:root {
  color-scheme: light dark;
  --bg: #f4f4f2; --surface: #fcfcfb; --border: #e3e2de;
  --text: #0b0b0b; --text-2: #52514e; --muted: #6f6e69;
  --accent: #2a78d6; --accent-text: #fff; --bad: #b3261e; --good: #1f7a3a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111110; --surface: #1a1a19; --border: #2c2c2a;
    --text: #f0efec; --text-2: #c3c2b7; --muted: #9a9990;
    --accent: #3987e5; --accent-text: #08121f; --bad: #f07a72; --good: #5cc27a;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif; }
a { color: var(--accent); }
.wrap { width: 100%; max-width: 760px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.bar { padding-top: 20px; padding-bottom: 8px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.login { color: var(--text-2); text-decoration: none; font-size: 15px; font-weight: 550; padding: 6px 12px; border: 1px solid var(--border); border-radius: 8px; }
.login:hover { color: var(--text); border-color: var(--muted); }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 650; font-size: 18px; color: var(--text); text-decoration: none; }
.brand svg { color: var(--accent); }

.hero { padding-top: 56px; padding-bottom: 40px; }
h1 { font-size: clamp(32px, 7vw, 52px); line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 20px; }
h2 { font-size: 21px; line-height: 1.25; margin: 0 0 8px; letter-spacing: -0.01em; }
.lede { font-size: clamp(18px, 3.2vw, 21px); color: var(--text-2); margin: 0 0 28px; max-width: 34em; }

.signup .row { display: flex; gap: 8px; flex-wrap: wrap; }
.signup input[type=email] { flex: 1 1 240px; min-width: 0; padding: 13px 14px; font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 10px; }
.signup input[type=email]:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button { padding: 13px 20px; font: inherit; font-weight: 600; color: var(--accent-text); background: var(--accent); border: 0; border-radius: 10px; cursor: pointer; }
button:disabled { opacity: .6; cursor: default; }
.cf-turnstile { margin-top: 12px; min-height: 0; }
.hint { margin: 10px 0 0; font-size: 14px; color: var(--muted); }
.hint.error { color: var(--bad); }
.done { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px; background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--good); border-radius: 10px; }
.done:focus { outline: none; }
.done[hidden], form[hidden] { display: none; }

.features { display: grid; gap: 28px; padding-top: 24px; padding-bottom: 24px; border-top: 1px solid var(--border); }
.features p, .how li, .faq p { color: var(--text-2); margin: 0; }
.how { padding-top: 24px; padding-bottom: 24px; border-top: 1px solid var(--border); }
.how ol { padding-left: 22px; margin: 0 0 12px; display: grid; gap: 8px; }
.muted { color: var(--muted); }
.faq { padding-top: 24px; padding-bottom: 32px; border-top: 1px solid var(--border); }
details { border-bottom: 1px solid var(--border); padding: 12px 0; }
summary { cursor: pointer; font-weight: 600; }
details p { margin-top: 8px; }
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; padding-top: 20px; padding-bottom: 40px; font-size: 14px; color: var(--muted); border-top: 1px solid var(--border); }
.foot a { color: var(--muted); }

.prose { padding-top: 24px; padding-bottom: 40px; }
.prose h1 { font-size: 34px; }
.prose h2 { margin-top: 28px; }
.prose p, .prose li { color: var(--text-2); }
.prose ul { padding-left: 22px; display: grid; gap: 6px; }

@media (min-width: 720px) { .features { grid-template-columns: repeat(3, 1fr); gap: 24px; } .wrap { padding-left: 24px; padding-right: 24px; } }