:root{--paper:#fffdf4;--ink:#1d1d1b;--red:#d7261e;--yel:#ffe23a;--kraft:#e9e4d3;--mute:#6f6b5e;--reg:#23221d;--key:#3a3830;--padh:0px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--kraft);color:var(--ink);font-family:"M PLUS 1p",sans-serif;font-weight:500;overflow-x:hidden}
button{font:inherit;color:inherit;touch-action:manipulation;cursor:pointer;-webkit-tap-highlight-color:transparent}
button:focus-visible{outline:3px solid var(--red);outline-offset:1px}

.tool{max-width:640px;margin:0 auto;padding-bottom:calc(var(--padh) + 16px)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--red);color:#fff;margin:0 -16px;padding:8px 16px}
@media (min-width:672px){.bar{margin:0}}
.bar h1{margin:0;font-size:20px;font-weight:800;letter-spacing:.04em;white-space:nowrap}
.bar nav{display:flex;gap:6px}
.bar nav button{background:none;border:2px solid #fff;color:#fff;padding:3px 10px;font-weight:800;font-size:14px}

/* 結果の帯（レジの表示窓） */
.band{margin:12px 0;background:var(--ink);color:#fff;padding:10px 12px;min-height:78px;transform-origin:50% 0;display:flex;flex-direction:column;justify-content:center}
.band .row{display:flex;align-items:center;gap:10px}
.band .ltr{width:40px;height:40px;font-size:26px;background:var(--yel);color:var(--ink);flex:none}
.band .bt{margin:0;font-weight:800;font-size:15px}
.band .bv{margin:0;display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}
.band .bv b{font-family:"Oswald",sans-serif;font-weight:700;font-size:30px;line-height:1.1;color:var(--yel)}
.band .bv small{font-size:12px;color:#cfcab8}
.band .bs{margin:0;font-size:13px;color:#fff}
.band .bs em{font-style:normal;font-family:"Oswald",sans-serif;font-size:16px;color:var(--yel)}
.band .hint{margin:0;font-size:14px;line-height:1.6}
.band .smp{display:inline-block;background:var(--red);color:#fff;font-size:11px;font-weight:800;padding:0 6px;margin-right:6px}
.band .warn{margin:6px 0 0;font-size:12px;color:#ffb3ae}
.band.flip{animation:flip .6s cubic-bezier(.3,.7,.3,1)}

/* 値札 */
.tags{display:flex;flex-direction:column;gap:10px}
.tag{perspective:700px}
.face{background:var(--paper);border:2px solid var(--ink);padding:6px 10px 10px;transform-origin:50% 0;position:relative}
.thead{display:flex;align-items:center;gap:8px;font-size:13px;min-height:30px}
.ltr{display:inline-grid;place-items:center;width:26px;height:26px;background:var(--ink);color:#fff;font-family:"Oswald",sans-serif;font-weight:700;font-size:16px}
.rk{font-weight:800}
.df{font-family:"Oswald",sans-serif;color:var(--red);font-weight:700;font-size:15px}
.del{margin-left:auto;border:0;background:none;font-size:20px;line-height:1;width:36px;height:30px;color:var(--mute)}
.tprice{display:flex;align-items:baseline;justify-content:flex-end;gap:8px;margin:0 0 6px;flex-wrap:wrap}
.pl{font-size:12px;color:var(--mute)}
.pay{font-size:12px;color:var(--mute);margin-right:auto}
.pv{font-family:"Oswald",sans-serif;font-weight:700;font-size:34px;line-height:1}
.fs{display:grid;grid-template-columns:1.3fr 1.15fr .8fr 1.05fr;gap:6px}
.f{border:0;border-bottom:2px solid var(--ink);background:#fff;padding:3px 5px 4px;text-align:left;min-height:50px;display:flex;flex-direction:column;justify-content:space-between;min-width:0}
.f i{font-style:normal;font-size:11px;color:var(--mute)}
.f b{font-family:"Oswald",sans-serif;font-weight:500;font-size:20px;white-space:nowrap;overflow:hidden;line-height:1.2}
.f b small{font-family:"M PLUS 1p",sans-serif;font-size:11px;font-weight:800;margin-left:2px}
.f.on{background:var(--ink);color:#fff;border-bottom-color:var(--red)}
.f.on i{color:#cfcab8}
.f.on b::after{content:"";display:inline-block;width:2px;height:.85em;background:var(--yel);margin-left:2px;vertical-align:-1px;animation:blink 1s steps(1) infinite}
.f.on.fresh .v{background:var(--red)}
.f .ph{color:#b9b4a4}
@keyframes blink{50%{opacity:0}}
.tag.best .face{background:var(--yel);border:3px solid var(--red);padding:5px 9px 9px}
.tag.best .pv{color:var(--red)}
.tag.best .df{background:var(--red);color:#fff;padding:1px 8px;font-family:"M PLUS 1p",sans-serif;font-weight:800;font-size:13px}
.tag.best .ltr{background:var(--red)}
.tag.void .pv{color:#b9b4a4}
.tag.odd .tprice{opacity:.55}
.tag.odd .pl{color:var(--red);font-weight:800}
.face.flip{animation:flip .6s cubic-bezier(.3,.7,.3,1)}
@keyframes flip{0%{transform:rotateX(0)}35%{transform:rotateX(-75deg)}70%{transform:rotateX(10deg)}100%{transform:rotateX(0)}}
@media (prefers-reduced-motion:reduce){.face.flip,.band.flip{animation:none}.f.on b::after{animation:none}}

.acts{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 4px}
.acts button{border:2px solid var(--ink);background:var(--paper);padding:8px 12px;font-weight:800;font-size:14px}
.acts #add{flex:1 1 100%;border-style:dashed;background:transparent}
.acts #add:disabled{opacity:.4;cursor:default}
.msg{font-size:13px;min-height:1.6em;margin:2px 0}
.msg button{border:0;background:none;color:var(--red);font-weight:800;text-decoration:underline;padding:0 4px}
.share{margin:8px 0 0;display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;font-weight:800}
.share[hidden]{display:none}
.shell-share button{border:2px solid var(--ink);border-radius:0;background:var(--paper);font-weight:800;padding:5px 12px}
.shell-share button:hover{background:var(--yel)}

/* テンキー（レジ） */
.pad{position:sticky;bottom:0;box-sizing:border-box;width:min(100%,560px);margin:0 auto;background:var(--reg);color:#fff;padding:8px 8px calc(8px + env(safe-area-inset-bottom));z-index:20;border-top:3px solid var(--red)}
.pad.hide{display:none}
.pad .ph{display:flex;align-items:center;gap:6px;margin-bottom:6px;color:#fff}
.who{flex:1;font-weight:800;font-size:15px;white-space:nowrap;overflow:hidden;min-width:0}
.who b{font-family:"Oswald",sans-serif;background:#fff;color:var(--ink);padding:0 7px;margin-right:6px}
.tg{background:none;border:2px solid #8d897b;color:#fff;padding:0 10px;font-weight:800;font-size:14px;min-width:50px;height:36px}
.tg.on{background:#fff;color:var(--ink);border-color:#fff}
.tg[hidden]{display:none}
.chips{display:flex;gap:6px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;background:var(--paper);color:var(--ink);border:0;padding:0 11px;height:36px;font-weight:800;font-size:14px}
.chip.y{color:var(--red)}
.chip.on{background:var(--yel);box-shadow:inset 0 0 0 2px var(--red)}
.keys{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:52px;gap:6px}
.k{background:var(--key);border:0;color:#fff;font-family:"Oswald",sans-serif;font-size:26px;font-weight:500;box-shadow:0 3px 0 #0e0e0c;user-select:none;-webkit-user-select:none}
.k:active{transform:translateY(2px);box-shadow:0 1px 0 #0e0e0c}
.k.fn{background:#57544a;font-size:18px;font-family:"M PLUS 1p",sans-serif;font-weight:800}
.k.go{background:var(--red);grid-row:span 2;font-family:"M PLUS 1p",sans-serif;font-weight:800;font-size:20px}
@media (max-height:680px){.keys{grid-auto-rows:44px}.k{font-size:22px}}
.padshow{position:sticky;display:block;margin:0 12px 0 auto;bottom:calc(12px + env(safe-area-inset-bottom));z-index:19;background:var(--reg);color:#fff;border:0;border-top:3px solid var(--red);padding:10px 14px;font-weight:800}
.padshow[hidden]{display:none}

/* 記録・設定の板 */
.panel{position:fixed;inset:0;background:rgba(29,29,27,.55);z-index:30;display:flex;justify-content:center;align-items:flex-end}
.panel[hidden]{display:none}
.pin{background:var(--paper);width:min(100%,560px);max-height:85vh;overflow:auto;padding:12px 16px calc(20px + env(safe-area-inset-bottom));border-top:4px solid var(--red)}
.pin header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.pin h2{margin:0;font-size:18px;font-weight:800}
.pin h3{margin:12px 0 4px;font-size:14px}
.close{border:2px solid var(--ink);background:none;padding:4px 12px;font-weight:800}
.seg{display:flex}
.seg button{flex:1;border:2px solid var(--ink);background:#fff;padding:10px 4px;font-weight:800;font-size:14px}
.seg button+button{border-left:0}
.seg button.on{background:var(--ink);color:#fff}
.note{font-size:12px;color:var(--mute);line-height:1.6}
.wipe{margin-top:16px;border:2px solid var(--red);color:var(--red);background:none;padding:6px 12px;font-weight:800}
.rec{display:flex;gap:8px;align-items:center;border-bottom:1px dashed #b3ad9a;padding:10px 0}
.rec .rt{flex:1;min-width:0;font-size:14px;line-height:1.5}
.rec .rt small{display:block;color:var(--mute);font-size:12px}
.rec .rt b{font-family:"Oswald",sans-serif;font-size:17px}
.rec button{border:2px solid var(--ink);background:#fff;padding:4px 10px;font-weight:800;font-size:13px;flex:none}
.rec button.x{border-color:transparent;background:none;color:var(--mute)}
.empty{color:var(--mute);font-size:14px;padding:16px 0}

/* 説明 */
.howto{max-width:640px;margin:28px auto;line-height:1.85;font-size:15px}
.howto h2{font-size:17px;font-weight:800;border-left:6px solid var(--red);padding-left:8px;margin:0 0 8px}
.howto h3{font-size:15px;margin:16px 0 2px}
.howto ol,.howto ul{padding-left:1.3em;margin:0}
.howto p{margin:0 0 8px}
.howto code{font-family:"Oswald",sans-serif;background:var(--paper);padding:0 4px}
.foot{text-align:center;font-size:12px;color:var(--mute);margin:24px 0 16px}