:root{--red:#ce1427;--ink:#191b20;--muted:#65676e}*{box-sizing:border-box}body{margin:0;background:#f6f5f2;color:var(--ink);font:16px/1.6 Arial,sans-serif}header{display:flex;align-items:center;gap:24px;padding:12px max(20px,calc((100vw - 1100px)/2));background:#fff;border-bottom:1px solid #ddd}header img{width:180px;height:auto;display:block}header form{margin-left:auto}main{max-width:1100px;margin:auto;padding:35px 20px;min-height:65vh}h1{font-size:clamp(30px,4vw,45px);line-height:1.15}h2{font-size:23px}section{padding:24px;background:white;border:1px solid #e1dfdb;border-radius:12px;margin-bottom:24px}.login{max-width:530px;margin:20px auto}.grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}label{display:block;font-weight:bold;margin:14px 0}input,select{display:block;width:100%;padding:12px;border:1px solid #bbb;border-radius:6px;font:inherit;margin-top:5px}button,.button{display:inline-block;background:var(--red);color:white;padding:12px 18px;font:700 15px Arial;border:1px solid var(--red);border-radius:6px;cursor:pointer;text-decoration:none}.secondary{background:white;color:var(--ink);border-color:#bbb}a{color:#b91c2d;text-underline-offset:3px}small,.muted{display:block;color:var(--muted);font-size:13px}.tag{font-weight:bold;letter-spacing:1px;color:var(--red);font-size:12px}.notice{padding:16px;background:#fff1d7;border-left:4px solid #a46800;margin-bottom:20px}.file,.student-link{display:block;padding:16px 0;border-bottom:1px solid #ddd}.file a{margin-top:10px}.file form{max-width:400px}form+form{margin-top:16px}footer{text-align:center;background:var(--ink);color:white;padding:25px}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #b77200;outline-offset:3px}@media(max-width:700px){.grid{grid-template-columns:1fr}header{gap:10px}header img{width:130px}header span{font-size:13px}section{padding:18px}}