:root {
  --bg: #ffffff; --bg2: #f5f5f7; --fg: #1d1d1f; --muted: #6e6e73; --line: #e5e5ea; --card: #ffffff;
  --accent: #5856d6; --accent-fg: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #000000; --bg2: #111113; --fg: #f5f5f7; --muted: #a1a1a6; --line: #2c2c2e; --card: #1c1c1e; --accent: #5e5ce6; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font: 0.9em ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--bg2); padding: 1px 5px; border-radius: 5px; }

.top, .bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; max-width: 1120px;
  margin: 0 auto; padding: 16px max(20px, env(safe-area-inset-left)); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--fg); font-weight: 600; font-size: 19px; }
.brand:hover { text-decoration: none; }
.brand img { width: 32px; height: 32px; }
.top nav, .bottom nav { display: flex; align-items: center; gap: 22px; font-size: 15px; }
.top nav a:not(.button) { color: var(--fg); }
.bottom { color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); margin-top: 48px; padding-top: 24px; padding-bottom: 32px; }
.bottom nav a { color: var(--muted); }

.button { display: inline-block; background: var(--accent); color: var(--accent-fg); padding: 12px 22px; border-radius: 12px;
  font-weight: 600; font-size: 16px; text-align: center; border: 0; cursor: pointer; }
.button:hover { text-decoration: none; filter: brightness(1.08); }
.button.secondary { background: var(--bg2); color: var(--fg); border: 1px solid var(--line); }
.button.small { padding: 7px 14px; font-size: 14px; border-radius: 10px; color: var(--accent-fg); }
.button[aria-disabled="true"] { opacity: .45; pointer-events: none; }

main { max-width: 1120px; margin: 0 auto; padding: 0 max(20px, env(safe-area-inset-left)); }
h1 { font-size: clamp(36px, 5.5vw, 60px); line-height: 1.07; letter-spacing: -0.02em; margin: 0 0 18px; }
h2 { font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -0.01em; margin: 0 0 28px; text-align: center; }
h3 { font-size: 20px; margin: 12px 0 6px; }
.lead { font-size: clamp(18px, 2vw, 21px); color: var(--muted); margin: 0 0 26px; }
.fine { color: var(--muted); font-size: 14px; margin-top: 14px; }

.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; padding: 56px 0 72px; }
.hero-art { width: 100%; height: auto; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }

.features { padding: 64px 0; border-top: 1px solid var(--line); }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid article { background: var(--bg2); border-radius: 18px; padding: 22px; }
.grid article img { height: 96px; width: 100%; object-fit: contain; }
.grid article p { color: var(--muted); font-size: 15px; margin: 0; }

.steps { padding: 56px 0; border-top: 1px solid var(--line); }
.steps ol { max-width: 640px; margin: 0 auto; padding-left: 1.2em; font-size: 19px; display: grid; gap: 12px; }

.download { padding: 64px 0 24px; border-top: 1px solid var(--line); }
.platforms { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.platform { background: var(--bg2); border-radius: 18px; padding: 24px; display: flex; flex-direction: column; align-items: flex-start; }
.platform img { height: 88px; width: 100%; object-fit: contain; margin-bottom: 4px; }
.platform .req { color: var(--muted); font-size: 15px; margin: 0 0 16px; min-height: 2.9em; }
.platform .button { width: 100%; }
.platform .meta { color: var(--muted); font-size: 13px; margin: 8px 0 0; min-height: 1.3em; }
.platform .note { color: var(--muted); font-size: 13px; margin: 10px 0 0; }
.platform.later { opacity: .7; }
/* The illustrations are drawn for a light ground (as the apps' own are), so in dark they sit on one. */
@media (prefers-color-scheme: dark) {
  .grid article img, .platform img { background: #e8e8ed; border-radius: 14px; padding: 10px; }
  .hero-art { background: #e8e8ed; border-radius: 24px; padding: 20px; }
}

.page { max-width: 760px; padding-top: 32px; }
.page h1 { font-size: clamp(32px, 4.5vw, 44px); }
.page h2 { text-align: left; font-size: 22px; margin: 34px 0 10px; }
.page ul, .page ol { padding-left: 1.2em; display: grid; gap: 8px; }
.page p, .page li { color: var(--fg); }

@media (max-width: 960px) {
  .grid, .platforms { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .hero { grid-template-columns: 1fr; padding-top: 28px; }
  .hero-art { order: -1; max-width: 420px; margin: 0 auto; }
  .grid, .platforms { grid-template-columns: 1fr; }
  .top nav a:not(.button) { display: none; }
  .top nav a[href="/support"] { display: none; }
}