:root{--blue:#2c5f7c;--amber:#e0a03a;--ink:#23292d;--muted:#687984;--line:#dae3e8;--bg:#f1f5f7;--white:#fff;font-family:Inter,Arial,sans-serif;color:var(--ink);font-size:16px}*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,select,textarea{font:inherit}button,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 17px;border:1px solid var(--line);border-radius:7px;background:white;color:var(--ink);cursor:pointer;text-decoration:none;font-size:14px;font-weight:600}button:hover,.button:hover{background:#edf3f6;border-color:#9ab3c1}button:disabled{opacity:.45;cursor:not-allowed}.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.primary:hover{background:#204b65}.amber{background:var(--amber);border-color:var(--amber);color:#222}.danger{color:#ad3434}.small{padding:7px 10px}input,select,textarea{padding:10px 11px;border:1px solid #bdccd4;border-radius:6px;background:#fff;color:var(--ink);min-width:0;width:100%}input[type=checkbox]{width:18px;height:18px;accent-color:var(--blue)}input[type=color]{height:42px;padding:4px}label{display:grid;gap:7px;font-size:14px;font-weight:600;margin:14px 0}label.check{display:flex;align-items:center;font-weight:400}.hint,small{color:var(--muted);font-size:13px;line-height:1.5}h1{font-size:30px;letter-spacing:-1px;margin:0 0 10px}h2{font-size:22px;margin:0 0 15px}h3{font-size:16px;margin:0 0 13px}p{line-height:1.6}.topbar{height:84px;padding:16px 32px;display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line);gap:16px}.brand{width:235px;height:auto}.nav{display:flex;align-items:center;gap:9px}.nav button{border:0;background:transparent}.nav button.active{color:var(--blue);background:#eaf1f5}.avatar{height:35px;width:35px;border-radius:50%;display:grid;place-items:center;background:#eaf1f5;color:var(--blue);font-weight:bold}.container{max-width:1320px;margin:40px auto;padding:0 32px}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:2px;color:var(--blue);font-weight:700;margin:0 0 12px}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.between{justify-content:space-between}.hero{margin-bottom:30px}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.card,.panel{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}.card-cover{height:240px;background:#dce7ed;display:flex;align-items:center;justify-content:center;padding:18px;cursor:pointer}.card-cover img{max-height:100%;max-width:90%;box-shadow:3px 7px 16px #29495a30}.card-cover .empty-book{font-size:62px;color:#8facbc}.card-body{padding:22px}.card-body h2{font-size:19px;margin-bottom:5px}.card-body .row{margin-top:20px}.panel{padding:25px}.empty{text-align:center;padding:70px 25px;border:1px dashed #b6c9d3;border-radius:10px}.empty h2{margin:15px}.login{max-width:450px;margin:10vh auto;background:#fff;border:1px solid var(--line);border-radius:12px;padding:38px}.login .brand{width:100%;margin-bottom:35px}.login button[type=submit]{width:100%;margin-top:14px}.error{background:#ffefec;border:1px solid #e9c1b9;padding:12px;color:#9a3025;border-radius:6px;font-size:14px}.editor-head{padding:20px 26px;background:white;border-bottom:1px solid var(--line)}.editor-head h1{font-size:23px;margin:0}.save-state{font-size:12px;color:var(--muted)}.workspace{display:grid;grid-template-columns:220px minmax(300px,1fr) 310px;height:calc(100vh - 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