/* Homepage design system. Keep research pages and reading layouts independent. */
body[data-page="index"] {
  --home-ink: #153c56;
  --home-text: #405b70;
  --home-muted: #60768a;
  --home-accent: #075e9c;
  --home-line: #d7e3ec;
  --home-surface: #f4f8fb;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.8;
  color: var(--home-ink);
}
body[data-page="index"] .site-header { height: auto; min-height: 112px; padding-block: 22px; }
body[data-page="index"] .site-brand strong { font-weight: 600; }
body[data-page="index"] .site-brand small { font-size: 8px; letter-spacing: .6px; color: #476b86; }
body[data-page="index"] .brand-tagline { font-size: 18px; line-height: 1.6; font-weight: 600; }
body[data-page="index"] .brand-tagline small { font-size: 12px; letter-spacing: 0; color: var(--home-muted); }
body[data-page="index"] .header-actions { font-size: 12px; }
body[data-page="index"] .main-nav a { font-size: 14px; padding: 15px 6px; }
body[data-page="index"] main > section:not([class^="observation-"]) { margin: 40px 0 0; padding: 0; border-top: 0; }
body[data-page="index"] main > .home-showcase { margin-top: 32px; gap: 26px; }
body[data-page="index"] :is(.showcase-head, .section-title) {
  display: flex; align-items: baseline; justify-content: space-between;
  flex-wrap: wrap; gap: 8px 20px; margin: 0 0 20px; padding: 0 0 12px;
  border-bottom: 1px solid #adc3d3;
}
body[data-page="index"] :where(main h1, main h2) {
  display: block; margin: 0; font-size: 22px; line-height: 1.5;
  font-weight: 600; letter-spacing: 0; color: var(--home-ink);
}
body[data-page="index"] :is(.showcase-head, .section-title, .membership-promo-header) :is(h1, h2) em {
  display: inline; margin-left: 8px; font-size: 13px; line-height: 1.6;
  font-weight: 400; font-style: normal; letter-spacing: .15px; color: var(--home-muted);
}
body[data-page="index"] :is(.section-title > span, .section-title > a, .thematic-home-more) {
  font-size: 13px; line-height: 1.7; color: var(--home-muted);
}
body[data-page="index"] :is(.section-title > a, .thematic-home-more) { color: var(--home-accent); }
body[data-page="index"] :where(main h3) { font-size: 18px; line-height: 1.65; font-weight: 600; color: var(--home-ink); }
body[data-page="index"] :is(.topic-card, .public-preview-card, .home-intro-card) {
  border: 1px solid var(--home-line); border-radius: 6px; background: #fff;
}
body[data-page="index"] :is(.topic-card, .public-preview-card, .home-intro-card, .customer-value-card) {
  transition: border-color .18s ease, background-color .18s ease;
}
body[data-page="index"] :is(.topic-card:hover, .public-preview-card:hover) { border-color: #91b4cc; background: #fbfdff; }
body[data-page="index"] .showcase-carousel { position: relative; }
body[data-page="index"] .home-showcase .showcase-head { margin-bottom: 14px; }
body[data-page="index"] .carousel-stage { border-radius: 6px; }
body[data-page="index"] .slide-caption { bottom: 26px; }
body[data-page="index"] .slide-caption strong { font-size: 21px; line-height: 1.65; font-weight: 600; }
body[data-page="index"] .slide-caption small { font-size: 12px; line-height: 1.7; letter-spacing: .2px; color: #e0edf5; }
body[data-page="index"] .carousel-dots { bottom: 10px; right: 20px; gap: 2px; }
body[data-page="index"] .carousel-dot { position: relative; width: 28px; height: 28px; min-width: 28px; min-height: 28px; padding: 0; display: block; border-radius: 0; background: transparent; }
body[data-page="index"] .carousel-dot::after { content: ""; position: absolute; inset: 10px; border-radius: 50%; background: #a3b7c8; }
body[data-page="index"] .carousel-dot.active::after { background: #fff; }
body[data-page="index"] .hot-item > a { padding: 10px 6px; font-size: 14px; line-height: 1.6; gap: 10px; color: var(--home-text); }
body[data-page="index"] .hot-item time { font-size: 12px; color: var(--home-muted); }
body[data-page="index"] .hot-item i { font-size: 11px; padding: 2px 6px; line-height: 1.6; color: #466b86; background: #edf3f8; }
body[data-page="index"] .hot-pagination { display: flex; gap: 6px; align-self: center; }
body[data-page="index"] .hot-page { min-width: 30px; padding: 2px 6px; font-size: 12px; line-height: 1.8; border-radius: 4px; border: 1px solid var(--home-line); color: var(--home-muted); background: #fff; }
body[data-page="index"] .hot-page[aria-pressed="true"] { border-color: #9ab8cd; color: var(--home-accent); background: #edf4f9; }
body[data-page="index"] .thematic-home-list { column-gap: 26px; }
body[data-page="index"] .thematic-home-list a { font-size: 14px; line-height: 1.8; padding: 12px 6px; color: var(--home-text); }
body[data-page="index"] .thematic-home-list time { font-size: 12px; color: var(--home-muted); }
body[data-page="index"] .public-discovery-note { font-size: 14px; line-height: 1.8; color: var(--home-text); margin-bottom: 20px; }
body[data-page="index"] .public-preview-grid { gap: 18px; }
body[data-page="index"] .public-preview-card { padding: 22px; }
body[data-page="index"] .public-preview-meta { font-size: 12px; color: var(--home-muted); }
body[data-page="index"] .public-preview-card h3 { margin-bottom: 12px; }
body[data-page="index"] .public-preview-intro { font-size: 14px; line-height: 1.85; color: var(--home-text); }
body[data-page="index"] .topic-cards { gap: 18px; }
body[data-page="index"] .topic-card-body { padding: 18px 20px 20px; }
body[data-page="index"] .topic-number { font-size: 12px; color: var(--home-muted); }
body[data-page="index"] .topic-card h3 { margin: 8px 0; }
body[data-page="index"] .topic-card p { font-size: 14px; line-height: 1.8; color: var(--home-text); }
body[data-page="index"] .research-entries .customer-value-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
body[data-page="index"] .research-entries .customer-value-card { padding: 22px; border: 1px solid var(--home-line); border-radius: 6px; }
body[data-page="index"] .research-entries h3 { margin-bottom: 10px; }
body[data-page="index"] .research-entries .customer-value-card p { font-size: 14px; line-height: 1.8; color: var(--home-text); }
body[data-page="index"] .content-note { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 18px 0 0; padding: 14px 0 0; border: 0; background: transparent; font-size: 13px; color: var(--home-muted); }
body[data-page="index"] .content-note a { color: var(--home-accent); }
body[data-page="index"] :is(.home-intro-heading, .customer-value-heading) { max-width: none; margin: 0 0 22px; }
body[data-page="index"] :is(.home-intro-heading > p, .customer-value-heading > p) { max-width: 900px; font-size: 14px; line-height: 1.85; color: var(--home-text); }
body[data-page="index"] .home-intro-grid { gap: 18px; }
body[data-page="index"] .home-intro-card > img { aspect-ratio: 16/9; border-radius: 5px 5px 0 0; }
body[data-page="index"] .home-intro-card-body { padding: 22px; }
body[data-page="index"] .home-intro-step { color: var(--home-muted); font-size: 12px; letter-spacing: 0; }
body[data-page="index"] .home-intro-card h3 { margin: 12px 0; }
body[data-page="index"] .home-intro-card p { font-size: 14px; line-height: 1.85; color: var(--home-text); margin-bottom: 18px; }
body[data-page="index"] :is(.home-intro-link, .customer-value-link) { font-size: 14px; color: var(--home-accent); min-height: 40px; padding: 7px 0; gap: 10px; }
body[data-page="index"] .customer-value-grid { gap: 18px; }
body[data-page="index"] .customer-value-card { padding: 24px; border: 1px solid var(--home-line); border-radius: 6px; }
body[data-page="index"] .customer-value-audience { font-size: 12px; line-height: 1.8; color: var(--home-muted); margin-bottom: 10px; letter-spacing: 0; }
body[data-page="index"] .customer-value-card h3 { margin-bottom: 12px; }
body[data-page="index"] .customer-value-story { max-width: none; font-size: 14px; line-height: 1.85; color: var(--home-text); margin-bottom: 16px; }
body[data-page="index"] main > .membership-promo { padding: 28px; border: 1px solid var(--home-line); border-radius: 6px; background: var(--home-surface); color: var(--home-ink); }
body[data-page="index"] .membership-promo::before { display: none; }
body[data-page="index"] .membership-promo-header { align-items: center; gap: 20px; margin-bottom: 22px; }
body[data-page="index"] .membership-promo-header h2 { display: block; }
body[data-page="index"] .membership-promo-header p { font-size: 14px; line-height: 1.85; margin-top: 10px; color: var(--home-text); }
body[data-page="index"] .membership-promo-register { font-size: 14px; font-weight: 600; border-radius: 4px; min-height: 44px; padding: 9px 18px; background: #153c56; color: #fff; }
body[data-page="index"] .membership-promo-register:hover { background: #075e9c; color: #fff; }
body[data-page="index"] .membership-promo-grid { gap: 18px; }
body[data-page="index"] .membership-promo-card { min-height: 226px; padding: 22px; border: 1px solid var(--home-line); border-radius: 6px; background: #fff; }
body[data-page="index"] .membership-promo-card[data-tier="vvip"] { border-color: #9ab8cd; }
body[data-page="index"] .membership-promo-index { font-style: normal; font-family: inherit; font-size: 12px; line-height: 1.8; font-weight: 400; color: var(--home-muted); }
body[data-page="index"] .membership-promo-card .inline-heading { margin: 8px 0 10px; }
body[data-page="index"] .membership-promo-tier { font-size: 11px; font-weight: 500; letter-spacing: .5px; color: var(--home-muted); }
body[data-page="index"] .membership-promo-card p { font-size: 14px; line-height: 1.85; color: var(--home-text); max-width: none; }
body[data-page="index"] :is(.membership-promo-card a, .membership-promo-bottom a) { font-size: 14px; font-weight: 600; color: var(--home-accent); }
body[data-page="index"] :is(.membership-promo-card a:hover, .membership-promo-bottom a:hover) { color: #003e6b; text-decoration: underline; }
body[data-page="index"] .membership-promo-bottom { padding-top: 20px; }
body[data-page="index"] .membership-promo-bottom p { font-size: 13px; color: var(--home-muted); }
body[data-page="index"] .home-data-service p { font-size: 14px; line-height: 1.85; margin: 12px 0; color: var(--home-text); max-width: 1000px; }
body[data-page="index"] .home-data-service .service-home-topics { font-size: 13px; color: var(--home-muted); }
body[data-page="index"] .service-home-links a { display: inline-flex; align-items: center; min-height: 40px; padding: 7px 0; font-size: 14px; color: var(--home-accent); font-weight: 600; }
body[data-page="index"] main > .home-wechat {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 24px 32px; border: 1px solid var(--home-line); border-radius: 6px;
  background: var(--home-surface);
}
body[data-page="index"] .home-wechat-copy { min-width: 0; }
body[data-page="index"] .home-wechat-copy p { margin-top: 12px; font-size: 14px; color: var(--home-text); }
body[data-page="index"] .home-wechat-code { display: block; flex: 0 0 172px; width: 172px; height: 172px; background: #fff; }
body[data-page="index"] footer { margin-top: 40px; }
body[data-page="index"] .footer-top p { font-size: 13px; }
body[data-page="index"] .footer-top a { font-size: 13px; }
body[data-page="index"] .footer-bottom { font-size: 12px; }
body[data-page="index"] main a:hover { color: var(--home-accent); }
body[data-page="index"] .slide-caption a:hover { color: #fff; }
body[data-page="index"] a:focus-visible, body[data-page="index"] button:focus-visible { outline: 2px solid #075e9c; outline-offset: 4px; }
@media (max-width: 1100px) {
  body[data-page="index"] .site-header { gap: 14px; padding-block: 20px; }
  body[data-page="index"] .brand-tagline { font-size: 16px; }
}
@media (max-width: 900px) {
  body[data-page="index"] .research-entries .customer-value-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  body[data-page="index"] .home-intro-grid { gap: 14px; }
  body[data-page="index"] .home-intro-card-body { padding: 18px; }
  body[data-page="index"] main > .membership-promo { padding: 24px; }
  body[data-page="index"] .membership-promo-grid { gap: 14px; }
  body[data-page="index"] .membership-promo-card { padding: 18px; }
}
@media (max-width: 760px) {
  body[data-page="index"] .site-header { min-height: 0; padding-block: 18px; gap: 12px; }
  body[data-page="index"] .site-brand strong { display: block; font-size: 19px; }
  body[data-page="index"] .site-brand small { display: block; font-size: 8px; white-space: normal; margin-left: 0; letter-spacing: .2px; }
  body[data-page="index"] .header-actions { font-size: 11px; max-width: 76px; }
  body[data-page="index"] .brand-tagline { font-size: 14px; }
  body[data-page="index"] .brand-tagline small { font-size: 11px; }
  body[data-page="index"] .main-nav a { font-size: 13px; padding: 12px 3px; }
  body[data-page="index"] main > section { margin-top: 32px; }
  body[data-page="index"] main > .home-showcase { margin-top: 26px; gap: 26px; }
  body[data-page="index"] :where(main h1, main h2) { font-size: 20px; }
  body[data-page="index"] :is(.showcase-head, .section-title, .membership-promo-header) :is(h1, h2) em { font-size: 12px; margin-left: 6px; }
  body[data-page="index"] main h3 { font-size: 17px; }
  body[data-page="index"] :is(.showcase-head, .section-title) { gap: 6px 12px; margin-bottom: 18px; padding-bottom: 10px; }
  body[data-page="index"] .slide-caption { left: 18px; right: 18px; bottom: 30px; }
  body[data-page="index"] .slide-caption strong { font-size: 18px; line-height: 1.6; }
  body[data-page="index"] .slide-caption small { font-size: 11px; }
  body[data-page="index"] .public-preview-card { padding: 20px; }
  body[data-page="index"] .topic-cards { gap: 14px; }
  body[data-page="index"] .topic-card-body { padding: 14px; }
  body[data-page="index"] .topic-card p { font-size: 13px; }
  body[data-page="index"] .home-intro-grid { gap: 18px; }
  body[data-page="index"] .home-intro-card-body { padding: 20px; }
  body[data-page="index"] .customer-value-card { padding: 20px; }
  body[data-page="index"] main > .membership-promo { padding: 20px; }
  body[data-page="index"] .membership-promo-header { gap: 18px; align-items: flex-start; }
  body[data-page="index"] .membership-promo-card { min-height: 0; padding: 20px; }
  body[data-page="index"] .membership-promo-bottom { align-items: flex-start; }
}
@media (max-width: 520px) {
  body[data-page="index"] .research-entries .customer-value-grid { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  body[data-page="index"] .site-brand { gap: 7px; }
  body[data-page="index"] .site-brand strong { font-size: 18px; }
}
@media (max-width: 680px) {
  body[data-page="index"] main > .home-wechat { flex-direction: column; gap: 20px; padding: 24px 20px; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  body[data-page="index"] .carousel-slide, body[data-page="index"] .slide-bg, body[data-page="index"] .hot-item.on { transition: none; animation: none; }
}

/* Four remaining public previews fill the content width. */
body[data-page="index"] .public-preview-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:600px){body[data-page="index"] .public-preview-grid{grid-template-columns:minmax(0,1fr)}}