:root {
  --green: #0f6e56;
  --green-dark: #0a5241;
  --ink: #1b1f1d;
  --muted: #5b6460;
  --line: #e2e6e4;
  --bg: #ffffff;
  --soft: #f4f7f5;
}

* { box-sizing: border-box; }

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

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

.wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }

header.top {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 22px 0;
}
header.top a.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 19px;
}
header.top img { width: 34px; height: 34px; }

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 40px 0 64px;
}
.hero h1 {
  font-size: 46px;
  line-height: 1.1;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}
.hero p.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; }
.hero figure { margin: 0; }
.hero figure img {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--line);
  box-shadow: 0 12px 40px rgba(15, 110, 86, 0.12);
}
.hero figcaption { font-size: 14px; color: var(--muted); margin-top: 10px; }

.btn {
  display: inline-block;
  background: var(--green);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 14px 26px;
  border-radius: 999px;
}
.btn:hover { background: var(--green-dark); }
.btn.disabled { background: #9aa8a2; cursor: default; }
.note { display: block; font-size: 14px; color: var(--muted); margin-top: 10px; }

section.band { background: var(--soft); padding: 64px 0; }
section.plain { padding: 64px 0; }
section h2 { font-size: 30px; margin: 0 0 28px; letter-spacing: -0.01em; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
}
.step .num {
  display: inline-flex;
  width: 32px; height: 32px;
  align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  font-weight: 700;
  margin-bottom: 12px;
}
.step h3 { margin: 0 0 6px; font-size: 19px; }
.step p { margin: 0; color: var(--muted); }

.support {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px;
  max-width: 640px;
}
.support p { margin: 0 0 14px; }
.support .price { font-size: 28px; font-weight: 700; margin: 4px 0 14px; }

footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  font-size: 15px;
  color: var(--muted);
}
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
footer nav { display: flex; gap: 20px; }

.doc { max-width: 720px; padding: 24px 0 64px; }
.doc h1 { font-size: 38px; margin: 10px 0 6px; }
.doc .updated { color: var(--muted); margin: 0 0 32px; }
.doc h2 { font-size: 22px; margin: 36px 0 10px; }
.doc ul { padding-left: 22px; }
.doc li { margin-bottom: 6px; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .hero { grid-template-columns: 1fr; gap: 32px; padding: 16px 0 48px; }
  .hero h1 { font-size: 34px; }
  .steps { grid-template-columns: 1fr; }
  section.band, section.plain { padding: 48px 0; }
  .support { padding: 24px; }
}