:root {
  --bg: #f4f0e8;
  --surface: rgba(255, 255, 255, 0.88);
  --line: rgba(44, 46, 51, 0.12);
  --text: #1f2933;
  --muted: #5f6c78;
  --accent: #b34b2a;
  --accent-strong: #8e3518;
  --accent-soft: rgba(179, 75, 42, 0.1);
  --success: #24543d;
  --shadow: 0 24px 60px rgba(43, 35, 30, 0.12);
  --radius-xl: 28px;
  --radius-md: 12px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { font-size: 16px; }

body {
  margin: 0;
  color: var(--text);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  line-height: 1.7;
  background:
    radial-gradient(circle at top left, rgba(179, 75, 42, 0.12), transparent 30%),
    radial-gradient(circle at right 20%, rgba(38, 84, 61, 0.12), transparent 24%),
    linear-gradient(180deg, #fbf7f2 0%, var(--bg) 100%);
}

a { color: inherit; }
img { max-width: 100%; display: block; }
.site-shell { min-height: 100vh; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(251, 247, 242, 0.84);
  border-bottom: 1px solid var(--line);
}

.site-header__inner,
.hero,
.content-grid,
.section-stack,
.site-footer__inner,
.page-block {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand { text-decoration: none; }
.brand__eyebrow {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
}
.brand__name {
  display: block;
  font-size: 1.3rem;
  font-weight: 800;
}

.nav { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.nav a,
.button,
button {
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  color: var(--text);
  text-decoration: none;
  padding: 0.72rem 1rem;
  transition: 0.2s ease;
}

.button--primary,
button {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: white;
  border-color: transparent;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.5rem;
  padding: 3rem 0 2rem;
}

.hero__panel,
.card,
.search-result,
.form-card,
.notice,
.detail-panel {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow);
  border-radius: var(--radius-xl);
}

.hero__panel,
.card,
.notice,
.detail-panel,
.form-card,
.search-result {
  padding: 1.4rem;
}

.hero__kicker,
.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
}

.hero h1,
.page-title {
  margin: 1rem 0 0.75rem;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.lead,
.muted { color: var(--muted); }

.hero-search,
.stack,
.detail-meta,
.search-list,
.section-stack {
  display: grid;
  gap: 1rem;
}

.hero-search__grid,
.form-grid,
.content-grid,
.reason-grid {
  display: grid;
  gap: 1rem;
}

.hero-search__grid,
.form-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.content-grid { grid-template-columns: 0.95fr 1.05fr; }
.reason-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.tab-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.tab-row__item {
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
  color: var(--muted);
}

.tab-row__item--active {
  color: var(--accent-strong);
  background: var(--accent-soft);
  border-color: rgba(179, 75, 42, 0.25);
}

.section-heading {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.15;
}

label {
  display: grid;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.92rem;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(31, 41, 51, 0.12);
  border-radius: 14px;
  padding: 0.9rem 1rem;
  font: inherit;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
}

textarea { min-height: 140px; resize: vertical; }

.search-result { text-decoration: none; }
.search-result__top,
.detail-meta__item {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: start;
}

.price {
  color: var(--accent-strong);
  font-size: 1.35rem;
  font-weight: 800;
}

.errors,
.success-box {
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
}

.errors {
  border: 1px solid rgba(179, 75, 42, 0.28);
  background: rgba(179, 75, 42, 0.08);
  color: var(--accent-strong);
}

.success-box {
  border: 1px solid rgba(36, 84, 61, 0.25);
  background: rgba(36, 84, 61, 0.08);
  color: var(--success);
}

.page-block { padding: 2rem 0 3rem; }
.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.4);
}
.site-footer__inner {
  padding: 1.4rem 0 2rem;
  color: var(--muted);
  font-size: 0.92rem;
}

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

@media (max-width: 720px) {
  .hero-search__grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

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