:root {
  --bg: #fbfaf8; --surface: #fff; --line: #e7e2da;
  --ink: #1c1a17; --muted: #6b645b; --accent: #1f6f5c; --accent-soft: #e8f2ee;
  --warn: #b4472a; --radius: 14px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14130f; --surface: #1c1a17; --line: #2e2a25;
    --ink: #f2efe9; --muted: #a49c91; --accent: #6fc4aa; --accent-soft: #1b2b26;
    --warn: #e0805f;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font);
  line-height: 1.65; -webkit-font-smoothing: antialiased; }
.wrap { max-width: 1060px; margin: 0 auto; padding: 0 24px; }
a { color: var(--accent); }

header { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { font-weight: 700; font-size: 1.3rem; letter-spacing: -.02em; text-decoration: none; color: var(--ink); }
.logo span { color: var(--accent); }
nav a { margin-left: 26px; text-decoration: none; color: var(--muted); font-size: .94rem; }
nav a:hover { color: var(--ink); }

.hero { padding: 88px 0 64px; }
.hero h1 { font-size: clamp(2.1rem, 5.2vw, 3.4rem); line-height: 1.12; letter-spacing: -.03em;
  margin: 0 0 20px; max-width: 17ch; }
.hero p.lead { font-size: 1.18rem; color: var(--muted); max-width: 56ch; margin: 0 0 32px; }
.badge { display: inline-block; background: var(--accent-soft); color: var(--accent);
  padding: 5px 13px; border-radius: 999px; font-size: .82rem; font-weight: 600; margin-bottom: 22px; }
.btn { display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  padding: 13px 26px; border-radius: 10px; font-weight: 600; border: 0; cursor: pointer; font-size: 1rem; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); margin-left: 10px; }

section { padding: 60px 0; border-top: 1px solid var(--line); }
h2 { font-size: 1.75rem; letter-spacing: -.02em; margin: 0 0 12px; }
.sub { color: var(--muted); max-width: 60ch; margin: 0 0 34px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 18px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.stat b { display: block; font-size: 1.9rem; letter-spacing: -.02em; color: var(--warn); }
.stat span { color: var(--muted); font-size: .9rem; }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; counter-reset: s; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.step::before { counter-increment: s; content: counter(s); display: grid; place-items: center;
  width: 34px; height: 34px; border-radius: 50%; background: var(--accent-soft); color: var(--accent);
  font-weight: 700; margin-bottom: 14px; }
.step h3 { margin: 0 0 8px; font-size: 1.06rem; }
.step p { margin: 0; color: var(--muted); font-size: .95rem; }

.feat { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.feat div { padding: 20px 0; }
.feat h3 { margin: 0 0 6px; font-size: 1.02rem; }
.feat p { margin: 0; color: var(--muted); font-size: .95rem; }

.price { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px; max-width: 430px; }
.price .amount { font-size: 2.6rem; font-weight: 700; letter-spacing: -.03em; }
.price .amount small { font-size: 1rem; font-weight: 400; color: var(--muted); }
.price ul { list-style: none; padding: 0; margin: 20px 0 26px; }
.price li { padding: 7px 0 7px 26px; position: relative; color: var(--muted); font-size: .95rem; }
.price li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }

details { border-bottom: 1px solid var(--line); padding: 16px 0; }
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 10px 0 0; }

.note { background: var(--accent-soft); border-radius: var(--radius); padding: 20px 24px;
  color: var(--ink); font-size: .95rem; }

footer { border-top: 1px solid var(--line); padding: 40px 0; color: var(--muted); font-size: .9rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 18px; justify-content: space-between; }
footer a { color: var(--muted); margin-right: 18px; }

.prose { max-width: 70ch; padding: 48px 0; }
.prose h1 { font-size: 2rem; letter-spacing: -.02em; }
.prose h2 { font-size: 1.2rem; margin-top: 32px; }
.todo { background: #fff4e5; border-left: 3px solid #d98324; color: #6b4a12;
  padding: 14px 18px; border-radius: 8px; margin: 18px 0; font-size: .93rem; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .todo { background: #2e2413; color: #e8c893; }
}