/* roulang page: index */
/* ============================================================
   设计变量
============================================================ */
:root {
  --primary: #4F46E5;
  --primary-light: #EEF2FF;
  --primary-dark: #3730A3;
  --secondary: #F59E0B;
  --secondary-light: #FEF3C7;
  --accent: #10B981;
  --accent-light: #D1FAE5;
  --bg-body: #F8FAFC;
  --bg-white: #FFFFFF;
  --bg-soft: #F1F5F9;
  --text-main: #0F172A;
  --text-muted: #64748B;
  --border-color: #E2E8F0;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, .12);
  --sidebar-width: 260px;
  --section-space: 5rem;
  --transition: all .3s ease;
}

/* ============================================================
   基础 Reset
============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-body);
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; }
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-top: 0;
  margin-bottom: .75rem;
  letter-spacing: -.01em;
}
p { margin-top: 0; margin-bottom: 1rem; }
ul, ol { padding-left: 1.25rem; }
:focus-visible { outline: 3px solid rgba(79, 70, 229, .35); outline-offset: 2px; border-radius: 4px; }

/* ============================================================
   容器与布局
============================================================ */
.container-site {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: var(--section-space) 0; position: relative; }
.section + .section { padding-top: 0; }
.bg-soft { background: var(--bg-soft); }
.section-head {
  max-width: 640px;
  margin: 0 auto 3rem;
  text-align: center;
}
.section-eyebrow {
  display: inline-block;
  font-size: .82rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: 40px;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: .75rem;
}
.section-title { font-size: clamp(1.7rem, 3vw, 2.5rem); margin-bottom: .65rem; color: var(--text-main); }
.section-sub { color: var(--text-muted); font-size: 1.02rem; margin-bottom: 0; }

/* ============================================================
   侧边栏导航（App Shell）
============================================================ */
.app-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-white);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 28px 20px 24px;
  z-index: 1040;
  transition: transform .4s ease, box-shadow .4s ease;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 24px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}
.sidebar-brand .brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(79, 70, 229, .35);
}
.sidebar-brand .brand-text {
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
  letter-spacing: -.01em;
}
.sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: 4px; overflow-y: auto; }
.sidebar-nav .nav-label {
  font-size: .72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: 12px 12px 6px;
}
.sidebar-nav a.nav-link-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-weight: 500;
  font-size: .95rem;
  transition: var(--transition);
  position: relative;
}
.sidebar-nav a.nav-link-item i {
  width: 20px;
  text-align: center;
  font-size: 1.05rem;
}
.sidebar-nav a.nav-link-item:hover {
  background: var(--primary-light);
  color: var(--primary);
  transform: translateX(2px);
}
.sidebar-nav a.nav-link-item.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(79, 70, 229, .3);
}
.sidebar-footer {
  margin-top: 20px;
  padding: 18px 14px;
  background: var(--bg-soft);
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--border-color);
}
.sidebar-footer .phone-num {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.02rem;
  letter-spacing: .02em;
}
.sidebar-footer p { margin-bottom: 2px; font-size: .82rem; color: var(--text-muted); }
.sidebar-footer .online-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  color: var(--accent);
  font-weight: 600;
  margin-top: 6px;
}
.sidebar-footer .online-badge::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 0 3px var(--accent-light);
}

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

/* ============================================================
   顶栏
============================================================ */
.app-header {
  position: sticky;
  top: 0;
  z-index: 1020;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  padding: 13px 0;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .88rem;
  color: var(--text-muted);
}
.breadcrumb-nav a { color: var(--text-muted); }
.breadcrumb-nav a:hover { color: var(--primary); }
.breadcrumb-nav .current { color: var(--text-main); font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.mobile-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-color);
  background: var(--bg-white);
  border-radius: 12px;
  color: var(--text-main);
  font-size: 1.1rem;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}
.mobile-menu-btn:hover { background: var(--primary-light); color: var(--primary); border-color: transparent; }

/* ============================================================
   按钮
============================================================ */
.btn { border-radius: 12px; font-weight: 600; padding: .7rem 1.5rem; transition: var(--transition); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  color: #fff;
  box-shadow: 0 8px 20px rgba(79, 70, 229, .28);
}
.btn-primary:hover, .btn-primary:focus {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-dark));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(79, 70, 229, .36);
}
.btn-ghost {
  background: rgba(255, 255, 255, .12);
  border: 1.5px solid rgba(255, 255, 255, .65);
  color: #fff;
  backdrop-filter: blur(4px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, .2);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border-color);
  color: var(--text-main);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--primary); border: none; box-shadow: 0 8px 20px rgba(0, 0, 0, .15); }
.btn-light:hover { background: var(--primary-light); color: var(--primary); transform: translateY(-2px); }
.btn-outline-light { background: transparent; border: 2px solid rgba(255, 255, 255, .8); color: #fff; }
.btn-outline-light:hover { background: #fff; color: var(--primary); border-color: #fff; transform: translateY(-2px); }
.btn-lg { padding: .9rem 2rem; font-size: 1.02rem; }
.btn-sm { padding: .42rem 1rem; font-size: .88rem; border-radius: 10px; }

/* ============================================================
   Hero 首屏
============================================================ */
.hero {
  position: relative;
  min-height: 520px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(15, 23, 42, .82) 0%, rgba(15, 23, 42, .6) 45%, rgba(79, 70, 229, .35) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: 56px 24px;
  color: #fff;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .15);
  border: 1px solid rgba(255, 255, 255, .3);
  border-radius: 40px;
  padding: 6px 16px;
  font-size: .85rem;
  font-weight: 600;
  backdrop-filter: blur(6px);
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.3rem);
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.15;
  letter-spacing: -.02em;
}
.hero-desc {
  font-size: 1.08rem;
  color: rgba(255, 255, 255, .9);
  margin-bottom: 2rem;
  max-width: 560px;
  line-height: 1.75;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 2.6rem; }
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .25);
}
.hero-stat-item { display: flex; flex-direction: column; }
.hero-stat-item strong { font-size: 1.55rem; font-weight: 800; }
.hero-stat-item span { font-size: .85rem; color: rgba(255, 255, 255, .8); }

/* ============================================================
   特性卡片
============================================================ */
.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  height: 100%;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-card:hover::after { opacity: 1; }
.feature-icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}
.bg-primary-soft { background: var(--primary-light); color: var(--primary); }
.bg-success-soft { background: var(--accent-light); color: var(--accent); }
.bg-warning-soft { background: var(--secondary-light); color: var(--secondary); }
.feature-card h3 { font-size: 1.15rem; margin-bottom: .5rem; }
.feature-card p { color: var(--text-muted); font-size: .94rem; margin-bottom: 0; }

/* ============================================================
   标签
============================================================ */
.tag {
  display: inline-block;
  font-size: .78rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 12px;
  border-radius: 30px;
  letter-spacing: .02em;
}
.tag-accent { color: var(--accent); background: var(--accent-light); }
.tag-secondary { color: #B45309; background: var(--secondary-light); }

/* ============================================================
   分类卡片
============================================================ */
.category-card {
  display: block;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  height: 100%;
  transition: var(--transition);
}
.category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.category-card-img {
  position: relative;
  height: 190px;
  overflow: hidden;
}
.category-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.category-card:hover .category-card-img img { transform: scale(1.06); }
.category-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(15, 23, 42, .55) 100%);
}
.category-card-body { padding: 22px 22px 24px; }
.category-card-body h3 { font-size: 1.18rem; margin: 10px 0 8px; }
.category-card-body p { font-size: .92rem; color: var(--text-muted); margin-bottom: 14px; }
.category-card-link {
  font-size: .9rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}
.category-card:hover .category-card-link { gap: 14px; }

/* ============================================================
   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-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  transition: var(--transition);
}
.news-item:hover { transform: translateX(6px); box-shadow: var(--shadow-md); border-color: var(--primary); }
.news-item-icon {
  width: 46px; height: 46px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}
.news-item-main { flex: 1; min-width: 0; }
.news-item-main h3 { font-size: 1.05rem; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: var(--transition); }
.news-item:hover .news-item-main h3 { color: var(--primary); }
.news-item-main p { font-size: .88rem; color: var(--text-muted); margin-bottom: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-item-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; flex-shrink: 0; }
.news-item-date { font-size: .82rem; color: var(--text-muted); }
.section-more { text-align: center; margin-top: 40px; }
.empty-state {
  background: var(--bg-white);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  color: var(--text-muted);
  font-size: 1rem;
}

/* ============================================================
   数据统计
============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  width: 70px; height: 70px;
  border-radius: 50%;
  background: var(--primary-light);
  top: -25px; right: -25px;
  opacity: .6;
}
.stat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.stat-icon {
  width: 54px; height: 54px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin: 0 auto 16px;
  box-shadow: 0 8px 20px rgba(79, 70, 229, .25);
}
.stat-num { font-size: 1.75rem; font-weight: 800; color: var(--text-main); margin-bottom: 4px; }
.stat-label { font-size: .88rem; color: var(--text-muted); }

/* ============================================================
   流程步骤
============================================================ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.process-step {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
}
.process-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.process-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary-light);
  line-height: 1;
  margin-bottom: 14px;
  font-family: inherit;
}
.process-icon {
  width: 56px; height: 56px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.35rem;
  margin: 0 auto 16px;
}
.process-step h3 { font-size: 1.08rem; margin-bottom: 8px; }
.process-step p { font-size: .9rem; color: var(--text-muted); margin-bottom: 0; }

/* ============================================================
   图文展示
============================================================ */
.showcase-item {
  display: flex;
  align-items: center;
  gap: 56px;
}
.showcase-item + .showcase-item { margin-top: 72px; }
.showcase-media {
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.showcase-media img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }
.showcase-content { flex: 1; }
.showcase-content h2 { font-size: 1.9rem; margin-bottom: 16px; }
.showcase-content p { color: var(--text-muted); margin-bottom: 20px; }
.check-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.check-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: .96rem;
  color: var(--text-main);
}
.check-list li i { color: var(--accent); font-size: 1.05rem; }

/* ============================================================
   FAQ
============================================================ */
.faq-accordion .accordion-item {
  background: var(--bg-white);
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.faq-accordion .accordion-button {
  background: var(--bg-white);
  color: var(--text-main);
  font-weight: 600;
  font-size: 1rem;
  padding: 18px 22px;
  border: none;
  box-shadow: none !important;
  transition: var(--transition);
}
.faq-accordion .accordion-button:not(.collapsed) {
  color: var(--primary);
  background: var(--primary-light);
}
.faq-accordion .accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%234F46E5' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}
.faq-accordion .accordion-body { padding: 18px 22px; color: var(--text-muted); font-size: .95rem; line-height: 1.7; }

/* ============================================================
   CTA 区块
============================================================ */
.section-cta {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 90px 0;
  text-align: center;
  color: #fff;
}
.section-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(79, 70, 229, .9), rgba(55, 48, 163, .85));
}
.cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
.cta-content h2 { font-size: 2rem; font-weight: 800; margin-bottom: .875rem; }
.cta-content p { color: rgba(255, 255, 255, .9); font-size: 1.05rem; margin-bottom: 28px; }

/* ============================================================
   页脚
============================================================ */
.app-footer {
  background: #0F172A;
  color: rgba(255, 255, 255, .75);
  margin-top: auto;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding: 56px 24px 42px;
}
.footer-brand { flex: 1.4; }
.footer-brand .footer-logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  display: inline-block;
}
.footer-brand p { font-size: .92rem; color: rgba(255, 255, 255, .65); max-width: 320px; }
.footer-links, .footer-contact { flex: 1; }
.footer-links h4, .footer-contact h4 {
  font-size: 1rem;
  color: #fff;
  margin-bottom: 16px;
  font-weight: 700;
}
.footer-links ul { list-style: none; padding: 0; margin: 0; }
.footer-links li { padding: 5px 0; }
.footer-links a { color: rgba(255, 255, 255, .65); font-size: .9rem; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact p { font-size: .9rem; margin-bottom: 8px; color: rgba(255, 255, 255, .65); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 24px;
  text-align: center;
}
.footer-bottom p { font-size: .84rem; color: rgba(255, 255, 255, .5); margin-bottom: 0; }
.footer-bottom a { color: rgba(255, 255, 255, .7); }
.footer-bottom a:hover { color: #fff; }

/* ============================================================
   移动端导航遮罩
============================================================ */
.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .5);
  z-index: 1030;
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s ease, visibility .35s ease;
  backdrop-filter: blur(2px);
}
.sidebar-backdrop.show { opacity: 1; visibility: visible; }

/* ============================================================
   响应式断点
============================================================ */
@media (max-width: 1199px) {
  :root { --section-space: 4.2rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
}
@media (max-width: 991px) {
  :root { --sidebar-width: 0px; }
  .app-sidebar {
    transform: translateX(-110%);
    box-shadow: var(--shadow-lg);
  }
  .app-sidebar.sidebar-open { transform: translateX(0); }
  .app-main { margin-left: 0; }
  .mobile-menu-btn { display: flex; }
  .hero { min-height: 480px; }
  .showcase-item { flex-direction: column; gap: 36px; }
  .showcase-item.reverse { flex-direction: column; }
  .showcase-media { width: 100%; }
  .showcase-media img { min-height: 240px; }
  .category-card-img { height: 170px; }
  .footer-top { flex-wrap: wrap; gap: 36px; }
  .footer-brand { flex-basis: 100%; }
}
@media (max-width: 767px) {
  :root { --section-space: 3.5rem; }
  .container-site { padding: 0 18px; }
  .hero-content { padding: 44px 20px; }
  .hero-stats { gap: 18px; }
  .hero-stat-item strong { font-size: 1.3rem; }
  .news-item { flex-wrap: wrap; gap: 12px; padding: 18px; }
  .news-item-meta { flex-direction: row; align-items: center; width: 100%; justify-content: space-between; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .process-grid { grid-template-columns: 1fr; }
  .header-actions .btn-primary { display: none; }
  .section-head { margin-bottom: 2rem; }
}
@media (max-width: 520px) {
  .hero { min-height: 440px; }
  .hero-desc { font-size: .98rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 20px 14px; }
  .stat-num { font-size: 1.4rem; }
  .category-card-img { height: 150px; }
  .footer-top { padding: 40px 18px 30px; flex-direction: column; gap: 30px; }
  .footer-bottom { padding: 16px 18px; }
  .breadcrumb-nav { display: none; }
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
    :root {
      --primary: #2563eb;
      --primary-dark: #1e40af;
      --primary-light: #eff6ff;
      --accent: #f59e0b;
      --accent-light: #fffbeb;
      --ink: #0f172a;
      --muted: #64748b;
      --bg: #f6f8fb;
      --card: #ffffff;
      --border: #e2e8f0;
      --radius: 16px;
      --radius-sm: 10px;
      --shadow-sm: 0 4px 14px rgba(15, 23, 42, .06);
      --shadow-md: 0 10px 30px rgba(15, 23, 42, .10);
      --shadow-lg: 0 24px 52px rgba(15, 23, 42, .14);
      --sidebar-w: 264px;
      --font-base: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
      --bs-body-font-family: var(--font-base);
      --bs-body-color: var(--ink);
      --bs-primary: var(--primary);
      --bs-border-radius: var(--radius);
    }

    /* ============ 基础 Reset ============ */
    *, *::before, *::after { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: var(--font-base);
      color: var(--ink);
      background: var(--bg);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a { text-decoration: none; color: inherit; transition: color .2s ease; }
    img { max-width: 100%; display: block; }
    ul, ol { list-style: none; margin: 0; padding: 0; }
    button { border: none; background: none; }
    .no-scroll { overflow: hidden; }

    /* ============ 容器 ============ */
    .container-site {
      width: 100%;
      max-width: 1220px;
      margin: 0 auto;
      padding: 0 28px;
    }

    /* ============ App Shell 布局 ============ */
    .app-shell { min-height: 100vh; }
    .app-main {
      margin-left: var(--sidebar-w);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }
    .app-content { flex: 1; }

    /* ============ 侧边导航 ============ */
    .app-sidebar {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: var(--sidebar-w);
      background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
      display: flex;
      flex-direction: column;
      padding: 28px 20px 24px;
      z-index: 1045;
      box-shadow: 4px 0 24px rgba(15, 23, 42, .18);
      transition: transform .32s cubic-bezier(.4, 0, .2, 1);
      overflow-y: auto;
    }
    .sidebar-brand {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 26px;
      padding: 0 6px;
    }
    .brand-logo {
      font-size: 1.3rem;
      font-weight: 800;
      color: #fff;
      letter-spacing: .01em;
      line-height: 1.25;
    }
    .brand-logo:hover { color: #facc15; }
    .brand-tag {
      display: block;
      font-size: .72rem;
      color: #94a3b8;
      letter-spacing: .08em;
      margin-top: 4px;
    }
    .sidebar-close {
      display: none;
      width: 36px;
      height: 36px;
      border-radius: 10px;
      color: #cbd5e1;
      background: rgba(255, 255, 255, .08);
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      transition: background .2s, color .2s;
    }
    .sidebar-close:hover { background: rgba(255, 255, 255, .16); color: #fff; }

    .sidebar-nav { display: flex; flex-direction: column; gap: 6px; flex: 1; }
    .nav-label {
      color: #64748b;
      font-size: .72rem;
      letter-spacing: .14em;
      text-transform: uppercase;
      font-weight: 700;
      padding: 0 12px;
      margin-bottom: 6px;
    }
    .nav-link-item {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #cbd5e1;
      padding: 11px 14px;
      border-radius: 12px;
      font-size: .92rem;
      font-weight: 500;
      transition: background .2s, color .2s, transform .2s;
    }
    .nav-link-item:hover {
      background: rgba(255, 255, 255, .08);
      color: #fff;
      transform: translateX(3px);
    }
    .nav-link-item.active {
      background: linear-gradient(135deg, var(--primary), #3b82f6);
      color: #fff;
      font-weight: 600;
      box-shadow: 0 8px 20px rgba(37, 99, 235, .35);
    }
    .nav-link-item i { width: 20px; text-align: center; font-size: .95rem; }

    .sidebar-foot {
      margin-top: 22px;
      padding: 16px;
      background: rgba(255, 255, 255, .06);
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: 14px;
      color: #e2e8f0;
      font-size: .8rem;
    }
    .sidebar-foot p { margin: 0 0 6px; }
    .sidebar-foot .foot-phone { font-weight: 700; font-size: .94rem; color: #facc15; }

    /* ============ 移动端顶部栏 ============ */
    .mobile-topbar {
      display: none;
      align-items: center;
      gap: 14px;
      padding: 14px 20px;
      background: #0f172a;
      position: sticky;
      top: 0;
      z-index: 1030;
      box-shadow: 0 4px 18px rgba(15, 23, 42, .10);
    }
    .mobile-topbar .btn-menu {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: rgba(255, 255, 255, .10);
      color: #fff;
      font-size: 1.05rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background .2s;
    }
    .mobile-topbar .btn-menu:hover { background: rgba(255, 255, 255, .20); }
    .mobile-brand {
      font-size: 1.08rem;
      font-weight: 800;
      color: #fff;
      letter-spacing: .01em;
    }
    .sidebar-overlay {
      position: fixed;
      inset: 0;
      background: rgba(15, 23, 42, .6);
      backdrop-filter: blur(2px);
      opacity: 0;
      visibility: hidden;
      transition: opacity .3s, visibility .3s;
      z-index: 1040;
    }
    .sidebar-overlay.show { opacity: 1; visibility: visible; }

    /* ============ 首屏 Hero ============ */
    .category-hero {
      position: relative;
      background-size: cover;
      background-position: center;
      padding: 86px 0 80px;
      color: #fff;
      overflow: hidden;
    }
    .category-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(15, 23, 42, .92) 0%, rgba(15, 23, 42, .72) 55%, rgba(37, 99, 235, .45) 100%);
    }
    .category-hero-inner { position: relative; z-index: 2; }
    .breadcrumb-nav {
      font-size: .82rem;
      color: rgba(255, 255, 255, .75);
      margin-bottom: 18px;
      display: flex;
      gap: 8px;
      align-items: center;
    }
    .breadcrumb-nav a { color: rgba(255, 255, 255, .75); }
    .breadcrumb-nav a:hover { color: #facc15; }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, .16);
      border: 1px solid rgba(255, 255, 255, .25);
      backdrop-filter: blur(8px);
      padding: 8px 18px;
      border-radius: 40px;
      font-size: .82rem;
      letter-spacing: .06em;
      font-weight: 500;
      color: #f8fafc;
      margin-bottom: 20px;
    }
    .category-hero h1 {
      font-size: clamp(2rem, 4.5vw, 3.1rem);
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 16px;
      max-width: 700px;
      letter-spacing: -.02em;
    }
    .category-hero .hero-desc {
      font-size: 1.02rem;
      color: rgba(255, 255, 255, .88);
      max-width: 660px;
      margin-bottom: 30px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

    /* ============ 按钮系统 ============ */
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border-radius: 12px;
      padding: 11px 24px;
      font-weight: 600;
      font-size: .92rem;
      border: 1px solid transparent;
      transition: background .22s, color .22s, border-color .22s, transform .22s, box-shadow .22s;
    }
    .btn:focus-visible {
      outline: none;
      box-shadow: 0 0 0 4px rgba(37, 99, 235, .25);
    }
    .btn-brand { background: var(--accent); color: #0f172a; border-color: var(--accent); font-weight: 700; }
    .btn-brand:hover { background: #d97706; border-color: #d97706; color: #fff; transform: translateY(-2px); box-shadow: 0 10px 22px rgba(217, 119, 6, .28); }
    .btn-soft { background: rgba(255, 255, 255, .14); color: #fff; border-color: rgba(255, 255, 255, .35); backdrop-filter: blur(8px); }
    .btn-soft:hover { background: rgba(255, 255, 255, .24); color: #fff; transform: translateY(-2px); }
    .btn-outline { border-color: var(--border); color: var(--ink); background: #fff; }
    .btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

    /* ============ 板块通用 ============ */
    .section { padding: 76px 0; }
    .section-soft { background: #fff; }
    .section-head { margin-bottom: 40px; max-width: 720px; }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: .78rem;
      font-weight: 700;
      letter-spacing: .1em;
      color: var(--primary);
      background: var(--primary-light);
      border-radius: 40px;
      padding: 6px 16px;
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; letter-spacing: -.02em; margin-bottom: 10px; }
    .section-head p { color: var(--muted); font-size: .96rem; margin-bottom: 0; }

    /* ============ 核心说明卡片 ============ */
    .intro-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 32px 28px;
      height: 100%;
      box-shadow: var(--shadow-sm);
      transition: transform .25s, box-shadow .25s, border-color .25s;
    }
    .intro-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(37, 99, 235, .28); }
    .intro-icon {
      width: 54px;
      height: 54px;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--primary), #3b82f6);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 18px;
      box-shadow: 0 8px 18px rgba(37, 99, 235, .28);
    }
    .intro-card h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 10px; }
    .intro-card p { color: var(--muted); font-size: .9rem; margin-bottom: 0; }

    /* ============ 分步流程 ============ */
    .steps-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      counter-reset: step;
    }
    .step-card {
      position: relative;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px 22px 24px;
      box-shadow: var(--shadow-sm);
      transition: transform .25s, box-shadow .25s;
    }
    .step-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
    .step-num {
      font-size: .78rem;
      font-weight: 700;
      letter-spacing: .08em;
      color: var(--primary);
      background: var(--primary-light);
      display: inline-block;
      padding: 4px 12px;
      border-radius: 40px;
      margin-bottom: 14px;
    }
    .step-card .step-ic { font-size: 1.6rem; color: var(--accent); margin-bottom: 12px; }
    .step-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
    .step-card p { font-size: .87rem; color: var(--muted); margin-bottom: 0; }

    /* ============ 文章卡片 ============ */
    .post-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform .25s, box-shadow .25s;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .post-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
    .post-thumb { height: 180px; overflow: hidden; position: relative; background: #eef2ff; }
    .post-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
    .post-card:hover .post-thumb img { transform: scale(1.05); }
    .post-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
    .badge-tag {
      align-self: flex-start;
      background: var(--primary-light);
      color: var(--primary);
      font-size: .75rem;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 40px;
      margin-bottom: 12px;
    }
    .badge-tag.gold { background: var(--accent-light); color: #b45309; }
    .post-body h3 { font-size: 1.06rem; font-weight: 700; line-height: 1.45; margin-bottom: 10px; }
    .post-body p { font-size: .87rem; color: var(--muted); flex: 1; margin-bottom: 16px; }
    .post-link {
      font-size: .86rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: gap .2s, color .2s;
    }
    .post-link:hover { color: var(--primary-dark); gap: 10px; }

    /* ============ 数据统计 ============ */
    .stats-band {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #1e3a8a 100%);
      color: #fff;
      padding: 64px 0;
      position: relative;
      overflow: hidden;
    }
    .stats-band::after {
      content: "";
      position: absolute;
      width: 420px;
      height: 420px;
      border-radius: 50%;
      background: rgba(37, 99, 235, .22);
      top: -220px;
      right: -120px;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
      z-index: 2;
    }
    .stat-item { text-align: center; padding: 16px; }
    .stat-num { font-size: 2.6rem; font-weight: 800; line-height: 1.1; color: #facc15; }
    .stat-label { color: rgba(255, 255, 255, .78); font-size: .9rem; margin-top: 8px; }

    /* ============ FAQ ============ */
    .accordion-item {
      border: 1px solid var(--border);
      border-radius: 14px !important;
      margin-bottom: 14px;
      overflow: hidden;
      background: #fff;
      box-shadow: var(--shadow-sm);
    }
    .accordion-button {
      background: #fff;
      font-weight: 600;
      color: var(--ink);
      padding: 18px 20px;
      font-size: .96rem;
      box-shadow: none !important;
      transition: background .2s, color .2s;
    }
    .accordion-button:not(.collapsed) { background: var(--primary-light); color: var(--primary-dark); }
    .accordion-button:focus { box-shadow: 0 0 0 4px rgba(37, 99, 235, .14) !important; }
    .accordion-button::after { background-size: 16px; }
    .accordion-body { color: var(--muted); padding: 0 22px 20px; font-size: .9rem; }

    /* ============ CTA ============ */
    .cta-card {
      background: linear-gradient(120deg, #1e3a8a 0%, #2563eb 60%, #3b82f6 100%);
      border-radius: 22px;
      padding: 52px 46px;
      color: #fff;
      position: relative;
      overflow: hidden;
    }
    .cta-card::before {
      content: "\f0c2";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      position: absolute;
      right: -30px;
      bottom: -50px;
      font-size: 12rem;
      opacity: .12;
    }
    .cta-card h2 { font-size: 1.65rem; font-weight: 800; margin-bottom: 10px; }
    .cta-card p { color: rgba(255, 255, 255, .85); max-width: 520px; margin-bottom: 24px; }
    .cta-card .btn-brand { background: #fff; color: #1e3a8a; border-color: #fff; }
    .cta-card .btn-brand:hover { background: #facc15; border-color: #facc15; color: #0f172a; transform: translateY(-2px); }
    .cta-card .btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .55); }
    .cta-card .btn-ghost:hover { background: rgba(255, 255, 255, .14); color: #fff; }
    .cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }

    /* ============ 页脚 ============ */
    .app-footer {
      background: #0f172a;
      color: #94a3b8;
      margin-top: auto;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1.2fr;
      gap: 40px;
      padding: 56px 28px 40px;
    }
    .footer-logo { font-size: 1.2rem; font-weight: 800; color: #fff; margin-bottom: 10px; display: inline-block; }
    .footer-logo:hover { color: #facc15; }
    .footer-brand p { font-size: .88rem; line-height: 1.7; margin-bottom: 0; max-width: 340px; }
    .footer-links h4, .footer-contact h4 { color: #fff; font-size: .96rem; font-weight: 700; margin-bottom: 14px; }
    .footer-links ul li { margin-bottom: 8px; }
    .footer-links ul li a { color: #94a3b8; font-size: .88rem; transition: color .2s, padding-left .2s; }
    .footer-links ul li a:hover { color: #facc15; padding-left: 4px; }
    .footer-contact p { font-size: .88rem; margin-bottom: 8px; }
    .footer-contact i { color: #3b82f6; width: 22px; }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .08);
      padding: 18px 28px;
      text-align: center;
      font-size: .82rem;
      color: #64748b;
    }
    .footer-bottom p { margin: 0; }

    /* ============ 响应式 ============ */
    @media (max-width: 991.98px) {
      .app-main { margin-left: 0; }
      .mobile-topbar { display: flex; }
      .app-sidebar { transform: translateX(-100%); }
      .app-sidebar.open { transform: translateX(0); }
      .sidebar-close { display: inline-flex; }
      .section { padding: 60px 0; }
    }
    @media (max-width: 767.98px) {
      .container-site { padding: 0 20px; }
      .section-tag { font-size: .72rem; }
      .steps-wrap { grid-template-columns: 1fr 1fr; gap: 14px; }
      .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
      .cta-card { padding: 40px 24px; }
      .footer-top { grid-template-columns: 1fr; gap: 28px; padding: 44px 20px 30px; }
      .category-hero { padding: 64px 0 56px; }
    }
    @media (max-width: 575.98px) {
      .hero-actions { width: 100%; }
      .hero-actions .btn { flex: 1; justify-content: center; }
      .steps-wrap { grid-template-columns: 1fr; }
      .post-thumb { height: 160px; }
      .cta-card .cta-actions { flex-direction: column; }
      .cta-card .cta-actions .btn { width: 100%; justify-content: center; }
    }

/* roulang page: article */
:root {
  --primary: #4361ee;
  --primary-dark: #3a0ca3;
  --primary-light: #eef2ff;
  --accent: #f77f00;
  --accent-light: #fff4e6;
  --bg: #f6f8fc;
  --surface: #ffffff;
  --surface-soft: #f1f3f9;
  --text: #1e293b;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(30, 41, 59, 0.06);
  --shadow: 0 10px 34px rgba(30, 41, 59, 0.10);
  --shadow-lg: 0 20px 54px rgba(30, 41, 59, 0.15);
  --sidebar-w: 270px;
  --transition: all 0.25s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 3000;
  transition: width 0.1s ease;
  border-radius: 0 4px 4px 0;
}

.container-site {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Sidebar ===== */
.app-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 28px 18px 20px;
  display: flex;
  flex-direction: column;
  z-index: 1040;
  overflow-y: auto;
}

.sidebar-header {
  padding: 4px 10px 22px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.brand-logo {
  display: block;
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.3px;
  line-height: 1.3;
}

.brand-logo:hover {
  color: var(--primary-dark);
}

.brand-sub {
  font-size: 12px;
  color: var(--text-weak);
  margin: 4px 0 0;
  letter-spacing: 0.04em;
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-weak);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0 12px 10px;
  display: block;
}

.nav-link-item {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-weight: 500;
  font-size: 15px;
  transition: var(--transition);
  margin-bottom: 4px;
}

.nav-link-item i {
  width: 20px;
  text-align: center;
  font-size: 16px;
  color: var(--text-weak);
  transition: var(--transition);
}

.nav-link-item:hover {
  background: var(--surface-soft);
  color: var(--primary);
  transform: translateX(3px);
}

.nav-link-item:hover i {
  color: var(--primary);
}

.nav-link-item.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 8px 22px rgba(67, 97, 238, 0.30);
}

.nav-link-item.active i {
  color: #ffffff;
}

.sidebar-footer {
  padding: 16px 10px 4px;
  border-top: 1px solid var(--border);
  margin-top: 16px;
}

.sidebar-footer p {
  font-size: 13px;
  color: var(--text-weak);
  margin: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-footer i {
  color: var(--accent);
  width: 16px;
  text-align: center;
}

/* ===== Mobile Header ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 1050;
  align-items: center;
  padding: 0 16px;
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.05);
}

.mobile-menu-btn {
  background: var(--surface-soft);
  border: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  font-size: 18px;
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.mobile-brand {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  margin-left: 14px;
  letter-spacing: -0.2px;
}

/* ===== Mobile Drawer ===== */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(3px);
  z-index: 1060;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.drawer-backdrop.show {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 290px;
  height: 100vh;
  background: var(--surface);
  z-index: 1070;
  transform: translateX(-100%);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  box-shadow: none;
}

.mobile-drawer.open {
  transform: translateX(0);
  box-shadow: 0 0 60px rgba(15, 23, 42, 0.20);
}

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.drawer-brand {
  font-size: 19px;
  font-weight: 800;
  color: var(--primary);
}

.drawer-close {
  background: var(--surface-soft);
  border: none;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  font-size: 16px;
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.drawer-close:hover {
  background: #fee2e2;
  color: #dc2626;
}

.drawer-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

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

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: 72px 0 64px;
  background-size: cover;
  background-position: center;
  color: #ffffff;
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(67, 97, 238, 0.78) 100%);
}

.page-banner .container-site {
  position: relative;
  z-index: 1;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.breadcrumb-nav a {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
}

.breadcrumb-nav a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.breadcrumb-nav .sep {
  color: rgba(255, 255, 255, 0.4);
}

.breadcrumb-nav .current {
  color: #ffffff;
  font-weight: 600;
}

.page-banner h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 12px;
  letter-spacing: -0.5px;
  color: #ffffff;
}

.banner-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 680px;
  margin: 0;
}

/* ===== Article Layout ===== */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  padding: 48px 0 16px;
  align-items: start;
}

.article-main {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 44px 44px 40px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

.badge-category {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
}

.meta-item {
  font-size: 14px;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-item i {
  color: var(--accent);
}

.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
}

.article-content p {
  margin: 0 0 1.4em;
}

.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 1.8em 0 0.8em;
  color: var(--text);
  letter-spacing: -0.3px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--surface-soft);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 1.6em 0 0.7em;
  color: var(--text);
}

.article-content img {
  max-width: 100%;
  border-radius: 14px;
  margin: 24px auto;
  box-shadow: var(--shadow-sm);
}

.article-content a {
  font-weight: 500;
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.4em;
  padding-left: 1.4em;
}

.article-content li {
  margin-bottom: 0.5em;
}

.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  border-radius: 0 12px 12px 0;
  padding: 18px 22px;
  margin: 1.6em 0;
  color: var(--text-weak);
  font-style: italic;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 15px;
}

.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 10px 14px;
}

.article-content table th {
  background: var(--surface-soft);
  font-weight: 600;
}

.article-tags {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.tags-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tag-link {
  display: inline-block;
  background: var(--surface-soft);
  color: var(--text);
  font-size: 13px;
  padding: 5px 13px;
  border-radius: 999px;
  transition: var(--transition);
  border: 1px solid transparent;
}

.tag-link:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

/* ===== Not Found ===== */
.not-found-box {
  text-align: center;
  padding: 60px 20px;
}

.not-found-box i {
  font-size: 48px;
  color: var(--border);
  margin-bottom: 18px;
}

.not-found-box h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.not-found-box p {
  color: var(--text-weak);
  margin-bottom: 26px;
}

/* ===== Article Side ===== */
.article-side {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.side-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 24px;
}

.brand-card-img {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 16px;
}

.brand-card-img img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.side-card h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 10px;
}

.side-card p {
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 16px;
  line-height: 1.7;
}

.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: 12px;
  padding: 11px 26px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 6px 18px rgba(67, 97, 238, 0.25);
  cursor: pointer;
}

.btn-primary-custom:hover {
  background: var(--primary-dark);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(67, 97, 238, 0.35);
}

.btn-outline-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 12px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}

.btn-outline-custom:hover {
  background: var(--primary);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(67, 97, 238, 0.25);
}

.btn-outline-custom.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
  border-radius: 10px;
}

.side-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.side-nav-list li {
  border-bottom: 1px solid var(--surface-soft);
}

.side-nav-list li:last-child {
  border-bottom: none;
}

.side-nav-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 6px;
  color: var(--text);
  font-weight: 500;
  font-size: 14px;
  border-radius: 8px;
  transition: var(--transition);
}

.side-nav-list a i {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 7px;
  font-size: 12px;
}

.side-nav-list a:hover {
  color: var(--primary);
  background: var(--surface-soft);
  padding-left: 10px;
}

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

.info-card ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  font-size: 14px;
  color: var(--text);
  border-bottom: 1px dashed var(--border);
}

.info-card ul li:last-child {
  border-bottom: none;
}

.info-card ul li i {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 8px;
  font-size: 13px;
  flex-shrink: 0;
}

/* ===== Related Section ===== */
.related-section {
  padding: 56px 0 64px;
}

.section-head {
  text-align: center;
  margin-bottom: 38px;
}

.section-head .section-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 16px;
  font-size: 22px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--text);
  margin: 0 0 8px;
  letter-spacing: -0.4px;
}

.section-head p {
  color: var(--text-weak);
  font-size: 15px;
  max-width: 560px;
  margin: 0 auto;
}

.related-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(67, 97, 238, 0.3);
}

.related-card-img {
  position: relative;
  height: 190px;
  overflow: hidden;
}

.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.related-card:hover .related-card-img img {
  transform: scale(1.06);
}

.related-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.related-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 10px;
}

.related-card-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.related-card-body .btn-outline-custom {
  align-self: flex-start;
}

/* ===== CTA ===== */
.cta-section {
  padding: 56px 0;
  background: linear-gradient(135deg, #1e293b 0%, #3a0ca3 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 260px;
  height: 260px;
  background: rgba(247, 127, 0, 0.12);
  border-radius: 50%;
}

.cta-section::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: 10%;
  width: 220px;
  height: 220px;
  background: rgba(67, 97, 238, 0.20);
  border-radius: 50%;
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  padding: 12px 0;
}

.cta-icon {
  width: 62px;
  height: 62px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #ffffff;
  margin: 0 auto 20px;
}

.cta-inner h2 {
  color: #ffffff;
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 10px;
  letter-spacing: -0.4px;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  margin-bottom: 30px;
}

.cta-buttons {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-light-custom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  color: var(--text);
  border: none;
  border-radius: 12px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}

.btn-light-custom:hover {
  background: var(--accent);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(247, 127, 0, 0.35);
}

.btn-outline-light-custom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 12px;
  padding: 10px 26px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}

.btn-outline-light-custom:hover {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.app-footer {
  background: #0f172a;
  color: #cbd5e1;
  margin-top: auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
  padding: 56px 24px 40px;
}

.footer-brand .footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
  display: inline-block;
}

.footer-brand p {
  font-size: 14px;
  color: #94a3b8;
  line-height: 1.8;
  max-width: 360px;
  margin: 0;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: 0.03em;
}

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

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: #94a3b8;
  font-size: 14px;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #ffffff;
  padding-left: 5px;
}

.footer-contact p {
  font-size: 14px;
  color: #94a3b8;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
}

.footer-contact i {
  color: var(--accent);
  width: 20px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #64748b;
  margin: 0;
}

/* ===== Bootstrap 5 override ===== */
.btn {
  border-radius: 10px;
  font-weight: 500;
}

/* ===== Responsive ===== */
@media (max-width: 1199px) {
  .container-site {
    padding-left: 20px;
    padding-right: 20px;
  }

  .article-layout {
    grid-template-columns: minmax(0, 1fr) 290px;
    gap: 24px;
  }
}

@media (max-width: 991px) {
  .app-sidebar {
    display: none;
  }

  .mobile-header {
    display: flex;
  }

  .main-content {
    margin-left: 0;
    padding-top: 64px;
  }

  .article-layout {
    grid-template-columns: 1fr;
    padding: 32px 0 10px;
  }

  .article-side {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 767px) {
  .page-banner {
    padding: 48px 0 40px;
  }

  .article-main {
    padding: 28px 22px;
  }

  .article-meta {
    gap: 12px;
  }

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

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

  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 44px 20px 32px;
  }
}

@media (max-width: 575px) {
  .container-site {
    padding-left: 16px;
    padding-right: 16px;
  }

  .mobile-header {
    padding: 0 12px;
  }

  .article-main {
    padding: 22px 16px;
  }

  .article-content {
    font-size: 15px;
  }

  .article-content h2 {
    font-size: 21px;
  }

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

  .related-card-img {
    height: 160px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-buttons .btn {
    justify-content: center;
  }
}

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-soft: #eff6ff;
            --accent: #10b981;
            --accent-soft: #ecfdf5;
            --warm: #f59e0b;
            --bg: #f6f9fc;
            --bg-soft: #f1f5f9;
            --surface: #ffffff;
            --border: #e2e8f0;
            --text: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .08);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, .08);
            --shadow-lg: 0 16px 40px rgba(15, 23, 42, .12);
            --font-sans: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
            --sidebar-width: 264px;
            --ease: cubic-bezier(.22, .61, .36, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s;
        }

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

        button {
            font-family: inherit;
        }

        .app-shell {
            min-height: 100vh;
            background: var(--bg);
        }

        .main-content {
            margin-left: var(--sidebar-width);
            transition: margin .3s var(--ease);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .container-site {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: #fff;
            border-right: 1px solid var(--border);
            padding: 28px 18px 20px;
            display: flex;
            flex-direction: column;
            z-index: 1045;
        }

        .sidebar-brand {
            margin-bottom: 28px;
            padding: 0 8px;
        }

        .logo-text {
            font-size: 21px;
            font-weight: 800;
            letter-spacing: .3px;
            color: var(--text);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .logo-text .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 11px;
            flex: 0 0 36px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
        }

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

        .nav-label {
            font-size: 12px;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: .12em;
            text-transform: uppercase;
            padding: 0 12px;
            margin-bottom: 10px;
        }

        .nav-link-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 12px;
            color: var(--text-muted);
            font-weight: 600;
            font-size: 15px;
            transition: background-color .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
        }

        .nav-link-item i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            flex: 0 0 20px;
        }

        .nav-link-item:hover {
            background: var(--bg-soft);
            color: var(--text);
        }

        .nav-link-item.active {
            background: var(--primary-soft);
            color: var(--primary-dark);
        }

        .sidebar-note {
            margin-top: 24px;
            background: var(--bg-soft);
            border-radius: 14px;
            padding: 16px;
            display: flex;
            gap: 10px;
            align-items: flex-start;
            color: var(--text-muted);
            font-size: 13px;
            line-height: 1.6;
        }

        .sidebar-note i {
            color: var(--accent);
            margin-top: 2px;
        }

        .mobile-topbar {
            position: sticky;
            top: 0;
            z-index: 1035;
            height: 64px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            box-shadow: 0 2px 12px rgba(15, 23, 42, .04);
        }

        .mobile-menu-btn {
            width: 42px;
            height: 42px;
            border: none;
            border-radius: 12px;
            background: var(--bg-soft);
            color: var(--text);
            font-size: 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .mobile-logo {
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
        }

        .mobile-cta {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--primary-soft);
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .mobile-nav {
            width: 300px;
            max-width: 86vw;
            background: #fff;
        }

        .mobile-nav .offcanvas-header {
            padding: 20px 22px;
            border-bottom: 1px solid var(--border);
        }

        .mobile-nav .offcanvas-body {
            padding: 20px 16px;
        }

        .page-hero {
            position: relative;
            margin: 28px 32px 0;
            border-radius: 28px;
            overflow: hidden;
            padding: 68px 56px;
            background-image: linear-gradient(105deg, rgba(15, 23, 42, .86), rgba(37, 99, 235, .82) 55%, rgba(16, 185, 129, .72)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }

        .page-hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .16);
            border: 1px solid rgba(255, 255, 255, .24);
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 13px;
            font-weight: 600;
            backdrop-filter: blur(6px);
        }

        .page-hero h1 {
            font-size: 42px;
            font-weight: 800;
            letter-spacing: -.02em;
            margin: 18px 0 14px;
        }

        .page-hero .hero-sub {
            font-size: 16px;
            color: rgba(255, 255, 255, .88);
            max-width: 620px;
            margin-bottom: 26px;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .76);
            margin-bottom: 18px;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, .88);
            text-decoration: none;
        }

        .breadcrumb-nav a:hover {
            color: #fff;
        }

        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 26px;
        }

        .hero-stat {
            padding-right: 28px;
            border-right: 1px solid rgba(255, 255, 255, .22);
        }

        .hero-stat:last-child {
            border-right: none;
        }

        .hero-stat .num {
            font-size: 26px;
            font-weight: 800;
        }

        .hero-stat .txt {
            font-size: 13px;
            color: rgba(255, 255, 255, .78);
        }

        .page-body {
            padding: 48px 32px 56px;
            flex: 1;
        }

        .main-wrap {
            max-width: 1180px;
            margin: 0 auto;
        }

        .section-block {
            margin-bottom: 64px;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .section-head .eyebrow {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: .1em;
            margin-bottom: 6px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text);
            margin: 0;
        }

        .section-head .section-desc {
            color: var(--text-muted);
            font-size: 15px;
            margin-top: 8px;
            max-width: 560px;
        }

        .section-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: gap .2s var(--ease);
        }

        .section-more:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

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

        .info-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px;
            display: flex;
            gap: 18px;
            align-items: flex-start;
            transition: box-shadow .3s var(--ease), transform .3s var(--ease);
        }

        .info-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .info-card .icon-badge {
            width: 50px;
            height: 50px;
            border-radius: 16px;
            flex: 0 0 50px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .icon-blue {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .icon-green {
            background: var(--accent-soft);
            color: var(--accent);
        }

        .info-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .info-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform .35s var(--ease), box-shadow .35s var(--ease);
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .news-cover {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s var(--ease);
        }

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

        .news-cover .tag-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            color: var(--primary-dark);
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .news-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--text);
        }

        .news-body h3 a:hover {
            color: var(--primary);
        }

        .news-body p {
            font-size: 14px;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 18px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-light);
        }

        .news-meta .date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-meta .read-more {
            color: var(--primary);
            font-weight: 600;
        }

        .timeline {
            position: relative;
            padding-left: 36px;
            margin-top: 8px;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 10px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 32px;
        }

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

        .timeline-item::before {
            content: "";
            position: absolute;
            left: -32px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--primary);
            box-shadow: 0 0 0 4px var(--primary-soft);
        }

        .timeline-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .3s var(--ease), transform .3s var(--ease);
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-md);
        }

        .timeline-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }

        .timeline-card .t-date {
            font-size: 12px;
            color: var(--primary);
            font-weight: 700;
            letter-spacing: .06em;
            margin-bottom: 8px;
            display: inline-block;
            background: var(--primary-soft);
            border-radius: 999px;
            padding: 4px 12px;
        }

        .timeline-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }

        .announce-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .announce-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 18px;
            transition: box-shadow .3s var(--ease), transform .3s var(--ease);
        }

        .announce-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }

        .announce-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            flex: 0 0 48px;
            background: var(--warm);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .announce-icon.green {
            background: var(--accent);
        }

        .announce-icon.blue {
            background: var(--primary);
        }

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

        .announce-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text);
        }

        .announce-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }

        .announce-tag {
            flex: 0 0 auto;
            font-size: 12px;
            font-weight: 700;
            background: var(--bg-soft);
            color: var(--text-muted);
            border-radius: 999px;
            padding: 6px 14px;
        }

        .topic-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .topic-tag {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            transition: all .25s var(--ease);
        }

        .topic-tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
        }

        .accordion-custom .accordion-item {
            border: 1px solid var(--border);
            border-radius: 16px !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: none;
        }

        .accordion-custom .accordion-button {
            font-weight: 700;
            color: var(--text);
            font-size: 16px;
            padding: 20px 24px;
            background: #fff;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--primary-soft);
            color: var(--primary-dark);
            box-shadow: none;
        }

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

        .accordion-custom .accordion-body {
            padding: 6px 24px 22px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .cta-block {
            background: linear-gradient(120deg, #1e3a8a, #2563eb 55%, #10b981);
            border-radius: 28px;
            padding: 56px 48px;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            background: rgba(255, 255, 255, .08);
            border-radius: 50%;
        }

        .cta-block::after {
            content: "";
            position: absolute;
            left: 10%;
            bottom: -80px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, .06);
            border-radius: 50%;
        }

        .cta-block h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-block p {
            font-size: 15px;
            color: rgba(255, 255, 255, .9);
            max-width: 560px;
            margin: 0 auto 30px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .btn-cta {
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            border: none;
            border-radius: 14px;
            padding: 14px 32px;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: transform .3s, box-shadow .3s;
        }

        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, .14);
            color: var(--primary-dark);
        }

        .btn-cta-outline {
            background: transparent;
            color: #fff;
            font-weight: 700;
            border: 2px solid rgba(255, 255, 255, .7);
            border-radius: 14px;
            padding: 12px 30px;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: background-color .3s, border-color .3s;
        }

        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            color: #fff;
        }

        .app-footer {
            background: #0f1e3d;
            color: #a9b7d0;
            margin-top: 16px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 44px;
            padding-top: 56px;
            padding-bottom: 44px;
        }

        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

        .footer-links a {
            color: #a9b7d0;
            font-size: 14px;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-contact p {
            font-size: 14px;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #8ca0be;
        }

        @media (max-width: 991.98px) {
            .sidebar {
                display: none;
            }
            .main-content {
                margin-left: 0;
            }
            .page-hero {
                margin: 16px 16px 0;
                padding: 48px 24px;
                border-radius: 22px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-body {
                padding: 36px 16px 44px;
            }
            .container-site {
                padding-left: 20px;
                padding-right: 20px;
            }
            .news-grid {
                grid-template-columns: 1fr 1fr;
            }
            .about-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767.98px) {
            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-head h2 {
                font-size: 25px;
            }
            .page-hero {
                padding: 42px 22px;
            }
            .page-hero .hero-sub {
                font-size: 15px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat {
                padding-right: 16px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
            }
            .cta-block {
                padding: 44px 24px;
                border-radius: 22px;
            }
            .cta-block h2 {
                font-size: 25px;
            }
        }

        @media (min-width: 992px) {
            .mobile-topbar {
                display: none;
            }
            .mobile-nav {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .page-hero {
                margin: 12px 12px 0;
                padding: 36px 18px;
                border-radius: 18px;
            }
            .page-body {
                padding: 32px 12px 40px;
            }
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
            .timeline {
                padding-left: 30px;
            }
            .announce-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .announce-tag {
                align-self: flex-start;
            }
            .cta-actions {
                flex-direction: column;
            }
            .btn-cta,
            .btn-cta-outline {
                justify-content: center;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --dark: #0f172a;
  --dark-light: #1e293b;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #0f172a;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 12px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 16px 48px rgba(37, 99, 235, 0.16);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border-radius: var(--radius-sm);
}

.container-site {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.app-wrapper {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 270px;
  background: var(--dark);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1040;
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  overflow-y: auto;
  transition: var(--transition);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  margin-bottom: 36px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.sidebar-brand i {
  font-size: 26px;
  color: var(--accent-light);
  background: rgba(245, 158, 11, 0.15);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-brand:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.nav-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: rgba(255, 255, 255, 0.4);
  padding: 0 12px;
  margin-bottom: 14px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-link-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border-radius: 14px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  border: 1px solid transparent;
}

.nav-link-item i {
  width: 20px;
  text-align: center;
  font-size: 17px;
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}

.nav-link-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.nav-link-item:hover i {
  color: var(--accent-light);
}

.nav-link-item.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.nav-link-item.active i {
  color: #fff;
}

.nav-link-item.active::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 28px;
  background: var(--accent);
  border-radius: 0 4px 4px 0;
}

.nav-link-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.sidebar-help {
  margin-top: 24px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
}

.sidebar-help p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 10px;
}

.main-area {
  flex: 1;
  margin-left: 270px;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 1030;
  background: var(--dark);
  padding: 14px 20px;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.2);
}

.topbar-brand {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
}

.menu-toggle {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.menu-toggle:hover {
  background: var(--primary);
}

.sidebar-overlay {
  display: none;
}

.content {
  flex: 1;
}

/* Hero */
.hero-banner {
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.82), rgba(15, 23, 42, 0.92)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  padding: 90px 40px 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-banner::after {
  content: "";
  position: absolute;
  bottom: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 1200px;
  height: 200px;
  background: radial-gradient(ellipse at center, rgba(37, 99, 235, 0.35), transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 7px 18px;
  border-radius: 100px;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 26px;
  letter-spacing: 0.6px;
}

.hero-badge i {
  color: var(--accent-light);
}

.hero-banner h1 {
  font-size: 46px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.hero-banner h1 span {
  color: var(--accent-light);
}

.hero-subtitle {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.82);
  max-width: 660px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-search {
  max-width: 560px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-search .input-group {
  background: #fff;
  border-radius: 60px;
  padding: 6px 6px 6px 20px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
}

.hero-search .form-control {
  border: none;
  background: transparent;
  font-size: 15px;
  padding: 12px 8px;
  color: var(--text);
  box-shadow: none;
}

.hero-search .form-control:focus {
  outline: none;
  box-shadow: none;
}

.hero-search .btn-search {
  background: var(--primary);
  border: none;
  border-radius: 50px;
  padding: 11px 28px;
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}

.hero-search .btn-search:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.hero-meta {
  margin-top: 40px;
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

.hero-meta-item {
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-meta-item i {
  color: var(--accent-light);
}

/* Section common */
.section-block {
  padding: 80px 40px;
}

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

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.section-title span {
  color: var(--primary);
}

.section-subtitle {
  color: var(--text-weak);
  font-size: 15px;
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Service cards */
.service-section {
  background: var(--bg);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.service-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.3);
}

.service-card-img {
  height: 160px;
  overflow: hidden;
  position: relative;
}

.service-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.service-card:hover .service-card-img img {
  transform: scale(1.06);
}

.service-card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(15, 23, 42, 0.2));
}

.service-card-icon {
  position: absolute;
  bottom: 16px;
  left: 20px;
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.4);
  z-index: 2;
  border: 3px solid #fff;
}

.service-card-body {
  padding: 24px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.service-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.service-card-body p {
  font-size: 13.5px;
  color: var(--text-weak);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 14px;
}

.service-card-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.service-card-link:hover {
  gap: 10px;
  color: var(--primary-dark);
}

/* Process */
.process-section {
  background: var(--surface);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  max-width: 1100px;
  margin: 0 auto;
  counter-reset: step;
}

.process-item {
  text-align: center;
  padding: 36px 22px;
  background: var(--surface-soft);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  position: relative;
  transition: var(--transition);
}

.process-item:hover {
  background: var(--surface);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.process-step-num {
  font-size: 32px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
  margin-bottom: 10px;
}

.process-item h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.process-item p {
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.7;
}

.process-line {
  position: absolute;
  top: 50%;
  right: -28px;
  width: 28px;
  height: 2px;
  background: var(--border);
  z-index: 2;
}

.process-line::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

/* Articles */
.articles-section {
  background: var(--bg);
}

.articles-list {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.article-item {
  display: flex;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  padding: 18px;
  transition: var(--transition);
  align-items: center;
}

.article-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(6px);
  border-color: rgba(37, 99, 235, 0.25);
}

.article-cover {
  width: 140px;
  height: 96px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-content {
  flex: 1;
  min-width: 0;
}

.article-tag {
  display: inline-block;
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 6px;
}

.article-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.4;
  transition: var(--transition);
}

.article-item:hover .article-content h3 {
  color: var(--primary);
}

.article-content p {
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

.article-meta {
  display: flex;
  gap: 18px;
  font-size: 12px;
  color: var(--text-weak);
  align-items: center;
}

.article-meta i {
  margin-right: 4px;
  color: var(--primary-light);
}

/* Stats */
.stats-section {
  background: var(--dark);
  padding: 70px 40px;
  position: relative;
  overflow: hidden;
  background-image: linear-gradient(rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.92)), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.stat-item .stat-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent-light);
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-item .stat-label {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  letter-spacing: 0.5px;
}

/* FAQ */
.faq-section {
  background: var(--surface);
}

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

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  background: var(--surface-soft);
  transition: var(--transition);
  overflow: hidden;
}

.faq-item:hover {
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  cursor: pointer;
  gap: 16px;
  user-select: none;
}

.faq-question h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
  line-height: 1.5;
  flex: 1;
}

.faq-icon {
  width: 32px;
  height: 32px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.open .faq-icon {
  background: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}

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

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* CTA */
.cta-section {
  padding: 70px 40px;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #1d4ed8 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: rgba(245, 158, 11, 0.18);
  border-radius: 50%;
  filter: blur(60px);
}

.cta-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-xl);
  padding: 44px 48px;
  backdrop-filter: blur(10px);
}

.cta-inner h2 {
  color: #fff;
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 10px;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  margin-bottom: 26px;
  line-height: 1.8;
}

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

.btn-brand {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 12px 32px;
  border-radius: 60px;
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
}

.btn-brand:hover {
  background: var(--primary-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.5);
}

.btn-accent {
  background: var(--accent);
  color: var(--dark);
  border: none;
  padding: 12px 32px;
  border-radius: 60px;
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
}

.btn-accent:hover {
  background: var(--accent-light);
  color: var(--dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(245, 158, 11, 0.5);
}

.btn-outline-light {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  color: #fff;
  padding: 12px 32px;
  border-radius: 60px;
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: #fff;
}

.btn:focus-visible,
.btn-brand:focus-visible,
.btn-accent:focus-visible,
.btn-outline-light:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* Footer */
.app-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.6);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding: 56px 24px 40px;
}

.footer-brand .footer-logo {
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 14px;
  display: block;
}

.footer-brand .footer-logo:hover {
  color: var(--accent-light);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 380px;
  margin-bottom: 0;
}

.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-links ul li a::before {
  content: "›";
  color: var(--accent-light);
  font-size: 16px;
  line-height: 1;
}

.footer-links ul li a:hover {
  color: #fff;
  transform: translateX(4px);
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  margin-bottom: 10px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-contact p i {
  color: var(--accent-light);
  width: 18px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom p {
  margin: 0;
}

/* Responsive */
@media (max-width: 1199.98px) {
  .service-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024.98px) {
  .section-block {
    padding: 60px 28px;
  }
  .hero-banner {
    padding: 68px 28px 80px;
  }
  .hero-banner h1 {
    font-size: 38px;
  }
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .process-line {
    display: none;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768.98px) {
  .sidebar {
    transform: translateX(-100%);
    box-shadow: none;
  }
  .sidebar.show {
    transform: translateX(0);
    box-shadow: 0 0 60px rgba(15, 23, 42, 0.5);
  }
  .sidebar-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    z-index: 1030;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  .sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
  }
  .main-area {
    margin-left: 0;
  }
  .topbar {
    display: flex;
  }
  .hero-banner {
    padding: 52px 22px 64px;
  }
  .hero-banner h1 {
    font-size: 30px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .hero-search .btn-search {
    padding: 10px 20px;
  }
  .service-grid {
    grid-template-columns: 1fr;
  }
  .article-item {
    flex-direction: column;
    align-items: flex-start;
  }
  .article-cover {
    width: 100%;
    height: 160px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta-inner {
    padding: 32px 22px;
  }
  .cta-inner h2 {
    font-size: 24px;
  }
}

@media (max-width: 520px) {
  .section-block {
    padding: 48px 18px;
  }
  .container-site {
    padding-left: 16px;
    padding-right: 16px;
  }
  .hero-banner {
    padding: 46px 16px 54px;
  }
  .hero-banner h1 {
    font-size: 25px;
  }
  .hero-subtitle {
    font-size: 14px;
  }
  .hero-meta {
    gap: 16px;
    flex-direction: column;
    align-items: center;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .section-title {
    font-size: 26px;
  }
  .section-subtitle {
    font-size: 14px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .stat-item .stat-num {
    font-size: 32px;
  }
  .cta-btns {
    flex-direction: column;
    align-items: stretch;
  }
  .btn-brand,
  .btn-accent,
  .btn-outline-light {
    justify-content: center;
    width: 100%;
  }
}