:root{--bg:#f5f7fb;--panel:#fff;--text:#172033;--muted:#667085;--line:#e5e7eb;--blue:#2563eb;--purple:#7c3aed}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif;background:var(--bg);color:var(--text)}.shell{max-width:1100px;margin:auto;padding:28px}header{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:22px}.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--blue);font-weight:700}h1{margin:6px 0 8px;font-size:36px}header p{margin:0;color:var(--muted)}.status{background:#eef2ff;padding:10px 14px;border-radius:999px;font-size:13px;color:#4338ca}.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.tab{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 16px;cursor:pointer}.tab.active{background:#111827;color:#fff}.panel{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 12px 28px rgba(15,23,42,.05);margin-bottom:18px}.section-title{display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:20px;margin-bottom:14px}.tag{font-size:12px;background:#eef2ff;color:#4338ca;padding:6px 9px;border-radius:999px}textarea{width:100%;min-height:150px;border:1px solid var(--line);border-radius:14px;padding:16px;font-size:17px;resize:vertical;outline:none}textarea:focus{border-color:#93c5fd;box-shadow:0 0 0 3px #dbeafe}.actions{display:flex;gap:10px;margin-top:12px}.actions button,.mini-actions button,.feedback button{border:0;border-radius:12px;padding:10px 14px;cursor:pointer}.primary{background:var(--blue);color:#fff;font-weight:700}.secondary{background:#eef2ff;color:#3730a3}.hint{margin-top:12px;color:var(--muted);font-size:13px}.hidden{display:none}.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.card{border:1px solid var(--line);border-radius:16px;padding:16px;margin-bottom:14px}.accent{background:#faf5ff;border-color:#ddd6fe}.label{font-size:13px;color:var(--muted);margin-bottom:8px}.english{font-size:22px;font-weight:700;line-height:1.4}.content{font-size:17px;line-height:1.7}.mini-actions{display:flex;gap:8px;margin-top:12px}.mini-actions button{background:#f3f4f6}.feedback{display:flex;gap:8px;flex-wrap:wrap}.feedback button{background:#f3f4f6}.dashboard{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.stat b{display:block;font-size:26px}.stat span{font-size:13px;color:var(--muted)}@media(max-width:760px){.shell{padding:16px}header{display:block}h1{font-size:30px}.status{display:inline-block;margin-top:14px}.grid,.dashboard{grid-template-columns:1fr}.actions{flex-direction:column}}