/* Knowledge centre: Chinese reading rhythm, warm brand accents and clear category cards. */
.knowledge-page {
  --knowledge-ink: #202631;
  --knowledge-muted: #8b929e;
  --knowledge-line: #edf0f3;
  --knowledge-red: #df3036;
  --knowledge-wash: #fff1f2;
  background: #f6f7f9;
  color: var(--knowledge-ink);
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
}
.knowledge-page .knowledge-main { width: calc(100% - 96px); max-width: 1320px; min-width: 1000px; margin: 0 auto; padding: 26px 0 64px; }
.knowledge-page .knowledge-main :where(h1, h2, p) { margin: 0; }
.knowledge-hero { position: relative; display: flex; align-items: center; min-height: 230px; overflow: hidden; padding: 32px 42px; border: 1px solid #f5e2dd; border-radius: 14px; background: linear-gradient(110deg, #fff9f6 0%, #fff3ee 55%, #f5d9d2 100%); }
.knowledge-hero-copy { position: relative; z-index: 1; width: calc(100% - 390px); }
.knowledge-page .knowledge-hero h1 { color: #1e2530; font-size: 36px; font-weight: 700; line-height: 1.4; letter-spacing: .4px; overflow-wrap: anywhere; }
.knowledge-page .knowledge-description { margin-top: 12px; color: #7c7f87; font-size: 15px; line-height: 1.9; white-space: pre-line; overflow-wrap: anywhere; }
.knowledge-page .knowledge-summary { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 22px; color: #7d818c; font-size: 14px; line-height: 1.6; }
.knowledge-hero-art { position: absolute; right: 10px; top: 50%; width: 460px; height: 276px; object-fit: contain; transform: translateY(-50%); pointer-events: none; user-select: none; }
.knowledge-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); align-items: start; gap: 24px; margin-top: 24px; }
.knowledge-directory { min-width: 0; position: sticky; top: 24px; }
.knowledge-directory-inner { overflow: hidden; padding: 20px 8px 0; border: 1px solid #e9ecf0; border-radius: 12px; background: #fff; box-shadow: 0 3px 14px #1b273605; }
.knowledge-page .knowledge-directory-title { padding: 0 12px 18px; color: var(--knowledge-ink); font-size: 17px; font-weight: 600; line-height: 1.6; }
.knowledge-directory nav { display: grid; gap: 6px; max-height: calc(100vh - 230px); overflow: auto; scrollbar-width: thin; }
.knowledge-directory nav a { position: relative; display: grid; grid-template-columns: 20px minmax(0, 1fr) max-content; align-items: center; gap: 12px; padding: 16px 12px; border-radius: 6px; color: #555e6b; font-size: 15px; line-height: 1.7; text-decoration: none; transition: color .18s, background-color .18s; }
.knowledge-directory nav a > i { font-size: 20px; line-height: 1; }
.knowledge-directory-name { min-width: 0; overflow-wrap: anywhere; }
.knowledge-directory nav small { color: #9ca3ae; font-size: 12px; font-weight: 400; font-variant-numeric: tabular-nums; }
.knowledge-directory nav a:hover { color: var(--knowledge-red); background: #fff8f8; }
.knowledge-directory nav a[aria-current] { color: var(--knowledge-red); background: var(--knowledge-wash); font-weight: 600; }
.knowledge-directory nav a[aria-current]::before { position: absolute; left: 0; top: 8px; bottom: 8px; width: 3px; border-radius: 0 2px 2px 0; background: var(--knowledge-red); content: ""; }
.knowledge-directory nav a[aria-current] small { color: #b9777b; }
.knowledge-back { display: flex; align-items: center; gap: 12px; margin: 22px 12px 0; padding: 20px 0; border-top: 1px solid var(--knowledge-line); color: #7d8694; font-size: 13px; line-height: 1.7; text-decoration: none; transition: color .18s; }
.knowledge-back i { font-size: 16px; }
.knowledge-back:hover { color: var(--knowledge-red); }
.knowledge-content { min-width: 0; }
.knowledge-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 24px; min-height: 40px; margin-bottom: 16px; }
.knowledge-page .knowledge-toolbar h2 { flex-shrink: 0; color: var(--knowledge-ink); font-size: 20px; font-weight: 600; line-height: 1.5; }
.knowledge-toolbar h2 small { margin-left: 12px; color: #9299a5; font-size: 13px; font-weight: 400; white-space: nowrap; }
.knowledge-toolbar form { display: flex; align-items: center; gap: 10px; min-width: 0; width: 344px; height: 40px; }
.knowledge-toolbar form > i { z-index: 1; margin-right: -40px; margin-left: 14px; color: #939baa; font-size: 16px; pointer-events: none; }
.knowledge-toolbar input { min-width: 0; width: 100%; height: 40px; padding: 0 12px 0 40px; border: 1px solid #dde2e9; border-radius: 7px; outline: none; background: #fff; color: var(--knowledge-ink); font-family: inherit; font-size: 14px; line-height: 1.5; transition: border-color .18s, box-shadow .18s; }
.knowledge-toolbar input::placeholder { color: #a0a7b3; }
.knowledge-toolbar input:focus { border-color: var(--knowledge-red); box-shadow: 0 0 0 3px #df30360a; }
.knowledge-toolbar button { flex: 0 0 76px; align-self: stretch; border: 1px solid var(--knowledge-red); border-radius: 7px; background: var(--knowledge-red); color: #fff; font-family: inherit; font-size: 14px; font-weight: 500; line-height: 1.5; cursor: pointer; box-shadow: 0 3px 8px #df303610; transition: background-color .18s, border-color .18s; }
.knowledge-toolbar button:hover { background: #c9282f; border-color: #c9282f; }
.knowledge-groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 16px; }
.knowledge-group { min-width: 0; overflow: hidden; padding: 20px 20px 8px; border: 1px solid #e9ecf0; border-radius: 12px; background: #fff; box-shadow: 0 3px 14px #1b273605; scroll-margin-top: 24px; transition: border-color .18s, box-shadow .18s; }
.knowledge-group:hover { border-color: #e5d4d6; box-shadow: 0 6px 20px #1b273607; }
.knowledge-group > header { display: flex; align-items: center; gap: 16px; min-width: 0; padding-bottom: 20px; border-bottom: 1px solid var(--knowledge-line); }
.knowledge-category-icon { display: flex; flex: 0 0 60px; align-items: center; justify-content: center; width: 60px; height: 60px; border-radius: 9px; background: #ffedef; color: var(--knowledge-red); font-size: 28px; line-height: 1; }
.knowledge-group > header > div { min-width: 0; }
.knowledge-page .knowledge-group h2 { color: var(--knowledge-ink); font-size: 20px; font-weight: 600; line-height: 1.5; overflow-wrap: anywhere; }
.knowledge-page .knowledge-group header p { margin-top: 4px; color: #969daa; font-size: 13px; line-height: 1.5; }
.knowledge-group ul { margin: 0; padding: 0; list-style: none; }
.knowledge-group li { min-width: 0; }
.knowledge-group li + li { border-top: 1px solid #f1f3f5; }
.knowledge-group li a { display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 12px 1px; color: #4e5867; font-size: 15px; font-weight: 400; line-height: 1.6; text-decoration: none; transition: color .18s; }
.knowledge-group li a > span { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.knowledge-article-icon { flex: 0 0 16px; color: var(--knowledge-red); font-size: 15px; line-height: 1; }
.knowledge-article-arrow { flex: 0 0 12px; color: #a6adb8; font-size: 12px; line-height: 1; transition: transform .18s, color .18s; }
.knowledge-group li a:hover { color: var(--knowledge-red); }
.knowledge-group li a:hover .knowledge-article-arrow { color: var(--knowledge-red); transform: translateX(3px); }
.knowledge-page .knowledge-search-result { display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px; margin: -2px 0 16px; color: #8b929e; font-size: 13px; line-height: 1.8; }
.knowledge-search-result a { color: var(--knowledge-red); text-decoration: none; }
.knowledge-empty { padding: 64px 24px; border: 1px solid #e9ecf0; border-radius: 12px; background: #fff; text-align: center; color: var(--knowledge-muted); }
.knowledge-empty > i { color: #dca5a8; font-size: 36px; }
.knowledge-page .knowledge-empty h2 { margin: 18px 0 10px; color: var(--knowledge-ink); font-size: 20px; font-weight: 600; }
.knowledge-page .knowledge-empty p { margin-bottom: 22px; color: var(--knowledge-muted); font-size: 14px; line-height: 1.9; }
.knowledge-empty a { display: inline-flex; gap: 12px; align-items: center; color: var(--knowledge-red); font-size: 14px; text-decoration: none; }
.knowledge-page .knowledge-main :is(a, button):focus-visible { outline: 2px solid var(--knowledge-red); outline-offset: 3px; }
/* Reserve a side lane for the existing contact rail instead of covering article rows. */
@media (max-width: 1679px) {
  .knowledge-page .knowledge-main { width: calc(100% - 112px); min-width: 0; padding-right: 64px; }
  .knowledge-page #contact-dock { top: calc(50% - 171px); right: 16px; bottom: auto; flex-direction: column; width: 88px; padding: 9px 7px 8px; }
  .knowledge-page #contact-dock > :is(button, a) { flex-direction: column; min-height: 80px; gap: 9px; padding: 12px 0; }
  .knowledge-page #contact-dock > :is(button, a) > i { font-size: 25px; }
  .knowledge-page #contact-dock > :is(button, a).contact-dock-service { min-height: 78px; margin: 4px 0 0; }
  .knowledge-page #contact-dock > :is(button, a):not(.contact-dock-service):not(:has(+ .contact-dock-service)):not(:last-child)::after { width: 32px; height: 0; top: auto; right: auto; bottom: 0; left: calc(50% - 16px); border-left: 0; border-bottom: 1px solid #eeecea; }
}
@media (max-width: 1259px) {
  .knowledge-page .knowledge-main { width: calc(100% - 64px); padding-right: 88px; }
  .knowledge-hero { padding-left: 32px; }
  .knowledge-hero-copy { width: calc(100% - 340px); }
  .knowledge-hero-art { width: 400px; right: -4px; }
  .knowledge-layout { grid-template-columns: 210px minmax(0, 1fr); gap: 20px; }
  .knowledge-directory nav a { gap: 8px; padding-left: 10px; padding-right: 10px; font-size: 13px; }
  .knowledge-group { padding-left: 16px; padding-right: 16px; }
  .knowledge-group li a { gap: 9px; font-size: 14px; }
  .knowledge-toolbar form { width: 310px; }
}
@media (prefers-reduced-motion: reduce) {
  .knowledge-page .knowledge-main *, .knowledge-page .knowledge-main *::before { transition: none; }
}