:root{
  --bg:#eef1f4;--surface:#ffffff;--surface2:#f6f8fa;--ink:#18222d;--ink2:#4c5866;--mute:#7a8694;--line:#d7dde4;--line2:#e7ebef;
  --acc:#0e6b7c;--acc-ink:#ffffff;--acc-soft:#e3f1f4;--acc-line:#9fcbd4;
  --input:#fff8d6;--input-line:#e6d58a;
  --err:#b23c17;--err-bg:#fdeee8;
  --shadow:0 1px 2px rgba(20,30,40,.06),0 4px 14px rgba(20,30,40,.06);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#131920;--surface:#1b232c;--surface2:#212b35;--ink:#e8edf1;--ink2:#b9c3cd;--mute:#8592a0;--line:#2f3a46;--line2:#28323d;
    --acc:#5cc0d2;--acc-ink:#0c1a1e;--acc-soft:#173038;--acc-line:#2c5d69;
    --input:#3a3520;--input-line:#6b5f2a;
    --err:#ff9a78;--err-bg:#3a221a;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 4px 14px rgba(0,0,0,.3);
  }
}
:root[data-theme="dark"]{
  --bg:#131920;--surface:#1b232c;--surface2:#212b35;--ink:#e8edf1;--ink2:#b9c3cd;--mute:#8592a0;--line:#2f3a46;--line2:#28323d;
  --acc:#5cc0d2;--acc-ink:#0c1a1e;--acc-soft:#173038;--acc-line:#2c5d69;
  --input:#3a3520;--input-line:#6b5f2a;
  --err:#ff9a78;--err-bg:#3a221a;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 4px 14px rgba(0,0,0,.3);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Noto Sans JP","Hiragino Sans","Yu Gothic UI",Meiryo,system-ui,sans-serif;font-size:15px;line-height:1.65}
.mono{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
header{background:var(--surface);border-bottom:1px solid var(--line)}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:54px}
.brand{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:1.05rem;letter-spacing:.06em;color:var(--ink);text-decoration:none}
.brand b{color:var(--acc)}
header nav a{color:var(--mute);font-size:.85rem;text-decoration:none;margin-left:18px}
h1{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:1.55rem;letter-spacing:.01em;margin:30px 0 6px;text-wrap:balance}
.lead{color:var(--ink2);margin:0 0 22px;max-width:62ch}
.grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:18px;align-items:start}
@media(max-width:860px){.grid{grid-template-columns:1fr}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
.panel .head{display:flex;align-items:center;gap:10px;padding:14px 18px;border-bottom:1px solid var(--line2)}
.step{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--acc);color:var(--acc-ink);font-weight:700;font-size:.8rem;font-family:"IBM Plex Mono",monospace}
.panel h2{font-family:"Zen Kaku Gothic New",sans-serif;font-size:1rem;font-weight:700;margin:0}
.panel .body{padding:16px 18px 18px}
textarea{display:block;width:100%;min-height:250px;padding:12px;border:1px solid var(--input-line);border-radius:8px;background:var(--input);color:var(--ink);font-family:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;font-size:14px;line-height:1.6;resize:vertical}
textarea::placeholder{color:var(--mute)}
textarea:focus,input:focus,select:focus,button:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
.note{font-size:.82rem;color:var(--mute);margin-top:8px;line-height:1.55}
.note code{font-family:"IBM Plex Mono",monospace;font-size:.8rem;background:var(--surface2);padding:0 4px;border-radius:3px}
.tools{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.btn{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:8px;padding:8px 14px;font-size:.9rem;cursor:pointer;font-family:inherit}
.btn:hover{background:var(--surface2)}
.btn.primary{background:var(--acc);color:var(--acc-ink);border-color:var(--acc);font-weight:700;padding:10px 18px}
.btn.primary:hover{filter:brightness(1.07)}
.btn.quiet{border-color:transparent;color:var(--acc);background:transparent}
.btn.quiet:hover{background:var(--acc-soft)}
fieldset{border:0;padding:0;margin:0 0 14px}
legend{font-size:.8rem;font-weight:700;color:var(--ink2);letter-spacing:.06em;text-transform:uppercase;margin-bottom:8px}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{position:relative}
.chip input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.chip span{display:inline-block;padding:6px 12px;border:1px solid var(--line);border-radius:999px;font-size:.88rem;color:var(--ink2);background:var(--surface);cursor:pointer;user-select:none}
.chip input:checked + span{background:var(--acc-soft);border-color:var(--acc-line);color:var(--acc);font-weight:500}
.chip input:focus-visible + span{outline:2px solid var(--acc);outline-offset:2px}
.field{display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center}
.field label{display:flex;align-items:center;gap:8px;font-size:.9rem;color:var(--ink2)}
input[type=text],input[type=date],select{border:1px solid var(--line);border-radius:7px;padding:7px 9px;font-size:.92rem;background:var(--surface);color:var(--ink);font-family:inherit}
input.mono{font-family:"IBM Plex Mono",monospace}
.seg{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg label{position:relative;flex:1}
.seg input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.seg span{display:block;padding:8px 10px;text-align:center;font-size:.86rem;color:var(--ink2);cursor:pointer;line-height:1.35}
.seg span small{display:block;font-size:.74rem;color:var(--mute)}
.seg input:checked + span{background:var(--acc-soft);color:var(--acc);font-weight:500}
.seg label + label{border-left:1px solid var(--line)}
.results{margin-top:22px}
.bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;padding:12px 16px;background:var(--surface);border:1px solid var(--line);border-bottom:0;border-radius:12px 12px 0 0}
.bar .count{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:1.05rem}
.bar .count b{color:var(--acc);font-size:1.35rem;font-family:"IBM Plex Mono",monospace}
.bar .warn{color:var(--err);font-size:.88rem}
.bar .spacer{flex:1}
.tablewrap{overflow:auto;max-height:560px;border:1px solid var(--line);border-radius:0 0 12px 12px;background:var(--surface);box-shadow:var(--shadow)}
table{border-collapse:separate;border-spacing:0;width:100%;font-size:.9rem;white-space:nowrap}
th,td{padding:8px 12px;border-bottom:1px solid var(--line2);text-align:left}
th{position:sticky;top:0;background:var(--surface2);font-weight:700;font-size:.8rem;color:var(--ink2);letter-spacing:.03em;z-index:1;border-bottom:1px solid var(--line)}
td{font-family:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
td.jp{font-family:"Noto Sans JP",sans-serif}
tr.err td{background:var(--err-bg)}
tr.err td:first-child{color:var(--err)}
td.num{text-align:right}
tbody tr:hover td{background:var(--surface2)}
tr.err:hover td{background:var(--err-bg)}
.empty{padding:40px 20px;text-align:center;color:var(--mute)}
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%) translateY(8px);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:8px;font-size:.9rem;opacity:0;transition:opacity .18s,transform .18s;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%)}
@media (prefers-reduced-motion:reduce){.toast{transition:none}}
.doc{margin:44px auto 70px;max-width:68ch;font-size:.95rem;color:var(--ink2)}
.doc h2{font-family:"Zen Kaku Gothic New",sans-serif;color:var(--ink);font-size:1.15rem;margin:30px 0 8px}
.doc p{margin:0 0 12px}
.doc table{width:auto;font-size:.88rem;white-space:normal;background:var(--surface);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.doc th{position:static}
.doc td{font-family:inherit}
footer{border-top:1px solid var(--line);padding:18px 0 28px;font-size:.82rem;color:var(--mute)}
footer a{color:var(--mute);margin-right:14px}