html,body{margin:0;padding:0}
/* 夜の定禅寺通そのものが画面。文字は左上の題と下の操作帯だけに絞り、光を邪魔しない */
:root{
  color-scheme: dark;
  --night:#05070d;      /* 冬の夜空 */
  --ink:#ece4d3;        /* 文字 */
  --dim:#958c78;        /* 添え書き */
  --amber:#ffb45c;      /* 電球の色 */
  --glass:rgba(9,11,18,.66);
  --line:rgba(255,186,104,.24);
  --f-disp:'Shippori Mincho B1','Hiragino Mincho ProN','Yu Mincho',serif;
  --f-body:'Zen Kaku Gothic New','Hiragino Sans','Yu Gothic',system-ui,sans-serif;
}
html,body{height:100%}
body{background:var(--night);color:var(--ink);font-family:var(--f-body);overflow:hidden;-webkit-user-select:none;user-select:none}
#c{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none;outline:none}
#hud{position:fixed;left:0;top:0;padding-top:calc(env(safe-area-inset-top,0px) + 12px);padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));pointer-events:none}
#hud h1{font-family:var(--f-disp);font-weight:600;font-size:clamp(19px,3vw,28px);letter-spacing:.08em;line-height:1.15;margin:0;text-wrap:balance;text-shadow:0 0 16px rgba(255,160,70,.35)}
#hud .sub{font-size:11.5px;color:var(--dim);margin-top:2px;letter-spacing:.05em;line-height:1.35}
#bar{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(env(safe-area-inset-bottom,0px) + 10px);display:flex;gap:2px;padding:3px;background:var(--glass);border:1px solid var(--line);border-radius:999px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
#bar button{font:inherit;font-size:13px;line-height:1;color:var(--ink);background:transparent;border:0;padding:8px 12px;border-radius:999px;cursor:pointer;white-space:nowrap}
#bar button[aria-pressed="true"]{background:rgba(255,180,92,.2);color:#ffdcae}
#bar button:hover{background:rgba(255,180,92,.1)}
#bar button:focus-visible{outline:2px solid var(--amber);outline-offset:1px}
#hint{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(env(safe-area-inset-bottom,0px) + 52px);font-size:11px;color:var(--dim);white-space:nowrap;pointer-events:none;transition:opacity .6s}
#credit{position:fixed;right:max(16px,env(safe-area-inset-right,0px));top:calc(env(safe-area-inset-top,0px) + 12px);font-size:9.5px;color:var(--dim);text-align:right;line-height:1.45;pointer-events:none;max-width:min(46vw,360px);opacity:.85}
#plate{position:fixed;left:50%;transform:translateX(-50%);top:calc(env(safe-area-inset-top,0px) + 72px);padding:6px 14px;background:var(--glass);border:1px solid var(--line);border-radius:6px;text-align:center;pointer-events:none;white-space:nowrap}
#plate b{display:block;font-family:var(--f-disp);font-weight:600;font-size:16px;letter-spacing:.1em}
#plate span{font-size:11px;color:var(--dim)}
#load{position:fixed;inset:0;display:grid;place-items:center;font-family:var(--f-disp);font-size:15px;letter-spacing:.12em;color:var(--dim);pointer-events:none;transition:opacity .8s}
#err{position:fixed;inset:auto 16px 70px 16px;color:#ffb0a0;font-size:12px;text-align:center}
#hud h1 .unofficial{display:inline-block;font-family:var(--f-body);font-size:11px;font-weight:500;letter-spacing:.04em;vertical-align:5px;margin-left:8px;padding:1px 6px;border-radius:4px;background:rgba(255,220,170,.14);color:#e8d9bf;text-shadow:none}
#credit b{color:var(--ink);font-weight:500}
#credit .short{display:none}
@media (max-width:560px){#credit .full{display:none}#credit .short{display:inline}}
#credit a{color:#ffd59c;pointer-events:auto;text-decoration:underline;text-underline-offset:2px}
/* はじめの案内: 夜景の上に置いた琥珀色のガラス板 (新本庁舎の案内と同じ組み立て) */
#start{position:fixed;inset:0;z-index:20;display:flex;align-items:center;justify-content:center;padding-block:16px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));background:radial-gradient(ellipse at center,rgba(0,0,0,.12),rgba(0,0,0,.55));transition:opacity .45s}
#start.out{opacity:0;pointer-events:none}
.scard{position:relative;width:min(760px,100%);max-height:calc(100% - 8px);overflow:auto;color:#fff7ea;border-radius:20px;padding:16px 22px 14px;
  background:linear-gradient(135deg,rgba(40,26,12,.62),rgba(18,12,8,.5) 45%,rgba(70,44,16,.5));border:1px solid rgba(255,226,180,.4);
  -webkit-backdrop-filter:blur(22px) saturate(150%);backdrop-filter:blur(22px) saturate(150%);
  box-shadow:0 30px 80px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,240,210,.55),inset 0 0 40px rgba(255,170,70,.12);text-shadow:0 1px 2px rgba(0,0,0,.6)}
.scard::before{content:"";position:absolute;inset:-40% -10% auto -10%;height:60%;pointer-events:none;background:linear-gradient(170deg,rgba(255,240,215,.16),rgba(255,240,215,0) 60%);transform:rotate(-4deg)}
.shead{display:flex;align-items:center;gap:10px}
.stag{font-size:11px;letter-spacing:.32em;color:#ffcf8a}
.sbadge{font-size:11px;font-weight:500;padding:1px 7px;border-radius:4px;background:rgba(255,235,205,.18);color:#fff1dc;letter-spacing:.06em}
#startTitle{font-family:var(--f-disp);font-weight:600;font-size:clamp(30px,6vw,46px);line-height:1.12;margin:4px 0 2px;letter-spacing:.08em;text-wrap:balance;text-shadow:0 1px 2px rgba(0,0,0,.6),0 0 24px rgba(255,170,70,.45)}
.slead{margin:0;font-size:clamp(14px,2.2vw,17px);color:#fff1dc}
.sfacts{display:flex;flex-wrap:wrap;gap:4px 14px;margin:8px 0 12px;font-size:13px;color:#f2dcb8;font-variant-numeric:tabular-nums}
.schoice{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sbtn{font:inherit;text-align:left;cursor:pointer;border-radius:12px;padding:12px 14px;color:#fff7ea;display:flex;flex-direction:column;gap:3px;
  background:rgba(255,240,215,.1);border:1px solid rgba(255,230,190,.36);box-shadow:inset 0 1px 0 rgba(255,240,215,.35);text-shadow:inherit;transition:transform .15s,box-shadow .15s}
.sbtn b{font-family:var(--f-disp);font-weight:600;font-size:20px;letter-spacing:.06em}
.sbtn small{font-size:12.5px;color:#f6e3c4}
.sbtn.primary{color:#3a2306;text-shadow:0 1px 0 rgba(255,255,255,.45);background:linear-gradient(rgba(255,240,205,.97),rgba(255,198,120,.9));border-color:rgba(255,248,230,.9);
  box-shadow:0 0 32px rgba(255,190,100,.5),0 4px 0 rgba(150,90,30,.45),0 10px 24px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.95)}
.sbtn.primary small{color:#5a3810}
.sbtn:hover{transform:translateY(-2px)}
.sbtn:focus-visible{outline:3px solid #ffd59c;outline-offset:2px}
.sops{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.sops section{padding:8px 10px;border-radius:12px;background:rgba(255,240,215,.07);border:1px solid rgba(255,230,190,.18)}
.sops h3{margin:0 0 4px;font-size:13px;font-weight:500;color:#ffd9a6;letter-spacing:.06em}
.orow{display:flex;align-items:center;gap:8px;margin:3px 0;font-size:13.5px}
.orow kbd{display:inline-block;min-width:6.4em;text-align:center;padding:2px 8px;border-radius:6px;font:inherit;font-size:12px;font-weight:500;color:#3a2306;text-shadow:none;
  background:linear-gradient(rgba(255,250,240,.95),rgba(255,232,200,.82));border:1px solid rgba(255,248,230,.9);box-shadow:0 3px 8px rgba(0,0,0,.3)}
.sfoot{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:2px 14px;margin:10px 0 0;padding-top:8px;border-top:1px solid rgba(255,230,190,.2)}
.sfoot p{margin:0;font-size:12.5px;line-height:1.45;color:#fff1dc;text-wrap:pretty}
.sfoot b{color:#fff;font-weight:500}
.sorg{white-space:nowrap}
.sorg a{color:#ffd59c;text-decoration:underline;text-underline-offset:3px;padding:3px 0}
.sorg a:focus-visible{outline:2px solid #ffd59c;outline-offset:2px;border-radius:3px}
.snote{margin:4px 0 0;font-size:11px;line-height:1.5;color:#f2dcb8;opacity:.92}
@media (pointer:coarse){.sops .op-mouse{display:none}.sops{grid-template-columns:1fr}}
@media (max-width:560px){.schoice{grid-template-columns:1fr}.sops{grid-template-columns:1fr}.scard{padding:12px 14px}.sbtn b{font-size:18px}}
@media (prefers-reduced-motion:reduce){.sbtn,#start{transition:none}}
@media (max-width:560px){#credit{top:auto;bottom:calc(env(safe-area-inset-bottom,0px) + 70px);font-size:9px;max-width:none;left:max(16px,env(safe-area-inset-left,0px));text-align:left}#hint{bottom:calc(env(safe-area-inset-bottom,0px) + 50px);background:var(--glass);padding:2px 8px;border-radius:6px}}
noscript p{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);margin:0;padding:12px 16px;background:var(--glass);border:1px solid var(--line);border-radius:8px;font-size:14px;color:var(--ink)}