/* Product research library and static topic pages. */
html body.qm-product-research { margin: 0; padding-top: 64px !important; background: #fff; color: #1b2025; }
html body.qm-product-research #lcn .lcn-bar { background: #fff !important; color: #1b2025 !important; }
body.qm-product-research #lcn .lcn-logo img { filter: brightness(0) !important; }
#product-research, #pr-main, #pr-footer {
  --pr-ink: #1b2025; --pr-muted: #5b6269; --pr-accent: #b1222a; --pr-line: #d9dde0;
  color: var(--pr-ink); font-family: "QM Universal Sans Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.8; text-transform: none;
}
#product-research *, #pr-main *, #pr-footer * { box-sizing: border-box; }
#product-research[hidden], #product-research [hidden], #pr-main [hidden] { display: none !important; }
body.qm-case-index #case-catalog .pr-case-entry[hidden] { display: none !important; }
body.qm-case-index #case-catalog .pr-case-entry {
  display: inline-flex; align-items: center; min-height: 44px; margin-top: 18px;
  color: #b1222a; font-size: 14px; line-height: 1.6; text-decoration: none;
  border-bottom: 1px solid #b1222a; padding-bottom: 3px;
}
body.qm-case-index #case-catalog .pr-case-entry:focus-visible { outline: 3px solid #b1222a; outline-offset: 5px; }
#product-research :is(h1,h2,h3,p,ol,ul), #pr-main :is(h1,h2,h3,p,ol,ul) { margin: 0; color: inherit; text-transform: none; }
#product-research :is(a,button,input), #pr-main :is(a,button), #pr-footer a { font: inherit; text-transform: none; }
#product-research a, #pr-main a, #pr-footer a { color: inherit; text-decoration: none; }
#product-research :focus-visible, #pr-main :focus-visible, #pr-footer :focus-visible { outline: 3px solid var(--pr-accent); outline-offset: 5px; }
.pr-wrap { width: min(1440px, calc(100% - 112px)); margin-inline: auto; }
#product-research { padding-block: 64px; background: #f6f7f8; scroll-margin-top: 88px; }
#product-research .pr-head { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 28px; }
#product-research .pr-kicker, #pr-main .pr-kicker { font-size: 12px; font-weight: 500; letter-spacing: .05em; color: var(--pr-accent); margin-bottom: 14px; }
#product-research :is(h1,h2) { font-family: "QM Universal Sans Display", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: clamp(30px, 3vw, 46px); font-weight: 400; line-height: 1.35; }
#product-research .pr-intro { margin-top: 16px; max-width: 54em; font-size: 15px; color: var(--pr-muted); }
#product-research .pr-overview { flex: 0 0 auto; border-bottom: 1px solid var(--pr-ink); padding-bottom: 8px; font-size: 14px; }
#product-research .pr-groups { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0; }
#product-research .pr-group { appearance: none; border: 1px solid #ccd1d5; border-radius: 8px; background: #fff; color: var(--pr-ink); padding: 10px 14px; margin: 0; font-size: 13px; line-height: 1.5; min-height: 44px; cursor: pointer; }
#product-research .pr-group span { margin-left: 9px; opacity: .7; font-size: 11px; }
#product-research .pr-group[aria-pressed="true"] { background: var(--pr-ink); color: #fff; border-color: var(--pr-ink); }
#product-research .pr-tools { display: flex; align-items: end; gap: 20px; padding-bottom: 24px; border-bottom: 1px solid var(--pr-line); }
#product-research .pr-search { display: block; flex: 1; max-width: 860px; font-size: 13px; color: var(--pr-muted); }
#product-research .pr-search input { display: block; width: 100%; min-height: 48px; margin-top: 8px; padding: 12px 16px; border: 1px solid #c7cdd2; border-radius: 8px; background: #fff; color: var(--pr-ink); font-size: 15px; box-shadow: none; }
#product-research .pr-reset { border: 0; border-bottom: 1px solid var(--pr-muted); border-radius: 0; background: transparent; padding: 10px 0; color: var(--pr-muted); min-height: 44px; font-size: 13px; cursor: pointer; white-space: nowrap; }
#product-research .pr-status { padding-block: 22px; color: var(--pr-muted); font-size: 13px; }
#product-research .pr-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
#product-research .pr-card { display: flex; flex-direction: column; min-width: 0; padding: 28px; background: #fff; border: 1px solid #dce0e3; border-radius: 14px; }
#product-research .pr-card-meta { display: flex; justify-content: space-between; gap: 14px; margin-bottom: 16px; font-size: 11px; color: var(--pr-muted); }
#product-research .pr-card h3 { font-size: 21px; font-weight: 500; line-height: 1.55; margin-bottom: 14px; }
#product-research .pr-card p { font-size: 14px; color: var(--pr-muted); margin-bottom: 18px; }
#product-research .pr-method-preview { font-size: 13px; color: var(--pr-muted); border-top: 1px solid #e3e6e8; padding-top: 16px; }
#product-research .pr-method-preview strong { display: block; color: var(--pr-ink); font-weight: 500; margin-bottom: 6px; }
#product-research .pr-card-link { display: flex; justify-content: space-between; gap: 16px; margin-top: auto; padding-top: 24px; color: var(--pr-accent); font-size: 14px; }
#product-research .pr-card-link:hover { text-decoration: underline; text-underline-offset: 4px; }
#product-research .pr-empty { padding: 40px 0; color: var(--pr-muted); }
#product-research .pr-more-row { display: flex; justify-content: center; padding-top: 32px; }
#product-research .pr-more { min-height: 48px; padding: 12px 28px; border-radius: 8px; border: 1px solid var(--pr-ink); background: var(--pr-ink); color: #fff; cursor: pointer; font-size: 14px; }
#pr-main .pr-hero { padding-block: 64px; border-bottom: 1px solid var(--pr-line); }
#pr-main .pr-breadcrumb { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; color: var(--pr-muted); font-size: 13px; }
#pr-main .pr-breadcrumb a { text-decoration: underline; text-underline-offset: 4px; }
#pr-main h1 { max-width: 26em; font-family: "QM Universal Sans Display", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: clamp(34px, 3.7vw, 58px); font-weight: 400; line-height: 1.35; }
#pr-main .pr-lead { font-size: 18px; color: var(--pr-muted); max-width: 48em; margin-top: 24px; }
#pr-main .pr-meta { display: flex; gap: 28px; flex-wrap: wrap; font-size: 13px; color: var(--pr-muted); margin-top: 28px; }
#pr-main .pr-section { padding-block: 48px; border-bottom: 1px solid var(--pr-line); }
#pr-main .pr-section h2 { margin-bottom: 24px; font-size: 28px; font-weight: 400; line-height: 1.5; }
#pr-main .pr-process { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); list-style: none; padding: 0; gap: 20px; counter-reset: process; }
#pr-main .pr-process li { counter-increment: process; padding: 28px; border-radius: 14px; background: #f0f2f3; font-size: 16px; }
#pr-main .pr-process li::before { content: "0" counter(process); display: block; color: var(--pr-accent); font-size: 24px; margin-bottom: 20px; }
#pr-main .pr-outcomes { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
#pr-main .pr-outcomes h3 { font-size: 20px; font-weight: 500; margin-bottom: 12px; }
#pr-main .pr-deliverables { padding-left: 20px; font-size: 16px; }
#pr-main .pr-validation { font-size: 16px; color: var(--pr-muted); }
#pr-main .pr-service-links { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
#pr-main .pr-service-links a, #pr-main .pr-primary-link { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 18px; border-radius: 8px; border: 1px solid #cbd0d4; font-size: 14px; }
#pr-main .pr-primary-link { color: #fff; background: var(--pr-accent); border-color: var(--pr-accent); }
#pr-main .pr-related { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
#pr-main .pr-related a { padding: 24px; border: 1px solid var(--pr-line); border-radius: 12px; font-size: 17px; }
#pr-main .pr-related a span { display: block; color: var(--pr-muted); font-size: 11px; margin-bottom: 10px; }
#pr-main .pr-related a:hover { border-color: var(--pr-accent); }
#pr-main .pr-pager { display: flex; justify-content: space-between; gap: 24px; padding-block: 28px; color: var(--pr-muted); font-size: 13px; }
#pr-main .pr-cooperation { padding: 48px 0 64px; }
#pr-main .pr-cooperation p { margin-bottom: 20px; color: var(--pr-muted); }
#pr-footer { padding-block: 42px; background: #161a1e; color: #d4d8dc; }
#pr-footer .pr-wrap { display: flex; align-items: start; justify-content: space-between; gap: 32px; }
#pr-footer strong { display: block; color: #fff; font-size: 22px; font-weight: 500; margin-bottom: 10px; }
#pr-footer p { font-size: 13px; margin: 0; }
#pr-footer nav { display: flex; flex-wrap: wrap; gap: 22px; font-size: 14px; }
@media (max-width: 1100px) {
  .pr-wrap { width: calc(100% - 64px); }
  #product-research .pr-grid, #pr-main .pr-related { grid-template-columns: repeat(2,minmax(0,1fr)); }
  #pr-main .pr-process { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .pr-wrap { width: calc(100% - 40px); }
  #product-research { padding-block: 40px; }
  #product-research .pr-head { flex-direction: column; align-items: start; gap: 20px; }
  #product-research .pr-grid, #pr-main .pr-related, #pr-main .pr-outcomes { grid-template-columns: 1fr; }
  #product-research .pr-card { padding: 24px; }
  #product-research .pr-group { padding: 9px 10px; font-size: 12px; }
  #product-research .pr-tools { gap: 14px; }
  #pr-main .pr-hero { padding-block: 36px; }
  #pr-main .pr-section { padding-block: 32px; }
  #pr-main .pr-pager, #pr-footer .pr-wrap { flex-direction: column; }
}