:root {
  --knowledge-ink: #071a33;
  --knowledge-blue: #0869c9;
  --knowledge-sky: #dff1ff;
  --knowledge-paper: #fffefd;
  --knowledge-mist: #f3f7fb;
  --knowledge-line: rgba(7, 26, 51, .12);
  --knowledge-muted: #5c6a7a;
  --knowledge-coral: #f47f68;
}

html { scroll-behavior: smooth; }
body.knowledge-page,
body.knowledge-article-page { background: var(--knowledge-mist); color: var(--knowledge-ink); }
.knowledge-page main,
.knowledge-article-page main { overflow: hidden; padding-top: 76px; }
.knowledge-page .site-footer,
.knowledge-article-page .site-footer { position: relative; inset: auto; z-index: 1; }
.knowledge-page #primary-nav,
.knowledge-article-page #primary-nav { display: flex; gap: clamp(10px, 1.5vw, 24px); }
.knowledge-breadcrumb { display: flex; align-items: center; gap: 10px; padding-top: 28px; padding-bottom: 18px; color: #718094; font-size: 14px; }
.knowledge-breadcrumb a { color: inherit; text-decoration: none; }
.knowledge-breadcrumb a:hover { color: var(--knowledge-blue); }
.knowledge-kicker { color: var(--knowledge-coral); font-size: 12px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }

.knowledge-hero { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(330px, .55fr); min-height: 550px; border: 1px solid var(--knowledge-line); border-radius: 32px; overflow: hidden; background: var(--knowledge-paper); box-shadow: 0 24px 80px rgba(7, 26, 51, .08); }
.knowledge-intro { position: relative; display: flex; flex-direction: column; justify-content: center; padding: clamp(50px, 7vw, 108px); background: linear-gradient(135deg, #071a33 0%, #0c315b 57%, #0b5fa4 100%); color: #fff; isolation: isolate; }
.knowledge-intro::before { content: ""; position: absolute; inset: 0; z-index: -1; opacity: .4; background: radial-gradient(circle at 78% 16%, rgba(110, 207, 255, .35), transparent 26%), repeating-linear-gradient(122deg, transparent 0 54px, rgba(255,255,255,.035) 55px 56px); }
.knowledge-intro::after { content: ""; position: absolute; width: 280px; height: 280px; right: -130px; bottom: -130px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; box-shadow: 0 0 0 42px rgba(255,255,255,.025), 0 0 0 84px rgba(255,255,255,.018); }
.knowledge-intro h1 { max-width: 730px; margin: 24px 0 22px; font-size: clamp(42px, 5.2vw, 76px); line-height: 1.08; letter-spacing: -.055em; font-weight: 580; }
.knowledge-intro h1 { color: #fff; background: none; background-clip: border-box; -webkit-text-fill-color: currentColor; }
.knowledge-intro > p { max-width: 690px; margin: 0; color: rgba(255,255,255,.76); font-size: clamp(16px, 1.55vw, 20px); line-height: 1.8; }
.knowledge-prompts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 44px; }
.knowledge-prompts a { padding: 11px 15px; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; color: rgba(255,255,255,.88); background: rgba(255,255,255,.06); text-decoration: none; font-size: 13px; transition: .25s ease; }
.knowledge-prompts a:hover { color: #071a33; background: #fff; transform: translateY(-2px); }

.knowledge-compass { position: relative; padding: 42px 40px; background: linear-gradient(160deg, #eef8ff 0%, #fff 60%, #fff8f4 100%); }
.compass-index { display: block; color: #75859a; font-size: 12px; font-weight: 800; letter-spacing: .13em; }
.compass-mark { position: relative; width: 152px; aspect-ratio: 1; margin: 40px auto 50px; border: 1px solid rgba(8, 105, 201, .2); border-radius: 50%; }
.compass-mark::before,
.compass-mark::after { content: ""; position: absolute; inset: 50% auto auto 50%; background: rgba(8, 105, 201, .25); transform: translate(-50%, -50%); }
.compass-mark::before { width: 1px; height: 190px; }
.compass-mark::after { width: 190px; height: 1px; }
.compass-mark i { position: absolute; inset: 18px; border: 1px solid rgba(8, 105, 201, .18); border-radius: 50%; }
.compass-mark i:nth-child(2) { inset: 44px; background: #0a6dca; border: 8px solid #fff; box-shadow: 0 12px 30px rgba(8,105,201,.22); }
.compass-mark i:nth-child(3) { inset: 66px; background: var(--knowledge-coral); border: 0; }
.knowledge-compass ol { list-style: none; margin: 0; padding: 0; }
.knowledge-compass li { display: grid; grid-template-columns: 95px 1fr; gap: 14px; padding: 16px 0; border-top: 1px solid var(--knowledge-line); }
.knowledge-compass li b { font-size: 14px; }
.knowledge-compass li span { color: var(--knowledge-muted); font-size: 13px; line-height: 1.5; }

.knowledge-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 24px; }
.knowledge-tabs.faq-knowledge-tabs { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.knowledge-tabs a { position: relative; min-height: 150px; padding: 28px 30px; border: 1px solid var(--knowledge-line); border-radius: 22px; background: rgba(255,255,255,.82); color: var(--knowledge-ink); text-decoration: none; transition: .25s ease; }
.knowledge-tabs a::after { content: "↗"; position: absolute; right: 24px; top: 24px; color: #7c8a9b; }
.knowledge-tabs span { display: block; margin-bottom: 28px; color: var(--knowledge-coral); font-size: 11px; font-weight: 800; letter-spacing: .13em; }
.knowledge-tabs b { display: block; margin-bottom: 9px; font-size: 20px; }
.knowledge-tabs small { color: var(--knowledge-muted); font-size: 13px; }
.knowledge-tabs a:hover { transform: translateY(-3px); border-color: rgba(8,105,201,.3); box-shadow: 0 18px 44px rgba(7,26,51,.07); }
.knowledge-tabs a[aria-current="page"] { color: #fff; border-color: #0b5fa4; background: linear-gradient(135deg, #0c315b, #0875d1); box-shadow: 0 20px 48px rgba(8,105,201,.18); }
.knowledge-tabs a[aria-current="page"] span { color: #ffac9c; }
.knowledge-tabs a[aria-current="page"] small,
.knowledge-tabs a[aria-current="page"]::after { color: rgba(255,255,255,.7); }

.knowledge-feed { padding-top: 108px; padding-bottom: 112px; }
.knowledge-section-head { display: grid; grid-template-columns: 1fr minmax(300px, 480px); gap: 60px; align-items: end; margin-bottom: 40px; }
.knowledge-section-head h2 { margin: 9px 0 0; font-size: clamp(34px, 4vw, 56px); line-height: 1.1; letter-spacing: -.045em; }
.knowledge-section-head > p { margin: 0; color: var(--knowledge-muted); line-height: 1.8; }
.knowledge-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.knowledge-card { min-height: 310px; border: 1px solid var(--knowledge-line); border-radius: 24px; background: var(--knowledge-paper); overflow: hidden; }
.knowledge-card-link { display: flex; flex-direction: column; height: 100%; padding: 28px; color: inherit; text-decoration: none; transition: .25s ease; }
.knowledge-card-meta { display: flex; justify-content: space-between; gap: 16px; color: #788698; font-size: 12px; }
.knowledge-card-meta span { color: var(--knowledge-blue); font-weight: 800; }
.knowledge-card h3 { margin: 42px 0 15px; font-size: clamp(20px, 1.7vw, 27px); line-height: 1.38; letter-spacing: -.02em; }
.knowledge-card p { display: -webkit-box; margin: 0 0 26px; overflow: hidden; color: var(--knowledge-muted); font-size: 14px; line-height: 1.75; -webkit-line-clamp: 3; -webkit-box-orient: vertical; }
.knowledge-card-more { display: flex; justify-content: space-between; margin-top: auto; padding-top: 18px; border-top: 1px solid var(--knowledge-line); color: var(--knowledge-blue); font-size: 13px; font-weight: 700; }
.knowledge-card-link:hover { background: #f8fbff; }
.knowledge-card-link:hover .knowledge-card-more i { transform: translate(2px, -2px); }
.knowledge-card:first-child { grid-column: span 2; min-height: 390px; background: linear-gradient(135deg, #071a33, #0b4f88); color: #fff; }
.knowledge-card:first-child .knowledge-card-link { padding: clamp(32px, 4vw, 54px); background: radial-gradient(circle at 90% 15%, rgba(89,193,255,.2), transparent 30%); }
.knowledge-card:first-child .knowledge-card-meta { color: rgba(255,255,255,.55); }
.knowledge-card:first-child .knowledge-card-meta span,
.knowledge-card:first-child .knowledge-card-more { color: #ffad9d; }
.knowledge-card:first-child h3 { max-width: 760px; margin-top: 70px; font-size: clamp(30px, 3.1vw, 48px); line-height: 1.2; }
.knowledge-card:first-child p { max-width: 690px; color: rgba(255,255,255,.68); font-size: 16px; }
.knowledge-card:first-child .knowledge-card-more { border-color: rgba(255,255,255,.13); }
.knowledge-pagination { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 42px; }
.knowledge-pagination a,
.knowledge-pagination span,
.knowledge-pagination strong { display: grid; min-width: 42px; height: 42px; padding: 0 12px; place-items: center; border: 1px solid var(--knowledge-line); border-radius: 999px; background: #fff; color: var(--knowledge-ink); font-size: 13px; text-decoration: none; }
.knowledge-pagination strong { color: #fff; border-color: var(--knowledge-blue); background: var(--knowledge-blue); }
.knowledge-pagination span { color: #a0a9b4; }

.knowledge-method { padding: 110px 0; background: #e7f4ff; }
.knowledge-method > .shell { display: grid; grid-template-columns: .75fr 1.25fr; gap: clamp(50px, 9vw, 150px); }
.knowledge-method h2 { margin: 18px 0 0; font-size: clamp(36px, 4.4vw, 62px); line-height: 1.12; letter-spacing: -.05em; }
.knowledge-method ol { list-style: none; margin: 0; padding: 0; border-top: 1px solid rgba(7,26,51,.18); }
.knowledge-method li { display: grid; grid-template-columns: 54px 150px 1fr; gap: 18px; padding: 28px 0; border-bottom: 1px solid rgba(7,26,51,.18); }
.knowledge-method li span { color: var(--knowledge-coral); font-size: 12px; font-weight: 800; }
.knowledge-method li b { font-size: 17px; }
.knowledge-method li p { margin: 0; color: var(--knowledge-muted); line-height: 1.7; }
.knowledge-cta { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; margin-top: 112px; margin-bottom: 112px; padding: clamp(38px, 5vw, 72px); border-radius: 28px; background: linear-gradient(135deg, #fff8f4, #fff 46%, #eaf6ff); border: 1px solid var(--knowledge-line); }
.knowledge-cta h2 { margin: 14px 0 0; font-size: clamp(32px, 3.6vw, 52px); line-height: 1.15; letter-spacing: -.045em; }
.knowledge-cta > div:last-child { align-self: end; }
.knowledge-cta p { margin: 0 0 28px; color: var(--knowledge-muted); line-height: 1.85; }

/* Article */
.article-hero { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(280px, .55fr); gap: 64px; align-items: end; padding-top: 62px; padding-bottom: 72px; border-bottom: 1px solid var(--knowledge-line); }
.article-heading h1 { max-width: 1000px; margin: 24px 0; font-size: clamp(38px, 5vw, 70px); line-height: 1.12; letter-spacing: -.05em; font-weight: 580; }
.article-heading > p { max-width: 830px; margin: 0; color: var(--knowledge-muted); font-size: 18px; line-height: 1.85; }
.article-meta { display: flex; flex-wrap: wrap; gap: 12px 24px; margin-top: 34px; color: #718094; font-size: 13px; }
.article-reading-note { padding: 30px; border: 1px solid var(--knowledge-line); border-radius: 22px; background: linear-gradient(145deg, #eaf6ff, #fff); }
.article-reading-note span { color: var(--knowledge-blue); font-size: 12px; font-weight: 800; letter-spacing: .1em; }
.article-reading-note strong { display: block; margin: 22px 0 14px; font-size: 24px; line-height: 1.35; }
.article-reading-note p { margin: 0; color: var(--knowledge-muted); font-size: 13px; line-height: 1.75; }
.article-layout { display: grid; grid-template-columns: 250px minmax(0, 830px); gap: clamp(50px, 8vw, 120px); justify-content: center; padding-top: 76px; }
.article-aside { min-width: 0; }
.article-toc,
.article-path { position: sticky; top: 105px; padding: 24px 0; border-top: 1px solid var(--knowledge-line); }
.article-toc + .article-path { position: static; margin-top: 24px; }
.article-toc > span,
.article-path > span { display: block; margin-bottom: 16px; color: #7a8898; font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.article-toc nav,
.article-path { display: flex; flex-direction: column; }
.article-toc a,
.article-path a { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; color: var(--knowledge-muted); font-size: 13px; line-height: 1.5; text-decoration: none; }
.article-toc a:hover,
.article-path a:hover { color: var(--knowledge-blue); }
.article-paper { min-width: 0; padding: 0 0 72px; }
.knowledge-article-page .article-body { display: block; color: #26384d; font-size: 18px; line-height: 1.9; }
.article-body-isolated { width: 100%; min-width: 0; }
.article-body > *:first-child { margin-top: 0 !important; }
.article-body p,
.article-body li,
.article-body span { font-family: inherit !important; font-size: inherit !important; line-height: inherit !important; }
.article-body p { margin: 0 0 1.65em !important; color: inherit !important; letter-spacing: 0 !important; }
.article-body h2 { scroll-margin-top: 120px; margin: 2.2em 0 .8em; color: var(--knowledge-ink); font-size: 34px; line-height: 1.3; letter-spacing: -.035em; }
.article-body h3 { scroll-margin-top: 120px; margin: 1.9em 0 .7em; color: var(--knowledge-ink); font-size: 24px; line-height: 1.4; }
.article-body img { display: block; max-width: 100% !important; height: auto !important; margin: 34px auto; border-radius: 14px; }
.article-body .img_wrapper { max-width: 100%; margin: 34px 0; }
.article-body table { width: 100% !important; border-collapse: collapse; font-size: 14px; }
.article-body th,
.article-body td { padding: 12px 14px; border: 1px solid var(--knowledge-line); text-align: left; }
.article-body blockquote { margin: 30px 0; padding: 22px 28px; border-left: 3px solid var(--knowledge-coral); background: #fff8f4; color: #47586b; }
.article-body a { color: var(--knowledge-blue); text-underline-offset: 3px; }
.article-source-note { margin-top: 0px; padding: 26px 28px; border-radius: 16px; background: #edf6fd; }
.article-source-note b { font-size: 13px; }
.article-source-note p { margin: 8px 0 0; color: var(--knowledge-muted); font-size: 13px; line-height: 1.75; }
.article-related { padding-top: 86px; padding-bottom: 30px; border-top: 1px solid var(--knowledge-line); }
.article-related header { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 30px; }
.article-related h2 { margin: 10px 0 0; font-size: clamp(30px, 3.5vw, 48px); letter-spacing: -.04em; }
.article-related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.article-related-grid article { min-height: 230px; border: 1px solid var(--knowledge-line); border-radius: 20px; background: #fff; }
.article-related-grid a { display: flex; flex-direction: column; height: 100%; padding: 25px; color: var(--knowledge-ink); text-decoration: none; }
.article-related-grid time { color: #7a8898; font-size: 12px; }
.article-related-grid h3 { margin: 30px 0 22px; font-size: 20px; line-height: 1.45; }
.article-related-grid span { margin-top: auto; color: var(--knowledge-blue); font-size: 13px; }
.article-back { display: inline-block; margin-top: 26px; color: var(--knowledge-blue); font-size: 14px; text-decoration: none; }
.article-cta { margin-top: 72px; }

@media (max-width: 1020px) {
  .knowledge-hero { grid-template-columns: 1fr; }
  .knowledge-compass { display: grid; grid-template-columns: 160px 1fr; gap: 30px; align-items: center; }
  .compass-index { position: absolute; top: 24px; left: 28px; }
  .compass-mark { margin: 34px auto 20px; }
  .knowledge-tabs { grid-template-columns: 1fr; }
  .knowledge-tabs.faq-knowledge-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .knowledge-tabs a { min-height: 0; }
  .knowledge-tabs span { margin-bottom: 12px; }
  .knowledge-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .knowledge-method > .shell { grid-template-columns: 1fr; }
  .article-hero { grid-template-columns: 1fr; }
  .article-reading-note { max-width: 560px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-aside { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .article-toc,
  .article-path { position: static; margin: 0 !important; }
}

@media (max-width: 960px) {
  .knowledge-page #primary-nav,
  .knowledge-article-page #primary-nav { display: none; width: 100%; gap: 0; }
  .knowledge-page #primary-nav.open,
  .knowledge-article-page #primary-nav.open { display: flex; flex-direction: column; align-items: stretch; }
  .knowledge-page #primary-nav .nav-link,
  .knowledge-article-page #primary-nav .nav-link { padding: 13px 12px; border-top: 1px solid var(--knowledge-line); }
}

@media (max-width: 720px) {
  .knowledge-breadcrumb { padding-top: 18px; white-space: nowrap; overflow: auto; }
  .knowledge-hero { min-height: 0; border-radius: 22px; }
  .knowledge-intro { padding: 46px 26px; }
  .knowledge-intro h1 { font-size: 40px; }
  .knowledge-prompts { margin-top: 32px; }
  .knowledge-compass { display: block; padding: 32px 25px; }
  .compass-mark { width: 120px; margin-top: 46px; margin-bottom: 38px; }
  .compass-mark::before { height: 150px; }
  .compass-mark::after { width: 150px; }
  .knowledge-compass li { grid-template-columns: 88px 1fr; }
  .knowledge-tabs { gap: 10px; }
  .knowledge-tabs.faq-knowledge-tabs { grid-template-columns: 1fr; }
  .knowledge-tabs a { padding: 23px; border-radius: 18px; }
  .knowledge-feed { padding-top: 76px; padding-bottom: 78px; }
  .knowledge-section-head { grid-template-columns: 1fr; gap: 18px; }
  .knowledge-grid { grid-template-columns: 1fr; }
  .knowledge-card:first-child { grid-column: auto; min-height: 350px; }
  .knowledge-card:first-child h3 { margin-top: 54px; font-size: 31px; }
  .knowledge-method { padding: 76px 0; }
  .knowledge-method li { grid-template-columns: 42px 1fr; }
  .knowledge-method li p { grid-column: 2; }
  .knowledge-cta { grid-template-columns: 1fr; gap: 30px; margin-top: 74px; margin-bottom: 74px; padding: 32px 25px; }
  .article-hero { gap: 34px; padding-top: 36px; padding-bottom: 48px; }
  .article-heading h1 { font-size: 39px; }
  .article-heading > p { font-size: 16px; }
  .article-layout { padding-top: 45px; }
  .article-aside { grid-template-columns: 1fr; }
  .article-toc { display: none !important; }
  .article-body { font-size: 16px; line-height: 1.85; }
  .article-body h2 { font-size: 28px; }
  .article-body h3 { font-size: 22px; }
  .article-body table { display: block; overflow-x: auto; }
  .article-related-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}