:root{font-family:"Yu Gothic",Meiryo,sans-serif;color:#253b36;background:#f5f7f3;font-synthesis:none;line-height:1.7;--green:#23634f;--border:#d9e2dc}
*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;background:white;color:var(--green);border:1px solid #a2b9ac;border-radius:10px;padding:10px 18px;font-weight:700}button:hover{background:#edf4ed}button:disabled{opacity:.5;cursor:not-allowed}a{color:inherit}:focus-visible{outline:3px solid #bd6715;outline-offset:4px}.skip-link{position:absolute;top:-100px;background:white;padding:12px;z-index:2}.skip-link:focus{top:8px}.header{max-width:1280px;margin:auto;padding:22px 32px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.brand{text-decoration:none;font-size:22px;font-weight:800;display:flex;align-items:center;gap:10px}.brand-icon{background:var(--green);color:white;border-radius:9px;width:36px;text-align:center}.badge{font-size:12px;background:#e8efe3;padding:5px 12px;border-radius:30px;color:#47603c}main{max-width:1280px;margin:auto;padding:0 32px 48px}.intro{padding:40px 0 32px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--green);margin:0 0 8px}h1{font-size:clamp(28px,4vw,40px);letter-spacing:.04em;margin:0 0 12px;line-height:1.4}.intro>p:last-child{color:#5a6b62;font-size:14px;margin:0}.workspace{display:grid;grid-template-columns:380px minmax(0,1fr);gap:24px;align-items:start}.card{background:white;border:1px solid var(--border);border-radius:16px;padding:24px;margin-bottom:18px;box-shadow:0 3px 12px #263d3404}h2{font-size:17px;margin:0 0 20px;display:flex;align-items:center;gap:10px}.step{display:inline-grid;place-items:center;background:#edf3e9;color:var(--green);border-radius:50%;font-size:12px;width:26px;height:26px}.optional{font-size:11px;color:#657265;font-weight:400;margin-left:auto}label{display:block;font-size:13px;font-weight:700;margin:14px 0 6px}.required{font-size:10px;color:#805014;margin-left:6px}.hint{font-size:12px;color:#5d6b63;margin:6px 0 10px}input,textarea{width:100%;border:1px solid #b6c5bb;border-radius:8px;background:#fcfdfa;padding:10px 12px;color:#253b36}textarea{resize:vertical;min-height:80px;font-size:14px}input{max-width:150px}::placeholder{color:#748177}.field-footer{display:flex;justify-content:space-between;font-size:11px;color:#56675c;margin:5px 0 0}.fields{display:grid;grid-template-columns:1fr 1fr;gap:16px}.actions{display:flex;gap:10px}.actions button{flex:1;padding:14px 10px}.primary{background:var(--green);border-color:var(--green);color:white}.primary:hover{background:#184d3c}.primary span{margin-left:15px}.privacy{font-size:11px;color:#5b6c60;margin:18px 0 3px}.text-button{font-size:12px;padding:4px 0;border:0;text-decoration:underline;background:transparent}.result-panel{position:sticky;top:20px;min-height:540px;padding:28px;overflow:hidden}.result-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.result-heading h2{font-size:21px;margin:0}.result-heading button{white-space:nowrap;font-size:12px}#status{font-size:12px;color:#5b6b62;margin:20px 0}#error,.notice{background:#fff2e8;color:#8d3419;padding:14px;border:1px solid #cd987c;border-radius:8px;font-size:14px;margin-bottom:16px}.empty{text-align:center;padding:66px 10px;color:#64766a}.empty>span{font-size:64px;color:#9cae97}.empty h3{font-size:15px;font-weight:500}.empty p{font-size:12px}.board{background:#e9f0e7;color:#385a41;border:1px solid #c7d7c4;border-radius:6px;text-align:center;max-width:300px;margin:24px auto;font-size:13px;padding:5px;letter-spacing:.3em}.seat-scroll{overflow-x:auto;padding:4px 4px 12px}.seat-grid{display:grid;grid-template-columns:repeat(var(--cols),minmax(76px,1fr));gap:9px}.seat{border:1px solid #ccd8ce;border-radius:8px;min-height:86px;text-align:center;padding:9px 5px;background:#f7faf5;overflow-wrap:anywhere}.seat small{display:block;color:#5c6e62;font-size:10px}.seat strong{display:block;font-size:13px;margin:5px 0;font-weight:600}.seat .tag{font-size:10px;display:block;color:#496039}.seat.vacant{background:white;border-style:dashed;color:#687269}.group-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px}.group{border:1px solid var(--border);border-radius:10px;padding:16px;background:#f7faf5;break-inside:avoid}.group h3{font-size:14px;margin:0 0 10px;color:var(--green)}.group ul{margin:0;padding-left:22px;overflow-wrap:anywhere;font-size:14px}.result-note{font-size:11px;color:#627064;margin-top:16px}footer{max-width:1216px;border-top:1px solid var(--border);margin:auto;padding:24px 0;font-size:13px;font-weight:700;display:flex;justify-content:space-between;gap:12px}footer span{font-size:11px;font-weight:400;color:#647368}[hidden]{display:none!important}
@media(max-width:900px){.workspace{grid-template-columns:320px minmax(0,1fr);gap:16px}.card,.result-panel{padding:20px}.result-heading{flex-wrap:wrap}.result-panel{position:static}}
@media(max-width:700px){.header{padding:18px 20px}.brand{font-size:18px}main{padding:0 16px 32px}.intro{padding:30px 4px}.workspace{grid-template-columns:1fr}.result-panel{min-height:380px}.empty{padding:30px 0}.actions{position:static}footer{margin:0 20px;flex-direction:column}.badge{font-size:10px}.seat-grid{gap:6px}}
@media print{@page{size:A4 landscape;margin:12mm}body{background:white;color:black}.header,.intro,form,footer,.skip-link,#print,#status,#error,.result-heading .eyebrow{display:none!important}main{max-width:none;padding:0}.workspace{display:block}.result-panel{position:static;border:0;box-shadow:none;padding:0;margin:0;min-height:0;overflow:visible}.result-heading h2{font-size:20px}.seat-scroll{overflow:visible;padding:0}.seat-grid{grid-template-columns:repeat(var(--cols),minmax(0,1fr));gap:5px}.seat{break-inside:avoid;min-height:65px;padding:5px 2px}.seat strong{font-size:11px}.board{margin:12px auto}.group-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.result-note{color:black}}

/* Public information pages share the tool's typography and keyboard focus. */
.intro-subtitle{display:block;font-size:clamp(16px,2.5vw,22px);margin-top:8px;font-weight:500}
.intro-links,.site-footer nav{display:flex;flex-wrap:wrap;gap:8px 20px}
.intro-links{margin-top:18px;font-size:13px}
.intro-links a,.site-footer a{display:inline-flex;align-items:center;min-height:44px;text-underline-offset:4px}
.info-section{margin-top:28px;scroll-margin-top:20px;font-size:14px}
.info-section h2{font-size:22px;line-height:1.5}
.info-section p,.legal-document p{line-height:1.9}
.guide-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;padding-left:24px;margin:24px 0}
.guide-steps li{padding-left:4px}.guide-steps li::marker{font-weight:700;color:var(--green)}
.guide-steps h3{font-size:16px;margin:0 0 8px}.guide-steps p{margin:0}
.info-section details{border-top:1px solid var(--border);padding:6px 0}
.info-section summary{cursor:pointer;padding:14px 4px;font-weight:700}
.info-section details p{margin:4px 4px 16px}
.site-footer{flex-wrap:wrap;padding:24px 16px}.site-footer>div>span{display:block}
.site-footer nav{font-size:12px}.site-footer a[aria-current="page"]{font-weight:800;text-decoration-thickness:2px}
.document-main{max-width:900px;padding-top:36px}.legal-document{padding:32px;overflow-wrap:anywhere}
.legal-document h1{font-size:clamp(24px,4vw,32px)}.legal-document h2{font-size:18px;margin:28px 0 12px}
.legal-document li{margin:8px 0}.back-link{margin-top:32px}.back-link a{display:inline-block;padding:10px 0}
#tool{scroll-margin-top:20px}.workspace>*{min-width:0}
@media(max-width:700px){.guide-steps{grid-template-columns:1fr;gap:20px}.info-section h2{font-size:19px}.document-main{padding-top:24px}.legal-document{padding:20px}.site-footer{padding:20px 0}textarea{font-size:16px}}
@media print{.info-section{display:none!important}.document-main{max-width:none;padding:0}.legal-document{border:0;box-shadow:none;padding:0}.legal-document h2{break-after:avoid}.back-link{display:none}}