@font-face{font-family:KanaSheet;src:url(/assets/fonts/kana.ttf) format("truetype");font-display:swap}
:root{--ink:#1d2330;--mute:#5d6675;--line:#d9dde4;--bg:#fbfaf7;--card:#fff;--accent:#c8323c;--accent2:#1a6bcc}
*{box-sizing:border-box}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,KanaSheet,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--accent2)}
.top{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--line);background:var(--card)}
.brand{font:700 20px KanaSheet,sans-serif;color:var(--ink);text-decoration:none}.brand span{font:600 15px system-ui,sans-serif;margin-left:6px}
nav a{margin-right:14px;text-decoration:none;color:var(--ink);font-weight:500;display:inline-block;padding:8px 0}
main{max-width:1180px;margin:0 auto;padding:16px}
h1{font-size:clamp(24px,4vw,34px);line-height:1.2;margin:10px 0}
.lead{color:var(--mute);font-size:17px;max-width:720px}
.maker{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:20px;align-items:start}
@media (max-width:860px){.maker{grid-template-columns:minmax(0,1fr)}}
.panel{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
fieldset{border:0;margin:0 0 10px;padding:0}legend{font-weight:700;margin-bottom:6px}
label{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:6px 0}
label.full{display:block}label.full input{display:block;width:100%;margin-top:4px}
.pill{display:inline-flex;margin-right:10px;min-height:44px}
.chk{justify-content:flex-start;min-height:40px}.chk input{width:20px;height:20px}
input[type=text],select{font:16px KanaSheet,system-ui,sans-serif;padding:8px 10px;border:1px solid #b9c0cc;border-radius:8px;background:#fff;min-height:44px}
button{font:600 15px system-ui,sans-serif;min-height:44px;padding:8px 14px;border-radius:8px;border:1px solid #b9c0cc;background:#fff;color:var(--ink);cursor:pointer}
button.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.quick{display:flex;gap:8px;margin-bottom:8px}
.chart{display:grid;gap:4px}
.crow{display:flex;gap:4px;align-items:center}
.rowbtn{min-width:44px;padding:4px;font-size:13px}
.kbox{margin:0;position:relative}.kbox input{position:absolute;opacity:0;width:1px;height:1px}
.kbox span{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid #c5ccd6;border-radius:8px;font:22px KanaSheet,sans-serif;background:#fff;cursor:pointer}
.kbox input:checked+span{background:#1d2330;color:#fff;border-color:#1d2330}
.kbox input:focus-visible+span{outline:3px solid var(--accent2)}
.actions{display:flex;flex-wrap:wrap;gap:8px}
.status{color:var(--mute);min-height:1.6em;margin:6px 0}
.preview{display:grid;gap:14px}
.pg{background:#e9ebef;padding:8px;border-radius:8px}.pgl{font-size:13px;color:var(--mute);margin-bottom:4px}
.sheet-svg{width:100%;height:auto;display:block;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.15)}
.promo{background:#fff6e5;border:1px solid #f0d9a8;border-radius:10px;padding:12px 14px;margin:18px 0}
.promo.soon{background:#eef1f6;border-color:var(--line);color:var(--mute)}
.cta2{display:inline-block;background:var(--accent2);color:#fff;text-decoration:none;font-weight:700;padding:12px 16px;border-radius:8px;margin-left:8px}
.qlink{font-size:11px;font-weight:400}
.quizwrap{max-width:520px;margin:0 auto}
.qsetup{display:flex;flex-direction:column;gap:6px}
.qprompt{font:64px/1.2 KanaSheet,system-ui,sans-serif;text-align:center;margin:16px 0}
.qopts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.qopt{font-size:20px;padding:14px}
.qopt.correct{background:#dff3e6;border-color:#0d8c4d;color:#0d5c33}
.qopt.wrong{background:#fbe1e2;border-color:#d62933;color:#8c1c22}
.prose{max-width:760px}
.kchart{border-collapse:collapse;margin:12px 0;width:100%;max-width:640px}
.kchart th{font-size:13px;color:var(--mute);width:36px}
.kchart td{border:1px solid var(--line);text-align:center;padding:0;background:#fff}
.kchart a{display:block;padding:6px 2px;text-decoration:none;color:var(--ink);min-height:44px}
.kchart .k{display:block;font:clamp(22px,6vw,32px)/1.2 KanaSheet,sans-serif}.kchart .r{font-size:12px;color:var(--mute)}
.kpage{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:24px;align-items:start}
@media (max-width:700px){.kpage{grid-template-columns:minmax(0,1fr)}}
.big svg{width:100%;height:auto;display:block}
.bg{fill:#fff;stroke:#8b93a1;stroke-width:.6}.gd{stroke:#c9ced6;stroke-width:.4;stroke-dasharray:1.5 1.5}
.gl{font:100px KanaSheet,sans-serif;fill:#e3e5e9}
.so .s{fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.so.play .s{stroke-dasharray:1;stroke-dashoffset:1;animation:draw .8s ease-in-out forwards;animation-delay:var(--d)}
@keyframes draw{to{stroke-dashoffset:0}}
.s0{stroke:#d62933}.s1{stroke:#1a6bcc}.s2{stroke:#0d8c4d}.s3{stroke:#cc7305}.s4{stroke:#8c33b3}
.n text{font:bold 5.5px system-ui,sans-serif;fill:#fff}.n0 circle{fill:#d62933}.n1 circle{fill:#1a6bcc}.n2 circle{fill:#0d8c4d}.n3 circle{fill:#cc7305}.n4 circle{fill:#8c33b3}
.kfacts .kc{font:56px/1 KanaSheet,sans-serif;vertical-align:middle;margin-right:8px}
.words{padding-left:18px}.kw{font:24px KanaSheet,sans-serif}.rw{color:var(--mute)}
.note{background:#eef3fb;border-radius:8px;padding:8px 12px}
.cta{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;font-weight:700;padding:12px 16px;border-radius:8px}
.steps{display:flex;flex-wrap:wrap;gap:12px}.steps figure{margin:0;width:96px;text-align:center}.steps svg{width:96px;height:96px}
.steps .prev,.steps .cur{fill:none;stroke-width:7;stroke-linecap:round;stroke-linejoin:round}.steps .prev{stroke:#8c929c}.steps .cur{stroke:#d62933}
.pn{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;margin:20px 0}.pn a{padding:10px 0}
footer{border-top:1px solid var(--line);margin-top:30px;padding:16px;color:var(--mute);font-size:14px;text-align:center}
@media print{
  body{background:#fff}header,footer,.panel,.actions,.status,.lead,.prose,.promo,h1,.pgl{display:none!important}
  main{padding:0;max-width:none}.maker{display:block}.preview{display:block}.pg{padding:0;background:none;break-after:page}
  .sheet-svg{box-shadow:none;width:100%}
}