/* fm1-wheel static site — landing and manual overrides. */
:root {
  --paper: #f6f1e7;
  --paper-deep: #efe7d8;
  --card: #fffaf2;
  --ink: #18222f;
  --ink-soft: #334154;
  --muted: #647080;
  --line: #ddd3c2;
  --accent: #e2552f;
  --accent-dark: #b83f21;
  --accent-soft: #f7d3c6;
  --teal: #1f6f78;
  --shadow: 0 20px 50px rgba(24, 34, 47, .12);
  --radius: 18px;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.65 "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--ink); text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 3px; }
a:hover { color: var(--accent-dark); }
img { max-width: 100%; height: auto; }
code, pre { font-family: ui-monospace, Menlo, Consolas, monospace; }
code { background: var(--paper-deep); padding: .08em .35em; border-radius: 4px; font-size: .88em; }
pre { background: var(--ink); color: #f7f1e7; border-radius: 12px; padding: 16px 18px; overflow-x: auto; }
pre code { background: none; color: inherit; padding: 0; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
.skip { position: absolute; top: -80px; left: 16px; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 0 0 8px 8px; z-index: 20; }
.skip:focus { top: 0; }

/* top navigation, shared by the landing and the manual */
.topnav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(246, 241, 231, .92);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.navwrap { display: flex; align-items: center; gap: 18px; min-height: 62px; }
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 800; letter-spacing: .04em; text-decoration: none; font-size: 1.12rem;
}
.brand::before {
  content: ""; width: 15px; height: 15px; border-radius: 50%;
  border: 3px solid var(--accent); box-shadow: inset 0 0 0 3px var(--paper);
  background: var(--accent); display: inline-block;
}
.navlinks { margin-left: auto; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 16px; font-size: .9rem; }
.navlinks a { text-decoration: none; color: var(--ink-soft); }
.navlinks a:hover { color: var(--accent-dark); }
.navlinks .github { border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; background: var(--card); }

/* landing */
.hero { padding: 72px 0 64px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.eyebrow { margin: 0 0 18px; color: var(--accent-dark); font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.hero h1 { margin: 0; font-size: clamp(3.4rem, 8vw, 6.4rem); line-height: .9; letter-spacing: -.055em; }
.hero .lede { max-width: 34rem; margin: 24px 0 0; color: var(--ink-soft); font-size: 1.18rem; }
.hero .lede strong { color: var(--ink); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 10px 20px; border-radius: 999px;
  border: 1px solid var(--ink); background: transparent; color: var(--ink);
  font-weight: 700; font-size: .95rem; text-decoration: none;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; }
.btn:hover { background: var(--ink); color: var(--paper); }
.hero-note { margin: 16px 0 0; color: var(--muted); font-size: .84rem; }
.shot { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px; box-shadow: var(--shadow); }
.shot img { display: block; border-radius: 12px; }
.shot figcaption { color: var(--muted); font-size: .8rem; padding: 9px 4px 2px; }

.section { padding: 58px 0; border-top: 1px solid var(--line); }
.section h2 { margin: 0 0 8px; font-size: clamp(1.6rem, 3vw, 2.25rem); letter-spacing: -.02em; }
.section .sub { margin: 0 0 30px; color: var(--muted); max-width: 62ch; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card .kicker { color: var(--accent-dark); font-size: .74rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.card h3 { margin: 8px 0 8px; font-size: 1.12rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: .95rem; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: step; }
.step { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px 22px; }
.step::before {
  counter-increment: step; content: counter(step);
  display: inline-grid; place-items: center; width: 32px; height: 32px; margin-bottom: 12px;
  border-radius: 50%; background: var(--accent); color: #fff; font-weight: 800; font-size: .9rem;
}
.step h3 { margin: 0 0 7px; font-size: 1.06rem; }
.step p { margin: 0; color: var(--ink-soft); font-size: .94rem; }
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: start; }
.split p { color: var(--ink-soft); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { padding: 10px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
tr:last-child td { border-bottom: 0; }
th { color: var(--muted); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; background: var(--paper-deep); }
td strong { color: var(--ink); }
.pill { display: inline-block; background: var(--accent-soft); color: var(--accent-dark); border-radius: 999px; padding: 2px 9px; font-size: .78rem; font-weight: 800; letter-spacing: .04em; }
.note { margin-top: 16px; padding: 12px 16px; border-left: 4px solid var(--accent); background: var(--card); color: var(--ink-soft); border-radius: 0 12px 12px 0; font-size: .92rem; }
.cta { background: var(--ink); color: var(--paper); border-radius: var(--radius); padding: 34px; display: flex; flex-wrap: wrap; align-items: center; gap: 24px; }
.cta h2 { margin: 0; color: #fff; }
.cta p { margin: 6px 0 0; color: #c8d0d9; }
.cta .actions { margin-top: 0; margin-left: auto; }
.cta .btn { border-color: #fff; color: #fff; }
.cta .btn.primary { background: var(--accent); border-color: var(--accent); }
.cta .btn:not(.primary):hover { background: #fff; color: var(--ink); }
.source-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.source-grid a { color: var(--accent-dark); }
.sitefoot { background: var(--ink); color: #c8d0d9; padding: 34px 0; font-size: .88rem; }
.sitefoot a { color: #fff; text-decoration-color: var(--accent); }
.sitefoot .wrap { display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: baseline; }
.sitefoot .right { margin-left: auto; }

/* manual pages: keep manual_html's paper style, add the shared chrome */
body.manual { background: var(--paper); color: var(--ink); padding: 0; }
body.manual main { max-width: 54rem; padding: 34px 0 72px; }
body.manual main > a.home { display: none; }
body.manual .wrap { width: min(54rem, calc(100% - 40px)); }
body.manual h1 { font-size: clamp(2rem, 4vw, 3.1rem); letter-spacing: -.03em; }
body.manual h2 { font-size: 1.45rem; margin-top: 2.6rem; }
body.manual h3 { font-size: 1.13rem; margin-top: 1.8rem; }
body.manual p, body.manual li { max-width: 72ch; }
body.manual table { font-size: .9rem; }
body.manual .table { border: 1px solid var(--line); border-radius: 12px; background: var(--card); }
body.manual th { background: var(--paper-deep); }
body.manual td, body.manual th { padding: 9px 12px; }
body.manual figure.shot img { width: min(100%, 620px); }
body.manual figure img { border-radius: 10px; }
body.manual .status { background: var(--card); border: 1px solid var(--line); }
body.manual .callout { background: var(--accent-soft); border-color: var(--accent); }
body.manual nav.contents { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; }
body.manual nav.contents ol { columns: 2 15rem; }
.manual-foot { margin-top: 54px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
.manual-foot a { color: var(--accent-dark); }

@media (max-width: 860px) {
  .hero, .split { grid-template-columns: 1fr; }
  .hero { padding-top: 46px; }
  .cards, .steps { grid-template-columns: 1fr; }
  .source-grid { grid-template-columns: 1fr; }
  .navlinks { gap: 4px 10px; font-size: .84rem; }
  .cta .actions { margin-left: 0; }
}
@media (max-width: 560px) {
  .wrap { width: calc(100% - 28px); }
  .navwrap { align-items: flex-start; padding: 10px 0; flex-direction: column; gap: 8px; }
  .navlinks { margin-left: 0; }
  .hero h1 { font-size: clamp(2.9rem, 17vw, 4.2rem); }
  .btn { width: 100%; }
}