/* The app's colours: lavender mist by day, lens navy at night, iris for links. */
:root {
  --page: #f2f1f9; --card: #ffffff; --ink: #1c1d2e; --mute: #5d5f73; --line: #e3e2ef; --accent: #5753c6;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --page: #0b0c18; --card: #161728; --ink: #eceaf6; --mute: #a4a5b8; --line: #26273d; --accent: #b1a9ff; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--page); color: var(--ink); }
body { font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
a { color: var(--accent); }
.top { max-width: 760px; margin: 0 auto; padding: 20px 16px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; }
.doc { max-width: 760px; margin: 16px auto 40px; padding: 28px 24px; background: var(--card); border-radius: 24px; }
.doc h1 { font-size: 34px; line-height: 1.2; margin: 0 0 4px; }
.doc h2 { font-size: 22px; margin: 32px 0 8px; }
.doc h3 { font-size: 18px; margin: 20px 0 6px; }
.doc ul { padding-left: 22px; }
.doc li { margin: 6px 0; }
.meta, .small { color: var(--mute); font-size: 15px; }
.hero { min-height: 80vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 40px 20px; }
.hero h1 { font-size: 40px; margin: 16px 0 8px; }
.lede { max-width: 540px; font-size: 19px; color: var(--mute); }
.lens { animation: breathe 3.6s ease-in-out infinite; }
@keyframes breathe { 50% { transform: scale(1.04); } }
.foot { text-align: center; padding: 24px 16px 40px; color: var(--mute); font-size: 15px; }
@media (max-width: 520px) { .doc { border-radius: 0; margin: 12px 0 24px; padding: 22px 16px; } }