/* roulang page: index */
:root {
  --primary: #2E9BD6;
  --primary-strong: #1F84BC;
  --primary-dark: #1F5A7A;
  --accent: #FF8A65;
  --accent-soft: #FFF3ED;
  --blue-soft: #F2F8FC;
  --blue-light: #EDF5FA;
  --ink: #1F2A33;
  --muted: #5A6A76;
  --line: #DCE8EF;
  --white: #ffffff;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow: 0 12px 30px rgb(30 80 110 / 8%);
  --shadow-hover: 0 18px 38px rgb(30 80 110 / 13%);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary-strong); text-decoration: none; transition: color .2s ease, background .2s ease; }
a:hover { color: var(--primary-dark); }
h1, h2, h3, h4 { color: var(--ink); line-height: 1.3; margin: 0 0 14px; font-weight: 700; }
p { margin: 0 0 1rem; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }
.plain-list { list-style: none; margin: 0; padding: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid rgba(46, 155, 214, .35); outline-offset: 2px; border-radius: 6px; }
.grid-container { max-width: 75rem; padding-left: 20px; padding-right: 20px; }
.section { padding: 84px 0; }
.section-subtle { background: var(--blue-soft); }
.section-heading { max-width: 740px; margin-bottom: 42px; }
.section-title { font-size: 34px; line-height: 1.3; font-weight: 800; letter-spacing: .01em; margin-bottom: 12px; }
.section-desc { color: var(--muted); font-size: 16px; margin-top: 10px; line-height: 1.8; }
.section-kicker { display: inline-block; font-size: 12px; letter-spacing: .14em; font-weight: 700; color: var(--primary-strong); text-transform: uppercase; margin-bottom: 12px; padding: 6px 14px; border-radius: 999px; background: rgba(46, 155, 214, .1); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 26px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  background: transparent;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 10px 22px rgb(46 155 214 / 25%); }
.btn-primary:hover { background: var(--primary-strong); color: #fff; transform: translateY(-2px); box-shadow: 0 14px 26px rgb(46 155 214 / 28%); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { border-color: #c5d9e6; background: rgba(255, 255, 255, .82); color: var(--primary-dark); }
.btn-outline:hover { background: var(--blue-soft); border-color: var(--primary); transform: translateY(-2px); }
.btn-sm { min-height: 42px; padding: 0 18px; font-size: 14px; }
.btn-lg { min-height: 52px; padding: 0 30px; font-size: 16px; }
.btn-block { width: 100%; }
.site-header { position: sticky; top: 0; z-index: 80; background: rgba(255, 255, 255, .97); box-shadow: 0 4px 18px rgb(47 91 120 / 7%); border-bottom: 1px solid var(--line); }
.header-main-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; padding: 15px 0 13px; }
.brand-cell { flex-shrink: 0; }
.brand-logo { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { width: 40px; height: 40px; border-radius: 13px; background: linear-gradient(135deg, var(--accent) 0%, #FFBA8A 100%); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 18px; box-shadow: 0 8px 14px rgb(255 138 101 / 30%); }
.brand-name { font-size: 26px; line-height: 1.1; font-weight: 800; color: var(--primary-dark); letter-spacing: .03em; }
.brand-name span { color: var(--accent); }
.search-cell { order: 5; flex: 0 0 100%; margin-top: 4px; }
.search-form {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--blue-light);
  border: 1px solid #d1e2ed;
  border-radius: 50px;
  padding: 4px 6px 4px 20px;
  min-height: 48px;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.search-form:focus-within { background: #fff; border-color: var(--primary); box-shadow: 0 0 0 4px rgb(46 155 214 / 12%); }
.search-form .search-icon { color: var(--muted); font-size: 16px; flex-shrink: 0; }
.search-form input { flex: 1; min-width: 0; border: 0; background: transparent; font-size: 15px; color: var(--ink); height: 38px; outline: none; }
.search-form input::placeholder { color: #8DA0AC; }
.search-submit { border: 0; border-radius: 999px; background: var(--primary); color: #fff; flex-shrink: 0; height: 38px; padding: 0 20px; font-size: 14px; font-weight: 600; box-shadow: 0 4px 10px rgb(46 155 214 / 24%); transition: background .25s, transform .25s; }
.search-submit:hover { background: var(--primary-strong); transform: translateY(-1px); }
.search-submit:active { transform: translateY(0); }
.nav-zone { display: none; margin-left: auto; align-items: center; gap: 8px; }
.nav-link { display: inline-block; padding: 8px 4px; margin-left: 14px; font-weight: 600; color: var(--ink); border-bottom: 2px solid transparent; position: relative; }
.nav-link:first-child { margin-left: 0; }
.nav-link:hover { color: var(--primary-strong); border-bottom-color: var(--primary); }
.nav-link.active { color: var(--primary-dark); border-bottom-color: var(--primary); }
.header-cta { display: none; margin-left: 14px; }
.header-cta .btn { min-height: 42px; }
.nav-toggle { display: inline-flex; align-items: center; justify-content: center; width: 46px; height: 46px; margin-left: auto; border: 1px solid var(--line); background: #fff; border-radius: 12px; font-size: 19px; color: var(--primary-dark); transition: all .2s; }
.nav-toggle:hover { background: var(--blue-light); }
.mobile-nav { display: none; background: #fff; border-top: 1px solid var(--line); padding: 12px 20px 18px; }
.mobile-nav a { display: block; padding: 12px 8px; border-radius: 10px; color: var(--ink); font-weight: 600; }
.mobile-nav a:hover { background: var(--blue-soft); color: var(--primary-dark); }
.mobile-nav .mobile-cta { margin-top: 10px; }
body.nav-open .mobile-nav { display: block; }
@media (min-width: 40em) {
  .nav-zone { display: flex; }
  .nav-toggle { display: none; }
  .header-cta { display: inline-flex; }
  .search-cell { order: 6; }
}
@media (min-width: 64em) {
  .header-main-row { flex-wrap: nowrap; padding: 14px 0; }
  .search-cell { order: 0; flex: 1 1 auto; max-width: 560px; margin: 0 10px 0 28px; }
  .nav-zone { order: 0; flex-shrink: 0; margin-left: 0; }
  .header-cta { order: 0; flex-shrink: 0; margin-left: 20px; }
}
.category-banner {
  position: relative;
  background: url('/assets/images/backpic/back-3.jpg') center 30% / cover no-repeat;
  padding: 86px 0 66px;
}
.category-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(242, 248, 252, .97) 0%, rgba(242, 248, 252, .91) 55%, rgba(242, 248, 252, .72) 100%);
  z-index: 1;
}
.category-banner-inner { position: relative; z-index: 2; }
.breadcrumbs-cat {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 20px;
  list-style: none;
  padding: 0;
}
.breadcrumbs-cat a { color: var(--muted); }
.breadcrumbs-cat a:hover { color: var(--primary-dark); }
.breadcrumbs-cat span { color: #9AAEBA; }
.cat-eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; background: rgba(255,255,255,.88); border: 1px solid var(--line); color: var(--primary-dark); font-size: 13px; font-weight: 700; }
.category-banner h1 { font-size: 42px; font-weight: 800; line-height: 1.24; margin: 18px 0 12px; }
.category-banner .banner-desc { max-width: 48rem; color: var(--muted); font-size: 17px; line-height: 1.85; margin-bottom: 0; }
.banner-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; list-style: none; padding: 0; }
.banner-tags li { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 5px 14px; font-size: 13px; color: var(--primary-dark); box-shadow: 0 4px 8px rgb(30 80 110 / 4%); }
@media (max-width: 39.9375em) {
  .category-banner { padding: 56px 0 40px; }
  .category-banner h1 { font-size: 30px; }
}
.category-note { background: #fff; border-bottom: 1px solid var(--line); padding: 58px 0 36px; }
.note-card { padding-right: 30px; }
.note-card h2 { font-size: 28px; margin-bottom: 10px; }
.note-card p { color: var(--muted); margin-bottom: 0; font-size: 15px; }
.note-list { display: flex; flex-wrap: wrap; gap: 16px 28px; margin-top: 10px; }
.note-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--ink); font-size: 15px; width: calc(50% - 14px); }
.note-list i { color: var(--primary); margin-top: 5px; }
@media (max-width: 39.9375em) {
  .note-list li { width: 100%; }
}
.filter-block { padding: 40px 0 12px; }
.filter-chips { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 0; }
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 8px 18px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  transition: all .2s;
}
.filter-chip:hover { border-color: var(--primary); color: var(--primary-dark); }
.filter-chip.active { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: 0 6px 16px rgb(46 155 214 / 22%); }
.filter-count { margin-left: auto; font-size: 13px; color: var(--muted); }
@media (max-width: 39.9375em) {
  .filter-chips { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; -webkit-overflow-scrolling: touch; }
  .filter-chip { flex-shrink: 0; }
  .filter-count { display: none; }
}
.case-list-section { padding-top: 30px; padding-bottom: 80px; }
.cases-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; align-items: stretch; }
.case-horizontal { grid-column: 1 / -1; display: grid; grid-template-columns: 1.2fr 1fr; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); transition: transform .3s ease, box-shadow .3s ease; }
.case-horizontal:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.case-horizontal.flip .case-h-media { order: 2; }
.case-horizontal.flip .case-h-body { order: 1; }
.case-h-media { min-height: 260px; overflow: hidden; }
.case-h-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-horizontal:hover .case-h-media img { transform: scale(1.03); }
.case-h-body { padding: 42px 38px 34px; display: flex; flex-direction: column; justify-content: center; }
.case-h-body h2 { font-size: 24px; line-height: 1.35; margin-bottom: 12px; }
.case-h-body p { color: var(--muted); margin-bottom: 16px; font-size: 15px; line-height: 1.8; }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; list-style: none; padding: 0; }
.case-tags li { background: var(--blue-soft); color: var(--primary-dark); border-radius: 999px; padding: 4px 12px; font-size: 12px; font-weight: 600; }
.case-tall {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .3s ease, box-shadow .3s ease;
}
.case-tall:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.case-tall-media { overflow: hidden; }
.case-tall-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .5s ease; }
.case-tall:hover .case-tall-media img { transform: scale(1.04); }
.case-tall-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.case-tall-body h3 { font-size: 16px; line-height: 1.45; }
.case-tall-body p { color: var(--muted); font-size: 14px; line-height: 1.7; margin-bottom: 10px; flex: 1; }
.case-more { font-size: 13px; font-weight: 600; color: var(--primary); }
.is-hidden { display: none !important; }
@media (max-width: 63.9375em) {
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .case-horizontal { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 39.9375em) {
  .cases-grid { grid-template-columns: 1fr; }
  .case-horizontal { grid-template-columns: 1fr; }
  .case-horizontal.flip .case-h-media { order: 0; }
  .case-horizontal.flip .case-h-body { order: 0; }
  .case-h-body { padding: 24px 20px; }
  .section { padding: 54px 0; }
}
.audience-band { background: var(--blue-soft); border-top: 1px solid var(--line); }
.audience-card { background: #fff; border-radius: var(--radius-lg); padding: 30px; border: 1px solid var(--line); box-shadow: var(--shadow); height: 100%; transition: all .3s; }
.audience-card:hover { transform: translateY(-4px); border-color: rgba(46,155,214,.35); }
.audience-card i { color: var(--primary); font-size: 24px; margin-bottom: 14px; }
.audience-card h3 { font-size: 18px; margin-bottom: 8px; }
.audience-card p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
.audience-card .you-can { display: inline-block; margin-top: 16px; color: var(--primary-dark); font-size: 14px; font-weight: 600; }
.mini-faq { background: var(--blue-light); }
.faq-single {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 26px 30px;
  border: 1px solid var(--line);
  margin-bottom: 18px;
}
.faq-single h3 { font-size: 16px; margin-bottom: 8px; }
.faq-single p { color: var(--muted); font-size: 14px; margin: 0; line-height: 1.8; }
.cta-band { background: var(--primary-dark); color: #fff; padding: 64px 0; }
.cta-band h2 { color: #fff; font-size: 30px; margin-bottom: 12px; }
.cta-band p { color: rgba(255,255,255,.84); margin-bottom: 24px; font-size: 16px; }
.site-footer { background: #1E2F3A; color: #C4D3DE; padding: 66px 0 24px; margin-top: 0; }
.site-footer a { color: #D3E1EA; }
.site-footer a:hover { color: #fff; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand .brand-name-footer { color: #fff; font-weight: 800; font-size: 24px; }
.footer-desc { font-size: 14px; line-height: 1.8; margin-bottom: 20px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; letter-spacing: .02em; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: #C4D3DE; display: inline-block; padding: 3px 0; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-info { color: #B2C3CF; }
.footer-info li { display: flex; gap: 10px; margin-bottom: 12px; font-size: 14px; }
.footer-info i { color: #9EC6DE; margin-top: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 42px; padding-top: 20px; font-size: 13px; color: #9DB3C2; }
.footer-bottom a { color: #c4d8e6; }

/* roulang page: category1 */
:root {
  --primary: #2E9BD6;
  --primary-strong: #1F84BC;
  --primary-dark: #1F5A7A;
  --accent: #FF8A65;
  --accent-soft: #FFF3ED;
  --blue-soft: #F2F8FC;
  --blue-light: #EDF5FA;
  --ink: #1F2A33;
  --muted: #5A6A76;
  --line: #DCE8EF;
  --white: #ffffff;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow: 0 12px 30px rgb(30 80 110 / 8%);
  --shadow-hover: 0 18px 38px rgb(30 80 110 / 13%);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body { margin: 0; font-family: var(--font-sans); color: var(--ink); background: var(--white); line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--primary-strong); text-decoration: none; transition: color .2s ease, background .2s ease; }
a:hover { color: var(--primary-dark); }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }
plain-list, ul, ol { list-style: none; margin: 0; padding: 0; }
.grid-container { max-width: 75rem; padding-left: 20px; padding-right: 20px; }
.section { padding: 84px 0; }
.section-subtle { background: var(--blue-soft); }
.section-heading { max-width: 780px; margin-bottom: 42px; }
.section-title { font-size: 34px; line-height: 1.3; font-weight: 800; letter-spacing: .01em; margin-bottom: 12px; color: var(--ink); }
.section-desc { color: var(--muted); font-size: 16px; margin-top: 10px; line-height: 1.8; }
.section-kicker { display: inline-block; font-size: 12px; letter-spacing: .14em; font-weight: 700; color: var(--primary-strong); text-transform: uppercase; margin-bottom: 12px; padding: 6px 14px; border-radius: 999px; background: rgba(46,155,214,.1); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 26px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600; line-height: 1; border: 1px solid transparent; background: transparent; transition: all .25s ease; white-space: nowrap; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 10px 22px rgb(46 155 214 / 25%); }
.btn-primary:hover { background: var(--primary-strong); color: #fff; transform: translateY(-2px); box-shadow: 0 14px 26px rgb(46 155 214 / 28%); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { border-color: #c5d9e6; background: rgba(255,255,255,.85); color: var(--primary-dark); }
.btn-outline:hover { background: var(--blue-soft); border-color: var(--primary); transform: translateY(-2px); }
.btn-sm { min-height: 42px; padding: 0 18px; font-size: 14px; }
.btn-lg { min-height: 52px; padding: 0 30px; font-size: 16px; }
.btn-block { width: 100%; }
.chip-tag { display: inline-flex; align-items: center; gap: 6px; background: var(--blue-light); color: var(--primary-dark); font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 999px; line-height: 1.2; border: 1px solid #D9E8F1; }
.chip-tag .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: inline-block; }
.site-header { position: sticky; top: 0; z-index: 80; background: rgba(255,255,255,.97); box-shadow: 0 4px 18px rgb(47 91 120 / 7%); border-bottom: 1px solid var(--line); }
.header-main-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; padding: 15px 0 13px; }
.brand-cell { flex-shrink: 0; }
.brand-logo { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { width: 40px; height: 40px; border-radius: 13px; background: linear-gradient(135deg,var(--accent) 0%,#FFBA8A 100%); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 18px; box-shadow: 0 8px 14px rgb(255 138 101 / 30%); }
.brand-name { font-size: 25px; line-height: 1.1; font-weight: 800; color: var(--primary-dark); letter-spacing: .03em; }
.brand-name span { color: var(--accent); }
.search-cell { order: 5; flex: 0 0 100%; margin-top: 4px; }
.search-form { display: flex; align-items: center; gap: 8px; background: var(--blue-light); border: 1px solid #d1e2ed; border-radius: 50px; padding: 4px 6px 4px 20px; min-height: 48px; transition: border-color .2s, box-shadow .2s, background .2s; }
.search-form:focus-within { background: #fff; border-color: var(--primary); box-shadow: 0 0 0 4px rgb(46 155 214 / 12%); }
.search-form .search-icon { color: var(--muted); font-size: 16px; flex-shrink: 0; }
.search-form input { flex: 1; min-width: 0; border: 0; background: transparent; font-size: 15px; color: var(--ink); height: 38px; outline: none; }
.search-form input::placeholder { color: #8DA0AC; }
.search-submit { border: 0; border-radius: 999px; background: var(--primary); color: #fff; flex-shrink: 0; height: 38px; padding: 0 20px; font-size: 14px; font-weight: 600; box-shadow: 0 4px 10px rgb(46 155 214 / 24%); transition: background .25s, transform .25s; }
.search-submit:hover { background: var(--primary-strong); transform: translateY(-1px); }
.search-submit:active { transform: translateY(0); }
.nav-horizontal { display: flex; align-items: center; order: 3; margin-left: auto; }
.nav-zone { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav-link { display: inline-block; padding: 8px 8px; font-weight: 600; color: var(--ink); border-bottom: 2px solid transparent; transition: color .2s ease,border-color .2s ease; }
.nav-link:hover { color: var(--primary-strong); border-bottom-color: var(--primary); }
.nav-link.active { color: var(--primary-dark); border-bottom-color: var(--primary); }
.header-cta { margin-left: 14px; }
.header-cta .btn { min-height: 42px; }
.nav-toggle { display: none; align-items: center; justify-content: center; width: 46px; height: 46px; margin-left: auto; border: 1px solid var(--line); background: #fff; border-radius: 12px; font-size: 19px; color: var(--primary-dark); transition: all .2s; flex-shrink: 0; }
.nav-toggle:hover { background: var(--blue-light); }
.mobile-nav { display: none; background: #fff; border-top: 1px solid var(--line); padding: 12px 20px 18px; }
.mobile-nav ul { list-style: none; margin: 0; padding: 0; }
.mobile-nav a { display: block; padding: 12px 8px; border-radius: 10px; color: var(--ink); font-weight: 600; }
.mobile-nav a:hover { background: var(--blue-soft); color: var(--primary-dark); }
.mobile-nav .mobile-cta { margin-top: 10px; }
body.nav-open .mobile-nav { display: block; }
body.nav-open .header-main-row { position: relative; }
@media (min-width: 40em) and (max-width: 63.9375em) {
  .nav-toggle { display: none; }
  .nav-horizontal { order: 6; flex: 0 0 100%; margin-left: 0; border-top: 1px solid var(--line); padding-top: 8px; margin-top: 2px; }
  .nav-zone { margin-left: 0; flex-wrap: wrap; }
  .header-cta { margin-left: auto; padding-bottom: 6px; }
}
@media (min-width: 64em) {
  .search-cell { order: 0; flex: 1 1 auto; max-width: 560px; margin: 0 10px 0 28px; }
  .nav-horizontal { order: 0; flex-shrink: 0; margin-left: auto; }
  .nav-zone { margin-left: 0; }
  .header-cta { display: inline-flex; margin-left: 20px; }
  .nav-toggle { display: none; }
  .header-main-row { flex-wrap: nowrap; padding: 14px 0; }
}
@media (max-width: 39.9375em) {
  .nav-toggle { display: inline-flex; }
  .nav-horizontal { display: none; flex: 0 0 100%; width: 100%; flex-direction: column; align-items: stretch; border-top: 1px solid var(--line); padding-top: 10px; margin-top: 4px; }
  body.nav-open .nav-horizontal { display: flex; }
  .nav-zone { flex-direction: column; width: 100%; margin-left: 0; gap: 2px; }
  .nav-link { width: 100%; border: 0; padding: 12px 6px; border-radius: 10px; }
  .nav-link.active { background: var(--blue-soft); }
  .header-cta { margin: 12px 0 0; width: 100%; }
  .header-cta .btn { width: 100%; }
  .search-cell { order: 4; }
}
/* 分类横条 */
.category-banner { position: relative; color: #fff; background-color: #1F5A7A; background-image: linear-gradient(105deg,rgba(16,48,70,.86) 0%,rgba(36,107,153,.64) 58%,rgba(255,138,101,.38) 100%), url('/assets/images/backpic/back-2.jpg'); background-size: cover; background-position: center 24%; padding: 72px 0 62px; }
.breadcrumbs-cat { color: rgba(255,255,255,.72); font-size: 13px; letter-spacing: .02em; margin-bottom: 30px; display: flex; flex-wrap: wrap; gap: 6px; }
.breadcrumbs-cat a { color: #fff; opacity: .85; }
.breadcrumbs-cat a:hover { opacity: 1; text-decoration: underline; }
.breadcrumbs-cat .sep { opacity: .5; }
.category-banner h1 { color: #fff; font-size: 44px; line-height: 1.22; font-weight: 800; margin: 0 0 16px; letter-spacing: .01em; }
.category-banner p.lead { font-size: 17px; max-width: 780px; color: rgba(255,255,255,.88); margin: 0 0 28px; line-height: 1.85; }
.banner-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.banner-actions .btn-outline { border-color: rgba(255,255,255,.55); background: rgba(255,255,255,.12); color: #fff; }
.banner-actions .btn-outline:hover { background: rgba(255,255,255,.2); border-color: #fff; }
/* 分类导语 */
.cat-intro { border-bottom: 1px solid var(--line); }
.intro-lead { font-size: 18px; color: var(--primary-dark); font-weight: 700; margin-bottom: 10px; }
.category-summary-list .item { display: flex; gap: 14px; margin-bottom: 16px; align-items: flex-start; }
.category-summary-list .item-icon { width: 42px; height: 42px; background: var(--blue-light); color: var(--primary-strong); border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; font-size: 17px; flex-shrink: 0; }
.category-summary-list h3 { font-size: 16px; font-weight: 700; margin: 0 0 4px; }
.category-summary-list p { color: var(--muted); font-size: 15px; margin: 0; line-height: 1.7; }
.category-tip-card { background: var(--blue-soft); border: 1px solid #DCEAF3; border-radius: 20px; padding: 24px; position: relative; }
.category-tip-card h3 { font-size: 16px; margin: 0 0 12px; color: var(--primary-dark); display: flex; gap: 8px; align-items: center; }
.category-tip-card p { color: var(--muted); font-size: 14.5px; line-height: 1.8; margin: 0; }
/* 标签筛选题补 */
.case-list { background: #fff; }
.filter-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 34px; }
.filter-label { font-size: 13px; font-weight: 700; color: var(--muted); letter-spacing: .08em; margin-right: 6px; }
.case-filter-btn { display: inline-flex; align-items: center; gap: 7px; padding: 9px 16px; border: 1px solid #DCE7EF; background: #fff; color: var(--muted); border-radius: 999px; font-size: 14px; font-weight: 600; transition: all .2s; }
.case-filter-btn:hover { border-color: var(--primary); color: var(--primary-dark); background: var(--blue-soft); }
.case-filter-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: 0 8px 18px rgb(46 155 214 / 24%); }
/* 横向大卡 */
.feature-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; box-shadow: var(--shadow); margin-bottom: 22px; transition: transform .3s ease, box-shadow .3s ease; }
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.feature-card .grid-x { min-height: 100%; }
.feature-media { position: relative; min-height: 250px; background: #DCE8EF; overflow: hidden; }
.feature-media img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.feature-body { padding: 30px 28px; display: flex; flex-direction: column; justify-content: center; }
.feature-body .meta-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.case-no { font-size: 12px; font-weight: 700; color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 6px 12px; letter-spacing: .03em; }
.feature-body h3 { font-size: 24px; margin: 0 0 12px; line-height: 1.35; font-weight: 800; }
.feature-body p { color: var(--muted); font-size: 15px; margin: 0 0 14px; line-height: 1.8; }
.feature-note { font-size: 13.5px; color: var(--primary-dark); display: inline-flex; align-items: center; gap: 7px; font-weight: 600; }
/* 小卡 */
.case-cover-grid .case-card { margin-bottom: 24px; }
.case-card { background: #fff; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; box-shadow: var(--shadow); transition: all .3s ease; height: 100%; display: flex; flex-direction: column; }
.case-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.case-img { position: relative; overflow: hidden; background: #DCE8EF; aspect-ratio: 4 / 3; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-card:hover .case-img img { transform: scale(1.03); }
.case-body { padding: 18px 17px 19px; display: flex; flex-direction: column; flex: 1; }
.case-body .tags-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.case-body h3 { font-size: 16px; line-height: 1.45; margin: 0 0 8px; font-weight: 700; color: var(--ink); }
.case-body p { color: var(--muted); font-size: 13.5px; line-height: 1.7; margin: 0 0 12px; flex: 1; }
.case-body .card-link { color: var(--primary-strong); font-size: 13.5px; font-weight: 600; display: inline-flex; gap: 8px; align-items: center; }
/* 筛选隐藏 util */
[hidden] { display: none !important; }
/* 流程引导 */
.use-guide { background: var(--blue-soft); }
.step-panel { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 28px 24px; height: 100%; box-shadow: var(--shadow); transition: transform .25s ease, box-shadow .25s ease; }
.step-panel:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.step-num { font-size: 35px; font-weight: 800; line-height: 1; color: var(--accent); letter-spacing: .02em; display: block; margin-bottom: 18px; }
.step-panel h3 { font-size: 18px; margin: 0 0 10px; font-weight: 700; }
.step-panel p { color: var(--muted); font-size: 14.5px; margin: 0; line-height: 1.75; }
/* FAQ */
.faq-section { background: #fff; }
.faq-wrap .accordion-list { list-style: none; margin: 0; padding: 0; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 0; margin-bottom: 14px; overflow: hidden; transition: background .2s ease, border-color .2s ease; }
.faq-item:hover { border-color: #BBD6E6; }
.faq-item.is-open { background: var(--blue-soft); border-color: #BDD9EA; }
.faq-q { width: 100%; background: transparent; border: 0; font-size: 16px; font-weight: 700; color: var(--ink); text-align: left; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 19px 21px; }
.faq-q:focus { outline: 2px solid var(--primary); outline-offset: -2px; }
.faq-icon { width: 30px; height: 30px; min-width: 30px; border-radius: 50%; background: rgba(46,155,214,.14); color: var(--primary-strong); display: inline-flex; align-items: center; justify-content: center; font-size: 14px; transition: transform .25s ease, background .25s ease; }
.faq-item.is-open .faq-icon { transform: rotate(135deg); background: var(--primary); color: #fff; }
.faq-a { display: none; padding: 0 21px 20px; color: var(--muted); font-size: 14.5px; line-height: 1.85; }
.faq-item.is-open .faq-a { display: block; }
/* CTA */
.case-cta { position: relative; border-radius: 26px; overflow: hidden; background: #1B5476; background-image: linear-gradient(100deg, rgba(21,62,86,.92) 0%, rgba(45,121,166,.72) 72%, rgba(255,138,101,.38) 130%), url('/assets/images/backpic/back-5.jpg'); background-size: cover; background-position: center; padding: 56px 48px; color: #fff; }
.case-cta h2 { font-size: 31px; font-weight: 800; margin: 0 0 14px; color: #fff; letter-spacing: .01em; }
.case-cta p { color: rgba(255,255,255,.85); font-size: 16px; max-width: 650px; line-height: 1.85; margin: 0 0 30px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.case-cta .btn-outline { border-color: rgba(255,255,255,.55); color: #fff; background: rgba(255,255,255,.12); margin-right: 0; }
.case-cta .btn-outline:hover { background: rgba(255,255,255,.18); border-color: #fff; }
/* related */
.related-panel { border-top: 1px solid var(--line); }
.related-links { display: flex; flex-wrap: wrap; gap: 12px; }
.related-links a { display: inline-flex; align-items: center; gap: 8px; color: var(--primary-dark); font-weight: 600; background: var(--blue-light); border-radius: 999px; padding: 7px 15px; font-size: 14px; }
.related-links a:hover { background: var(--primary); color: #fff; }
/* footer */
.site-footer { background: #17374D; color: rgba(255,255,255,.8); padding: 70px 0 0; font-size: 14.5px; }
.site-footer h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; }
.site-footer a { color: rgba(255,255,255,.72); }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.brand-name-footer { font-size: 26px; font-weight: 800; color: #fff; }
.brand-name-footer span { color: #FFBA8A; }
.footer-brand .brand-mark { background: linear-gradient(135deg,var(--accent) 0%,#FFBA8A 100%); }
.footer-desc { line-height: 1.9; color: rgba(255,255,255,.68); max-width: 440px; }
.footer-col ul { margin: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-links { list-style: none; padding: 0; }
.footer-links li a::before { content: "›"; margin-right: 5px; color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.16); margin-top: 50px; padding: 23px 0; color: rgba(255,255,255,.5); font-size: 13.5px; }
.footer-bottom .cell { padding-bottom: 3px; }
.footer-info { list-style: none; padding: 0; margin: 0; }
.footer-info li { display: flex; gap: 10px; align-items: center; font-size: 14px; color: rgba(255,255,255,.65); margin-bottom: 11px; }
.footer-info i { color: #FFBA8A; width: 16px; }
.back-top { display: inline-flex; align-items: center; gap: 7px; background: rgba(255,255,255,.1); border-radius: 999px; padding: 6px 14px; font-size: 13px; border: 1px solid rgba(255,255,255,.16); }
.back-top:hover { background: rgba(255,255,255,.16); }
/* responsive */
@media (max-width: 63.9375em) {
  .category-banner { padding: 58px 0 50px; }
  .category-banner h1 { font-size: 36px; }
  .section { padding: 64px 0; }
  .section-title { font-size: 29px; }
  .feature-media img { position: relative; }
  .feature-media { min-height: 200px; }
}
@media (max-width: 39.9375em) {
  .category-banner { padding: 46px 0 40px; }
  .category-banner h1 { font-size: 29px; line-height: 1.28; }
  .category-banner p.lead { font-size: 15px; }
  .section { padding: 52px 0; }
  .section-title { font-size: 25px; }
  .feature-card { border-radius: 16px; }
  .feature-body { padding: 22px 19px; }
  .feature-body h3 { font-size: 21px; }
  .case-card { border-radius: 14px; }
  .case-body { padding: 15px 14px 16px; }
  .filter-row { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 10px; -webkit-overflow-scrolling: touch; }
  .case-filter-btn { flex-shrink: 0; white-space: nowrap; }
  .case-cta { padding: 38px 22px; border-radius: 18px; }
  .case-cta h2 { font-size: 25px; }
  .cta-actions .btn { width: 100%; }
  .footer-bottom { text-align: left; flex-direction: column; }
  .brand-name,.brand-name-footer { font-size: 23px; }
}