:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{color:#1a1a1a;background:#f4f5f7;margin:0}button{font-family:inherit}button:focus-visible,[role=button]:focus-visible,input:focus-visible{outline-offset:2px;outline:3px solid #1b5fad}.app-shell{max-width:760px;margin:0 auto;padding:40px 20px 80px}h1{margin-bottom:8px;font-size:1.6rem}.tagline{color:#444;margin-bottom:24px;line-height:1.5}.upload-dropzone{text-align:center;cursor:pointer;background:#fff;border:2px dashed #8a8f98;border-radius:12px;padding:48px 24px;transition:border-color .15s,background .15s;display:block}.upload-dropzone.drag-over{background:#eef4fc;border-color:#1b5fad}.dropzone-headline{margin:0 0 4px;font-size:1.1rem;font-weight:600}.dropzone-sub{color:#666;margin:0}.visually-hidden-input{opacity:0;pointer-events:none;width:1px;height:1px;position:absolute;overflow:hidden}.privacy-note{color:#234a23;background:#eef7ee;border:1px solid #bfe0bf;border-radius:8px;margin-top:20px;padding:14px 16px;font-size:.92rem;line-height:1.5}.how-to{color:#333;margin-top:16px;font-size:.92rem}.how-to summary{cursor:pointer;font-weight:600}.error-message{color:#7a1f14;background:#fdecea;border:1px solid #f2b8b0;border-radius:8px;margin-top:16px;padding:12px 14px;font-size:.92rem}.success-message{color:#1f5c1f;background:#eaf6ea;border:1px solid #b9dfb9;border-radius:8px;margin-top:16px;padding:12px 14px;font-size:.92rem}.title-field{margin:20px 0;display:block}.title-field span{margin-bottom:6px;font-size:.92rem;font-weight:600;display:block}.title-field input{border:1px solid #b9bcc2;border-radius:8px;width:100%;padding:10px 12px;font-size:1rem}.summary-grid{grid-template-columns:repeat(2,1fr);gap:12px;margin:0 0 16px;display:grid}.summary-item{background:#fff;border:1px solid #dcdfe4;border-radius:10px;padding:14px 16px}.summary-item dt{color:#666;margin-bottom:4px;font-size:.82rem}.summary-item dd{margin:0;font-size:1.5rem;font-weight:700}.test-student-note{color:#555;margin:4px 0 16px;font-size:.88rem}.warnings{background:#fff8e6;border:1px solid #f0d896;border-radius:8px;margin-bottom:16px;padding:12px 16px;font-size:.9rem}.warnings ul{margin:6px 0 0;padding-left:20px}.actions{gap:12px;margin-top:8px;display:flex}.primary-button{color:#fff;cursor:pointer;background:#1b5fad;border:none;border-radius:8px;padding:12px 22px;font-size:1rem;font-weight:600}.primary-button:disabled{cursor:not-allowed;background:#8ba9c9}.secondary-button{color:#1a1a1a;cursor:pointer;background:#fff;border:1px solid #b9bcc2;border-radius:8px;padding:12px 18px;font-size:1rem}.secondary-button:disabled{color:#999;cursor:not-allowed}@media (width<=520px){.summary-grid{grid-template-columns:1fr}.actions{flex-direction:column}}