:root {
  --bg: #ffffff; --fg: #1f2328; --muted: #59636e; --line: #e3e6ea;
  --accent: #1a73e8; --accent-fg: #ffffff; --soft: #f5f7fa; --ok: #1a7f37; --err: #cf222e;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418; --fg: #e6e8eb; --muted: #9aa4af; --line: #2a3038;
    --accent: #6ea8fe; --accent-fg: #0b1320; --soft: #181c22; --ok: #4ac26b; --err: #ff7b72;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
.top { border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--fg); text-decoration: none; }
nav a { margin-left: 16px; color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--fg); }
.prose { padding-top: 32px; padding-bottom: 48px; }
.prose h1 { font-size: clamp(28px, 5vw, 40px); line-height: 1.15; margin: 8px 0 12px; letter-spacing: -0.02em; }
.prose h2 { font-size: 24px; margin: 44px 0 10px; line-height: 1.25; }
.prose h3 { font-size: 18px; margin: 28px 0 6px; }
.prose img { max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 8px; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.prose th { background: var(--soft); }
.prose code { background: var(--soft); padding: 1px 5px; border-radius: 4px; font-size: 0.9em; }
.prose blockquote { margin: 16px 0; padding: 8px 16px; border-left: 3px solid var(--accent); background: var(--soft); color: var(--fg); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 36px 0; }
.prose a.btn { display: inline-block; background: var(--accent); color: var(--accent-fg); text-decoration: none;
  padding: 10px 18px; border-radius: 8px; font-weight: 600; margin: 4px 0; }
.waitlist { background: var(--soft); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin: 20px 0; }
.waitlist label { display: block; font-weight: 600; margin-bottom: 6px; }
.waitlist .row { display: flex; gap: 8px; flex-wrap: wrap; }
.waitlist input[type=email] { flex: 1 1 220px; min-width: 0; font: inherit; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg); color: var(--fg); }
.waitlist button { font: inherit; font-weight: 600; padding: 10px 18px; border-radius: 8px; border: 0;
  background: var(--accent); color: var(--accent-fg); cursor: pointer; }
.waitlist button[disabled] { opacity: .6; cursor: default; }
.waitlist .hp { position: absolute; left: -10000px; width: 1px; height: 1px; opacity: 0; }
.form-msg { min-height: 1.4em; margin: 8px 0 0; font-size: 15px; }
.form-msg.ok { color: var(--ok); } .form-msg.err { color: var(--err); }
.foot { border-top: 1px solid var(--line); padding-top: 16px; padding-bottom: 32px; color: var(--muted); font-size: 14px; }
.foot p { margin: 4px 0; } .foot a { color: var(--muted); }
.prose pre { background: var(--soft); border: 1px solid var(--line); border-radius: 8px; padding: 12px; overflow-x: auto;
  white-space: pre-wrap; overflow-wrap: anywhere; font-size: 14px; }
.prose pre code { background: none; padding: 0; }
.prose p, .prose li { overflow-wrap: anywhere; }