/* ============================================================
   おえかきくるま LP
   カラー: アプリ本体のテーマを踏襲
   - オレンジ: #EF6C00 / #E65100 / #FB8C00
   - 空:      #4FC3F7 → #B3E5FC → #E1F5FE
   - 芝生:    #66BB6A / #43A047  土: #8D6E63
   - 金:      #FFD740
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

/* hidden属性はどのdisplay指定よりも優先して非表示にする */
[hidden] { display: none !important; }

:root {
  --orange: #EF6C00;
  --orange-deep: #E65100;
  --orange-light: #FB8C00;
  --cream: #FFF8F0;
  --ink: #4E342E;
  --ink-soft: #6D5B54;
  --sky-top: #4FC3F7;
  --sky-mid: #B3E5FC;
  --sky-btm: #E1F5FE;
  --grass: #66BB6A;
  --grass-deep: #43A047;
  --soil: #8D6E63;
  --gold: #FFD740;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'M PLUS Rounded 1c', 'Hiragino Maru Gothic ProN', 'BIZ UDGothic', 'Yu Gothic', sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.7;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.35; }

/* ---------------- Header ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 248, 240, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 3px solid #FFE0B2;
}
.header-inner {
  max-width: 1100px; margin: 0 auto; padding: 10px 20px;
  display: flex; align-items: center; gap: 20px;
}
.logo { display: flex; align-items: center; gap: 8px; font-weight: 900; font-size: 1.25rem; color: var(--orange-deep); }
.logo-icon { font-size: 1.5rem; }
.nav { display: flex; gap: 18px; margin-left: auto; font-weight: 700; font-size: 0.95rem; color: var(--ink-soft); }
.nav a:hover { color: var(--orange); }
.header-cta {
  background: var(--orange); color: #fff; font-weight: 900;
  padding: 8px 18px; border-radius: 999px; font-size: 0.9rem;
  box-shadow: 0 3px 0 var(--orange-deep);
  transition: transform 0.15s;
}
.header-cta:hover { transform: translateY(-2px); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  background: linear-gradient(180deg, var(--sky-top) 0%, var(--sky-mid) 55%, var(--sky-btm) 100%);
  padding: 64px 20px 110px;
}
.hero-inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: center;
}
.hero-badge {
  display: inline-block;
  background: #fff; color: var(--orange-deep); font-weight: 900;
  padding: 6px 18px; border-radius: 999px; font-size: 0.95rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  margin-bottom: 18px;
}
.hero-title {
  font-size: clamp(2.2rem, 5.2vw, 3.6rem);
  font-weight: 900; color: #01579B;
  text-shadow: 0 2px 0 rgba(255,255,255,0.6);
  margin-bottom: 18px;
}
.hero-title .accent {
  color: var(--orange-deep);
  background: linear-gradient(transparent 62%, var(--gold) 62%, var(--gold) 92%, transparent 92%);
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.15rem); font-weight: 700; color: #075482;
  margin-bottom: 26px;
}
.hero-note { font-size: 0.8rem; color: #075482; margin-top: 12px; opacity: 0.85; }

/* ストアバッジ */
.store-badges { display: flex; gap: 14px; flex-wrap: wrap; }
.store-badges.center { justify-content: center; }
.store-badge {
  display: flex; align-items: center; gap: 10px;
  background: #212121; color: #fff;
  border-radius: 12px; padding: 8px 20px;
  min-width: 170px;
}
.store-badge .store-icon { font-size: 1.5rem; }
.store-badge .store-text { display: flex; flex-direction: column; line-height: 1.25; }
.store-badge small { font-size: 0.68rem; opacity: 0.8; }
.store-badge strong { font-size: 1.05rem; font-weight: 900; }
.store-badge.coming { opacity: 0.92; }
.store-badge.soon2 { background: #424242; }

/* スマホモックアップ */
.hero-phone-wrap { position: relative; display: flex; justify-content: center; }
.phone {
  width: min(300px, 78vw); aspect-ratio: 9 / 18.5;
  background: #263238; border-radius: 36px; padding: 10px;
  box-shadow: 0 24px 48px rgba(1, 87, 155, 0.35);
  transform: rotate(2.5deg);
}
.phone-screen {
  width: 100%; height: 100%; border-radius: 28px; overflow: hidden;
  background: linear-gradient(180deg, var(--sky-top), var(--sky-mid) 60%, var(--sky-btm));
  display: flex; flex-direction: column; position: relative;
}
.phone-shadow {
  position: absolute; bottom: -22px; left: 50%; transform: translateX(-50%);
  width: 60%; height: 22px; background: rgba(1,87,155,0.25);
  border-radius: 50%; filter: blur(8px);
}

.game-hud { display: flex; align-items: center; gap: 8px; padding: 12px 12px 0; z-index: 3; }
.timer-pill {
  flex: 1; display: flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,0.95); border-radius: 999px; padding: 6px 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.timer-icon { font-size: 0.85rem; }
.timer-bar { flex: 1; height: 10px; background: #FFE0B2; border-radius: 999px; overflow: hidden; }
.timer-fill {
  display: block; height: 100%; background: #66BB6A; border-radius: 999px;
  animation: timerDrain 20s linear infinite;
}
@keyframes timerDrain { from { width: 100%; } to { width: 4%; } }
.timer-num { font-weight: 900; font-size: 0.95rem; color: #37474F; min-width: 1.6em; text-align: right; }
.dist-badge {
  background: rgba(255,255,255,0.95); border-radius: 999px; padding: 6px 10px;
  font-weight: 900; font-size: 0.8rem; color: var(--orange-deep);
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.game-sky { position: relative; flex: 1; overflow: hidden; }
.cloud {
  position: absolute; background: rgba(255,255,255,0.85); border-radius: 999px;
  animation: cloudMove linear infinite;
}
.cloud.c1 { width: 90px; height: 30px; top: 14%; animation-duration: 9s; }
.cloud.c2 { width: 60px; height: 22px; top: 34%; animation-duration: 6.5s; animation-delay: -3s; }
.cloud.c3 { width: 110px; height: 34px; top: 6%; animation-duration: 12s; animation-delay: -6s; }
@keyframes cloudMove { from { left: 110%; } to { left: -45%; } }

.hero-car {
  position: absolute; bottom: 56px; left: 50%; transform: translateX(-54%);
  width: 62%; z-index: 2;
  animation: carBob 0.55s ease-in-out infinite;
}
@keyframes carBob {
  0%, 100% { margin-bottom: 0; }
  50% { margin-bottom: 5px; }
}
/* コブが車の下を通るタイミングで自動ジャンプ(14s周期の前半=横断中の約42%地点) */
.hero-car svg { animation: carJump 14s linear infinite; }
@keyframes carJump {
  0%, 18% { transform: translateY(0) rotate(0deg); }
  20.5% { transform: translateY(-44px) rotate(-5deg); }
  23% { transform: translateY(-50px) rotate(2deg); }
  26.5% { transform: translateY(0) rotate(0deg); }
  27.5% { transform: translateY(-6px); }
  28.5%, 100% { transform: translateY(0); }
}

/* ---- 地面の仕掛け(右から左へ流れる) ----
   14s周期のうち前半7sで横断し、残りは画面外で待機。
   4つを3.5s間隔でずらして配置(速度はそのまま間隔だけ拡大) */
.obstacle {
  position: absolute; z-index: 1;
  animation: obstacleMove 14s linear infinite;
}
@keyframes obstacleMove {
  0% { left: 108%; }
  50%, 100% { left: -30%; }
}
/* コブ: 土の盛り上がり+芝生 */
.ob-bump {
  bottom: 64px; width: 58px; height: 24px;
  background: var(--soil);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  border-top: 5px solid var(--grass-deep);
  animation-delay: 0s;
}
/* 水たまり */
.ob-puddle {
  bottom: 62px; width: 50px; height: 11px;
  background: radial-gradient(ellipse at 50% 35%, #B3E5FC 0%, #4FC3F7 70%);
  border-radius: 50%;
  animation-delay: -3.5s;
}
/* 落ち葉 */
.ob-leaves { bottom: 63px; width: 54px; height: 14px; }
.ob-leaves i {
  position: absolute; width: 15px; height: 9px;
  border-radius: 80% 10% 80% 10%;
}
.ob-leaves i:nth-child(1) { left: 0; bottom: 0; background: #F57C00; transform: rotate(-12deg); }
.ob-leaves i:nth-child(2) { left: 19px; bottom: 3px; background: #FBC02D; transform: rotate(18deg); }
.ob-leaves i:nth-child(3) { left: 38px; bottom: 0; background: #E64A19; transform: rotate(-24deg); }
.ob-leaves { animation-delay: -7s; }
/* 砂場 */
.ob-sand {
  bottom: 62px; width: 60px; height: 10px;
  background: #E6C88F;
  border-radius: 50%;
  box-shadow: inset 0 -2px 0 #D4B26E;
  animation-delay: -10.5s;
}
.game-ground { position: absolute; bottom: 0; left: 0; right: 0; z-index: 1; }
.grass { height: 14px; background: linear-gradient(180deg, var(--grass), var(--grass-deep)); }
.soil { height: 52px; background: var(--soil); }

.game-buttons {
  display: flex; gap: 8px; padding: 10px; background: #FFF8F0; z-index: 3;
}
.jump-btn {
  flex: 1.3; border: none; cursor: pointer;
  background: #8D6E63; color: #fff; font-weight: 900; font-size: 0.95rem;
  font-family: inherit;
  padding: 12px 8px; border-radius: 999px;
  box-shadow: 0 3px 0 #5D4037;
  animation: jumpBtnPress 14s linear infinite; /* 自動ジャンプと同期して押される演出 */
}
@keyframes jumpBtnPress {
  0%, 17.5% { transform: scale(1) translateY(0); box-shadow: 0 3px 0 #5D4037; }
  19% { transform: scale(0.94) translateY(3px); box-shadow: 0 0 0 #5D4037; background: #6D4C41; }
  21%, 100% { transform: scale(1) translateY(0); box-shadow: 0 3px 0 #5D4037; }
}
.retry-btn {
  flex: 1; display: flex; align-items: center; justify-content: center;
  background: #fff; color: #8D6E63; font-weight: 900; font-size: 0.85rem;
  border: 2px solid #D7CCC8; border-radius: 999px;
}

.hero-wave { position: absolute; bottom: -1px; left: 0; right: 0; line-height: 0; }
.hero-wave svg { width: 100%; height: 90px; }

/* ---------------- Sections common ---------------- */
.section { max-width: 1100px; margin: 0 auto; padding: 72px 20px 20px; }
.section-title {
  text-align: center; font-size: clamp(1.5rem, 3.4vw, 2.1rem); font-weight: 900;
  color: var(--orange-deep); margin-bottom: 40px;
}
.title-deco { margin-right: 6px; }
.section-lead { text-align: center; font-weight: 700; color: var(--ink-soft); margin: -26px 0 26px; }

/* ---------------- Growth (知育ポイント) ---------------- */
.growth-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; max-width: 900px; margin: 0 auto; }
.growth-card {
  display: flex; flex-direction: column;
  background: #fff; border-radius: 22px; padding: 28px 26px;
  border: 3px solid #FFE0B2;
  box-shadow: 0 6px 20px rgba(239, 108, 0, 0.08);
}
.growth-icon {
  width: 96px; height: 96px; border-radius: 24px;
  overflow: hidden;
  background: #fff;
  box-shadow: inset 0 0 0 3px #FFE0B2;
  margin-bottom: 14px;
}
.growth-icon img { width: 100%; height: 100%; object-fit: cover; }
.growth-card h3 { font-size: 1.15rem; font-weight: 900; color: var(--orange-deep); margin-bottom: 8px; }
.growth-card p { font-size: 0.95rem; color: var(--ink-soft); }
.growth-note {
  max-width: 720px; margin: 26px auto 0; text-align: center;
  background: #FFF3E0; border-radius: 16px; padding: 14px 22px;
  font-size: 0.92rem; font-weight: 700; color: var(--ink);
}

/* ---------------- Steps ---------------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step-card {
  position: relative; background: #fff; border-radius: 24px; padding: 30px 22px 24px;
  box-shadow: 0 6px 20px rgba(239, 108, 0, 0.1);
  border: 3px solid #FFE0B2;
  text-align: center;
}
.step-num {
  position: absolute; top: -18px; left: 50%; transform: translateX(-50%);
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--orange); color: #fff;
  font-weight: 900; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 0 var(--orange-deep);
}
.step-illust { margin-bottom: 12px; }
.step-title { font-size: 1.15rem; font-weight: 900; color: var(--ink); margin-bottom: 8px; }
.step-text { font-size: 0.92rem; color: var(--ink-soft); }

/* step1: 描き順アニメ */
.draw-anim {
  stroke-dasharray: 420; stroke-dashoffset: 420;
  animation: drawPath 3.2s ease-in-out infinite;
}
@keyframes drawPath {
  0% { stroke-dashoffset: 420; }
  55%, 85% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: 0; opacity: 0; }
}
/* step2: 小刻みに走る */
.mini-car-move { animation: miniRun 0.5s ease-in-out infinite; }
@keyframes miniRun { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }
/* step3: 王冠 */
.crown-bounce { animation: crownPop 1.6s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes crownPop { 0%,100% { transform: scale(1) rotate(-4deg); } 50% { transform: scale(1.15) rotate(4deg); } }

/* ---------------- Features ---------------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
/* カード数が3の倍数+1のとき、最後の1枚が左端に取り残されるので中央の列へ寄せる */
.feature-card:last-child:nth-child(3n + 1) { grid-column: 2; }
.feature-card {
  background: #fff; border-radius: 20px; padding: 26px 22px;
  box-shadow: 0 4px 16px rgba(78, 52, 46, 0.07);
  transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 10px 24px rgba(239,108,0,0.15); }
.feature-icon {
  width: 76px; height: 76px; border-radius: 20px;
  overflow: hidden;
  background: #fff;
  box-shadow: inset 0 0 0 3px #FFE0B2;
  margin-bottom: 12px;
}
.feature-icon img { width: 100%; height: 100%; object-fit: cover; }
.feature-card h3 { font-size: 1.05rem; font-weight: 900; margin-bottom: 8px; color: var(--orange-deep); }
.feature-card p { font-size: 0.9rem; color: var(--ink-soft); }

/* ---------------- Demo ---------------- */
.demo-box {
  background: #fff; border-radius: 28px; padding: 24px;
  border: 4px dashed var(--orange-light);
  max-width: 720px; margin: 0 auto;
}
.palette { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 14px; }
.swatch {
  width: 34px; height: 34px; border-radius: 50%; border: 3px solid #fff; cursor: pointer;
  box-shadow: 0 0 0 2px #E0E0E0, 0 2px 4px rgba(0,0,0,0.15);
  transition: transform 0.12s;
}
.swatch:hover { transform: scale(1.12); }
.swatch.active { box-shadow: 0 0 0 3px var(--orange), 0 2px 6px rgba(0,0,0,0.2); transform: scale(1.15); }

#drawCanvas {
  width: 100%; height: auto; touch-action: none; cursor: crosshair;
  background:
    linear-gradient(180deg, #FFFFFF 82%, #E8F5E9 82%);
  border: 3px solid #FFB74D; border-radius: 18px;
}
.demo-controls { display: flex; gap: 12px; justify-content: center; margin-top: 16px; }
.btn-clear, .btn-go {
  font-family: inherit; font-weight: 900; font-size: 1.05rem;
  border: none; border-radius: 999px; padding: 12px 30px; cursor: pointer;
  transition: transform 0.12s;
}
.btn-clear { background: #ECEFF1; color: #546E7A; box-shadow: 0 3px 0 #B0BEC5; }
.btn-go { background: var(--orange); color: #fff; box-shadow: 0 3px 0 var(--orange-deep); }
.btn-clear:hover, .btn-go:hover { transform: translateY(-2px); }
.btn-go:active, .btn-clear:active { transform: translateY(1px); box-shadow: none; }

.run-stage {
  position: relative; height: 300px; border-radius: 18px; overflow: hidden;
  background: linear-gradient(180deg, var(--sky-top), var(--sky-mid) 60%, var(--sky-btm));
  border: 3px solid #FFB74D;
}
.run-clouds span {
  position: absolute; font-size: 2rem; opacity: 0.9;
  animation: cloudMove linear infinite;
}
.run-clouds span:nth-child(1) { top: 12%; animation-duration: 7s; }
.run-clouds span:nth-child(2) { top: 34%; animation-duration: 10s; animation-delay: -4s; font-size: 1.4rem; }
.run-grass { position: absolute; bottom: 40px; left: 0; right: 0; height: 14px; background: linear-gradient(180deg, var(--grass), var(--grass-deep)); }
.run-soil { position: absolute; bottom: 0; left: 0; right: 0; height: 40px; background: var(--soil); }
.run-car { position: absolute; bottom: 50px; left: 0; will-change: transform; }
.run-car img { display: block; }
.run-car .demo-wheel {
  position: absolute; border-radius: 50%;
  background:
    conic-gradient(#CFD8DC 0 20deg, #546E7A 20deg 90deg, #CFD8DC 90deg 110deg, #546E7A 110deg 180deg,
                   #CFD8DC 180deg 200deg, #546E7A 200deg 270deg, #CFD8DC 270deg 290deg, #546E7A 290deg 360deg);
  border: 4px solid #263238;
  animation: wheelSpinDemo 0.5s linear infinite;
}
@keyframes wheelSpinDemo { to { transform: rotate(360deg); } }
.run-goal {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: clamp(1.6rem, 5vw, 2.4rem); font-weight: 900; color: var(--orange-deep);
  background: rgba(255, 248, 240, 0.75);
  animation: goalPop 0.4s ease-out;
}
@keyframes goalPop { from { transform: scale(0.6); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.demo-note { text-align: center; font-size: 0.85rem; color: var(--ink-soft); margin-top: 18px; }

/* ---------------- Parents ---------------- */
.parents { background: #fff; max-width: none; padding-left: 0; padding-right: 0; padding-bottom: 72px; margin-top: 72px; }
.parents .section-title { padding: 0 20px; }
.parents-grid {
  max-width: 1000px; margin: 0 auto; padding: 0 20px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px 34px;
}
.parent-item { display: flex; gap: 14px; align-items: flex-start; }
.parent-icon {
  flex-shrink: 0; width: 52px; height: 52px; border-radius: 16px;
  background: var(--cream); font-size: 1.6rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: inset 0 0 0 2px #FFE0B2;
}
.parent-item h3 { font-size: 1rem; font-weight: 900; color: var(--ink); margin-bottom: 4px; }
.parent-item p { font-size: 0.88rem; color: var(--ink-soft); }

/* ---------------- FAQ ---------------- */
.faq { padding-bottom: 40px; }
.faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-list details {
  background: #fff; border-radius: 16px; border: 2px solid #FFE0B2;
  overflow: hidden;
}
.faq-list summary {
  cursor: pointer; font-weight: 900; padding: 16px 20px; list-style: none;
  position: relative; color: var(--ink);
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::before { content: "Q. "; color: var(--orange); }
.faq-list summary::after {
  content: "＋"; position: absolute; right: 18px; color: var(--orange); font-weight: 900;
}
.faq-list details[open] summary::after { content: "－"; }
.faq-list details p { padding: 0 20px 16px 20px; font-size: 0.92rem; color: var(--ink-soft); }

/* ---------------- CTA ---------------- */
.cta {
  margin-top: 72px;
  background: linear-gradient(135deg, var(--orange-light), var(--orange-deep));
  padding: 64px 20px;
  text-align: center; color: #fff;
}
.cta h2 { font-size: clamp(1.6rem, 4vw, 2.3rem); font-weight: 900; margin-bottom: 10px; }
.cta p { font-weight: 700; margin-bottom: 26px; opacity: 0.95; }

/* ---------------- Footer ---------------- */
.site-footer { text-align: center; padding: 34px 20px; background: #4E342E; color: #FFE0B2; }
.footer-logo { font-weight: 900; font-size: 1.1rem; margin-bottom: 6px; }
.footer-links { font-size: 0.85rem; margin-bottom: 6px; }
.footer-links a { text-decoration: underline; opacity: 0.9; }
.footer-links a:hover { opacity: 1; color: #FFD740; }
.footer-copy { font-size: 0.8rem; opacity: 0.8; }

/* ---------------- Responsive ---------------- */
@media (max-width: 860px) {
  .nav { display: none; }
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-sub br { display: none; }
  .hero-copy { display: flex; flex-direction: column; align-items: center; }
  .steps { grid-template-columns: 1fr; gap: 34px; max-width: 420px; margin: 0 auto; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  /* 2カラムでは「3の倍数+1」の指定を打ち消し、奇数枚のときだけ中央へ寄せる */
  .feature-card:last-child:nth-child(3n + 1) { grid-column: auto; }
  .feature-card:last-child:nth-child(2n + 1) { grid-column: 1 / -1; justify-self: center; max-width: calc(50% - 10px); }
  .parents-grid { grid-template-columns: 1fr; }
  .growth-grid { grid-template-columns: 1fr; }
  .section-lead br { display: none; }
  /* 1カラム表示ではカード内のイラストを中央寄せ */
  .growth-icon, .feature-icon { margin-left: auto; margin-right: auto; }
  .growth-card, .feature-card { text-align: center; }
}
@media (max-width: 520px) {
  .feature-grid { grid-template-columns: 1fr; }
  /* 1カラムでは寄せの指定は不要 */
  .feature-card:last-child:nth-child(2n + 1) { grid-column: auto; max-width: none; }
  .store-badge { min-width: 150px; padding: 7px 14px; }
  .run-stage { height: 230px; }
}