:root {
  --bg: #f4efe6;
  --surface: rgba(255, 248, 238, 0.92);
  --surface-strong: #fff7ec;
  --text: #1d160f;
  --muted: #645648;
  --accent: #b8532a;
  --accent-strong: #872d16;
  --border: rgba(29, 22, 15, 0.1);
  --shadow: 0 24px 60px rgba(68, 39, 17, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(239, 160, 83, 0.22), transparent 28%),
    radial-gradient(circle at bottom right, rgba(72, 110, 102, 0.18), transparent 24%),
    var(--bg);
  color: var(--text);
  font-family: "Space Grotesk", "Hiragino Sans", sans-serif;
}

img {
  display: block;
  max-width: 100%;
}

.page-shell {
  min-height: 100vh;
}

.hero {
  position: relative;
  min-height: 100vh;
  overflow: clip;
}

.hero-backdrop,
.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.03);
}

.hero-overlay {
  background:
    linear-gradient(180deg, rgba(16, 12, 8, 0.2) 0%, rgba(16, 12, 8, 0.6) 55%, rgba(16, 12, 8, 0.86) 100%),
    linear-gradient(135deg, rgba(184, 83, 42, 0.24), transparent 45%);
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: center;
  gap: 1.25rem;
  min-height: 100vh;
  padding: 6rem min(7vw, 5rem);
  max-width: 980px;
}

.eyebrow,
.section-label,
.hero-badge,
.archive-card__category {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-weight: 700;
}

.eyebrow,
.section-label {
  color: #f7d6b2;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  color: #f9e8cf;
}

.hero-badge {
  padding: 0.5rem 0.8rem;
  border: 1px solid rgba(255, 236, 215, 0.35);
  border-radius: 999px;
  background: rgba(255, 241, 222, 0.12);
}

#hero-date {
  font-size: 0.95rem;
}

#hero-question,
#answer-title {
  margin: 0;
  font-family: "Noto Serif JP", serif;
  line-height: 1.18;
}

#hero-question {
  max-width: 14ch;
  color: #fff7f0;
  font-size: clamp(2.7rem, 6vw, 5.8rem);
}

.hero-lead {
  max-width: 42rem;
  margin: 0;
  color: #ffe8d7;
  font-size: clamp(1rem, 2vw, 1.28rem);
  line-height: 1.8;
}

.reveal-button {
  width: fit-content;
  margin-top: 1rem;
  padding: 0.95rem 1.25rem;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, #f7c98d, #ef9a58);
  color: #351d10;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.22);
}

.reveal-button span {
  display: inline-block;
  margin-left: 0.65rem;
  animation: bounce 1.5s infinite;
}

.hero-credit {
  position: absolute;
  right: 1.25rem;
  bottom: 1rem;
  z-index: 1;
  color: rgba(255, 244, 229, 0.82);
  font-size: 0.8rem;
}

.hero-credit a {
  color: inherit;
}

.answer-section,
.archive-section {
  padding: 5rem min(7vw, 5rem);
}

.section-head {
  margin-bottom: 2rem;
}

.section-head h2 {
  margin: 0.5rem 0 0;
  font-size: clamp(2rem, 4vw, 3.6rem);
}

.answer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.8fr);
  gap: 1.5rem;
}

.answer-card,
.fact-card,
.archive-card {
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.answer-card,
.fact-card {
  padding: 1.5rem;
}

.answer-summary {
  margin: 0 0 1rem;
  font-family: "Noto Serif JP", serif;
  font-size: 1.4rem;
  line-height: 1.75;
}

.answer-body p {
  margin: 0 0 1rem;
  color: var(--muted);
  line-height: 1.95;
}

.fact-card h3 {
  margin-top: 0;
  font-size: 1rem;
}

.fact-card ul {
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.7;
}

.tag-list,
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.tag-chip,
.filter-chip {
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  color: var(--muted);
  font: inherit;
}

.filter-chip {
  cursor: pointer;
}

.filter-chip.is-active {
  border-color: transparent;
  background: var(--accent);
  color: #fff2ea;
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.archive-card {
  overflow: hidden;
}

.archive-card__image-wrap {
  aspect-ratio: 1.2;
  overflow: hidden;
}

.archive-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.archive-card__body {
  padding: 1.15rem;
}

.archive-card__category {
  color: var(--accent);
  margin: 0 0 0.6rem;
}

.archive-card__title {
  margin: 0;
  font-family: "Noto Serif JP", serif;
  line-height: 1.5;
  font-size: 1.15rem;
}

.archive-card__answer {
  margin: 0.7rem 0 0;
  color: var(--muted);
  line-height: 1.8;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}

@media (max-width: 960px) {
  .answer-grid,
  .archive-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-content,
  .answer-section,
  .archive-section {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .hero-credit {
    position: static;
    padding: 0 1.25rem 1.25rem;
  }

  #hero-question {
    max-width: unset;
  }
}