:root{--navy:#06183f;--blue:#0b4fb3;--blue2:#2f5ea8;--sky:#a9c4ec;--pale:#f2f6fc;--line:#d3ddec;--ink:#14213d;--sub:#56657e;--top-h:72px;--card-h:0px;color-scheme:light}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%;background:#e9eff8}
body{font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic UI","Yu Gothic","Meiryo",sans-serif;font-size:15px;line-height:1.7;color:var(--ink);-webkit-text-size-adjust:100%}
.app{position:relative;height:100vh;height:100svh;min-height:620px;overflow:hidden;isolation:isolate;background:linear-gradient(180deg,#f7faff 0%,#e9eff8 100%)}
p{margin:0}
[hidden]{display:none!important}
button{font:inherit;color:inherit}
b{font-weight:700}

/* 3Dの舞台：左いっぱい。右に説明のカード（スマートフォンでは下に） */
.stage{position:absolute;z-index:1;left:16px;top:var(--top-h);right:calc(380px + 32px);bottom:16px;border-radius:18px;overflow:hidden;background:#eaf0f8;box-shadow:0 14px 40px rgba(6,24,63,.14),0 2px 6px rgba(6,24,63,.06);outline:none}
.stage:focus-visible{box-shadow:0 0 0 3px rgba(11,79,179,.45),0 14px 40px rgba(6,24,63,.14)}
.stage canvas{touch-action:pan-y}
.noscene{position:absolute;inset:0;display:grid;place-content:center;gap:6px;padding:24px;text-align:center;color:var(--sub);background:repeating-linear-gradient(45deg,#eef3fa,#eef3fa 12px,#e6edf7 12px,#e6edf7 24px)}
.labels,.hots{position:absolute;inset:0;pointer-events:none}
.labels{z-index:8}
.hots{z-index:6}
.lbl{position:absolute;left:0;top:0;padding:5px 9px;border-radius:8px;background:rgba(255,255,255,.95);border:1px solid var(--line);box-shadow:0 2px 8px rgba(6,24,63,.12);color:var(--navy);font-size:12.5px;line-height:1.3;white-space:nowrap;opacity:0;transition:opacity .3s}
.lbl b{display:block}
.lbl span{display:block;font-size:10.5px;color:var(--sub)}
.lbl.is-flow{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:700}
.lbl.is-on{opacity:1}
.hs{position:absolute;left:0;top:0;width:52px;height:52px;margin:-26px 0 0 -26px;padding:0;border:0;border-radius:50%;background:transparent;cursor:pointer;pointer-events:auto;appearance:none}
.hs::after{content:"";position:absolute;left:50%;top:50%;width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;background:#fff;border:2px solid var(--blue);box-shadow:0 0 0 0 rgba(11,79,179,.45);animation:pulse 2.2s ease-out infinite}
.hs.is-leaf::after{border-color:#d9822b}
.hs:hover::after,.hs:focus-visible::after{box-shadow:0 0 0 6px rgba(11,79,179,.3);animation:none}
.hs:focus-visible{outline:3px solid rgba(11,79,179,.5);outline-offset:-4px}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(11,79,179,.45)}80%,100%{box-shadow:0 0 0 12px rgba(11,79,179,0)}}
.hint{position:absolute;z-index:9;left:50%;bottom:14px;transform:translateX(-50%);padding:6px 14px;border-radius:999px;background:rgba(6,24,63,.78);color:#fff;font-size:12.5px;white-space:nowrap;pointer-events:none}

/* 上の帯 */
.top{position:absolute;left:16px;top:16px;z-index:8;display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;padding:8px 14px;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:12px;box-shadow:0 2px 10px rgba(6,24,63,.08);max-width:calc(100% - 380px - 48px)}
.brand{font-weight:700;font-size:14px;color:var(--navy);white-space:nowrap}
.progress{display:flex;flex-wrap:wrap;gap:4px;margin:0;padding:0;list-style:none}
.progress li{margin:0}
.progress button{width:22px;height:22px;border-radius:5px;border:1.5px solid var(--line);background:#fff;color:var(--sub);font-size:11px;font-weight:700;line-height:1;padding:0;cursor:pointer;appearance:none}
.progress button:disabled{cursor:default;opacity:.5}
.progress .is-done{background:var(--navy);border-color:var(--navy);color:#fff}
.progress .is-cur{border-color:var(--blue);color:var(--blue);box-shadow:0 0 0 2px rgba(11,79,179,.2)}
.progress .is-done.is-cur{background:var(--blue);border-color:var(--blue);color:#fff}
.found{font-size:12.5px;color:var(--sub);white-space:nowrap}
.found b{color:var(--navy);font-size:14px}

/* 説明のカード */
.card{position:absolute;z-index:9;right:16px;top:16px;width:380px;max-height:calc(100% - 32px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 28px rgba(6,24,63,.12);padding:22px 22px 18px}
.head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.step{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:.06em}
.fold{display:none;appearance:none;font-size:12.5px;color:var(--sub);background:var(--pale);border:0;border-radius:999px;padding:6px 12px;cursor:pointer}
.h{margin:4px 0 12px;font-size:21px;font-weight:700;line-height:1.4;color:var(--navy)}
.pair{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px;margin:0 0 14px;padding:9px 12px;background:var(--pale);border-radius:10px;color:var(--navy)}
.pair .w,.pair .l{font-weight:700;font-size:15px}
.pair .e{color:var(--sub)}
.pair .l{color:var(--blue)}
.lead p,.done p{margin:0 0 6px;font-size:15px;line-height:1.8}
.why{margin:10px 0 0;padding:10px 12px;border-radius:10px;background:#fff8ec;border:1px solid #f0dcb8}
.why-k{font-size:12px;font-weight:700;color:#8a4b00;letter-spacing:.06em;margin-bottom:2px}
.why p{margin:0 0 4px;font-size:14px;line-height:1.75;color:#4a3412}
.act{display:grid;gap:8px;margin:14px 0 4px}
.act.is-grid{grid-template-columns:1fr 1fr}
.act.is-one{grid-template-columns:1fr}
.act.is-three{grid-template-columns:1fr 1fr 1fr}
.btn{appearance:none;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;min-height:46px;padding:9px 12px;border-radius:10px;border:1.5px solid var(--navy);background:#fff;color:var(--navy);font-size:15px;font-weight:700;cursor:pointer;text-decoration:none;text-align:center;line-height:1.35}
.btn small{display:block;font-size:11.5px;font-weight:400;color:var(--sub);margin-top:2px}
.btn-main{background:var(--navy);color:#fff}
a.btn-main,a.btn-main:visited,a.btn-main:hover{color:#fff;text-decoration:none}
.btn[aria-pressed="true"]{background:var(--blue);border-color:var(--blue);color:#fff}
.btn[aria-pressed="true"] small{color:#dbe6f7}
.btn:disabled{opacity:.42;cursor:default}
.btn:focus-visible,.progress button:focus-visible,.fold:focus-visible{outline:3px solid rgba(11,79,179,.4);outline-offset:2px}
.turn{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:8px}
.turn .btn{min-height:40px;font-size:14px}
.meter{display:flex;align-items:center;gap:10px;margin:10px 0 2px;font-size:14px;color:var(--sub)}
.meter b{font-size:20px;color:var(--navy)}
.meter .bar{flex:1;height:8px;border-radius:99px;background:#e6ecf5;overflow:hidden}
.meter .bar i{display:block;height:100%;background:var(--blue2);border-radius:99px;transition:width .3s}
.warn{margin:10px 0 0;padding:10px 12px;border-radius:10px;background:var(--navy);color:#fff;font-size:14px;line-height:1.7}
.chores{margin:10px 0 0;padding:0;list-style:none;display:grid;gap:3px;font-size:14px;color:var(--sub)}
.chores .is-ok{color:var(--navy);font-weight:700}
.done{margin-top:12px;padding:12px 14px;border-left:3px solid var(--blue);background:#f6f9fe;border-radius:0 10px 10px 0}
.note{margin:10px 0 0;font-size:13px;color:var(--sub);line-height:1.7}
.nav{position:sticky;bottom:-18px;display:flex;justify-content:space-between;align-items:center;gap:8px;margin:16px -22px -18px;padding:12px 22px 18px;background:#fff;border-top:1px solid #edf1f7}
.nav .btn{min-height:44px;padding:8px 18px}
.nav .back{border-color:var(--line);color:var(--sub);font-weight:400}

.findbox{position:absolute;z-index:10;left:16px;top:calc(var(--top-h) + 8px);width:min(340px,calc(100% - 32px));background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:12px;padding:14px 16px 12px;box-shadow:0 8px 24px rgba(6,24,63,.14)}
.findbox .k{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:.06em}
.findbox .find-h{margin:4px 0 6px;font-size:16px;font-weight:700;color:var(--navy);line-height:1.5}
.findbox p{margin:0 0 4px;font-size:14px;line-height:1.75}
.findbox button{position:absolute;right:6px;top:6px;width:32px;height:32px;border:0;background:transparent;color:var(--sub);font-size:18px;cursor:pointer;appearance:none}
.toast{position:absolute;z-index:11;left:calc((100% - 380px - 32px) / 2);bottom:28px;transform:translate(-50%,8px);max-width:calc(100% - 32px);padding:10px 16px;border-radius:12px;background:var(--navy);color:#fff;font-size:14px;line-height:1.6;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* はじめ・地図 */
.overlay{position:absolute;inset:0;z-index:20;display:flex;align-items:center;justify-content:center;padding:16px;background:rgba(6,24,63,.26)}
.sheet{width:min(520px,100%);max-height:100%;overflow:auto;background:#fff;border-radius:18px;padding:28px 26px 24px;box-shadow:0 20px 50px rgba(6,24,63,.25)}
.sheet-wide{width:min(880px,100%)}
.sheet p{margin:0 0 10px;font-size:15px;line-height:1.85}
.title{margin:6px 0 16px;font-size:27px;font-weight:700;line-height:1.45;color:var(--navy)}
.sheet-h{margin:0 0 6px;font-size:23px;font-weight:700;line-height:1.4;color:var(--navy)}
.sheet-h:focus{outline:none}
.sub-h{margin:20px 0 4px;font-size:16px;font-weight:700;line-height:1.5;color:var(--navy)}
.kicker{font-size:12.5px;font-weight:700;color:var(--blue);letter-spacing:.08em;margin:0}
.sheet .small,.small{font-size:13.5px;color:var(--sub)}
.sheet>.btn{width:100%;margin-top:8px}
.maplist{margin:14px 0 6px;padding:0;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.maplist li{padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fbfcff}
.maplist .p{font-weight:700;color:var(--navy);font-size:14.5px;line-height:1.5}
.maplist .p em{font-style:normal;color:var(--blue)}
.maplist .d{font-size:13px;color:var(--sub);line-height:1.6;margin-top:2px}
.checks,.finds{margin:6px 0 4px;padding:0;list-style:none}
.checks label{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid #edf1f7;font-size:14.5px;line-height:1.6;cursor:pointer}
.checks input{width:18px;height:18px;margin:3px 0 0;accent-color:var(--blue);flex:none}
.finds li{padding:7px 0;border-bottom:1px solid #edf1f7;font-size:14px;line-height:1.6}
.finds li b{color:var(--navy)}
.finds li.is-no{color:var(--sub)}
.sheet .close-line{margin:18px 0 6px;padding:12px 14px;background:var(--pale);border-radius:10px;color:var(--navy);font-weight:700}
.row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}
.sheet .credit{margin:14px 0 0;font-size:12px;color:var(--sub);text-align:center}
.nojs{position:absolute;left:16px;right:16px;bottom:16px;z-index:30;background:#fff;padding:12px;border-radius:10px}
@media (hover:hover){.btn:hover{background:#f2f6fc}.btn-main:hover{background:#0d2557}.btn[aria-pressed="true"]:hover{background:#0a459c}}
@media (prefers-reduced-motion:reduce){.hs::after{animation:none}.lbl,.toast{transition:none}}

@media (max-width:1100px){
  .card{width:340px}
  .stage{right:calc(340px + 32px)}
  .top{max-width:calc(100% - 340px - 48px)}
  .toast{left:calc((100% - 340px - 32px) / 2)}
}
@media (max-width:759px){
  .app{min-height:600px}
  .top{left:8px;right:8px;top:8px;gap:4px 10px;padding:7px 10px;justify-content:space-between;max-width:none}
  .brand{font-size:12.5px;flex:1}
  .progress{order:3;width:100%;flex-wrap:nowrap;justify-content:space-between}
  .progress button{width:22px;height:22px}
  .stage{left:8px;right:8px;top:var(--top-h);bottom:calc(var(--card-h) + 8px);border-radius:12px}
  .card{left:0;right:0;bottom:0;top:auto;width:auto;max-height:52%;border-radius:16px 16px 0 0;padding:14px 16px 0;border-bottom:0}
  .nav{bottom:0;margin:12px -16px 0;padding:10px 16px calc(10px + env(safe-area-inset-bottom))}
  .fold{display:block}
  .card.is-folded .pair,.card.is-folded .lead,.card.is-folded .why,.card.is-folded .act,.card.is-folded .meter,.card.is-folded .warn,.card.is-folded .done,.card.is-folded .note,.card.is-folded .turn,.card.is-folded .chores{display:none}
  .card.is-folded .h{margin-bottom:0}
  .h{font-size:19px;margin-bottom:10px}
  .pair{margin-bottom:10px}
  .lead p,.done p{font-size:14.5px;line-height:1.75}
  .findbox{left:8px;right:8px;top:calc(var(--top-h) + 4px);width:auto}
  .toast{left:50%;bottom:calc(var(--card-h) + 16px)}
  .hs{width:48px;height:48px;margin:-24px 0 0 -24px}
  .lbl{font-size:11.5px;padding:4px 7px}
  .sheet{padding:22px 18px 18px}
  .title{font-size:23px}
  .maplist{grid-template-columns:1fr}
}