/* roulang page: index */
:root {
  --color-bg: #F5F8FB;
  --color-surface: #FFFFFF;
  --color-sidebar-bg: #1F2A44;
  --color-primary: #2E6BE6;
  --color-primary-dark: #1D4FAD;
  --color-primary-soft: #E5EDFB;
  --color-accent: #12A594;
  --color-accent-soft: #DFF6F2;
  --color-warning: #F0A83A;
  --color-text-main: #202938;
  --color-text-body: #3D4758;
  --color-text-muted: #8A94A6;
  --color-border: #D9E1EC;
  --color-border-light: #E9EFF5;
  --color-footer-bg: #17202E;
  --shadow-card: 0 2px 8px rgba(31,42,68,0.06), 0 6px 24px rgba(31,42,68,0.05);
  --shadow-hover: 0 6px 16px rgba(31,42,68,0.10), 0 12px 32px rgba(31,42,68,0.08);
  --shadow-sidebar: 2px 0 12px rgba(31,42,68,0.08);
  --radius-s: 6px;
  --radius-m: 12px;
  --radius-l: 20px;
  --container-max: 1280px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.75;
  font-size: 15px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
button { font-family: inherit; }
ul, ol { list-style: none; }

/* Layout */
.layout { display: flex; min-height: 100vh; }
.main-content { flex: 1; margin-left: 240px; min-height: 100vh; display: flex; flex-direction: column; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 32px; width: 100%; }
.section { padding: 80px 0; }
.section__header { margin-bottom: 40px; }
.section__label { display: inline-block; font-size: 13px; font-weight: 600; color: var(--color-primary); background: var(--color-primary-soft); border-radius: 999px; padding: 4px 14px; margin-bottom: 12px; letter-spacing: 0.02em; }
.section__title { font-size: 28px; font-weight: 700; line-height: 1.35; letter-spacing: -0.01em; color: var(--color-text-main); }
.section__subtitle { font-size: 16px; color: var(--color-text-body); line-height: 1.7; margin-top: 10px; max-width: 720px; }
.section__more { font-size: 14px; color: var(--color-primary); font-weight: 500; white-space: nowrap; }
.section__more:hover { color: var(--color-primary-dark); }
.section__head-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; flex-wrap: wrap; }
.text-center { text-align: center; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 15px; font-weight: 500; border-radius: 8px; padding: 12px 28px; transition: all 0.25s ease; cursor: pointer; border: none; line-height: 1.4; }
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: 0 2px 8px rgba(46,107,230,0.28); }
.btn-primary:hover { background: var(--color-primary-dark); box-shadow: var(--shadow-hover); transform: translateY(-1px); }
.btn-primary:active { transform: scale(0.98); }
.btn-outline { background: #fff; border: 1px solid var(--color-border); color: var(--color-primary); }
.btn-outline:hover { border-color: var(--color-primary); background: var(--color-primary-soft); }
.btn-white { background: #fff; color: var(--color-primary); font-weight: 600; }
.btn-white:hover { background: #f0f4ff; transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.btn-lg { padding: 16px 36px; font-size: 16px; border-radius: 10px; }
.btn-block-mobile { display: inline-flex; }
.link-arrow { display: inline-flex; align-items: center; gap: 4px; font-size: 14px; font-weight: 500; color: var(--color-primary); }
.link-arrow:hover { color: var(--color-primary-dark); }
.link-arrow .arrow { transition: transform 0.2s ease; }
.link-arrow:hover .arrow { transform: translateX(4px); }

/* Badge */
.badge { display: inline-block; font-size: 13px; font-weight: 500; border-radius: 999px; padding: 4px 14px; background: var(--color-primary-soft); color: var(--color-primary-dark); }
.badge--accent { background: var(--color-accent-soft); color: var(--color-accent); }
.badge--warning { background: rgba(240,168,58,0.15); color: #B8730A; }
.badge--hero { background: rgba(255,255,255,0.9); color: var(--color-primary-dark); box-shadow: 0 2px 8px rgba(31,42,68,0.10); }

/* Sidebar */
.sidebar {
  width: 240px;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  background: var(--color-sidebar-bg);
  z-index: 200;
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  box-shadow: var(--shadow-sidebar);
}
.sidebar__brand { display: flex; align-items: center; gap: 10px; padding: 8px 8px 20px; }
.sidebar__logo-icon { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 17px; font-weight: 700; flex-shrink: 0; }
.sidebar__logo-text { color: #fff; font-size: 16px; font-weight: 700; line-height: 1.3; letter-spacing: 0.01em; }
.sidebar__nav { flex: 1; display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.sidebar__nav-item { position: relative; }
.sidebar__nav-link {
  display: block;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  transition: all 0.2s ease;
}
.sidebar__nav-link:hover { background: rgba(255,255,255,0.08); color: #fff; }
.sidebar__nav-link.active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(46,107,230,0.3);
}
.sidebar__nav-link.active::before {
  content: '';
  position: absolute;
  left: -4px; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 20px;
  border-radius: 3px;
  background: #fff;
}
.sidebar__status {
  background: rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 14px;
  margin-top: 16px;
}
.sidebar__status-row { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,0.85); margin-bottom: 10px; }
.sidebar__status-dot { width: 8px; height: 8px; border-radius: 50%; background: #22C55E; box-shadow: 0 0 0 3px rgba(34,197,94,0.25); flex-shrink: 0; }
.sidebar__status-btn { display: block; width: 100%; text-align: center; padding: 8px 12px; border-radius: 6px; background: rgba(255,255,255,0.14); color: #fff; font-size: 13px; font-weight: 500; transition: all 0.2s; }
.sidebar__status-btn:hover { background: rgba(255,255,255,0.22); }

/* Topbar */
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; border-bottom: 1px solid var(--color-border-light); }
.topbar__crumb { font-size: 13px; color: var(--color-text-muted); }
.topbar__crumb a:hover { color: var(--color-primary); }
.topbar__right { font-size: 13px; color: var(--color-text-muted); display: flex; align-items: center; gap: 8px; }

/* Hero */
.hero { position: relative; padding: 96px 0 80px; overflow: hidden; }
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity: 0.18;
  z-index: 0;
}
.hero::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(245,248,251,0.95) 40%, rgba(255,255,255,0.70) 100%);
  z-index: 1;
}
.hero__content { position: relative; z-index: 2; display: grid; grid-template-columns: 7fr 5fr; gap: 56px; align-items: center; }
.hero__badge { display: inline-block; background: rgba(255,255,255,0.95); box-shadow: var(--shadow-card); border: 1px solid var(--color-border-light); border-radius: 999px; padding: 8px 18px; font-size: 13px; font-weight: 600; color: var(--color-primary-dark); margin-bottom: 20px; }
.hero__title { font-size: 36px; font-weight: 700; line-height: 1.3; letter-spacing: -0.015em; color: var(--color-text-main); margin-bottom: 18px; }
.hero__subtitle { font-size: 16px; line-height: 1.8; color: var(--color-text-body); max-width: 560px; margin-bottom: 32px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
.hero__stats { display: flex; gap: 40px; flex-wrap: wrap; padding-top: 24px; border-top: 1px solid var(--color-border-light); }
.hero__stat-item { }
.hero__stat-num { font-size: 26px; font-weight: 700; color: var(--color-text-main); line-height: 1.2; }
.hero__stat-num span { color: var(--color-primary); }
.hero__stat-label { font-size: 13px; color: var(--color-text-muted); margin-top: 4px; }
.hero__visual { position: relative; }
.hero__image-wrap { position: relative; border-radius: var(--radius-l); overflow: hidden; box-shadow: var(--shadow-hover); }
.hero__image-wrap img { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: cover; }
.hero__image-tag { position: absolute; bottom: 16px; left: 16px; background: rgba(31,42,68,0.75); color: #fff; font-size: 12px; padding: 6px 12px; border-radius: 999px; backdrop-filter: blur(4px); }
.online-flag { display: inline-flex; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--color-border-light); border-radius: 999px; padding: 8px 16px; box-shadow: var(--shadow-card); font-size: 13px; font-weight: 500; color: var(--color-text-main); margin-top: 16px; }
.online-flag .dot { width: 8px; height: 8px; border-radius: 50%; background: #22C55E; box-shadow: 0 0 0 3px rgba(34,197,94,0.2); }

/* Features */
.features { padding: 0 0 80px; }
.features__grid { display: flex; gap: 24px; }
.feature-card { background: var(--color-surface); border-radius: var(--radius-m); box-shadow: var(--shadow-card); padding: 28px; flex: 1; border: 1px solid var(--color-border-light); transition: all 0.3s ease; }
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.feature-card--wide { flex: 1.2; }
.feature-card__icon { width: 48px; height: 48px; border-radius: 10px; background: var(--color-primary-soft); display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 16px; }
.feature-card__title { font-size: 17px; font-weight: 600; margin-bottom: 8px; color: var(--color-text-main); }
.feature-card__desc { font-size: 14px; color: var(--color-text-body); line-height: 1.7; }

/* Steps / Scenario */
.scenario { background: var(--color-surface); border-radius: var(--radius-l); box-shadow: var(--shadow-card); padding: 56px 48px; border: 1px solid var(--color-border-light); }
.scenario__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.scenario__steps { display: flex; flex-direction: column; gap: 28px; }
.step-item { display: flex; gap: 16px; }
.step-item__num { width: 32px; height: 32px; border-radius: 50%; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; flex-shrink: 0; margin-top: 2px; }
.step-item__title { font-size: 16px; font-weight: 600; color: var(--color-text-main); margin-bottom: 2px; }
.step-item__desc { font-size: 14px; color: var(--color-text-body); line-height: 1.6; }
.scenario__visual { position: relative; }
.scenario__visual img { width: 100%; border-radius: 16px; box-shadow: var(--shadow-hover); aspect-ratio: 16/10; object-fit: cover; }
.scenario__badge { position: absolute; right: 16px; bottom: 16px; background: var(--color-primary); color: #fff; font-size: 12px; padding: 5px 12px; border-radius: 999px; }

/* News / CMS */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card { display: block; background: var(--color-surface); border-radius: var(--radius-m); overflow: hidden; box-shadow: var(--shadow-card); border: 1px solid var(--color-border-light); transition: all 0.3s ease; }
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.news-card:hover .news-card__title { color: var(--color-primary); }
.news-card__thumb { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform 0.4s ease; }
.news-card__body { padding: 20px; }
.news-card__title { font-size: 16px; font-weight: 600; line-height: 1.5; color: var(--color-text-main); margin-bottom: 6px; transition: color 0.2s; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card__desc { font-size: 14px; color: var(--color-text-body); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; }
.news-card__meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.news-card__time { font-size: 13px; color: var(--color-text-muted); }
.empty-state { grid-column: 1 / -1; text-align: center; padding: 60px 20px; background: rgba(229,237,251,0.4); border-radius: var(--radius-m); border: 1px dashed var(--color-border); }
.empty-state__icon { font-size: 42px; margin-bottom: 12px; opacity: 0.5; }
.empty-state p { font-size: 15px; color: var(--color-text-muted); }

/* Categories */
.categories__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.category-card { background: var(--color-surface); border-radius: var(--radius-m); overflow: hidden; box-shadow: var(--shadow-card); border: 1px solid var(--color-border-light); transition: all 0.3s ease; }
.category-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.category-card__image { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.category-card__body { padding: 24px; }
.category-card__title { font-size: 18px; font-weight: 600; margin-bottom: 6px; color: var(--color-text-main); }
.category-card__desc { font-size: 14px; color: var(--color-text-body); line-height: 1.7; margin-bottom: 16px; }
.category-card__link { font-size: 14px; font-weight: 500; color: var(--color-primary); display: inline-flex; align-items: center; gap: 4px; }
.category-card__link:hover { color: var(--color-primary-dark); }
.category-card__link .arrow { transition: transform 0.2s; }
.category-card__link:hover .arrow { transform: translateX(4px); }

/* FAQ */
.faq { max-width: 860px; margin: 0 auto; }
.faq-item { background: var(--color-surface); border-radius: var(--radius-m); border: 1px solid var(--color-border-light); box-shadow: var(--shadow-card); margin-bottom: 14px; overflow: hidden; transition: box-shadow 0.25s ease; }
.faq-item.open { box-shadow: var(--shadow-hover); }
.faq-item__question { padding: 20px 22px; font-size: 16px; font-weight: 600; color: var(--color-text-main); cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.faq-item__icon { width: 24px; height: 24px; border-radius: 50%; background: var(--color-primary-soft); display: flex; align-items: center; justify-content: center; color: var(--color-primary); font-size: 16px; flex-shrink: 0; transition: all 0.25s ease; }
.faq-item.open .faq-item__icon { transform: rotate(45deg); background: var(--color-primary); color: #fff; }
.faq-item__answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-item__answer-inner { padding: 0 22px 20px; font-size: 15px; color: var(--color-text-body); line-height: 1.8; border-top: 1px solid var(--color-border-light); padding-top: 16px; }

/* About */
.about { background: rgba(229,237,251,0.4); border-radius: var(--radius-l); padding: 48px; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; border: 1px solid rgba(217,225,236,0.6); }
.about__label { font-size: 13px; font-weight: 600; color: var(--color-primary); margin-bottom: 8px; }
.about__text { font-size: 15px; color: var(--color-text-body); line-height: 1.8; max-width: 700px; }
.about__btn { flex-shrink: 0; }

/* CTA Bar */
.cta-bar { background: var(--color-primary); border-radius: var(--radius-l); padding: 40px 48px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; box-shadow: 0 8px 24px rgba(46,107,230,0.3); }
.cta-bar__text { color: #fff; font-size: 22px; font-weight: 700; line-height: 1.4; }
.cta-bar__sub { color: rgba(255,255,255,0.85); font-size: 14px; margin-top: 4px; font-weight: 400; }

/* Footer */
.footer { background: var(--color-footer-bg); margin-top: auto; padding: 56px 0 0; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer__brand-name { color: #fff; font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.footer__desc { color: rgba(255,255,255,0.6); font-size: 14px; line-height: 1.8; max-width: 360px; }
.footer__col-title { color: rgba(255,255,255,0.9); font-size: 14px; font-weight: 600; margin-bottom: 14px; }
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a { color: rgba(255,255,255,0.65); font-size: 14px; }
.footer__links a:hover { color: #fff; }
.footer__bottom { padding: 24px 0; text-align: center; color: rgba(255,255,255,0.4); font-size: 13px; line-height: 1.8; }
.footer__copyright { margin-bottom: 4px; }

/* Mobile Header */
.mobile-header { display: none; position: fixed; top: 0; left: 0; right: 0; height: 56px; background: #fff; border-bottom: 1px solid var(--color-border-light); z-index: 300; align-items: center; justify-content: space-between; padding: 0 16px; }
.mobile-header__btn { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border: none; background: transparent; border-radius: 8px; cursor: pointer; color: var(--color-text-main); font-size: 20px; }
.mobile-header__btn:hover { background: var(--color-primary-soft); }
.mobile-header__logo { font-size: 16px; font-weight: 700; color: var(--color-text-main); }
.mobile-header__cta { font-size: 13px; font-weight: 600; color: #fff; background: var(--color-primary); border-radius: 6px; padding: 6px 14px; }
.mobile-header__cta:hover { background: var(--color-primary-dark); }

/* Mobile Menu Drawer */
.mobile-overlay { display: none; position: fixed; inset: 0; background: rgba(15,23,33,0.5); z-index: 210; }
.mobile-overlay.show { display: block; }
.mobile-menu { position: fixed; top: 0; left: 0; bottom: 0; width: 280px; background: var(--color-sidebar-bg); z-index: 220; transform: translateX(-100%); transition: transform 0.3s ease; display: flex; flex-direction: column; padding: 24px 16px; }
.mobile-menu.open { transform: translateX(0); }
.mobile-menu__close { position: absolute; top: 16px; right: 16px; width: 32px; height: 32px; border-radius: 50%; background: rgba(255,255,255,0.1); border: none; color: #fff; font-size: 16px; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.mobile-menu__brand { display: flex; align-items: center; gap: 10px; padding: 8px 8px 20px; }
.mobile-menu .sidebar__nav-link { color: rgba(255,255,255,0.75); }
.mobile-menu .sidebar__nav-link:hover { background: rgba(255,255,255,0.08); color: #fff; }
.mobile-menu .sidebar__nav-link.active { background: var(--color-primary); color: #fff; }
.mobile-menu .sidebar__status { margin-top: auto; }

/* Mobile Bottom Bar */
.mobile-bottom-bar { display: none; position: fixed; bottom: 0; left: 0; right: 0; height: 60px; background: #fff; border-top: 1px solid var(--color-border-light); z-index: 190; align-items: center; justify-content: space-between; padding: 0 16px; box-shadow: 0 -2px 8px rgba(31,42,68,0.06); }
.mobile-bottom-bar__text { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; color: var(--color-text-main); }
.mobile-bottom-bar__dot { width: 8px; height: 8px; border-radius: 50%; background: #22C55E; box-shadow: 0 0 0 3px rgba(34,197,94,0.2); }
.mobile-bottom-bar__btn { background: var(--color-primary); color: #fff; font-size: 14px; font-weight: 600; padding: 8px 20px; border-radius: 8px; }
.mobile-bottom-bar__btn:hover { background: var(--color-primary-dark); }

/* Responsive */
@media (max-width: 1199px) {
  .container { padding: 0 24px; }
  .hero__content { gap: 32px; }
  .hero__title { font-size: 30px; }
  .features__grid { gap: 16px; }
  .feature-card { padding: 22px; }
}

@media (max-width: 991px) {
  .scenario__grid { grid-template-columns: 1fr; gap: 32px; }
  .hero__content { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { max-width: 560px; }
  .about { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 768px) {
  .layout { display: block; }
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding-top: 56px; }
  .mobile-header { display: flex; }
  .mobile-bottom-bar { display: flex; }
  body { padding-bottom: 60px; }
  .container { padding: 0 20px; }
  .section { padding: 48px 0; }
  .section__title { font-size: 24px; }
  .topbar { padding: 12px 0; }
  .hero { padding: 48px 0 56px; }
  .hero__title { font-size: 26px; line-height: 1.35; }
  .hero__subtitle { font-size: 15px; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .hero__stats { gap: 24px; }
  .hero__stat-num { font-size: 22px; }
  .features__grid { flex-direction: column; }
  .feature-card--wide { flex: 1; }
  .news-grid { grid-template-columns: 1fr; }
  .categories__grid { grid-template-columns: 1fr; }
  .scenario { padding: 32px 20px; }
  .cta-bar { padding: 32px 24px; flex-direction: column; text-align: center; }
  .cta-bar__text { font-size: 18px; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom { text-align: center; }
  .btn-lg { width: 100%; }
  .btn-block-mobile { width: 100%; }
  .mobile-bottom-bar .mobile-bottom-bar__btn { padding: 8px 16px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .section { padding: 40px 0; }
  .hero { padding: 40px 0 48px; }
  .hero__stats { flex-direction: column; gap: 16px; }
  .feature-card { padding: 20px; }
  .faq-item__question { padding: 16px 18px; font-size: 15px; }
  .about { padding: 28px 20px; }
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp 0.5s ease-out both; }

/* roulang page: category1 */
:root {
  --color-bg: #F5F8FB;
  --color-surface: #FFFFFF;
  --color-sidebar-bg: #1F2A44;
  --color-primary: #2E6BE6;
  --color-primary-dark: #1D4FAD;
  --color-primary-soft: #E5EDFB;
  --color-accent: #12A594;
  --color-accent-soft: #DFF6F2;
  --color-warning: #F0A83A;
  --color-text-main: #202938;
  --color-text-body: #3D4758;
  --color-text-muted: #8A94A6;
  --color-border: #D9E1EC;
  --color-border-light: #E9EFF5;
  --color-footer-bg: #17202E;
  --shadow-card: 0 2px 8px rgba(31, 42, 68, 0.06), 0 6px 24px rgba(31, 42, 68, 0.05);
  --shadow-hover: 0 6px 16px rgba(31, 42, 68, 0.10), 0 12px 32px rgba(31, 42, 68, 0.08);
  --shadow-sidebar: 2px 0 12px rgba(31, 42, 68, 0.08);
  --radius-s: 6px;
  --radius-m: 12px;
  --radius-l: 20px;
  --container-max: 1280px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.7;
  font-size: 15px;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }

/* ===== 布局骨架 ===== */
.layout { display: flex; min-height: 100vh; }
.main { flex: 1; margin-left: 240px; background: var(--color-bg); min-height: 100vh; display: flex; flex-direction: column; }

/* ===== 左侧导航 ===== */
.sidebar {
  width: 240px;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  background: var(--color-sidebar-bg);
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  box-shadow: var(--shadow-sidebar);
  overflow-y: auto;
}
.sidebar__brand { display: flex; align-items: center; gap: 12px; padding: 4px 8px 28px; }
.sidebar__logo {
  width: 42px; height: 42px; border-radius: 10px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 20px; font-weight: 800;
  box-shadow: 0 4px 12px rgba(46, 107, 230, 0.3);
}
.sidebar__name { color: #fff; font-size: 16px; font-weight: 700; line-height: 1.3; }
.sidebar__name span { display: block; font-size: 12px; font-weight: 400; color: rgba(255,255,255,0.55); margin-top: 2px; }
.sidebar__nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.sidebar__nav-item { position: relative; }
.sidebar__nav-link {
  display: flex; align-items: center; gap: 10px;
  height: 44px; padding: 0 14px; border-radius: 10px;
  color: rgba(255,255,255,0.85); font-size: 14px; font-weight: 500;
  transition: all 0.2s ease;
}
.sidebar__nav-link i { width: 18px; text-align: center; font-size: 14px; opacity: 0.8; }
.sidebar__nav-link:hover { background: rgba(255,255,255,0.08); color: #fff; }
.sidebar__nav-link.active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(46, 107, 230, 0.35);
  border-left: 3px solid #fff;
  padding-left: 11px;
}
.sidebar__status {
  margin-top: 24px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-m);
  padding: 16px;
}
.sidebar__status__top { display: flex; align-items: center; gap: 8px; font-size: 13px; color: #fff; font-weight: 500; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #22C55E; box-shadow: 0 0 0 3px rgba(34,197,94,0.25); }
.sidebar__status__btn {
  width: 100%; margin-top: 12px; height: 34px;
  background: rgba(255,255,255,0.14); color: #fff;
  border-radius: 8px; font-size: 13px; font-weight: 500;
  display: flex; align-items: center; justify-content: center; gap: 6px;
  transition: all 0.2s ease;
}
.sidebar__status__btn:hover { background: var(--color-primary); }

/* ===== 顶部栏 ===== */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  height: 56px; padding: 0 32px;
  background: rgba(245,248,251,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky; top: 0; z-index: 50;
}
.topbar__crumbs { font-size: 13px; color: var(--color-text-muted); }
.topbar__crumbs a { color: var(--color-primary); }
.topbar__crumbs a:hover { text-decoration: underline; }
.topbar__right { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--color-text-muted); }
.topbar__right i { color: var(--color-primary); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 32px; border-radius: 10px;
  font-size: 15px; font-weight: 600;
  transition: all 0.2s ease;
  border: none;
}
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: 0 4px 14px rgba(46,107,230,0.25); }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-primary:active { transform: scale(0.98); }
.btn-outline { background: #fff; border: 1px solid var(--color-border); color: var(--color-primary); }
.btn-outline:hover { border-color: var(--color-primary); background: var(--color-primary-soft); transform: translateY(-2px); }
.btn-outline-light { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.35); color: #fff; }
.btn-outline-light:hover { background: rgba(255,255,255,0.18); border-color: #fff; transform: translateY(-2px); }
.btn-lg { height: 52px; padding: 0 40px; font-size: 16px; border-radius: 12px; }
.btn-block { width: 100%; }

/* ===== Hero ===== */
.category-hero {
  position: relative;
  padding: 96px 32px 88px;
  background: linear-gradient(110deg, rgba(23,32,46,0.94) 0%, rgba(31,42,68,0.82) 40%, rgba(31,42,68,0.55) 100%), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  color: #fff;
}
.hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 6px 16px; border-radius: 40px;
  font-size: 13px; font-weight: 500;
  letter-spacing: 0.02em;
  backdrop-filter: blur(4px);
}
.hero__badge i { color: #FFD666; }
.hero__title {
  font-size: 42px; font-weight: 800;
  line-height: 1.25;
  margin: 20px 0 16px;
  letter-spacing: -0.01em;
}
.hero__lead {
  font-size: 17px; line-height: 1.8;
  color: rgba(255,255,255,0.88);
  max-width: 600px;
  margin-bottom: 32px;
}
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__meta { display: flex; gap: 28px; margin-top: 40px; flex-wrap: wrap; }
.hero__meta-item { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255,255,255,0.7); }
.hero__meta-item i { color: #FFD666; }

/* ===== 通用板块 ===== */
.section { padding: 80px 32px; }
.section--alt { background: var(--color-surface); border-top: 1px solid var(--color-border-light); border-bottom: 1px solid var(--color-border-light); }
.section--soft { background: #EAF1F7; }
.container { max-width: var(--container-max); margin: 0 auto; }
.section__head { max-width: 680px; margin-bottom: 44px; }
.section__tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  padding: 5px 14px; border-radius: 30px;
  font-size: 13px; font-weight: 600;
  margin-bottom: 12px;
}
.section__title { font-size: 28px; font-weight: 700; line-height: 1.35; color: var(--color-text-main); }
.section__lead { font-size: 16px; color: var(--color-text-body); margin-top: 12px; line-height: 1.75; }
.section__more { display: inline-flex; align-items: center; gap: 6px; color: var(--color-primary); font-size: 15px; font-weight: 600; transition: gap 0.2s ease; }
.section__more:hover { gap: 10px; }

/* ===== 功能卖点 ===== */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.feature-card {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-m);
  padding: 28px;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
  transition: all 0.2s ease;
}
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.feature-card--wide { grid-column: span 2; display: flex; gap: 24px; align-items: center; }
.feature-card__icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.feature-card--wide .feature-card__icon { width: 64px; height: 64px; font-size: 26px; border-radius: 16px; }
.feature-card__title { font-size: 17px; font-weight: 600; margin-top: 16px; }
.feature-card--wide .feature-card__title { margin-top: 0; }
.feature-card__text { font-size: 14px; color: var(--color-text-body); line-height: 1.75; margin-top: 8px; }
.feature-card--wide .feature-card__text { margin-top: 6px; }

/* ===== 游戏卡片 ===== */
.game-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.game-card {
  background: var(--color-surface);
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
  transition: all 0.2s ease;
  display: flex; flex-direction: column;
}
.game-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.game-card__thumb { aspect-ratio: 16 / 10; overflow: hidden; position: relative; }
.game-card__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.game-card:hover .game-card__thumb img { transform: scale(1.05); }
.game-card__thumb__tag {
  position: absolute; top: 12px; left: 12px;
  background: rgba(23,32,46,0.7);
  color: #fff; font-size: 12px;
  padding: 4px 12px; border-radius: 30px;
  backdrop-filter: blur(4px);
}
.game-card__body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.game-card__title { font-size: 17px; font-weight: 600; color: var(--color-text-main); }
.game-card__title a:hover { color: var(--color-primary); }
.game-card__desc { font-size: 14px; color: var(--color-text-body); line-height: 1.7; margin: 10px 0 16px; flex: 1; }
.game-card__link { color: var(--color-primary); font-size: 14px; font-weight: 600; display: inline-flex; align-items: center; gap: 4px; transition: gap 0.2s ease; }
.game-card__link:hover { gap: 8px; }

/* ===== 步骤流程 ===== */
.steps-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.steps-media { position: relative; }
.steps-media img { width: 100%; border-radius: var(--radius-l); box-shadow: var(--shadow-hover); }
.steps-media__badge {
  position: absolute; right: 16px; bottom: 16px;
  background: rgba(23,32,46,0.8);
  color: #fff; font-size: 13px;
  padding: 6px 16px; border-radius: 30px;
  backdrop-filter: blur(4px);
}
.steps-list { display: flex; flex-direction: column; gap: 4px; }
.step-item { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px dashed var(--color-border); }
.step-item:last-child { border-bottom: none; }
.step-num {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--color-primary);
  color: #fff; font-weight: 700; font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(46,107,230,0.25);
}
.step-body__title { font-size: 16px; font-weight: 600; }
.step-body__text { font-size: 14px; color: var(--color-text-body); line-height: 1.7; margin-top: 4px; }

/* ===== 数据条 ===== */
.stats-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  background: var(--color-surface);
  border-radius: var(--radius-l);
  padding: 36px 24px;
  box-shadow: var(--shadow-card);
  margin-bottom: 40px;
}
.stat-item { text-align: center; position: relative; }
.stat-item + .stat-item::before {
  content: '';
  position: absolute; left: -12px; top: 20%;
  height: 60%; width: 1px; background: var(--color-border-light);
}
.stat-num { font-size: 38px; font-weight: 800; color: var(--color-primary); line-height: 1.2; }
.stat-num span { font-size: 18px; font-weight: 600; }
.stat-label { font-size: 14px; color: var(--color-text-muted); margin-top: 4px; }

/* ===== 玩家评价 ===== */
.quote-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.quote-card {
  background: var(--color-surface);
  border-radius: var(--radius-m);
  padding: 30px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
  position: relative;
}
.quote-card i.fa-quote-left {
  position: absolute; top: 22px; right: 24px;
  font-size: 40px; color: var(--color-primary-soft);
}
.quote-card__text { font-size: 15px; color: var(--color-text-body); line-height: 1.85; position: relative; }
.quote-card__person { display: flex; align-items: center; gap: 10px; margin-top: 20px; }
.quote-card__avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--color-primary-soft); color: var(--color-primary-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
}
.quote-card__name { font-size: 14px; font-weight: 600; color: var(--color-text-main); }
.quote-card__tag { font-size: 12px; color: var(--color-text-muted); }

/* ===== FAQ ===== */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--color-surface);
  border-radius: var(--radius-m);
  margin-bottom: 16px;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}
.faq-item:hover { box-shadow: var(--shadow-hover); }
.faq-item__q {
  width: 100%;
  padding: 20px 24px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  text-align: left;
  font-size: 16px; font-weight: 600; color: var(--color-text-main);
  transition: color 0.2s ease;
}
.faq-item__q:hover { color: var(--color-primary); }
.faq-item__q i {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--color-primary-soft); color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; flex-shrink: 0;
  transition: transform 0.25s ease, background 0.25s ease;
}
.faq-item.open .faq-item__q i { transform: rotate(45deg); background: var(--color-primary); color: #fff; }
.faq-item__a {
  max-height: 0; overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.open .faq-item__a { max-height: 300px; }
.faq-item__a__inner {
  padding: 0 24px 22px;
  font-size: 15px; color: var(--color-text-body); line-height: 1.8;
  border-top: 1px solid var(--color-border-light);
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-band {
  background: linear-gradient(120deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: var(--radius-l);
  color: #fff;
  padding: 52px 48px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
  box-shadow: 0 12px 40px rgba(46, 107, 230, 0.25);
  flex-wrap: wrap;
}
.cta-band h2 { font-size: 26px; font-weight: 700; line-height: 1.4; }
.cta-band p { font-size: 15px; color: rgba(255,255,255,0.85); margin-top: 8px; max-width: 480px; }
.cta-band .btn-white {
  background: #fff; color: var(--color-primary);
  height: 52px; padding: 0 36px; border-radius: 12px; font-weight: 700;
  display: inline-flex; align-items: center; gap: 8px;
  transition: all 0.2s ease;
}
.cta-band .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

/* ===== 页脚 ===== */
.footer {
  background: var(--color-footer-bg);
  color: rgba(255,255,255,0.7);
  padding: 40px 32px 24px;
  margin-top: auto;
}
.footer__grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px;
}
.footer__brand-name { color: #fff; font-size: 18px; font-weight: 700; }
.footer__desc { font-size: 14px; line-height: 1.8; margin-top: 10px; max-width: 360px; }
.footer__col-title { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 14px; }
.footer__links { display: flex; flex-direction: column; gap: 8px; }
.footer__links a { font-size: 14px; color: rgba(255,255,255,0.7); transition: color 0.2s ease; }
.footer__links a:hover { color: #fff; }
.footer__bottom {
  max-width: var(--container-max);
  margin: 36px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 13px; color: rgba(255,255,255,0.5);
}

/* ===== 移动端顶部栏 ===== */
.mobile-header {
  display: none;
  position: sticky; top: 0; z-index: 90;
  height: 56px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  padding: 0 16px;
  align-items: center;
  justify-content: space-between;
}
.mobile-header__btn {
  width: 40px; height: 40px;
  background: var(--color-primary-soft);
  border-radius: 10px;
  color: var(--color-primary);
  font-size: 17px;
  display: flex; align-items: center; justify-content: center;
}
.mobile-header__logo { font-size: 16px; font-weight: 700; color: var(--color-text-main); }
.mobile-header__cta {
  height: 34px; padding: 0 16px;
  background: var(--color-primary); color: #fff;
  border-radius: 8px; font-size: 13px; font-weight: 600;
  display: flex; align-items: center; gap: 6px;
}

/* ===== 移动端抽屉 ===== */
.mobile-drawer {
  display: none;
  position: fixed; top: 0; left: 0;
  width: 280px; height: 100vh;
  background: var(--color-sidebar-bg);
  z-index: 110;
  padding: 24px 16px;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer__close {
  position: absolute; top: 20px; right: 16px;
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.1);
  color: #fff; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
}
.mobile-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(15,23,33,0.5);
  z-index: 105;
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}
.mobile-overlay.show { opacity: 1; pointer-events: auto; }
body.nav-lock { overflow: hidden; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .game-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main { margin-left: 0; }
  .mobile-header { display: flex; }
  .mobile-drawer { display: flex; }
  .topbar { display: none; }
  .category-hero { padding: 64px 20px 56px; }
  .hero__title { font-size: 28px; }
  .hero__lead { font-size: 15px; }
  .hero__actions .btn { width: 100%; }
  .section { padding: 48px 20px; }
  .section__title { font-size: 24px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card--wide { grid-column: span 1; flex-direction: column; align-items: flex-start; }
  .game-grid { grid-template-columns: 1fr; }
  .steps-wrap { grid-template-columns: 1fr; gap: 32px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 24px 12px; }
  .stat-item + .stat-item::before { display: none; }
  .quote-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 32px 24px; }
  .cta-band .btn-white { width: 100%; justify-content: center; }
  .footer { padding: 32px 20px 20px; }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .footer__bottom { flex-direction: column; align-items: center; text-align: center; }
}
@media (max-width: 520px) {
  .game-grid { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; }
  .btn { width: 100%; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
}

/* roulang page: article */
:root {
    --color-bg: #F5F8FB;
    --color-surface: #FFFFFF;
    --color-sidebar-bg: #1F2A44;
    --color-primary: #2E6BE6;
    --color-primary-dark: #1D4FAD;
    --color-primary-soft: #E5EDFB;
    --color-accent: #12A594;
    --color-accent-soft: #DFF6F2;
    --color-warning: #F0A83A;
    --color-text-main: #202938;
    --color-text-body: #3D4758;
    --color-text-muted: #8A94A6;
    --color-border: #D9E1EC;
    --color-border-light: #E9EFF5;
    --color-footer-bg: #17202E;
    --shadow-card: 0 2px 8px rgba(31,42,68,.06), 0 6px 24px rgba(31,42,68,.05);
    --shadow-hover: 0 6px 16px rgba(31,42,68,.10), 0 12px 32px rgba(31,42,68,.08);
    --shadow-sidebar: 2px 0 12px rgba(31,42,68,.08);
    --radius-s: 6px;
    --radius-m: 12px;
    --radius-l: 20px;
    --container-max: 1280px;
    --readable-width: 780px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-body);
    background: var(--color-bg);
    display: flex;
    min-height: 100vh;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 32px; width: 100%; }

/* 侧边栏 */
.sidebar {
    width: 240px;
    background: var(--color-sidebar-bg);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    z-index: 100;
    box-shadow: var(--shadow-sidebar);
}
.sidebar__brand { padding: 8px 8px 24px; border-bottom: 1px solid rgba(255,255,255,.08); margin-bottom: 20px; }
.sidebar__brand-link { display: flex; align-items: center; gap: 10px; }
.brand-icon {
    width: 36px; height: 36px; border-radius: 8px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff; font-size: 18px; font-weight: 700;
    display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.brand-name { font-size: 17px; font-weight: 700; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar__nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.sidebar__nav-item { position: relative; }
.sidebar__nav-link {
    display: flex; align-items: center; height: 44px; padding: 0 14px;
    border-radius: 8px; color: rgba(255,255,255,.85); font-size: 15px; font-weight: 500;
    transition: all .2s ease;
}
.sidebar__nav-link:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar__nav-link.active { background: var(--color-primary); color: #fff; padding-left: 18px; }
.sidebar__nav-link.active::before {
    content: ""; position: absolute; left: 4px; top: 50%;
    transform: translateY(-50%); width: 3px; height: 18px;
    background: #fff; border-radius: 2px;
}
.sidebar__status { background: rgba(255,255,255,.08); border-radius: var(--radius-m); padding: 16px; margin-top: 20px; }
.sidebar__status-dot { width: 8px; height: 8px; border-radius: 50%; background: #22C55E; display: inline-block; margin-right: 6px; box-shadow: 0 0 0 3px rgba(34,197,94,.2); }
.sidebar__status span { font-size: 13px; color: rgba(255,255,255,.85); }
.sidebar__status-btn { display: block; text-align: center; background: rgba(255,255,255,.12); color: #fff; padding: 10px 0; border-radius: 6px; margin-top: 12px; font-size: 14px; font-weight: 500; transition: all .2s; }
.sidebar__status-btn:hover { background: rgba(255,255,255,.2); }

/* 主内容区 */
.main-content { margin-left: 240px; flex: 1; min-height: 100vh; display: flex; flex-direction: column; }

/* 顶部栏 */
.topbar { background: var(--color-bg); border-bottom: 1px solid var(--color-border-light); padding: 16px 0; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--color-text-muted); }
.breadcrumb a { color: var(--color-primary); transition: color .2s; }
.breadcrumb a:hover { color: var(--color-primary-dark); }
.breadcrumb__sep { color: var(--color-text-muted); }
.breadcrumb__current { color: var(--color-text-muted); max-width: 400px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* 文章主区 */
.article-main { padding: 40px 0; flex: 1; }
.article-card { background: var(--color-surface); border-radius: var(--radius-l); box-shadow: var(--shadow-card); padding: 48px; margin-bottom: 40px; }
.article-header { text-align: center; max-width: var(--readable-width); margin: 0 auto 40px; padding-bottom: 32px; border-bottom: 1px solid var(--color-border-light); }
.badge { display: inline-block; background: var(--color-primary-soft); color: var(--color-primary-dark); border-radius: var(--radius-s); padding: 4px 12px; font-size: 13px; font-weight: 500; }
.article-header h1 { font-size: 34px; font-weight: 700; color: var(--color-text-main); line-height: 1.35; margin: 16px 0; }
.article-meta { display: flex; align-items: center; justify-content: center; gap: 12px; font-size: 14px; color: var(--color-text-muted); flex-wrap: wrap; }
.article-meta__dot { color: var(--color-border); }

/* 正文 */
.article-content { max-width: var(--readable-width); margin: 0 auto; font-size: 16px; line-height: 1.85; color: var(--color-text-body); }
.article-content p { margin-bottom: 24px; }
.article-content h2 { font-size: 24px; font-weight: 700; color: var(--color-text-main); margin: 40px 0 16px; }
.article-content h3 { font-size: 20px; font-weight: 700; color: var(--color-text-main); margin: 32px 0 14px; }
.article-content h4 { font-size: 17px; font-weight: 600; color: var(--color-text-main); margin: 24px 0 12px; }
.article-content ul, .article-content ol { margin: 16px 0 24px; padding-left: 24px; }
.article-content ul li, .article-content ol li { margin-bottom: 8px; }
.article-content ul li::marker { color: var(--color-primary); }
.article-content blockquote { border-left: 4px solid var(--color-primary); background: rgba(46,107,230,.06); padding: 16px 20px; border-radius: 0 8px 8px 0; margin: 24px 0; }
.article-content img { max-width: 100%; border-radius: 12px; margin: 24px auto; height: auto; }
.article-content a { color: var(--color-primary-dark); text-decoration: underline; }
.article-content a:hover { text-decoration: none; }
.article-content figure { margin: 24px 0; }
.article-content figcaption { text-align: center; font-size: 13px; color: var(--color-text-muted); margin-top: 8px; }
.article-content table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.article-content th, .article-content td { padding: 12px 16px; border: 1px solid var(--color-border); text-align: left; }
.article-content th { background: var(--color-primary-soft); font-weight: 600; }
.article-content pre { background: #1F2933; color: #E5E7EB; padding: 16px; border-radius: 8px; overflow-x: auto; margin: 16px 0; font-size: 14px; line-height: 1.6; }
.article-content code { font-family: "SF Mono", Monaco, Consolas, monospace; }

/* 相关推荐 */
.article-footer { max-width: var(--readable-width); margin: 48px auto 0; padding-top: 32px; border-top: 1px solid var(--color-border-light); }
.related-posts h3 { font-size: 18px; font-weight: 700; color: var(--color-text-main); margin-bottom: 20px; }
.related-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.related-item { display: flex; gap: 14px; padding: 12px; border-radius: var(--radius-m); border: 1px solid var(--color-border-light); transition: all .2s; background: var(--color-surface); }
.related-item:hover { box-shadow: var(--shadow-hover); border-color: var(--color-primary); transform: translateY(-2px); }
.related-item__img { width: 96px; height: 72px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
.related-item__info h4 { font-size: 15px; font-weight: 600; color: var(--color-text-main); line-height: 1.4; margin-bottom: 4px; transition: color .2s; }
.related-item__info h4:hover { color: var(--color-primary); }
.related-item__info span { font-size: 13px; color: var(--color-text-muted); }
.back-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 28px; color: var(--color-primary); font-size: 14px; font-weight: 500; transition: all .2s; }
.back-link:hover { color: var(--color-primary-dark); gap: 10px; }

/* 空状态 */
.article-empty { background: var(--color-surface); border-radius: var(--radius-l); box-shadow: var(--shadow-card); padding: 80px 40px; text-align: center; margin-bottom: 40px; }
.article-empty__icon { font-size: 48px; margin-bottom: 20px; color: var(--color-text-muted); }
.article-empty h2 { font-size: 24px; color: var(--color-text-main); margin-bottom: 12px; }
.article-empty p { color: var(--color-text-muted); margin-bottom: 28px; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; border-radius: 8px; font-size: 15px; font-weight: 500; transition: all .2s ease; border: 1px solid transparent; }
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-dark); box-shadow: var(--shadow-hover); transform: translateY(-1px); }
.btn--outline { background: #fff; border-color: var(--color-border); color: var(--color-primary); }
.btn--outline:hover { border-color: var(--color-primary); background: var(--color-primary-soft); }
.btn--white { background: #fff; color: var(--color-primary); }
.btn--white:hover { background: var(--color-primary-soft); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(255,255,255,.2); }

/* FAQ */
.faq-section { padding: 60px 0 40px; background: var(--color-bg); }
.faq-section .section-title { font-size: 28px; font-weight: 700; color: var(--color-text-main); text-align: center; margin-bottom: 8px; }
.faq-section .section-desc { text-align: center; color: var(--color-text-muted); margin-bottom: 36px; font-size: 16px; }
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--color-surface); border-radius: var(--radius-m); box-shadow: var(--shadow-card); overflow: hidden; transition: box-shadow .2s; }
.faq-item:hover { box-shadow: var(--shadow-hover); }
.faq-item__question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; font-size: 16px; font-weight: 600; color: var(--color-text-main); text-align: left; background: none; }
.faq-item__icon { width: 24px; height: 24px; border-radius: 50%; background: var(--color-primary-soft); color: var(--color-primary); display: flex; align-items: center; justify-content: center; font-size: 16px; transition: transform .25s, background .25s, color .25s; flex-shrink: 0; }
.faq-item.active .faq-item__icon { transform: rotate(45deg); background: var(--color-primary); color: #fff; }
.faq-item__answer { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-item.active .faq-item__answer { max-height: 300px; }
.faq-item__answer p { padding: 16px 24px 20px; font-size: 15px; color: var(--color-text-body); line-height: 1.75; border-top: 1px solid var(--color-border-light); }

/* CTA */
.cta-bar { padding: 16px 0 64px; }
.cta-bar__inner { background: var(--color-primary); border-radius: var(--radius-l); padding: 40px 48px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-bar h2 { color: #fff; font-size: 24px; font-weight: 700; }
.cta-bar .btn--white { padding: 14px 36px; font-size: 16px; border-radius: 10px; }

/* 页脚 */
.footer { background: var(--color-footer-bg); color: rgba(255,255,255,.8); padding: 60px 0 32px; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
.footer__brand-name { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer__desc { font-size: 14px; color: rgba(255,255,255,.6); line-height: 1.7; max-width: 360px; }
.footer__col-title { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a { color: rgba(255,255,255,.6); font-size: 14px; transition: color .2s; }
.footer__links a:hover { color: #fff; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px; display: flex; justify-content: space-between; font-size: 13px; color: rgba(255,255,255,.45); gap: 16px; flex-wrap: wrap; }

/* 移动端头部 */
.mobile-header { display: none; }
.drawer, .drawer-overlay { display: none; }

/* 移动端样式 */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; }
    .container { padding: 0 16px; }
    .mobile-header {
        display: flex; align-items: center; justify-content: space-between;
        height: 56px; background: var(--color-surface);
        border-bottom: 1px solid var(--color-border-light);
        padding: 0 16px; position: sticky; top: 0; z-index: 90;
    }
    .mobile-header__toggle {
        width: 40px; height: 40px; display: inline-flex; flex-direction: column;
        align-items: center; justify-content: center; gap: 4px;
    }
    .mobile-header__toggle span { width: 18px; height: 2px; background: var(--color-text-main); border-radius: 2px; }
    .mobile-header__brand { display: flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 700; color: var(--color-text-main); }
    .mobile-header__brand .brand-icon { width: 28px; height: 28px; font-size: 14px; border-radius: 6px; }
    .mobile-header__cta { padding: 6px 14px; background: var(--color-primary-soft); color: var(--color-primary); border-radius: 6px; font-size: 13px; font-weight: 600; }
    .drawer-overlay { position: fixed; inset: 0; background: rgba(15,23,33,.5); z-index: 150; opacity: 0; pointer-events: none; transition: opacity .3s; }
    .drawer-overlay.show { opacity: 1; pointer-events: auto; }
    .drawer { display: flex; flex-direction: column; position: fixed; top: 0; left: 0; width: 280px; height: 100vh; background: var(--color-sidebar-bg); z-index: 160; transform: translateX(-100%); transition: transform .3s ease; padding: 24px 16px; }
    .drawer.open { transform: translateX(0); }
    .drawer__header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,.08); }
    .drawer__brand { display: flex; align-items: center; gap: 10px; }
    .drawer__brand .brand-icon { width: 32px; height: 32px; font-size: 16px; }
    .drawer__brand-name { color: #fff; font-size: 17px; font-weight: 700; }
    .drawer__close { width: 32px; height: 32px; color: rgba(255,255,255,.8); font-size: 20px; border-radius: 6px; display: flex; align-items: center; justify-content: center; }
    .drawer__close:hover { background: rgba(255,255,255,.1); }
    .drawer__nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
    .drawer__nav-link { padding: 12px 14px; color: rgba(255,255,255,.85); font-size: 15px; border-radius: 8px; transition: all .2s; }
    .drawer__nav-link:hover { background: rgba(255,255,255,.08); color: #fff; }
    .drawer__nav-link.active { background: var(--color-primary); color: #fff; }
    .drawer__status { background: rgba(255,255,255,.08); border-radius: 12px; padding: 16px; font-size: 13px; color: rgba(255,255,255,.85); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
    .drawer__status .status-dot { width: 8px; height: 8px; background: #22C55E; border-radius: 50%; display: inline-block; margin-right: 2px; box-shadow: 0 0 0 3px rgba(34,197,94,.2); }
    .drawer__status .btn { width: 100%; text-align: center; margin-top: 8px; padding: 10px; background: var(--color-primary); color: #fff; border-radius: 6px; font-size: 14px; font-weight: 500; }
    .topbar { padding: 12px 0; }
    .breadcrumb__current { max-width: 200px; }
    .article-main { padding: 24px 0; }
    .article-card { padding: 28px 16px; border-radius: var(--radius-m); }
    .article-header h1 { font-size: 26px; }
    .article-header { margin-bottom: 24px; padding-bottom: 24px; }
    .article-meta { gap: 8px; font-size: 13px; }
    .related-list { grid-template-columns: 1fr; }
    .related-item__img { width: 80px; height: 60px; }
    .faq-section { padding: 40px 0 24px; }
    .faq-section .section-title { font-size: 24px; }
    .cta-bar { padding: 16px 0 40px; }
    .cta-bar__inner { padding: 28px 20px; flex-direction: column; text-align: center; }
    .cta-bar h2 { font-size: 20px; }
    .cta-bar .btn--white { width: 100%; }
    .footer__grid { grid-template-columns: 1fr; gap: 32px; }
    .footer__bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
    .article-card { padding: 20px 14px; }
    .article-header h1 { font-size: 22px; }
    .article-content { font-size: 15px; line-height: 1.8; }
    .faq-item__question { padding: 16px 18px; font-size: 15px; }
    .faq-item__answer p { padding: 12px 18px 16px; }
    .cta-bar__inner { padding: 24px 16px; }
    .cta-bar h2 { font-size: 18px; }
}

/* roulang page: category2 */
:root {
  --color-bg: #F5F8FB;
  --color-surface: #FFFFFF;
  --color-sidebar-bg: #1F2A44;
  --color-primary: #2E6BE6;
  --color-primary-dark: #1D4FAD;
  --color-primary-soft: #E5EDFB;
  --color-accent: #12A594;
  --color-accent-soft: #DFF6F2;
  --color-warning: #F0A83A;
  --color-text-main: #202938;
  --color-text-body: #3D4758;
  --color-text-muted: #8A94A6;
  --color-border: #D9E1EC;
  --color-border-light: #E9EFF5;
  --color-footer-bg: #17202E;
  --shadow-card: 0 2px 8px rgba(31,42,68,0.06), 0 6px 24px rgba(31,42,68,0.05);
  --shadow-hover: 0 6px 16px rgba(31,42,68,0.10), 0 12px 32px rgba(31,42,68,0.08);
  --shadow-sidebar: 2px 0 12px rgba(31,42,68,0.08);
  --radius-s: 6px;
  --radius-m: 12px;
  --radius-l: 20px;
  --container-max: 1280px;
  --readable-width: 780px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-body);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  padding-bottom: 60px;
}

body.no-scroll {
  overflow: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius-m);
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

.section {
  padding: 72px 0;
}

.section--soft {
  background: var(--color-bg);
}

.section__head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 44px;
}

.section__head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.section__head p {
  font-size: 16px;
  color: var(--color-text-body);
  line-height: 1.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1.4;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 6px rgba(46,107,230,0.25);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  box-shadow: var(--shadow-hover);
}

.btn--white {
  background: #fff;
  color: var(--color-primary);
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.btn--white:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-hover);
}

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}

.btn--outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.10);
  color: #fff;
}

.btn--large {
  padding: 14px 36px;
  font-size: 16px;
  border-radius: 10px;
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 240px;
  height: 100vh;
  background: var(--color-footer-bg);
  background: linear-gradient(180deg, #1F2A44 0%, #182234 100%);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  scrollbar-width: none;
}

.sidebar::-webkit-scrollbar {
  display: none;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 8px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 20px;
}

.sidebar__logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(46,107,230,0.35);
}

.sidebar__brand-text {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  line-height: 1.3;
}

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

.sidebar__nav-item {
  list-style: none;
}

.sidebar__nav-link {
  display: flex;
  align-items: center;
  padding: 11px 14px;
  border-radius: 8px;
  color: rgba(255,255,255,0.82);
  font-size: 14px;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
}

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

.sidebar__nav-link.active {
  background: var(--color-primary);
  border-left-color: #fff;
  color: #fff;
  box-shadow: 0 2px 10px rgba(46,107,230,0.4);
}

.sidebar__status {
  padding: 14px;
  border-radius: var(--radius-m);
  background: rgba(255,255,255,0.08);
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.85);
}

.sidebar__status-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22C55E;
  display: inline-block;
  flex-shrink: 0;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0.5); }
  50% { box-shadow: 0 0 0 4px rgba(34,197,94,0); }
}

.sidebar__status-btn {
  width: 100%;
  padding: 8px 12px;
  border-radius: var(--radius-s);
  background: rgba(255,255,255,0.14);
  color: #fff;
  font-size: 13px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.2);
  transition: all 0.2s ease;
}

.sidebar__status-btn:hover {
  background: rgba(255,255,255,0.22);
  color: #fff;
}

/* ===== Mobile Header ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 56px;
  background: #fff;
  border-bottom: 1px solid var(--color-border-light);
  z-index: 200;
  align-items: center;
  padding: 0 16px;
  box-shadow: 0 2px 8px rgba(31,42,68,0.05);
}

.mobile-header__menu {
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
}

.mobile-header__menu span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-main);
  border-radius: 2px;
  transition: all 0.2s ease;
}

.mobile-header__brand {
  flex: 1;
  text-align: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-main);
}

.mobile-header__brand .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: var(--color-primary);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-right: 6px;
  vertical-align: middle;
}

.mobile-header__cta {
  padding: 6px 16px;
  border-radius: 6px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
}

/* ===== Mobile Drawer ===== */
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background: var(--color-sidebar-bg);
  background: linear-gradient(180deg, #1F2A44 0%, #182234 100%);
  z-index: 300;
  padding: 20px 16px;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  scrollbar-width: none;
}

.mobile-drawer::-webkit-scrollbar {
  display: none;
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-drawer__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255,255,255,0.12);
  border-radius: 50%;
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.mobile-drawer__close:hover {
  background: rgba(255,255,255,0.2);
}

.mobile-drawer .sidebar__nav {
  margin-top: 12px;
}

.mobile-drawer .sidebar__status {
  margin-top: auto;
}

.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15,23,33,0.5);
  z-index: 250;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.drawer-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* ===== Main Layout ===== */
.main {
  margin-left: 240px;
  min-height: 100vh;
  background: var(--color-bg);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 32px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border-light);
  font-size: 13px;
  color: var(--color-text-muted);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(6px);
  background: rgba(245,248,251,0.92);
}

.topbar__crumb a {
  color: var(--color-text-muted);
  transition: color 0.2s;
}

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

.topbar__crumb .crumb-sep {
  margin: 0 6px;
  color: var(--color-border);
}

.topbar__status {
  display: flex;
  align-items: center;
  gap: 6px;
}

.topbar__status .status-dot {
  width: 6px;
  height: 6px;
}

/* ===== Category Hero ===== */
.category-hero {
  position: relative;
  background: linear-gradient(135deg, rgba(31,42,68,0.94) 0%, rgba(29,79,173,0.82) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color: #fff;
  padding: 80px 32px 64px;
  overflow: hidden;
}

.category-hero__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

.category-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.22);
  font-size: 13px;
  font-weight: 500;
  backdrop-filter: blur(4px);
  margin-bottom: 24px;
}

.category-hero__title {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: #fff;
  margin-bottom: 16px;
}

.category-hero__subtitle {
  font-size: 16px;
  line-height: 1.75;
  color: rgba(255,255,255,0.88);
  max-width: 620px;
  margin-bottom: 28px;
}

.category-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 44px;
}

.category-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.16);
  padding-top: 24px;
}

.category-hero__stats .stat-item {
  flex: 1;
  min-width: 120px;
  padding: 8px 16px 8px 0;
}

.category-hero__stats .stat-item + .stat-item {
  border-left: 1px solid rgba(255,255,255,0.16);
  padding-left: 24px;
}

.category-hero__stats strong {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
}

.category-hero__stats span {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
}

/* ===== Feature Cards ===== */
.feature-list {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-m);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 8px;
  line-height: 1.45;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-body);
  line-height: 1.7;
}

/* ===== Coverage Grid ===== */
.coverage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.coverage-card {
  background: var(--color-surface);
  border-radius: var(--radius-m);
  padding: 24px;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
  transition: all 0.2s ease;
  text-align: center;
}

.coverage-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: var(--color-primary-soft);
}

.coverage-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  margin: 0 auto 14px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}

.coverage-card:nth-child(2) .coverage-card__icon {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.coverage-card:nth-child(3) .coverage-card__icon {
  background: #FDF1DE;
  color: var(--color-warning);
}

.coverage-card:nth-child(4) .coverage-card__icon {
  background: #F0EFFD;
  color: #6C5CE7;
}

.coverage-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 8px;
}

.coverage-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ===== Process ===== */
.process-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  background: var(--color-surface);
  border-radius: var(--radius-l);
  padding: 44px;
  box-shadow: var(--shadow-card);
}

.process-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.35;
  margin-bottom: 8px;
}

.process-content .process-lead {
  font-size: 15px;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

.process-steps {
  list-style: none;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.process-steps li {
  counter-increment: step;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.process-steps li::before {
  content: counter(step, decimal-leading-zero);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 4px;
}

.process-steps .step-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-main);
  line-height: 1.4;
  display: block;
}

.process-steps .step-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: 2px;
}

.process-media img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-hover);
}

/* ===== News / Picks Grid ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--color-surface);
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
}

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

.news-card__media {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  border-radius: 0;
}

.news-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.news-card:hover .news-card__media img {
  transform: scale(1.03);
}

.news-card__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  box-shadow: 0 2px 8px rgba(46,107,230,0.3);
}

.news-card__body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-card__title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-main);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card__title a {
  color: inherit;
}

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

.news-card__excerpt {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}

.news-card__meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border-light);
  padding-top: 12px;
}

.news-card__meta .meta-tag {
  padding: 2px 10px;
  border-radius: 100px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 12px;
  font-weight: 500;
}

.news-card__meta .meta-link {
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
}

.news-card__meta .meta-link:hover {
  color: var(--color-primary-dark);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: var(--readable-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--color-surface);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.faq-item:hover {
  box-shadow: var(--shadow-hover);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-main);
  gap: 16px;
  user-select: none;
}

.faq-item__question .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 500;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

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

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease;
}

.faq-item__answer-inner {
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--color-text-body);
  line-height: 1.75;
  border-top: 1px solid var(--color-border-light);
  padding-top: 14px;
}

/* ===== CTA Bar ===== */
.cta-bar {
  background: linear-gradient(120deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  border-radius: var(--radius-l);
  padding: 52px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  color: #fff;
  box-shadow: 0 8px 32px rgba(29,79,173,0.30);
}

.cta-bar h2 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  color: #fff;
}

.cta-bar p {
  font-size: 14px;
  color: rgba(255,255,255,0.78);
  margin-top: 4px;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-footer-bg);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 28px;
  margin-top: 0;
}

.footer .container {
  max-width: var(--container-max);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer__brand-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.footer__desc {
  font-size: 14px;
  color: rgba(255,255,255,0.58);
  line-height: 1.7;
  max-width: 320px;
}

.footer__col-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  color: rgba(255,255,255,0.62);
  font-size: 14px;
  transition: color 0.2s;
}

.footer__links a:hover {
  color: #fff;
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
}

.footer__copyright {
  color: rgba(255,255,255,0.6);
}

/* ===== Mobile CTA Bar ===== */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background: #fff;
  border-top: 1px solid var(--color-border-light);
  z-index: 150;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  box-shadow: 0 -2px 12px rgba(31,42,68,0.06);
}

.mobile-cta-bar__status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-main);
  font-weight: 500;
}

.mobile-cta-bar .btn {
  padding: 8px 20px;
  font-size: 14px;
}

/* ===== Responsive ===== */
@media (max-width: 1199px) {
  .sidebar {
    width: 200px;
  }
  .main {
    margin-left: 200px;
  }
  .sidebar__brand-text {
    font-size: 15px;
  }
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .coverage-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 991px) {
  .feature-list {
    grid-template-columns: 1fr;
  }
  .process-wrap {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px;
  }
  .cta-bar {
    padding: 36px 32px;
  }
}

@media (max-width: 768px) {
  body {
    padding-bottom: 60px;
  }
  .sidebar {
    display: none;
  }
  .mobile-header {
    display: flex;
  }
  .mobile-cta-bar {
    display: flex;
  }
  .main {
    margin-left: 0;
    padding-top: 56px;
  }
  .topbar {
    display: none;
  }
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .section {
    padding: 48px 0;
  }
  .section__head h2 {
    font-size: 24px;
  }
  .category-hero {
    padding: 56px 20px 44px;
  }
  .category-hero__title {
    font-size: 28px;
  }
  .category-hero__subtitle {
    font-size: 15px;
  }
  .category-hero__actions {
    flex-direction: column;
    align-items: stretch;
  }
  .category-hero__actions .btn {
    width: 100%;
  }
  .category-hero__stats {
    flex-direction: column;
    gap: 12px;
  }
  .category-hero__stats .stat-item,
  .category-hero__stats .stat-item + .stat-item {
    border-left: none;
    padding-left: 0;
    padding: 4px 0;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .coverage-grid {
    grid-template-columns: 1fr;
  }
  .feature-card {
    padding: 20px;
  }
  .process-wrap {
    padding: 24px 20px;
    gap: 24px;
  }
  .process-content h2 {
    font-size: 22px;
  }
  .cta-bar {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
  }
  .cta-bar .btn {
    width: 100%;
  }
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer__bottom {
    flex-direction: column;
    text-align: center;
    font-size: 12px;
  }
  .footer__brand-name {
    text-align: center;
  }
  .footer__desc {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }
  .footer__col-title {
    text-align: center;
  }
  .footer__links {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 20px;
  }
}

@media (max-width: 520px) {
  .category-hero__badge {
    font-size: 12px;
    padding: 5px 12px;
  }
  .category-hero__title {
    font-size: 24px;
  }
  .category-hero__subtitle {
    font-size: 14px;
  }
  .category-hero__stats strong {
    font-size: 20px;
  }
  .section__head {
    margin-bottom: 32px;
  }
  .section__head h2 {
    font-size: 21px;
  }
  .btn {
    padding: 11px 22px;
    font-size: 14px;
  }
  .news-card__title {
    font-size: 15px;
  }
  .news-card__excerpt {
    font-size: 13px;
  }
  .faq-item__question {
    font-size: 14px;
    padding: 16px 18px;
  }
  .faq-item__answer-inner {
    font-size: 13px;
    padding: 0 18px 16px;
  }
  .mobile-cta-bar__status {
    font-size: 12px;
  }
  .mobile-cta-bar .btn {
    padding: 8px 16px;
    font-size: 13px;
  }
}