:root {
  --bg: #ffffff;
  --surface: #f6f7f9;
  --text: #14171f;
  --muted: #5b6372;
  --border: #e3e6eb;
  --brand: #1d2a4d;
  --accent: #f5b400;
  --accent-ink: #14171f;
  --link: #2450c7;
  --radius: 12px;
  --max: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f131c;
    --surface: #171c28;
    --text: #eef0f4;
    --muted: #a3abba;
    --border: #283042;
    --brand: #eef0f4;
    --link: #8fb0ff;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  font-size: 17px;
}

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

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); }
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding-top: 16px; padding-bottom: 16px; flex-wrap: wrap;
}
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 20px; color: var(--brand); text-decoration: none;
  letter-spacing: -0.01em;
}
.logo img { display: block; height: 40px; width: auto; }
.logo .wordmark {
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-weight: 800;
  text-transform: uppercase; font-size: 14px; line-height: 1.15; letter-spacing: 0.04em;
  text-align: center;
}
.nav { display: flex; gap: 20px; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }

/* Hero */
.hero { padding: 72px 0 56px; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 12px;
}
.hero h1 {
  font-size: clamp(34px, 6vw, 56px); line-height: 1.08; margin: 0 0 18px;
  letter-spacing: -0.02em; max-width: 16ch;
}
.hero h1 .hl { background: linear-gradient(transparent 62%, var(--accent) 62%); }
@media (prefers-color-scheme: dark) {
  .hero h1 .hl { background: none; color: var(--accent); }
}
.hero p.lead { font-size: 20px; color: var(--muted); max-width: 46ch; margin: 0 0 28px; }

.btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink);
  font-weight: 700; text-decoration: none; padding: 12px 22px; border-radius: 999px;
  border: 0; font-size: 16px; cursor: pointer;
}
.btn:hover { filter: brightness(0.95); }
.btn.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); margin-left: 8px; }

/* Sections */
section.block { padding: 48px 0; border-top: 1px solid var(--border); }
section.block h2 { font-size: 28px; margin: 0 0 8px; letter-spacing: -0.01em; }
section.block > .wrap > p.sub { color: var(--muted); margin: 0 0 28px; max-width: 60ch; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px;
}
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.tag {
  display: inline-block; font-size: 12px; font-weight: 700; padding: 2px 10px;
  border-radius: 999px; background: var(--bg); border: 1px solid var(--border);
  color: var(--muted); margin-bottom: 10px;
}

.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps li { counter-increment: step; position: relative; padding: 0 0 18px 44px; }
.steps li::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: var(--accent-ink);
  font-weight: 800; display: grid; place-items: center; font-size: 15px;
}
.steps strong { display: block; }
.steps span { color: var(--muted); }

/* Signup */
.signup { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.signup h2 { margin-top: 0; }

/* Content pages */
.page { padding: 48px 0 64px; }
.page h1 { font-size: clamp(30px, 5vw, 42px); margin: 0 0 8px; letter-spacing: -0.02em; }
.page .updated { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
.page h2 { font-size: 21px; margin: 32px 0 8px; }
.page .prose { max-width: 70ch; }
.notice {
  background: var(--surface); border-left: 4px solid var(--accent); padding: 12px 16px;
  border-radius: 6px; color: var(--muted); font-size: 15px; margin: 0 0 24px;
}

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .hero { padding: 48px 0 40px; }
  .btn.secondary { margin: 10px 0 0; }
}