:root {
  --bg: #fff7f1;
  --card: #ffffff;
  --ink: #221713;
  --muted: #74655f;
  --accent: #f15a24;
  --accent-dark: #c64013;
  --line: #f1d7c7;
  --soft: #fff0e7;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, #ffe5d4 0, transparent 32%),
    linear-gradient(180deg, var(--bg), #fff);
  min-height: 100vh;
}

.wrap {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
  padding: 58px 0 34px;
}

.hero-card {
  background: rgba(255,255,255,.92);
  border: 1px solid var(--line);
  border-radius: 30px;
  box-shadow: 0 22px 70px rgba(114, 52, 19, .12);
  padding: clamp(28px, 5vw, 56px);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-card::after {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  right: -80px;
  top: -90px;
  border-radius: 999px;
  background: rgba(241,90,36,.12);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--accent-dark);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: .03em;
}

h1 {
  font-size: clamp(36px, 7vw, 62px);
  line-height: 1.05;
  margin: 22px 0 12px;
  letter-spacing: -0.05em;
}

.lead {
  color: var(--muted);
  margin: 0 auto 26px;
  max-width: 620px;
  font-size: 18px;
  line-height: 1.65;
}

.code-box {
  width: min(520px, 100%);
  margin: 0 auto 18px;
  display: flex;
  gap: 10px;
  padding: 12px;
  border: 2px dashed #f3b28f;
  border-radius: 20px;
  background: #fffaf7;
}

.code-box span {
  flex: 1;
  display: grid;
  place-items: center;
  min-height: 58px;
  border-radius: 14px;
  background: #fff;
  font-size: clamp(28px, 6vw, 44px);
  font-weight: 900;
  letter-spacing: .08em;
  color: var(--accent-dark);
}

button, .cta {
  border: 0;
  cursor: pointer;
  font-weight: 900;
  border-radius: 14px;
  text-decoration: none;
}

#copyBtn {
  background: var(--accent);
  color: #fff;
  padding: 0 20px;
  font-size: 16px;
}

#copyBtn:hover, .cta:hover { filter: brightness(.96); }

.copy-msg {
  height: 24px;
  color: var(--accent-dark);
  font-weight: 700;
  margin: 0 0 12px;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 26px;
  color: #fff;
  background: var(--ink);
  margin-top: 4px;
}

.note {
  margin: 18px auto 0;
  max-width: 640px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 22px;
}

.info-card, .steps, .faq {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 12px 34px rgba(114, 52, 19, .07);
}

.info-card { padding: 24px; }
.info-card h2, .steps h2, .faq h2 {
  margin: 0 0 12px;
  letter-spacing: -0.03em;
}
.info-card p, .steps li, .faq p {
  color: var(--muted);
  line-height: 1.7;
}

.steps, .faq {
  margin-top: 18px;
  padding: clamp(24px, 4vw, 34px);
}

.steps ol {
  margin: 0;
  padding-left: 22px;
}
.steps li + li { margin-top: 8px; }

.faq details {
  border-top: 1px solid var(--line);
  padding: 16px 0;
}
.faq details:first-of-type { border-top: 0; }
.faq summary {
  cursor: pointer;
  font-weight: 900;
}
.faq p { margin-bottom: 0; }

.footer {
  text-align: center;
  padding: 10px 16px 38px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 760px) {
  .wrap { padding-top: 30px; }
  .grid { grid-template-columns: 1fr; }
  .code-box { flex-direction: column; }
  #copyBtn { min-height: 52px; }
}