/* SteadyBP website, look A "Logbook" (matches the App Store screenshots, scripts/store-shots.json):
   ruled diary paper with a margin line, Source Serif 4 headings, real screens as flat cards with a magnified strip.
   No external fonts, scripts or trackers. */
@font-face {
  font-family: "Source Serif 4";
  src: url("assets/fonts/source-serif-4-600.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}
:root {
  --paper: #f4efe4; --rule: #e3dbc9; --margin: #e2b8b0; --ink: #1c2633; --soft: #5a6372; --accent: #1f5aa6;
  --on-accent: #ffffff; --card: #fffdf8; --edge: #d5cbb6;
  --serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #17150f; --rule: #2a261d; --margin: #5a3a35; --ink: #efe8da; --soft: #b3ab9b; --accent: #7fb0ff;
    --on-accent: #0b2140; --card: #201d16; --edge: #3a3428; color-scheme: dark; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; color: var(--ink); font: 17px/1.6 var(--sans);
  background-color: var(--paper);
  background-image: repeating-linear-gradient(to bottom, transparent 0 35px, var(--rule) 35px 36px);
}
body::before {
  content: ""; position: fixed; top: 0; bottom: 0; left: max(24px, calc(50% - 560px)); width: 2px;
  background: var(--margin); opacity: .8; pointer-events: none;
}
a { color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.wrap {
  max-width: 1080px; margin: 0 auto;
  padding-left: max(40px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px));
}
header.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 22px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font: 600 21px/1 var(--serif); color: var(--ink); text-decoration: none; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
nav { display: flex; gap: 18px; font-size: 15px; }
nav a { color: var(--soft); text-decoration: none; }
nav a:hover { color: var(--accent); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -.005em; text-wrap: balance; }
h1 { font-size: clamp(36px, 6vw, 58px); line-height: 1.08; margin: 0; }
h1 span, h2 span { color: var(--accent); display: block; }
h2 { font-size: clamp(27px, 3.6vw, 38px); line-height: 1.15; margin: 0 0 12px; }
p { margin: 0 0 14px; max-width: 60ch; }
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 28px; align-items: center; padding-block: 28px 40px; }
.hero .lede { font-size: 19px; color: var(--soft); margin-top: 18px; }
.eyebrow { font: 600 13px/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--soft); margin-bottom: 14px; }
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; margin-top: 24px; }
/* Apple's official badge, unchanged (App Store marketing guidelines); 48 px tall, above Apple's 40 px minimum. */
.store { display: inline-block; line-height: 0; border-radius: 9px; }
.store img { display: block; height: 48px; width: auto; }
.store:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.small { font-size: 14px; color: var(--soft); }
.art { width: 100%; height: auto; display: block; }
.row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; align-items: center; padding-block: 34px; border-top: 1px dashed var(--edge); }
.row:nth-of-type(even) .art { order: -1; }
.row ul { margin: 0; padding-left: 20px; }
.row li { margin: 4px 0; }
.note { border-top: 1px dashed var(--edge); padding-block: 28px; font-size: 15px; color: var(--soft); }
main.doc { padding-block: 16px 48px; max-width: 760px; }
main.doc h1 { font-size: clamp(34px, 5vw, 46px); margin-bottom: 6px; }
main.doc h2 { font-size: 25px; margin: 30px 0 8px; }
main.doc ul { padding-left: 22px; }
main.doc li { margin: 6px 0; }
.updated { color: var(--soft); font-size: 15px; }
.mail { font-weight: 600; user-select: all; }
footer { padding-block: 26px 40px; font-size: 14px; color: var(--soft); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }
@media (max-width: 760px) {
  body::before { left: 20px; }
  .wrap { padding-left: max(34px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
  .hero, .row { grid-template-columns: minmax(0, 1fr); }
  .row:nth-of-type(even) .art { order: 0; }
  .hero { padding-block: 10px 24px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }