:root {
  --bg: #ffffff;
  --soft: #f6f7f9;
  --text: #111827;
  --muted: #5b6472;
  --line: #e5e7eb;
  --accent: #16a34a;
  --accent-text: #ffffff;
  --accent-soft: #dcfce7;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f17;
    --soft: #121826;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --line: #243042;
    --accent: #22c55e;
    --accent-text: #052e12;
    --accent-soft: #12351f;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }
header.site { border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; align-items: center; gap: 10px; height: 60px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 20px; color: var(--text); text-decoration: none; }
nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--text); }
.hero { padding: 64px 0 40px; }
.hero h1 { font-size: clamp(32px, 6vw, 48px); line-height: 1.1; margin: 0 0 16px; }
.hero p { font-size: 20px; color: var(--muted); margin: 0 0 24px; max-width: 640px; }
.btn { display: inline-block; background: var(--accent); color: var(--accent-text); font-weight: 600; padding: 12px 20px; border-radius: 10px; text-decoration: none; border: 0; font-size: 16px; cursor: pointer; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 24px 0 48px; }
.card { background: var(--soft); border: 1px solid var(--line); border-radius: 14px; padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
section { padding: 8px 0 32px; }
h2 { font-size: 26px; margin: 24px 0 12px; }
ol.steps { padding-left: 20px; }
ol.steps li { margin-bottom: 8px; }
.doc { padding: 40px 0 64px; }
.doc h1 { font-size: 34px; margin: 0 0 4px; }
.doc h2 { font-size: 21px; margin: 32px 0 8px; }
.doc .updated { color: var(--muted); margin: 0 0 24px; }
.callout { background: var(--accent-soft); border-left: 4px solid var(--accent); padding: 12px 16px; border-radius: 8px; margin: 16px 0; }
form.optin { background: var(--soft); border: 1px solid var(--line); border-radius: 14px; padding: 20px; max-width: 520px; }
form.optin label { display: block; font-weight: 600; margin: 12px 0 4px; font-size: 15px; }
form.optin input[type=text], form.optin input[type=tel] { width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; font: inherit; background: var(--bg); color: var(--text); }
form.optin .consent { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: 14px; color: var(--muted); margin: 16px 0; }
form.optin .consent input { margin-top: 4px; flex: none; width: 18px; height: 18px; }
.msg { margin-top: 12px; font-size: 15px; }
footer { border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer a { color: var(--muted); }
@media (max-width: 560px) {
  nav { gap: 12px; font-size: 14px; }
  .hero { padding: 40px 0 24px; }
}