/* roulang page: index */
:root {
  --bg: #0A0E16;
  --bg-alt: #0E1424;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-strong: rgba(255, 255, 255, 0.09);
  --border: rgba(255, 255, 255, 0.10);
  --border-hi: rgba(255, 255, 255, 0.22);
  --primary: #00C8FF;
  --primary-glow: rgba(0, 200, 255, 0.40);
  --accent: #FF6A00;
  --accent-glow: rgba(255, 106, 0, 0.45);
  --gradient-primary: linear-gradient(135deg, #00C8FF, #6A5CFF);
  --gradient-cta: linear-gradient(135deg, #FF8A00, #FF3D00);
  --text-hi: #F2F7FF;
  --text-mid: rgba(255, 255, 255, 0.72);
  --text-low: rgba(255, 255, 255, 0.45);
  --radius-card: 16px;
  --radius-btn: 8px;
  --radius-tag: 4px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
  --space-section: 90px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  background-color: var(--bg);
  color: var(--text-hi);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--primary);
  transition: color 0.2s ease;
}

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

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

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

.container-xxl {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== 左侧竖向导航（桌面端） ===== */
.side-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 260px;
  display: flex;
  flex-direction: column;
  background: rgba(10, 14, 22, 0.92);
  backdrop-filter: blur(16px);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  z-index: 1020;
  overflow-y: auto;
}

.side-nav::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(0, 200, 255, 0.06), transparent 70%);
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 4px 24px;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 12px rgba(0, 200, 255, 0.3));
}

.brand-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-hi);
  letter-spacing: 1px;
  white-space: nowrap;
}

.side-nav-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
}

.side-link {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 48px;
  padding: 0 16px;
  border-radius: 10px;
  color: var(--text-mid);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
}

.side-link:hover {
  color: var(--text-hi);
  background: rgba(255, 255, 255, 0.05);
  text-decoration: none;
}

.side-link.active {
  color: var(--primary);
  background: rgba(0, 200, 255, 0.08);
}

.side-link.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 4px;
  border-radius: 0 4px 4px 0;
  background: var(--primary);
  box-shadow: 0 0 12px var(--primary-glow);
}

.link-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.side-card {
  margin-top: auto;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 16px;
  margin-bottom: 8px;
}

.side-card-title {
  font-size: 13px;
  color: var(--text-low);
  letter-spacing: 0.8px;
  margin-bottom: 6px;
}

.side-card-progress {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 10px;
}

.side-card .progress {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  height: 6px;
  margin-bottom: 12px;
}

.side-card .progress-bar {
  background: var(--gradient-cta);
  border-radius: 6px;
  box-shadow: 0 0 10px var(--accent-glow);
}

.side-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--gradient-cta);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s ease;
  border: none;
  box-shadow: 0 0 14px var(--accent-glow);
}

.side-card-btn:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 22px var(--accent-glow);
  color: #fff;
  text-decoration: none;
}

.side-card-btn:active {
  transform: scale(0.97);
}

/* ===== 移动端顶部导航 ===== */
.mobile-nav {
  display: none;
}

/* ===== 内容区 ===== */
.main-content {
  margin-left: 260px;
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: calc(100vh - 0px);
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 22, 0.65);
  z-index: 1;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    radial-gradient(600px at 10% 20%, rgba(0, 200, 255, 0.15), transparent 70%),
    radial-gradient(600px at 90% 80%, rgba(255, 106, 0, 0.12), transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 40px 24px;
  max-width: 760px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid rgba(0, 200, 255, 0.4);
  border-radius: 100px;
  background: rgba(0, 200, 255, 0.08);
  color: var(--primary);
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 24px;
  box-shadow: 0 0 18px rgba(0, 200, 255, 0.15);
}

.hero h1 {
  font-size: 62px;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 1px;
  color: var(--text-hi);
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 40%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 18px;
  color: var(--text-mid);
  margin-bottom: 32px;
  letter-spacing: 0.5px;
}

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

.btn-cta {
  background: var(--gradient-cta);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 14px 36px;
  font-size: 16px;
  font-weight: 600;
  box-shadow: 0 0 24px var(--accent-glow);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.btn-cta:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 32px var(--accent-glow);
  color: #fff;
  text-decoration: none;
}

.btn-cta:active {
  transform: scale(0.97);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: var(--text-hi);
  border-radius: 10px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #fff;
  color: #fff;
  text-decoration: none;
}

.btn-outline:active {
  transform: scale(0.97);
}

.hero-scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  width: 28px;
  height: 44px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  animation: scrollFloat 1.6s ease-in-out infinite;
}

.hero-scroll::before {
  content: "";
  width: 4px;
  height: 8px;
  background: var(--primary);
  border-radius: 4px;
  margin-top: 8px;
  box-shadow: 0 0 8px var(--primary-glow);
}

@keyframes scrollFloat {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ===== 数据带 ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 24px 32px;
  position: relative;
}

.stat-item {
  text-align: center;
  padding: 8px 16px;
}

.stat-num {
  display: block;
  font-size: 38px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--primary);
  background: linear-gradient(135deg, #00C8FF, #6A5CFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  display: block;
  font-size: 13px;
  letter-spacing: 0.8px;
  color: var(--text-mid);
  margin-top: 4px;
}

/* ===== 通用区块 ===== */
.section {
  padding: var(--space-section) 0;
  position: relative;
}

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

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-hi);
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.section-sub {
  font-size: 15px;
  color: var(--text-mid);
  margin-bottom: 40px;
  max-width: 600px;
}

/* ===== 玩法卡片 ===== */
.game-card {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 36px 28px;
  height: 100%;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.game-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0.7;
}

.game-card.orange::before {
  background: var(--gradient-cta);
}

.game-card.duel::before {
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.game-card::after {
  content: "";
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  top: -80px;
  left: -80px;
  background: radial-gradient(circle, rgba(0, 200, 255, 0.15), transparent 70%);
  pointer-events: none;
}

.game-card.orange::after {
  background: radial-gradient(circle, rgba(255, 106, 0, 0.14), transparent 70%);
}

.game-card.duel::after {
  background: radial-gradient(circle, rgba(167, 107, 255, 0.14), transparent 70%);
}

.game-card:hover {
  transform: translateY(-4px);
  background: var(--surface-strong);
  border-color: var(--border-hi);
  box-shadow: var(--shadow-hover);
}

.game-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 200, 255, 0.12);
  border: 1px solid rgba(0, 200, 255, 0.3);
  margin-bottom: 20px;
  color: var(--primary);
  box-shadow: 0 0 18px rgba(0, 200, 255, 0.15);
}

.game-card.orange .game-icon {
  background: rgba(255, 106, 0, 0.12);
  border-color: rgba(255, 106, 0, 0.3);
  color: var(--accent);
  box-shadow: 0 0 18px rgba(255, 106, 0, 0.15);
}

.game-card.duel .game-icon {
  background: rgba(167, 107, 255, 0.12);
  border-color: rgba(167, 107, 255, 0.3);
  color: #A76BFF;
  box-shadow: 0 0 18px rgba(167, 107, 255, 0.15);
}

.game-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 12px;
}

.game-card p {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===== 奖励卡片 ===== */
.reward-card {
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 100%;
  transition: all 0.25s ease;
}

.reward-card:hover {
  transform: translateY(-4px);
  background: var(--surface-strong);
  border-color: var(--border-hi);
  box-shadow: var(--shadow-hover);
}

.reward-img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

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

.reward-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 6px;
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-tag);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.tag-blue {
  background: rgba(0, 200, 255, 0.15);
  color: var(--primary);
}

.tag-orange {
  background: rgba(255, 106, 0, 0.15);
  color: var(--accent);
}

.tag-purple {
  background: rgba(167, 107, 255, 0.15);
  color: #A76BFF;
}

/* ===== 任务与进度面板 ===== */
.task-panel,
.progress-panel {
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  height: 100%;
}

.task-panel {
  padding: 24px;
}

.task-panel-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 16px;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 4px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
  transition: background 0.2s ease;
}

.task-item:last-child {
  border-bottom: none;
}

.task-item:hover {
  background: rgba(255, 255, 255, 0.02);
}

.task-status {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--border-hi);
  flex-shrink: 0;
}

.task-status.doing {
  border-color: var(--primary);
  background: rgba(0, 200, 255, 0.2);
  box-shadow: 0 0 8px var(--primary-glow);
}

.task-status.done {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.task-name {
  flex: 1;
  color: var(--text-hi);
  font-size: 15px;
}

.task-reward {
  color: var(--accent);
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
}

.progress-panel {
  padding: 32px 28px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.progress-panel-label {
  font-size: 13px;
  letter-spacing: 0.8px;
  color: var(--text-low);
  margin-bottom: 8px;
}

.progress-num {
  font-size: 58px;
  font-weight: 700;
  line-height: 1.1;
  background: linear-gradient(135deg, #FF8A00, #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.progress-panel .progress {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  height: 6px;
  margin-bottom: 16px;
}

.progress-panel .progress-bar {
  background: var(--gradient-cta);
  border-radius: 6px;
  box-shadow: 0 0 12px var(--accent-glow);
}

.progress-desc {
  font-size: 14px;
  color: var(--text-mid);
  margin-bottom: 20px;
}

.btn-outline-sm {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: var(--text-hi);
  border-radius: 8px;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-block;
  text-decoration: none;
}

.btn-outline-sm:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #fff;
  color: #fff;
  text-decoration: none;
}

.btn-outline-sm:active {
  transform: scale(0.97);
}

/* ===== CTA区 ===== */
.cta-section {
  background: linear-gradient(180deg, var(--bg-alt), var(--bg) 60%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 80px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(0, 200, 255, 0.08), transparent 70%);
  pointer-events: none;
}

.cta-section h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 12px;
  position: relative;
}

.cta-section p {
  color: var(--text-mid);
  font-size: 16px;
  margin-bottom: 28px;
  position: relative;
}

.cta-section .btn-cta {
  position: relative;
  font-size: 17px;
  padding: 16px 42px;
}

/* ===== 资讯卡片 ===== */
.news-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  height: 100%;
  transition: all 0.25s ease;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.news-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 200, 255, 0.4);
  box-shadow: 0 0 24px var(--primary-glow);
  background: var(--surface-strong);
  text-decoration: none;
}

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

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.news-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-tag);
  background: rgba(0, 200, 255, 0.12);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.news-time {
  font-size: 12px;
  color: var(--text-low);
}

.news-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-hi);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card p {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.7;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 空态 */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 24px;
  background: var(--surface);
  border: 1px dashed var(--border-hi);
  border-radius: var(--radius-card);
}

.empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border: 2px dashed var(--border-hi);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--text-low);
  animation: emptyRotate 4s linear infinite;
}

@keyframes emptyRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.empty-state p {
  color: var(--text-mid);
  font-size: 15px;
  margin-bottom: 16px;
}

/* ===== FAQ ===== */
.accordion-item {
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
}

.accordion-button {
  background: transparent;
  color: var(--text-hi);
  font-size: 15px;
  font-weight: 600;
  padding: 20px 24px;
  transition: all 0.2s ease;
  box-shadow: none;
}

.accordion-button:hover {
  background: rgba(255, 255, 255, 0.03);
}

.accordion-button:not(.collapsed) {
  background: rgba(0, 200, 255, 0.06);
  color: var(--primary);
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--primary);
}

.accordion-button::after {
  background-image: none;
  content: "+";
  font-size: 26px;
  font-weight: 300;
  color: var(--text-mid);
  transform: none;
  transition: transform 0.2s ease, color 0.2s ease;
  width: auto;
  height: auto;
  line-height: 1;
}

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

.accordion-body {
  padding: 0 24px 20px;
  color: var(--text-mid);
  font-size: 14px;
  line-height: 1.8;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #070B12;
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-hi);
  margin: 16px 0 8px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.7;
  max-width: 280px;
}

.footer-col-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.footer-links a {
  display: block;
  color: var(--text-mid);
  text-decoration: none;
  padding: 6px 0;
  font-size: 14px;
  transition: all 0.2s ease;
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.footer-tags .tag {
  cursor: default;
}

.qr-placeholder {
  width: 100px;
  height: 100px;
  border: 2px dashed var(--border-hi);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--text-low);
  letter-spacing: 1px;
  background: rgba(255, 255, 255, 0.02);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  text-align: center;
  color: var(--text-low);
  font-size: 13px;
}

/* ===== 移动端导航 ===== */
.mobile-nav {
  display: none;
}

/* ===== 响应式 ===== */
@media (max-width: 1199.98px) {
  .hero h1 {
    font-size: 48px;
  }
}

@media (max-width: 991.98px) {
  :root {
    --space-section: 64px;
  }

  .side-nav {
    display: none;
  }

  .mobile-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    z-index: 1050;
    background: rgba(10, 14, 22, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0 16px;
  }

  .mobile-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 17px;
    font-weight: 700;
    color: var(--text-hi);
  }

  .custom-toggler {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 8px;
    padding: 6px 10px;
    line-height: 1;
  }

  .toggler-bar {
    display: block;
    width: 20px;
    height: 2px;
    background: #fff;
    margin: 4px 0;
    border-radius: 2px;
    transition: all 0.2s ease;
  }

  .custom-toggler[aria-expanded="true"] .toggler-bar:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }

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

  .custom-toggler[aria-expanded="true"] .toggler-bar:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
  }

  .mobile-menu {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: rgba(10, 14, 22, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 24px;
    z-index: 1049;
  }

  .mobile-link {
    display: block;
    font-size: 20px;
    font-weight: 500;
    padding: 14px 0;
    color: var(--text-mid);
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: all 0.2s ease;
  }

  .mobile-link:hover {
    color: var(--primary);
    padding-left: 6px;
    text-decoration: none;
  }

  .mobile-link.active {
    color: var(--accent);
  }

  .main-content {
    margin-left: 0;
    padding-top: 56px;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 0;
    padding: 20px;
  }

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

@media (max-width: 767.98px) {
  :root {
    --space-section: 48px;
  }

  .hero {
    min-height: calc(100vh - 56px);
  }

  .hero h1 {
    font-size: 34px;
    line-height: 1.25;
  }

  .hero-sub {
    font-size: 15px;
  }

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }

  .hero-btns .btn-cta,
  .hero-btns .btn-outline {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

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

  .section-sub {
    font-size: 14px;
  }

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

  .stat-num {
    font-size: 28px;
  }

  .cta-section {
    padding: 56px 20px;
  }

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

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

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

/* roulang page: category1 */
:root {
      --bg: #0A0E16;
      --bg-alt: #0E1424;
      --surface: rgba(255, 255, 255, 0.05);
      --surface-strong: rgba(255, 255, 255, 0.09);
      --border: rgba(255, 255, 255, 0.10);
      --border-hi: rgba(255, 255, 255, 0.22);
      --primary: #00C8FF;
      --primary-glow: rgba(0, 200, 255, 0.40);
      --accent: #FF6A00;
      --accent-glow: rgba(255, 106, 0, 0.45);
      --gradient-primary: linear-gradient(135deg, #00C8FF, #6A5CFF);
      --gradient-cta: linear-gradient(135deg, #FF8A00, #FF3D00);
      --text-hi: #F2F7FF;
      --text-mid: rgba(255, 255, 255, 0.72);
      --text-low: rgba(255, 255, 255, 0.45);
      --radius-card: 16px;
      --radius-btn: 10px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
      --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
      background: var(--bg);
      color: var(--text-hi);
      line-height: 1.7;
      font-size: 15px;
      overflow-x: hidden;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
      margin: 0;
      font-weight: 700;
      line-height: 1.3;
    }

    p {
      margin: 0;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.2s ease;
    }

    a:hover {
      color: #fff;
    }

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

    button {
      font-family: inherit;
    }

    .container-xxl {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
      --bs-gutter-x: 2rem;
    }

    .bg-layer {
      position: fixed;
      inset: 0;
      z-index: 0;
      pointer-events: none;
      overflow: hidden;
    }

    .bg-glow {
      position: absolute;
      width: 600px;
      height: 600px;
      border-radius: 50%;
      filter: blur(90px);
    }

    .bg-glow-a {
      top: -200px;
      left: -120px;
      background: rgba(0, 200, 255, 0.08);
    }

    .bg-glow-b {
      bottom: -200px;
      right: -120px;
      background: rgba(255, 106, 0, 0.06);
    }

    .bg-grid {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
      background-size: 40px 40px;
    }

    /* ===== 按钮 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 600;
      padding: 12px 30px;
      border: none;
      transition: all 0.2s ease;
      line-height: 1.2;
      white-space: nowrap;
    }

    .btn:focus-visible {
      outline: 3px solid var(--primary-glow);
      outline-offset: 2px;
    }

    .btn-cta {
      background: var(--gradient-cta);
      color: #fff;
      box-shadow: 0 0 24px var(--accent-glow);
    }

    .btn-cta:hover {
      filter: brightness(1.1);
      color: #fff;
      box-shadow: 0 0 32px var(--accent-glow);
      transform: translateY(-2px);
    }

    .btn-cta:active {
      transform: scale(0.97);
    }

    .btn-gradient {
      background: var(--gradient-primary);
      color: #fff;
    }

    .btn-gradient:hover {
      filter: brightness(1.1);
      color: #fff;
      box-shadow: 0 0 20px var(--primary-glow);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.35);
      color: #fff;
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: #fff;
      color: #fff;
    }

    .btn-sm {
      padding: 9px 20px;
      font-size: 14px;
      border-radius: 8px;
    }

    /* ===== 侧边导航 ===== */
    .side-nav {
      position: fixed;
      left: 0;
      top: 0;
      width: 260px;
      height: 100vh;
      background: rgba(10, 14, 22, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-right: 1px solid var(--border);
      z-index: 1050;
      display: flex;
      flex-direction: column;
      padding: 24px 16px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 12px;
      margin-bottom: 28px;
    }

    .brand-icon {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      background: var(--surface);
      border-radius: 10px;
      flex-shrink: 0;
    }

    .brand-text {
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: var(--text-hi);
    }

    .side-nav-links {
      display: flex;
      flex-direction: column;
      gap: 4px;
      flex: 1;
    }

    .side-link {
      display: flex;
      align-items: center;
      gap: 12px;
      height: 48px;
      padding: 0 12px;
      border-radius: 10px;
      color: var(--text-mid);
      font-size: 15px;
      font-weight: 500;
      transition: all 0.2s ease;
      position: relative;
    }

    .side-link .link-icon {
      width: 20px;
      height: 20px;
      flex-shrink: 0;
    }

    .side-link:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.05);
    }

    .side-link:focus-visible {
      outline: 3px solid var(--primary-glow);
      outline-offset: 2px;
    }

    .side-link.active {
      color: var(--primary);
      background: rgba(0, 200, 255, 0.08);
    }

    .side-link.active::before {
      content: "";
      position: absolute;
      left: -16px;
      top: 12px;
      width: 3px;
      height: 24px;
      background: var(--primary);
      border-radius: 0 4px 4px 0;
    }

    .side-card {
      margin-top: auto;
      padding: 16px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 12px;
      text-align: center;
    }

    .side-card p {
      font-size: 13px;
      color: var(--text-mid);
      margin-bottom: 10px;
    }

    .side-card .btn {
      width: 100%;
    }

    /* ===== 移动端导航 ===== */
    .mobile-nav {
      display: none;
    }

    /* ===== 主内容 ===== */
    .main-content {
      margin-left: 260px;
      position: relative;
      z-index: 1;
    }

    /* ===== Hero ===== */
    .page-hero {
      min-height: 64vh;
      display: flex;
      align-items: center;
      background-size: cover;
      background-position: center;
      position: relative;
      border-bottom: 1px solid var(--border);
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(10, 14, 22, 0.72), rgba(10, 14, 22, 0.92));
    }

    .page-hero .container-xxl {
      position: relative;
      z-index: 1;
      padding-top: 90px;
      padding-bottom: 90px;
    }

    .hero-kicker {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 2px;
      color: var(--primary);
      margin-bottom: 16px;
      padding: 6px 14px;
      background: rgba(0, 200, 255, 0.10);
      border: 1px solid rgba(0, 200, 255, 0.25);
      border-radius: 4px;
    }

    .page-hero h1 {
      font-size: 52px;
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: 1px;
      margin-bottom: 18px;
    }

    .hero-sub {
      color: var(--text-mid);
      font-size: 18px;
      max-width: 560px;
      margin-bottom: 34px;
    }

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

    /* ===== 通用区块 ===== */
    .page-section {
      padding: 90px 0;
    }

    .section-narrow {
      max-width: 860px;
      margin: 0 auto;
      text-align: center;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 2px;
      color: var(--accent);
      margin-bottom: 12px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: 34px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .section-desc {
      color: var(--text-mid);
      font-size: 16px;
      max-width: 720px;
      margin: 0 auto;
    }

    .section-head {
      margin-bottom: 48px;
      text-align: center;
    }

    .section-head .section-title {
      margin-bottom: 10px;
    }

    /* ===== 简介区 ===== */
    .intro-section {
      padding: 70px 0 30px;
    }

    .intro-card {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 44px 48px;
      text-align: center;
      box-shadow: var(--shadow-card);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
    }

    .intro-card h2 {
      font-size: 26px;
      margin-bottom: 16px;
    }

    .intro-card p {
      color: var(--text-mid);
      font-size: 16px;
      max-width: 780px;
      margin: 0 auto;
      line-height: 1.9;
    }

    /* ===== 特色卡片 ===== */
    .features-section {
      padding: 60px 0 90px;
    }

    .feature-card {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 32px 28px;
      height: 100%;
      transition: all 0.25s ease;
      box-shadow: var(--shadow-card);
      position: relative;
      overflow: hidden;
    }

    .feature-card::after {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--gradient-primary);
      opacity: 0.7;
    }

    .feature-card:nth-child(2)::after {
      background: var(--gradient-cta);
    }

    .feature-card:nth-child(3)::after {
      background: linear-gradient(90deg, var(--primary), var(--accent));
    }

    .feature-card:hover {
      background: var(--surface-strong);
      border-color: var(--border-hi);
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
    }

    .feature-icon {
      width: 54px;
      height: 54px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: var(--gradient-primary);
      margin-bottom: 22px;
      box-shadow: 0 0 18px var(--primary-glow);
    }

    .feature-icon svg {
      width: 28px;
      height: 28px;
    }

    .feature-card:nth-child(2) .feature-icon {
      background: var(--gradient-cta);
      box-shadow: 0 0 18px var(--accent-glow);
    }

    .feature-card:nth-child(3) .feature-icon {
      background: linear-gradient(135deg, #00C8FF, #FF6A00);
      box-shadow: 0 0 18px rgba(255, 106, 0, 0.35);
    }

    .feature-card h3 {
      font-size: 20px;
      margin-bottom: 12px;
    }

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

    /* ===== 比赛模式 ===== */
    .modes-section {
      background: var(--bg-alt);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 90px 0;
    }

    .mode-card {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      height: 100%;
      transition: all 0.25s ease;
      box-shadow: var(--shadow-card);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
    }

    .mode-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-hi);
      box-shadow: var(--shadow-card-hover);
    }

    .mode-thumb {
      position: relative;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: var(--bg);
    }

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

    .mode-card:hover .mode-thumb img {
      transform: scale(1.03);
    }

    .mode-thumb::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 50%, rgba(10, 14, 22, 0.82));
    }

    .mode-body {
      padding: 26px 24px 30px;
    }

    .mode-body h3 {
      font-size: 20px;
      margin-bottom: 10px;
    }

    .mode-body p {
      color: var(--text-mid);
      font-size: 14px;
      line-height: 1.75;
      margin-bottom: 16px;
    }

    .mode-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tag {
      display: inline-block;
      padding: 5px 12px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 500;
      letter-spacing: 0.3px;
    }

    .tag-blue {
      background: rgba(0, 200, 255, 0.12);
      color: var(--primary);
      border: 1px solid rgba(0, 200, 255, 0.2);
    }

    .tag-orange {
      background: rgba(255, 106, 0, 0.12);
      color: var(--accent);
      border: 1px solid rgba(255, 106, 0, 0.2);
    }

    .tag-purple {
      background: rgba(167, 107, 255, 0.14);
      color: #B77CFF;
      border: 1px solid rgba(167, 107, 255, 0.22);
    }

    /* ===== 流程 ===== */
    .flow-section {
      padding: 90px 0;
    }

    .flow-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 28px;
      margin-top: 48px;
    }

    .step-item {
      text-align: center;
      padding: 24px 16px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      position: relative;
      transition: all 0.25s ease;
    }

    .step-item:hover {
      background: var(--surface-strong);
      border-color: var(--border-hi);
      transform: translateY(-4px);
    }

    .step-item:not(:last-child)::after {
      content: "";
      position: absolute;
      top: 42px;
      right: -24px;
      width: 20px;
      height: 2px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      z-index: 1;
    }

    .step-num {
      width: 44px;
      height: 44px;
      margin: 0 auto 16px;
      background: var(--gradient-primary);
      border-radius: 50%;
      display: grid;
      place-items: center;
      font-weight: 700;
      color: #fff;
      font-size: 18px;
      box-shadow: 0 0 16px var(--primary-glow);
    }

    .step-item:nth-child(even) .step-num {
      background: var(--gradient-cta);
      box-shadow: 0 0 16px var(--accent-glow);
    }

    .step-item h3 {
      font-size: 16px;
      margin-bottom: 8px;
    }

    .step-item p {
      color: var(--text-mid);
      font-size: 13px;
      line-height: 1.6;
    }

    /* ===== 数据带 ===== */
    .stats-bar {
      background: var(--bg-alt);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 42px 0;
    }

    .stat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .stat-num {
      font-size: 42px;
      font-weight: 700;
      background: linear-gradient(135deg, #00C8FF, #6A5CFF);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: 0.5px;
      line-height: 1.2;
      margin-bottom: 4px;
    }

    .stat-label {
      color: var(--text-mid);
      font-size: 13px;
      font-weight: 500;
      letter-spacing: 1px;
    }

    /* ===== FAQ ===== */
    .faq-section {
      padding: 90px 0;
    }

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

    .custom-accordion .accordion-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 12px;
      margin-bottom: 12px;
      overflow: hidden;
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }

    .custom-accordion .accordion-item:last-child {
      margin-bottom: 0;
    }

    .custom-accordion .accordion-button {
      background: transparent;
      color: var(--text-hi);
      font-size: 15px;
      font-weight: 600;
      padding: 20px 52px 20px 20px;
      text-align: left;
      box-shadow: none;
      border: 0;
    }

    .custom-accordion .accordion-button:not(.collapsed) {
      background: rgba(0, 200, 255, 0.06);
      color: var(--primary);
    }

    .custom-accordion .accordion-button:focus {
      box-shadow: none;
      outline: 3px solid var(--primary-glow);
      outline-offset: -1px;
    }

    .custom-accordion .accordion-button::after {
      display: none;
    }

    .custom-accordion .accordion-button::before {
      content: "+";
      position: absolute;
      right: 20px;
      top: 50%;
      transform: translateY(-50%);
      width: 22px;
      height: 22px;
      border-radius: 50%;
      border: 1px solid var(--border-hi);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      line-height: 1;
      color: var(--primary);
      font-weight: 400;
      transition: transform 0.3s ease, border-color 0.3s ease;
    }

    .custom-accordion .accordion-button:not(.collapsed)::before {
      transform: translateY(-50%) rotate(45deg);
      border-color: var(--primary);
    }

    .custom-accordion .accordion-body {
      padding: 0 20px 20px;
      color: var(--text-mid);
      font-size: 14px;
      line-height: 1.7;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 16px;
      margin-top: 0;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: 80px 0 100px;
    }

    .cta-card {
      background: linear-gradient(160deg, rgba(0, 200, 255, 0.12), rgba(255, 106, 0, 0.06));
      border: 1px solid var(--border-hi);
      border-radius: 20px;
      padding: 60px 48px;
      text-align: center;
      position: relative;
      overflow: hidden;
      box-shadow: 0 0 60px rgba(0, 200, 255, 0.08);
    }

    .cta-card::before {
      content: "";
      position: absolute;
      top: -2px;
      left: 0;
      right: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
    }

    .cta-card h2 {
      font-size: 32px;
      margin-bottom: 12px;
    }

    .cta-card p {
      color: var(--text-mid);
      font-size: 16px;
      margin-bottom: 32px;
    }

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

    /* ===== 页脚 ===== */
    .site-footer {
      background: #070B12;
      border-top: 1px solid var(--border);
      padding: 56px 0 24px;
      position: relative;
      z-index: 1;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 36px;
    }

    .footer-brand .brand {
      padding: 0;
      margin-bottom: 14px;
    }

    .footer-brand p {
      color: var(--text-mid);
      font-size: 14px;
      line-height: 1.7;
      max-width: 280px;
    }

    .footer-col-title {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-hi);
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }

    .footer-links a {
      display: block;
      color: var(--text-mid);
      font-size: 14px;
      margin-bottom: 12px;
      transition: color 0.2s ease;
    }

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

    .footer-tags {
      margin-bottom: 20px;
    }

    .footer-tags .tag {
      margin: 0 8px 8px 0;
    }

    .qr-placeholder {
      width: 100px;
      height: 100px;
      border: 1px dashed var(--border-hi);
      border-radius: 12px;
      display: grid;
      place-items: center;
      font-size: 12px;
      color: var(--text-low);
    }

    .footer-bottom {
      border-top: 1px solid var(--border);
      padding-top: 20px;
      text-align: center;
      color: var(--text-low);
      font-size: 13px;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1199.98px) {
      .flow-steps {
        grid-template-columns: repeat(3, 1fr);
      }

      .step-item:nth-child(3)::after {
        display: none;
      }

      .step-item:nth-child(4) {
        margin-top: 20px;
      }

      .step-item:nth-child(5) {
        margin-top: 20px;
      }

      .step-item:nth-child(4)::after {
        display: none;
      }
    }

    @media (max-width: 991.98px) {
      .side-nav {
        display: none;
      }

      .mobile-nav {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 56px;
        background: rgba(10, 14, 22, 0.94);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
        z-index: 1040;
      }

      .mobile-nav-bar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 56px;
        padding: 0 16px;
      }

      .mobile-nav .brand {
        padding: 0;
        margin: 0;
        gap: 8px;
      }

      .mobile-nav .brand-text {
        font-size: 18px;
      }

      .mobile-nav .brand-icon {
        width: 32px;
        height: 32px;
      }

      .nav-toggle {
        background: none;
        border: 0;
        color: #fff;
        width: 42px;
        height: 42px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        padding: 0;
      }

      .nav-toggle .bar {
        display: block;
        width: 18px;
        height: 2px;
        background: #fff;
        margin: 3px auto;
        border-radius: 2px;
        transition: all 0.3s ease;
      }

      .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(5px) rotate(45deg);
      }

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

      .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-5px) rotate(-45deg);
      }

      .mobile-menu {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 22, 0.97);
        padding: 16px;
        display: none;
        border-bottom: 1px solid var(--border);
        z-index: 1030;
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
      }

      .mobile-menu.open {
        display: block;
      }

      .mobile-menu a {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 14px 16px;
        color: var(--text-mid);
        font-size: 17px;
        font-weight: 500;
        border-radius: 10px;
        transition: all 0.2s ease;
      }

      .mobile-menu a:hover {
        background: var(--surface);
        color: #fff;
      }

      .mobile-menu a.active {
        color: var(--primary);
        background: rgba(0, 200, 255, 0.08);
      }

      .main-content {
        margin-left: 0;
        padding-top: 56px;
      }

      .page-hero {
        min-height: 50vh;
      }

      .page-hero h1 {
        font-size: 40px;
      }

      .page-section {
        padding: 60px 0;
      }

      .intro-section {
        padding: 40px 0 20px;
      }

      .features-section {
        padding: 40px 0 60px;
      }

      .modes-section,
      .flow-section,
      .faq-section,
      .cta-section {
        padding: 60px 0;
      }

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

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

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

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

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

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

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

      .intro-card h2 {
        font-size: 22px;
      }

      .intro-card p {
        font-size: 15px;
      }

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

      .mode-body {
        padding: 20px;
      }

      .flow-steps {
        grid-template-columns: 1fr;
        gap: 16px;
      }

      .step-item {
        display: flex;
        align-items: center;
        text-align: left;
        padding: 18px 16px;
        gap: 16px;
      }

      .step-item::after {
        display: none;
      }

      .step-num {
        margin: 0;
        flex-shrink: 0;
      }

      .step-item h3 {
        margin-bottom: 2px;
        font-size: 15px;
      }

      .step-item p {
        font-size: 13px;
      }

      .stat-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px 16px;
      }

      .stat-num {
        font-size: 32px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .cta-card {
        padding: 36px 20px;
      }

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

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

    @media (max-width: 575.98px) {
      .page-hero .container-xxl {
        padding-top: 50px;
        padding-bottom: 50px;
      }

      .hero-kicker {
        font-size: 12px;
      }

      .page-hero h1 {
        font-size: 28px;
      }

      .hero-sub {
        font-size: 15px;
      }

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

      .faq-wrap {
        padding: 0;
      }

      .custom-accordion .accordion-button {
        font-size: 14px;
        padding-right: 42px;
      }
    }

/* roulang page: article */
:root {
  --bg: #0A0E16;
  --bg-alt: #0E1424;
  --surface: rgba(255,255,255,0.05);
  --surface-strong: rgba(255,255,255,0.09);
  --border: rgba(255,255,255,0.10);
  --border-hi: rgba(255,255,255,0.22);
  --primary: #00C8FF;
  --primary-glow: rgba(0,200,255,0.40);
  --accent: #FF6A00;
  --accent-glow: rgba(255,106,0,0.45);
  --gradient-primary: linear-gradient(135deg, #00C8FF, #6A5CFF);
  --gradient-cta: linear-gradient(135deg, #FF8A00, #FF3D00);
  --text-hi: #F2F7FF;
  --text-mid: rgba(255,255,255,0.72);
  --text-low: rgba(255,255,255,0.45);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  background:
    radial-gradient(620px at 10% 6%, rgba(0, 200, 255, 0.10), transparent 60%),
    radial-gradient(720px at 90% 94%, rgba(255, 106, 0, 0.08), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text-hi);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #fff;
}

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

button {
  font-family: inherit;
}

.main-content {
  margin-left: 260px;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

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

.side-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  z-index: 1040;
  background: rgba(10, 14, 22, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 8px 20px;
  border-bottom: 1px solid var(--border);
}

.brand-icon {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.brand-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-hi);
  white-space: nowrap;
}

.side-nav-links {
  display: flex;
  flex-direction: column;
  margin-top: 16px;
  gap: 4px;
}

.side-link {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 48px;
  padding: 0 14px;
  border-radius: 10px;
  color: var(--text-mid);
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
}

.side-link .link-icon {
  width: 18px;
  height: 18px;
  flex: none;
}

.side-link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.side-link.active {
  background: rgba(0, 200, 255, 0.10);
  color: var(--primary);
}

.side-link.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}

.side-cta-card {
  margin-top: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  text-align: center;
}

.side-cta-card p {
  font-size: 13px;
  color: var(--text-low);
  margin-bottom: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  border: 0;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1;
}

.btn-sm {
  padding: 10px 20px;
  font-size: 13px;
}

.btn-blue {
  background: linear-gradient(135deg, #00C8FF, #6A5CFF);
  color: #fff;
}

.btn-blue:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 20px var(--primary-glow);
  color: #fff;
}

.btn-cta {
  background: linear-gradient(135deg, #FF8A00, #FF3D00);
  color: #fff;
  box-shadow: 0 0 24px var(--accent-glow);
  border-radius: 10px;
}

.btn-cta:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 32px var(--accent-glow);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-hi);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #fff;
  color: #fff;
}

.btn:active {
  transform: scale(0.98);
}

.mobile-header,
.mobile-nav-panel {
  display: none;
}

.mobile-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  z-index: 1050;
  background: rgba(10, 14, 22, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

.mobile-header .brand {
  border-bottom: 0;
  padding: 0;
}

.mobile-header .brand-text {
  font-size: 18px;
}

.mobile-header .brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
}

.menu-toggle {
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle .bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-hi);
  border-radius: 2px;
  transition: all 0.3s ease;
}

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

.menu-toggle.active .bar:nth-child(2) {
  opacity: 0;
}

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

.mobile-nav-panel.collapse {
  display: none !important;
}

.mobile-nav-panel.collapse.show {
  display: grid !important;
}

.mobile-nav-panel {
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  z-index: 1040;
  background: rgba(10, 14, 22, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 16px;
  gap: 4px;
}

.mobile-nav-panel a {
  padding: 14px;
  border-radius: 10px;
  font-size: 20px;
  color: var(--text-mid);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-nav-panel a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}

.mobile-nav-panel a.active {
  color: var(--accent);
  background: rgba(255, 106, 0, 0.10);
}

.mobile-nav-panel .link-icon {
  width: 20px;
  height: 20px;
  flex: none;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--text-low);
  padding: 28px 0 12px;
}

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

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

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

.article-header-card {
  margin-top: 12px;
  background:
    linear-gradient(160deg, rgba(10, 14, 22, 0.95), rgba(10, 14, 22, 0.80)),
    url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px 52px;
  position: relative;
  overflow: hidden;
}

.article-header-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.article-header-card h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  color: var(--text-hi);
  overflow-wrap: break-word;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  color: var(--text-low);
  font-size: 13px;
}

.meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-low);
  opacity: 0.5;
}

.article-body {
  max-width: 768px;
  margin: 0 auto;
  padding: 40px 0 8px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-mid);
}

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

.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-hi);
  margin: 40px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-hi);
  margin: 32px 0 12px;
}

.article-body h3::before {
  content: "+";
  color: var(--accent);
  margin-right: 8px;
  font-weight: 700;
}

.article-body img {
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin: 24px 0;
}

.article-body blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(255, 255, 255, 0.04);
  padding: 16px 20px;
  margin: 24px 0;
  color: var(--text-low);
  border-radius: 0 12px 12px 0;
}

.article-body ul,
.article-body ol {
  padding-left: 20px;
  margin-bottom: 24px;
}

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

.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: #fff;
}

.article-body code {
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.article-body pre {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  overflow-x: auto;
  margin-bottom: 24px;
  line-height: 1.6;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 768px;
  margin: 28px auto 0;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  border-radius: 4px;
  line-height: 1.5;
}

.tag-blue {
  background: rgba(0, 200, 255, 0.12);
  color: var(--primary);
  border: 1px solid rgba(0, 200, 255, 0.25);
}

.tag-orange {
  background: rgba(255, 106, 0, 0.12);
  color: #FF8A00;
  border: 1px solid rgba(255, 106, 0, 0.25);
}

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 768px;
  margin: 24px auto 0;
  padding-bottom: 48px;
}

.post-nav-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  color: var(--text-mid);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
}

.post-nav-card.next {
  justify-content: flex-end;
}

.post-nav-card:hover {
  background: var(--surface-strong);
  border-color: var(--border-hi);
  color: var(--text-hi);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.post-nav-card .nav-arrow {
  width: 18px;
  height: 18px;
  flex: none;
  transition: transform 0.2s ease;
}

.post-nav-card.prev:hover .nav-arrow {
  transform: translateX(-3px);
}

.post-nav-card.next:hover .nav-arrow {
  transform: translateX(3px);
}

.related-section {
  padding: 56px 0 64px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  box-shadow: inset 0 8px 30px rgba(0, 0, 0, 0.15);
}

.related-section h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.section-sub {
  color: var(--text-low);
  font-size: 14px;
  margin-bottom: 32px;
}

.related-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  height: 100%;
  transition: all 0.25s ease;
  display: block;
  color: var(--text-hi);
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hi);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  color: var(--text-hi);
}

.related-card .cover {
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
  background: #0B101B;
}

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

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

.related-card .content {
  padding: 20px;
}

.related-card .content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card .content p {
  font-size: 14px;
  color: var(--text-mid);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card .content .time {
  font-size: 12px;
  color: var(--text-low);
  letter-spacing: 0.5px;
}

.cta-section {
  padding: 64px 0 72px;
  text-align: center;
}

.cta-section h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.cta-section p {
  color: var(--text-mid);
  margin-bottom: 28px;
  font-size: 15px;
}

.not-found-box {
  max-width: 640px;
  margin: 48px auto 64px;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 56px 32px;
}

.not-found-box .empty-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  border: 1px dashed var(--border-hi);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-low);
}

.not-found-box .empty-icon svg {
  width: 32px;
  height: 32px;
}

.not-found-box p {
  font-size: 18px;
  color: var(--text-mid);
  margin-bottom: 24px;
}

.site-footer {
  background: #070B12;
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-brand .brand {
  border-bottom: 0;
  padding: 0;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-low);
  max-width: 280px;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 4px;
}

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

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

.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.qr-placeholder {
  width: 100px;
  height: 100px;
  border: 1px dashed var(--border-hi);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-low);
  font-size: 12px;
}

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

@media (max-width: 991.98px) {
  .side-nav {
    display: none !important;
  }

  .main-content {
    margin-left: 0;
    padding-top: 56px;
  }

  .mobile-header {
    display: flex;
  }

  .container-xxl {
    padding-left: 16px;
    padding-right: 16px;
  }
}

@media (max-width: 767.98px) {
  .article-header-card {
    padding: 32px 20px;
    border-radius: 16px;
  }

  .article-header-card h1 {
    font-size: 26px;
  }

  .article-meta {
    gap: 10px;
    font-size: 12px;
  }

  .breadcrumb-nav {
    font-size: 12px;
    gap: 6px;
    padding-top: 20px;
  }

  .article-body {
    font-size: 15px;
    padding-top: 28px;
  }

  .article-body h2 {
    font-size: 20px;
  }

  .article-body h3 {
    font-size: 17px;
  }

  .post-nav {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-bottom: 32px;
  }

  .related-section {
    padding: 40px 0 48px;
  }

  .related-section h2 {
    font-size: 22px;
  }

  .cta-section {
    padding: 40px 0 48px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    font-size: 12px;
  }

  .btn {
    padding: 12px 20px;
  }
}

@media (max-width: 520px) {
  .breadcrumb-nav {
    font-size: 11px;
  }

  .article-header-card {
    padding: 26px 16px;
  }

  .article-header-card h1 {
    font-size: 22px;
  }

  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .article-tags {
    gap: 8px;
  }

  .related-card .content {
    padding: 16px;
  }

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