:root {
  --bg: #fbfefd;
  --surface: #ffffff;
  --surface-muted: #f1f8f7;
  --text: #17211f;
  --muted: #63716f;
  --border: #d9e7e4;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
  --accent-soft: #e8f7f4;
  --blue: #2563eb;
  --amber: #b45309;
  --amber-soft: #fff7ed;
  --shadow: 0 18px 42px rgba(15, 118, 110, 0.09);
  --max: 1180px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 10;
  padding: 10px 14px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(251, 254, 253, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(var(--max), calc(100% - 32px));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.brand-name {
  font-size: 18px;
  font-weight: 600;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.site-nav a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--accent);
  background: var(--accent-soft);
  outline: none;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(34px, 4.2vw, 56px);
  line-height: 1.12;
  font-weight: 500;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.2;
  font-weight: 500;
}

h3 {
  margin-bottom: 8px;
  font-size: 19px;
  line-height: 1.35;
  font-weight: 600;
}

h4 {
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--accent);
}

.eyebrow,
.panel-kicker,
.result-kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

.lead {
  color: var(--muted);
  font-size: 18px;
  max-width: 660px;
}

.decision-surface {
  scroll-margin-top: 96px;
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 46px;
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(520px, 1.14fr);
  gap: 28px;
  align-items: start;
}

.decision-surface > * {
  min-width: 0;
}

.decision-copy {
  padding: 12px 0;
}

.trust-strip {
  margin-top: 28px;
  display: grid;
  gap: 10px;
  max-width: 520px;
}

.trust-strip span {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
}

.trust-strip strong {
  color: var(--text);
  font-weight: 600;
}

.tool-panel,
.result-panel,
.search-panel,
.guide-card,
.category-card,
.situation-card,
.detail-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.tool-panel {
  padding: 22px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}

.tool-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.tool-head h2 {
  margin-bottom: 0;
  font-size: 24px;
}

.status-pill {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--accent);
  background: var(--accent-soft);
  font-size: 13px;
  font-weight: 600;
}

.selector-group,
.quick-search,
.topic-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.selector-group {
  padding: 18px 0;
}

.select-chip,
.filter-chip,
.quick-search button,
.search-clear,
.text-button {
  min-height: 38px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font-size: 14px;
}

.select-chip:hover,
.select-chip:focus-visible,
.filter-chip:hover,
.filter-chip:focus-visible,
.quick-search button:hover,
.quick-search button:focus-visible,
.text-button:hover,
.text-button:focus-visible,
.search-clear:hover,
.search-clear:focus-visible {
  outline: none;
  border-color: var(--accent);
  color: var(--accent);
}

.select-chip.is-active,
.filter-chip.is-active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.result-panel {
  padding: 18px;
  background: linear-gradient(180deg, #fff, var(--surface-muted));
}

.result-main p {
  color: var(--muted);
}

.result-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.result-columns > div {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.result-columns ul,
.source-list {
  margin: 0;
  padding-left: 20px;
}

.result-columns li,
.source-list li {
  margin: 7px 0;
}

.result-footer,
.detail-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
}

.button-link.secondary {
  background: #fff;
  color: var(--accent);
}

.text-link {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.section-band {
  padding: 58px 0;
}

.section-band.muted {
  background: var(--surface-muted);
}

.section-inner {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 22px;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
}

.search-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.74fr) minmax(520px, 1.26fr);
  gap: 28px;
  align-items: start;
}

.search-panel {
  padding: 20px;
  box-shadow: var(--shadow);
}

.search-label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.search-input-row {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.search-input {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
}

.search-input:focus {
  outline: 3px solid var(--accent-soft);
  border-color: var(--accent);
}

.search-count,
.topic-count,
.copy-status {
  color: var(--muted);
  font-size: 14px;
}

.search-results {
  display: grid;
  gap: 10px;
}

.search-result-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px 0;
  border-top: 1px solid var(--border);
}

.search-result-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.guide-grid,
.category-grid,
.situation-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.guide-card,
.category-card,
.situation-card {
  padding: 18px;
  min-width: 0;
}

.guide-card p,
.category-card p,
.situation-card p {
  color: var(--muted);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}

.tag-link:hover,
.tag-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.topic-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.source-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.source-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.source-table th,
.source-table td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.source-table th {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  background: #f8fbfb;
}

.detail-hero {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 58px 0 28px;
}

.detail-grid {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto 58px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: 16px;
  align-items: start;
}

.detail-grid.single {
  grid-template-columns: 1fr;
  max-width: 920px;
}

.detail-panel {
  padding: 20px;
}

.detail-panel + .detail-panel {
  margin-top: 16px;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: #fff;
}

.footer-inner {
  width: min(var(--max), calc(100% - 32px));
  min-height: 96px;
  margin: 0 auto;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
}

.footer-inner p {
  margin-bottom: 0;
}

.footer-inner nav {
  display: flex;
  gap: 14px;
}

@media (max-width: 920px) {
  .header-inner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 12px 0;
  }

  .decision-surface,
  .search-layout,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .decision-surface {
    padding-top: 34px;
  }

  .result-columns,
  .guide-grid,
  .category-grid,
  .situation-grid {
    grid-template-columns: 1fr;
  }

  .topic-toolbar,
  .search-input-row {
    align-items: stretch;
    flex-direction: column;
  }

  .search-result-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .tool-panel,
  .search-panel,
  .detail-panel,
  .guide-card,
  .category-card,
  .situation-card {
    padding: 16px;
  }

  .section-band {
    padding: 42px 0;
  }
}