:root {
  color-scheme: light;
  --ink: #1d2c24;
  --ink-soft: #5b675f;
  --paper: #f2f3ed;
  --card: #fffef9;
  --line: #cfd4ca;
  --line-dark: #909b91;
  --green: #496b56;
  --green-dark: #304238;
  --green-pale: #dfe8df;
  --plum: #76556f;
  --orange: #c97845;
  --shadow: 0 12px 32px rgb(34 54 42 / 9%);
  font-family: "Yu Gothic UI", "Hiragino Sans", Meiryo, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}
html {
  background: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
}
body {
  margin: 0;
  min-width: 320px;
}
a {
  color: var(--green-dark);
  text-underline-offset: 0.2em;
}
button,
input,
select {
  color: inherit;
  font: inherit;
}
button,
select {
  cursor: pointer;
}
button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 3px solid #e6a171;
  outline-offset: 3px;
}

.site-header {
  align-items: center;
  background: rgb(255 254 249 / 96%);
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  min-height: 68px;
  padding: 0 4vw;
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand {
  align-items: center;
  display: inline-flex;
  font-size: 0.98rem;
  font-weight: 750;
  gap: 0.72rem;
  text-decoration: none;
}
.brand-mark {
  align-items: flex-end;
  border: 2px solid var(--green-dark);
  display: inline-flex;
  gap: 2px;
  height: 28px;
  padding: 4px;
  width: 32px;
}
.brand-mark i {
  background: #8eaa91;
  display: block;
  height: 8px;
  width: 6px;
}
.brand-mark i:nth-child(2) {
  background: #c28b65;
  height: 13px;
}
.brand-mark i:nth-child(3) {
  background: var(--plum);
  height: 18px;
}
.site-header nav {
  display: flex;
  gap: clamp(0.75rem, 2.2vw, 2rem);
}
.site-header nav a {
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 650;
  text-decoration: none;
}
.site-header nav a:hover {
  color: var(--green-dark);
}

main {
  margin: 0 auto;
  max-width: 1240px;
  padding: 0 4vw 6rem;
}
.hero-shell {
  align-items: center;
  display: grid;
  gap: clamp(2.4rem, 7vw, 7rem);
  grid-template-columns: minmax(260px, 0.82fr) minmax(390px, 1.18fr);
  min-height: 530px;
  padding: 4.2rem 0 3.5rem;
}
.period-label,
.section-kicker {
  color: var(--green);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin: 0 0 0.75rem;
}
h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}
h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.35rem);
  letter-spacing: -0.035em;
  line-height: 1.35;
  margin: 0;
}
h2 {
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  letter-spacing: -0.02em;
  line-height: 1.35;
  margin: 0;
}
h3 {
  font-size: 1.05rem;
  margin: 0;
}
.lead {
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.9;
  margin: 1.2rem 0 0;
  max-width: 34rem;
}
.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.8rem;
}
.hero-facts span {
  align-items: baseline;
  background: var(--card);
  border: 1px solid var(--line);
  display: inline-flex;
  font-size: 0.78rem;
  gap: 0.38rem;
  padding: 0.55rem 0.72rem;
}
.hero-facts b {
  color: var(--green-dark);
  font-size: 1rem;
}

.age-drawer {
  background: #dfe4dc;
  border: 1px solid #aeb9ae;
  box-shadow: var(--shadow);
  height: 370px;
  overflow: hidden;
  padding: 3.5rem 2.4rem 2rem;
  position: relative;
}
.age-drawer::before {
  border: 1px solid #a2aea3;
  bottom: 18px;
  content: "";
  left: 18px;
  position: absolute;
  right: 18px;
  top: 18px;
}
.drawer-label {
  align-items: flex-start;
  display: flex;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}
.drawer-label span {
  color: var(--ink-soft);
  font-size: 0.7rem;
}
.drawer-label strong {
  font-size: 0.82rem;
}
.age-bins {
  align-items: flex-end;
  background: var(--card);
  border: 2px solid var(--green-dark);
  display: flex;
  gap: 4px;
  height: 188px;
  margin-top: 1rem;
  padding: 1rem 0.85rem 1.8rem;
  position: relative;
  z-index: 1;
}
.age-bins i {
  align-items: flex-end;
  display: flex;
  flex: 1;
  justify-content: center;
  min-width: 12px;
  position: relative;
}
.age-bins i span {
  bottom: -1.15rem;
  color: var(--ink-soft);
  font-size: 0.54rem;
  font-style: normal;
  position: absolute;
}
.bin-19 {
  background: #bdcdb8;
  height: 8%;
}
.bin-24 {
  background: #9fb89e;
  height: 35%;
}
.bin-29 {
  background: #7fa587;
  height: 59%;
}
.bin-34 {
  background: #5f8c74;
  height: 51%;
}
.bin-39 {
  background: #4d7769;
  height: 46%;
}
.bin-44 {
  background: #5a6f7a;
  height: 47%;
}
.bin-49 {
  background: #6f6681;
  height: 53%;
}
.bin-54 {
  background: #8a6680;
  height: 66%;
}
.bin-59 {
  background: #a7686e;
  height: 64%;
}
.bin-64 {
  background: #bd7257;
  height: 73%;
}
.bin-65 {
  background: var(--orange);
  height: 91%;
}
.drawer-total {
  background: var(--card);
  border: 1px solid var(--line-dark);
  display: grid;
  gap: 0.14rem;
  left: 38px;
  padding: 0.65rem 0.8rem;
  position: absolute;
  top: 280px;
  width: 210px;
  z-index: 2;
}
.drawer-total span,
.drawer-total small {
  color: var(--ink-soft);
  font-size: 0.58rem;
}
.drawer-total b {
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}
.drawer-note {
  background: #fff3e7;
  border: 2px solid var(--orange);
  bottom: 25px;
  display: grid;
  gap: 0.15rem;
  padding: 0.6rem 0.8rem;
  position: absolute;
  right: 30px;
  text-align: right;
  z-index: 2;
}
.drawer-note b {
  font-size: 0.67rem;
}
.drawer-note span {
  color: var(--orange);
  font-size: 1.15rem;
  font-weight: 800;
}

.compare-panel {
  background: var(--card);
  border: 1px solid var(--line-dark);
  box-shadow: var(--shadow);
  margin-bottom: 3.5rem;
  padding: clamp(1.2rem, 3vw, 2rem);
}
.section-heading {
  align-items: flex-end;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
}
.compare-heading {
  border-bottom: 1px solid var(--line);
  padding-bottom: 1.2rem;
}
.compare-actions {
  align-items: center;
  display: flex;
  gap: 0.75rem;
}
.compare-actions > span {
  background: var(--green-pale);
  color: var(--green-dark);
  font-size: 0.76rem;
  font-weight: 800;
  padding: 0.5rem 0.62rem;
}
button {
  background: var(--green-dark);
  border: 1px solid var(--green-dark);
  color: white;
  font-size: 0.78rem;
  font-weight: 750;
  min-height: 38px;
  padding: 0.58rem 0.8rem;
}
button:hover:not(:disabled) {
  background: var(--green);
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}
.metric-controls {
  align-items: end;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  padding: 1.25rem 0 0;
}
label {
  display: grid;
  gap: 0.38rem;
}
label > span {
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 750;
}
input,
select {
  background: var(--card);
  border: 1px solid var(--line-dark);
  border-radius: 0;
  min-height: 42px;
  padding: 0.55rem 0.72rem;
}
select {
  min-width: 154px;
}
.metric-note {
  color: var(--ink-soft);
  font-size: 0.76rem;
  line-height: 1.7;
  margin: 0.8rem 0 1.2rem;
}
.empty-compare {
  background: var(--paper);
  border: 1px dashed var(--line-dark);
  color: var(--ink-soft);
  font-size: 0.84rem;
  padding: 1.5rem;
  text-align: center;
}

.compare-list {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.compare-card {
  border: 1px solid var(--line);
  min-width: 0;
  padding: 0.8rem;
}
.compare-title {
  align-items: flex-start;
  display: flex;
  justify-content: space-between;
}
.compare-title > div {
  display: grid;
  gap: 0.15rem;
}
.compare-title span {
  color: var(--ink-soft);
  font-size: 0.63rem;
}
.compare-title strong {
  font-size: 0.94rem;
}
.compare-title button {
  background: transparent;
  border: 0;
  color: var(--ink-soft);
  font-size: 1.1rem;
  min-height: 28px;
  padding: 0 0.2rem;
}
.age-rows {
  display: grid;
  gap: 0.26rem;
  margin-top: 0.7rem;
}
.age-row {
  align-items: center;
  display: grid;
  gap: 0.35rem;
  grid-template-columns: 27px 1fr 36px;
}
.age-row span {
  color: var(--ink-soft);
  font-size: 0.55rem;
}
.age-row svg {
  height: 8px;
  width: 100%;
}
.age-row b {
  font-size: 0.57rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.age-track {
  fill: #e2e5df;
}
.age-color-0 {
  fill: #bdcdb8;
}
.age-color-1 {
  fill: #9fb89e;
}
.age-color-2 {
  fill: #7fa587;
}
.age-color-3 {
  fill: #5f8c74;
}
.age-color-4 {
  fill: #4d7769;
}
.age-color-5 {
  fill: #5a6f7a;
}
.age-color-6 {
  fill: #6f6681;
}
.age-color-7 {
  fill: #8a6680;
}
.age-color-8 {
  fill: #a7686e;
}
.age-color-9 {
  fill: #bd7257;
}
.age-color-10 {
  fill: #c97845;
}
.trend-box {
  border-top: 1px solid var(--line);
  margin-top: 0.7rem;
  padding-top: 0.55rem;
}
.trend-box > div {
  align-items: baseline;
  display: flex;
  justify-content: space-between;
}
.trend-box span,
.trend-box small {
  color: var(--ink-soft);
  font-size: 0.58rem;
}
.trend-box b {
  color: var(--orange);
  font-size: 0.85rem;
}
.sparkline {
  display: block;
  height: 52px;
  overflow: visible;
  width: 100%;
}
.spark-grid {
  stroke: var(--line);
  stroke-width: 1;
}
.spark-path {
  fill: none;
  stroke: var(--green);
  stroke-linejoin: round;
  stroke-width: 2.2;
}
.spark-marker {
  fill: var(--orange);
  stroke: var(--card);
  stroke-width: 1.5;
}
.count-pair {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 0.4rem;
  margin: 0.55rem 0 0;
  padding-top: 0.55rem;
}
.count-pair div {
  align-items: baseline;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}
.count-pair dt {
  color: var(--ink-soft);
  font-size: 0.6rem;
}
.count-pair dd {
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  font-weight: 750;
  margin: 0;
}

.finder {
  margin: 0 0 1.5rem;
}
.finder .section-heading {
  border-bottom: 1px solid var(--line-dark);
  padding-bottom: 1rem;
}
#data-status {
  color: var(--ink-soft);
  font-size: 0.72rem;
  margin: 0;
}
.controls {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: minmax(220px, 1fr) repeat(2, minmax(170px, 0.4fr));
  padding-top: 1rem;
}
.controls input,
.controls select {
  width: 100%;
}
.results-section {
  margin-top: 2rem;
}
.results-heading {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.results-heading p {
  color: var(--ink-soft);
  font-size: 0.76rem;
  margin: 0;
}
.results-heading b {
  color: var(--ink);
  font-size: 1.05rem;
}
.place-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.place-card {
  background: var(--card);
  border: 1px solid var(--line);
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
}
.place-card:hover {
  border-color: var(--line-dark);
  box-shadow: 0 6px 18px rgb(34 54 42 / 7%);
}
.place-heading {
  align-items: flex-start;
  display: flex;
  justify-content: space-between;
}
.place-heading p {
  color: var(--ink-soft);
  font-size: 0.62rem;
  margin: 0 0 0.18rem;
}
.place-heading h3 {
  font-size: 1rem;
}
.place-heading > strong {
  color: var(--orange);
  font-size: 1.2rem;
  font-variant-numeric: tabular-nums;
}
.focus-label {
  align-items: baseline;
  display: flex;
  justify-content: space-between;
}
.focus-label span {
  color: var(--ink-soft);
  font-size: 0.68rem;
}
.focus-label b {
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}
.distribution-bar {
  border: 1px solid var(--line);
  display: block;
  height: 16px;
  width: 100%;
}
.place-counts {
  display: grid;
  gap: 0.42rem;
  margin: 0;
}
.place-counts div {
  align-items: baseline;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
.place-counts dt {
  color: var(--ink-soft);
  font-size: 0.65rem;
}
.place-counts dd {
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  font-weight: 750;
  margin: 0;
  text-align: right;
}
.compare-button {
  background: transparent;
  color: var(--green-dark);
  margin-top: auto;
  width: 100%;
}
.compare-button:hover:not(:disabled),
.compare-button.is-selected {
  background: var(--green-dark);
  color: white;
}
.no-results {
  background: var(--card);
  border: 1px dashed var(--line-dark);
  grid-column: 1 / -1;
  padding: 2.5rem;
  text-align: center;
}
.no-results > span {
  color: var(--orange);
  font-size: 2rem;
  font-weight: 800;
}
.no-results p {
  color: var(--ink-soft);
}
.boundary {
  align-items: flex-start;
  background: #fff7ed;
  border: 1px solid #dfb792;
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1rem;
}
.boundary > span {
  align-items: center;
  background: var(--orange);
  color: white;
  display: flex;
  flex: 0 0 38px;
  font-weight: 800;
  height: 38px;
  justify-content: center;
}
.boundary strong {
  font-size: 0.86rem;
}
.boundary p {
  color: #684f3d;
  font-size: 0.75rem;
  line-height: 1.7;
  margin: 0.3rem 0 0;
}

.text-page {
  max-width: 1040px;
  padding-top: 4rem;
}
.page-intro {
  border-bottom: 1px solid var(--line-dark);
  padding-bottom: 2rem;
}
.page-intro p:last-child {
  color: var(--ink-soft);
  line-height: 1.85;
  margin: 1rem 0 0;
  max-width: 48rem;
}
.age-guide {
  background: var(--card);
  border: 1px solid var(--line-dark);
  margin-top: 2rem;
  padding: 1.2rem;
}
.age-guide-strip {
  display: grid;
  grid-template-columns: repeat(11, 1fr);
}
.age-guide-strip i {
  align-items: center;
  border-right: 2px solid var(--card);
  color: white;
  display: flex;
  font-size: 0.62rem;
  font-style: normal;
  font-weight: 750;
  height: 38px;
  justify-content: center;
}
.age-guide-strip i:nth-child(1) {
  background: #809879;
}
.age-guide-strip i:nth-child(2) {
  background: #789274;
}
.age-guide-strip i:nth-child(3) {
  background: #6d8c70;
}
.age-guide-strip i:nth-child(4) {
  background: #5f8069;
}
.age-guide-strip i:nth-child(5) {
  background: #4d7769;
}
.age-guide-strip i:nth-child(6) {
  background: #5a6f7a;
}
.age-guide-strip i:nth-child(7) {
  background: #6f6681;
}
.age-guide-strip i:nth-child(8) {
  background: #8a6680;
}
.age-guide-strip i:nth-child(9) {
  background: #a7686e;
}
.age-guide-strip i:nth-child(10) {
  background: #bd7257;
}
.age-guide-strip i:nth-child(11) {
  background: #c97845;
}
.age-guide p {
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.7;
  margin: 0.9rem 0 0;
}
.guide-grid,
.privacy-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 1.2rem;
}
.guide-grid article,
.privacy-grid article {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 1.2rem;
}
.guide-grid article > span {
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 800;
}
.guide-grid h2,
.privacy-grid h2 {
  font-size: 1rem;
  margin-top: 0.35rem;
}
.guide-grid p,
.privacy-grid p {
  color: var(--ink-soft);
  font-size: 0.8rem;
  line-height: 1.75;
}
.privacy-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 2rem;
}
.note-panel {
  background: var(--card);
  border-left: 5px solid var(--orange);
  margin-top: 1.2rem;
  padding: 1.4rem;
}
.note-panel h2 {
  font-size: 1.05rem;
}
.note-panel p {
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.8;
}
.note-panel a {
  font-size: 0.8rem;
  font-weight: 700;
}
.source-ledger {
  border-left: 1px solid var(--line-dark);
  border-top: 1px solid var(--line-dark);
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-top: 2rem;
}
.source-ledger > div {
  border-bottom: 1px solid var(--line-dark);
  border-right: 1px solid var(--line-dark);
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
}
.source-ledger span {
  color: var(--ink-soft);
  font-size: 0.65rem;
}
.source-ledger strong {
  font-size: 0.78rem;
  line-height: 1.55;
}
.source-ledger a {
  font-size: 0.72rem;
}
.prose-section {
  margin-top: 2rem;
}
.prose-section h2 {
  font-size: 1.1rem;
}
.prose-section p,
.prose-section li {
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.8;
}

footer {
  align-items: flex-start;
  background: var(--ink);
  color: white;
  display: flex;
  justify-content: space-between;
  padding: 2.4rem 4vw;
}
footer strong {
  font-size: 0.9rem;
}
footer p {
  color: #bdc7bf;
  font-size: 0.7rem;
  margin: 0.45rem 0 0;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-links a {
  color: #e3e9e3;
  font-size: 0.72rem;
}

@media (max-width: 1050px) {
  .hero-shell {
    grid-template-columns: 1fr;
    padding-top: 3rem;
  }
  .age-drawer {
    max-width: 680px;
    width: 100%;
  }
  .compare-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .place-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .source-ledger {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .site-header {
    align-items: flex-start;
    gap: 0.75rem;
    padding-bottom: 0.7rem;
    padding-top: 0.7rem;
    position: static;
  }
  .brand {
    min-height: 36px;
  }
  .site-header nav {
    display: grid;
    gap: 0.25rem 0.8rem;
    grid-template-columns: repeat(2, auto);
  }
  .site-header nav a {
    font-size: 0.72rem;
  }
  main {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .hero-shell {
    min-height: auto;
    padding: 2.5rem 0;
  }
  .age-drawer {
    height: 338px;
    padding: 3.2rem 1.5rem 1.5rem;
  }
  .age-bins {
    gap: 2px;
    height: 170px;
    padding-left: 0.55rem;
    padding-right: 0.55rem;
  }
  .drawer-total {
    left: 24px;
    top: 263px;
  }
  .drawer-note {
    bottom: 18px;
    right: 22px;
  }
  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }
  .compare-actions {
    justify-content: space-between;
    width: 100%;
  }
  .metric-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .metric-controls select {
    min-width: 0;
    width: 100%;
  }
  .compare-list,
  .place-grid,
  .guide-grid,
  .privacy-grid {
    grid-template-columns: 1fr;
  }
  .controls {
    grid-template-columns: 1fr;
  }
  .source-ledger {
    grid-template-columns: 1fr 1fr;
  }
  footer {
    flex-direction: column;
    gap: 1.5rem;
  }
}

@media (max-width: 430px) {
  .drawer-total {
    width: 184px;
  }
  .drawer-note {
    padding: 0.45rem 0.55rem;
  }
  .source-ledger {
    grid-template-columns: 1fr;
  }
  .age-guide-strip i {
    font-size: 0.52rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}