/* recordaudiobook.com: Instant ACX Ready's Blue Hour look (its web/css/app.css), for a reading page.
   Every colour is a light-dark() token here; the visitor's own light or dark setting picks the room. */

:root {
  color-scheme: dark light;
  --sky-1: light-dark(#f2f6fc, #0f1829);
  --sky-2: light-dark(#e7edf8, #0a101c);
  --sky-3: light-dark(#dae3f2, #06090f);
  --bg: light-dark(#e9eef7, #080c15);
  --surface: light-dark(#f6f8fd, #0d1422);
  --surface-2: light-dark(#eaeff8, #141c2b);
  --glass: light-dark(rgba(252, 253, 255, 0.84), rgba(19, 28, 46, 0.72));
  --line: light-dark(rgba(60, 90, 150, 0.17), rgba(170, 200, 255, 0.1));
  --line-strong: light-dark(rgba(60, 90, 150, 0.32), rgba(170, 200, 255, 0.2));
  --text: light-dark(#1d2841, #dde2ec);
  --text-2: light-dark(#37435f, #c5cddc);
  --muted: light-dark(#55607b, #9ba5b9);
  --title: light-dark(#152039, #f0e6d2);
  --accent: light-dark(#7c5810, #e3be82);
  --accent-soft: light-dark(rgba(124, 88, 16, 0.09), rgba(227, 190, 130, 0.1));
  --gold-1: light-dark(#f1ca8c, #efc78c);
  --gold-2: light-dark(#dcab5f, #d7a861);
  --gold-ink: #2c1f0a;
  --gold-hi: light-dark(#80590d, #f6dba6);
  --blue: light-dark(#2f5db2, #86a9ea);
  --blue-2: light-dark(#5d86d6, #b3caf6);
  --blue-sink: light-dark(rgba(47, 93, 178, 0.14), rgba(134, 169, 234, 0.16));
  --glow-blue: light-dark(rgba(72, 116, 206, 0.12), rgba(80, 122, 200, 0.2));
  --lift-ink: light-dark(rgba(40, 60, 110, 0.12), rgba(0, 0, 0, 0.35));
  --lift: 0 10px 28px var(--lift-ink);
  --serif: "Hoefler Text", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; color: var(--text); font: 17px/1.62 var(--sans); -webkit-font-smoothing: antialiased;
  background-color: var(--bg);
  background-image: radial-gradient(90% 50% at 50% 0%, var(--glow-blue) 0%, var(--bg) 70%),
                    linear-gradient(180deg, var(--sky-1) 0%, var(--sky-2) 46%, var(--sky-3) 100%);
  background-attachment: fixed;
}
a { color: var(--accent); text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; color: var(--title); line-height: 1.18; margin: 0 0 12px; }
h1 { font-size: clamp(34px, 5.2vw, 58px); letter-spacing: -0.01em; }
h1 em { font-style: italic; color: var(--gold-hi); }
h2 { font-size: clamp(25px, 3vw, 34px); }
h3 { font-size: 22px; }
p { margin: 0 0 14px; }
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.18em; font-size: 12.5px; color: var(--accent); margin-bottom: 14px; }
.lede { font-size: 19px; color: var(--text-2); max-width: 760px; }

/* top bar */
.top { position: sticky; top: 0; z-index: 5; background: var(--glass); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; gap: 18px; min-height: 62px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--title); font-family: var(--serif); font-size: 20px; }
.nav { display: flex; gap: 18px; margin-left: auto; }
.nav a { color: var(--text-2); text-decoration: none; font-size: 15px; }
.nav a:hover, .nav a[aria-current] { color: var(--accent); }

/* buttons: one gold button a screen */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 20px; border-radius: 12px;
  border: 1px solid var(--line-strong); background: var(--surface); color: var(--text); text-decoration: none; font-weight: 600; font-size: 16px; }
.btn:hover { border-color: var(--accent); }
.btn.gold { background: linear-gradient(180deg, var(--gold-1), var(--gold-2)); color: var(--gold-ink); border-color: transparent; box-shadow: var(--lift); }
.btn.big { padding: 15px 28px; font-size: 18px; }
.btn.small { padding: 8px 14px; font-size: 14.5px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0 12px; }

/* hero */
.hero { padding: 72px 0 24px; }
.skyline { display: block; width: 100%; height: auto; margin-top: 34px; }
.skyline .bar { fill: var(--blue); }
.skyline .lit { fill: var(--gold-1); }
.skyline .sink { fill: var(--blue-sink); }
.skyline .acx { stroke: var(--accent); stroke-width: 1.2; stroke-dasharray: 5 7; }
.skyline .water { stroke: var(--line-strong); stroke-width: 1; }

/* bands and grids */
.band { background: var(--glass); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 56px 0; margin: 40px 0; }
.steps { padding-left: 22px; display: grid; gap: 14px; max-width: 880px; }
.steps li { padding-left: 6px; }
.steps b { color: var(--title); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; margin-bottom: 40px; }
.feature-grid article { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 22px; box-shadow: var(--lift); }
.feature-grid p { color: var(--text-2); font-size: 16px; margin: 0; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
.who { margin: 56px auto; }
.key { text-align: left; max-width: 760px; }
.faq { margin: 56px auto 72px; max-width: 860px; }
.faq details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 600; color: var(--title); }
.faq details p { margin: 10px 0 0; color: var(--text-2); }

/* the ACX table */
.acx-table { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: 14px; overflow: hidden; border: 1px solid var(--line); font-size: 15.5px; margin: 8px 0 18px; }
.acx-table th, .acx-table td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.acx-table th { color: var(--muted); font-weight: 600; font-size: 13.5px; text-transform: uppercase; letter-spacing: 0.06em; background: var(--surface-2); }
.acx-table tr:last-child td { border-bottom: 0; }
.acx-table td:first-child { color: var(--title); font-weight: 600; }

/* articles */
.article { max-width: 800px; padding-top: 56px; padding-bottom: 40px; }
.article section { margin: 40px 0; }
section[id] { scroll-margin-top: 80px; }
.article section p { color: var(--text-2); }
.toc { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin: 26px 0; }
.toc ol { margin: 8px 0 0; padding-left: 22px; columns: 2; column-gap: 28px; font-size: 15.5px; }
.try { background: var(--accent-soft); border: 1px solid var(--line-strong); border-radius: 18px; padding: 26px; margin: 48px 0 24px; }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 40px 0 28px; margin-top: 40px; background: var(--glass); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px; }
.foot-grid b { display: block; color: var(--title); margin-bottom: 6px; }
.foot-grid a:not(.brand) { display: block; color: var(--text-2); text-decoration: none; font-size: 15px; padding: 3px 0; }
.foot-grid a:not(.brand):hover { color: var(--accent); }
.fine { color: var(--muted); font-size: 13px; margin-top: 26px; max-width: 900px; }

@media (max-width: 900px) {
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .two, .foot-grid { grid-template-columns: 1fr; }
  .nav { display: none; }
  .top-in .btn { margin-left: auto; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .feature-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 44px; }
  .toc ol { columns: 1; }
  .brand span { font-size: 17px; white-space: nowrap; }
  .top-in { gap: 10px; }
  .top-in .btn { white-space: nowrap; padding: 7px 11px; font-size: 13.5px; }
  .acx-table { font-size: 14px; }
  .acx-table th, .acx-table td { padding: 9px 10px; }
}