@font-face{font-family:Plex;src:url('fonts/plex-latin-400.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Plex;src:url('fonts/plex-latin-600.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:PlexThai;src:url('fonts/plex-thai-400.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:PlexThai;src:url('fonts/plex-thai-600.woff2') format('woff2');font-weight:600;font-display:swap}
:root{--ink:#1b2638;--muted:#5b6574;--blue:#183157;--line:#d6dce4}
*{box-sizing:border-box}html{font-size:17px;color:var(--ink);background:#fafafa}body{margin:0;font-family:Plex,PlexThai,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.5}button,input,select{font:inherit}button,a,select,input{-webkit-tap-highlight-color:transparent}a{color:var(--blue);text-underline-offset:3px}a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #5875ad;outline-offset:3px}[hidden]{display:none!important}
header{width:min(100% - 36px,760px);margin:0 auto;padding:22px 0 18px;display:flex;gap:14px;align-items:center;justify-content:space-between;border-bottom:2px solid var(--blue)}.brand{display:flex;gap:12px;align-items:center}.brand img{width:50px;height:50px;border-radius:4px}.brand h1{margin:0;font-size:1.35rem;font-weight:600;line-height:1.2}.brand p{margin:5px 0 0;font-size:.82rem;color:var(--muted)}main{width:min(100% - 36px,760px);margin:22px auto 32px}.quiet{border:1px solid var(--line);padding:8px 12px;min-height:44px;border-radius:4px;background:#fff;color:var(--ink);cursor:pointer}
.selectors{padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:5px}label{display:block;font-weight:600;font-size:.92rem;margin-bottom:7px}select,input{display:block;width:100%;min-height:50px;border:1px solid #b2bdcb;border-radius:4px;padding:10px 12px;background:#fff;color:var(--ink)}#assignment-control{margin-top:16px}#content h2{font-size:1.16rem;margin:26px 0 12px;font-weight:600}.pdf-list{border:1px solid var(--line);border-radius:4px;background:#fff}.pdf-row{display:flex;justify-content:space-between;gap:18px;align-items:center;padding:16px 18px;border-bottom:1px solid var(--line)}.pdf-row:last-child{border-bottom:0}.pdf-title{font-size:1rem;font-weight:600;margin:0}.pdf-meta{font-size:.78rem;color:var(--muted);margin:4px 0 0}.open-pdf{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--blue);border-radius:4px;min-height:44px;padding:8px 12px;white-space:nowrap;text-decoration:none;font-size:.9rem;font-weight:600;background:#fff;flex-shrink:0}.open-pdf:hover{background:#edf1f6}.common h2{font-size:1rem!important;color:var(--muted)}.hint{font-size:.85rem;color:var(--muted);margin:12px 0}footer{margin-top:26px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:.78rem;line-height:1.8}.skip{position:absolute;left:12px;top:-80px;background:white;z-index:5;padding:12px}.skip:focus{top:10px}
.lock-screen{min-height:100dvh;display:grid;place-items:center;padding:24px}.lock-card{width:min(100%,410px);padding:28px;border:1px solid var(--line);background:white;border-radius:6px}.lock-logo{width:58px;height:58px;display:block;margin-bottom:20px}.eyebrow{font-size:.7rem;letter-spacing:.05em;color:var(--muted)}.lock-card h1{font-size:1.6rem;margin:10px 0 6px;font-weight:600}.lock-card>p{color:var(--muted)}.password-field{display:flex;gap:8px}.password-field input{min-width:0}.password-field button{background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:4px;min-height:50px;cursor:pointer}.primary{width:100%;min-height:48px;border:1px solid var(--blue);background:var(--blue);color:white;border-radius:4px;cursor:pointer;font-weight:600}.primary:disabled{opacity:.55;cursor:wait}#lock-status{font-size:.85rem;min-height:1.4em;color:var(--muted)}#toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--blue);color:white;padding:10px 18px;border-radius:4px;max-width:calc(100% - 36px)}
@media(max-width:480px){html{font-size:16px}header{padding-top:18px}.brand h1{font-size:1.2rem}.brand img{width:42px;height:42px}.selectors{padding:16px}.pdf-row{gap:10px;padding:15px 14px}.pdf-title{font-size:.95rem}.open-pdf{font-size:.82rem;padding:8px 10px}.lock-card{padding:24px}.common .pdf-title{font-size:.9rem}}