:root {
  color-scheme: light;
  --ink: #171326;
  --muted: #5a5565;
  --lime: #d8f400;
  --lime-soft: #eefc73;
  --purple: #8300ff;
  --orange: #ff861d;
  --paper: #fffdf6;
  --line: rgba(23, 19, 38, 0.14);
  --shadow: 0 28px 80px rgba(30, 19, 72, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 16px clamp(18px, 5vw, 72px);
  background: rgba(255, 253, 246, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 28px;
  font-weight: 850;
  letter-spacing: 0;
}

.brand.compact {
  font-size: 22px;
}

.brand-mark {
  width: 34px;
  aspect-ratio: 1;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background:
    linear-gradient(90deg, transparent 48%, var(--ink) 48% 56%, transparent 56%),
    linear-gradient(180deg, #ffe600 0 50%, #ff8a00 50% 100%);
  position: relative;
  overflow: hidden;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 13px 0 0 13px;
  background: var(--orange);
  border-top-left-radius: 999px;
}

.nav-actions {
  display: flex;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}

.nav-actions a {
  border-radius: 999px;
  padding: 9px 13px;
}

.nav-actions a:hover {
  background: rgba(131, 0, 255, 0.1);
  color: var(--purple);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 540px);
  gap: clamp(28px, 6vw, 78px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: clamp(30px, 6vw, 78px) clamp(18px, 5vw, 72px) 56px;
  background:
    linear-gradient(105deg, rgba(216, 244, 0, 0.95) 0 58%, rgba(255, 253, 246, 0) 58%),
    radial-gradient(circle at 85% 18%, rgba(255, 134, 29, 0.2), transparent 32%),
    var(--paper);
}

.hero-copy {
  max-width: 680px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--purple);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6.8vw, 82px);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-text {
  max-width: 610px;
  margin-bottom: 30px;
  color: #2c2736;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 650;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  padding: 12px 20px;
  font-weight: 850;
  box-shadow: 0 6px 0 var(--ink);
  transition:
    transform 160ms ease,
    box-shadow 160ms ease;
}

.button:hover {
  transform: translateY(3px);
  box-shadow: 0 3px 0 var(--ink);
}

.button.primary {
  background: var(--purple);
  color: white;
}

.button.secondary {
  background: white;
}

.notice-frame {
  width: min(100%, 500px);
  margin: 0 auto;
  border: 1px solid rgba(23, 19, 38, 0.12);
  border-radius: 8px;
  background: white;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.notice-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.info-band {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.7fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  padding: clamp(42px, 7vw, 88px) clamp(18px, 5vw, 72px);
  background: var(--ink);
  color: white;
}

.info-band .eyebrow {
  color: var(--lime-soft);
}

.info-band h2 {
  max-width: 760px;
  margin-bottom: 0;
  font-size: clamp(32px, 4vw, 58px);
  line-height: 1.02;
  letter-spacing: 0;
}

.info-band p:last-child {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 620;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px clamp(18px, 5vw, 72px);
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    background:
      linear-gradient(180deg, rgba(216, 244, 0, 0.96) 0 60%, rgba(255, 253, 246, 0) 60%),
      var(--paper);
  }

  .notice-frame {
    width: min(100%, 430px);
  }

  .info-band {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    min-height: auto;
    gap: 10px;
  }

  .brand {
    font-size: 24px;
  }

  .brand-mark {
    width: 30px;
  }

  .hero {
    min-height: auto;
    padding-top: 32px;
  }

  h1 {
    font-size: 40px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .footer {
    align-items: flex-start;
    flex-direction: column;
  }
}