:root {
  --blue: #0755d8;
  --deep-blue: #062d86;
  --pink: #f52979;
  --yellow: #ffd21f;
  --ink: #161616;
  --paper: #fffdf5;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--deep-blue);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 56px;
  padding: 8px 14px;
  color: #fff;
  background: rgba(4, 25, 86, .96);
  border-bottom: 3px solid var(--yellow);
}
.fiction-badge {
  margin: 0;
  padding: 5px 8px;
  color: #210b00;
  background: var(--yellow);
  border-radius: 6px;
  font-size: 11px;
  font-weight: 900;
  line-height: 1.15;
}
.brand { color: #fff; text-decoration: none; font-size: 12px; font-weight: 900; }
.header-cta {
  margin-left: auto;
  padding: 8px 10px;
  color: #fff;
  background: var(--pink);
  border: 2px solid #fff;
  border-radius: 999px;
  font-weight: 900;
  cursor: pointer;
}

main { overflow: hidden; }
.section-image, .cta-section { max-width: 560px; margin: 0 auto; background: var(--paper); }
.section-image img, .cta-section > img { display: block; width: 100%; height: auto; }
.hero { padding-bottom: 18px; background: #0b62dd; }
.hero-actions { padding: 0 18px; text-align: center; }
.primary-button, .secondary-button {
  appearance: none;
  display: inline-block;
  border: 0;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  transition: transform .18s ease, filter .18s ease;
}
.primary-button {
  width: 100%;
  padding: 15px 18px;
  color: #fff;
  background: linear-gradient(#ff4d9a, #d8005f);
  border: 4px solid #fff;
  border-radius: 14px;
  box-shadow: 0 5px 0 #7d073f, 0 8px 15px rgba(0,0,0,.25);
  font-size: 17px;
}
.primary-button.large { font-size: 20px; }
.primary-button:hover, .secondary-button:hover, .header-cta:hover { filter: brightness(1.08); transform: translateY(-2px); }
.primary-button:active, .secondary-button:active, .header-cta:active { transform: translateY(2px); }
.microcopy { margin: 9px 0 0; color: #fff; font-size: 11px; font-weight: 800; }

.cta-section { padding-bottom: 24px; }
.cta-content { padding: 18px; text-align: center; background: var(--yellow); }
.cta-content h2 { margin: 0 0 14px; font-size: clamp(22px, 6vw, 34px); font-weight: 1000; }
.cta-content .microcopy { color: var(--ink); }
.notice {
  max-width: 560px;
  margin: 0 auto;
  padding: 30px 20px;
  color: #fff;
  background: #d92020;
  text-align: center;
  border-top: 5px solid var(--yellow);
}
.notice h2 { margin: 0 0 12px; font-size: 24px; }
.notice p { margin: 6px 0; font-weight: 800; }
.site-footer { padding: 24px 16px 40px; color: #fff; background: #061b58; text-align: center; font-size: 12px; font-weight: 800; }
.site-footer p { margin: 5px 0; }

.fiction-dialog { width: min(90vw, 400px); padding: 0; border: 0; border-radius: 18px; background: transparent; }
.fiction-dialog::backdrop { background: rgba(0, 12, 52, .72); }
.dialog-card { padding: 26px 20px 20px; border: 5px solid var(--ink); border-radius: 18px; background: var(--paper); box-shadow: 0 8px 0 var(--yellow); text-align: center; }
.dialog-kicker { margin: 0 0 6px; color: var(--pink); font-weight: 1000; letter-spacing: .08em; }
.dialog-card h2 { margin: 0 0 12px; font-size: 24px; }
.dialog-card p:not(.dialog-kicker) { line-height: 1.7; font-weight: 700; }
.secondary-button { margin-top: 8px; padding: 11px 24px; color: #fff; background: var(--blue); border: 3px solid var(--ink); border-radius: 999px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (min-width: 700px) {
  body { background: radial-gradient(circle at top, #1b76ff, #04144f 70%); }
  .site-header { padding-inline: max(18px, calc((100vw - 560px) / 2)); }
  .section-image, .cta-section, .notice { box-shadow: 0 0 28px rgba(0,0,0,.3); }
}