/* Reading layouts share Echo's typography, colour, rounded controls and compact header. */
.guide-shell { max-width: 1280px; margin: 0 auto; padding: 0 var(--gutter); }
.guide-shell > *, .guide-layout > *, .guide-feature > *, .guide-grid > * { min-width: 0; }
.guide-hero { padding: clamp(40px, 6vw, 80px) 0 42px; }
.guide-hero .eyebrow { color: var(--muted); flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.guide-hero .eyebrow a { text-decoration: underline; text-underline-offset: 4px; }
.guide-hero h1 { max-width: 16ch; color: var(--ink); font-size: clamp(40px, 5.3vw, 72px); letter-spacing: -0.045em; line-height: 1.08; font-weight: 700; }
.guide-deck { max-width: 43em; margin-top: 22px; font-size: clamp(18px, 1.7vw, 21px); line-height: 1.65; }
.guide-byline { display: flex; flex-wrap: wrap; align-items: baseline; gap: 3px 6px; margin-top: 24px; font-size: 13px; color: var(--muted); }
.guide-byline > span[aria-hidden] { padding: 0 4px; }
.guide-byline a { text-decoration: underline; text-underline-offset: 3px; }
.guide-layout { display: grid; grid-template-columns: minmax(0, 740px) minmax(180px, 1fr); gap: clamp(32px, 5vw, 76px); padding-bottom: 72px; align-items: start; }
.guide-body { font-size: 17px; line-height: 1.85; }
.guide-body section + section { margin-top: 48px; }
.guide-body h2 { font-size: clamp(27px, 2.6vw, 34px); line-height: 1.2; letter-spacing: -0.03em; margin: 0 0 18px; }
.guide-body h3 { font-size: 21px; line-height: 1.35; letter-spacing: -0.025em; margin: 28px 0 12px; color: var(--ink); }
.guide-body p { margin: 0 0 19px; }
.guide-body p:last-child { margin-bottom: 0; }
.guide-body a { text-decoration: underline; text-decoration-color: #a88a37; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.guide-body a:hover { text-decoration-thickness: 2px; }
.guide-body ol, .guide-body ul { padding-left: 24px; margin: 18px 0 24px; }
.guide-body li { padding-left: 5px; margin: 0 0 14px; }
.guide-body li::marker { color: var(--ink); font-weight: 650; }
.guide-answer { background: color-mix(in srgb, var(--sun) 13%, var(--card)); border: 1px solid color-mix(in srgb, var(--sun) 35%, var(--line)); border-radius: 24px; padding: 28px 30px; margin-bottom: 40px; }
.guide-answer p:last-child { color: var(--ink); font-size: 18px; line-height: 1.75; }
.guide-body .example-label { font-size: 12px; font-weight: 700; letter-spacing: 0.04em; color: var(--muted); margin: 0 0 12px; }
.guide-example { border: 1px solid var(--line); border-radius: 24px; padding: 26px 30px; background: var(--card); margin: 25px 0; box-shadow: var(--shadow); }
.guide-example blockquote { color: var(--ink); font-size: 23px; line-height: 1.6; letter-spacing: -0.025em; margin: 12px 0 20px; }
.guide-example > p:last-child { font-size: 14px; line-height: 1.7; color: var(--muted); }
.example-pair { display: grid; gap: 16px; margin-bottom: 20px; }
.example-pair > div { border-radius: 16px; background: var(--soft); padding: 20px; }
.example-pair > div:last-child { background: color-mix(in srgb, var(--sun) 15%, var(--card)); }
.example-pair h3 { font-size: 12px; letter-spacing: 0.02em; margin: 0 0 8px; color: var(--muted); }
.example-pair p { font-size: 21px; line-height: 1.6; color: var(--ink); }
.guide-answer > .example-label, .example-pair h3 { color: var(--text); }
.guide-aside { position: sticky; top: 108px; border-left: 1px solid var(--line); padding-left: 24px; }
.guide-aside h2 { font-size: 12px; font-weight: 700; letter-spacing: 0.02em; margin: 0 0 14px; }
.guide-aside ol { padding: 0; list-style: none; margin: 0; }
.guide-aside li { margin-bottom: 2px; }
.guide-aside li a { display: flex; align-items: center; min-height: 44px; padding: 6px 0; font-size: 14px; line-height: 1.5; color: var(--muted); }
.guide-aside li a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.guide-version { font-size: 12px; line-height: 1.7; color: var(--muted); padding-top: 20px; margin-top: 18px; border-top: 1px solid var(--line); }
.guide-aside .text-link { font-size: 13px; margin-top: 12px; }
.guide-mobile-toc { display: none; }
.guide-table { overflow-x: auto; border: 1px solid var(--line); border-radius: 20px; background: var(--card); margin: 24px 0; }
.guide-table table { border-collapse: collapse; width: 100%; font-size: 15px; line-height: 1.65; min-width: 520px; text-align: left; }
.guide-table caption { text-align: left; padding: 16px 20px; font-size: 13px; font-weight: 600; background: var(--soft); color: var(--ink); }
.guide-table th, .guide-table td { padding: 17px 20px; border-bottom: 1px solid var(--line); vertical-align: top; }
.guide-table th { color: var(--ink); font-weight: 650; }
.guide-table thead th { font-size: 13px; }
.guide-table th:first-child { min-width: 120px; }
.guide-table tr:last-child > * { border-bottom: 0; }
.guide-source { font-size: 13px; color: var(--muted); }
.guide-body .guide-languages { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; margin: 22px 0; }
.guide-body .guide-languages li { border: 1px solid var(--line); border-radius: 99px; padding: 5px 13px; margin: 0; font-size: 14px; background: var(--card); }
.guide-related { border-top: 1px solid var(--line); padding: 40px 0 60px; }
.guide-related > h2, .guide-section-intro h2 { font-size: 34px; margin-bottom: 24px; }
.guide-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.guide-card { display: flex; flex-direction: column; align-items: flex-start; padding: 28px; border: 1px solid var(--line); border-radius: 24px; background: var(--card); box-shadow: var(--shadow); transition: transform 200ms, box-shadow 200ms; }
.guide-card:hover { transform: translateY(-4px); box-shadow: 0 15px 34px #17191612; }
.guide-category { display: block; color: var(--muted); font-size: 12px; font-weight: 600; letter-spacing: 0.02em; }
.guide-card h3 { font-size: 25px; line-height: 1.22; letter-spacing: -0.03em; color: var(--ink); margin: 23px 0 14px; }
.guide-card > p { font-size: 15px; line-height: 1.7; margin-bottom: 25px; }
.guide-card-foot { display: flex; justify-content: space-between; align-items: center; width: 100%; margin-top: auto; font-size: 12px; color: var(--muted); }
.guide-card-foot > span { display: grid; place-items: center; border-radius: 50%; width: 34px; height: 34px; background: var(--soft); font-size: 18px; color: var(--ink); }
.guide-card:hover .guide-card-foot > span { background: var(--sun); color: #171916; }
.guide-download { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 36px; padding: clamp(26px, 4vw, 48px); background: var(--soft); border: 1px solid var(--line); border-radius: 28px; margin-bottom: 70px; }
.guide-download h2 { font-size: clamp(28px, 3vw, 40px); margin-bottom: 16px; max-width: 18ch; }
.guide-download p { max-width: 32em; font-size: 15px; }
.guide-download .eyebrow { font-size: 12px; margin-bottom: 18px; }
.guide-download .caption { font-size: 11px; margin-top: 12px; text-align: center; }
.guide-download .button { width: 100%; }
.guide-hub-hero { display: grid; grid-template-columns: 1.1fr 0.9fr; align-items: center; gap: 40px; padding-bottom: 56px; }
.guide-hub-hero h1 { max-width: 14ch; }
.guide-hub-hero h1 span { position: relative; z-index: 0; }
.guide-hub-hero h1 span::after { content: ""; position: absolute; z-index: -1; left: 1px; right: -3px; bottom: 0.05em; height: 0.12em; border-radius: 99px; background: var(--sun); transform: rotate(-2deg); }
.guide-sketch { position: relative; min-height: 360px; overflow: hidden; }
.sketch-sun { position: absolute; width: 100px; height: 100px; background: var(--sun); border-radius: 50%; top: 12px; right: 50px; box-shadow: 0 0 0 24px color-mix(in srgb, var(--sun) 8%, transparent); }
.sketch-line { position: absolute; border: 8px solid var(--wave-1); border-radius: 50%; width: 360px; height: 100px; transform: rotate(-18deg); top: 130px; left: 15px; }
.sketch-line:nth-of-type(3) { top: 165px; border-color: var(--wave-2); }
.sketch-line:nth-of-type(4) { top: 200px; border-color: var(--wave-4); }
.sketch-key { position: absolute; display: grid; place-items: center; top: 82px; left: 82px; width: 110px; height: 110px; background: var(--card); border: 1px solid var(--line); border-radius: 26px; font-size: 40px; font-weight: 650; color: var(--ink); transform: rotate(-12deg); box-shadow: 0 7px 0 var(--soft), 0 24px 42px #17191619; }
.guide-feature { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; border: 1px solid var(--line); background: var(--soft); border-radius: 28px; padding: 42px; }
.guide-feature h2 { font-size: clamp(30px, 3vw, 42px); margin: 18px 0; max-width: 15ch; }
.guide-feature p:not(.guide-category) { font-size: 16px; line-height: 1.7; }
.guide-feature .button { font-size: 14px; margin-top: 26px; gap: 20px; }
.guide-demo { display: grid; gap: 20px; align-content: center; }
.guide-demo p { display: flex; align-items: center; gap: 15px; }
.guide-demo p:last-child { font-size: 13px; color: var(--muted); }
.guide-demo kbd { font-size: 18px; padding: 12px 16px; background: var(--card); }
.guide-demo-text { padding: 25px; border-radius: 20px; background: var(--card); box-shadow: var(--shadow); font-size: 24px; line-height: 1.5; color: var(--ink); letter-spacing: -0.02em; }
.guide-catalog { padding: 64px 0; }
.guide-section-intro { margin-bottom: 28px; }
.guide-section-intro h2 { margin-bottom: 12px; }
.guide-section-intro p { font-size: 16px; }
.home-guides .guide-section-intro { display: flex; align-items: end; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.home-guides .guide-section-intro h2 { margin: 0; max-width: 18ch; font-size: clamp(32px, 4vw, 48px); }
.top nav a[aria-current] { text-decoration: underline; text-decoration-color: #cc9d11; text-underline-offset: 6px; }
@media (max-width: 1000px) {
  .guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-related .guide-grid { grid-template-columns: 1fr; }
  .guide-layout { grid-template-columns: minmax(0, 1fr) 190px; gap: 32px; }
  .guide-feature { gap: 28px; padding: 30px; }
  .guide-feature .button { gap: 12px; }
  .guide-download { grid-template-columns: 1fr; gap: 24px; }
  .guide-download > div:last-child { justify-self: start; }
}
@media (max-width: 760px) {
  .guide-layout { grid-template-columns: 1fr; gap: 28px; padding-bottom: 44px; }
  .guide-body { order: 2; }
  .guide-aside { display: none; }
  .guide-mobile-toc { display: block; border: 1px solid var(--line); border-radius: 16px; padding: 0 22px; margin-bottom: 20px; background: var(--card); }
  .guide-mobile-toc summary { padding: 12px 0; min-height: 48px; font-size: 14px; font-weight: 600; cursor: pointer; color: var(--ink); }
  .guide-mobile-toc ol { list-style: none; padding: 0; margin: 0 0 12px; }
  .guide-mobile-toc li { margin: 0; padding: 0; }
  .guide-mobile-toc a { display: block; padding: 10px 0; min-height: 44px; font-size: 14px; }
  .guide-hero { padding-bottom: 30px; }
  .guide-hub-hero { grid-template-columns: 1fr; gap: 0; }
  .guide-sketch { display: none; }
  .guide-feature { grid-template-columns: 1fr; }
  .guide-feature h2 { max-width: 20ch; }
  .guide-demo { gap: 16px; }
}
@media (max-width: 600px) {
  .guide-hero h1 { font-size: clamp(37px, 10vw, 51px); }
  .guide-hero .eyebrow { font-size: 11px; }
  .guide-deck { font-size: 18px; }
  .guide-byline { font-size: 12px; line-height: 1.7; }
  .guide-body { font-size: 16px; line-height: 1.8; }
  .guide-body h2 { font-size: 28px; }
  .guide-answer, .guide-example { padding: 23px; border-radius: 20px; }
  .guide-answer p:last-child { font-size: 17px; }
  .guide-example blockquote { font-size: 21px; }
  .guide-grid { grid-template-columns: 1fr; gap: 14px; }
  .guide-card { padding: 25px; }
  .guide-card h3 { margin-top: 16px; }
  .guide-card > p { margin-bottom: 18px; }
  .guide-feature { padding: 25px; border-radius: 24px; }
  .guide-feature .button { text-align: center; line-height: 1.4; padding: 14px 18px; }
  .guide-demo-text { font-size: 21px; padding: 22px; }
  .guide-catalog { padding: 44px 0; }
  .guide-download { padding: 25px; border-radius: 24px; margin-bottom: 44px; }
  .guide-download > div:last-child { justify-self: stretch; }
  .guide-download .caption { font-size: 11px; }
}
@media (max-width: 560px) {
  .guide-table::before { content: "Scroll sideways for all columns →"; display: block; position: sticky; left: 0; padding: 10px 16px; font-size: 12px; color: var(--muted); background: var(--card); border-bottom: 1px solid var(--line); }
}