:root{font-family:Inter,"Noto Sans JP",system-ui,sans-serif;color:#172033;background:#f4f7fb}*{box-sizing:border-box}body{margin:0}header{height:64px;background:#fff;border-bottom:1px solid #e5e9f0;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100% - 1050px)/2));position:sticky;top:0;z-index:5}header strong{font-size:19px}header span{margin-left:12px;color:#7a8496;font-size:13px}header a{color:#315ee7;text-decoration:none;font-weight:700}.wrap{max-width:1050px;margin:34px auto;padding:0 20px}.card{background:#fff;border:1px solid #e4e9f1;border-radius:18px;padding:28px;margin-bottom:20px;box-shadow:0 5px 20px #23324d0a}.hero{background:linear-gradient(135deg,#fff,#f0f5ff)}.hero h1{margin:4px 0 8px;font-size:30px}.hero p{color:#697386}.eyebrow{font-size:11px!important;letter-spacing:.16em;font-weight:800;color:#315ee7!important}.grid3{display:grid;grid-template-columns:1fr 1fr 2fr;gap:14px}label{display:block;font-size:13px;font-weight:700;margin-bottom:18px}input,select,textarea{width:100%;margin-top:7px;border:1px solid #ccd4e0;border-radius:10px;padding:12px;font:inherit;background:#fff}textarea{resize:vertical;line-height:1.7}.row{display:flex;align-items:center;justify-content:space-between;color:#697386}button{border:0;border-radius:10px;padding:12px 22px;background:#315ee7;color:white;font-weight:800;cursor:pointer}button.secondary{background:#eef2ff;color:#315ee7}.prompt{background:#f7f9fc;border-left:4px solid #315ee7;padding:14px 16px;margin:-5px 0 20px;white-space:pre-wrap}.hidden{display:none}.message{font-weight:700}.ok{color:#18864b}.error{color:#c33}.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.toolbar select,.toolbar input{width:auto;margin:0}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}.stat{background:#fff;border:1px solid #e4e9f1;border-radius:14px;padding:16px}.stat b{display:block;font-size:26px;margin-top:4px}.tablewrap{overflow:auto}table{width:100%;border-collapse:collapse;background:#fff}th,td{text-align:left;padding:13px;border-bottom:1px solid #edf0f5;font-size:13px}tr.clickable{cursor:pointer}tr.clickable:hover{background:#f7f9ff}.badge{display:inline-block;border-radius:999px;padding:5px 9px;background:#fff4d6;color:#875d00;font-weight:700}.badge.done{background:#e7f8ee;color:#187a45}.modal{position:fixed;inset:0;background:#10182888;display:grid;place-items:center;padding:20px;z-index:20}.modal.hidden{display:none}.modalbox{background:#fff;width:min(850px,100%);max-height:90vh;overflow:auto;border-radius:18px;padding:26px}.essayview{white-space:pre-wrap;line-height:1.8;background:#f8fafc;padding:18px;border-radius:12px}.rubric{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.rubric input{margin-top:5px}@media(max-width:650px){.grid3,.stats,.rubric{grid-template-columns:1fr 1fr}.wrap{margin-top:20px}.card{padding:20px}header{padding:0 18px}.hero h1{font-size:25px}}
/* SushiTan classroom pages */
:root{color:#243047;background:#fff9ef}
header{height:auto;min-height:64px;gap:16px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}
header nav a{font-size:14px}header strong{color:#b45309}
.hero{background:linear-gradient(135deg,#fff,#fff1d6)}
.btn{display:inline-block;background:#315ee7;color:#fff;padding:12px 20px;border-radius:10px;text-decoration:none;font-weight:700}
button:disabled{opacity:.6;cursor:wait}label small{display:block;line-height:1.6;font-weight:400;margin-top:6px}
input[type=checkbox]{width:auto}a:focus-visible,button:focus-visible{outline:3px solid #f59e0b;outline-offset:3px}
@media(max-width:650px){header span{display:block;margin:4px 0 0}.row{gap:10px;flex-wrap:wrap}.grid3{grid-template-columns:1fr}.toolbar input,.toolbar select{max-width:100%}.modalbox{padding:18px}}