/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #6c5ce7;
  --primary-dark: #5a4bd1;
  --primary-light: #a29bfe;
  --secondary: #fd79a8;
  --accent: #fdcb6e;
  --accent-dark: #f0b830;
  --bg: #0b0b1c;
  --bg-card: #16162e;
  --bg-card-hover: #1f1f42;
  --bg-sidebar: #0e0e24;
  --text: #edecf5;
  --text-light: #9898b8;
  --text-muted: #6b6b8a;
  --border: #25254a;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  --shadow-hover: 0 12px 48px rgba(108, 92, 231, 0.25);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --sidebar-width: 220px;
  --header-h: 0px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
}
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: 1rem; outline: none; border: none; }
ul, ol { list-style: none; }
/* ===== 左侧导航 ===== */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  padding: 24px 0 20px;
  overflow-y: auto;
  transition: var(--transition);
}
.sidebar-logo {
  padding: 0 20px 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
}
.sidebar-logo a {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-logo a i { color: var(--primary-light); font-size: 1.6rem; }
.sidebar-logo a span { background: linear-gradient(135deg, var(--primary-light), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.sidebar-nav { flex: 1; padding: 0 12px; }
.sidebar-nav .nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  margin-bottom: 4px;
  border-radius: var(--radius-sm);
  color: var(--text-light);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  cursor: pointer;
}
.sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 1.1rem; }
.sidebar-nav .nav-item:hover { background: rgba(108, 92, 231, 0.12); color: var(--text); }
.sidebar-nav .nav-item.active { background: rgba(108, 92, 231, 0.2); color: var(--primary-light); font-weight: 600; }
.sidebar-nav .nav-item.active i { color: var(--primary-light); }
.sidebar-footer {
  padding: 20px 20px 0;
  border-top: 1px solid var(--border);
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}
/* ===== 主内容区 ===== */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
/* ===== 容器 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 24px 60px;
  overflow: hidden;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 11, 28, 0.88) 0%, rgba(22, 22, 46, 0.75) 50%, rgba(11, 11, 28, 0.9) 100%);
  z-index: 1;
}
.hero > * { position: relative; z-index: 2; }
.hero-content { max-width: 720px; }
.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 30%, var(--primary-light) 70%, var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.15rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 34px;
  border-radius: 60px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 20px rgba(108, 92, 231, 0.35); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 8px 32px rgba(108, 92, 231, 0.45); color: #fff; }
.btn-outline { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn-outline:hover { border-color: var(--primary-light); color: var(--primary-light); transform: translateY(-3px); }
/* ===== 板块通用 ===== */
.section { padding: 80px 0; }
.section-tag {
  display: inline-block;
  background: rgba(108, 92, 231, 0.15);
  color: var(--primary-light);
  padding: 6px 18px;
  border-radius: 60px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
}
.section-desc {
  color: var(--text-light);
  max-width: 620px;
  margin-bottom: 40px;
  font-size: 1.05rem;
}
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
/* ===== 特色卡片网格 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.card:hover { background: var(--bg-card-hover); border-color: rgba(108, 92, 231, 0.3); transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
  background: rgba(108, 92, 231, 0.15);
  color: var(--primary-light);
}
.card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: #fff; }
.card p { color: var(--text-light); font-size: 0.92rem; line-height: 1.6; }
/* ===== 分类入口 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.cat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(108, 92, 231, 0.3); }
.cat-card img { width: 100%; height: 180px; object-fit: cover; border-bottom: 1px solid var(--border); }
.cat-card-body { padding: 18px 20px 22px; }
.cat-card-body h4 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 6px; }
.cat-card-body p { color: var(--text-light); font-size: 0.85rem; }
.cat-card-body .badge {
  display: inline-block;
  background: rgba(253, 121, 168, 0.15);
  color: var(--secondary);
  padding: 2px 12px;
  border-radius: 60px;
  font-size: 0.7rem;
  font-weight: 600;
  margin-top: 10px;
}
/* ===== 最新资讯列表 ===== */
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.news-item:hover { background: var(--bg-card-hover); border-color: rgba(108, 92, 231, 0.25); transform: translateX(6px); }
.news-item .num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  background: rgba(108, 92, 231, 0.12);
  color: var(--primary-light);
  flex-shrink: 0;
}
.news-item .info { flex: 1; }
.news-item .info h4 { font-size: 0.98rem; font-weight: 600; color: #fff; margin-bottom: 4px; }
.news-item .info p { color: var(--text-light); font-size: 0.83rem; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.news-item .meta { color: var(--text-muted); font-size: 0.75rem; white-space: nowrap; flex-shrink: 0; }
/* ===== 数据/流程 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 16px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.stat-card:hover { background: var(--bg-card-hover); transform: translateY(-4px); }
.stat-card .num { font-size: 2.2rem; font-weight: 800; background: linear-gradient(135deg, var(--primary-light), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-card .label { color: var(--text-light); font-size: 0.9rem; margin-top: 6px; }
/* ===== 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);
  border-radius: var(--radius-sm);
  padding: 18px 24px;
  transition: var(--transition);
  cursor: pointer;
}
.faq-item:hover { border-color: rgba(108, 92, 231, 0.2); }
.faq-item .q { display: flex; justify-content: space-between; align-items: center; font-weight: 600; color: #fff; font-size: 0.98rem; }
.faq-item .q i { color: var(--text-muted); transition: var(--transition); }
.faq-item.open .q i { transform: rotate(180deg); color: var(--primary-light); }
.faq-item .a { margin-top: 10px; color: var(--text-light); font-size: 0.9rem; line-height: 1.7; display: none; }
.faq-item.open .a { display: block; }
/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, rgba(108, 92, 231, 0.12) 0%, rgba(253, 121, 168, 0.08) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
}
.cta-section h2 { font-size: 1.8rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
.cta-section p { color: var(--text-light); max-width: 500px; margin: 0 auto 28px; }
/* ===== 页脚 ===== */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 40px 0 30px;
  background: var(--bg-sidebar);
}
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.footer-copy { color: var(--text-muted); font-size: 0.82rem; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text-light); font-size: 0.82rem; }
.footer-links a:hover { color: var(--primary-light); }
/* ===== 移动端菜单按钮 ===== */
.mobile-toggle { display: none; position: fixed; top: 16px; left: 16px; z-index: 200; background: var(--bg-card); border: 1px solid var(--border); color: #fff; width: 44px; height: 44px; border-radius: var(--radius-sm); font-size: 1.3rem; cursor: pointer; align-items: center; justify-content: center; }
.overlay { display: none; }
/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 2.4rem; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .mobile-toggle { display: flex; }
  .overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 99; }
  .overlay.show { display: block; }
  .hero { min-height: 400px; padding: 60px 20px 40px; }
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 0.95rem; }
  .section { padding: 50px 0; }
  .section-title { font-size: 1.5rem; }
  .feature-grid { grid-template-columns: 1fr; gap: 16px; }
  .category-grid { grid-template-columns: 1fr; gap: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .news-item { flex-wrap: wrap; gap: 12px; }
  .news-item .meta { width: 100%; text-align: left; }
  .cta-section { padding: 40px 20px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .container { padding: 0 16px; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.5rem; }
  .hero p { font-size: 0.88rem; }
  .btn { padding: 12px 24px; font-size: 0.85rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .sidebar { width: 100%; max-width: 280px; }
}

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c5ce7;
            --primary-light: #a29bfe;
            --primary-dark: #4834d4;
            --secondary: #fd79a8;
            --secondary-light: #fab1c8;
            --accent: #fdcb6e;
            --bg-main: #0a0a1a;
            --bg-card: #151530;
            --bg-card-hover: #1c1c45;
            --bg-nav: #0d0d25;
            --bg-section: #0f0f2a;
            --text-primary: #f0f0ff;
            --text-secondary: #b0b0d0;
            --text-muted: #7070a0;
            --border-color: #2a2a5a;
            --border-light: #3a3a6a;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 12px rgba(108, 92, 231, 0.08);
            --shadow-md: 0 8px 32px rgba(108, 92, 231, 0.15);
            --shadow-lg: 0 16px 56px rgba(108, 92, 231, 0.22);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --sidebar-width: 240px;
            --header-height: 0px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Layout: Sidebar + Main ===== */
        .app-layout {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }

        /* ===== Sidebar Navigation ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-nav);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            backdrop-filter: blur(20px);
            padding: 0;
            transition: var(--transition);
        }
        .sidebar-brand {
            padding: 28px 24px 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-brand .logo {
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-brand .logo i {
            font-size: 1.6rem;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .sidebar-nav {
            flex: 1;
            padding: 16px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .sidebar-nav .nav-item i {
            width: 22px;
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .sidebar-nav .nav-item:hover {
            background: rgba(108, 92, 231, 0.1);
            color: var(--text-primary);
        }
        .sidebar-nav .nav-item:hover i {
            color: var(--primary-light);
        }
        .sidebar-nav .nav-item.active {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(253, 121, 168, 0.1));
            color: var(--text-primary);
            border: 1px solid rgba(108, 92, 231, 0.25);
        }
        .sidebar-nav .nav-item.active i {
            color: var(--primary-light);
        }
        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: -12px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: linear-gradient(180deg, var(--primary), var(--secondary));
            border-radius: 0 4px 4px 0;
        }
        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border-color);
            font-size: 0.8rem;
            color: var(--text-muted);
            text-align: center;
        }

        /* ===== Main Content Area ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Article Header / Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(160deg, rgba(108, 92, 231, 0.12), rgba(253, 121, 168, 0.06));
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--text-muted);
        }
        .article-breadcrumb a:hover {
            color: var(--primary-light);
        }
        .article-breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-muted);
        }
        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .article-category-badge i {
            font-size: 0.75rem;
        }
        .article-title {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            max-width: 900px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            color: var(--text-muted);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--primary-light);
            font-size: 0.85rem;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 60px 0;
            flex: 1;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 40px 44px;
            box-shadow: var(--shadow-md);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-body .content p {
            margin-bottom: 1.4em;
        }
        .article-body .content h2,
        .article-body .content h3 {
            color: var(--text-primary);
            margin-top: 1.8em;
            margin-bottom: 0.6em;
        }
        .article-body .content h2 {
            font-size: 1.6rem;
        }
        .article-body .content h3 {
            font-size: 1.25rem;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-body .content li {
            margin-bottom: 0.5em;
            list-style: disc;
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 1.6em 0;
            background: rgba(108, 92, 231, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
        }
        .article-body .content a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content a:hover {
            color: var(--secondary);
        }

        /* ===== Article Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
            position: sticky;
            top: 24px;
        }
        .sidebar-widget {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-widget-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
        }
        .sidebar-widget-title i {
            color: var(--primary-light);
        }
        .sidebar-widget .related-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-widget .related-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.02);
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
        }
        .sidebar-widget .related-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateX(4px);
        }
        .sidebar-widget .related-item img {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .sidebar-widget .related-item .related-info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-widget .related-item .related-info h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-widget .related-item .related-info .related-date {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .sidebar-widget .category-list {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .sidebar-widget .category-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .sidebar-widget .category-list a:hover {
            background: rgba(108, 92, 231, 0.08);
            border-color: var(--border-light);
            color: var(--text-primary);
        }
        .sidebar-widget .category-list a i {
            width: 20px;
            color: var(--primary-light);
            font-size: 0.85rem;
        }
        .sidebar-widget .category-list a .count {
            margin-left: auto;
            background: rgba(108, 92, 231, 0.15);
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 0.75rem;
            color: var(--primary-light);
        }

        /* ===== Share Widget ===== */
        .share-buttons {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .share-buttons .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 1rem;
            transition: var(--transition);
            cursor: pointer;
        }
        .share-buttons .share-btn:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.3);
        }

        /* ===== Article Navigation ===== */
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 22px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            max-width: 48%;
        }
        .article-nav a:hover {
            background: var(--bg-card-hover);
            border-color: var(--primary);
            color: var(--text-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .article-nav a i {
            font-size: 0.85rem;
            color: var(--primary-light);
        }
        .article-nav .nav-next {
            text-align: right;
            flex-direction: row-reverse;
        }

        /* ===== Related Articles Section ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section .section-title i {
            color: var(--primary-light);
        }
        .related-section .section-desc {
            color: var(--text-muted);
            margin-bottom: 32px;
            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-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            cursor: pointer;
        }
        .related-card:hover {
            border-color: var(--primary);
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px 22px;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .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 .card-body .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .related-card .card-body .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .related-card .card-body .card-meta i {
            color: var(--primary-light);
            font-size: 0.7rem;
        }

        /* ===== Not Found State ===== */
        .not-found-state {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-state i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            opacity: 0.5;
        }
        .not-found-state h2 {
            font-size: 1.8rem;
            margin-bottom: 12px;
        }
        .not-found-state p {
            color: var(--text-muted);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }
        .not-found-state .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .not-found-state .btn-back:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(108, 92, 231, 0.35);
            color: #fff;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-nav);
            border-top: 1px solid var(--border-color);
            padding: 32px 0;
            margin-top: auto;
        }
        .footer .footer-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer .footer-copy {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer .footer-links a:hover {
            color: var(--primary-light);
        }

        /* ===== Mobile Toggle ===== */
        .sidebar-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            font-size: 1.3rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .sidebar-toggle:hover {
            background: var(--bg-card-hover);
            border-color: var(--primary);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.active {
                display: block;
            }
            .sidebar-toggle {
                display: flex;
            }
            .main-content {
                margin-left: 0;
            }
            .article-banner {
                padding: 60px 0 40px;
            }
            .article-title {
                font-size: 1.8rem;
            }
            .article-body {
                padding: 24px 20px;
            }
            .article-body .content {
                font-size: 0.98rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-nav {
                flex-direction: column;
            }
            .article-nav a {
                max-width: 100%;
            }
            .article-nav .nav-next {
                text-align: left;
                flex-direction: row;
            }
            .footer .footer-inner {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-title {
                font-size: 1.4rem;
            }
            .article-meta {
                font-size: 0.8rem;
                gap: 12px;
            }
            .article-body {
                padding: 18px 14px;
                border-radius: var(--radius-md);
            }
            .article-body .content {
                font-size: 0.92rem;
            }
            .sidebar-widget {
                padding: 18px;
            }
            .related-card .card-img {
                height: 140px;
            }
            .related-card .card-body {
                padding: 16px;
            }
            .related-section .section-title {
                font-size: 1.3rem;
            }
            .share-buttons .share-btn {
                width: 36px;
                height: 36px;
                font-size: 0.9rem;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-main);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--border-light);
        }

        /* ===== Selection ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .article-banner .container {
            animation: fadeUp 0.6s ease-out;
        }
        .article-body {
            animation: fadeUp 0.6s ease-out 0.1s both;
        }
        .article-sidebar .sidebar-widget {
            animation: fadeUp 0.6s ease-out 0.2s both;
        }
        .related-section .related-card {
            animation: fadeUp 0.5s ease-out both;
        }
        .related-section .related-card:nth-child(1) {
            animation-delay: 0.05s;
        }
        .related-section .related-card:nth-child(2) {
            animation-delay: 0.1s;
        }
        .related-section .related-card:nth-child(3) {
            animation-delay: 0.15s;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c5ce7;
            --primary-light: #a29bfe;
            --primary-dark: #4a3db8;
            --secondary: #fd79a8;
            --accent: #ffeaa7;
            --bg-body: #f8f7ff;
            --bg-card: #ffffff;
            --bg-sidebar: #1e1b2e;
            --bg-sidebar-hover: #2d2846;
            --bg-hero: linear-gradient(135deg, #1e1b2e 0%, #2d2846 50%, #1e1b2e 100%);
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888aa;
            --text-light: #f0efff;
            --text-sidebar: #c8c4e0;
            --border-color: #e8e6f0;
            --border-light: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(108, 92, 231, 0.08);
            --shadow-md: 0 8px 30px rgba(108, 92, 231, 0.12);
            --shadow-lg: 0 20px 60px rgba(108, 92, 231, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --sidebar-width: 240px;
            --sidebar-collapsed: 72px;
            --header-height: 0px;
        }

        /* ===== 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);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            display: flex;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Sidebar Navigation ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: var(--transition);
            border-right: 1px solid var(--border-light);
            overflow-y: auto;
            overflow-x: hidden;
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 28px 20px 20px;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            flex-shrink: 0;
        }
        .sidebar-brand .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .sidebar-brand .brand-text span {
            color: var(--primary-light);
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            padding: 16px 12px;
            gap: 4px;
            flex: 1;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-sidebar);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .sidebar-nav .nav-item i {
            width: 22px;
            font-size: 18px;
            text-align: center;
            flex-shrink: 0;
        }
        .sidebar-nav .nav-item:hover {
            background: var(--bg-sidebar-hover);
            color: #fff;
            transform: translateX(4px);
        }
        .sidebar-nav .nav-item.active {
            background: rgba(108, 92, 231, 0.25);
            color: #fff;
            box-shadow: inset 3px 0 0 var(--primary-light);
        }
        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--primary-light);
            border-radius: 0 4px 4px 0;
        }
        .sidebar-footer {
            padding: 16px 20px 24px;
            border-top: 1px solid var(--border-light);
            color: var(--text-muted);
            font-size: 12px;
            text-align: center;
        }
        .sidebar-footer a {
            color: var(--text-muted);
        }
        .sidebar-footer a:hover {
            color: var(--primary-light);
        }

        /* ===== Main Content Area ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 999;
            background: var(--bg-sidebar);
            padding: 12px 20px;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-header .brand-text {
            color: #fff;
            font-weight: 700;
            font-size: 17px;
        }
        .mobile-header .brand-text span {
            color: var(--primary-light);
        }
        .mobile-menu-toggle {
            background: none;
            border: none;
            color: #fff;
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-menu-toggle:hover {
            background: var(--bg-sidebar-hover);
        }

        /* ===== Mobile Drawer Overlay ===== */
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            backdrop-filter: blur(4px);
        }
        .drawer-overlay.open {
            display: block;
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            background: var(--bg-hero);
            padding: 80px 0 70px;
            position: relative;
            overflow: hidden;
        }
        .category-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;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.25), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 6px 18px;
            border-radius: 100px;
            color: var(--text-light);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 20px;
        }
        .category-hero .hero-badge i {
            color: var(--accent);
        }
        .category-hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 span {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            line-height: 1.7;
        }
        .category-hero .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .category-hero .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .category-hero .hero-stats .stat-number {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .category-hero .hero-stats .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .section-header h2 span {
            color: var(--primary);
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 580px;
            margin: 0 auto;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(108, 92, 231, 0.08);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        /* ===== Guide Cards Grid ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .guide-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }
        .guide-card .card-body {
            padding: 24px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }
        .guide-card .card-tags .tag {
            background: rgba(108, 92, 231, 0.06);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 500;
        }
        .guide-card .card-tags .tag.hot {
            background: rgba(253, 121, 168, 0.12);
            color: var(--secondary);
        }
        .guide-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .guide-card h3 a {
            color: var(--text-primary);
        }
        .guide-card h3 a:hover {
            color: var(--primary);
        }
        .guide-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
        }
        .guide-card .card-meta .meta-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .guide-card .card-meta i {
            margin-right: 4px;
        }

        /* ===== Featured / Large Card ===== */
        .featured-section {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .featured-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .featured-grid .featured-img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            width: 100%;
            height: 360px;
            object-fit: cover;
        }
        .featured-grid .featured-content .badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            padding: 4px 16px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .featured-grid .featured-content h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .featured-grid .featured-content p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .featured-grid .featured-content .featured-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .featured-grid .featured-content .featured-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--text-secondary);
        }
        .featured-grid .featured-content .featured-list li i {
            color: var(--primary);
            font-size: 16px;
            width: 20px;
        }

        /* ===== Category / Topic Tabs ===== */
        .topic-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .topic-tabs .tab-btn {
            padding: 10px 24px;
            border-radius: 100px;
            border: 1px solid var(--border-color);
            background: var(--bg-card);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
        }
        .topic-tabs .tab-btn:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: rgba(108, 92, 231, 0.04);
        }
        .topic-tabs .tab-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.3);
        }

        /* ===== Process / Steps ===== */
        .steps-section {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-body);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-number {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            margin: 0 auto 16px;
            counter-increment: step;
        }
        .step-item .step-number::after {
            content: counter(step);
        }
        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            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-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: var(--transition);
            color: var(--text-primary);
        }
        .faq-item .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 14px;
        }
        .faq-item .faq-question:hover {
            background: rgba(108, 92, 231, 0.02);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-hero);
            padding: 80px 0;
            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;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 17px;
            max-width: 540px;
            margin: 0 auto 28px;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 15px;
            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: 0 4px 20px rgba(108, 92, 231, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(108, 92, 231, 0.45);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.25);
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            background: rgba(108, 92, 231, 0.15);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-sidebar);
            padding: 32px 0;
            border-top: 1px solid var(--border-light);
            margin-top: auto;
        }
        .footer .footer-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer .footer-copy {
            color: var(--text-muted);
            font-size: 13px;
        }
        .footer .footer-copy a {
            color: var(--text-muted);
        }
        .footer .footer-copy a:hover {
            color: var(--primary-light);
        }
        .footer .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer .footer-links a {
            color: var(--text-sidebar);
            font-size: 13px;
            font-weight: 500;
        }
        .footer .footer-links a:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .featured-grid .featured-img {
                height: 280px;
            }
            .category-hero h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .category-hero {
                padding: 60px 0 50px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .category-hero .hero-stats {
                gap: 24px;
            }
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .topic-tabs {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding-bottom: 8px;
                justify-content: flex-start;
                -webkit-overflow-scrolling: touch;
            }
            .topic-tabs .tab-btn {
                flex-shrink: 0;
                padding: 8px 18px;
                font-size: 13px;
            }
            .featured-grid .featured-content h2 {
                font-size: 24px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .footer .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .hero-stats .stat-number {
                font-size: 22px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .guide-card .card-img {
                height: 160px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== Scrollbar ===== */
        .sidebar::-webkit-scrollbar {
            width: 4px;
        }
        .sidebar::-webkit-scrollbar-track {
            background: var(--bg-sidebar);
        }
        .sidebar::-webkit-scrollbar-thumb {
            background: var(--bg-sidebar-hover);
            border-radius: 4px;
        }

        /* ===== Fade In Animation ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.6s ease forwards;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in:nth-child(2) {
            animation-delay: 0.1s;
        }
        .fade-in:nth-child(3) {
            animation-delay: 0.2s;
        }
        .fade-in:nth-child(4) {
            animation-delay: 0.3s;
        }
        .fade-in:nth-child(5) {
            animation-delay: 0.4s;
        }
        .fade-in:nth-child(6) {
            animation-delay: 0.5s;
        }