/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #E63946;
  --primary-dark: #C1121F;
  --primary-light: #F1FAEE;
  --secondary: #1D3557;
  --secondary-light: #457B9D;
  --accent: #FFB703;
  --bg-body: #F8F9FA;
  --bg-card: #FFFFFF;
  --bg-dark: #0F1B2D;
  --bg-dark-light: #1D3557;
  --text-primary: #1A1A2E;
  --text-secondary: #6C757D;
  --text-light: #ADB5BD;
  --text-white: #FFFFFF;
  --border-color: #E9ECEF;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --nav-width: 240px;
  --header-height: 0px;
}
/* ===== 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-body);
  display: flex;
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; }
/* ===== 布局容器 ===== */
.site-wrapper { display: flex; width: 100%; min-height: 100vh; }
/* ===== 左侧导航 ===== */
.sidebar {
  position: fixed; top: 0; left: 0; width: var(--nav-width); height: 100vh;
  background: var(--bg-dark); color: var(--text-white);
  display: flex; flex-direction: column; z-index: 1000;
  overflow-y: auto; transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
}
.sidebar-brand {
  padding: 32px 24px 24px; border-bottom: 1px solid rgba(255,255,255,0.08);
  text-align: center;
}
.sidebar-brand .logo {
  font-size: 1.5rem; font-weight: 800; letter-spacing: -0.5px;
  color: var(--text-white); display: block; line-height: 1.2;
}
.sidebar-brand .logo span { color: var(--primary); }
.sidebar-brand .logo-sub {
  font-size: 0.7rem; color: var(--text-light); margin-top: 4px;
  letter-spacing: 2px; text-transform: uppercase;
}
.sidebar-nav { flex: 1; padding: 24px 0; }
.sidebar-nav .nav-item {
  display: block; padding: 12px 28px; color: var(--text-light);
  font-size: 0.95rem; font-weight: 500; transition: var(--transition);
  border-left: 3px solid transparent; position: relative;
}
.sidebar-nav .nav-item:hover { color: var(--text-white); background: rgba(255,255,255,0.05); }
.sidebar-nav .nav-item.active { color: var(--text-white); background: rgba(230,57,70,0.15); border-left-color: var(--primary); }
.sidebar-nav .nav-item .nav-icon { margin-right: 12px; width: 20px; text-align: center; display: inline-block; }
.sidebar-footer {
  padding: 20px 24px; border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.75rem; color: var(--text-light); text-align: center;
}
/* ===== 主内容区 ===== */
.main-content {
  margin-left: var(--nav-width); flex: 1; min-height: 100vh;
  display: flex; flex-direction: column;
}
/* ===== 移动端菜单按钮 ===== */
.mobile-toggle {
  display: none; position: fixed; top: 16px; left: 16px; z-index: 1100;
  width: 44px; height: 44px; background: var(--bg-dark); color: var(--text-white);
  border-radius: var(--radius-sm); align-items: center; justify-content: center;
  font-size: 1.4rem; box-shadow: var(--shadow-md); cursor: pointer;
}
.mobile-toggle:hover { background: var(--bg-dark-light); }
.mobile-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  z-index: 999; backdrop-filter: blur(4px);
}
/* ===== Hero ===== */
.hero {
  position: relative; min-height: 85vh; display: flex; align-items: center;
  justify-content: center; text-align: center;
  background: linear-gradient(135deg, rgba(15,27,45,0.88) 0%, rgba(30,53,87,0.80) 100%),
              url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: var(--text-white); padding: 60px 32px; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 120px; background: linear-gradient(to top, var(--bg-body), transparent);
  z-index: 1;
}
.hero-content { position: relative; z-index: 2; max-width: 800px; }
.hero-badge {
  display: inline-block; background: var(--primary); color: #fff;
  padding: 6px 20px; border-radius: 50px; font-size: 0.8rem;
  font-weight: 600; letter-spacing: 1px; margin-bottom: 24px;
  text-transform: uppercase;
}
.hero h1 {
  font-size: 3.5rem; font-weight: 900; margin-bottom: 20px;
  letter-spacing: -1px; line-height: 1.1;
}
.hero h1 span { color: var(--primary); }
.hero p {
  font-size: 1.2rem; color: rgba(255,255,255,0.85); max-width: 600px;
  margin: 0 auto 32px; line-height: 1.6;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 14px 36px;
  border-radius: 50px; font-weight: 600; font-size: 1rem;
  transition: var(--transition); border: 2px solid transparent;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 25px rgba(230,57,70,0.4); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; color: #fff; transform: translateY(-2px); }
.btn-lg { padding: 16px 44px; font-size: 1.1rem; }
/* ===== 通用板块 ===== */
.section { padding: 80px 48px; }
.section-title {
  text-align: center; margin-bottom: 48px;
}
.section-title h2 {
  font-size: 2.2rem; font-weight: 800; color: var(--text-primary);
  margin-bottom: 12px;
}
.section-title p {
  color: var(--text-secondary); font-size: 1.05rem; max-width: 560px;
  margin: 0 auto; line-height: 1.6;
}
.section-title .title-accent {
  display: inline-block; width: 60px; height: 4px;
  background: var(--primary); border-radius: 4px; margin-bottom: 16px;
}
.container { max-width: 1200px; margin: 0 auto; width: 100%; }
/* ===== 品牌简介 ===== */
.about-section { background: var(--bg-card); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
}
.about-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.about-image img { width: 100%; height: 400px; object-fit: cover; transition: var(--transition); }
.about-image:hover img { transform: scale(1.03); }
.about-text h3 { font-size: 1.8rem; margin-bottom: 16px; color: var(--text-primary); }
.about-text p { color: var(--text-secondary); margin-bottom: 16px; font-size: 1rem; }
.about-text .about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.tag {
  display: inline-block; padding: 6px 18px; background: var(--primary-light);
  color: var(--primary-dark); border-radius: 50px; font-size: 0.85rem;
  font-weight: 500; border: 1px solid rgba(230,57,70,0.15);
}
/* ===== 分类入口 ===== */
.categories-section { background: var(--bg-body); }
.cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.cat-card {
  position: relative; border-radius: var(--radius-md); overflow: hidden;
  background: var(--bg-card); box-shadow: var(--shadow-sm);
  transition: var(--transition); border: 1px solid var(--border-color);
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.cat-card .cat-img { width: 100%; height: 220px; object-fit: cover; }
.cat-card .cat-body { padding: 28px 24px; }
.cat-card .cat-body h3 { font-size: 1.3rem; margin-bottom: 8px; }
.cat-card .cat-body p { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 16px; }
.cat-card .cat-link {
  display: inline-flex; align-items: center; gap: 6px; font-weight: 600;
  color: var(--primary); font-size: 0.9rem;
}
.cat-card .cat-link:hover { gap: 10px; color: var(--primary-dark); }
.cat-card .cat-badge {
  position: absolute; top: 16px; right: 16px; background: var(--primary);
  color: #fff; padding: 4px 14px; border-radius: 50px; font-size: 0.75rem;
  font-weight: 600;
}
/* ===== 最新资讯 ===== */
.news-section { background: var(--bg-card); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card {
  background: var(--bg-card); border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm); overflow: hidden;
  border: 1px solid var(--border-color); transition: var(--transition);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-card .news-img { width: 100%; height: 180px; object-fit: cover; }
.news-card .news-body { padding: 20px; }
.news-card .news-meta { display: flex; gap: 12px; font-size: 0.8rem; color: var(--text-light); margin-bottom: 10px; }
.news-card .news-meta .news-cat {
  background: var(--primary-light); color: var(--primary-dark);
  padding: 2px 12px; border-radius: 50px; font-weight: 500;
}
.news-card .news-body h4 { font-size: 1.05rem; margin-bottom: 8px; line-height: 1.4; }
.news-card .news-body h4 a { color: var(--text-primary); }
.news-card .news-body h4 a:hover { color: var(--primary); }
.news-card .news-body p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.5; }
.news-empty { text-align: center; padding: 48px 24px; color: var(--text-secondary); font-size: 1.1rem; grid-column: 1 / -1; }
/* ===== 数据统计 ===== */
.stats-section {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-light) 100%);
  color: var(--text-white); padding: 80px 48px;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item { padding: 20px; }
.stat-item .stat-number { font-size: 3rem; font-weight: 900; color: var(--primary); line-height: 1; margin-bottom: 8px; }
.stat-item .stat-number span { font-size: 1.5rem; }
.stat-item .stat-label { font-size: 1rem; color: rgba(255,255,255,0.8); font-weight: 500; }
/* ===== 特色流程 ===== */
.process-section { background: var(--bg-body); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.process-step {
  text-align: center; padding: 32px 20px; background: var(--bg-card);
  border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color); transition: var(--transition);
  position: relative;
}
.process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.process-step .step-number {
  width: 56px; height: 56px; margin: 0 auto 16px;
  background: var(--primary); color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; font-weight: 800;
}
.process-step h4 { font-size: 1.1rem; margin-bottom: 8px; }
.process-step p { color: var(--text-secondary); font-size: 0.9rem; }
.process-step::after {
  content: '→'; position: absolute; right: -16px; top: 50%;
  transform: translateY(-50%); font-size: 1.5rem; color: var(--primary);
  font-weight: 700;
}
.process-step:last-child::after { display: none; }
/* ===== FAQ ===== */
.faq-section { background: var(--bg-card); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border-color); border-radius: var(--radius-sm);
  margin-bottom: 12px; overflow: hidden; transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary); }
.faq-question {
  padding: 18px 24px; background: var(--bg-body); font-weight: 600;
  cursor: pointer; display: flex; justify-content: space-between;
  align-items: center; transition: var(--transition); font-size: 1rem;
}
.faq-question:hover { background: var(--primary-light); }
.faq-question .faq-icon { transition: var(--transition); font-size: 1.2rem; color: var(--primary); }
.faq-item.active .faq-question .faq-icon { transform: rotate(45deg); }
.faq-answer {
  padding: 0 24px; max-height: 0; overflow: hidden;
  transition: all 0.35s ease; color: var(--text-secondary); font-size: 0.95rem;
}
.faq-item.active .faq-answer { padding: 18px 24px; max-height: 300px; }
/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff; text-align: center; padding: 80px 48px;
}
.cta-section h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; }
.cta-section p { font-size: 1.1rem; opacity: 0.9; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }
.cta-section .btn-outline { border-color: rgba(255,255,255,0.8); }
.cta-section .btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; }
/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-dark); color: var(--text-white); padding: 48px 48px 24px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand .logo { font-size: 1.4rem; font-weight: 800; margin-bottom: 12px; display: block; }
.footer-brand .logo span { color: var(--primary); }
.footer-brand p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; max-width: 300px; }
.footer-col h4 { font-size: 1rem; margin-bottom: 16px; color: var(--text-white); font-weight: 600; }
.footer-col a { display: block; color: var(--text-light); font-size: 0.9rem; margin-bottom: 8px; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.8rem; color: var(--text-light); flex-wrap: wrap; gap: 12px;
}
.footer-bottom a { color: var(--text-light); }
.footer-bottom a:hover { color: var(--primary); }
/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-step::after { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .mobile-toggle { display: flex; }
  .mobile-overlay.active { display: block; }
  .main-content { margin-left: 0; }
  .hero { min-height: 70vh; padding: 80px 24px 40px; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .section { padding: 48px 24px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .cat-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-item .stat-number { font-size: 2.2rem; }
  .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section-title h2 { font-size: 1.6rem; }
  .cta-section h2 { font-size: 1.6rem; }
  .cta-section { padding: 48px 24px; }
  .stats-section { padding: 48px 24px; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.8rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn-lg { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-item { padding: 12px; }
  .stat-item .stat-number { font-size: 1.8rem; }
  .section { padding: 36px 16px; }
  .cat-card .cat-img { height: 160px; }
  .news-card .news-img { height: 150px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #d92b2b;
  --primary-dark: #b01e1e;
  --primary-light: #fce8e8;
  --secondary: #f5a623;
  --secondary-light: #fef3d9;
  --accent: #2b7a4a;
  --accent-light: #e6f4ec;
  --bg-body: #f8f6f2;
  --bg-white: #ffffff;
  --bg-dark: #1a1a2e;
  --bg-card: #ffffff;
  --text-dark: #1e1e1e;
  --text-main: #2d2d2d;
  --text-muted: #6e6e7a;
  --text-light: #f0f0f0;
  --border-light: #e8e4de;
  --border-card: #ebe7e1;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  --shadow-hover: 0 12px 36px rgba(0,0,0,0.15);
  --transition: all 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --sidebar-width: 220px;
  --header-h: 0px;
}

/* ===== 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-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); line-height: 1.25; color: var(--text-dark); font-weight: 700; }
h1 { font-size: 2.6rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }
p { margin-bottom: 0.75rem; color: var(--text-main); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 布局：左侧导航 + 右侧内容 ===== */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ===== 左侧导航 ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-dark);
  color: var(--text-light);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1000;
  padding: 32px 0 24px;
  transition: var(--transition);
  overflow-y: auto;
}
.sidebar .logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  padding: 0 22px 28px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.sidebar .logo span { color: var(--secondary); }
.sidebar .logo .full-name { font-size: 0.85rem; font-weight: 400; opacity: 0.7; display: block; margin-top: 2px; letter-spacing: 0.3px; }
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 12px;
}
.sidebar-nav .nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
  position: relative;
}
.sidebar-nav .nav-item:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
}
.sidebar-nav .nav-item.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(217,43,43,0.35);
}
.sidebar-nav .nav-item .nav-icon { font-size: 1.2rem; width: 24px; text-align: center; }
.sidebar-nav .nav-item .badge-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--secondary);
  margin-left: auto;
}

/* ===== 右侧主内容 ===== */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== 移动端菜单切换 ===== */
.mobile-toggle {
  display: none;
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 1100;
  background: var(--primary);
  color: #fff;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  font-size: 1.4rem;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(217,43,43,0.3);
  transition: var(--transition);
  align-items: center;
  justify-content: center;
}
.mobile-toggle:hover { background: var(--primary-dark); transform: scale(1.05); }
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
  backdrop-filter: blur(4px);
}

/* ===== 分类页 Banner ===== */
.cat-banner {
  position: relative;
  padding: 80px 0 64px;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  overflow: hidden;
}
.cat-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.15;
  mix-blend-mode: overlay;
}
.cat-banner::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 80px;
  background: linear-gradient(to top, var(--bg-body), transparent);
}
.cat-banner .container { position: relative; z-index: 2; }
.cat-breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
  align-items: center;
}
.cat-breadcrumb a { color: rgba(255,255,255,0.7); }
.cat-breadcrumb a:hover { color: var(--secondary); }
.cat-breadcrumb .sep { opacity: 0.5; }
.cat-title-wrap h1 {
  color: #fff;
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.cat-title-wrap h1 .icon-em { font-size: 2.4rem; }
.cat-title-wrap .sub-text {
  color: rgba(255,255,255,0.75);
  font-size: 1.1rem;
  max-width: 640px;
  line-height: 1.6;
}
.cat-stats-row {
  display: flex;
  gap: 32px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.cat-stat-item {
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  background: rgba(255,255,255,0.08);
  padding: 8px 18px 8px 14px;
  border-radius: 40px;
  backdrop-filter: blur(4px);
}
.cat-stat-item i { color: var(--secondary); font-size: 1.1rem; }
.cat-stat-item strong { font-size: 1.2rem; margin-right: 2px; }

/* ===== 板块通用 ===== */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-white); }
.section-dark { background: var(--bg-dark); color: var(--text-light); }
.section-dark h2, .section-dark h3, .section-dark .section-subtitle { color: #fff; }
.section-title-wrap { text-align: center; margin-bottom: 48px; }
.section-title-wrap h2 { font-size: 2.2rem; margin-bottom: 10px; }
.section-title-wrap .section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}
.section-title-wrap .section-badge {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 40px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid-4 { grid-template-columns: repeat(4, 1fr); }

.gear-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-card);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.gear-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-6px);
  border-color: transparent;
}
.gear-card .card-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  background: #f0eeea;
}
.gear-card .card-body {
  padding: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.gear-card .card-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 40px;
  margin-bottom: 10px;
  width: fit-content;
}
.gear-card h3 { font-size: 1.15rem; margin-bottom: 6px; color: var(--text-dark); }
.gear-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 12px; flex: 1; }
.gear-card .card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--border-light);
  margin-top: auto;
}
.gear-card .card-price { font-weight: 700; color: var(--primary); font-size: 1.1rem; }
.gear-card .card-rating { color: var(--secondary); font-size: 0.85rem; }

/* ===== 特色数据 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-block {
  text-align: center;
  background: rgba(255,255,255,0.04);
  padding: 32px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}
.stat-block:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }
.stat-block .stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-block .stat-label { font-size: 0.95rem; color: rgba(255,255,255,0.7); }

/* ===== 选购流程 ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
.step-item {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 32px 22px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-card);
  transition: var(--transition);
  position: relative;
}
.step-item:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.step-item .step-num {
  width: 48px; height: 48px;
  background: var(--primary);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 16px rgba(217,43,43,0.25);
}
.step-item h4 { font-size: 1.05rem; margin-bottom: 6px; }
.step-item p { font-size: 0.88rem; color: var(--text-muted); margin: 0; }

/* ===== FAQ ===== */
.faq-grid {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-white);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-card);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq-q {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  background: none;
  width: 100%;
  text-align: left;
  color: var(--text-dark);
  transition: var(--transition);
}
.faq-q:hover { color: var(--primary); }
.faq-q i { color: var(--primary); font-size: 1.1rem; transition: var(--transition); }
.faq-q .arrow { margin-left: auto; color: var(--text-muted); transition: var(--transition); }
.faq-item.open .faq-q .arrow { transform: rotate(180deg); color: var(--primary); }
.faq-a {
  padding: 0 24px 18px;
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.7;
  display: none;
}
.faq-item.open .faq-a { display: block; }

/* ===== CTA ===== */
.cta-block {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-block::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-block .container { position: relative; z-index: 2; }
.cta-block h2 { color: #fff; font-size: 2rem; margin-bottom: 12px; }
.cta-block p { color: rgba(255,255,255,0.85); font-size: 1.05rem; max-width: 600px; margin: 0 auto 24px; }
.cta-btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.05rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.cta-btn-primary { background: #fff; color: var(--primary); }
.cta-btn-primary:hover { background: var(--secondary); color: #1a1a2e; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.cta-btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.4); }
.cta-btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; transform: translateY(-2px); }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
  margin-top: auto;
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.site-footer .logo { font-size: 1.4rem; font-weight: 800; color: #fff; display: inline-flex; align-items: center; gap: 4px; }
.site-footer .logo span { color: var(--secondary); }
.site-footer .footer-brand p { font-size: 0.9rem; margin-top: 12px; color: rgba(255,255,255,0.5); max-width: 320px; }
.site-footer .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
.site-footer .footer-col a {
  display: block;
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
  padding: 5px 0;
  transition: var(--transition);
}
.site-footer .footer-col a:hover { color: var(--secondary); padding-left: 4px; }
.site-footer .footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
  gap: 8px;
}
.site-footer .footer-bottom a { color: rgba(255,255,255,0.4); }
.site-footer .footer-bottom a:hover { color: var(--secondary); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .mobile-toggle { display: flex; }
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-overlay.open { display: block; }
  .main-content { margin-left: 0; }
  .cat-banner { padding: 100px 0 48px; }
  .cat-title-wrap h1 { font-size: 2rem; flex-wrap: wrap; }
  .cat-stats-row { gap: 12px; }
  .cat-stat-item { font-size: 0.8rem; padding: 6px 14px 6px 10px; }
  .section { padding: 48px 0; }
  .section-title-wrap h2 { font-size: 1.6rem; }
  .card-grid { grid-template-columns: 1fr; gap: 20px; }
  .card-grid-2 { grid-template-columns: 1fr; }
  .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-block { padding: 20px 12px; }
  .stat-block .stat-number { font-size: 1.8rem; }
  .steps { grid-template-columns: 1fr; gap: 16px; }
  .cta-block { padding: 36px 20px; }
  .cta-block h2 { font-size: 1.4rem; }
  .cta-btn-group { flex-direction: column; align-items: center; }
  .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .site-footer .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .cat-title-wrap h1 { font-size: 1.6rem; }
  .cat-banner { padding: 80px 0 32px; }
  .card-grid-4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .container { padding: 0 16px; }
}

/* ===== 实用辅助 ===== */
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.gap-2 { gap: 8px; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #c0392b;
            --primary-light: #e74c3c;
            --primary-dark: #96281b;
            --secondary: #f39c12;
            --secondary-light: #f1c40f;
            --accent: #2c3e50;
            --bg-body: #f5f6fa;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-sidebar: #1a1a2e;
            --bg-sidebar-hover: #16213e;
            --text-primary: #2c3e50;
            --text-secondary: #7f8c8d;
            --text-light: #bdc3c7;
            --text-white: #ecf0f1;
            --border-color: #e8e8e8;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
            --sidebar-width: 240px;
            --header-height: 64px;
            --max-width: 1280px;
            --content-max: 860px;
        }

        /* ===== 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-primary);
            background: var(--bg-body);
            display: flex;
            min-height: 100vh;
        }
        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; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 左侧导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            box-shadow: 2px 0 20px rgba(0,0,0,0.2);
            transition: var(--transition);
        }
        .sidebar-brand {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .sidebar-brand .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 6px;
            letter-spacing: 0.5px;
        }
        .sidebar-brand .logo span { color: var(--secondary); }
        .sidebar-brand .logo-sub {
            font-size: 0.75rem;
            color: rgba(255,255,255,0.5);
            margin-top: 2px;
            letter-spacing: 1px;
        }
        .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: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: rgba(255,255,255,0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            text-decoration: none;
        }
        .sidebar-nav .nav-item:hover {
            background: rgba(255,255,255,0.08);
            color: #fff;
        }
        .sidebar-nav .nav-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(192,57,43,0.35);
        }
        .sidebar-nav .nav-item .nav-icon { font-size: 1.2rem; line-height: 1; }
        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 0.7rem;
            color: rgba(255,255,255,0.3);
            text-align: center;
        }

        /* ===== 主内容区 ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--bg-sidebar) 0%, #16213e 60%, #0f3460 100%);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            margin-bottom: 20px;
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-banner .breadcrumb a:hover { color: var(--secondary); }
        .article-banner .breadcrumb .sep { opacity: 0.4; }
        .article-banner h1 {
            font-size: 2.4rem;
            color: #fff;
            max-width: 800px;
            margin: 0 auto 16px;
            line-height: 1.35;
        }
        .article-banner .meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.65);
            flex-wrap: wrap;
        }
        .article-banner .meta span { display: flex; align-items: center; gap: 6px; }
        .article-banner .meta .tag {
            background: var(--primary);
            color: #fff;
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* ===== 文章正文 ===== */
        .article-content-section {
            flex: 1;
            padding: 48px 0 64px;
        }
        .article-content-section .container {
            max-width: var(--content-max);
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-body .content p { margin-bottom: 1.2em; }
        .article-body .content h2, .article-body .content h3 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            color: var(--bg-sidebar);
        }
        .article-body .content h2 { font-size: 1.6rem; }
        .article-body .content h3 { font-size: 1.25rem; }
        .article-body .content ul, .article-body .content ol {
            padding-left: 1.8em;
            margin-bottom: 1.2em;
        }
        .article-body .content ul { list-style: disc; }
        .article-body .content ol { list-style: decimal; }
        .article-body .content li { margin-bottom: 0.4em; }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 1.5em 0;
            background: rgba(192,57,43,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.5em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content a { color: var(--primary); text-decoration: underline; }
        .article-body .content a:hover { color: var(--primary-dark); }

        /* ===== 文章空状态 ===== */
        .article-empty {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }
        .article-empty .empty-icon { font-size: 4rem; margin-bottom: 20px; opacity: 0.3; }
        .article-empty h2 { font-size: 1.6rem; color: var(--text-primary); margin-bottom: 8px; }
        .article-empty p { color: var(--text-secondary); margin-bottom: 24px; }
        .article-empty .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            transition: var(--transition);
        }
        .article-empty .btn-back:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== 文章底部导航 ===== */
        .article-nav {
            display: flex;
            justify-content: space-between;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            gap: 16px;
            flex-wrap: wrap;
        }
        .article-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--bg-body);
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .article-nav a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-sidebar);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 32px;
            margin-top: auto;
        }
        .site-footer .container { max-width: var(--max-width); }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-bottom: 12px;
        }
        .footer-brand .logo span { color: var(--secondary); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.5); max-width: 320px; }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.88rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.45); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== 移动端菜单切换 ===== */
        .menu-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 44px;
            height: 44px;
            background: var(--bg-sidebar);
            border: none;
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }
        .menu-toggle:hover { background: var(--primary); }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-banner h1 { font-size: 2rem; }
            .article-body { padding: 36px 32px; }
        }

        @media (max-width: 768px) {
            .menu-toggle { display: flex; align-items: center; justify-content: center; }
            .sidebar {
                left: -280px;
                width: 260px;
            }
            .sidebar.open { left: 0; }
            .sidebar-overlay.open { display: block; }
            .main-wrapper { margin-left: 0; }
            .article-banner { padding: 60px 0 40px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-banner .meta { gap: 12px; font-size: 0.8rem; }
            .article-body { padding: 28px 20px; border-radius: var(--radius-md); }
            .article-body .content { font-size: 1rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.3rem; }
            .article-banner .meta { flex-direction: column; gap: 6px; }
            .article-body { padding: 20px 16px; }
            .article-body .content { font-size: 0.95rem; }
            .article-nav { flex-direction: column; }
            .article-nav a { justify-content: center; }
            .footer-grid { gap: 20px; }
            .footer-brand p { max-width: 100%; }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root {
  --primary: #0A1628;
  --primary-light: #1A2A4A;
  --accent: #E63946;
  --accent-hover: #C1121F;
  --gold: #FFD166;
  --gold-light: #FFE4A0;
  --bg: #FFFFFF;
  --bg-alt: #F5F7FA;
  --bg-dark: #0F1A2E;
  --text: #1A1A2E;
  --text-light: #6B7280;
  --text-white: #F9FAFB;
  --border: #E5E7EB;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow: 0 8px 32px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 20px 60px rgba(10, 22, 40, 0.12);
  --shadow-hover: 0 16px 48px rgba(230, 57, 70, 0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --sidebar-width: 240px;
  --header-h: 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);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text); }
h1 { font-size: 2.75rem; }
h2 { font-size: 2.125rem; margin-bottom: 1rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; }
p { margin-bottom: 0.75rem; color: var(--text-light); }
/* ===== Container ===== */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
/* ===== Layout ===== */
.layout-wrapper { display: flex; min-height: 100vh; }
/* ===== Sidebar ===== */
.sidebar {
  position: fixed; top: 0; left: 0; width: var(--sidebar-width); height: 100vh;
  background: var(--primary); color: var(--text-white);
  display: flex; flex-direction: column; z-index: 1000;
  transition: transform var(--transition), box-shadow var(--transition);
  overflow-y: auto;
}
.sidebar-brand {
  padding: 28px 20px 16px; border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; gap: 10px;
}
.sidebar-brand .logo {
  font-size: 1.45rem; font-weight: 800; letter-spacing: -0.5px;
  color: var(--text-white); display: flex; align-items: center; gap: 4px;
}
.sidebar-brand .logo span { color: var(--gold); }
.sidebar-brand .logo-sub { font-size: 0.7rem; opacity: 0.6; margin-top: 2px; }
.sidebar-nav { padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.sidebar-nav .nav-item {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  border-radius: var(--radius-sm); color: rgba(255,255,255,0.7);
  font-weight: 500; font-size: 0.95rem; transition: var(--transition);
}
.sidebar-nav .nav-item:hover { background: rgba(255,255,255,0.08); color: var(--text-white); }
.sidebar-nav .nav-item.active { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(230,57,70,0.35); }
.sidebar-nav .nav-item .nav-icon { font-size: 1.2rem; width: 28px; text-align: center; }
.sidebar-nav .nav-divider { height: 1px; background: rgba(255,255,255,0.06); margin: 8px 16px; }
.sidebar-footer-nav { padding: 12px 12px 24px; border-top: 1px solid rgba(255,255,255,0.06); }
.sidebar-footer-nav .nav-item { font-size: 0.85rem; padding: 10px 16px; }
/* ===== Main Content ===== */
.content-area {
  margin-left: var(--sidebar-width); flex: 1; min-width: 0;
  display: flex; flex-direction: column;
}
/* ===== Hero / Banner ===== */
.page-hero {
  position: relative; padding: 80px 0 100px; overflow: hidden;
  background: var(--bg-dark); min-height: 340px;
  display: flex; align-items: center;
}
.page-hero .hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.35; transform: scale(1.05);
}
.page-hero .hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(135deg, rgba(10,22,40,0.88) 0%, rgba(10,22,40,0.55) 100%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .hero-badge {
  display: inline-block; background: var(--accent); color: #fff; font-size: 0.8rem;
  font-weight: 600; padding: 6px 16px; border-radius: 50px; margin-bottom: 16px;
  letter-spacing: 0.3px;
}
.page-hero h1 { color: var(--text-white); font-size: 2.75rem; max-width: 700px; margin-bottom: 16px; }
.page-hero h1 span { color: var(--gold); }
.page-hero p { color: rgba(255,255,255,0.7); font-size: 1.125rem; max-width: 560px; margin-bottom: 28px; }
.page-hero .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
/* ===== Section ===== */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-dark h2, .section-dark h3 { color: var(--text-white); }
.section-dark p { color: rgba(255,255,255,0.7); }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 48px; }
.section-header h2 { margin-bottom: 12px; }
.section-header p { font-size: 1.1rem; }
.section-header .badge { display: inline-block; background: var(--accent); color: #fff; font-size: 0.75rem; font-weight: 600; padding: 4px 14px; border-radius: 50px; margin-bottom: 12px; letter-spacing: 0.3px; }
/* ===== Card ===== */
.card {
  background: var(--bg); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: var(--transition); border: 1px solid var(--border);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.card-img { width: 100%; height: 200px; object-fit: cover; }
.card-body { padding: 24px; }
.card-body h3 { font-size: 1.2rem; margin-bottom: 8px; }
.card-body p { font-size: 0.95rem; color: var(--text-light); margin-bottom: 16px; }
.card-body .card-tag { display: inline-block; font-size: 0.75rem; font-weight: 600; color: var(--accent); background: rgba(230,57,70,0.08); padding: 2px 12px; border-radius: 50px; margin-bottom: 10px; }
.card-body .card-meta { font-size: 0.85rem; color: var(--text-light); display: flex; gap: 16px; }
/* ===== Grid ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
/* ===== Button ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px;
  border-radius: 50px; font-weight: 600; font-size: 0.95rem;
  cursor: pointer; transition: var(--transition); border: 2px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230,57,70,0.3); }
.btn-outline { background: transparent; color: var(--text-white); border-color: rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.btn-outline-dark { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline-dark:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-gold { background: var(--gold); color: var(--primary); border-color: var(--gold); }
.btn-gold:hover { background: var(--gold-light); border-color: var(--gold-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,209,102,0.3); }
/* ===== Tag ===== */
.tag { display: inline-block; font-size: 0.75rem; font-weight: 600; padding: 4px 14px; border-radius: 50px; background: rgba(255,255,255,0.1); color: var(--text-white); }
.tag-accent { background: rgba(230,57,70,0.12); color: var(--accent); }
.tag-gold { background: rgba(255,209,102,0.15); color: var(--gold); }
/* ===== Stats ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card { text-align: center; padding: 32px 16px; background: rgba(255,255,255,0.04); border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.06); }
.stat-card .stat-number { font-size: 2.5rem; font-weight: 800; color: var(--gold); line-height: 1.1; margin-bottom: 6px; }
.stat-card .stat-label { font-size: 0.9rem; color: rgba(255,255,255,0.6); }
/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--bg); border-radius: var(--radius-sm); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: var(--accent); box-shadow: 0 4px 20px rgba(230,57,70,0.06); }
.faq-question { padding: 20px 24px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1.05rem; user-select: none; }
.faq-question .faq-icon { font-size: 1.2rem; transition: var(--transition); color: var(--accent); }
.faq-item.open .faq-question .faq-icon { transform: rotate(180deg); }
.faq-answer { padding: 0 24px 20px; color: var(--text-light); font-size: 0.95rem; line-height: 1.7; display: none; }
.faq-item.open .faq-answer { display: block; }
/* ===== CTA ===== */
.cta-section { padding: 80px 0; text-align: center; background: var(--primary); position: relative; overflow: hidden; }
.cta-section .cta-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.1; }
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { color: var(--text-white); font-size: 2.25rem; margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 520px; margin: 0 auto 28px; }
.cta-section .cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
/* ===== Event Category Pills ===== */
.category-pills { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 40px; }
.pill { padding: 10px 24px; border-radius: 50px; font-size: 0.9rem; font-weight: 500; background: var(--bg); border: 1px solid var(--border); cursor: pointer; transition: var(--transition); color: var(--text-light); }
.pill:hover { border-color: var(--accent); color: var(--accent); }
.pill.active { background: var(--accent); color: #fff; border-color: var(--accent); box-shadow: 0 4px 16px rgba(230,57,70,0.25); }
/* ===== Event List ===== */
.event-list { display: flex; flex-direction: column; gap: 16px; }
.event-item { display: flex; align-items: center; gap: 20px; background: var(--bg); padding: 20px 24px; border-radius: var(--radius-sm); border: 1px solid var(--border); transition: var(--transition); }
.event-item:hover { border-color: var(--accent); box-shadow: var(--shadow); transform: translateX(4px); }
.event-item .event-date { text-align: center; min-width: 60px; }
.event-item .event-date .day { font-size: 1.6rem; font-weight: 800; color: var(--accent); line-height: 1.1; }
.event-item .event-date .month { font-size: 0.8rem; color: var(--text-light); text-transform: uppercase; }
.event-item .event-info { flex: 1; }
.event-item .event-info h4 { font-size: 1.05rem; margin-bottom: 4px; }
.event-item .event-info p { font-size: 0.85rem; color: var(--text-light); margin: 0; }
.event-item .event-status { font-size: 0.8rem; font-weight: 600; padding: 4px 14px; border-radius: 50px; }
.event-status.live { background: rgba(230,57,70,0.1); color: var(--accent); }
.event-status.upcoming { background: rgba(255,209,102,0.15); color: #B8860B; }
.event-status.ended { background: rgba(107,114,128,0.1); color: var(--text-light); }
/* ===== Footer ===== */
.site-footer { background: var(--primary); color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.site-footer .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.site-footer .footer-brand .logo { font-size: 1.4rem; font-weight: 800; color: var(--text-white); margin-bottom: 12px; display: inline-block; }
.site-footer .footer-brand .logo span { color: var(--gold); }
.site-footer .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); max-width: 280px; }
.site-footer .footer-col h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
.site-footer .footer-col a { display: block; color: rgba(255,255,255,0.55); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); }
.site-footer .footer-col a:hover { color: var(--gold); padding-left: 4px; }
.site-footer .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: 0.85rem; color: rgba(255,255,255,0.4); }
.site-footer .footer-bottom a { color: rgba(255,255,255,0.5); }
.site-footer .footer-bottom a:hover { color: var(--gold); }
/* ===== Mobile Toggle ===== */
.mobile-toggle { display: none; position: fixed; top: 16px; left: 16px; z-index: 1100; background: var(--primary); color: #fff; width: 44px; height: 44px; border-radius: var(--radius-xs); align-items: center; justify-content: center; font-size: 1.4rem; cursor: pointer; border: 1px solid rgba(255,255,255,0.1); box-shadow: var(--shadow); }
.mobile-toggle:hover { background: var(--primary-light); }
/* ===== Scrollbar ===== */
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 10px; }
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root { --sidebar-width: 200px; }
  h1 { font-size: 2.25rem; }
  .page-hero h1 { font-size: 2.25rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .mobile-toggle { display: flex; }
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: 0 0 60px rgba(0,0,0,0.5); }
  .content-area { margin-left: 0; }
  .page-hero { padding: 60px 0 72px; min-height: 280px; }
  .page-hero h1 { font-size: 1.8rem; }
  h2 { font-size: 1.6rem; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .section { padding: 48px 0; }
  .section-header { margin-bottom: 32px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-card { padding: 20px 12px; }
  .stat-card .stat-number { font-size: 1.8rem; }
  .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .site-footer .footer-bottom { flex-direction: column; text-align: center; }
  .event-item { flex-direction: column; text-align: center; gap: 12px; }
  .event-item .event-date { min-width: auto; }
  .category-pills { gap: 8px; }
  .pill { font-size: 0.8rem; padding: 8px 16px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .page-hero h1 { font-size: 1.5rem; }
  .grid-4 { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}
/* ===== Additional Utilities ===== */
.text-center { text-align: center; }
.mt-1 { margin-top: 12px; }
.mt-2 { margin-top: 24px; }
.mb-1 { margin-bottom: 12px; }
.mb-2 { margin-bottom: 24px; }
.gap-1 { gap: 12px; }
.flex-center { display: flex; align-items: center; justify-content: center; }