body{margin:0;padding:0;background:#eee}button{margin:2px;padding:6px 12px;cursor:pointer}.page{display:flex;min-height:100vh;background:#0f1115;color:#fff}.sidebar{width:320px;padding:14px;background:#151823;display:flex;flex-direction:column;gap:10px}.content{flex:1;display:flex;justify-content:center;align-items:center;padding:14px}.board-wrap{width:min(76vh,720px)}.sb-title{font-weight:800;font-size:18px;margin-bottom:6px}.sb-btn{background:#23283a;border:0;color:#fff;padding:10px 12px;border-radius:10px;cursor:pointer;text-align:left}.sb-btn:hover{background:#2b3150}.sb-primary{background:#4caf50;border:0;color:#fff;padding:10px 12px;border-radius:10px;cursor:pointer;font-weight:700}.sb-section{background:#10131d;padding:12px;border-radius:12px;display:flex;flex-direction:column;gap:8px;margin-top:8px}.sb-section-title{font-weight:700;opacity:.9}.sb-label{font-size:12px;opacity:.75;margin-top:6px}.sb-input{background:#1c2234;border:1px solid #2c3552;color:#fff;padding:8px 10px;border-radius:10px}.sb-row{display:flex;gap:10px;align-items:center;font-size:14px;opacity:.9}.sb-error{color:#ff7b7b;font-size:13px}.sb-link{color:#8ab4ff;text-decoration:none;font-size:13px;margin-top:6px}.sb-kv{display:flex;justify-content:space-between;font-size:13px;opacity:.9}.card{background:#151823;border-radius:14px;padding:18px;max-width:560px}.card-title{font-weight:800;font-size:18px}.card-text{opacity:.8;margin-top:8px;line-height:1.4}