/* Public service pages and practical guides. No JavaScript required. */
.reading-page { background: #f7faff; }
.reading-header-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; height: 100%; }
.reading-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; }
.reading-nav a { padding-block: 12px; white-space: nowrap; }
.reading-nav a:hover, .reading-nav a[aria-current], .reading-console:hover { color: #2169df; }
.reading-nav a[aria-current] { box-shadow: 0 2px #2f7df6; }
.reading-console { font-size: 14px; white-space: nowrap; }
.reading-breadcrumbs { display: flex; gap: 12px; flex-wrap: wrap; font-size: 13px; color: #65758c; padding-top: 28px; }
.reading-breadcrumbs a:hover { color: #2169df; }
.reading-hero { padding: 48px 0 60px; max-width: 920px; }
.reading-kicker { font-size: 12px; font-weight: 600; color: #2169df; letter-spacing: 2px; display: flex; align-items: center; gap: 10px; }
.reading-kicker > span { width: 7px; height: 7px; background: #2f7df6; border-radius: 50%; }
.reading-hero h1 { font-size: clamp(30px, 3.6vw, 49px); line-height: 1.35; letter-spacing: -1px; margin-top: 18px; max-width: 920px; }
.reading-hero > p { max-width: 780px; margin-top: 22px; color: #52647e; font-size: 17px; line-height: 1.9; }
.reading-hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 26px; margin-top: 28px; }
.reading-back { font-size: 14px; color: #355579; }
.reading-back:hover { color: #2169df; }
.reading-layout { display: grid; grid-template-columns: 245px minmax(0, 1fr); gap: 52px; align-items: start; }
.reading-sidebar { position: sticky; top: 118px; }
.reading-toc { display: grid; gap: 4px; }
.reading-toc > strong { margin: 0 0 14px 12px; font-size: 12px; letter-spacing: 2px; color: #65758c; }
.reading-toc a { display: flex; gap: 11px; padding: 10px 12px; border-radius: 6px; font-size: 14px; line-height: 1.55; }
.reading-toc a > span { font: 11px/2 var(--mono); color: #8496af; min-width: 19px; }
.reading-toc a:hover { background: #e9f1fd; color: #2169df; }
.reading-help { border-top: 1px solid #dce5f1; margin-top: 25px; padding: 25px 12px 0; }
.reading-help strong { font-size: 14px; }
.reading-help p { font-size: 13px; color: #65758c; margin: 8px 0 12px; }
.reading-help a { font-size: 13px; color: #2169df; }
.reading-body { min-width: 0; background: #fff; border: 1px solid #dce5f1; border-radius: 16px; padding: 4px 42px; }
.reading-section { position: relative; padding: 35px 0 38px; scroll-margin-top: 16px; }
.reading-section + .reading-section { border-top: 1px solid #e6edf6; }
.reading-section-number { font: 12px/1.5 var(--mono); color: #2f7df6; letter-spacing: 2px; margin-bottom: 12px; }
.reading-section h2 { font-size: 25px; line-height: 1.45; margin-bottom: 20px; letter-spacing: -.4px; }
.reading-section h3 { font-size: 18px; margin: 22px 0 12px; }
.reading-section p, .reading-section ul, .reading-section ol { margin: 14px 0 0; line-height: 1.95; color: #465b76; }
.reading-section p:first-of-type { margin-top: 0; }
.reading-section ul, .reading-section ol { padding-left: 22px; }
.reading-section li + li { margin-top: 10px; }
.reading-section strong { color: #172c49; font-weight: 600; }
.reading-section a { color: #2169df; text-decoration: underline; text-underline-offset: 3px; }
.reading-section a:hover { color: #154999; }
.reading-section code { font-family: var(--mono); font-size: .87em; background: #eff4fc; padding: 2px 5px; border-radius: 4px; overflow-wrap: anywhere; }
.reading-section pre { max-width: 100%; overflow-x: auto; padding: 20px; background: #132940; color: #dfedff; border-radius: 8px; font-size: 13px; line-height: 1.8; }
.reading-section pre code { background: transparent; padding: 0; color: inherit; font-size: inherit; overflow-wrap: normal; }
.reading-table-wrap { width: 100%; overflow-x: auto; margin: 22px 0; }
.reading-section table { width: 100%; border-collapse: collapse; font-size: 13px; line-height: 1.8; }
.reading-section th, .reading-section td { padding: 14px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid #e3ebf5; overflow-wrap: anywhere; }
.reading-section th { background: #f2f6fc; font-weight: 600; color: #234365; }
.reading-section th[scope="row"] { white-space: nowrap; }
.reading-section td { color: #52647e; }
.reading-section blockquote { margin: 22px 0; border-left: 3px solid #2f7df6; padding: 16px 20px; background: #f2f7ff; color: #3e5878; }
.reading-faq details { border-top: 1px solid #e6edf6; padding: 18px 0; }
.reading-faq details:last-child { padding-bottom: 0; }
.reading-faq summary { cursor: pointer; color: #28415e; font-weight: 500; font-size: 15px; }
.reading-faq details p { font-size: 14px; margin-top: 12px; }
.reading-related { padding: 64px 0 72px; }
.reading-related h2 { font-size: 29px; margin: 12px 0 25px; }
.reading-related > div:last-child { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.reading-related a { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 23px; background: #fff; border: 1px solid #dce5f1; border-radius: 9px; font-weight: 500; }
.reading-related a:hover { border-color: #2f7df6; color: #2169df; }
.reading-related a span { color: #2f7df6; font-size: 22px; }
.reading-footer { border-top: 1px solid #dce5f1; padding: 32px 0; background: #f1f6fc; }
.reading-footer > div { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; }
.reading-footer .brand { font-weight: 600; }
.reading-footer nav { display: flex; gap: 24px; font-size: 13px; }
.reading-footer > div > span { font-size: 12px; color: #65758c; }
.knowledge-section { border-top: 1px solid #dce5f1; }
.knowledge-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; margin-top: 34px; }
.knowledge-card { display: flex; flex-direction: column; padding: 28px 24px; border: 1px solid #dce5f1; border-radius: 12px; background: #fff; transition: border-color .2s, transform .2s; }
.knowledge-card:hover { border-color: #2f7df6; transform: translateY(-3px); }
.knowledge-card > span { font: 11px var(--mono); color: #2169df; letter-spacing: 1.5px; }
.knowledge-card h3 { font-size: 21px; line-height: 1.5; margin: 19px 0 12px; }
.knowledge-card p { font-size: 14px; color: #65758c; line-height: 1.9; margin-bottom: 26px; }
.knowledge-card > strong { font-size: 13px; color: #2169df; margin-top: auto; }
@media (max-width: 1100px) {
  .reading-nav { gap: 20px; }
  .reading-layout { grid-template-columns: 210px minmax(0, 1fr); gap: 28px; }
  .reading-body { padding-inline: 28px; }
  .knowledge-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .reading-header { height: auto; }
  .reading-header-inner { flex-wrap: wrap; gap: 0; padding-top: 15px; }
  .reading-header .brand > span { font-size: 17px; }
  .reading-header .brand img { width: 30px; height: 30px; }
  .reading-console { margin-left: auto; font-size: 13px; }
  .reading-nav { order: 3; flex-basis: 100%; gap: 22px; margin-top: 12px; justify-content: flex-start; overflow-x: auto; font-size: 13px; }
  .reading-nav a { padding-block: 12px 14px; }
  .reading-nav a[aria-current] { box-shadow: inset 0 -2px #2f7df6; }
  .reading-hero { padding: 32px 0; }
  .reading-hero h1 { font-size: 33px; letter-spacing: -.7px; }
  .reading-hero > p { font-size: 15px; }
  .reading-hero-actions { gap: 20px; }
  .reading-layout { display: block; }
  .reading-sidebar { position: static; margin-bottom: 26px; }
  .reading-toc { grid-template-columns: repeat(2, minmax(0, 1fr)); background: #ebf2fc; padding: 18px 10px; border-radius: 10px; gap: 0; }
  .reading-toc > strong { grid-column: 1/-1; margin-bottom: 6px; }
  .reading-toc a { font-size: 12px; padding-block: 8px; gap: 7px; }
  .reading-help { display: none; }
  .reading-body { padding-inline: 22px; border-radius: 11px; }
  .reading-section { padding-block: 28px; scroll-margin-top: 32px; }
  .reading-section h2 { font-size: 23px; }
  .reading-section p, .reading-section ul, .reading-section ol { font-size: 14px; }
  .reading-section th, .reading-section td { padding: 12px 9px; }
  .reading-related { padding-block: 40px; }
  .reading-related h2 { font-size: 26px; }
  .reading-related > div:last-child { grid-template-columns: 1fr; gap: 12px; }
  .reading-related a { padding: 19px; font-size: 14px; }
  .reading-footer .brand { flex-basis: 100%; }
  .reading-footer nav { gap: 20px; }
}
@media (max-width: 480px) {
  .reading-page .container { width: calc(100% - 36px); }
  .reading-nav { justify-content: space-between; gap: 14px; }
  .reading-hero h1 { font-size: 29px; }
  .reading-body { padding-inline: 18px; }
  .reading-section h2 { font-size: 21px; }
  .reading-hero-actions .button { padding: 11px 16px; font-size: 13px; }
  .reading-back { font-size: 13px; }
  .knowledge-grid { grid-template-columns: 1fr; gap: 14px; }
  .knowledge-card { padding: 24px; }
  .knowledge-card h3 { margin-top: 14px; font-size: 20px; }
}
@media (prefers-reduced-motion: reduce) { .knowledge-card { transition: none; } .knowledge-card:hover { transform: none; } }