/* roulang page: index */
:root {
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #eef2ff;
  --accent: #f97316;
  --accent-light: #fff7ed;
  --bg: #f6f7fb;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-card: 0 6px 24px rgba(15, 23, 42, .06);
  --shadow-hover: 0 16px 44px rgba(79, 70, 229, .14);
  --space-section: 96px;
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: color .2s ease, opacity .2s ease; }
img { max-width: 100%; height: auto; display: block; }
button, input { font-family: inherit; }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
.section { padding-top: var(--space-section); padding-bottom: var(--space-section); }

/* ===== 按钮 ===== */
.site-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 999px;
  border: 2px solid transparent;
  transition: all .25s ease;
  cursor: pointer;
  white-space: nowrap;
}
.site-btn i { font-size: 14px; }
.site-btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(79, 70, 229, .28); }
.site-btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(79, 70, 229, .34); }
.site-btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.site-btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.site-btn-accent { background: var(--accent); color: #fff; box-shadow: 0 6px 18px rgba(249, 115, 22, .28); }
.site-btn-accent:hover { background: #ea6a0a; transform: translateY(-2px); box-shadow: 0 10px 26px rgba(249, 115, 22, .36); }
.site-btn-sm { padding: 8px 20px; font-size: 14px; }
.site-btn-lg { padding: 15px 40px; font-size: 17px; }

/* ===== 徽章 ===== */
.site-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .5px;
}
.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-accent { background: var(--accent-light); color: var(--accent); }
.badge-success { background: #ecfdf5; color: #059669; }

/* ===== Header / 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  color: var(--text);
  white-space: nowrap;
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #7c6cf6);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  font-weight: 900;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(79, 70, 229, .28);
}
.brand:hover { color: var(--primary); }
.main-nav { display: flex; align-items: center; }
.nav-list { display: flex; list-style: none; margin: 0; padding: 0; gap: 6px; }
.nav-list li { position: relative; }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: #334155;
  transition: all .22s ease;
}
.nav-link i { font-size: 12px; opacity: .75; }
.nav-link:hover { background: var(--primary-light); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(79, 70, 229, .24); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-actions .nav-btn { padding: 9px 20px; border-radius: 999px; font-size: 14px; font-weight: 600; background: var(--primary-light); color: var(--primary); border: none; cursor: pointer; transition: all .22s ease; }
.nav-actions .nav-btn:hover { background: var(--primary); color: #fff; }
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 12px;
  font-size: 18px;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all .2s ease;
}
.nav-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* Mega Menu */
.has-mega .mega-panel {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px rgba(15, 23, 42, .14);
  padding: 20px 24px;
  min-width: 520px;
  display: flex;
  gap: 32px;
  opacity: 0;
  visibility: hidden;
  transition: all .25s ease;
  border: 1px solid var(--border);
}
.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.mega-col { flex: 1; }
.mega-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: none;
  letter-spacing: 1px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.mega-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: #334155;
  transition: all .2s ease;
}
.mega-item i { width: 18px; color: var(--primary); font-size: 13px; }
.mega-item:hover { background: var(--primary-light); color: var(--primary); transform: translateX(4px); }

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, rgba(79, 70, 229, .10), rgba(249, 115, 22, .07)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 120px 0 96px;
  border-bottom: 1px solid var(--border);
}
.hero-inner { position: relative; z-index: 2; max-width: 820px; margin: 0 auto; text-align: center; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255,255,255,.85);
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  box-shadow: 0 4px 20px rgba(15,23,42,.06);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.hero-badge .dot { width: 8px; height: 8px; background: #10b981; border-radius: 50%; box-shadow: 0 0 0 4px rgba(16,185,129,.15); }
.hero h1 {
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 20px;
  color: var(--text);
}
.hero h1 span {
  background: linear-gradient(120deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.9;
}
.hero-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 32px; }
.hero-search {
  max-width: 560px;
  margin: 0 auto 40px;
  background: #fff;
  border-radius: 999px;
  padding: 6px;
  display: flex;
  align-items: center;
  box-shadow: 0 8px 30px rgba(15,23,42,.08);
  border: 1px solid var(--border);
}
.hero-search input {
  flex: 1;
  border: none;
  outline: none;
  padding: 10px 20px;
  font-size: 15px;
  background: transparent;
  color: var(--text);
  min-width: 0;
}
.hero-search input::placeholder { color: #94a3b8; }
.hero-search button {
  background: var(--primary);
  border: none;
  color: #fff;
  border-radius: 999px;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s ease;
  white-space: nowrap;
}
.hero-search button:hover { background: var(--primary-dark); }
.hero-stats { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.stat-item { text-align: center; }
.stat-item .num { font-size: 32px; font-weight: 800; color: var(--text); line-height: 1.2; }
.stat-item .num em { font-style: normal; color: var(--primary); }
.stat-item .label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ===== Section 标题 ===== */
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; color: var(--text); margin-bottom: 12px; letter-spacing: -.5px; }
.section-head p { font-size: 15px; color: var(--text-muted); line-height: 1.8; }
.section-head.left { text-align: left; margin-left: 0; }

/* ===== 信任条 ===== */
.trust-section { background: #fff; padding: 40px 0; border-bottom: 1px solid var(--border); }
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.trust-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  border-radius: var(--radius-md);
  transition: all .22s ease;
}
.trust-item:hover { background: var(--bg); transform: translateY(-2px); }
.trust-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.trust-icon.i1 { background: var(--primary-light); color: var(--primary); }
.trust-icon.i2 { background: var(--accent-light); color: var(--accent); }
.trust-icon.i3 { background: #ecfdf5; color: #059669; }
.trust-item h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.trust-item p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin: 0; }

/* ===== 分类入口 ===== */
.category-section { background: var(--bg); }
.category-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 340px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-card);
  transition: all .3s ease;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.category-card .cat-bg { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform .4s ease; }
.category-card:hover .cat-bg { transform: scale(1.05); }
.category-card .cat-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,23,42,.1) 0%, rgba(15,23,42,.75) 90%);
}
.category-card .cat-body {
  position: relative;
  z-index: 2;
  padding: 32px;
  color: #fff;
  width: 100%;
}
.category-card .cat-body .cat-tag {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(255,255,255,.16);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 14px;
}
.category-card h3 { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.category-card p { font-size: 14px; opacity: .9; line-height: 1.7; margin-bottom: 18px; }
.category-card .cat-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.3);
  padding: 9px 22px;
  border-radius: 999px;
  transition: all .22s ease;
}
.category-card:hover .cat-link { background: var(--accent); border-color: var(--accent); }

/* ===== 最新资讯 ===== */
.news-section { background: #fff; }
.news-layout { display: grid; grid-template-columns: 1fr 340px; gap: 36px; }
.news-list { display: flex; flex-direction: column; gap: 12px; }
.news-item {
  display: grid;
  grid-template-columns: 220px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--bg);
  border: 1px solid transparent;
  transition: all .25s ease;
}
.news-item:hover { background: #fff; border-color: var(--border); box-shadow: var(--shadow-card); transform: translateY(-2px); }
.news-cover { width: 220px; height: 130px; border-radius: 12px; object-fit: cover; }
.news-info { overflow: hidden; }
.news-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.news-cat {
  display: inline-block;
  padding: 3px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.news-date { font-size: 13px; color: var(--text-muted); }
.news-title { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 6px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.news-item:hover .news-title { color: var(--primary); }
.news-desc { font-size: 14px; color: var(--text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-arrow { color: var(--border); font-size: 18px; transition: all .22s ease; }
.news-item:hover .news-arrow { color: var(--primary); transform: translateX(4px); }
.empty-tip { padding: 40px; text-align: center; background: var(--bg); border-radius: var(--radius-md); color: var(--text-muted); font-size: 15px; }

.news-aside { display: flex; flex-direction: column; gap: 24px; }
.side-card { background: var(--bg); border-radius: var(--radius-md); padding: 24px; }
.side-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.side-card h4 i { color: var(--primary); }
.guide-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.guide-list li a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #334155;
  padding: 8px 10px;
  border-radius: 10px;
  transition: all .2s ease;
}
.guide-list li a i { color: var(--accent); font-size: 12px; }
.guide-list li a:hover { background: #fff; color: var(--primary); box-shadow: 0 2px 10px rgba(15,23,42,.04); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { padding: 5px 14px; background: #fff; border: 1px solid var(--border); border-radius: 999px; font-size: 13px; color: var(--text-muted); cursor: pointer; transition: all .2s ease; }
.tag:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }

/* ===== 流程步骤 ===== */
.steps-section { background: var(--bg); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-card);
  transition: all .3s ease;
  border: 1px solid var(--border);
}
.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  position: relative;
  z-index: 2;
}
.step-card::after {
  content: '';
  position: absolute;
  top: 44px;
  right: -24px;
  width: 48px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--border) 0 6px, transparent 6px 12px);
  z-index: 1;
}
.step-card:last-child::after { display: none; }
.step-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin: 0; }

/* ===== 功能亮点 ===== */
.features-section { background: #fff; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  border: 1px solid var(--border);
  transition: all .28s ease;
}
.feature-card:hover { background: #fff; transform: translateY(-4px); box-shadow: var(--shadow-card); border-color: transparent; }
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
  margin-bottom: 18px;
  box-shadow: 0 4px 14px rgba(15,23,42,.06);
}
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin: 0; }

/* ===== 数据统计 ===== */
.stats-section {
  background: linear-gradient(135deg, rgba(30,27,75,.92), rgba(79,70,229,.86)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 80px 0;
  color: #fff;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stats-grid .num { font-size: 42px; font-weight: 900; line-height: 1.2; letter-spacing: -1px; }
.stats-grid .num span { font-size: 20px; }
.stats-grid .label { font-size: 14px; opacity: .75; margin-top: 6px; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg); }
.custom-accordion .accordion-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(15,23,42,.03);
}
.custom-accordion .accordion-item:last-child { margin-bottom: 0; }
.custom-accordion .accordion-button {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: #fff;
  padding: 20px 24px;
  box-shadow: none;
  border: none;
  transition: color .2s ease;
}
.custom-accordion .accordion-button:hover { color: var(--primary); }
.custom-accordion .accordion-button:not(.collapsed) { color: var(--primary); background: #fff; box-shadow: none; }
.custom-accordion .accordion-button::after { background-size: 14px; }
.custom-accordion .accordion-body { padding: 0 24px 22px; color: var(--text-muted); font-size: 14px; line-height: 1.8; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(120deg, var(--primary-dark), var(--primary));
  padding: 72px 0;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,.06);
  border-radius: 50%;
  top: -200px;
  right: -120px;
}
.cta-section::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: rgba(255,255,255,.04);
  border-radius: 50%;
  bottom: -150px;
  left: -80px;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 900; margin-bottom: 16px; letter-spacing: -1px; }
.cta-section p { font-size: 16px; opacity: .85; max-width: 560px; margin: 0 auto 32px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.site-btn-white { background: #fff; color: var(--primary); }
.site-btn-white:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
.site-btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
.site-btn-ghost:hover { background: rgba(255,255,255,.2); border-color: #fff; }

/* ===== 页脚 ===== */
.site-footer { background: #0f172a; color: #94a3b8; padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
.footer-brand .brand { color: #fff; margin-bottom: 16px; }
.footer-desc { font-size: 14px; line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94a3b8;
  font-size: 15px;
  transition: all .22s ease;
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-links { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: #94a3b8; transition: all .2s ease; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.footer-contact div { display: flex; align-items: center; gap: 10px; }
.footer-contact i { color: var(--primary); width: 18px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-top: 24px; text-align: center; font-size: 13px; color: #64748b; }
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: #fff; }

/* ===== 移动端 ===== */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: block;
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    z-index: 999;
    padding: 24px;
    overflow-y: auto;
    border-top: 1px solid var(--border);
  }
  .main-nav.open .nav-list { flex-direction: column; gap: 8px; }
  .main-nav.open .nav-link { width: 100%; padding: 14px 18px; justify-content: space-between; }
  .main-nav.open .has-mega .mega-panel {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    min-width: 0;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--primary-light);
    padding: 12px 16px;
    margin: 6px 0 0 16px;
    display: block;
  }
  .nav-toggle { display: inline-flex; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .step-card::after { display: none; }
  .news-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .trust-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .category-card { min-height: 260px; }
  .news-item { grid-template-columns: 120px 1fr; }
  .news-cover { width: 120px; height: 90px; }
  .news-arrow { display: none; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-search { flex-direction: column; border-radius: 20px; padding: 12px; }
  .hero-search input { width: 100%; text-align: center; padding: 8px 10px; }
  .hero-search button { width: 100%; margin-top: 6px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .stats-grid .num { font-size: 32px; }
}
@media (max-width: 520px) {
  :root { --space-section: 64px; }
  .brand { font-size: 15px; }
  .brand-mark { width: 34px; height: 34px; font-size: 16px; }
  .nav-inner { height: 66px; }
  .main-nav.open { top: 66px; }
  .hero { padding: 80px 0 64px; }
  .hero-stats { gap: 24px; }
  .stat-item .num { font-size: 24px; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; }
  .news-cover { width: 100%; height: 150px; }
  .news-arrow { display: none; }
  .category-card { min-height: 230px; }
  .section-head { margin-bottom: 32px; }
}

/* roulang page: category1 */
:root {
  --primary: #5b3df5;
  --primary-dark: #4529d6;
  --primary-light: #eeeaff;
  --accent: #00c2a8;
  --accent-soft: #e0faf6;
  --dark: #12122e;
  --gray-800: #2a2a45;
  --gray-600: #5f5f7e;
  --gray-400: #9a9ab5;
  --light-bg: #f6f7fc;
  --white: #ffffff;
  --border: #e6e8f2;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(18,18,46,.05);
  --shadow-md: 0 8px 30px rgba(91,61,245,.08);
  --shadow-lg: 0 16px 48px rgba(91,61,245,.12);
  --spacing-section: 96px;
  --font-base: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-base);
  color:var(--gray-800);
  background:var(--white);
  line-height:1.7;
  font-size:16px;
}
img{max-width:100%;display:block}
a{text-decoration:none;transition:all .25s ease}
ul,ol{list-style:none}
.container{max-width:1200px;padding:0 24px}
/* ヘッダー */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--dark)}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;box-shadow:0 4px 12px rgba(91,61,245,.28);
  letter-spacing:-.5px;
}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-list{display:flex;align-items:center;gap:6px;margin:0;padding:0}
.nav-link{
  display:flex;align-items:center;gap:6px;
  padding:9px 16px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--gray-600);
}
.nav-link i{margin-right:2px;opacity:.75}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-link.active{color:var(--primary-dark);background:var(--primary-light);font-weight:600}
.has-mega{position:relative}
.mega-panel{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(8px);
  width:560px;background:#fff;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);border:1px solid var(--border);
  padding:22px;display:flex;gap:28px;opacity:0;visibility:hidden;
  transition:all .28s ease;pointer-events:none;
}
.has-mega::before{
  content:"";position:absolute;width:100%;height:20px;top:100%;left:0;
}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{
  opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto;
}
.mega-col{flex:1}
.mega-title{
  font-size:15px;font-weight:700;color:var(--dark);
  margin-bottom:14px;padding-bottom:8px;border-bottom:1px dashed var(--border);
}
.mega-title i{color:var(--primary);margin-right:5px}
.mega-item{
  display:flex;align-items:center;gap:7px;padding:7px 0;
  font-size:13px;color:var(--gray-600);border-radius:6px;
}
.mega-item i{width:18px;text-align:center;color:var(--primary);font-size:12px}
.mega-item:hover{color:var(--primary-dark);padding-left:5px}
.header-cta{
  display:inline-flex;align-items:center;gap:7px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;padding:9px 20px;border-radius:10px;
  font-size:14px;font-weight:600;box-shadow:0 4px 14px rgba(91,61,245,.3);
  transition:all .25s ease;border:none;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(91,61,245,.34);color:#fff}
.nav-toggle{display:none}
/* バナー */
.page-banner{
  position:relative;padding:110px 0 90px;color:#fff;
  background:linear-gradient(135deg,#131338 0%,#241d5c 55%,#3c2e94 100%);
  overflow:hidden;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.28;transform:scale(1.05);
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(19,19,56,.94) 20%,rgba(60,46,148,.68) 100%);
}
.banner-content{position:relative;z-index:2;max-width:760px}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(6px);color:#fff;border-radius:999px;
  padding:6px 16px;font-size:13px;font-weight:500;margin-bottom:24px;
}
.banner-tag i{color:var(--accent)}
.page-banner h1{font-size:44px;font-weight:800;line-height:1.25;letter-spacing:.5px;margin-bottom:20px}
.page-banner h1 span{color:var(--accent);position:relative}
.page-banner p{font-size:17px;color:rgba(255,255,255,.86);margin-bottom:32px;max-width:600px;line-height:1.8}
.banner-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-light-custom{
  background:#fff;color:var(--primary-dark);padding:12px 28px;border-radius:12px;
  font-weight:600;font-size:15px;box-shadow:0 6px 20px rgba(0,0,0,.15);border:none;
  display:inline-flex;align-items:center;gap:8px;transition:all .25s ease;
}
.btn-light-custom:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,.2);color:var(--primary-dark)}
.btn-outline-custom{
  background:rgba(255,255,255,.1);color:#fff;padding:12px 28px;border-radius:12px;
  font-weight:500;font-size:15px;border:1px solid rgba(255,255,255,.28);
  display:inline-flex;align-items:center;gap:8px;transition:all .25s ease;backdrop-filter:blur(4px);
}
.btn-outline-custom:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.45);color:#fff}
/* セクション基本 */
.section{padding:var(--spacing-section) 0}
.section-head{max-width:680px;margin:0 auto 56px;text-align:center}
.section-sub{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--accent-soft);color:#028977;
  padding:5px 15px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:18px;
}
.section-head h2{font-size:34px;font-weight:800;color:var(--dark);letter-spacing:.5px;margin-bottom:14px}
.section-head p{color:var(--gray-600);font-size:16.5px;line-height:1.8}
/* 紹介ブロック */
.intro-block{padding:60px 0;background:var(--light-bg)}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.intro-copy h3{font-size:28px;font-weight:700;color:var(--dark);margin-bottom:16px}
.intro-copy h3 i{color:var(--primary);margin-right:8px}
.intro-copy p{color:var(--gray-600);line-height:1.9;margin-bottom:16px;font-size:15.5px}
.intro-features{display:grid;gap:12px;margin-top:24px}
.intro-feature{display:flex;gap:12px;align-items:flex-start;padding:14px 18px;background:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--border)}
.intro-feature i{color:var(--primary);font-size:18px;margin-top:3px;min-width:22px}
.intro-feature strong{display:block;font-size:15px;color:var(--dark);margin-bottom:2px}
.intro-feature span{font-size:13.5px;color:var(--gray-600)}
.intro-media{position:relative}
.intro-media picture{display:block;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.intro-media img{width:100%;height:380px;object-fit:cover}
.media-badge{
  position:absolute;bottom:24px;left:24px;background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);border-radius:var(--radius-md);padding:12px 20px;
  box-shadow:0 8px 24px rgba(0,0,0,.15);display:flex;gap:12px;align-items:center;
}
.media-badge-value{font-size:24px;font-weight:800;color:var(--primary)}
.media-badge-label{font-size:12.5px;color:var(--gray-600);line-height:1.4;text-align:left}
/* ステップ */
.steps-section{background:#fff}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-bottom:40px}
.step-card{
  position:relative;background:var(--light-bg);border-radius:var(--radius-lg);
  padding:30px 22px;border:1px solid var(--border);transition:all .3s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent;background:#fff}
.step-num{
  width:46px;height:46px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;font-size:19px;font-weight:800;display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;box-shadow:0 4px 12px rgba(91,61,245,.22);
}
.step-card h4{font-size:17px;font-weight:700;color:var(--dark);margin-bottom:10px}
.step-card p{font-size:13.5px;color:var(--gray-600);line-height:1.8}
.step-card .step-corner{position:absolute;top:14px;right:16px;font-size:12px;color:var(--gray-400);font-weight:600}
/* チュートリアルカード */
.tutorials-section{background:var(--light-bg)}
.tutorial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.tutorial-card{
  background:#fff;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--border);transition:all .3s ease;
}
.tutorial-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.tutorial-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--primary-light)}
.tutorial-media img{width:100%;height:100%;object-fit:cover}
.tutorial-body{padding:24px}
.tutorial-meta{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.tutorial-tag{background:var(--primary-light);color:var(--primary-dark);font-size:12px;font-weight:700;padding:4px 12px;border-radius:99px}
.tutorial-date{font-size:12px;color:var(--gray-400)}
.tutorial-body h3{font-size:17px;font-weight:700;color:var(--dark);margin-bottom:8px;line-height:1.5}
.tutorial-body p{font-size:13.5px;color:var(--gray-600);line-height:1.8;margin-bottom:16px}
.tutorial-link{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--primary)}
.tutorial-link:hover{color:var(--primary-dark);gap:9px}
/* FAQ */
.faq-section{background:#fff}
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  border:1px solid var(--border);border-radius:var(--radius-md);
  margin-bottom:14px;background:#fff;overflow:hidden;transition:box-shadow .25s ease;
}
.faq-item:hover{box-shadow:var(--shadow-sm)}
.faq-question{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;cursor:pointer;font-size:15.5px;font-weight:600;color:var(--dark);
  background:var(--light-bg);
}
.faq-question i{color:var(--primary);font-size:16px;flex-shrink:0}
.faq-answer{padding:0 26px;font-size:14.5px;color:var(--g-600);max-height:0;overflow:hidden;transition:all .35s ease;color:var(--gray-600);line-height:1.9}
.faq-item.open .faq-answer{padding:0 26px 20px;max-height:200px}
.faq-item.open .faq-question{background:#fff}
/* CTA */
.cta-section{padding:80px 0;position:relative;background:linear-gradient(135deg,#131338,#3c2e94);overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.16}
.cta-inner{position:relative;z-index:2;text-align:center;color:#fff;max-width:680px;margin:0 auto}
.cta-inner h2{font-size:32px;font-weight:800;margin-bottom:16px}
.cta-inner p{font-size:16px;color:rgba(255,255,255,.82);margin-bottom:30px;line-height:1.8}
.cta-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.cta-primary{background:var(--accent);color:#073f36;padding:14px 34px;border-radius:12px;font-weight:700;font-size:15px;border:none;box-shadow:0 6px 22px rgba(0,194,168,.4);transition:all .25s ease}
.cta-primary:hover{transform:translateY(-3px);background:#00d8bb;color:#073f36}
.cta-outline{border:1.5px solid rgba(255,255,255,.4);color:#fff;padding:14px 30px;border-radius:12px;font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:8px;transition:all .25s ease}
.cta-outline:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7);color:#fff}
/* フッター */
.site-footer{background:var(--dark);color:#c9c9dd;padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:50px;padding-bottom:46px}
.footer-brand .brand{color:#fff;font-size:17px}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--primary),var(--accent))}
.footer-desc{font-size:13.5px;line-height:1.9;margin:16px 0 22px;color:#a0a0c6;max-width:300px}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:38px;height:38px;border-radius:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:center;color:#c6c6e2;
  transition:all .25s ease;
}
.footer-social a:hover{background:var(--primary);border-color:var(--primary);color:#fff;transform:translateY(-3px)}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:13.5px;color:#a0a0c6;display:inline-flex;align-items:center;gap:6px}
.footer-links a i{font-size:10px}
.footer-links a:hover{color:var(--accent)}
.footer-contact div{font-size:13.5px;margin-bottom:10px;color:#a0a0c6;display:flex;align-items:center;gap:9px}
.footer-contact i{color:var(--accent);font-size:14px;width:16px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:22px 0;
  font-size:12.5px;text-align:center;color:#7b7b9c;
}
/* レスポンシブ */
@media(max-width:1024px){
  :root{--spacing-section:70px}
  .intro-grid{gap:40px}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .tutorial-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media(max-width:768px){
  .nav-toggle{
    display:flex;width:42px;height:42px;border-radius:10px;
    border:1px solid var(--border);background:#fff;
    align-items:center;justify-content:center;font-size:18px;color:var(--dark);
    cursor:pointer;
  }
  .main-nav{
    position:absolute;top:76px;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;padding:18px 22px 24px;
    border-bottom:1px solid var(--border);box-shadow:0 16px 36px rgba(0,0,0,.1);
    display:none;
  }
  .main-nav.open{display:flex;max-height:calc(100vh - 80px);overflow-y:auto}
  .nav-list{flex-direction:column;width:100%}
  .nav-list li{width:100%}
  .nav-link{width:100%;justify-content:space-between;padding:12px 14px;border-radius:10px}
  .has-mega::before{display:none}
  .mega-panel{
    position:static;width:100%;transform:none;opacity:1;visibility:visible;
    box-shadow:none;padding:10px 0 4px 16px;display:flex;flex-direction:column;
    gap:14px;pointer-events:auto;border:none;border-left:2px solid var(--primary-light);
  }
  .mega-item{padding:6px 0}
  .header-cta{display:none}
  .page-banner{padding:76px 0 60px}
  .page-banner h1{font-size:30px}
  .page-banner p{font-size:15.5px}
  .section-head h2{font-size:26px}
  .intro-grid{grid-template-columns:1fr}
  .tutorial-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .steps-grid{grid-template-columns:1fr}
  .footer-bottom{text-align:center}
}
@media(max-width:520px){
  .container{padding:0 18px}
  .page-banner h1{font-size:26px}
  .banner-actions{flex-direction:column}
  .btn-light-custom,.btn-outline-custom{justify-content:center}
  .section-head{margin-bottom:36px}
  .tutorial-body{padding:20px}
}

/* roulang page: article */
:root {
            --primary: #4F46E5;
            --primary-dark: #3730A3;
            --primary-light: #EEF2FF;
            --accent: #FF6B35;
            --accent-light: #FFF3ED;
            --bg-body: #F6F8FC;
            --bg-white: #FFFFFF;
            --text-dark: #0F172A;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border-color: #E2E8F0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 32px rgba(15, 23, 42, 0.12);
            --spacing-section: 72px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-dark);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
        }

        button, input, select, textarea {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            box-shadow: 0 1px 12px rgba(15, 23, 42, 0.04);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, #7C3AED 100%);
            color: #fff;
            border-radius: 12px;
            font-size: 1.2rem;
            font-weight: 900;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
        }

        .main-nav {
            display: flex;
            align-items: center;
            flex: 1;
            justify-content: center;
        }

        .nav-list {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
        }

        .nav-list > li {
            position: relative;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-dark);
            border-radius: 10px;
            transition: all 0.25s ease;
        }

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

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link i.fa-chevron-down {
            font-size: 0.7rem;
            opacity: 0.6;
            margin-left: 2px;
        }

        .has-mega:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0) translateX(-30%);
            pointer-events: auto;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 10px);
            left: 50%;
            transform: translateY(8px) translateX(-30%);
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-hover);
            padding: 18px 20px;
            display: flex;
            gap: 26px;
            min-width: 440px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all 0.3s ease;
            z-index: 1100;
        }

        .mega-col {
            min-width: 180px;
        }

        .mega-title {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
            padding-bottom: 6px;
            border-bottom: 1px solid var(--border-color);
        }

        .mega-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--text-dark);
            transition: color 0.2s ease;
        }

        .mega-item i {
            color: var(--primary);
            width: 20px;
            text-align: center;
            font-size: 0.85rem;
        }

        .mega-item:hover {
            color: var(--primary);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
        }

        .nav-search {
            display: none;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: 24px;
            padding: 0 14px;
            height: 38px;
            width: 190px;
        }

        .nav-search input {
            border: none;
            background: transparent;
            font-size: 0.85rem;
            width: 100%;
        }

        .nav-search i {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-right: 6px;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 24px;
            padding: 8px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            font-size: 1.1rem;
            color: var(--text-dark);
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .article-hero {
            position: relative;
            background: linear-gradient(120deg, rgba(15, 23, 42, 0.88), rgba(79, 70, 229, 0.72)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            padding: 80px 0 64px;
            color: #fff;
            overflow: hidden;
        }

        .article-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-custom {
            display: inline-flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 30px;
            padding: 6px 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }

        .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.8);
            transition: color 0.2s;
        }
        .breadcrumb-custom a:hover {
            color: #fff;
        }
        .breadcrumb-custom .sep {
            opacity: 0.5;
            font-size: 0.75rem;
        }
        .breadcrumb-custom .current {
            color: #fff;
            font-weight: 600;
            max-width: 220px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .hero-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: #fff;
            border-radius: 24px;
            padding: 4px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 14px;
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
        }

        .article-hero h1 {
            font-size: clamp(1.6rem, 3.4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 18px;
            max-width: 860px;
            letter-spacing: -0.01em;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.85);
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-meta i {
            font-size: 0.85rem;
            opacity: 0.8;
        }

        .article-main {
            padding: 56px 0 var(--spacing-section);
        }

        .article-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            padding: 32px;
            margin-bottom: 24px;
        }

        .article-content {
            font-size: 1rem;
            line-height: 1.9;
            color: #334155;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dark);
            margin: 2.2rem 0 1rem;
            position: relative;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
            border-radius: 0 6px 6px 0;
        }

        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin: 1.8rem 0 0.9rem;
        }

        .article-content p {
            margin-bottom: 1.2rem;
        }

        .article-content ul, .article-content ol {
            margin: 0 0 1.2rem 1.4rem;
            padding: 0;
        }
        .article-content li {
            margin-bottom: 0.4rem;
        }

        .article-content blockquote {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            border-radius: 0 12px 12px 0;
            padding: 18px 24px;
            margin: 1.6rem 0;
            color: var(--text-dark);
            font-style: normal;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.4rem 0;
        }

        .article-content a {
            color: var(--primary);
            font-weight: 600;
            border-bottom: 1px dashed var(--primary);
        }

        .article-content a:hover {
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .article-divider {
            border: none;
            border-top: 1px solid var(--border-color);
            margin: 28px 0;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 24px;
        }

        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            padding: 4px 14px;
            font-size: 0.82rem;
            font-weight: 600;
            transition: all 0.25s;
        }
        .tag-badge:hover {
            background: var(--primary);
            color: #fff;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .article-share .share-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 600;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid var(--border-color);
            background: #fff;
            color: var(--text-muted);
            transition: all 0.25s;
        }
        .share-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: transparent;
            transform: translateY(-2px);
        }

        .article-empty {
            text-align: center;
            padding: 60px 0;
        }
        .article-empty .empty-icon {
            font-size: 3rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .article-empty h2 {
            font-size: 1.5rem;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .article-empty p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .sidebar-widget {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            margin-bottom: 24px;
        }

        .widget-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .widget-title i {
            color: var(--primary);
        }

        .widget-title:after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border-color);
            margin-left: 8px;
        }

        .sidebar-search .search-input {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 0 14px;
            height: 44px;
            transition: all 0.3s;
        }
        .sidebar-search .search-input:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }
        .sidebar-search .search-input i {
            color: var(--text-muted);
            margin-right: 8px;
        }
        .sidebar-search .search-input input {
            border: none;
            background: transparent;
            flex: 1;
            font-size: 0.9rem;
        }

        .latest-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .latest-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
            transition: all 0.2s;
        }
        .latest-list li:last-child {
            border-bottom: none;
        }
        .latest-list a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-dark);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        .latest-list a:hover {
            color: var(--primary);
        }
        .latest-list .list-num {
            color: var(--text-light);
            font-size: 0.8rem;
            font-weight: 600;
            flex-shrink: 0;
        }
        .latest-list .list-time {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-top: 2px;
        }

        .sidebar-cats {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .sidebar-cats li {
            margin-bottom: 8px;
        }
        .sidebar-cats a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: 10px;
            background: var(--bg-body);
            color: var(--text-dark);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s;
            border: 1px solid transparent;
        }
        .sidebar-cats a:hover,
        .sidebar-cats a.active {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(79, 70, 229, 0.15);
        }
        .sidebar-cats a i {
            color: var(--primary);
            font-size: 0.85rem;
            width: 18px;
        }
        .sidebar-cats .count {
            margin-left: auto;
            background: #fff;
            border-radius: 10px;
            padding: 0 8px;
            font-size: 0.75rem;
            font-weight: 600;
            border: 1px solid var(--border-color);
        }

        .widget-cta {
            background: linear-gradient(135deg, var(--primary) 0%, #7C3AED 100%);
            border-radius: var(--radius-lg);
            padding: 28px;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .widget-cta::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 100px;
            height: 100px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }
        .widget-cta h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .widget-cta p {
            font-size: 0.85rem;
            opacity: 0.85;
            margin-bottom: 18px;
        }
        .widget-cta .btn-white {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: 24px;
            padding: 8px 22px;
            font-weight: 700;
            transition: all 0.3s;
        }
        .widget-cta .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        .related-section {
            background: var(--bg-white);
            padding: var(--spacing-section) 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .section-head .title-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .section-head .title-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 14px;
            font-size: 1.2rem;
        }
        .section-head h2 {
            font-size: clamp(1.4rem, 2.5vw, 1.8rem);
            font-weight: 800;
            color: var(--text-dark);
            margin: 0;
            letter-spacing: -0.01em;
        }
        .section-head .sub-text {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 4px;
        }
        .section-head .more-link {
            color: var(--primary);
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.25s;
        }
        .section-head .more-link:hover {
            gap: 10px;
        }

        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.35s ease;
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            position: relative;
            overflow: hidden;
            height: 180px;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(transparent 55%, rgba(15, 23, 42, 0.4));
        }
        .related-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            border-radius: 16px;
            padding: 3px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .related-card .card-body-custom {
            padding: 20px;
        }
        .related-card h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 48px;
        }
        .related-card h5 a:hover {
            color: var(--primary);
        }
        .related-card .card-meta {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .faq-section {
            padding: var(--spacing-section) 0;
        }

        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all 0.3s;
        }
        .faq-item:hover {
            border-color: rgba(79, 70, 229, 0.3);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
        }
        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        .cta-section {
            position: relative;
            background: linear-gradient(120deg, rgba(15, 23, 42, 0.9), rgba(79, 70, 229, 0.8)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 72px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1rem;
            opacity: 0.85;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-cta-light {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: 30px;
            padding: 12px 30px;
            font-size: 1rem;
            font-weight: 700;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-cta-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            color: var(--primary-dark);
            background: #f0f0ff;
        }
        .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            border-radius: 30px;
            padding: 10px 28px;
            font-size: 1rem;
            font-weight: 600;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transform: translateY(-2px);
        }

        .site-footer {
            background: #0F172A;
            color: rgba(255, 255, 255, 0.7);
            padding-top: 56px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .brand {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .brand .brand-mark {
            background: linear-gradient(135deg, #6366F1, #8B5CF6);
        }
        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin: 14px 0 20px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            transition: all 0.25s;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--primary);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: all 0.2s;
            display: inline-block;
        }
        .footer-links a:hover {
            color: #fff;
            transform: translateX(4px);
        }
        .footer-contact div {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
        }
        .footer-contact i {
            color: var(--primary-light);
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.82rem;
        }

        @media (max-width: 991.98px) {
            .nav-inner {
                height: 64px;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 30px rgba(15, 23, 42, 0.1);
                padding: 16px 20px;
                display: none;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
                justify-content: flex-start;
                align-items: stretch;
                flex-direction: column;
            }
            .site-header.nav-open .main-nav {
                display: block;
            }
            .nav-list {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-list > li {
                width: 100%;
            }
            .nav-link {
                width: 100%;
            }
            .mega-panel {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                border: none;
                border-left: 2px solid var(--primary-light);
                border-radius: 0;
                padding: 0 0 0 16px;
                min-width: 0;
                display: none;
                margin: 4px 0 8px;
            }
            .has-mega.open-mobile .mega-panel {
                display: flex;
                flex-wrap: wrap;
                gap: 12px;
            }
            .mega-col {
                min-width: 0;
                width: 100%;
            }
            .nav-actions {
                display: none;
            }
            .nav-search {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .brand {
                font-size: 1rem;
            }
            .brand-mark {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
        }

        @media (max-width: 767.98px) {
            .article-hero {
                padding: 48px 0 40px;
            }
            .breadcrumb-custom {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .article-card {
                padding: 20px;
            }
            .related-card .card-img {
                height: 160px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .nav-search {
                display: none;
            }
            .nav-inner {
                gap: 8px;
            }
            .brand span:last-child {
                display: inline-block;
                max-width: 180px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
            .article-hero h1 {
                font-size: 1.3rem;
            }
            .hero-meta {
                gap: 10px;
                font-size: 0.8rem;
                flex-direction: column;
                align-items: flex-start;
            }
            .article-card {
                padding: 16px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #4F46E5;
  --primary-dark: #4338CA;
  --primary-light: #EEF2FF;
  --accent: #06B6D4;
  --accent-light: #CFFAFE;
  --bg: #F6F7FB;
  --bg-white: #FFFFFF;
  --bg-dark: #0F172A;
  --text: #1E293B;
  --text-muted: #64748B;
  --border: #E6EAF2;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 3px rgba(15,23,42,0.08);
  --shadow: 0 10px 30px rgba(15,23,42,0.08);
  --shadow-lg: 0 20px 60px rgba(79,70,229,0.13);
  --tr: all .25s ease;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; height: auto; }
.container { max-width: 1200px; }

/* ===== Header ===== */
.site-header {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 999;
}
.site-header.sticky { box-shadow: 0 4px 20px rgba(15,23,42,0.06); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.22rem; color: var(--text); text-decoration: none; white-space: nowrap; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 13px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 1.15rem; font-weight: 900;
  box-shadow: 0 6px 16px rgba(79,70,229,.32);
  flex-shrink: 0;
}
.main-nav { display: flex; align-items: center; }
.nav-list { display: flex; list-style: none; margin: 0; padding: 0; gap: 4px; }
.nav-list > li { position: relative; }
.nav-link {
  display: flex; align-items: center; gap: 6px;
  padding: 9px 16px; border-radius: 10px;
  text-decoration: none; color: var(--text-muted);
  font-weight: 600; font-size: .95rem;
  transition: var(--tr);
  background: transparent; border: none; cursor: pointer;
}
.nav-link i { font-size: .85rem; }
.nav-link:hover, .nav-link.active { background: var(--primary-light); color: var(--primary); }
.nav-extra { display: flex; align-items: center; gap: 10px; }
.nav-extra .btn { color: #fff; }
.nav-toggle {
  display: none;
  width: 42px; height: 42px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg-white); color: var(--text);
  align-items: center; justify-content: center; font-size: 1.1rem; cursor: pointer;
  transition: var(--tr);
}
.nav-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* Mega menu */
.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.mega-panel {
  position: absolute; top: calc(100% + 12px); left: 50%;
  background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 22px 24px;
  display: flex; gap: 32px; min-width: 500px;
  opacity: 0; visibility: hidden;
  transform: translateX(-50%) translateY(10px);
  transition: var(--tr);
  border: 1px solid var(--border);
}
.mega-panel::before {
  content: ''; position: absolute; top: -8px; left: 50%; transform: translateX(-50%);
  width: 16px; height: 16px; background: #fff; border-left: 1px solid var(--border); border-top: 1px solid var(--border);
  border-radius: 3px;
}
.mega-col { flex: 1; min-width: 0; }
.mega-title {
  display: flex; align-items: center; gap: 8px;
  font-size: .88rem; font-weight: 700; color: var(--primary);
  margin-bottom: 12px; letter-spacing: .02em;
}
.mega-item {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 10px; border-radius: 8px;
  color: var(--text-muted); text-decoration: none;
  font-size: .9rem; transition: var(--tr);
}
.mega-item i { width: 18px; text-align: center; color: var(--primary); opacity: .7; transition: var(--tr); }
.mega-item:hover { background: var(--primary-light); color: var(--primary); }
.mega-item:hover i { opacity: 1; transform: scale(1.1); }

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 60%, #312E81 100%);
  padding: 120px 0 90px;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.page-banner::after {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: .32;
}
.banner-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.28);
  padding: 6px 18px; border-radius: 40px;
  font-size: .85rem; font-weight: 600;
  margin-bottom: 18px;
  backdrop-filter: blur(6px);
}
.banner-badge i { color: #7DD3FC; }
.banner-title { font-size: 2.6rem; font-weight: 800; line-height: 1.2; margin-bottom: 14px; letter-spacing: -.02em; }
.banner-subtitle { font-size: 1.06rem; color: rgba(255,255,255,.85); max-width: 640px; margin-bottom: 24px; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: .9rem; color: rgba(255,255,255,.7);
  margin: 0; padding: 0;
}
.breadcrumb a { color: rgba(255,255,255,.9); text-decoration: none; transition: var(--tr); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { font-size: .7rem; color: rgba(255,255,255,.5); }

/* ===== Section ===== */
.section { padding: 90px 0; }
.section-head { text-align: center; margin-bottom: 50px; max-width: 680px; margin-left: auto; margin-right: auto; }
.section-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary-light); color: var(--primary);
  padding: 6px 16px; border-radius: 30px;
  font-size: .82rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title { font-size: 2rem; font-weight: 800; color: var(--text); line-height: 1.28; margin-bottom: 12px; letter-spacing: -.01em; }
.section-desc { color: var(--text-muted); font-size: 1rem; }

/* ===== Security Cards ===== */
.security-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 30px 26px;
  border: 1px solid var(--border);
  height: 100%;
  transition: var(--tr);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.security-card::before {
  content: '';
  position: absolute; top: 0; left: 0; width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0; transition: var(--tr);
}
.security-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.security-card:hover::before { opacity: 1; }
.card-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; font-size: 1.25rem; color: var(--primary);
}
.security-card h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 10px; }
.security-card p { font-size: .92rem; color: var(--text-muted); margin: 0; }

/* ===== Article Cards ===== */
.article-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  height: 100%;
  display: flex; flex-direction: column;
  transition: var(--tr);
  text-decoration: none; color: inherit;
}
.article-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.article-thumb { position: relative; overflow: hidden; aspect-ratio: 16/10; }
.article-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.article-card:hover .article-thumb img { transform: scale(1.06); }
.article-tag {
  position: absolute; left: 14px; top: 14px;
  background: rgba(79,70,229,.9); color: #fff;
  font-size: .75rem; font-weight: 700;
  padding: 4px 12px; border-radius: 30px;
  backdrop-filter: blur(4px);
}
.article-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.article-body h3 { font-size: 1rem; font-weight: 700; margin: 0 0 8px; line-height: 1.45; }
.article-body p { font-size: .88rem; color: var(--text-muted); flex: 1; margin: 0 0 14px; }
.article-meta { display: flex; align-items: center; gap: 14px; font-size: .78rem; color: var(--text-muted); }
.article-meta i { color: var(--primary); }

/* ===== Stats ===== */
.stats-section { background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 100%); position: relative; overflow: hidden; }
.stats-section::before { content: ''; position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-3.png'); background-size: cover; background-position: center; opacity: .22; }
.stats-grid { position: relative; }
.stat-card { text-align: center; padding: 40px 20px; color: #fff; }
.stat-num { font-size: 2.4rem; font-weight: 800; line-height: 1.2; margin-bottom: 8px; letter-spacing: -.02em; }
.stat-num span { color: #93C5FD; }
.stat-label { font-size: .9rem; color: rgba(255,255,255,.78); }
.stat-icon { font-size: 1.3rem; color: #7DD3FC; margin-bottom: 10px; }

/* ===== Timeline ===== */
.timeline-step {
  position: relative;
  padding: 28px 26px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  height: 100%;
  transition: var(--tr);
  box-shadow: var(--shadow-sm);
}
.timeline-step:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.step-num {
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; font-weight: 800; font-size: 1.05rem;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px; box-shadow: 0 4px 14px rgba(79,70,229,.3);
}
.timeline-step h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.timeline-step p { font-size: .88rem; color: var(--text-muted); margin: 0; }

/* ===== Checklist ===== */
.check-item {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  margin-bottom: 14px;
  transition: var(--tr);
  box-shadow: var(--shadow-sm);
}
.check-item:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.check-icon { color: var(--accent); font-size: 1.2rem; margin-top: 2px; }
.check-item h4 { font-weight: 700; font-size: .97rem; margin: 0 0 4px; }
.check-item p { font-size: .88rem; color: var(--text-muted); margin: 0; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.accordion-item { border: 1px solid var(--border) !important; border-radius: var(--radius-sm) !important; margin-bottom: 14px; overflow: hidden; box-shadow: var(--shadow-sm); background: var(--bg-white); }
.accordion-button { font-weight: 700; font-size: .98rem; padding: 18px 22px; color: var(--text); background: var(--bg-white); }
.accordion-button:not(.collapsed) { background: var(--primary-light); color: var(--primary); box-shadow: none; }
.accordion-button:focus { box-shadow: none; border-color: var(--primary); }
.accordion-body { color: var(--text-muted); font-size: .92rem; line-height: 1.8; }

/* ===== CTA ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius);
  padding: 56px 60px;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-banner::before { content: ''; position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; opacity: .2; }
.cta-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-title { font-size: 1.5rem; font-weight: 800; margin-bottom: 6px; }
.cta-p { color: rgba(255,255,255,.9); margin: 0; }
.btn-light-custom {
  background: #fff; color: var(--primary);
  border: none; padding: 12px 30px; border-radius: 30px;
  font-weight: 700; font-size: .98rem;
  transition: var(--tr); text-decoration: none; display: inline-flex; align-items: center; gap: 8px;
}
.btn-light-custom:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.2); color: var(--primary-dark); }

/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: #94A3B8; padding: 70px 0 0; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.3fr; gap: 40px; padding-bottom: 50px; }
.footer-brand .brand { color: #fff; margin-bottom: 16px; display: inline-flex; }
.footer-brand .brand .brand-mark { background: linear-gradient(135deg, var(--primary), var(--accent)); }
.footer-desc { font-size: .92rem; line-height: 1.8; margin: 16px 0 20px; max-width: 340px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 10px;
  background: rgba(255,255,255,.07); color: #fff;
  transition: var(--tr); text-decoration: none; font-size: .95rem;
}
.footer-social a:hover { background: var(--primary); transform: translateY(-3px); }
.footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 20px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: #94A3B8; text-decoration: none; font-size: .9rem; transition: var(--tr); }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact div { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: .9rem; color: #94A3B8; }
.footer-contact i { color: var(--accent); width: 16px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); text-align: center; padding: 22px 16px; font-size: .84rem; color: #64748B; }

/* ===== Buttons ===== */
.btn-primary-custom {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border: none; color: #fff; padding: 12px 30px; border-radius: 30px;
  font-weight: 700; font-size: .98rem; transition: var(--tr);
  box-shadow: 0 6px 20px rgba(79,70,229,.25); cursor: pointer;
}
.btn-primary-custom:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(79,70,229,.35); color: #fff; }
.btn-primary-custom:focus, .btn-light-custom:focus, .nav-toggle:focus { outline: 3px solid rgba(79,70,229,.3); outline-offset: 2px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section { padding: 70px 0; }
  .page-banner { padding: 90px 0 70px; }
  .banner-title { font-size: 2.2rem; }
  .nav-extra .btn { display: none; }
  .mega-panel { min-width: 440px; }
}
@media (max-width: 991px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: 72px; right: -100%;
    width: 300px; max-width: 85vw;
    height: calc(100vh - 72px);
    background: #fff; box-shadow: -10px 0 40px rgba(15,23,42,.12);
    transition: right .3s ease; padding: 24px;
    border-radius: 0 0 0 var(--radius);
    overflow-y: auto; z-index: 1001;
  }
  .main-nav.open { right: 0; }
  .nav-list { flex-direction: column; gap: 8px; }
  .nav-list > li { width: 100%; }
  .nav-link { width: 100%; justify-content: space-between; }
  .mega-panel {
    position: static; opacity: 1; visibility: visible; transform: none !important;
    min-width: 0; box-shadow: none; padding: 0 0 0 12px;
    background: transparent; border: none; flex-direction: column; gap: 8px;
    display: none; margin-top: 4px;
  }
  .mega-panel::before { display: none; }
  .mega-title { margin-top: 8px; }
  .has-mega:hover .mega-panel { display: none; }
  .has-mega .mega-panel.active { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 767px) {
  .banner-title { font-size: 1.8rem; }
  .banner-subtitle { font-size: .95rem; }
  .section-title { font-size: 1.6rem; }
  .section { padding: 55px 0; }
  .page-banner { padding: 75px 0 55px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .cta-banner { padding: 34px 24px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .stats-grid { gap: 16px; }
  .stat-num { font-size: 1.8rem; }
}
@media (max-width: 520px) {
  .brand span:last-child { font-size: 1rem; }
  .brand-mark { width: 34px; height: 34px; font-size: 1rem; }
  .banner-title { font-size: 1.55rem; }
  .banner-subtitle { font-size: .88rem; }
  .nav-inner { min-height: 64px; }
  .security-card, .timeline-step { padding: 22px 18px; }
  .article-body { padding: 16px 14px; }
  .btn-primary-custom, .btn-light-custom { width: 100%; justify-content: center; }
}