:root {
  --ink: #1f2a2c;
  --ink-soft: #5c6b6e;
  --bg: #e9eee9;
  --paper: #ffffff;
  --line: #d3ddd8;
  --primary: #1d5c66;
  --primary-dark: #123e45;
  --board: #173f47;
  --board-line: #2b5a62;
  --chalk: #f4f1e6;
  --hit: #f08a3c;
  --near: #f6c35b;
  --gold: #f2c14e;
  --font: "Zen Kaku Gothic New", system-ui, sans-serif;
  --num: "Martian Mono", ui-monospace, "Zen Kaku Gothic New", monospace;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-weight: 500; line-height: 1.7; line-break: strict; }
.hidden { display: none !important; }
.nw { white-space: nowrap; }

.g-head { display: flex; align-items: center; gap: 10px; padding: 10px 16px; max-width: 520px; margin: 0 auto; font-size: 13px; font-weight: 900; }
.g-brand { color: var(--ink-soft); text-decoration: none; }
.g-title { flex: 1; text-align: center; }
.g-head [data-mg-account] a { color: var(--primary-dark); text-decoration: none; }

main { max-width: 520px; margin: 0 auto; padding: 0 12px 24px; }
.play { position: relative; user-select: none; -webkit-user-select: none; }

.bar { display: grid; grid-template-columns: 1.2fr 1fr; gap: 8px; margin-bottom: 10px; }
.box { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 6px 8px; text-align: center; min-width: 0; }
.lbl { font-size: 11px; font-weight: 900; color: var(--ink-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.val { font: 700 22px/1.25 var(--num); font-variant-numeric: tabular-nums; white-space: nowrap; }
.val small { font-size: 15px; color: var(--ink-soft); }

/* 答え合わせの黒板（言った数が上から並び、いちばん下に今入れている数） */
.sheet { background: var(--board); border-radius: 18px; padding: 8px 10px 10px; box-shadow: 0 10px 28px rgba(23, 63, 71, 0.25); color: var(--chalk); }
.rows { list-style: none; margin: 0; padding: 0; max-height: max(150px, calc(100svh - 440px)); min-height: 64px; overflow-y: auto; overscroll-behavior: contain; }
.row { display: flex; align-items: center; gap: 8px; padding: 5px 2px; border-bottom: 1px dashed var(--board-line); }
.r-no, .now-no { flex: none; width: 18px; font: 700 12px/1 var(--num); color: #8fb3b8; text-align: right; }
.r-num { flex: none; display: flex; gap: 3px; }
.r-num b { display: grid; place-items: center; width: 26px; height: 30px; border-radius: 6px; background: rgba(255, 255, 255, 0.08); font: 700 17px/1 var(--num); }
.row.win .r-num b { background: var(--hit); color: #fff; }
.r-res { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.pips { display: flex; gap: 4px; }
.pips i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.pips .p-hit { background: var(--hit); }
.pips .p-near { border: 2.5px solid var(--near); }
.pips .p-none { background: #3e6870; transform: scale(0.55); }
.r-txt { display: flex; gap: 8px; font-size: 11px; font-weight: 900; white-space: nowrap; }
.t-hit { color: #ffb27a; }
.t-near { color: var(--near); }

.now { display: flex; align-items: center; gap: 8px; padding: 8px 2px 0; }
.slots { flex: none; display: flex; gap: 5px; }
.slot { display: grid; place-items: center; width: 40px; height: 46px; border-radius: 10px; background: var(--chalk); color: var(--primary-dark); font: 700 24px/1 var(--num); box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.12); }
.slot.cur { outline: 3px solid var(--near); outline-offset: -3px; }
.now-res { flex: 1; text-align: right; font-size: 12px; font-weight: 900; color: #b9d3d6; white-space: nowrap; }
.play.len5 .slot { width: 36px; }
.play.len5 .r-num b { width: 22px; font-size: 15px; }
.play.solved .sheet { animation: win 1s ease-out; }
@keyframes win { 40% { transform: scale(1.02); background: #1f5560; } }
@media (prefers-reduced-motion: reduce) { .play.solved .sheet { animation: none; } }

/* 数字のボタン */
.pad { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; margin-top: 10px; touch-action: manipulation; }
.key { position: relative; height: 50px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); color: var(--ink); font: 700 22px/1 var(--num); cursor: pointer; padding: 0; display: grid; place-items: center; }
.key:disabled { opacity: 0.3; cursor: default; }
.key.fn { color: var(--ink-soft); }
.key.go { background: var(--primary); border-color: var(--primary); color: #fff; font: 900 15px/1 var(--font); box-shadow: 0 3px 0 var(--primary-dark); }
.key.go:disabled { box-shadow: none; }
/* メモの印: 使わない（線で消す）・使う（丸で囲む） */
.key.m-out { background: #dfe4e2; color: #9aa6a8; }
.key.m-out::after { content: ""; position: absolute; left: 22%; right: 22%; top: 50%; height: 2.5px; background: #b04a3a; transform: rotate(-35deg); border-radius: 2px; }
.key.m-in { box-shadow: inset 0 0 0 3px var(--hit); }

.tools { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-top: 10px; }
.tools .tool { flex-direction: column; justify-content: center; gap: 3px; padding: 8px 2px; font-size: 12px; white-space: nowrap; }
.tool { display: inline-flex; align-items: center; gap: 4px; padding: 9px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); color: var(--ink); font: 900 13px/1 var(--font); cursor: pointer; }
.tool.on { background: var(--near); border-color: #e0a93a; }
.tool:disabled { opacity: 0.35; cursor: default; }
.kbd { margin: 8px 0 0; font-size: 12px; color: var(--ink-soft); text-align: center; }

/* タイトル・結果（盤を隠して全体を見せる） */
.play.menu .bar, .play.menu .sheet, .play.menu .pad, .play.menu .tools, .play.menu .kbd { display: none; }
.card-ui { width: 100%; max-width: 420px; margin: 0 auto; background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 20px 16px 16px; text-align: center; box-shadow: 0 10px 30px rgba(31, 42, 44, 0.1); }
.logo { margin: 0; font: 900 28px/1.3 var(--font); letter-spacing: 0.04em; white-space: nowrap; }
.day { margin: 2px 0 12px; font-size: 13px; color: var(--ink-soft); font-weight: 900; }
.daily-box { border: 2px solid var(--primary); border-radius: 16px; padding: 12px; margin-bottom: 10px; }
.daily-lbl { font-size: 11px; font-weight: 900; color: var(--ink-soft); letter-spacing: 0.1em; }
.daily-name { font: 900 24px/1.4 var(--font); color: var(--primary-dark); }
.daily-par { font-size: 13px; font-weight: 900; color: var(--ink-soft); margin-top: 2px; }
.daily-note { margin: 4px 0 8px; font-size: 12px; color: var(--ink-soft); }
.done { font-size: 14px; font-weight: 900; margin-top: 6px; }
.free-lbl { font-size: 12px; font-weight: 900; color: var(--ink-soft); margin: 6px 0 4px; }
.free-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.howto { list-style: none; margin: 12px 0 0; padding: 10px 12px; background: var(--bg); border-radius: 12px; text-align: left; font-size: 13px; font-weight: 700; }
.howto li { display: flex; align-items: baseline; gap: 6px; padding: 3px 0; }
.howto .num { flex: none; font-weight: 900; color: var(--primary); }
.howto .hb { color: #c4621a; }
.howto .nb { color: #a8790f; }
.stats { font-size: 12px; color: var(--ink-soft); font-weight: 700; margin: 10px 0 0; }

.btn { display: block; width: 100%; margin: 8px 0; padding: 13px 10px; border: 0; border-radius: 14px; font: 900 16px/1.2 var(--font); cursor: pointer; background: var(--bg); color: var(--ink); }
.btn small { display: block; font-size: 11px; font-weight: 700; color: var(--ink-soft); margin-top: 3px; }
.btn.primary { background: var(--primary); color: #fff; box-shadow: 0 4px 0 var(--primary-dark); }
.btn.primary:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--primary-dark); }
.btn.lv { margin: 0; font-size: 15px; padding: 10px 2px; }
.btn.sub { font-size: 14px; }
.btn.ghost { background: transparent; border: 2px solid var(--line); color: var(--ink-soft); font-size: 14px; }
.btn.x { background: #000; color: #fff; display: flex; align-items: center; justify-content: center; gap: 8px; }
.btn:disabled { opacity: 0.5; cursor: default; }

.clear-lbl { font-size: 13px; font-weight: 900; color: var(--primary-dark); }
.clear-moves { margin: 6px 0; }
.clear-moves b { font: 700 60px/1 var(--num); font-variant-numeric: tabular-nums; }
.clear-moves span { font: 900 18px/1 var(--font); margin-left: 4px; }
.clear-moves.miss b { color: var(--ink-soft); }
.clear-sub { margin: 0; font-size: 14px; font-weight: 700; }
.answer { display: inline-flex; align-items: center; gap: 10px; margin: 10px 0 0; padding: 6px 14px; border-radius: 12px; background: var(--board); color: var(--chalk); }
.answer-lbl { font-size: 12px; font-weight: 900; }
.answer-num { font: 700 24px/1.2 var(--num); letter-spacing: 0.12em; }
.best { display: block; width: max-content; margin: 8px auto 0; padding: 2px 12px; border-radius: 999px; background: var(--gold); font-weight: 900; font-size: 13px; }
.rank { margin: 12px 0; padding: 8px; background: var(--bg); border-radius: 14px; }
.rank-lbl { font-size: 11px; font-weight: 900; color: var(--ink-soft); }
.rank-name { font: 900 22px/1.4 var(--font); }
.c-note { margin: 8px 0; padding: 8px 10px; border-radius: 12px; background: #fff6dd; font-size: 13px; font-weight: 700; text-align: left; }
.share { margin: 8px 0; }

.toast { position: absolute; left: 50%; top: 30%; transform: translate(-50%, -50%); z-index: 40; max-width: calc(100% - 24px); padding: 10px 18px; border-radius: 16px; background: rgba(31, 42, 44, 0.92); color: #fff; font-weight: 900; font-size: 14px; text-align: center; pointer-events: none; }

/* 下の解説（ポータルと同じ決まり: 行間 1.85・段落の間は1行分・見出しは前を広く後ろを狭く） */
.guide { margin-top: 28px; background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 22px 20px 12px; font-size: 15px; line-height: 1.85; }
.guide p { margin: 0 0 1em; }
.guide h2 { font: 900 19px/1.4 var(--font); margin: 32px 0 12px; padding-left: 10px; border-left: 5px solid var(--primary); }
.guide h2:first-child { margin-top: 0; }
.guide h3 { font-size: 16px; margin: 22px 0 6px; line-height: 1.5; }
.guide ul { padding-left: 1.3em; margin: 0 0 1em; }
.guide li { margin: 6px 0; }
.guide .steps { list-style: none; padding: 0; }
.guide .steps li { display: flex; align-items: baseline; gap: 6px; }
.guide .steps .num { flex: none; font-weight: 900; color: var(--primary); }
.guide details { border-top: 1px solid var(--line); padding: 12px 0; }
.guide details p { margin: 8px 0 4px; }
.guide summary { font-weight: 900; cursor: pointer; }
.guide a { color: var(--primary-dark); }
.g-foot { max-width: 520px; margin: 0 auto; padding: 14px 16px 28px; font-size: 12px; text-align: center; }
.g-foot a { color: var(--ink-soft); }

.card-ui .mg-box { background: var(--bg); border-color: transparent; }
@media (max-width: 360px) {
  .key { height: 46px; font-size: 20px; }
  .slot { width: 36px; height: 42px; font-size: 21px; }
  .play.len5 .slot { width: 32px; }
  .r-num b { width: 23px; }
  .play.len5 .r-num b { width: 20px; font-size: 14px; }
  .row { gap: 6px; }
}