/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #e83e3e;
  --primary-dark: #c72a2a;
  --primary-light: #ff6b6b;
  --secondary: #ff8a00;
  --accent: #ffd600;
  --bg-dark: #0d0d0d;
  --bg-card: #1a1a2e;
  --bg-section: #12121a;
  --bg-light: #f5f5f5;
  --text-white: #ffffff;
  --text-light: #e0e0e0;
  --text-muted: #a0a0b0;
  --text-dark: #1a1a2e;
  --border-color: rgba(255,255,255,0.08);
  --border-light: #e0e0e0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-hover: 0 12px 48px rgba(232,62,62,0.25);
  --shadow-btn: 0 4px 16px rgba(232,62,62,0.35);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container: 1200px;
  --gap: 24px;
  --gap-lg: 48px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; }
ul, ol { list-style: none; }

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gap);
}

/* ===== 导航 ===== */
.site-header {
  background: rgba(13,13,13,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-toggle, .menu-toggle {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
  transition: var(--transition);
}

.search-toggle:hover, .menu-toggle:hover {
  background: rgba(255,255,255,0.06);
  color: var(--text-white);
}

.nav-channel {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.nav-channel::-webkit-scrollbar { display: none; }

.nav-channel a {
  white-space: nowrap;
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
}

.nav-channel a:hover {
  color: var(--text-white);
  background: rgba(255,255,255,0.05);
}

.nav-channel a.active {
  color: var(--text-white);
  background: var(--primary);
  box-shadow: 0 2px 12px rgba(232,62,62,0.3);
}

.nav-channel a i { margin-right: 6px; font-size: 0.8rem; }

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(16px);
  z-index: 2000;
  padding: 80px 24px 40px;
  overflow-y: auto;
}

.mobile-menu.active { display: flex; flex-direction: column; }

.mobile-menu-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  color: var(--text-white);
  font-size: 1.6rem;
  cursor: pointer;
}

.mobile-menu a {
  display: block;
  padding: 14px 0;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-light);
  border-bottom: 1px solid var(--border-color);
  text-align: center;
}

.mobile-menu a.active { color: var(--primary-light); }
.mobile-menu a i { margin-right: 10px; }

/* ===== Hero 首屏 ===== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.35;
  transform: scale(1.02);
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  0% { transform: scale(1); }
  100% { transform: scale(1.08); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,13,13,0.92) 0%, rgba(13,13,13,0.6) 50%, rgba(232,62,62,0.15) 100%);
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 80px 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(232,62,62,0.18);
  border: 1px solid rgba(232,62,62,0.3);
  border-radius: 50px;
  padding: 6px 20px;
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 24px;
  animation: fadeInDown 0.8s ease-out;
}

.hero-badge i { font-size: 0.75rem; }

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 900;
  color: var(--text-white);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-title span {
  background: linear-gradient(135deg, var(--primary-light), var(--secondary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 28px rgba(232,62,62,0.45);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-white);
  border: 1.5px solid rgba(255,255,255,0.2);
}

.btn-outline:hover {
  border-color: var(--primary-light);
  color: var(--primary-light);
  transform: translateY(-2px);
}

.btn-lg { padding: 16px 48px; font-size: 1.1rem; }

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: center;
  margin-top: 56px;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-stat { text-align: center; }

.hero-stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.2;
}

.hero-stat-num i { color: var(--primary-light); margin-right: 6px; font-size: 1.6rem; }

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 板块通用 ===== */
.section {
  padding: 80px 0;
  position: relative;
}

.section-dark { background: var(--bg-section); }
.section-card-bg { background: var(--bg-card); }

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 分类卡片网格 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--gap);
}

.category-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(232,62,62,0.2);
}

.category-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

.category-card:hover .category-card-img { transform: scale(1.05); }

.category-card-body {
  padding: 24px 20px 20px;
}

.category-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(232,62,62,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--primary-light);
  margin-bottom: 12px;
}

.category-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}

.category-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}

.category-card .btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
  border-radius: 50px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(232,62,62,0.08);
  color: var(--primary-light);
  border: 1px solid rgba(232,62,62,0.15);
  transition: var(--transition);
}

.category-card .btn-sm:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== 资讯列表 ===== */
.post-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--gap);
}

.post-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.post-card-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.post-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.post-card:hover .post-card-img { transform: scale(1.05); }

.post-card-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 14px;
  border-radius: 20px;
  background: rgba(232,62,62,0.85);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
}

.post-card-body {
  padding: 20px;
}

.post-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.post-card-meta i { margin-right: 4px; font-size: 0.7rem; }

/* ===== 流程 / 数据 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--gap);
  counter-reset: step;
}

.step-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(232,62,62,0.2);
}

.step-num {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 16px;
}

.step-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* 统计数字 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--gap);
  text-align: center;
}

.stat-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 16px;
  border: 1px solid var(--border-color);
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== 特点 / 优势 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--gap);
}

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 20px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(232,62,62,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--primary-light);
  margin: 0 auto 16px;
}

.feature-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: rgba(232,62,62,0.15); }

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--text-white);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  transition: var(--transition);
}

.faq-question:hover { color: var(--primary-light); }

.faq-question i {
  transition: var(--transition);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary-light); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 20px 18px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(232,62,62,0.08) 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.cta-box {
  text-align: center;
  padding: 40px 24px;
}

.cta-box h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
}

.cta-box p {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto 28px;
}

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

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer-brand .logo { font-size: 1.3rem; margin-bottom: 12px; }

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
  max-width: 320px;
  line-height: 1.7;
}

.footer-col h5 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: var(--transition);
}

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

.footer-col a i { margin-right: 8px; font-size: 0.75rem; }

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
  font-size: 0.95rem;
}

.footer-social a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ===== 暂无数据 ===== */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 1rem;
}

.empty-state i {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
  color: var(--text-muted);
  opacity: 0.4;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .hero { min-height: 70vh; }
  .hero .container { padding: 60px 16px; }
  .hero-stats { gap: 24px; margin-top: 40px; }
  .hero-stat-num { font-size: 1.6rem; }

  .header-brand { padding: 10px 0; }
  .logo { font-size: 1.2rem; }

  .nav-channel { padding: 6px 0; }
  .nav-channel a { padding: 5px 14px; font-size: 0.82rem; }

  .post-list { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .cta-box { padding: 24px 16px; }
}

@media (max-width: 520px) {
  .hero { min-height: 60vh; }
  .hero-title { font-size: 1.8rem; }
  .hero-desc { font-size: 0.95rem; }
  .hero-actions .btn { width: 100%; justify-content: center; }

  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }

  .section-title { font-size: 1.4rem; }
  .post-card-img-wrap { height: 160px; }
  .category-card-img { height: 160px; }

  .header-actions .search-toggle { display: none; }
}

/* roulang page: article */
:root {
  --primary: #ff6b00;
  --primary-dark: #e05500;
  --primary-light: #ff8c38;
  --primary-glow: rgba(255, 107, 0, 0.25);
  --secondary: #1a0a2e;
  --secondary-light: #2d1b4e;
  --accent: #00d4ff;
  --accent-dark: #00a8cc;
  --bg-dark: #0d0a1a;
  --bg-card: #151030;
  --bg-card-hover: #1e0f40;
  --bg-section: #100b22;
  --text-primary: #f0e8ff;
  --text-secondary: #b8a8d8;
  --text-muted: #7a6a9a;
  --border-color: rgba(255, 107, 0, 0.15);
  --border-glow: rgba(0, 212, 255, 0.1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 60px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(255, 107, 0, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --max-width: 1200px;
  --header-height: 70px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

button, input, textarea { font-family: inherit; font-size: inherit; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary-dark); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== HEADER & NAV ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(13, 10, 26, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  transition: var(--transition);
  white-space: nowrap;
}
.logo:hover { color: var(--primary-light); transform: scale(1.02); }
.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 1.1rem;
  box-shadow: 0 0 20px var(--primary-glow);
}
.logo span { color: var(--primary-light); }

.nav-channel {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-channel::-webkit-scrollbar { display: none; }

.nav-channel a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: var(--transition);
  border: 1px solid transparent;
}
.nav-channel a i { font-size: 0.8rem; }
.nav-channel a:hover { color: var(--text-primary); background: rgba(255,107,0,0.08); border-color: var(--border-color); }
.nav-channel a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: var(--primary);
  box-shadow: 0 0 25px var(--primary-glow);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-toggle:hover { background: rgba(255,255,255,0.05); }

/* ===== MOBILE NAV ===== */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: rgba(13, 10, 26, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 20px;
  z-index: 999;
  flex-direction: column;
  gap: 8px;
  transform: translateY(-110%);
  transition: transform 0.35s ease;
}
.mobile-nav.open { transform: translateY(0); }
.mobile-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
}
.mobile-nav a:hover { background: rgba(255,107,0,0.08); color: var(--text-primary); }
.mobile-nav a.active { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; }

/* ===== ARTICLE HERO ===== */
.article-hero {
  padding: 120px 0 60px;
  background: linear-gradient(160deg, var(--bg-dark) 0%, var(--secondary) 60%, var(--bg-dark) 100%);
  position: relative;
  overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.12;
  mix-blend-mode: overlay;
}
.article-hero::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  pointer-events: none;
}
.article-hero .container { position: relative; z-index: 2; }

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.article-breadcrumb a { color: var(--text-muted); }
.article-breadcrumb a:hover { color: var(--primary-light); }
.article-breadcrumb .sep { color: var(--text-muted); opacity: 0.5; }

.article-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  margin-bottom: 16px;
  align-items: center;
}
.article-hero-category {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.article-hero-date {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.article-hero-date i { color: var(--primary-light); }

.article-hero h1 {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.article-hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 760px;
  line-height: 1.7;
}

/* ===== ARTICLE MAIN ===== */
.article-main-area {
  padding: 50px 0 80px;
  background: var(--bg-dark);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}

.article-content {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.article-content p {
  margin-bottom: 1.4em;
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.85;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2em 0 0.8em;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-color);
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 1.8em 0 0.6em;
}

.article-content ul, .article-content ol {
  margin: 0 0 1.4em 1.5em;
  color: var(--text-secondary);
}
.article-content li { margin-bottom: 0.4em; }

.article-content blockquote {
  margin: 1.5em 0;
  padding: 16px 24px;
  border-left: 4px solid var(--primary);
  background: rgba(255,107,0,0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

.article-content a { color: var(--accent); text-decoration: underline; }
.article-content a:hover { color: var(--primary-light); }

.article-content img {
  border-radius: var(--radius-md);
  margin: 1.5em 0;
  box-shadow: var(--shadow-sm);
}

.article-content .article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 2.5em;
  padding-top: 1.5em;
  border-top: 1px solid var(--border-color);
}
.article-content .tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 14px;
  border-radius: 50px;
  background: rgba(255,107,0,0.1);
  color: var(--primary-light);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.article-content .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== SIDEBAR ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.sidebar-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h4 i { color: var(--primary-light); }

.sidebar-related {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-related-item {
  display: flex;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.02);
  border: 1px solid transparent;
  transition: var(--transition);
  cursor: pointer;
}
.sidebar-related-item:hover { background: rgba(255,107,0,0.05); border-color: var(--border-color); }

.sidebar-related-img {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-section);
}

.sidebar-related-info h5 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.sidebar-related-info span {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.sidebar-cta {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  border: 1px solid var(--border-glow);
  text-align: center;
  padding: 28px 20px;
}
.sidebar-cta h4 { justify-content: center; }
.sidebar-cta p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 16px; }
.sidebar-cta .btn { width: 100%; justify-content: center; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 28px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 20px var(--primary-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 35px var(--primary-glow); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--primary-light);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-sm { padding: 6px 18px; font-size: 0.8rem; }

/* ===== RELATED POSTS SECTION ===== */
.related-section {
  padding: 60px 0 80px;
  background: var(--bg-section);
  border-top: 1px solid var(--border-color);
}

.related-section h2 {
  font-size: 1.6rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.related-section .section-sub {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 40px;
  font-size: 0.95rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary); }

.related-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: var(--bg-section);
}

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

.related-card-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-body h3 a { color: inherit; }
.related-card-body h3 a:hover { color: var(--primary-light); }

.related-card-body p {
  font-size: 0.88rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.related-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.related-card-meta span { display: flex; align-items: center; gap: 4px; }
.related-card-meta i { color: var(--primary-light); }

/* ===== FAQ ===== */
.faq-section {
  padding: 70px 0;
  background: var(--bg-dark);
}

.faq-section h2 {
  font-size: 1.6rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.faq-section .section-sub {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 40px;
  font-size: 0.95rem;
}

.faq-grid {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(255,107,0,0.3); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
  gap: 12px;
  user-select: none;
  transition: var(--transition);
}
.faq-question i { color: var(--primary-light); transition: var(--transition); font-size: 0.85rem; }
.faq-question.open i { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 20px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}
.faq-answer.open {
  max-height: 300px;
  padding: 0 20px 18px;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--secondary);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 0;
}

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

.footer-brand .logo { font-size: 1.2rem; margin-bottom: 14px; }
.footer-brand p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; max-width: 360px; }

.footer-col h5 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.footer-col a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col a i { font-size: 0.6rem; color: var(--primary-light); }
.footer-col a:hover { color: var(--primary-light); padding-left: 4px; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid var(--border-color);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-social { display: flex; gap: 12px; }
.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  color: var(--text-muted);
  font-size: 1rem;
  transition: var(--transition);
  border: 1px solid transparent;
}
.footer-social a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: scale(1.1); }

/* ===== NOT FOUND ===== */
.not-found-box {
  text-align: center;
  padding: 60px 20px;
}
.not-found-box i { font-size: 3rem; color: var(--text-muted); margin-bottom: 16px; }
.not-found-box h2 { font-size: 1.8rem; color: var(--text-primary); margin-bottom: 12px; }
.not-found-box p { color: var(--text-muted); margin-bottom: 24px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-channel { display: none; }
  .nav-toggle { display: block; }
  .mobile-nav { display: flex; }

  .article-hero h1 { font-size: 1.6rem; }
  .article-content { padding: 24px; }
  .article-content h2 { font-size: 1.25rem; }
  .article-content p { font-size: 0.95rem; }

  .article-sidebar { grid-template-columns: 1fr; }

  .related-grid { grid-template-columns: 1fr; }
  .related-card-img { height: 160px; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .faq-question { font-size: 0.88rem; padding: 14px 16px; }
}

@media (max-width: 520px) {
  .article-hero { padding: 100px 0 40px; }
  .article-hero h1 { font-size: 1.3rem; }
  .article-hero-desc { font-size: 0.9rem; }
  .article-content { padding: 16px; }
  .article-content h2 { font-size: 1.1rem; }
  .article-breadcrumb { font-size: 0.75rem; }
  .article-hero-meta { gap: 10px; }
  .sidebar-card { padding: 18px; }
  .related-section h2 { font-size: 1.2rem; }
  .faq-section h2 { font-size: 1.2rem; }
  .logo { font-size: 1.1rem; }
  .logo-icon { width: 30px; height: 30px; font-size: 0.9rem; }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #ff6a00;
            --primary-dark: #e05500;
            --primary-light: #ff8c38;
            --secondary: #7c3aed;
            --secondary-light: #a78bfa;
            --accent: #f59e0b;
            --bg-dark: #0b0e17;
            --bg-darker: #070a12;
            --bg-card: #13182a;
            --bg-card-hover: #1a2140;
            --bg-section: #0f1525;
            --text-white: #f1f5f9;
            --text-light: #cbd5e1;
            --text-muted: #8899b4;
            --border-color: rgba(255, 106, 0, 0.15);
            --border-glow: rgba(255, 106, 0, 0.25);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(255, 106, 0, 0.15);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 72px;
            --nav-channel-h: 52px;
            --total-header-h: calc(var(--header-h) + var(--nav-channel-h));
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-white);
            line-height: 1.25;
            font-weight: 700;
        }
        ::selection {
            background: var(--primary);
            color: #fff;
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-darker);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-dark);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary);
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Brand Row ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11, 14, 23, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .header-brand-row {
            height: var(--header-h);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            transition: opacity var(--transition);
        }
        .logo:hover {
            opacity: 0.9;
            color: var(--text-white);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 10px;
            font-size: 20px;
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 106, 0, 0.3);
        }
        .logo span {
            color: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-actions .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 40px;
            padding: 0 16px;
            height: 40px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-actions .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.15);
        }
        .header-actions .search-box input {
            background: none;
            border: none;
            outline: none;
            color: var(--text-white);
            padding: 0 8px;
            width: 160px;
            font-size: 14px;
        }
        .header-actions .search-box input::placeholder {
            color: var(--text-muted);
        }
        .header-actions .search-box button {
            color: var(--text-muted);
            font-size: 16px;
            transition: color var(--transition);
        }
        .header-actions .search-box button:hover {
            color: var(--primary);
        }
        .menu-toggle {
            display: none;
            font-size: 26px;
            color: var(--text-white);
            padding: 4px 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== Channel Navigation ===== */
        .nav-channel {
            height: var(--nav-channel-h);
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-channel::-webkit-scrollbar {
            display: none;
        }
        .nav-channel a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }
        .nav-channel a i {
            font-size: 14px;
        }
        .nav-channel a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-channel a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 20px rgba(255, 106, 0, 0.3);
        }
        .nav-channel a.active:hover {
            box-shadow: 0 6px 28px rgba(255, 106, 0, 0.4);
        }

        /* ===== Mobile Menu ===== */
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(8px);
            z-index: 1999;
            opacity: 0;
            transition: opacity 0.3s;
        }
        .mobile-menu-overlay.open {
            opacity: 1;
        }
        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100%;
            background: var(--bg-card);
            border-left: 1px solid var(--border-color);
            z-index: 2000;
            padding: 24px 20px;
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
            box-shadow: -8px 0 40px rgba(0, 0, 0, 0.5);
        }
        .mobile-menu-panel.open {
            right: 0;
        }
        .mobile-menu-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }
        .mobile-menu-header .logo {
            font-size: 20px;
        }
        .mobile-menu-close {
            font-size: 24px;
            color: var(--text-light);
            padding: 4px 8px;
            border-radius: 8px;
        }
        .mobile-menu-close:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-menu-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            transition: all var(--transition);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .mobile-menu-list a i {
            width: 24px;
            text-align: center;
            color: var(--primary);
        }
        .mobile-menu-list a:hover {
            background: rgba(255, 106, 0, 0.08);
            color: var(--text-white);
        }
        .mobile-menu-list a.active {
            color: var(--primary);
            background: rgba(255, 106, 0, 0.12);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            margin-top: var(--total-header-h);
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(11, 14, 23, 0.92), rgba(15, 21, 37, 0.85)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 120px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
            pointer-events: none;
        }
        .page-banner .banner-content {
            text-align: center;
            padding: 60px 24px 80px;
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .page-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 106, 0, 0.15);
            border: 1px solid rgba(255, 106, 0, 0.25);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-light);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .page-banner .banner-badge i {
            font-size: 14px;
        }
        .page-banner h1 {
            font-size: clamp(32px, 5vw, 56px);
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 40%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .page-banner .banner-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .page-banner .banner-stats .stat-item {
            text-align: center;
        }
        .page-banner .banner-stats .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-white);
        }
        .page-banner .banner-stats .stat-num span {
            color: var(--primary);
        }
        .page-banner .banner-stats .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section);
        }
        .section-dark {
            background: var(--bg-darker);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: clamp(26px, 3.6vw, 38px);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .section-header h2 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 17px;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .header-line {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== Category Tabs ===== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 40px;
        }
        .category-tabs .tab-btn {
            padding: 10px 24px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .category-tabs .tab-btn:hover {
            color: var(--text-white);
            border-color: rgba(255, 106, 0, 0.3);
            background: rgba(255, 106, 0, 0.06);
        }
        .category-tabs .tab-btn.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-color: transparent;
            box-shadow: 0 4px 20px rgba(255, 106, 0, 0.25);
        }

        /* ===== Guide Cards Grid ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow), var(--shadow-md);
            background: var(--bg-card-hover);
        }
        .guide-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .card-img img {
            transform: scale(1.06);
        }
        .guide-card .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 2px 12px rgba(255, 106, 0, 0.3);
        }
        .guide-card .card-img .card-difficulty {
            position: absolute;
            bottom: 12px;
            right: 12px;
            padding: 4px 12px;
            border-radius: 40px;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-white);
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .guide-card .card-body {
            padding: 20px;
        }
        .guide-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card .card-body h3 a {
            color: var(--text-white);
        }
        .guide-card .card-body h3 a:hover {
            color: var(--primary-light);
        }
        .guide-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .guide-card .card-meta .meta-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .guide-card .card-meta .meta-left i {
            color: var(--primary);
            width: 14px;
        }
        .guide-card .card-meta .meta-right {
            color: var(--accent);
            font-weight: 600;
        }

        /* ===== Featured Guide (Large) ===== */
        .featured-guide {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            margin-bottom: 48px;
        }
        .featured-guide .fg-img {
            min-height: 320px;
            overflow: hidden;
        }
        .featured-guide .fg-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .featured-guide:hover .fg-img img {
            transform: scale(1.04);
        }
        .featured-guide .fg-body {
            padding: 32px 32px 32px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-guide .fg-body .fg-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: var(--secondary);
            margin-bottom: 16px;
            width: fit-content;
        }
        .featured-guide .fg-body h2 {
            font-size: clamp(22px, 3vw, 32px);
            font-weight: 800;
            margin-bottom: 12px;
            line-height: 1.2;
        }
        .featured-guide .fg-body p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .featured-guide .fg-body .fg-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .featured-guide .fg-body .fg-meta i {
            color: var(--primary);
        }
        .featured-guide .fg-body .btn-read {
            align-self: flex-start;
            margin-top: 8px;
        }
        @media (max-width: 820px) {
            .featured-guide {
                grid-template-columns: 1fr;
            }
            .featured-guide .fg-body {
                padding: 24px;
            }
            .featured-guide .fg-img {
                min-height: 220px;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 700;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(255, 106, 0, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(255, 106, 0, 0.4);
            color: #fff;
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
        }

        /* ===== Tags ===== */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-light);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .tag:hover {
            color: var(--text-white);
            border-color: var(--primary);
            background: rgba(255, 106, 0, 0.08);
            transform: translateY(-2px);
        }
        .tag i {
            color: var(--primary);
            font-size: 12px;
        }

        /* ===== Leaderboard / Rank ===== */
        .rank-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 20px;
        }
        .rank-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .rank-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .rank-card .rank-num {
            font-size: 32px;
            font-weight: 900;
            color: var(--text-muted);
            line-height: 1;
            min-width: 44px;
            text-align: center;
        }
        .rank-card .rank-num.top {
            background: linear-gradient(135deg, var(--accent), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .rank-card .rank-info {
            flex: 1;
        }
        .rank-card .rank-info h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .rank-card .rank-info p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .rank-card .rank-score {
            font-size: 18px;
            font-weight: 800;
            color: var(--accent);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 106, 0, 0.2);
        }
        .faq-item .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            cursor: pointer;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-item .faq-q:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-item .faq-q i {
            color: var(--primary);
            font-size: 14px;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-card), var(--bg-section)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
            padding: 80px 0;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 14, 23, 0.7);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 900;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-muted);
            font-size: 18px;
            max-width: 540px;
            margin: 0 auto 28px;
        }
        .cta-section .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        .footer-brand .logo {
            font-size: 22px;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .footer-col a i {
            font-size: 10px;
            color: var(--primary);
        }
        .footer-col a:hover {
            color: var(--text-white);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            font-size: 18px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 768px) {
            .header-actions .search-box {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .nav-channel {
                padding: 0 16px;
                gap: 2px;
            }
            .nav-channel a {
                padding: 6px 14px;
                font-size: 13px;
            }
            .nav-channel a i {
                display: none;
            }
            .page-banner {
                min-height: 260px;
            }
            .page-banner .banner-content {
                padding: 40px 16px 60px;
            }
            .page-banner .banner-stats {
                gap: 20px;
            }
            .section {
                padding: 48px 0;
            }
            .guide-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .rank-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .rank-grid {
                grid-template-columns: 1fr;
            }
            .category-tabs .tab-btn {
                padding: 8px 16px;
                font-size: 13px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .page-banner p {
                font-size: 15px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section .cta-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp 0.6s ease forwards;
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c3bf1;
            --primary-dark: #5228c9;
            --primary-light: #8b5cf6;
            --primary-gradient: linear-gradient(135deg, #6c3bf1 0%, #a855f7 100%);
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #ec4899;
            --accent-gradient: linear-gradient(135deg, #ec4899 0%, #f472b6 100%);
            --bg-dark: #0f0a1e;
            --bg-darker: #080512;
            --bg-card: #1a122e;
            --bg-card-hover: #22183a;
            --bg-section: #120b22;
            --bg-section-alt: #1a122e;
            --text-primary: #f1f0f6;
            --text-secondary: #b0a8c8;
            --text-muted: #7a729a;
            --border-color: #2d2048;
            --border-light: #3d2d5a;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(108, 59, 241, 0.12);
            --shadow-md: 0 8px 28px rgba(108, 59, 241, 0.18);
            --shadow-lg: 0 16px 48px rgba(108, 59, 241, 0.25);
            --shadow-glow: 0 0 40px rgba(108, 59, 241, 0.15);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 70px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-dark);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        ::selection {
            background: var(--primary);
            color: #fff;
        }
        :focus-visible {
            outline: 2px dashed var(--secondary);
            outline-offset: 3px;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 10, 30, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary-gradient);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: 0 4px 15px rgba(108, 59, 241, 0.4);
        }
        .logo span {
            color: var(--secondary);
        }
        .logo:hover {
            color: var(--text-primary);
        }

        /* Channel Navigation */
        .nav-channel {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-channel a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-channel a i {
            font-size: 14px;
        }
        .nav-channel a:hover {
            color: var(--text-primary);
            background: rgba(108, 59, 241, 0.15);
            border-color: var(--border-light);
            transform: translateY(-1px);
        }
        .nav-channel a.active {
            color: #fff;
            background: var(--primary-gradient);
            border-color: var(--primary);
            box-shadow: 0 4px 20px rgba(108, 59, 241, 0.35);
        }
        .nav-channel a.active:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 30px rgba(108, 59, 241, 0.5);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: transparent;
            border: none;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(108, 59, 241, 0.15);
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-channel {
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(15, 10, 30, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 8px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
                display: none;
                max-height: 70vh;
                overflow-y: auto;
            }
            .nav-channel.open {
                display: flex;
            }
            .nav-channel a {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 15px;
            }
            .header-inner {
                flex-wrap: wrap;
            }
        }

        /* ===== Banner / Hero ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 70px;
            background: var(--bg-darker);
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            transform: scale(1.02);
        }
        .page-banner::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(108, 59, 241, 0.15) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 20%, rgba(245, 158, 11, 0.08) 0%, transparent 50%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(108, 59, 241, 0.2);
            border: 1px solid rgba(108, 59, 241, 0.3);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-light);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .page-banner .banner-badge i {
            font-size: 14px;
        }
        .page-banner h1 {
            font-size: clamp(32px, 5vw, 56px);
            font-weight: 800;
            background: linear-gradient(135deg, #f1f0f6 0%, #c4b5fd 50%, #a78bfa 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .page-banner p {
            font-size: clamp(16px, 2vw, 20px);
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .page-banner .banner-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .page-banner .banner-stats .stat-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
        }
        .page-banner .banner-stats .stat-item .num {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner .banner-stats .stat-item .label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title h2 {
            font-size: clamp(28px, 3.6vw, 40px);
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-title h2 span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-title .title-tag {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(108, 59, 241, 0.15);
            border: 1px solid rgba(108, 59, 241, 0.2);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-light);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        /* ===== Cards Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }
        .card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 12px;
            background: rgba(108, 59, 241, 0.15);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-light);
            margin-bottom: 10px;
            width: fit-content;
            border: 1px solid rgba(108, 59, 241, 0.15);
        }
        .card .card-tag i {
            font-size: 11px;
        }
        .card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card h3 a {
            color: var(--text-primary);
        }
        .card h3 a:hover {
            color: var(--primary-light);
        }
        .card p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.6;
            flex: 1;
        }
        .card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
        }
        .card .card-meta i {
            margin-right: 4px;
            font-size: 12px;
        }
        .card .card-meta a {
            color: var(--text-muted);
        }
        .card .card-meta a:hover {
            color: var(--primary-light);
        }

        /* ===== Feature / Icon Blocks ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
            background: var(--bg-card-hover);
        }
        .feature-card .icon-box {
            width: 60px;
            height: 60px;
            margin: 0 auto 18px;
            border-radius: 16px;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: #fff;
            box-shadow: 0 8px 24px rgba(108, 59, 241, 0.3);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== Steps / Timeline ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
            position: relative;
        }
        .step-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .step-item .step-num {
            width: 44px;
            height: 44px;
            margin: 0 auto 14px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 59, 241, 0.3);
        }
        .step-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-primary);
            transition: background var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover {
            background: rgba(108, 59, 241, 0.08);
        }
        .faq-item .faq-q i {
            font-size: 18px;
            color: var(--primary-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: radial-gradient(ellipse at center, rgba(108, 59, 241, 0.1) 0%, transparent 70%);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: clamp(28px, 3.6vw, 40px);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 540px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            border: none;
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 8px 28px rgba(108, 59, 241, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(108, 59, 241, 0.5);
            color: #fff;
        }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--border-light);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background: rgba(108, 59, 241, 0.1);
            transform: translateY(-3px);
            color: var(--text-primary);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 22px;
            margin-bottom: 14px;
        }
        .footer-brand .logo .logo-icon {
            width: 36px;
            height: 36px;
            font-size: 17px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 5px 0;
            font-size: 14px;
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .footer-col a i {
            font-size: 11px;
            color: var(--primary-light);
        }
        .footer-col a:hover {
            color: var(--text-primary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-social {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 17px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary-gradient);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(108, 59, 241, 0.3);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
            .page-banner {
                padding: 50px 0 40px;
            }
            .page-banner .banner-stats {
                gap: 24px;
            }
            .card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .btn {
                padding: 12px 26px;
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .page-banner .banner-stats .stat-item .num {
                font-size: 22px;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-item .faq-a {
                padding: 0 16px 14px;
                font-size: 14px;
            }
        }

        /* ===== Utility ===== */
        .text-gradient {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 28px;
        }
        .text-center {
            text-align: center;
        }
        .gap-1 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: category3 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #ff6b35;
            --primary-light: #ff8a5c;
            --primary-dark: #e55a2b;
            --secondary: #7c3aed;
            --secondary-light: #a78bfa;
            --accent: #f59e0b;
            --bg-dark: #0f0f1a;
            --bg-dark2: #1a1a2e;
            --bg-card: #1e1e3a;
            --bg-card-hover: #252550;
            --bg-section: #12122a;
            --text-white: #ffffff;
            --text-light: #e2e8f0;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.15);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(255, 107, 53, 0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-main: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 72px;
            --nav-channel-h: 52px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-white);
            font-weight: 700;
            line-height: 1.25;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 版块通用 ===== */
        .section-pad {
            padding: 80px 0;
        }
        .section-pad-sm {
            padding: 56px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-title .highlight {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-sub {
            text-align: center;
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 680px;
            margin: 0 auto 48px;
        }
        .section-sub i {
            color: var(--primary);
            margin-right: 6px;
        }
        .badge {
            display: inline-block;
            background: rgba(255, 107, 53, 0.15);
            color: var(--primary-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            border: 1px solid rgba(255, 107, 53, 0.2);
        }
        .badge-accent {
            background: rgba(124, 58, 237, 0.2);
            color: var(--secondary-light);
            border-color: rgba(124, 58, 237, 0.25);
        }
        .badge-gold {
            background: rgba(245, 158, 11, 0.18);
            color: var(--accent);
            border-color: rgba(245, 158, 11, 0.25);
        }
        .divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 16px auto 32px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
            color: #fff;
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--border-light);
            color: var(--text-light);
            box-shadow: none;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--primary);
            color: var(--primary-light);
            box-shadow: none;
        }
        .btn-secondary {
            background: var(--secondary);
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
        }
        .btn-secondary:hover {
            background: #6d28d9;
            box-shadow: 0 8px 25px rgba(124, 58, 237, 0.4);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
        }
        .btn i {
            font-size: 0.9em;
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }
        .logo:hover {
            color: var(--text-white);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 10px;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
        }
        .logo span {
            color: var(--primary);
        }
        .logo small {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.5px;
            margin-left: 4px;
        }

        /* 频道导航行 */
        .nav-channel {
            display: flex;
            align-items: center;
            gap: 4px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-md);
            padding: 4px 6px;
            border: 1px solid var(--border-color);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-channel::-webkit-scrollbar {
            display: none;
        }
        .nav-channel a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-channel a i {
            font-size: 0.85rem;
        }
        .nav-channel a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-channel a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
        }
        .nav-channel a.active i {
            color: #fff;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.5rem;
            padding: 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        /* 移动端导航抽屉 */
        .nav-drawer {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 15, 26, 0.98);
            backdrop-filter: blur(20px);
            z-index: 999;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
            transform: translateX(100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .nav-drawer.open {
            transform: translateX(0);
        }
        .nav-drawer a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 20px;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-drawer a i {
            width: 24px;
            text-align: center;
            font-size: 1.1rem;
        }
        .nav-drawer a:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-light);
        }
        .nav-drawer a.active {
            color: #fff;
            background: rgba(255, 107, 53, 0.15);
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0f0f1a 0%, #1a1a3e 50%, #0f0f1a 100%);
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 107, 53, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(124, 58, 237, 0.08) 0%, transparent 60%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero .badge {
            margin-bottom: 16px;
            font-size: 0.9rem;
            padding: 6px 20px;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 900;
            margin-bottom: 16px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, #fff 40%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .page-hero .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .page-hero .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .page-hero .hero-stats .stat-item {
            text-align: center;
        }
        .page-hero .hero-stats .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            display: block;
            line-height: 1.2;
        }
        .page-hero .hero-stats .stat-num i {
            color: var(--primary);
            font-size: 1.4rem;
            margin-right: 4px;
        }
        .page-hero .hero-stats .stat-label {
            font-size: 0.85rem;
            color: var(--text-dim);
            margin-top: 4px;
        }

        /* ===== 社区圈子 ===== */
        .circles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
            margin-top: 16px;
        }
        .circle-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .circle-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }
        .circle-card:hover::before {
            opacity: 1;
        }
        .circle-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .circle-card .circle-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 16px;
            background: rgba(255, 107, 53, 0.12);
            color: var(--primary-light);
        }
        .circle-card:nth-child(2) .circle-icon {
            background: rgba(124, 58, 237, 0.12);
            color: var(--secondary-light);
        }
        .circle-card:nth-child(3) .circle-icon {
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent);
        }
        .circle-card:nth-child(4) .circle-icon {
            background: rgba(16, 185, 129, 0.12);
            color: #34d399;
        }
        .circle-card:nth-child(5) .circle-icon {
            background: rgba(59, 130, 246, 0.12);
            color: #60a5fa;
        }
        .circle-card:nth-child(6) .circle-icon {
            background: rgba(236, 72, 153, 0.12);
            color: #f472b6;
        }
        .circle-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .circle-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .circle-card .circle-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-dim);
        }
        .circle-card .circle-meta i {
            margin-right: 4px;
        }
        .circle-card .circle-meta .online {
            color: #34d399;
        }

        /* ===== 热门话题 ===== */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 24px;
        }
        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .topic-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .topic-card .topic-header {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 12px;
        }
        .topic-card .topic-header .topic-tag {
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(255, 107, 53, 0.12);
            color: var(--primary-light);
            white-space: nowrap;
        }
        .topic-card .topic-header .topic-tag.hot {
            background: rgba(245, 158, 11, 0.15);
            color: var(--accent);
        }
        .topic-card .topic-header .topic-tag.new {
            background: rgba(16, 185, 129, 0.12);
            color: #34d399;
        }
        .topic-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 4px;
            flex: 1;
        }
        .topic-card h3 a {
            color: var(--text-white);
        }
        .topic-card h3 a:hover {
            color: var(--primary-light);
        }
        .topic-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .topic-card .topic-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-dim);
            padding-top: 8px;
            border-top: 1px solid var(--border-color);
        }
        .topic-card .topic-footer .topic-author {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .topic-card .topic-footer .topic-author img {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            object-fit: cover;
        }
        .topic-card .topic-footer .topic-actions {
            display: flex;
            gap: 12px;
        }
        .topic-card .topic-footer .topic-actions i {
            margin-right: 4px;
        }

        /* ===== 社区活动 ===== */
        .activities-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .activity-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .activity-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }
        .activity-card .activity-img {
            height: 180px;
            background: linear-gradient(135deg, #1a1a3e, #2a1a4e);
            position: relative;
            overflow: hidden;
        }
        .activity-card .activity-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .activity-card .activity-img .activity-status {
            position: absolute;
            top: 12px;
            right: 12px;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(16, 185, 129, 0.9);
            color: #fff;
            backdrop-filter: blur(4px);
        }
        .activity-card .activity-img .activity-status.ended {
            background: rgba(100, 116, 139, 0.85);
        }
        .activity-card .activity-img .activity-status.coming {
            background: rgba(245, 158, 11, 0.9);
        }
        .activity-card .activity-body {
            padding: 20px;
        }
        .activity-card .activity-body h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .activity-card .activity-body p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .activity-card .activity-body .activity-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-dim);
        }
        .activity-card .activity-body .activity-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        /* ===== 社区数据统计 ===== */
        .stats-section {
            background: linear-gradient(135deg, #1a1a2e 0%, #0f0f1a 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 32px;
            text-align: center;
        }
        .stats-grid .stat-card {
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.02);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stats-grid .stat-card:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: var(--border-light);
        }
        .stats-grid .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stats-grid .stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-white);
            display: block;
            line-height: 1.2;
        }
        .stats-grid .stat-card .stat-number .plus {
            color: var(--primary);
        }
        .stats-grid .stat-card .stat-label {
            color: var(--text-dim);
            font-size: 0.9rem;
            margin-top: 6px;
        }

        /* ===== 玩家风采 / 图文 ===== */
        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 20px;
        }
        .showcase-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            aspect-ratio: 1 / 1;
        }
        .showcase-card:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }
        .showcase-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .showcase-card .showcase-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
            color: #fff;
        }
        .showcase-card .showcase-overlay h4 {
            font-size: 0.95rem;
            margin-bottom: 4px;
        }
        .showcase-card .showcase-overlay p {
            font-size: 0.8rem;
            opacity: 0.8;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--text-white);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 1rem;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover {
            color: var(--primary-light);
        }
        .faq-item .faq-q i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1a1a3e 0%, #0f0f1a 100%);
            border-top: 1px solid var(--border-color);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0a0a16;
            border-top: 1px solid var(--border-color);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: var(--text-dim);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.88rem;
            color: var(--text-dim);
            transition: var(--transition);
        }
        .footer-col a i {
            font-size: 0.65rem;
            margin-right: 6px;
            color: var(--primary);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom span {
            color: var(--text-dim);
            font-size: 0.82rem;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-dim);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .page-hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .nav-channel {
                display: none;
            }
            .nav-drawer {
                display: flex;
            }
            .page-hero {
                padding: 72px 0 56px;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .page-hero .hero-stats {
                gap: 24px;
            }
            .page-hero .hero-stats .stat-num {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-sub {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
            .topics-grid {
                grid-template-columns: 1fr;
            }
            .circles-grid {
                grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            }
            .activities-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .showcase-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .section-pad {
                padding: 48px 0;
            }
            .section-pad-sm {
                padding: 36px 0;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 12px;
                height: 62px;
            }
            .logo {
                font-size: 1.15rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero .hero-stats .stat-num {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .circles-grid {
                grid-template-columns: 1fr;
            }
            .showcase-grid {
                grid-template-columns: 1fr;
            }
            .btn-lg {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stats-grid .stat-card .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--text-dim);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== 选中高亮 ===== */
        ::selection {
            background: rgba(255, 107, 53, 0.3);
            color: #fff;
        }

        /* ===== 动画辅助 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }