:root{
  --bg0:#060b1a;
  --bg1:#0b1530;
  --card: rgba(255,255,255,.06);
  --line: rgba(255,255,255,.14);
  --text:#f3f4f6;
  --muted: rgba(243,244,246,.72);
  --good:#22c55e;
  --warn:#f59e0b;
  --bad:#ef4444;
  --btn:#22c55e;
  --btn2:#16a34a;
  --btnAlt:#60a5fa;
  --btnAlt2:#3b82f6;
  --shadow: 0 18px 40px rgba(0,0,0,.45);
  --radius: 18px;
}
*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 600px at 20% 10%, rgba(96,165,250,.25), transparent 60%),
              radial-gradient(1000px 500px at 80% 30%, rgba(34,197,94,.20), transparent 65%),
              linear-gradient(180deg, var(--bg1), var(--bg0));
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a{ color: inherit; text-decoration:none; }
button{ font-family: inherit; }
.container{ max-width: 980px; margin: 0 auto; padding: 16px 14px 44px; }
.header{ display:flex; align-items:flex-start; justify-content:space-between; gap:12px; margin: 6px 0 14px; }
.brand{ display:flex; flex-direction:column; gap:6px; }
.brand h1{ margin:0; font-size: 22px; letter-spacing:.02em; }
.brand .sub{ color: var(--muted); font-size: 14px; line-height:1.5; }
.nav{ display:flex; gap:10px; flex-wrap:wrap; justify-content:flex-end; }
.pill{
  padding: 10px 12px; border-radius: 999px;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14);
  font-weight: 900; font-size: 14px;
}
.grid{ display:grid; grid-template-columns: repeat(12,1fr); gap: 12px; }
.col-12{ grid-column: span 12; }
.col-8{ grid-column: span 8; }
.col-6{ grid-column: span 6; }
.col-4{ grid-column: span 4; }
@media (max-width: 860px){
  .col-8,.col-6,.col-4{ grid-column: span 12; }
  .header{ flex-direction:column; align-items:stretch; }
  .nav{ justify-content:flex-start; }
}
.card{
  background: var(--card);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.h2{ margin: 0 0 10px; font-size: 18px; font-weight: 1000; }
.notice{ color: var(--muted); font-size: 14px; line-height: 1.7; }
.btnrow{
  display:grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px;
}
@media (max-width: 520px){ .btnrow{ grid-template-columns: 1fr; } }
button, .btn{
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  appearance:none;
  border:none;
  border-radius: 18px;
  padding: 18px 16px;
  font-size: 20px;
  font-weight: 1000;
  cursor:pointer;
  color: #04110a;
  background: linear-gradient(180deg, var(--btn), var(--btn2));
  box-shadow: 0 16px 26px rgba(0,0,0,.35);
  display:inline-block;
  text-align:center;
}
button.alt, .btn.alt{ color: #07101f; background: linear-gradient(180deg, var(--btnAlt), var(--btnAlt2)); }
button.ghost, .btn.ghost{
  color: var(--text);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: none;
}
button:disabled{ opacity:.55; cursor:not-allowed; filter: saturate(.7); }
.kbd{ display:inline-block; padding: 4px 10px; border-radius: 12px; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.06); font-weight: 900; font-size: 14px; }
.sep{ height:1px; background: rgba(255,255,255,.12); margin: 12px 0; }
.statGrid{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 860px){ .statGrid{ grid-template-columns: repeat(2, 1fr); } }
.stat{ background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); border-radius: 14px; padding: 10px 12px; }
.stat .k{ color: rgba(255,255,255,.82); font-size: 13px; font-weight: 900; }
.stat .v{ color: #ffffff; font-size: 22px; font-weight: 1100; margin-top: 2px; }
.badge{ display:inline-block; padding: 4px 12px; border-radius: 999px; font-size: 14px; font-weight: 1000; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.06); }
.badge.good{ background: rgba(34,197,94,.16); border-color: rgba(34,197,94,.35); color:#dcffe9; }
.badge.warn{ background: rgba(245,158,11,.16); border-color: rgba(245,158,11,.35); color:#fff3d6; }
.badge.bad{  background: rgba(239,68,68,.16); border-color: rgba(239,68,68,.35); color:#ffe0e0; }
.canvasWrap{ background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.12); border-radius: 16px; overflow:hidden; }
.table{ width:100%; border-collapse: collapse; font-size: 14px; }
.table th,.table td{ padding: 10px 8px; border-bottom: 1px solid rgba(255,255,255,.10); text-align:left; vertical-align:top; }
.table th{ color: rgba(255,255,255,.78); font-weight: 1000; }
.small{ font-size: 13px; color: var(--muted); }
.grid5{ display:grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.cell{
  user-select:none; -webkit-user-select:none; touch-action: manipulation;
  border-radius: 14px; border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06); color: #fff;
  font-weight: 1100; font-size: 20px; padding: 16px 0; text-align:center;
}
.cell.ok{ background: rgba(34,197,94,.18); border-color: rgba(34,197,94,.35); }
.cell.bad{ background: rgba(239,68,68,.18); border-color: rgba(239,68,68,.35); }
.cell.next{ outline: 3px solid rgba(96,165,250,.55); }
.tiles{ display:grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.tile{
  user-select:none; -webkit-user-select:none; touch-action: manipulation;
  border-radius: 18px; border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.08);
  height: 120px;
  display:flex; align-items:center; justify-content:center;
  font-weight: 1100; font-size: 20px;
}
.tile.flash{ background: rgba(96,165,250,.35); border-color: rgba(96,165,250,.65); }