:root{--bg:#f4f7fa;--card:#fff;--tx:#0f172a;--mu:#64748b;--bd:#e2e8f0;--pri:#0e7490;--navy:#183153;--ok:#15803d;--okb:#dcfce7;--bad:#b91c1c;--badb:#fee2e2;--inp:#fff2c9;color-scheme:light;box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0b1220;--card:#131c2e;--tx:#e5edf7;--mu:#94a3b8;--bd:#25324a;--pri:#22b8d6;--navy:#0f1d36;--ok:#4ade80;--okb:#12351f;--bad:#f87171;--badb:#3b1616;--inp:#2b2616;color-scheme:dark}}html,body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.4 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}*{box-sizing:border-box}header{background:var(--navy);color:#fff;padding:14px 16px;font-weight:700;font-size:18px;position:sticky;top:0;z-index:5}header small{display:block;font-weight:400;opacity:.8;font-size:12px}main{max-width:640px;margin:0 auto;padding:12px 12px 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var(--pri);outline-offset:2px}@media(max-width:380px){input,select{font-size:16px;padding:10px}th,td{padding:8px 2px;font-size:12px}.card{padding:10px}}@media print{html,body{background:#fff;color:#000}header,nav,#school-bar,.no-print,.toast{display:none!important}main{max-width:none;padding:0}.card{break-inside:avoid;border-color:#ccc}.print-title{display:block}select{appearance:none;border:0;background:#fff;color:#000}th,.mu,h2{color:#333}.badge{background:none!important}}@page{size:A4;margin:12mm}@media print{:root,:root:not([data-theme=light]){--bg:#fff;--card:#fff;--tx:#000;--mu:#333;--bd:#bbb;--ok:#166534;--bad:#991b1b;color-scheme:light}.card{background:#fff;color:#000}thead{display:table-header-group}tr{break-inside:avoid}}