:root{font-family:"Segoe UI","Microsoft YaHei",system-ui,sans-serif;color:#19352f;background:#f5f4ed}*{box-sizing:border-box}body{margin:0}.page{max-width:960px;margin:0 auto;padding:40px 24px 80px}.back{color:#317153;text-decoration:none}.back:hover{text-decoration:underline}.eyebrow{margin-top:70px;color:#438469;font-size:12px;font-weight:700;letter-spacing:.2em}h1{font-size:clamp(34px,5vw,54px);line-height:1.25;margin:16px 0}p{line-height:1.8;color:#60766c}.button{display:inline-block;background:#286a4e;color:white;padding:11px 20px;border-radius:8px;text-decoration:none;margin-top:15px}.button:hover{background:#1d563d}.card{background:white;border:1px solid #d4dfd5;border-radius:12px;padding:20px;margin:12px 0}.card h2{margin:0 0 8px;font-size:20px}.card p{margin:0}.status{font-size:13px;color:#667e71}.lesson-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin-top:30px}.lesson-grid button{font:inherit;text-align:left;background:white;border:1px solid #d4dfd5;border-radius:8px;padding:14px;cursor:pointer;color:#19352f}.lesson-grid button:hover,.lesson-grid button:focus-visible{border-color:#378660;outline:2px solid #b3d8bc}.lesson-grid button span{display:block;color:#7b8f82;font-size:12px}.reader{margin-top:30px;white-space:pre-wrap;line-height:1.9;font-size:16px;background:white;border:1px solid #d4dfd5;border-radius:12px;padding:24px}.notice{padding:14px 18px;background:#fff8e3;border:1px solid #e2ce87;border-radius:8px;color:#715722}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}.actions a{color:#286a4e}@media(max-width:600px){.page{padding:25px 16px 60px}.eyebrow{margin-top:45px}.reader{padding:16px}}