:root{
  color-scheme:light;
  --deep:#06183f; --blue:#0b4fb3; --mark:#8fb7ff; --ink:#061225; --heading:#0f2350;
  --paper:#fff; --pale:#f2f6fc; --soft:#eaf1fb; --line:#cbd8eb; --muted:#53657d; --gold:#f2c14e;
  --sans:"Zen Kaku Gothic New","Hiragino Sans","Yu Gothic",Meiryo,sans-serif;
  --mono:ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--pale);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.8;letter-spacing:.02em;overflow-x:hidden}
h1,h2,h3,p,ul,ol,dl,figure{margin:0}
h1,h2,h3{color:var(--heading);line-height:1.45;text-wrap:balance}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
[tabindex="-1"]:focus{outline:none}

/* ワン画面：スクロールなしで収まる並び（画面が極端に低いときだけ縦に伸びる） */
.app{max-width:1180px;margin:0 auto;padding:10px clamp(12px,2vw,24px);min-height:100vh;min-height:100dvh;display:grid;grid-template-rows:auto auto 1fr auto;gap:10px}
.bar{grid-row:1;position:relative;display:flex;align-items:baseline;gap:2px 14px;flex-wrap:wrap}
.bar h1{font-size:clamp(18px,2.2vw,24px);font-weight:700;letter-spacing:.06em}
.tag{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;color:var(--blue);font-weight:600}
.strip{grid-row:2;display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:8px}
.stage{grid-row:3;display:grid;align-items:center;justify-items:center;min-height:0}
#stage{width:100%;display:grid;justify-items:center}
.foot{grid-row:4;font-size:12px;line-height:1.7;color:var(--muted);text-align:center}
.foot a{color:var(--blue)}
.legal{margin-left:auto;font-size:12.5px}
.legal summary{cursor:pointer;color:var(--blue);padding:2px 4px}
.legal ul{position:absolute;right:0;top:calc(100% + 6px);z-index:30;width:min(560px,92vw);margin:0;padding:10px 14px 10px 30px;display:grid;gap:4px;background:var(--paper);border:1px solid var(--line);border-radius:8px;box-shadow:0 8px 24px rgba(6,24,63,.18);font-size:12.5px;line-height:1.7;text-align:left}
body[data-mode="intro"] .strip,body[data-mode="result"] .strip{display:none}

/* 途中経過のコマ */
.pn{display:grid;gap:3px;background:none;border:0;padding:0;text-align:center;min-width:0}
.pn .im{position:relative;display:block;border:2px solid var(--line);border-radius:6px;overflow:hidden;background:var(--deep);aspect-ratio:16/9;line-height:0}
.pn canvas{width:100%;height:100%;display:block}
.pn .num{position:absolute;left:5px;top:2px;font:600 11px/1.4 var(--mono);color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.8);opacity:.9}
.pn .cap{font-size:11.5px;line-height:1.35;color:var(--muted)}
.pn.now .im{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,79,179,.22)}
.pn.now .cap{color:var(--blue);font-weight:700}
.pn.empty .im{background:repeating-linear-gradient(135deg,#0d2252 0 8px,#0a1c46 8px 16px);border-style:dashed;border-color:#9fb2d4}
.pn.empty canvas{visibility:hidden}
.pn.empty .num{left:50%;top:50%;transform:translate(-50%,-50%);font-size:20px;opacity:.4}
.pn:not([disabled]){cursor:pointer}
.pn[disabled]{cursor:default}
@keyframes ppop{0%{transform:scale(.86);filter:brightness(1.9)}100%{transform:none;filter:none}}
.pn.pop .im{animation:ppop .6s ease-out}

/* 質問のカード */
.card{width:min(100%,1000px);background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:clamp(14px,2vw,22px);display:grid;gap:12px}
.prog{display:none;gap:6px}
.prog .lbl{font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--blue);font-weight:600}
.steps{list-style:none;padding:0;display:grid;grid-template-columns:repeat(8,1fr);gap:4px;margin:0}
.steps li{height:5px;border-radius:99px;background:var(--soft)}
.steps li.done{background:var(--mark)}
.steps li.now{background:var(--blue)}
.q{display:grid;gap:4px}
.q h2{font-size:clamp(18px,2vw,23px)}
.q .sub{color:var(--muted);font-size:14px;line-height:1.7}
.opts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.opt{display:flex;gap:10px;align-items:flex-start;text-align:left;width:100%;background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:10px 12px;min-height:58px;transition:border-color .15s,background .15s}
.opt:hover{border-color:var(--blue)}
.opt[aria-pressed="true"]{border-color:var(--blue);background:var(--soft);box-shadow:inset 3px 0 0 var(--blue)}
.opt .mk{flex:none;width:17px;height:17px;border-radius:3px;border:1.5px solid var(--muted);margin-top:4px;display:grid;place-items:center;background:var(--paper)}
.opt[aria-pressed="true"] .mk{background:var(--blue);border-color:var(--blue)}
.opt[aria-pressed="true"] .mk::after{content:"";width:5px;height:9px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg) translate(-1px,-1px)}
.opt b{display:block;font-weight:700;color:var(--heading);line-height:1.55;font-size:15px}
.opt small{display:block;font-size:12.5px;color:var(--muted);line-height:1.55}
.opt.tb{align-items:center}
.opt.tb .th{display:block;width:84px;flex:none;height:auto;image-rendering:pixelated;border-radius:4px;background:#cfe4fb}
.opt .row{display:flex;gap:8px;align-items:flex-start;min-width:0}
.count{font-size:13px;color:var(--muted)}

.nav{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:12px}
.nav .grp{display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;border-radius:4px;padding:8px 20px;border:1px solid var(--deep);background:var(--paper);font-weight:700;letter-spacing:.06em;color:var(--deep)}
.btn.primary{background:var(--deep);color:#fff}
.btn.ghost{border-color:var(--line);font-weight:500;color:var(--muted)}
.btn:hover{background:var(--soft)}
.btn.primary:hover{background:var(--heading)}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.btn.big{min-height:52px;padding-inline:40px}
.note{font-size:13px;color:var(--muted);line-height:1.8}

/* 入口 */
.intro{width:min(100%,760px);display:grid;gap:14px;justify-items:center;text-align:center}
.itxt{display:grid;gap:10px;justify-items:center}
.itxt h2{font-size:clamp(20px,2.4vw,27px)}
.itxt .sub{color:var(--muted);font-size:14.5px;max-width:40em}

/* 絵の枠 */
.pimg{border:4px solid var(--deep);border-radius:8px;overflow:hidden;line-height:0;background:var(--deep);box-shadow:0 12px 32px rgba(6,24,63,.26)}
.pimg canvas{width:100%;height:auto;display:block;image-rendering:pixelated}
.intro .pimg{width:min(100%,max(260px,calc((100vh - 410px)*16/9)),680px);width:min(100%,max(260px,calc((100dvh - 410px)*16/9)),680px)}

/* 完成の画面（ポスター） */
.result{width:100%;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:clamp(14px,2.4vw,30px);align-items:center}
.poster{display:grid;gap:8px;justify-items:center}
.poster figcaption{justify-self:stretch}
.poster .s1{font-size:clamp(19px,2.2vw,26px);font-weight:700;color:var(--deep)}
.poster .ssub{font-size:13px;color:var(--muted)}
.result .pimg{width:min(100%,max(260px,calc((100vh - 225px)*16/9)));width:min(100%,max(260px,calc((100dvh - 225px)*16/9)))}
.side{display:grid;gap:10px}
.mvv{background:var(--paper);border:1px solid var(--line);border-top:5px solid var(--deep);border-radius:10px;padding:11px 14px;display:grid;gap:6px}
.mvv h3{font-size:16px}
.mvv h3 small{font-size:12px;font-weight:500;color:var(--muted);margin-left:10px;letter-spacing:.04em}
.mvv dl{display:grid;gap:6px}
.mvv dt{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:.06em}
.mvv dd{margin:0;font-size:14px;line-height:1.6}
.meta{display:flex;flex-wrap:wrap;gap:6px}
.meta span{font-size:12.5px;line-height:1.6;padding:2px 9px;border:1px solid var(--line);border-radius:4px;background:var(--pale)}
.acts{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.acts .btn{padding:6px 12px;line-height:1.4;text-align:center}
.btn small{display:block;font-size:11.5px;font-weight:500;letter-spacing:.04em;opacity:.85}
.acts2{display:flex;gap:8px;flex-wrap:wrap}
.acts2 .btn{min-height:38px;padding:4px 14px;font-size:14px}
.msg{font-size:13px;color:var(--muted);min-height:0}
.ta{width:100%;height:110px;font:12px/1.5 var(--sans);border:1px solid var(--line);border-radius:6px;padding:6px;color:var(--ink);background:var(--paper)}

/* 完成の「ふわっ」 */
@keyframes pop{0%{opacity:0;transform:scale(.9);filter:brightness(1.9) blur(3px)}55%{opacity:1;filter:brightness(1.25) blur(0)}100%{opacity:1;transform:none;filter:none}}
@keyframes rise{0%{opacity:0;transform:translateY(14px)}100%{opacity:1;transform:none}}
.reveal .poster{animation:pop 1.1s cubic-bezier(.2,.8,.2,1) both}
.reveal .side{animation:rise .9s .6s ease-out both}

@media (max-width:900px){
  .opts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .result{grid-template-columns:1fr}
  .result .pimg{width:100%}
}
@media (max-width:620px){
  .strip{display:none!important}
  .prog{display:grid}
  .app{gap:8px}
  .card{padding:12px}
  .opt{padding:8px 10px;min-height:52px}
  .opt b{font-size:14px}
  .opt small{font-size:12px}
  .opt.tb .th{width:58px}
  .opt.tb small{display:none}
  .opt.tb .row{align-items:center}
  .btn{flex:1 1 auto}
  .intro .pimg{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important}
  .reveal .poster,.reveal .side,.pn.pop .im{animation:none!important}
}
@media print{
  .bar,.strip,.foot,.acts,.acts2,.msg{display:none!important}
  body{background:#fff}
}