:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1f2933;
  --muted: #62707c;
  --line: #d9e2ec;
  --accent: #0b6e4f;
  --accent-soft: #e3f5ee;
  --danger: #9b1c1c;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
  --font: "Hiragino Sans", "Noto Sans JP", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(circle at top left, #e8f4ef 0, transparent 28%),
    linear-gradient(180deg, #eef2f6 0%, var(--bg) 40%);
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(1080px, calc(100% - 2rem)); margin: 0 auto; }
.site-header {
  background: rgba(255,255,255,0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
}
.logo { font-weight: 700; color: var(--text); font-size: 1.05rem; }
.nav a { margin-left: 1rem; color: var(--text); }
.hero {
  padding: 2rem 0 1rem;
}
.hero h1 { margin: 0 0 0.5rem; font-size: clamp(1.6rem, 3vw, 2.2rem); }
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.7rem 1.1rem;
  border-radius: 8px;
  font-weight: 600;
}
.btn:hover { text-decoration: none; opacity: 0.92; }
.maker-grid {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}
.maker-grid a {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
  color: var(--text);
  box-shadow: var(--shadow);
}
.device-table-wrap { overflow-x: auto; }
.price-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.price-table th, .price-table td {
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.price-table th { background: #f0f4f8; font-size: 0.9rem; }
.breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 1rem 0 0;
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 0.4rem;
  color: #9aa5b1;
}
.stats { margin: 1rem 0 1.5rem; }
.section-title { margin: 1.5rem 0 0.75rem; font-size: 1.15rem; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.9rem;
  box-shadow: var(--shadow);
}
.stat-label { color: var(--muted); font-size: 0.85rem; }
.stat-value { font-size: 1.2rem; font-weight: 700; margin-top: 0.25rem; }
.stat-value.primary { color: var(--accent); font-size: 1.45rem; }
.ad-slot { margin: 1.25rem 0; }
.ad-placeholder {
  border: 1px dashed var(--line);
  background: #f8fafc;
  color: var(--muted);
  text-align: center;
  padding: 1.5rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
}
.variant-list, .related-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}
.variant-list li, .related-list li {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}
.listings-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: end;
}
.listing-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.9rem;
}
.listing-cards {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.75rem;
}
.listing-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.listing-link {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1rem;
  padding: 0.9rem;
  color: inherit;
}
.listing-link:hover { text-decoration: none; }
.listing-image {
  width: 120px;
  height: 120px;
  background: var(--accent-soft);
  border-radius: 8px;
  overflow: hidden;
  display: grid;
  place-items: center;
}
.listing-image img { width: 100%; height: 100%; object-fit: contain; }
.listing-price {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
}
.listing-title {
  margin: 0.35rem 0;
  font-size: 0.98rem;
  font-weight: 600;
}
.listing-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.35rem 0.75rem;
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}
.listing-meta div { display: flex; gap: 0.35rem; }
.listing-meta dt { font-weight: 600; color: #486581; }
.listing-meta dd { margin: 0; }
.badge.junk {
  display: inline-block;
  margin-top: 0.4rem;
  background: #fde8e8;
  color: var(--danger);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  font-size: 0.75rem;
}
.chart-section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
}
#price-chart { width: 100%; max-width: 100%; height: auto; }
.site-footer {
  margin-top: 3rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}
.credit { margin-bottom: 0.5rem; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}
.search-hint { color: var(--muted); }

@media (max-width: 800px) {
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .listing-link { grid-template-columns: 88px 1fr; }
  .listing-image { width: 88px; height: 88px; }
  .listing-meta { grid-template-columns: 1fr; }
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 0 0 1rem;
}
.footer-links a { color: var(--muted); }
.yahoo-credit { margin: 0.75rem 0; }
.yahoo-credit a { color: inherit; }
.static-page {
  padding: 0.5rem 0 2rem;
  max-width: 760px;
}
.static-page h1 {
  margin: 0.5rem 0 1rem;
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
}
.static-page h2 {
  margin: 1.75rem 0 0.75rem;
  font-size: 1.1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}
.legal-page ul {
  padding-left: 1.25rem;
}
.legal-page li { margin: 0.35rem 0; }
.notice {
  background: var(--accent-soft);
  border: 1px solid #c6e4d8;
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  color: #244c3b;
}
.contact-form {
  margin-top: 1.25rem;
  display: grid;
  gap: 1rem;
}
.form-field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.7rem 0.8rem;
  font: inherit;
  background: var(--surface);
}
.form-field textarea { resize: vertical; min-height: 160px; }
.required {
  display: inline-block;
  margin-left: 0.35rem;
  background: #fde8e8;
  color: var(--danger);
  border-radius: 999px;
  padding: 0.1rem 0.45rem;
  font-size: 0.75rem;
  font-weight: 600;
}
.field-count {
  margin: 0.35rem 0 0;
  text-align: right;
  color: var(--muted);
  font-size: 0.85rem;
}
.form-actions { margin-top: 0.25rem; }
.form-actions .btn {
  border: 0;
  cursor: pointer;
}
.form-actions .btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}
.form-message {
  margin: 0.75rem 0 0;
  padding: 0.75rem 0.9rem;
  border-radius: 8px;
}
.form-message--success {
  background: var(--accent-soft);
  color: #244c3b;
}
.form-message--error {
  background: #fde8e8;
  color: var(--danger);
}
.honeypot-field {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.info-list {
  margin: 1.25rem 0 0;
  padding: 0;
}
.info-list__row {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}
.info-list dt {
  margin: 0;
  font-weight: 700;
  color: #486581;
}
.info-list dd { margin: 0; }

@media (max-width: 800px) {
  .info-list__row { grid-template-columns: 1fr; gap: 0.25rem; }
  .footer-links { gap: 0.6rem 1rem; }
}