/* ふるふる 3D — ゲーム画面と解説ページの共通スタイル */
:root{--g3d-ui:'Zen Kaku Gothic New','Zen Maru Gothic','Hiragino Sans','Noto Sans JP',sans-serif;--g3d-title:var(--g3d-ui);--paper:#f6f1e5;--paper-2:#fbf8f1;--ink:#2f2a24;--ink-soft:#6c6257;--line:#e2d8c6;--brand:#c8702f}
*{box-sizing:border-box}
html,body.g3d-page{margin:0;background:#07090c}
body.g3d-page{color:var(--ink);font:500 15px/1.75 var(--g3d-ui);-webkit-text-size-adjust:100%}
button,input,select{font:inherit}
[hidden]{display:none!important}

/* ===== ゲーム画面 ===== */
.g3d{position:relative;width:100%;height:100vh;height:100svh;min-height:320px;overflow:hidden;background:#000;color:#f4f1ea;isolation:isolate;font-family:var(--g3d-ui);user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent;contain:layout paint}
.g3d:fullscreen{height:100vh}
.g3d-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;outline:none;touch-action:none;cursor:default}
.g3d.is-playing .g3d-canvas{cursor:crosshair}
.g3d-shade{position:absolute;inset:0;pointer-events:none;z-index:1;opacity:0;transition:opacity .6s ease;background:radial-gradient(120% 90% at 50% 45%,rgba(0,0,0,0) 30%,rgba(0,0,0,.55) 100%),linear-gradient(180deg,rgba(0,0,0,.35),rgba(0,0,0,0) 30%,rgba(0,0,0,0) 60%,rgba(0,0,0,.55))}
.g3d[data-state="title"] .g3d-shade,.g3d[data-state="paused"] .g3d-shade,.g3d[data-state="result"] .g3d-shade,.g3d[data-state="loading"] .g3d-shade{opacity:1}

/* 上部バー */
/* 上のバー（ふるふる・音・全画面）は、タイトル・一時停止・結果の画面や、作品ごとの重ね画面（z-index 25〜36）より上に置く。読み込み中も押せる。エラー画面（50）より下 */
.g3d-bar{position:absolute;top:0;left:0;right:0;z-index:47;display:flex;align-items:center;gap:14px;padding:calc(10px + env(safe-area-inset-top)) calc(14px + env(safe-area-inset-right)) 10px calc(14px + env(safe-area-inset-left));background:linear-gradient(180deg,rgba(4,6,9,.62),rgba(4,6,9,0));pointer-events:none}
.g3d-bar>*{pointer-events:auto}
.g3d-bar__home{display:flex;align-items:center;gap:8px;min-height:44px;min-width:44px;color:#f4f1ea;text-decoration:none;font-weight:800;font-size:14px;opacity:.9}
.g3d-bar__home img{width:30px;height:30px;border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,.35)}
.g3d-bar__title{flex:1;min-width:0;font-weight:700;font-size:14px;letter-spacing:.06em;opacity:.78;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.g3d-bar__tools{display:flex;gap:6px}
.g3d-ibtn{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:rgba(18,22,28,.45);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#f4f1ea;cursor:pointer;padding:0;transition:background .2s,transform .1s}
.g3d-ibtn:hover{background:rgba(40,46,56,.7)}
.g3d-ibtn:active{transform:scale(.94)}
.g3d-ibtn:disabled{opacity:.35;cursor:default}
.g3d-ibtn svg{width:20px;height:20px;fill:currentColor}
.g3d-ibtn svg .s,.g3d-btn svg .s{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.g3d.is-playing .g3d-bar{background:none}
.g3d.is-playing .g3d-bar__home,.g3d.is-playing .g3d-bar__title{opacity:.35}
.g3d.is-playing .g3d-ibtn{background:rgba(10,12,16,.28);border-color:rgba(255,255,255,.1)}

/* HUD */
.g3d-hud{position:absolute;inset:0;z-index:10;pointer-events:none;opacity:0;transition:opacity .4s}
.g3d[data-state="playing"] .g3d-hud,.g3d[data-state="paused"] .g3d-hud{opacity:1}
.g3d-hud__tl{position:absolute;top:calc(64px + env(safe-area-inset-top));left:calc(16px + env(safe-area-inset-left));display:flex;flex-direction:column;gap:10px;max-width:min(62vw,420px)}
.g3d-hud__tr{position:absolute;top:calc(64px + env(safe-area-inset-top));right:calc(16px + env(safe-area-inset-right));display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.g3d-stats{display:flex;gap:8px;flex-wrap:wrap}
.g3d-stat{display:flex;flex-direction:column;padding:7px 14px 8px;border-radius:12px;background:rgba(10,13,18,.5);border:1px solid rgba(255,255,255,.1);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);min-width:68px}
.g3d-stat span{font-size:10.5px;letter-spacing:.12em;opacity:.7;font-weight:700}
.g3d-stat b{font-size:20px;line-height:1.2;font-weight:900;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.g3d-objective{font-size:13.5px;font-weight:700;padding:8px 14px;border-left:3px solid var(--accent);background:linear-gradient(90deg,rgba(10,13,18,.55),rgba(10,13,18,0));text-shadow:0 1px 3px rgba(0,0,0,.6)}
.g3d-objective.is-new{animation:g3d-slide .6s ease both}
@keyframes g3d-slide{from{opacity:0;transform:translateX(-12px)}to{opacity:1;transform:none}}
.g3d-crosshair{position:absolute;left:50%;top:50%;width:6px;height:6px;margin:-3px 0 0 -3px;border-radius:50%;background:rgba(255,255,255,.85);box-shadow:0 0 0 1.5px rgba(0,0,0,.35),0 0 8px rgba(0,0,0,.4);transition:transform .15s}
.g3d-crosshair[data-style="ring"]{width:22px;height:22px;margin:-11px 0 0 -11px;background:none;border:2px solid rgba(255,255,255,.85)}
.g3d-prompt{position:absolute;left:50%;top:58%;transform:translateX(-50%);display:flex;align-items:center;gap:10px;padding:9px 18px;border-radius:999px;background:rgba(10,13,18,.62);border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);font-weight:700;font-size:14px;white-space:nowrap;animation:g3d-pop .2s ease}
.g3d-prompt kbd{display:inline-grid;place-items:center;min-width:26px;height:26px;padding:0 7px;border-radius:7px;background:#f4f1ea;color:#15181c;font:800 13px/1 var(--g3d-ui);box-shadow:0 2px 0 rgba(0,0,0,.4)}
@keyframes g3d-pop{from{opacity:0;transform:translate(-50%,6px)}to{opacity:1;transform:translate(-50%,0)}}
.g3d-subtitle{position:absolute;left:50%;bottom:calc(15% + env(safe-area-inset-bottom));transform:translateX(-50%);width:max-content;max-width:min(88vw,760px);text-align:center;font-size:clamp(14px,2.1vw,19px);font-weight:700;line-height:1.6;padding:8px 18px;border-radius:10px;background:rgba(0,0,0,.45);text-shadow:0 1px 3px #000}
.g3d-subtitle b{color:var(--accent);margin-right:.6em}
.g3d-banner{position:absolute;left:0;right:0;top:34%;text-align:center;text-shadow:0 2px 18px rgba(0,0,0,.7)}
.g3d-banner.is-in{animation:g3d-banner 2.6s ease both}
.g3d-banner__big{font-family:var(--g3d-title);font-size:clamp(34px,7vw,72px);font-weight:900;letter-spacing:.14em}
.g3d-banner__small{font-size:clamp(13px,1.8vw,17px);font-weight:700;letter-spacing:.3em;opacity:.85;margin-top:6px}
@keyframes g3d-banner{0%{opacity:0;letter-spacing:.3em;filter:blur(6px)}18%{opacity:1;letter-spacing:.14em;filter:none}78%{opacity:1}100%{opacity:0}}
.g3d-toast{position:absolute;top:calc(70px + env(safe-area-inset-top));left:50%;transform:translateX(-50%);padding:8px 18px;border-radius:999px;background:rgba(10,13,18,.72);border:1px solid rgba(255,255,255,.14);font-weight:700;font-size:13.5px;white-space:nowrap}
.g3d-toast.is-in{animation:g3d-toast .3s ease both}
@keyframes g3d-toast{from{opacity:0;transform:translate(-50%,-8px)}to{opacity:1;transform:translate(-50%,0)}}
.g3d-meters{position:absolute;left:calc(16px + env(safe-area-inset-left));bottom:calc(18px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:8px;width:min(46vw,260px)}
.g3d-meter span{display:block;font-size:11px;font-weight:700;letter-spacing:.1em;opacity:.8;margin-bottom:3px}
.g3d-meter div{height:8px;border-radius:99px;background:rgba(255,255,255,.14);overflow:hidden;box-shadow:inset 0 0 0 1px rgba(0,0,0,.25)}
.g3d-meter i{display:block;height:100%;width:0;background:var(--accent);border-radius:99px;transition:width .12s linear}
.g3d-meter.is-warn i{background:#e0533d;animation:g3d-blink .6s steps(2) infinite}
@keyframes g3d-blink{50%{opacity:.45}}
.g3d-fps{position:absolute;right:10px;bottom:8px;font:600 11px/1 ui-monospace,monospace;opacity:.6;background:rgba(0,0,0,.4);padding:4px 7px;border-radius:5px}
.g3d-lockhint{position:absolute;left:50%;top:50%;transform:translate(-50%,40px);font-size:12.5px;font-weight:700;opacity:.75;background:rgba(0,0,0,.5);padding:5px 12px;border-radius:99px;pointer-events:none;width:max-content;max-width:min(86vw,520px);text-align:center}

/* 画面（タイトル・一時停止・設定・結果） */
.g3d-screen{position:absolute;inset:0;z-index:30;display:grid;place-items:center;padding:calc(70px + env(safe-area-inset-top)) 18px calc(24px + env(safe-area-inset-bottom));overflow:auto;animation:g3d-fade .35s ease both}
/* 一時停止の画面は、作品のゲーム内の画面（z-index 44 以下）より上に出す（ゲーム内の画面を開いたまま一時停止すると、再開ボタンが隠れて押せなかった。2026-10-05）。上のバー（47）より下 */
.g3d[data-state="paused"] .g3d-screen{z-index:46}
@keyframes g3d-fade{from{opacity:0}to{opacity:1}}
.g3d-screen[data-screen="pause"],.g3d-screen[data-screen="settings"],.g3d-screen[data-screen="help"],.g3d-screen[data-screen="result"]{background:rgba(5,7,10,.45);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.g3d-title{text-align:center;max-width:760px;width:100%}
.g3d-title__kicker{margin:0 0 10px;font-size:12.5px;letter-spacing:.42em;font-weight:700;opacity:.8;text-transform:uppercase}
.g3d-title__name{margin:0;font-family:var(--g3d-title);font-weight:900;font-size:clamp(38px,8.4vw,86px);line-height:1.08;letter-spacing:.06em;text-shadow:0 4px 30px rgba(0,0,0,.6),0 1px 2px rgba(0,0,0,.5)}
.g3d-title__name small{display:block;font-size:.34em;letter-spacing:.28em;font-weight:700;margin-top:.5em;opacity:.85}
.g3d-title__sub{margin:18px auto 0;max-width:34em;white-space:pre-line;text-wrap:balance;font-size:clamp(13.5px,1.9vw,16px);line-height:1.9;opacity:.9;text-shadow:0 1px 8px rgba(0,0,0,.7)}
.g3d-title__extra:not(:empty){margin-top:22px}
.g3d-title__hint{margin:18px 0 0;font-size:12px;opacity:.65;letter-spacing:.05em}
.g3d-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:26px}
.g3d-actions--col{flex-direction:column;align-items:stretch}
.g3d-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:10px 22px;border-radius:14px;border:1px solid rgba(255,255,255,.2);background:rgba(20,24,31,.55);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#f4f1ea;font-weight:800;font-size:15px;letter-spacing:.04em;cursor:pointer;text-decoration:none;transition:background .2s,transform .1s,box-shadow .2s}
.g3d-btn:hover{background:rgba(44,50,62,.72)}
.g3d-btn:active{transform:scale(.97)}
.g3d-btn:focus-visible,.g3d-ibtn:focus-visible,.g3d-seg button:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.g3d-btn--primary{background:var(--accent);border-color:transparent;color:#14110c;min-width:200px;box-shadow:0 8px 30px -8px var(--accent)}
.g3d-btn--primary:hover{background:var(--accent);filter:brightness(1.08)}
.g3d-btn--ghost{background:transparent}
.g3d-btn svg{width:18px;height:18px}
.g3d-panel{width:min(440px,100%);padding:26px 24px;border-radius:20px;background:rgba(14,17,22,.72);border:1px solid rgba(255,255,255,.12);box-shadow:0 30px 80px -20px rgba(0,0,0,.7)}
.g3d-panel--wide{width:min(720px,100%)}
.g3d-panel__title{margin:0 0 6px;text-align:center;font-size:20px;font-weight:900;letter-spacing:.12em}
.g3d-result{text-align:center}
.g3d-result__kicker{margin:0;font-size:12px;letter-spacing:.35em;opacity:.75;font-weight:700}
.g3d-result__title{margin:6px 0 0;font-family:var(--g3d-title);font-size:clamp(24px,4.6vw,34px);font-weight:900;letter-spacing:.08em}
.g3d-result__big{margin:12px 0 4px;font-size:clamp(40px,8vw,64px);font-weight:900;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.1}
.g3d-result__rows{margin:16px 0 0;display:grid;gap:6px}
.g3d-result__rows div{display:flex;justify-content:space-between;gap:16px;padding:8px 12px;border-radius:10px;background:rgba(255,255,255,.05)}
.g3d-result__rows dt{opacity:.75;font-size:13px;white-space:nowrap}  /* 見出しが1文字ずつ縦に折れないように（2026-10-13 deck の要望） */.g3d-result__rows dd{margin:0;font-weight:800;font-variant-numeric:tabular-nums}
.g3d-result__msg{margin:14px 0 0;opacity:.9;font-size:14px}
.g3d-form{display:grid;gap:16px;margin-top:14px}
.g3d-field{display:grid;gap:8px}
.g3d-field--row{grid-template-columns:1fr auto;align-items:center}
.g3d-field__label{font-size:13px;font-weight:700;opacity:.85}
.g3d-field__note{margin:0;font-size:12px;opacity:.6}
.g3d-field input[type=range]{width:100%;accent-color:var(--accent);height:28px}
.g3d-field input[type=checkbox]{width:22px;height:22px;accent-color:var(--accent)}
.g3d-seg{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;padding:4px;border-radius:12px;background:rgba(255,255,255,.07)}
.g3d-seg button{min-height:38px;border-radius:9px;border:0;background:transparent;color:#f4f1ea;font-weight:800;cursor:pointer}
.g3d-seg button[aria-checked="true"]{background:var(--accent);color:#14110c}
.g3d-help{font-size:14px;line-height:1.9;opacity:.92}
.g3d-help p{margin:.4em 0}
.g3d-controls{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.g3d-controls h3{margin:0 0 6px;font-size:13px;letter-spacing:.14em;opacity:.8}
.g3d-controls dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:5px 12px;font-size:13px}
.g3d-controls dt{font-weight:800;color:var(--accent)}
.g3d-controls dd{margin:0;opacity:.9}

/* 読み込み・エラー */
.g3d-loading{position:absolute;inset:0;z-index:40;display:grid;place-content:center;gap:18px;text-align:center;background:radial-gradient(80% 60% at 50% 50%,#12161c,#040506)}
.g3d-loading[hidden]{display:none}
.g3d[data-state]:not([data-state="loading"]) .g3d-loading{display:none}
.g3d-loading__title{font-family:var(--g3d-title);font-size:clamp(24px,5vw,40px);font-weight:900;letter-spacing:.12em}
.g3d-loading__bar{width:min(280px,70vw);height:4px;border-radius:9px;background:rgba(255,255,255,.12);overflow:hidden;margin:0 auto}
.g3d-loading__bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .3s ease}
.g3d-loading__text{font-size:12.5px;opacity:.65;letter-spacing:.08em}
.g3d-error{position:absolute;inset:0;z-index:50;display:grid;place-content:center;justify-items:center;gap:12px;text-align:center;padding:24px;background:#0b0d10}
.g3d-error h2{margin:0;font-size:20px}

/* タッチ操作 */
.g3d-touch{position:absolute;inset:0;z-index:12;pointer-events:none}
.g3d-joyzone{position:absolute;left:0;bottom:0;width:45%;height:62%;pointer-events:auto;touch-action:none}
.g3d-lookzone{position:absolute;right:0;top:64px;width:55%;bottom:0;pointer-events:auto;touch-action:none}
.g3d-lookzone.is-full{width:100%}
.g3d-joy{position:absolute;left:max(24%,calc(70px + env(safe-area-inset-left)));top:62%;width:112px;height:112px;margin:-56px 0 0 -56px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.07),rgba(255,255,255,.14));border:1.5px solid rgba(255,255,255,.28);opacity:.55;transition:opacity .2s}
.g3d-joy.is-active{opacity:1}
.g3d-joy__knob{position:absolute;left:50%;top:50%;width:50px;height:50px;margin:-25px 0 0 -25px;border-radius:50%;background:rgba(255,255,255,.85);box-shadow:0 4px 14px rgba(0,0,0,.4)}
.g3d-tbuttons{position:absolute;right:calc(16px + env(safe-area-inset-right));bottom:calc(20px + env(safe-area-inset-bottom));display:flex;flex-wrap:wrap-reverse;justify-content:flex-end;gap:12px;max-width:190px;pointer-events:none}
.g3d-tbtn{pointer-events:auto;touch-action:none;width:66px;height:66px;border-radius:50%;border:1.5px solid rgba(255,255,255,.3);background:rgba(12,15,20,.5);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);color:#f4f1ea;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;padding:0;font-weight:800;font-size:11px;line-height:1.1}
.g3d-tbtn.is-lg{width:82px;height:82px}
.g3d-tbtn.is-sm{width:54px;height:54px;font-size:10px}
.g3d-tbtn__icon{font-size:20px;line-height:1}
.g3d-tbtn.is-down{background:rgba(255,255,255,.3);transform:scale(.95)}
.g3d-tbtn.is-active{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 45%,transparent),0 0 24px var(--accent);color:var(--accent)}

@media (max-width:640px){
  .g3d-bar__home span{display:none}
  .g3d-bar{gap:10px}
  .g3d-ibtn{width:44px;height:44px}
  .g3d-stat{padding:5px 10px 6px;min-width:58px}.g3d-stat b{font-size:17px}
  .g3d-hud__tl{top:calc(58px + env(safe-area-inset-top));left:10px}
  .g3d-panel{padding:22px 18px}
  .g3d-controls{grid-template-columns:1fr}
  .g3d-btn--primary{min-width:170px}
}
@media (max-height:480px) and (orientation:landscape){
  .g3d-bar{padding-top:4px;padding-bottom:4px}.g3d-ibtn{width:44px;height:44px}
  .g3d-hud__tl,.g3d-hud__tr{top:48px}
  .g3d-title__name{font-size:clamp(28px,7vw,48px)}.g3d-title__sub{display:none}
  .g3d-actions{margin-top:14px}
  .g3d-screen{padding-top:52px}
}
/* 背の低い画面（スマホ横・小さな窓）で、一時停止と結果の画面のボタンが下で切れないように詰める（2026-10-05 チェック担当の指摘：スマホ横の一時停止で「タイトルへ戻る」が切れ、結果の行が多いと 1280×720 でもボタンが見えなかった） */
@media (max-height:560px){
  .g3d-screen .g3d-panel{padding:16px 18px}
  .g3d-screen .g3d-panel__title{margin-bottom:2px;font-size:18px}
  .g3d-screen .g3d-actions{margin-top:12px}
  .g3d-actions--col{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .g3d-actions--col .g3d-btn{min-height:40px;padding:8px 14px}
  .g3d-actions--col .g3d-btn--primary{grid-column:1/-1}
  .g3d-result__big{margin:6px 0 2px;font-size:clamp(30px,6vw,46px)}
  .g3d-result__rows{margin-top:10px;gap:4px}
  .g3d-result__rows div{padding:5px 10px}
  .g3d-result__msg{margin-top:8px;font-size:13px}
}
@media (max-height:560px) and (min-width:560px){.g3d-result .g3d-result__rows{grid-template-columns:1fr 1fr;column-gap:8px}}
/* 結果の画面のボタンは、内容が画面より長い時（作品が写真やグラフを足した結果など）は画面の下に貼り付く。収まる時はふつうの位置（2026-10-06 チェック担当の提案。どの高さの画面でも）。
   Chrome の sticky は親（.g3d-screen）の下の余白 24px の内側で止まるので、その分だけ下へずらして、余白に内容が透けないようにする */
.g3d-screen .g3d-result .g3d-actions{position:sticky;bottom:calc(-24px - env(safe-area-inset-bottom));z-index:1;margin:22px -24px -26px;padding:12px 24px 22px;background:linear-gradient(to top,rgba(14,17,22,.96) 72%,rgba(14,17,22,0));border-radius:0 0 20px 20px}
@media (max-width:640px){.g3d-screen .g3d-result .g3d-actions{margin:18px -18px -22px;padding:10px 18px 18px}}
/* それでも収まらないとき（スマホ横で行が多い結果など）は、ボタンを画面の下に貼り付けて、いつでも押せるようにする */
@media (max-height:560px){.g3d-screen .g3d-result .g3d-actions{position:sticky;bottom:calc(-24px - env(safe-area-inset-bottom));margin:10px -18px -16px;padding:10px 18px 14px;background:linear-gradient(to top,rgba(14,17,22,.97) 75%,rgba(14,17,22,0));border-radius:0 0 20px 20px}}
/* タイトルの内容が画面より長い時（背の低い PC の画面で、面の一覧や記録を足した作品など）だけ、ボタンの列を画面の下に貼り付ける（ui.js が .g3d-screen--overflow を付ける。2026-10-06）。
   印の付け外しで大きさを変えない（変えると測り直しがくり返す）ので、下の暗いぼかしは ::before で敷く */
.g3d-screen--overflow{overflow-x:hidden}
.g3d-screen--overflow .g3d-title > .g3d-actions{position:sticky;bottom:0;z-index:2}
.g3d-screen--overflow .g3d-title > .g3d-actions::before{content:"";position:absolute;left:-50vw;right:-50vw;top:-20px;bottom:calc(-30px - env(safe-area-inset-bottom));z-index:-1;background:linear-gradient(to top,rgba(7,9,12,.92) 60%,rgba(7,9,12,0));pointer-events:none}
/* 設定・遊び方の「戻る」も、内容が画面より長い時は画面の下に貼り付く（2026-10-06 チェック担当 qa-b：スマホ横や PC 1280×720 で縦にあふれ、画面の中をスクロールしないと「戻る」が出なかった） */
.g3d-screen[data-screen="settings"] .g3d-actions,.g3d-screen[data-screen="help"] .g3d-actions{position:sticky;bottom:calc(-24px - env(safe-area-inset-bottom));z-index:1;margin:22px -24px -26px;padding:12px 24px 22px;background:linear-gradient(to top,rgba(14,17,22,.96) 72%,rgba(14,17,22,0));border-radius:0 0 20px 20px}
@media (max-width:640px){.g3d-screen[data-screen="settings"] .g3d-actions,.g3d-screen[data-screen="help"] .g3d-actions{margin:18px -18px -22px;padding:10px 18px 18px}}
@media (max-height:560px){.g3d-screen[data-screen="settings"] .g3d-actions,.g3d-screen[data-screen="help"] .g3d-actions{margin:10px -18px -16px;padding:10px 18px 14px;background:linear-gradient(to top,rgba(14,17,22,.97) 75%,rgba(14,17,22,0))}}
@media (max-height:420px){.g3d-result__kicker{display:none}.g3d-result__title{font-size:20px;margin-top:0}.g3d-result__big{font-size:28px;margin:2px 0 0}.g3d-result__rows dt,.g3d-result__rows dd{font-size:12px}.g3d-result__msg{display:none}}
/* 結果の行が6行以上なら、ふつうの高さの画面でも2列にする */
@media (min-width:640px){.g3d-result:has(.g3d-result__rows > div:nth-child(6)){width:min(640px,100%)}.g3d-result__rows:has(> div:nth-child(6)){grid-template-columns:1fr 1fr;column-gap:8px}}
@media (pointer:fine){.g3d-touch{display:none}}
/* スマホ：表示の層に置いた押せる部品（地図・メモのボタンなど）が操作の層（12）の下で押せなかった。表示の層は押せない設定のまま、操作の層より上へ（2026-10-06） */
@media (pointer:coarse){.g3d-hud{z-index:13}}
@media (pointer:coarse){.g3d-meters{left:50%;transform:translateX(-50%);bottom:calc(10px + env(safe-area-inset-bottom));width:min(44vw,220px)}}
@media (prefers-reduced-motion:reduce){.g3d-banner.is-in,.g3d-objective.is-new,.g3d-screen{animation:none}}

/* ===== 解説ページ（ゲームの下） ===== */
.g3d-page main{background:var(--paper)}
.g3d-about{max-width:880px;margin:0 auto;padding:56px 22px 40px}
.g3d-about__kicker{margin:0;color:var(--brand);font-weight:800;letter-spacing:.2em;font-size:12.5px}
.g3d-about h1{margin:6px 0 10px;font-size:clamp(26px,4.6vw,38px);line-height:1.3;letter-spacing:.04em}
.g3d-about .lead{font-size:16px;color:var(--ink-soft);margin:0 0 26px}
.g3d-about h2{font-size:20px;margin:36px 0 12px;padding-left:12px;border-left:4px solid var(--brand)}
.g3d-about p{margin:.5em 0}
.g3d-about ul,.g3d-about ol{padding-left:1.3em}
.g3d-about li{margin:.3em 0}
.g3d-keys{width:100%;border-collapse:collapse;font-size:14px;background:var(--paper-2);border-radius:12px;overflow:hidden}
.g3d-keys th,.g3d-keys td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.g3d-keys th{background:#efe6d6;font-weight:800;white-space:nowrap}
.g3d-keys tr:last-child td{border-bottom:0}
.g3d-play{display:inline-flex;align-items:center;gap:8px;margin:6px 0 0;padding:10px 20px;border-radius:12px;background:var(--brand);color:#fff;font-weight:800;text-decoration:none}
.g3d-more{max-width:1100px;margin:0 auto;padding:10px 22px 50px}
.g3d-more h2{font-size:18px;margin:0 0 14px;text-align:center;letter-spacing:.1em}
.g3d-more__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.g3d-card{display:block;border-radius:14px;overflow:hidden;background:#fff;border:1px solid var(--line);color:var(--ink);text-decoration:none;box-shadow:0 6px 18px -10px rgba(60,40,20,.35);transition:transform .2s,box-shadow .2s}
.g3d-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px -14px rgba(60,40,20,.45)}
.g3d-card img{display:block;width:100%;height:auto;aspect-ratio:1200/630;object-fit:cover;background:#ddd}
.g3d-card span{display:block;padding:9px 12px 11px;font-weight:800;font-size:14px}
.g3d-card small{display:block;font-weight:600;color:var(--ink-soft);font-size:12px;margin-top:2px}
.g3d-foot{background:#efe6d6;color:var(--ink-soft);font-size:13px;text-align:center;padding:22px 16px calc(22px + env(safe-area-inset-bottom))}
.g3d-foot a{color:var(--ink);margin:0 10px;font-weight:700}

/* ---- 入口（説明を先に見せ、「プレイする」で3Dを読み込む。gate.js） ---- */
.g3d-gated #game-root{display:none}
.g3d-gated .g3d-about{padding-top:34px}
.g3d-gate{margin:4px 0 30px}
.g3d-gate__scene{position:relative;display:block;width:100%;padding:0;border:0;border-radius:18px;overflow:hidden;background:#111;cursor:pointer;box-shadow:0 18px 40px -22px rgba(40,25,10,.6);font:inherit}
.g3d-gate__scene img{display:block;width:100%;height:auto;aspect-ratio:1200/630;object-fit:cover;transition:transform .5s ease,filter .3s}
.g3d-gate__scene::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(0,0,0,0) 35%,rgba(0,0,0,.45) 100%);pointer-events:none}
.g3d-gate__scene:hover img,.g3d-gate__scene:focus-visible img{transform:scale(1.025);filter:brightness(1.06)}
.g3d-gate__btn{position:absolute;left:50%;top:50%;z-index:1;transform:translate(-50%,-50%);display:inline-flex;align-items:center;gap:12px;padding:16px 34px 16px 28px;border-radius:999px;background:var(--brand);color:#fff;font-weight:900;font-size:clamp(17px,2.6vw,22px);letter-spacing:.12em;box-shadow:0 10px 30px rgba(0,0,0,.45);transition:transform .2s}
.g3d-gate__scene:hover .g3d-gate__btn{transform:translate(-50%,-50%) scale(1.05)}
.g3d-gate__scene:focus-visible{outline:3px solid var(--brand);outline-offset:4px}
.g3d-gate__tri{width:0;height:0;border-style:solid;border-width:9px 0 9px 15px;border-color:transparent transparent transparent #fff}
.g3d-gate__note{margin:10px 2px 0 !important;font-size:13px;color:var(--ink-soft)}
.g3d-gate__err{color:#fff;padding:40px 24px;text-align:center}
.g3d-crumb{display:flex;align-items:center;gap:8px;margin:0 0 18px;font-size:13px;color:var(--ink-soft)}
.g3d-crumb a{color:var(--ink-soft);text-decoration:none;font-weight:700}
.g3d-crumb a:hover{color:var(--brand);text-decoration:underline}
@media (max-width:600px){.g3d-gated .g3d-about{padding-top:20px}.g3d-gate__btn{padding:13px 26px 13px 22px}.g3d-gate{margin-bottom:22px}}
/* スマホ横など背の低い画面：入口の「プレイする」が1画面目に収まるように、写真の高さを抑える（gate.js は説明文より先に写真を置く。2026-10-06 チェック担当 qa-b） */
@media (max-height:500px) and (orientation:landscape){.g3d-gated .g3d-about{padding-top:12px}.g3d-crumb{margin-bottom:8px}.g3d-gate{margin:2px 0 22px}.g3d-gate__scene img{aspect-ratio:auto;height:56vh}}
.g3d-field__sub{display:block;margin-top:2px;font-size:11.5px;font-weight:500;opacity:.75;line-height:1.5}
/* キー操作のヒント（設定でオン・パソコンのみ） */
.g3d-keyhints{position:absolute;right:calc(14px + env(safe-area-inset-right));bottom:30px;display:flex;flex-direction:column;align-items:flex-end;gap:4px;max-width:min(40vw,300px);opacity:.78}
.g3d-kh{display:flex;align-items:center;gap:7px;padding:3px 8px 3px 4px;border-radius:7px;background:rgba(8,10,14,.5);font:600 12px/1.3 var(--g3d-ui);color:#e9eef3;text-shadow:0 1px 2px rgba(0,0,0,.6)}
.g3d-kh kbd{flex-shrink:0;min-width:20px;padding:2px 6px;border-radius:5px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);font:700 11.5px/1.2 var(--g3d-ui);text-align:center;color:#fff;white-space:nowrap}
.g3d[data-touch="1"] .g3d-field--pc{display:none}