:root {
  --navy: #173257;
  --navy-2: #22487a;
  --steel-bg: #f1f4f8;
  --surface: #ffffff;
  --line: #d6dee8;
  --ink: #1b2533;
  --ink-2: #4a5768;
  --blue: #2471c8;
  --blue-ink: #ffffff;
  --sky: #7cc4ff;
  --green: #17824a;
  --amber: #a8700a;
  --amber-bg: #fdf3dc;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 32, 56, .06), 0 8px 24px rgba(16, 32, 56, .08);
  --sans: "IBM Plex Sans", system-ui, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --steel-bg: #0f1a2b;
    --surface: #16243a;
    --line: #26385a;
    --ink: #e6edf6;
    --ink-2: #a5b3c6;
    --blue: #3b8be0;
    --green: #4fd08a;
    --amber: #f2c14e;
    --amber-bg: #3a2f14;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .3);
  }
}
:root[data-theme="dark"] {
  --steel-bg: #0f1a2b;
  --surface: #16243a;
  --line: #26385a;
  --ink: #e6edf6;
  --ink-2: #a5b3c6;
  --blue: #3b8be0;
  --green: #4fd08a;
  --amber: #f2c14e;
  --amber-bg: #3a2f14;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .3);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--steel-bg);
  color: var(--ink);
  font: 400 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); letter-spacing: -.01em; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
a { color: var(--blue); }

.wrap { width: min(1160px, 100% - 32px); margin-inline: auto; }

/* Header band, like the app's title bar */
.bar { background: linear-gradient(180deg, var(--navy-2), var(--navy)); color: #fff; }
.bar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.mark { color: #fff; text-decoration: none; font-weight: 700; letter-spacing: .12em; font-size: 1.05rem; white-space: nowrap; }
.mark span { color: var(--sky); }
.bar-cta { color: #fff; text-decoration: none; font-weight: 500; font-size: .95rem; border: 1px solid rgba(255,255,255,.35); padding: 7px 14px; border-radius: 8px; white-space: nowrap; }
.bar-cta:hover { background: rgba(255,255,255,.1); }

.btn {
  display: inline-block; background: var(--blue); color: var(--blue-ink);
  font: 600 1rem var(--sans); text-decoration: none; border: 0; cursor: pointer;
  padding: 13px 26px; border-radius: 8px; box-shadow: 0 2px 6px rgba(36, 113, 200, .3);
}
.btn:hover { filter: brightness(1.08); }
.btn:focus-visible, .bar-cta:focus-visible, input:focus-visible { outline: 3px solid var(--sky); outline-offset: 2px; }
.btn[disabled] { opacity: .6; cursor: wait; }

/* Hero */
.hero { padding: clamp(40px, 7vw, 88px) 0 clamp(32px, 5vw, 56px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(28px, 4vw, 56px); align-items: center; }
.eyebrow { color: var(--amber); font-weight: 600; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: .8em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); letter-spacing: -.02em; }
.lede { font-size: 1.15rem; color: var(--ink-2); }
.facts { list-style: none; padding: 0; margin: 0 0 1.6em; display: flex; flex-wrap: wrap; gap: 8px; }
.facts li { font-size: .9rem; font-weight: 500; padding: 5px 12px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); }

.shot { margin: 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); background: var(--surface); }

/* The reading strip: a big mic-style number */
.readout { background: var(--navy); color: #dfe8f3; border-block: 1px solid var(--line); }
.readout-inner { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: center; gap: 10px 20px; padding: 22px 0; font-family: var(--mono); }
.ro-label { font-size: .95rem; opacity: .85; }
.ro-arrow { opacity: .6; }
.ro-value { font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 600; color: #5fe39c; }
.ro-value small { font-size: .9rem; font-weight: 500; color: #dfe8f3; opacity: .85; }

/* Features */
.features, .editions { padding: clamp(48px, 7vw, 88px) 0 0; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 24px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 26px; }
.card h3 { color: var(--ink); }
.card p { color: var(--ink-2); margin: 0; }
.card::before { content: ""; display: block; width: 32px; height: 3px; background: var(--blue); border-radius: 2px; margin-bottom: 16px; }

/* Editions */
.ed-grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: 18px; margin-top: 24px; align-items: start; }
.ed { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.ed h3 { font-size: 1.5rem; margin-bottom: .1em; display: flex; align-items: center; gap: 10px; }
.ed-sub { color: var(--ink-2); font-size: .95rem; }
.ed ul { margin: 0; padding-left: 1.2em; }
.ed li { margin-bottom: .35em; }
.tag { font-size: .75rem; font-weight: 600; color: var(--amber); background: var(--amber-bg); border: 1px solid var(--amber); padding: 2px 9px; border-radius: 999px; letter-spacing: .04em; }
.ed-shot { margin-top: 22px; }

/* Pilot signup */
.pilot { padding: clamp(48px, 7vw, 88px) 0; }
.pilot-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 4vw, 56px); align-items: start; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: clamp(24px, 4vw, 44px); box-shadow: var(--shadow); }
.pilot p { color: var(--ink-2); }
.fine { font-size: .88rem; }
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 6px; font-weight: 500; font-size: .95rem; }
.opt { color: var(--ink-2); font-weight: 400; }
.form input[type="email"], .form input[type="text"] {
  font: 400 1rem var(--sans); color: var(--ink); background: var(--steel-bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 11px 12px; width: 100%;
}
fieldset { border: 0; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; }
legend { font-weight: 500; font-size: .95rem; margin-bottom: 6px; padding: 0; }
.form .radio { display: flex; align-items: center; gap: 7px; font-weight: 400; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.status { min-height: 1.6em; margin: 0; font-weight: 500; }
.status.ok { color: var(--green); }
.status.err { color: #c0392b; }

.foot { border-top: 1px solid var(--line); padding: 24px 0 32px; color: var(--ink-2); font-size: .9rem; }
.foot-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }

@media (max-width: 860px) {
  .hero-grid, .ed-grid, .pilot-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
}
@media (max-width: 420px) {
  .mark { font-size: .9rem; letter-spacing: .08em; }
  .bar-cta { padding: 6px 10px; font-size: .85rem; }
}