:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #16191d;
  --muted: #5b6470;
  --line: #dfe3e8;
  --accent: #b4231f;
  --accent-ink: #ffffff;
  --code: #eef1f4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a;
    --panel: #1c2024;
    --ink: #e8eaed;
    --muted: #98a2ae;
    --line: #2c3238;
    --accent: #e04a44;
    --accent-ink: #14171a;
    --code: #23282d;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 3rem 1.25rem 4rem;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
}

main { max-width: 44rem; margin: 0 auto; }

.hero { margin-bottom: 2.5rem; }

h1 {
  font-size: clamp(2.1rem, 6vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 1.25rem;
}

h2 {
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  margin: 0 0 .9rem;
}

.lede {
  font-size: 1.12rem;
  color: var(--muted);
  margin: 0 0 1rem;
}

section { margin-bottom: 2.75rem; }

p { margin: 0 0 .85rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent); }

.cta {
  display: flex;
  gap: .7rem;
  flex-wrap: wrap;
  margin: 1.75rem 0 .85rem;
}

.button {
  display: inline-block;
  font-weight: 650;
  text-decoration: none;
  padding: .75rem 1.35rem;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
}

.button:hover { border-color: var(--muted); }

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.shot {
  margin: 0 0 2.75rem;
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.shot.narrow { max-width: 34rem; }

.shot.clip video {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #000;
}

.shot.clip figcaption strong {
  display: block;
  color: var(--ink);
  margin-bottom: .25rem;
}

/* Screenshot tour. The phone shots are tall and narrow, so they go in a grid
   that collapses to one column rather than being scaled down until the text
   inside them is unreadable. */
.screens {
  display: grid;
  gap: 1.6rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.screens li { margin: 0; }

.screens img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #0a0f16;
}

.screens .cap {
  display: block;
  margin-top: .7rem;
  font-size: .88rem;
  color: var(--muted);
}

.screens .cap strong {
  display: block;
  color: var(--ink);
  font-size: .95rem;
  margin-bottom: .15rem;
}

/* The grapher is a wide shot; give it the full column above the phone grid. */
.shot.wide { margin-bottom: 1.8rem; }

figcaption {
  margin-top: .6rem;
  font-size: .88rem;
  color: var(--muted);
}

ul.features {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

ul.features strong { display: block; }

ul.plain { margin: 0; padding-left: 1.2rem; }
ul.plain li { margin-bottom: .45rem; }
ul.plain li:last-child { margin-bottom: 0; }

code {
  background: var(--code);
  padding: .12em .38em;
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .88em;
}

.help {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.4rem;
}

.fine {
  font-size: .87rem;
  color: var(--muted);
  line-height: 1.55;
}

footer {
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
  margin-top: 3rem;
}

footer p:first-child { margin-bottom: 1rem; }