:root{color-scheme:light;--ab-bg:#f1f5fb;--ab-paper:#fff;--ab-ink:#20334b;--ab-muted:#596b80;--ab-rule:#dce5f0;--ab-blue:#245ad5;--ab-navy:#172d50;--ab-soft:#eaf0ff}
body.academic-blue{box-sizing:border-box;font-family:"Yu Gothic UI","Meiryo",system-ui,sans-serif;font-size:15px;line-height:1.65;color:var(--ab-ink);background:var(--ab-bg);margin:0;padding:0;max-width:none;min-height:100vh;box-shadow:none}
.academic-blue *{box-sizing:border-box}
.academic-blue a{color:var(--ab-blue);text-underline-offset:4px;overflow-wrap:anywhere}
.academic-blue a:hover{text-decoration-thickness:2px}
.academic-blue .skip-link{position:absolute;top:8px;left:12px;transform:translateY(-160%);z-index:5;background:#fff;padding:10px 16px;border-radius:8px}
.academic-blue .skip-link:focus{transform:none}
.academic-blue :focus-visible{outline:3px solid #7198ef;outline-offset:3px}
.academic-blue .app-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:17px 28px;background:var(--ab-paper);border-bottom:1px solid var(--ab-rule);box-shadow:0 3px 14px #172d5008}
.academic-blue .app-brand{display:flex;align-items:center;gap:12px;color:var(--ab-ink);font-size:17px;font-weight:700;letter-spacing:.03em;text-decoration:none}
.academic-blue .brand-mark{display:grid;place-items:center;width:36px;height:36px;background:var(--ab-blue);color:#fff;border-radius:11px;font:28px Georgia,serif}
.academic-blue .app-role{font-size:12px;color:var(--ab-muted);padding:5px 12px;border:1px solid var(--ab-rule);border-radius:24px}
.academic-blue .app-actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-wrap:wrap}
.academic-blue .teacher-login-menu{display:inline-flex;align-items:center;min-height:38px;padding:6px 14px;border:1px solid var(--ab-blue);border-radius:20px;background:#fff;color:var(--ab-blue);font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap}
.academic-blue .teacher-login-menu:hover{background:var(--ab-soft)}
.academic-blue .header-logout{margin:0;padding:0;border:0;background:none;box-shadow:none;max-width:none}
.academic-blue .header-logout input{display:none}
.academic-blue .header-logout button{min-height:36px;padding:6px 13px;margin:0;border-radius:20px;font-size:12px;background:var(--ab-navy);border-color:var(--ab-navy);white-space:nowrap}
.academic-blue .header-logout button:hover{background:#0f213f;border-color:#0f213f}
.academic-blue .app-layout{display:grid;grid-template-columns:210px minmax(0,1fr);min-height:calc(100vh - 72px)}
.academic-blue .app-sidebar{background:var(--ab-navy);color:#eaf1ff;padding:30px 14px;margin:0;display:flex;flex-direction:column;gap:7px;align-items:stretch}
.academic-blue .sidebar-caption{font-size:10px;letter-spacing:.18em;color:#c5d4ec;margin:0 14px 18px}
.academic-blue .app-sidebar a{display:flex;align-items:center;gap:10px;color:#eaf1ff;text-decoration:none;padding:11px 12px;border-radius:9px;font-size:13px;min-height:44px}
.academic-blue .app-sidebar a:hover{background:#ffffff12}
.academic-blue .app-sidebar a[aria-current]{background:#ffffff20;color:#fff;font-weight:700}
.academic-blue .nav-marker{font-size:10px;font-variant-numeric:tabular-nums;color:#afc5ea;flex:0 0 17px}
.academic-blue .app-main{min-width:0;width:100%;max-width:1440px;margin:0 auto;padding:32px clamp(18px,3vw,46px) 22px;background:none;border:none;box-shadow:none}
.academic-blue .page-heading{margin:0 0 25px}
.academic-blue .page-eyebrow{font-size:11px;letter-spacing:.12em;color:var(--ab-blue);margin:0 0 8px}
.academic-blue h1{font-size:clamp(24px,2.7vw,32px);line-height:1.4;margin:0;font-weight:700;letter-spacing:.025em;overflow-wrap:anywhere}
.academic-blue h2{font-size:20px;margin:0 0 20px;line-height:1.5}
.academic-blue h3{font-size:17px;line-height:1.5}
.academic-blue .app-content{min-width:0}
.academic-blue .app-content>section,.academic-blue .endpoint-radars>section{background:var(--ab-paper);border:1px solid var(--ab-rule);border-radius:16px;padding:24px;margin:24px 0;box-shadow:0 4px 18px #20334b05;min-width:0}
.academic-blue .app-content>form{background:var(--ab-paper);border:1px solid var(--ab-rule);border-radius:14px;padding:20px 24px;margin:18px 0;max-width:none}
.academic-blue label{font-size:14px;font-weight:600;display:block;margin:12px 0}
.academic-blue input,.academic-blue select,.academic-blue textarea{font:inherit;color:var(--ab-ink);background:#fff;border:1px solid #aabbd0;border-radius:8px;padding:10px 12px;max-width:100%;min-width:0;box-shadow:0 1px 2px #20334b04}
.academic-blue input:not([type=hidden]):not([type=checkbox]):not([type=radio]),.academic-blue select{display:block;width:min(100%,32rem);margin-top:5px}
.academic-blue input[type=checkbox],.academic-blue input[type=radio]{display:inline-block;width:auto;margin:0 6px 0 0;accent-color:var(--ab-blue)}
.academic-blue input[type=hidden]{display:none}
.academic-blue textarea{width:100%;min-height:7rem;line-height:1.7}
.academic-blue button{display:inline-block;font:inherit;font-weight:600;font-size:14px;background:var(--ab-blue);color:#fff;border:1px solid var(--ab-blue);padding:10px 17px;border-radius:8px;cursor:pointer;min-height:44px;max-width:100%;white-space:normal;line-height:1.5}
.academic-blue button:hover{background:#194ab9;border-color:#194ab9}
.academic-blue button:disabled{cursor:not-allowed;background:#d8e1ef;border-color:#c7d2e2;color:#52657e}
.academic-blue fieldset{min-width:0;border:1px solid var(--ab-rule);border-radius:12px;background:#fff;padding:20px;margin:18px 0}
.academic-blue legend{font-weight:700;padding:0 7px;max-width:100%;overflow-wrap:anywhere}
.academic-blue table{border-collapse:separate;border-spacing:0;width:100%;margin:18px 0;background:#fff;border:1px solid var(--ab-rule);border-radius:10px;font-size:14px}
.academic-blue th,.academic-blue td{padding:12px 14px;border:0;border-bottom:1px solid var(--ab-rule);text-align:left;vertical-align:top;overflow-wrap:anywhere}
.academic-blue th{color:#344e70;background:#f2f6fc;font-weight:600}
.academic-blue tr:last-child td{border-bottom:0}
.academic-blue tbody tr:hover td{background:#f8faff}
.academic-blue table form{margin:0}
.academic-blue table input,.academic-blue table select{min-width:7rem}
.academic-blue code,.academic-blue pre{white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}
.academic-blue pre{background:var(--ab-soft);padding:18px;border-radius:10px}
.academic-blue dt{font-weight:600}
.academic-blue dd{overflow-wrap:anywhere}
.academic-blue .notice,.academic-blue .help{background:#eaf1ff;color:#345075;border:1px solid #d8e4fc;border-radius:10px;padding:13px 16px;font-size:13px;line-height:1.7}
.academic-blue [role=alert]{background:#fff2ef;color:#842f26;border:1px solid #edb9b0;border-left:4px solid #b74638;border-radius:8px;padding:15px 18px}
.academic-blue .suppressed{color:var(--ab-muted)}
.academic-blue .filters{background:#fff;border:1px solid var(--ab-rule);border-radius:12px;padding:18px}
.academic-blue .filters label{flex:1 1 150px;min-width:0}
.academic-blue .analysis-links{gap:12px}
.academic-blue .analysis-links a{display:inline-block;background:#fff;border:1px solid var(--ab-rule);border-radius:8px;padding:8px 13px;text-decoration:none;font-size:13px}
.academic-blue .analysis-links a:hover{background:var(--ab-soft);border-color:#b6c9f4}
.academic-blue .enrollment-switch{display:flex;align-items:end;gap:12px;flex-wrap:wrap}
.academic-blue .enrollment-switch label{flex:1 1 20rem;margin:0}
.academic-blue .enrollment-switch button{flex:0 0 auto}
.academic-blue .endpoint-radars{gap:22px}
.academic-blue .endpoint-radars>section{margin:0;padding:22px 12px 16px}
.academic-blue .endpoint-radars h2{padding:0 10px;font-size:17px;color:var(--ab-ink)}
.academic-blue .radar-own{fill:#2865d61c;stroke:#2865d6;stroke-width:2}
.academic-blue .radar-group{fill:none;stroke:#a55e87;stroke-width:2;stroke-dasharray:4 3}
.academic-blue .radar-grid{stroke:#d6e0ee}
.academic-blue .radar text{fill:#516580;font-size:12px}
.academic-blue .radar-wrap>p{text-align:center}
.academic-blue .legend:before{background:#2865d6}
.academic-blue .legend.group:before{background:#a55e87}
.academic-blue .role-card,.academic-blue .comparison{background:#f8faff;border:1px solid var(--ab-rule);border-radius:12px}
.academic-blue .grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,18rem),1fr))}
.academic-blue article{border-color:var(--ab-rule);border-radius:12px;background:#fff}
.academic-blue .middle-comments{background:#fff;border-color:var(--ab-rule);border-radius:12px}
.academic-blue .middle-table{border-collapse:separate}
.academic-blue .middle-table th,.academic-blue .middle-table td{border:0;border-bottom:1px solid var(--ab-rule)}
.academic-blue .middle-cross th,.academic-blue .middle-cross td{text-align:center}
.academic-blue .middle-cross{min-width:76rem}
.academic-blue .app-footer{font-size:11px;color:var(--ab-muted);margin-top:34px;padding-top:18px;border-top:1px solid var(--ab-rule)}
.academic-blue.role-guest .app-content{max-width:620px}
.academic-blue.role-guest .app-content>p>a{display:inline-block;padding:8px 0}
.academic-blue.page-dashboard .app-content>p:has(>a:only-child){background:#fff;border:1px solid var(--ab-rule);border-radius:12px;margin:12px 0;box-shadow:0 3px 14px #20334b04}
.academic-blue.page-dashboard .app-content>p>a:only-child{display:block;padding:18px 22px;text-decoration:none;font-weight:600}
.academic-blue.page-dashboard .app-content>p.dashboard-primary-action:has(>a:only-child){background:var(--ab-blue);border-color:var(--ab-blue)}
.academic-blue.page-dashboard .app-content>p.dashboard-primary-action>a{color:#fff;font-weight:700}
.academic-blue.page-dashboard .app-content>p.dashboard-primary-action:hover{background:#194ab9;border-color:#194ab9}
.academic-blue .submission-actions{min-width:10rem}
.academic-blue .submission-action{display:flex;align-items:center;justify-content:center;min-height:44px;margin:5px 0;padding:9px 13px;border:1px solid var(--ab-blue);border-radius:8px;text-align:center;text-decoration:none;font-weight:700}
.academic-blue .submission-action.primary{color:#fff;background:var(--ab-blue)}
.academic-blue .submission-action.primary:hover{color:#fff;background:#194ab9;border-color:#194ab9}
.academic-blue .submission-action.secondary{color:var(--ab-blue);background:#fff}
.academic-blue .submission-action.secondary:hover{background:var(--ab-soft)}
.academic-blue .answer-section{border:1px solid #c9d8ec;border-radius:14px;background:#f7faff;padding:22px;margin:24px 0}
.academic-blue .answer-section>h2{margin-bottom:8px;color:var(--ab-navy)}
.academic-blue .answer-section-intro{margin:0 0 20px;padding:13px 16px;border-radius:6px;background:var(--ab-soft);font-weight:700}
.academic-blue .answer-section fieldset{background:#fff}
.academic-blue .first-lesson-targets{margin:0 0 20px;padding:15px 17px;border:1px solid #c7d7f4;border-radius:10px;background:#fff}
.academic-blue .first-lesson-targets h3{margin:0 0 10px}
.academic-blue .first-lesson-targets dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0}
.academic-blue .first-lesson-targets dl>div{padding:10px 12px;border-radius:8px;background:var(--ab-soft)}
.academic-blue .first-lesson-targets dt{margin:0;color:#45617f;font-size:12px}
.academic-blue .first-lesson-targets dd{margin:2px 0 0;font-weight:700}
.academic-blue .submission-draft,.academic-blue .submission-submit{min-width:10rem}
.academic-blue .submission-draft{background:#fff;color:var(--ab-blue);border:1px solid var(--ab-blue)}
@media(max-width:960px){.academic-blue .endpoint-radars{grid-template-columns:1fr}.academic-blue .role-grid{grid-template-columns:1fr}}
@media(max-width:760px){
 .academic-blue .app-layout{grid-template-columns:1fr}
 .academic-blue .app-sidebar{flex-direction:row;flex-wrap:wrap;padding:10px 12px;gap:4px}
 .academic-blue .sidebar-caption{display:none}
 .academic-blue .app-sidebar a{padding:8px 10px;font-size:12px}
 .academic-blue .nav-marker{display:none}
 .academic-blue .app-header{padding:13px 16px}
 .academic-blue .app-brand{font-size:15px}
 .academic-blue .app-role{font-size:11px;padding:4px 8px}
 .academic-blue .app-actions{gap:7px}
 .academic-blue .header-logout button{min-height:34px;padding:5px 10px;font-size:11px;width:auto}
 .academic-blue .app-main{padding:24px 16px}
 .academic-blue .app-content>section,.academic-blue .app-content>form{padding:18px 14px}
 .academic-blue table:not(.middle-table){display:block;overflow-x:auto}
 .academic-blue th,.academic-blue td{padding:10px}
 .academic-blue .app-content>form{display:block}
 .academic-blue .enrollment-switch button{width:100%;margin-top:12px}
 .academic-blue .app-content button{width:auto;margin:4px 0}
 .academic-blue .endpoint-radars{grid-template-columns:1fr}
}
@media(max-width:760px){
 .academic-blue table.submission-list{display:block;overflow:visible;border:0;background:transparent}
 .academic-blue .submission-list thead{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
 .academic-blue .submission-list tbody,.academic-blue .submission-list tr,.academic-blue .submission-list td{display:block;width:100%}
 .academic-blue .submission-list tr{margin:0 0 16px;border:1px solid var(--ab-rule);border-radius:12px;background:#fff;overflow:hidden;box-shadow:0 3px 14px #20334b08}
 .academic-blue .submission-list td{display:grid;grid-template-columns:minmax(5rem,30%) minmax(0,1fr);gap:10px;border-bottom:1px solid var(--ab-rule);padding:11px 13px}
 .academic-blue .submission-list td::before{content:attr(data-label);color:#344e70;font-weight:700}
 .academic-blue .submission-list .submission-actions{display:grid;grid-template-columns:minmax(0,1fr);gap:8px;min-width:0;padding:13px}
 .academic-blue .submission-actions::before{margin-bottom:1px}
 .academic-blue .submission-action{width:100%;margin:0;min-height:50px;font-size:15px}
 .academic-blue .answer-section{padding:17px 12px;margin:20px 0}
 .academic-blue .answer-section-intro{padding:12px;margin-bottom:16px}
 .academic-blue .first-lesson-targets dl{grid-template-columns:1fr}
 .academic-blue .app-content button.submission-draft,.academic-blue .app-content button.submission-submit{width:100%;min-height:50px}
}
@media(prefers-reduced-motion:no-preference){.academic-blue a,.academic-blue button{transition:background-color .15s,border-color .15s}}