:root {
  --bg: #f2f8ff;
  --fg: #1d2a44;
  --muted: #53607a;
  --line: #d3e2f4;
  --card: #ffffff;
  --accent: #e8402f;
  --accent-soft: #ffe9e5;
  --kids: #12806a;
  --kids-soft: #dcf4ec;
  --radius: 18px;
  --sky: #cfe8ff;
  --hill: #b9e3c6;
  --sand: #f3d890;
  --sand2: #ebc878;
  --sandpit: #e4be68;
  --wood: #c98a54;
  --wood-d: #a96d3c;
  --cloud: #ffffff;
  --bubble: #ffffff;
  --grass: #2fb59a;
  --f-head: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Hiragino Sans", "Yu Gothic", sans-serif;
  --f-body: "BIZ UDPGothic", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101828;
    --fg: #eaf0fb;
    --muted: #a3b2cd;
    --line: #27385a;
    --card: #182440;
    --accent: #ff8070;
    --accent-soft: #3a1f26;
    --kids: #6fe0c2;
    --kids-soft: #15332e;
    --sky: #1c2c52;
    --hill: #1d4a44;
    --sand: #8f7a4c;
    --sand2: #7b6840;
    --sandpit: #6c5a38;
    --wood: #9a6a45;
    --wood-d: #7b5334;
    --cloud: #3b4d78;
    --bubble: #eaf0fb;
    --grass: #4fd1b0;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.75 var(--f-body);
}
a {
  color: inherit;
}
.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}
.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ヘッダー・フッター */
.site-header {
  border-bottom: 1px solid var(--line);
}
.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 56px;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--f-head);
  font-weight: 900;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--accent);
}
.site-header nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.site-header nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
}
.site-header nav a:hover {
  color: var(--fg);
}
.site-footer {
  margin-top: 64px;
  padding: 24px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer p {
  margin: 4px 0;
}

/* 本文 */
main {
  padding-top: 32px;
  min-height: 60vh;
}
.hero {
  padding: 24px 0 8px;
}
.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  line-height: 1.3;
}
.hero p,
.lead {
  margin: 0;
  color: var(--muted);
}
h1,
h2 {
  font-family: var(--f-head);
  font-weight: 900;
}
h1 {
  font-size: 1.7rem;
  line-height: 1.3;
}
section {
  margin-top: 36px;
}
.sec-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.sec-head h2 {
  margin: 0 0 12px;
  font-size: 1.25rem;
}
.sec-head a {
  color: var(--muted);
  font-size: 0.9rem;
}
.empty {
  color: var(--muted);
  padding: 24px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  text-align: center;
}

/* さがす用のチップ */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--fg);
}
a.chip:hover {
  border-color: var(--accent);
}
.chip-kids {
  background: var(--kids-soft);
  border-color: transparent;
  color: var(--kids);
}
.chip-lab {
  border-style: dashed;
  color: var(--muted);
}

/* 企画カード */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 0.12s ease, border-color 0.12s ease;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.card-emoji {
  font-size: 1.8rem;
  line-height: 1.2;
}
.card-title {
  font-weight: 700;
}
.card-desc {
  color: var(--muted);
  font-size: 0.9rem;
}
.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

/* 文章ページ（プライバシーポリシーなど） */
.prose {
  max-width: 680px;
}
.prose h2 {
  margin-top: 28px;
  font-size: 1.1rem;
}

@media (prefers-reduced-motion: reduce) {
  .card {
    transition: none;
  }
}

.intro-box{margin:32px 0 8px;padding:16px 18px;border-radius:12px;background:var(--card,#f6f6f4);line-height:1.8;font-size:.95rem}
.intro-box .intro{margin:0 0 .6em}
.intro-box .intro:last-child{margin-bottom:0}

/* ---- トップの「遊び場」 ---- */
.playground {
  position: relative;
  margin: 0 -20px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 1000px) {
  .playground { margin: 0; border-radius: 28px; border: 1px solid var(--line); }
}
.hero-art { display: block; width: 100%; height: 152px; }
@media (min-width: 600px) { .hero-art { height: clamp(240px, 30vw, 330px); } }
.hero-art .a-tree { fill: var(--hill); stroke: var(--grass); stroke-width: 2; }
.hero-art .a-sky { fill: var(--sky); }
.hero-art .a-cloud { fill: var(--cloud); opacity: .9; }
.hero-art .a-hill { fill: var(--hill); }
.hero-art .a-sand { fill: var(--sand); }
.hero-art .a-sand2 { fill: var(--sand2); }
.hero-art .a-sandpit { fill: var(--sandpit); }
.hero-art .a-wood { fill: var(--wood); }
.hero-art .a-wood-d { fill: var(--wood-d); }
.hero-art .a-flag { fill: var(--accent); }
.hero-art .a-bubble { fill: var(--bubble); }
.hero-art .a-bubble-t { fill: #1d2a44; font: 900 15px var(--f-head); }
.hero-art .a-grass path { fill: none; stroke: var(--grass); stroke-width: 3; stroke-linecap: round; }
.hero-copy { padding: 24px 0 0; }
.hero-copy h1 { margin: 0 0 8px; font-size: clamp(1.6rem, 5.4vw, 2.5rem); line-height: 1.25; letter-spacing: .01em; }
.hero-copy p { margin: 0; color: var(--muted); max-width: 34em; }

/* 動き: 画面を開いたときにだけ、小人たちが働く */
.hero-art .walk, .hero-art .bob, .hero-art .hammer, .hero-art .shovel, .hero-art .mega, .hero-art .a-cloud, .hero-art .bubble, .hero-art .c-paint { transform-box: fill-box; transform-origin: center bottom; }
@media (prefers-reduced-motion: no-preference) {
  .hero-art .bob { animation: bob .6s ease-in-out infinite alternate; }
  .hero-art .c-hammer .bob { animation-duration: .32s; }
  .hero-art .hammer { transform-origin: 20% 90%; animation: hit .32s ease-in infinite alternate; }
  .hero-art .shovel { animation: dig .9s ease-in-out infinite alternate; }
  .hero-art .mega { animation: shout 1.8s ease-in-out infinite; }
  .hero-art .walk-a { animation: pace-a 14s linear infinite; }
  .hero-art .walk-b { animation: pace-b 19s linear infinite; }
  .hero-art .walk .bob { animation-duration: .28s; }
  .hero-art .cloud1 { animation: drift 60s linear infinite alternate; }
  .hero-art .cloud2 { animation: drift 80s linear infinite alternate-reverse; }
  .hero-art .bubble { animation: pop 7s ease-in-out infinite; transform-origin: 50% 100%; }
  .hero-art .a-flag { animation: wave 1.1s ease-in-out infinite alternate; transform-box: fill-box; transform-origin: left center; }
}
@keyframes bob { from { transform: translateY(0); } to { transform: translateY(-3px); } }
@keyframes hit { from { transform: rotate(-30deg); } to { transform: rotate(18deg); } }
@keyframes dig { from { transform: rotate(-10deg); } to { transform: rotate(14deg); } }
@keyframes shout { 0%, 70%, 100% { transform: scale(1); } 80% { transform: scale(1.12); } }
@keyframes wave { from { transform: skewY(-6deg); } to { transform: skewY(6deg); } }
@keyframes drift { from { transform: translateX(-40px); } to { transform: translateX(60px); } }
@keyframes pop { 0%, 8% { transform: scale(.4); opacity: 0; } 14%, 80% { transform: scale(1); opacity: 1; } 90%, 100% { transform: scale(.4); opacity: 0; } }
@keyframes pace-a { 0% { transform: translate(290px, 262px) scaleX(1); } 49% { transform: translate(560px, 262px) scaleX(1); } 50% { transform: translate(560px, 262px) scaleX(-1); } 99% { transform: translate(290px, 262px) scaleX(-1); } 100% { transform: translate(290px, 262px) scaleX(1); } }
@keyframes pace-b { 0% { transform: translate(600px, 281px) scaleX(-1); } 49% { transform: translate(340px, 281px) scaleX(-1); } 50% { transform: translate(340px, 281px) scaleX(1); } 99% { transform: translate(600px, 281px) scaleX(1); } 100% { transform: translate(600px, 281px) scaleX(-1); } }

/* ---- セクション見出し（あそびば・すなば・こうさくしつ） ---- */
.zone { margin-top: 44px; }
.zone .sec-head h2 { font-size: 1.45rem; margin: 0; }
.zone .sec-head { margin-bottom: 4px; align-items: flex-end; }
.zone-note { margin: 0 0 14px; color: var(--muted); font-size: .92rem; }
.zone-lab .grid .card { border-style: dashed; }
.zone-empty { display: flex; gap: 14px; align-items: center; padding: 16px 18px; border: 2px dashed var(--line); border-radius: var(--radius); color: var(--muted); }
.zone-empty svg { flex: none; width: 54px; height: 54px; }

/* ---- カードのタイトル画像 ---- */
.card { padding: 0; overflow: hidden; gap: 0; }
.card-thumb { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; background: var(--accent-soft); border-bottom: 1px solid var(--line); }
.card-body { display: flex; flex-direction: column; gap: 4px; padding: 14px 18px 18px; }
.card-title { font-family: var(--f-head); font-weight: 900; font-size: 1.08rem; }
.card:hover { transform: translateY(-3px) rotate(-.4deg); }
.card:focus-visible, a.chip:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) {
  .card:hover { transform: none; }
}

.prose table{border-collapse:collapse;margin:8px 0 16px}
.prose th{white-space:nowrap;text-align:left;vertical-align:top;padding:6px 14px 6px 0}
.prose td{padding:6px 0}