:root {
  --ink: #1a2332;
  --muted: #5a6a7e;
  --accent: #e8590c;
  --accent-dark: #c44f08;
  --bg: #ffffff;
  --alt: #f4f6f9;
  --line: #dde3ea;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }

.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: var(--bg); z-index: 10;
}
.header-inner { display: flex; justify-content: space-between; align-items: center; padding-top: 14px; padding-bottom: 14px; }
.logo { font-weight: 800; font-size: 1.25rem; letter-spacing: -0.02em; }
nav a { color: var(--muted); text-decoration: none; margin-left: 22px; font-size: 0.95rem; }
nav a:hover { color: var(--ink); }

.hero { padding: 84px 0 64px; text-align: center; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.1rem); line-height: 1.15; letter-spacing: -0.02em; max-width: 720px; margin: 0 auto 20px; }
.hero .sub { color: var(--muted); font-size: 1.13rem; max-width: 640px; margin: 0 auto 30px; }

.btn {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  padding: 14px 30px; border-radius: 999px; font-weight: 700; font-size: 1.02rem;
}
.btn:hover { background: var(--accent-dark); }
.fineprint { color: var(--muted); font-size: 0.88rem; margin-top: 14px; }

.section { padding: 64px 0; }
.section.alt { background: var(--alt); }
.section h2 { font-size: 1.8rem; letter-spacing: -0.01em; margin-bottom: 28px; text-align: center; }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.step { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; }
.step-num {
  width: 36px; height: 36px; border-radius: 50%; background: var(--accent); color: #fff;
  font-weight: 800; display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
}
.step h3 { margin-bottom: 8px; font-size: 1.08rem; }
.step p { color: var(--muted); font-size: 0.98rem; }

.offer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-bottom: 24px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; }
.card.highlight { border: 2px solid var(--accent); }
.card h3 { margin-bottom: 10px; }
.price { font-size: 2rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 8px; }
.price span { font-size: 1rem; font-weight: 500; color: var(--muted); }
.card p { color: var(--muted); }

.guarantee { background: #fff; border: 1px solid var(--line); border-left: 5px solid var(--accent); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; }
.guarantee h3 { margin-bottom: 6px; }
.guarantee p { color: var(--muted); }
.includes { text-align: center; color: var(--muted); }
.includes strong { color: var(--ink); }

.demo-flow { max-width: 680px; margin: 0 auto 20px; padding-left: 22px; }
.demo-flow li { margin-bottom: 14px; }
.section > .wrap > p { max-width: 680px; margin: 0 auto 20px; color: var(--muted); text-align: center; }
.section > .wrap > p:last-child { margin-bottom: 0; }

.contact { text-align: center; }
.contact p { color: var(--muted); margin-bottom: 22px; }

footer { border-top: 1px solid var(--line); padding: 26px 0; text-align: center; color: var(--muted); font-size: 0.92rem; }

@media (max-width: 600px) {
  nav a { margin-left: 13px; font-size: 0.88rem; }
  .hero { padding: 56px 0 44px; }
  .section { padding: 46px 0; }
}