/* ---- design tokens ---- */
:root {
  --bg: #f7f4ee;
  --surface: #ffffff;
  --surface-alt: #fbf9f4;
  --border: #e6dfd2;
  --border-strong: #d4c9b3;
  --text: #1f2a37;
  --text-muted: #5b6675;
  --text-soft: #7a8493;
  --primary: #2d6a5c;
  --primary-dark: #224f44;
  --primary-soft: #e6efe9;
  --accent: #b86b2a;
  --accent-dark: #93521d;
  --accent-soft: #f6e9da;
  --warn: #8a5a2a;
  --shadow-sm: 0 1px 2px rgba(31, 42, 55, 0.04), 0 2px 6px rgba(31, 42, 55, 0.04);
  --shadow-md: 0 2px 6px rgba(31, 42, 55, 0.05), 0 12px 28px rgba(31, 42, 55, 0.06);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --maxw: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt" 1;
}

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

a { color: var(--primary-dark); text-underline-offset: 2px; }
a:hover { color: var(--primary); }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

.hidden { display: none !important; }
.muted { color: var(--text-muted); font-size: 13px; line-height: 1.7; margin: 8px 0 0; }

/* ---- header ---- */
.site-header {
  background: rgba(247, 244, 238, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 30;
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
  letter-spacing: 0.02em;
}
.brand__mark {
  width: 22px;
  height: 22px;
  background-image: url("/favicon.svg");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}
.site-nav {
  display: flex;
  gap: 14px;
  font-size: 13px;
}
.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
}
.site-nav a:hover { color: var(--text); }

/* ---- hero ---- */
.hero {
  padding: 36px 0 24px;
  background:
    radial-gradient(1200px 320px at 80% -40%, rgba(45, 106, 92, 0.10), transparent 70%),
    radial-gradient(900px 260px at 0% -20%, rgba(184, 107, 42, 0.08), transparent 70%);
}
.hero__eyebrow {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--primary-dark);
  margin: 0 0 8px;
  font-weight: 600;
}
.hero__title {
  font-size: clamp(24px, 5.4vw, 32px);
  line-height: 1.35;
  margin: 0 0 12px;
  letter-spacing: 0.01em;
}
.hero__lead {
  font-size: 15px;
  color: var(--text);
  margin: 0 0 16px;
  max-width: 60ch;
}
.hero__notes {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.hero__notes li {
  font-size: 12px;
  color: var(--primary-dark);
  background: var(--primary-soft);
  border: 1px solid #cfe1d6;
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 600;
}
.hero__cta {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 999px;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: background .15s ease, transform .15s ease;
}
.hero__cta:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); }

/* ---- card / section ---- */
.diagnose, .about { padding: 28px 0 48px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.section-title {
  font-size: 18px;
  margin: 0 0 6px;
  letter-spacing: 0.01em;
}
.section-sub {
  margin: 0 0 18px;
  color: var(--text-muted);
  font-size: 13px;
}

/* ---- form ---- */
.form-row { margin-bottom: 16px; }
.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.form-label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--text);
}
.form-hint {
  margin: 6px 0 0;
  color: var(--text-soft);
  font-size: 12px;
}
.form input[type="number"],
.form select {
  width: 100%;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 12px 12px;
  font-size: 16px;
  color: var(--text);
  font-family: inherit;
  transition: border-color .15s ease, box-shadow .15s ease;
  appearance: none;
  -webkit-appearance: none;
}
.form select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%235b6675' d='M6 8 0 0h12z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.form input:focus,
.form select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(45, 106, 92, 0.15);
}

.radio-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.radio-pill {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: 12px 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: border-color .15s ease, background .15s ease, color .15s ease;
}
.radio-pill input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
}
.radio-pill:hover { border-color: var(--primary); }
.radio-pill:has(input:checked) {
  background: var(--primary-soft);
  border-color: var(--primary);
  color: var(--primary-dark);
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 700;
  font-size: 15px;
  border-radius: 999px;
  padding: 13px 18px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s ease, transform .15s ease, border-color .15s ease;
}
.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border-strong);
}
.btn--ghost:hover { color: var(--text); border-color: var(--text-muted); }
.btn--cta {
  background: var(--accent);
  color: #fff;
  font-size: 16px;
  padding: 15px 22px;
  box-shadow: 0 6px 16px rgba(184, 107, 42, 0.25);
}
.btn--cta:hover { background: var(--accent-dark); color: #fff; transform: translateY(-1px); }

.form-disclaimer {
  margin: 14px 0 0;
  font-size: 12px;
  color: var(--text-soft);
  line-height: 1.7;
}

/* ---- result ---- */
.result-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 20px;
}
.result-item {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
}
.result-item__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.result-item__head h3 {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.result-item__value {
  margin: 4px 0 4px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.01em;
  line-height: 1.35;
}
.result-item__sub {
  margin: 0;
  font-size: 12px;
  color: var(--text-soft);
}
.badge {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge--strong { background: var(--primary-soft); color: var(--primary-dark); border: 1px solid #cfe1d6; }
.badge--mid    { background: #f1ecdf; color: #6f5a2a; border: 1px solid #e3d9be; }
.badge--ref    { background: #efeae2; color: var(--text-muted); border: 1px solid var(--border-strong); }

.meter {
  margin-top: 10px;
  width: 100%;
  height: 8px;
  background: #ece7dc;
  border-radius: 999px;
  overflow: hidden;
}
.meter__bar {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #b86b2a 0%, #d2a259 50%, #2d6a5c 100%);
  width: 0%;
  transition: width .4s ease;
  border-radius: 999px;
}

.risk-list {
  margin: 8px 0 0;
  padding-left: 18px;
  font-size: 13px;
  color: var(--text);
}
.risk-list li { margin: 4px 0; }

/* ---- tabs ---- */
.tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  margin-bottom: 14px;
}
.tab {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 0;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 9px 6px;
  border-radius: 999px;
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.tab:hover { color: var(--text); }
.tab.is-active {
  background: var(--surface);
  color: var(--primary-dark);
  box-shadow: var(--shadow-sm);
}

.tab-panel {
  display: none;
  padding: 4px 2px 0;
}
.tab-panel.is-active { display: block; }
.tab-panel h3 { font-size: 15px; margin: 4px 0 8px; }
.reason-list {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
}
.reason-list li { margin: 4px 0; }

/* ---- cta block ---- */
.cta-block {
  margin-top: 22px;
  padding: 18px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  text-align: center;
}
.cta-block__lead {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--text);
}
.cta-block__note {
  margin: 12px 0 0;
  font-size: 11px;
  color: var(--text-soft);
}

/* ---- areas (TOP内：地域別ページへの内部リンク) ---- */
.areas { padding: 0 0 12px; }
.areas-card { padding-top: 22px; }
.areas-heading {
  font-size: 13px;
  margin: 18px 0 10px;
  color: var(--text);
  letter-spacing: 0.02em;
}
.areas-heading:first-of-type { margin-top: 8px; }
.area-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.area-links a {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.area-links a:hover {
  background: var(--primary-soft);
  border-color: var(--primary);
  color: var(--primary-dark);
}

/* ---- about ---- */
.about-card p { margin: 0 0 12px; font-size: 14px; }
.data-source-list {
  margin: 8px 0 0;
  padding-left: 18px;
  font-size: 13px;
  color: var(--text-muted);
}
.data-source-list li { margin: 4px 0; }

/* ---- footer ---- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface-alt);
  padding: 22px 0;
  margin-top: 12px;
}
.site-footer__note {
  margin: 0 0 10px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.7;
}
.site-footer__nav {
  margin: 0 0 10px;
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 4px;
}
.site-footer__nav a {
  color: var(--text-muted);
  text-decoration: none;
}
.site-footer__nav a:hover { color: var(--text); text-decoration: underline; }
.site-footer__sep {
  color: var(--text-soft);
  font-size: 11px;
}
.site-footer__copy {
  margin: 0;
  font-size: 11px;
  color: var(--text-soft);
}

/* ---- subpage (privacy / sitemap) ---- */
.subpage {
  padding: 28px 0 36px;
}
.subpage h1 {
  font-size: clamp(22px, 4.6vw, 26px);
  margin: 0 0 6px;
}
.subpage .subpage__lead {
  margin: 0 0 18px;
  color: var(--text-muted);
  font-size: 13px;
}
.subpage h2 {
  font-size: 16px;
  margin: 22px 0 8px;
}
.subpage p, .subpage li {
  font-size: 14px;
  line-height: 1.85;
}
.subpage ul, .subpage ol {
  padding-left: 20px;
  margin: 8px 0 0;
}
.sitemap-section {
  margin-top: 18px;
}
.sitemap-section h3 {
  font-size: 13px;
  margin: 14px 0 8px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ---- area page ---- */
.breadcrumb {
  margin: 0 0 14px;
  font-size: 12px;
  color: var(--text-muted);
}
.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
}
.breadcrumb li + li::before {
  content: "›";
  margin-right: 6px;
  color: var(--text-soft);
}
.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}
.breadcrumb a:hover { color: var(--text); text-decoration: underline; }
.breadcrumb [aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

.area-page .card { margin-bottom: 14px; }
.area-page .eyebrow {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--primary-dark);
  margin: 0 0 4px;
  font-weight: 600;
}
.area-page h1 {
  margin: 4px 0 10px;
}
.area-page h2 {
  font-size: 16px;
  margin: 0 0 10px;
}
.area-page .area-cta { text-align: center; }
.area-page .area-cta .btn--cta { width: 100%; max-width: 360px; }

.stats-card .stats-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0 0 10px;
}
.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 4px 0 12px;
}
@media (min-width: 540px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
}
.stats-cell {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}
.stats-label {
  margin: 0 0 4px;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.stats-figure {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
  line-height: 1.35;
}
.stats-card .stats-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 4px;
}
.stats-card .stats-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 8px;
}
.api-credit {
  margin: 12px 0 0;
  font-size: 11px;
  line-height: 1.7;
  color: var(--text-soft);
  border-top: 1px dashed var(--border);
  padding-top: 10px;
}
.data-placeholder p { margin: 0 0 6px; }

/* ---- transactions table ---- */
.tx-table-wrap {
  margin: 8px -22px 0;
  padding: 0 22px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.tx-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 720px;
}
.tx-table thead th {
  text-align: left;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-strong);
  white-space: nowrap;
  background: var(--surface-alt);
  position: sticky;
  top: 0;
}
.tx-table th.num { text-align: right; }
.tx-table th[data-sortable] {
  cursor: pointer;
  user-select: none;
  padding-right: 22px;
  position: sticky;
  top: 0;
}
.tx-table th[data-sortable]::after {
  content: "⇅";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
  opacity: 0.4;
}
.tx-table th[data-sortable]:hover::after,
.tx-table th[data-sortable]:focus-visible::after { opacity: 0.85; }
.tx-table th.sort-asc::after {
  content: "▲";
  color: var(--primary);
  opacity: 1;
}
.tx-table th.sort-desc::after {
  content: "▼";
  color: var(--primary);
  opacity: 1;
}
.tx-table th[data-sortable]:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}
.tx-table tbody td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  white-space: nowrap;
}
.tx-table tbody tr:hover { background: var(--surface-alt); }
.tx-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.tx-download {
  margin: 14px 0 0;
  font-size: 13px;
}
.tx-download a {
  color: var(--primary-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.tx-card .api-credit { margin-top: 14px; }

/* ---- responsive ---- */
@media (min-width: 640px) {
  .hero { padding: 56px 0 32px; }
  .form-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 14px;
  }
  .form-grid .form-row { margin-bottom: 0; }
  .form-actions {
    flex-direction: row;
    justify-content: flex-start;
  }
  .result-grid {
    grid-template-columns: 1fr 1fr;
  }
  .result-item--full { grid-column: 1 / -1; }
  .tabs { max-width: 480px; }
}

@media (max-width: 380px) {
  .radio-group { grid-template-columns: 1fr 1fr 1fr; }
  .radio-pill { padding: 10px 4px; font-size: 13px; }
  .tab { font-size: 12px; padding: 8px 4px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}