:root {
  --bg: #fff6e8;
  --cream: #f7ead7;
  --orange: #f6a400;
  --brown: #5a2014;
  --red: #d82412;
  --text: #3a1b12;
  --muted: #876658;
  --card: #fffaf1;
  --shadow: 0 22px 50px rgba(90, 32, 20, .14);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }

.hero {
  background: linear-gradient(180deg, #fff2dc 0%, #ffb000 42%, #f7a100 100%);
  min-height: 720px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -160px;
  width: 900px;
  height: 360px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: rgba(255,255,255,.18);
}
.nav {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 2;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--brown);
  color: #fff;
  font-weight: 900;
}
.nav-link {
  font-weight: 800;
  background: rgba(255,255,255,.55);
  padding: 10px 16px;
  border-radius: 999px;
}
.hero-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 92px 20px 80px;
  text-align: center;
  position: relative;
  z-index: 2;
}
.eyebrow, .section-kicker {
  color: var(--red);
  font-weight: 900;
  letter-spacing: .02em;
  margin: 0 0 12px;
}
h1 {
  margin: 0;
  font-size: clamp(42px, 7vw, 86px);
  line-height: 1.05;
  color: var(--brown);
  letter-spacing: -0.04em;
}
h1 strong {
  display: inline-block;
  margin-top: 10px;
  padding: 6px 22px 10px;
  border-radius: 24px;
  background: #fff7e7;
  color: var(--red);
  box-shadow: var(--shadow);
}
.lead {
  max-width: 680px;
  margin: 28px auto 34px;
  font-size: 20px;
  font-weight: 700;
  color: #5a2014;
}
.code-card {
  max-width: 560px;
  margin: 0 auto;
  background: var(--card);
  border: 3px solid rgba(90, 32, 20, .08);
  border-radius: var(--radius);
  padding: 26px;
  display: grid;
  gap: 14px;
  box-shadow: var(--shadow);
}
.code-label { color: var(--muted); font-weight: 800; }
code, .big-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: clamp(32px, 6vw, 54px);
  font-weight: 900;
  color: var(--brown);
  letter-spacing: .02em;
}
.copy-btn {
  border: 0;
  border-radius: 999px;
  background: var(--brown);
  color: #fff;
  padding: 16px 26px;
  font-size: 18px;
  font-weight: 900;
  cursor: pointer;
  transition: transform .18s ease, opacity .18s ease;
}
.copy-btn:hover { transform: translateY(-2px); opacity: .94; }
.copy-message { min-height: 24px; font-weight: 800; color: var(--brown); }
.section { padding: 86px 20px; }
.container { max-width: 1080px; margin: 0 auto; }
.two-col { display: grid; grid-template-columns: 1.25fr .75fr; gap: 28px; align-items: center; }
h2 {
  margin: 0 0 18px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.intro p, .notice li { font-size: 18px; }
.flame-box {
  background: #fff;
  border-radius: var(--radius);
  padding: 34px;
  text-align: center;
  box-shadow: var(--shadow);
}
.flame { display: block; font-size: 58px; }
.flame-box strong { display: block; font-size: 40px; color: var(--red); }
.flame-box p { margin: 8px 0 0; font-weight: 800; color: var(--muted); }
.guide { background: #fff1dc; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 28px; }
.step-card, .notice-card, .cta-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}
.step-card span { color: var(--red); font-weight: 900; font-size: 22px; }
.step-card h3 { margin: 14px 0 10px; font-size: 24px; }
.step-card p { margin: 0; font-weight: 650; }
.notice-card ul { margin: 0; padding-left: 22px; }
.notice-card li + li { margin-top: 12px; }
.cta-section { padding-top: 40px; }
.cta-card { text-align: center; background: linear-gradient(135deg, #fffaf1, #ffe4b3); }
.big-code { margin: 6px 0 22px; }
.copy-btn.large { min-width: min(100%, 360px); }
.footer { padding: 34px 20px 50px; text-align: center; color: var(--muted); font-weight: 700; }

@media (max-width: 820px) {
  .hero { min-height: auto; }
  .hero-inner { padding-top: 70px; }
  .two-col, .steps { grid-template-columns: 1fr; }
  .section { padding: 64px 18px; }
  .nav { padding-inline: 16px; }
  .nav-link { display: none; }
}