:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #606873;
  --border: #dfe3e8;
  --accent: #1f5eff;
  --accent-dark: #1547c8;
  --soft: #eef3ff;
  --good: #146c43;
  --warn: #8a5a00;
  --danger: #9b1c1c;
  --radius: 16px;
  --shadow: 0 10px 34px rgba(20, 28, 45, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--accent); }
.container { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(760px, calc(100% - 32px)); margin: 0 auto; }

header { padding: 20px 0; }
.brand { font-weight: 800; letter-spacing: -0.02em; }

.hero { padding: 64px 0 34px; text-align: center; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid #c9d6ff;
  background: var(--soft);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  color: #27418f;
}
h1 { font-size: clamp(34px, 6vw, 62px); line-height: 1.08; letter-spacing: -0.045em; margin: 22px auto 18px; max-width: 900px; }
.lead { font-size: clamp(18px, 2.2vw, 23px); color: var(--muted); max-width: 760px; margin: 0 auto 26px; }
.micro { font-size: 13px; color: var(--muted); margin-top: 10px; }

button, .button {
  appearance: none;
  border: 0;
  cursor: pointer;
  border-radius: 12px;
  padding: 14px 20px;
  font: inherit;
  font-weight: 800;
  background: var(--accent);
  color: white;
  text-decoration: none;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  transition: .18s ease;
}
button:hover, .button:hover { background: var(--accent-dark); }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid rgba(31,94,255,.24); outline-offset: 2px; }
button.secondary { background: #e8ebef; color: #20242b; }
button.secondary:hover { background: #dce0e5; }
button[disabled] { opacity: .55; cursor: not-allowed; }

.section { padding: 34px 0; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(20px, 4vw, 34px);
}
.demo-badge { display: inline-block; padding: 4px 9px; border-radius: 8px; background: #fff4df; color: #805000; font-size: 12px; font-weight: 800; }
.demo-grid, .trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 20px; }
.metric { border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.metric strong { display: block; font-size: 22px; margin-top: 4px; }
.trust-grid .metric strong { font-size: 16px; line-height: 1.35; letter-spacing: -0.02em; }
.trust-grid .metric span { font-size: 12px; }
.trust-grid .metric { min-height: 112px; }
.metric span { color: var(--muted); font-size: 13px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.step b { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--soft); color: #27418f; margin-bottom: 10px; }

.panel { margin: 28px auto 50px; }
.panel h2 { margin-top: 0; letter-spacing: -.025em; }
.field { margin: 18px 0; }
.field label { display: block; font-weight: 750; margin-bottom: 7px; }
select, input[type="email"] {
  width: 100%;
  border: 1px solid #cfd5dc;
  background: white;
  border-radius: 10px;
  padding: 13px 14px;
  font: inherit;
  color: var(--text);
}
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.notice { padding: 14px 16px; border-radius: 12px; background: #f1f5f9; color: #3b4450; }
.notice strong { color: var(--text); }
.price { font-size: 46px; line-height: 1; letter-spacing: -.04em; margin: 12px 0 6px; }
.price small { font-size: 17px; color: var(--muted); letter-spacing: normal; }
.feature-list { padding-left: 20px; }
.check { display: flex; gap: 9px; align-items: flex-start; margin: 9px 0; }
.check::before { content: "✓"; color: var(--good); font-weight: 900; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; margin-top: 12px; }
.consent input { margin-top: 5px; }
.error { color: var(--danger); font-size: 14px; margin-top: 8px; min-height: 1.5em; }
.success { color: var(--good); font-weight: 800; }
.hidden { display: none !important; }

footer { border-top: 1px solid var(--border); margin-top: 60px; padding: 28px 0 46px; color: var(--muted); font-size: 14px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }

@media (max-width: 780px) {
  .hero { padding-top: 42px; }
  .demo-grid, .trust-grid, .steps { grid-template-columns: 1fr; }
  .actions button { width: 100%; }
}