/* Sea Window reading pages share the existing marine palette and Manrope.
   Wide question headings lead into a quiet reading column and section index. */
.guide-nav { display: flex; gap: 24px; margin-left: auto; font-size: 14px; font-weight: 700; }
.guide-nav a { white-space: nowrap; }
.guide-nav a:hover { color: var(--link); text-decoration: underline; text-underline-offset: 4px; }
.guide-page .wordmark { flex-shrink: 0; }
.guide-shell { max-width: 1160px; margin: 0 auto; padding: 32px var(--gutter) 64px; }
.guide-shell .crumbs { flex-wrap: wrap; font-size: 13px; }
.guide-heading { max-width: 920px; padding: 32px 0 40px; }
.guide-category { color: var(--link); font-size: 14px; font-weight: 700; margin: 0 0 12px; }
.guide-heading h1 { font-size: clamp(36px, 4.8vw, 60px); line-height: 1.12; letter-spacing: -0.04em; margin: 0 0 24px; max-width: 24ch; }
.guide-intro { max-width: 64ch; font-size: clamp(18px, 2vw, 21px); line-height: 1.65; color: var(--ink-2); margin: 0 0 24px; }
.guide-meta { display: flex; gap: 10px 22px; flex-wrap: wrap; font-size: 13px; color: var(--ink-3); }
.guide-meta a { text-decoration: underline; text-underline-offset: 3px; }
.guide-layout { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 64px; align-items: start; }
.guide-toc { grid-column: 2; grid-row: 1; position: sticky; top: 28px; padding: 20px 0 20px 22px; border-left: 2px solid var(--contour); }
.guide-toc h2 { font-size: 15px; margin: 0 0 16px; }
.guide-toc ol { list-style: none; margin: 0; padding: 0; }
.guide-toc li { margin: 0 0 13px; font-size: 13px; line-height: 1.5; }
.guide-toc a { color: var(--ink-2); }
.guide-toc a:hover { color: var(--link); text-decoration: underline; }
.guide-body { grid-column: 1; grid-row: 1; min-width: 0; max-width: 70ch; }
.guide-body h2 { font-size: clamp(23px, 2.4vw, 29px); line-height: 1.3; letter-spacing: -0.025em; margin: 46px 0 18px; scroll-margin-top: 24px; }
.guide-body > h2:first-child { margin-top: 0; }
.guide-body h3 { font-size: 20px; line-height: 1.4; margin: 28px 0 12px; }
.guide-body p, .guide-body li { font-size: 17px; line-height: 1.8; color: rgba(16,35,58,.88); }
.guide-body p { margin: 0 0 20px; }
.guide-body ul, .guide-body ol { padding-left: 23px; margin: 16px 0 24px; }
.guide-body li { margin-bottom: 10px; padding-left: 4px; }
.guide-body a { color: var(--link); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.table-scroll { overflow-x: auto; margin: 26px 0; border: 1px solid var(--hairline); border-radius: 8px; }
.table-scroll:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.guide-body table { width: 100%; border-collapse: collapse; font-size: 14px; line-height: 1.6; }
.guide-body caption { padding: 14px 16px; text-align: left; font-weight: 700; }
.guide-body th, .guide-body td { padding: 14px; border-bottom: 1px solid var(--hairline); text-align: left; vertical-align: top; min-width: 100px; }
.guide-body th { background: var(--shoal); font-weight: 800; }
.guide-body tr:last-child td { border-bottom: 0; }
.guide-sources { border-top: 1px solid var(--hairline); margin-top: 44px; }
.guide-sources h2 { font-size: 20px; margin-top: 28px; }
.guide-sources li { font-size: 14px; overflow-wrap: anywhere; }
.guide-app { display: flex; align-items: flex-start; gap: 28px; margin: 60px 0; padding: clamp(26px, 4vw, 46px); background: var(--deep); color: var(--paper); border-radius: 16px; }
.guide-app-icon { flex: 0 0 72px; width: 72px; border-radius: 17px; }
.guide-app h2 { font-size: clamp(24px, 3vw, 32px); line-height: 1.25; margin: 0 0 14px; letter-spacing: -0.02em; }
.guide-app p { max-width: 65ch; line-height: 1.7; margin: 0 0 22px; }
.guide-download { display: inline-block; background: var(--paper); color: var(--ink); padding: 13px 20px; border-radius: 8px; font-size: 15px; font-weight: 800; }
.guide-download:hover { background: var(--shoal); }
.guide-app .guide-platform { margin: 12px 0 0; font-size: 13px; color: #d0dce5; }
.guide-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.guide-card { border-top: 2px solid var(--contour); padding: 24px 0; }
.guide-card h2, .guide-card h3 { font-size: 23px; letter-spacing: -0.025em; line-height: 1.35; margin: 0 0 15px; }
.guide-card h2 a:hover, .guide-card h3 a:hover { color: var(--link); text-decoration: underline; text-underline-offset: 4px; }
.guide-card > p:not(.guide-category) { font-size: 16px; line-height: 1.7; color: var(--ink-2); margin: 0 0 20px; }
.guide-readtime, .guide-hub-note { font-size: 13px; color: var(--ink-3); }
.guide-hub-note { margin-top: 40px; max-width: 68ch; }
.guide-related > h2 { font-size: 26px; margin: 0 0 28px; }
.guide-related .guide-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.guide-page .guide-footer { max-width: 1160px; }
.home-guides .section-head { margin-bottom: 32px; }
.home-guides .guide-list { max-width: 1120px; margin: 0 auto; }
.home-guides .guides-all { display: inline-block; color: var(--link); text-decoration: underline; text-underline-offset: 4px; }
.home-guides .guide-card .guide-category { font-size: 14px; color: var(--link); margin: 0 0 12px; }
@media (max-width: 900px) {
  .guide-layout { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .guide-toc { grid-column: 1; grid-row: 1; position: static; }
  .guide-body { grid-row: 2; max-width: none; }
  .guide-toc ol { columns: 2; column-gap: 28px; }
  .guide-toc li { break-inside: avoid; }
  .guide-list { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .guide-card { max-width: 70ch; }
}
@media (max-width: 540px) {
  .guide-page .bar { gap: 12px 14px; flex-wrap: wrap; height: auto; min-height: 72px; padding-block: 16px; }
  .guide-nav { gap: 14px; font-size: 13px; }
  .guide-heading { padding-top: 24px; }
  .guide-shell { padding-top: 20px; }
  .guide-meta { flex-direction: column; gap: 6px; }
  .guide-toc ol { columns: 1; }
  .guide-app { flex-direction: column; gap: 20px; }
  .guide-related .guide-list { grid-template-columns: minmax(0, 1fr); }
  .guide-download { line-height: 1.5; }
}
@media print {
  .bar, .guide-toc, .guide-app, .guide-related, .site-foot, .skip { display: none; }
  .guide-layout { display: block; }
  .guide-shell { max-width: none; padding: 0; }
  .guide-body { max-width: none; }
  .guide-body a { color: inherit; }
}