: rgba(11, 15, 26, 0.7);
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 64px 0 0;
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }

    .footer-brand {
      display: block;
      font-size: 20px;
      font-weight: 800;
      color: var(--color-text-primary);
      margin-bottom: 14px;
    }

    .footer-desc {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.8;
      max-width: 320px;
    }

    .footer h4 {
      font-size: 15px;
      font-weight: 600;
      color: var(--color-text-primary);
      margin-bottom: 14px;
    }

    .footer ul li {
      margin-bottom: 6px;
    }

    .footer ul a {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 2;
      transition: color 0.25s ease;
    }

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

    .footer-contact-item {
      font-size: 14px;
      color: var(--color-text-secondary);
      margin-bottom: 6px;
    }

    .footer-bottom {
      margin-top: 48px;
      padding: 20px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      text-align: center;
      font-size: 13px;
      color: var(--color-text-muted);
    }

    /* ── 响应式 ── */
    @media (max-width: 991.98px) {
      .navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #0B0F1A;
        padding: 16px 24px 24px;
        border-bottom: 1px solid var(--color-border-glass);
      }

      .navbar-glass .navbar-nav .nav-link {
        padding: 10px 0;
      }

      .navbar-glass .navbar-nav .nav-link::after {
        left: 0;
        right: 0;
      }

      .page-hero {
        padding: 120px 0 56px;
      }

      .page-hero h1 {
        font-size: 36px;
      }

      .section-pad {
        padding: 72px 0;
      }

      .section-title {
        font-size: 28px;
      }

      .step-card-wrap:not(:last-child)::after {
        display: none;
      }
    }

    @media (max-width: 767.98px) {
      .container-custom {
        padding-right: 16px;
        padding-left: 16px;
      }

      .page-hero h1 {
        font-size: 32px;
      }

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

      .hero-img-wrap {
        margin-top: 16px;
      }

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

      .section-title {
        font-size: 26px;
      }

      .section-head {
        margin-bottom: 32px;
      }

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

      .notice-card {
        padding: 28px 20px;
      }

      .page-link-card {
        padding: 24px 20px;
      }

      .footer {
        padding-top: 48px;
      }

      .footer-bottom {
        margin-top: 32px;
      }
    }