:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--brand-primary: #0a3b4c;--brand-primary-700:#084052;--brand-accent: #18a0b9;--brand-bg: #f5f7fa;--brand-card: #ffffff;--brand-text: #16222b;--brand-muted: #6b7a89;--brand-border: #e6edf2;--radius: 12px;--shadow: 0 6px 20px rgba(10, 59, 76, .08)}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans;color:var(--brand-text);background:var(--brand-bg)}.topbar{background:var(--brand-primary);color:#fff;padding:14px 20px;display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:10}.logo{width:38px;height:38px;border-radius:8px;background:#fff1;display:grid;place-items:center;font-weight:700;letter-spacing:.5px}.title{font-weight:700;font-size:18px}.subtle{opacity:.85;font-weight:500}.wrap{max-width:1100px;margin:24px auto;padding:0 16px}.tabs{background:var(--brand-card);border:1px solid var(--brand-border);border-radius:var(--radius);box-shadow:var(--shadow)}.tabbar{display:flex;border-bottom:1px solid var(--brand-border);background:linear-gradient(#fff,#fafbfd);border-top-left-radius:var(--radius);border-top-right-radius:var(--radius);overflow:auto}.tabbar button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background:transparent;padding:14px 18px;cursor:pointer;font-weight:600;color:var(--brand-muted);border-bottom:2px solid transparent}.tabbar button.active{color:var(--brand-primary);border-bottom:2px solid var(--brand-accent)}.panel{padding:18px;display:none}.panel.active{display:block}.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media (max-width: 980px){.grid{grid-template-columns:1fr}}.card{background:#fff;border:1px solid var(--brand-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}label{font-size:13px;color:var(--brand-muted);font-weight:600}textarea,select,input[type=file]{width:100%;margin-top:8px;padding:10px 12px;border:1px solid var(--brand-border);border-radius:10px;outline:none;font-size:14px;background:#fff}textarea{min-height:100px;resize:vertical}.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.hint{font-size:12px;color:var(--brand-muted);margin-top:4px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--brand-accent);color:#fff;border:0;border-radius:10px;padding:11px 14px;cursor:pointer;font-weight:700;width:100%}.btn:hover{background:#1393aa}#answer{white-space:pre-wrap;background:#fcfeff;border:1px dashed var(--brand-border);border-radius:10px;padding:14px;min-height:160px;max-height:55vh;overflow-y:auto;-webkit-user-select:text;user-select:text}#log{font-size:12px;color:var(--brand-muted);margin-top:8px}.kicker{font-size:12px;color:var(--brand-muted);margin-bottom:6px}.guide h3{margin:10px 0 6px}.guide .pill{display:inline-block;padding:6px 10px;background:#eef7fa;border:1px solid var(--brand-border);border-radius:999px;margin:4px 6px 0 0;font-size:12px}.guide .do{border-color:#cfe9d6;background:#effaf3}.guide .dont{border-color:#f5d2d2;background:#fff2f2}.kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,Liberation Mono,monospace;background:#f1f5f9;border:1px solid #e2e8f0;border-radius:6px;padding:2px 6px}footer{text-align:center;color:var(--brand-muted);font-size:12px;margin:18px 0}.login-button{display:flex;align-items:center;gap:.5rem;background-color:#000;color:#fff}.logout-button{max-height:3vh;margin-top:-30px;margin-left:auto;margin-right:1vw;color:#fff;background-color:transparent;border:none;outline:none!important;box-shadow:none!important;font-size:1.75rem}.banner-div{width:100%;height:5vh;min-height:50px;top:0;left:0;position:fixed}.banner{width:100%;background-color:#054165;height:5vh;min-height:50px;display:flex;justify-content:space-between}.banner-logo{height:3.75vh;min-height:40px;width:5.2vw;min-width:125px;margin-top:.7vh;margin-left:1vw}