*{box-sizing:border-box}body{margin:0;background:#f3f5f5;color:#183340;font-family:system-ui,-apple-system,"Noto Sans TC",sans-serif}header{max-width:1120px;margin:auto;padding:22px 20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-bottom:1px solid #d4dfe0}header a{color:#006962;font-weight:750;text-decoration:none}main{max-width:1080px;margin:auto;padding:24px 16px}footer{text-align:center;padding:28px 16px;font-size:14px;line-height:1.8}.login{max-width:560px;margin:24px auto;padding:30px;background:#fff;border:1px solid #d4dfe0;border-radius:16px;line-height:1.8}.login input{display:block;width:100%;padding:14px;margin:8px 0 16px;font:inherit;border:1px solid #7a9094;border-radius:8px}.login button{padding:12px 18px;font:inherit;cursor:pointer;background:#006962;color:white;border:0;border-radius:8px}a{color:#006962;overflow-wrap:anywhere}.source-figure{display:block;max-width:100%;height:auto;margin:20px auto;border:1px solid #d4dfe0}.access-period{max-width:1080px;margin:12px auto;padding:0 16px;font-size:14px}.study .stem{white-space:pre-wrap}.study select{max-width:100%}.study .feedback{line-height:1.8}#error{color:#a82020}.study .panel p,.study .panel a{overflow-wrap:anywhere}.study .grid>*{min-width:0}@media(max-width:600px){.login{padding:22px}header{font-size:14px}.study .grid{grid-template-columns:1fr}.study .sticky{gap:6px}.study .sticky button{padding:12px 9px}}