:root{--primary:#2563eb;--bg:#f5f7fb;--ink:#172033;--muted:#7b8497;--line:#e7eaf0;--white:#fff;--danger:#dc2626}*{box-sizing:border-box}body{margin:0;font-family:Tahoma,Arial,sans-serif;background:var(--bg);color:var(--ink)}button,input,textarea,select{font:inherit}button{cursor:pointer}.layout{min-height:100vh}aside{position:fixed;right:0;top:0;bottom:0;width:250px;background:#101827;color:#dbe4f4;padding:24px 16px;display:flex;flex-direction:column;z-index:5}.brand{display:flex;gap:12px;align-items:center;color:#fff;text-decoration:none;padding:0 10px 27px}.brand>span{display:grid;place-items:center;background:var(--primary);width:42px;height:42px;border-radius:12px;font-size:24px}.brand b,.brand small{display:block}.brand small{color:#8491a6;margin-top:5px;font-size:11px}nav{display:grid;gap:6px}nav button{background:transparent;border:0;color:#95a2b7;text-align:right;padding:13px 15px;border-radius:10px;display:flex;gap:12px}nav button.active,nav 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ul{color:#586174;line-height:2;font-size:12px;padding-right:18px;min-height:100px}.plan footer{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px}.form-card{display:grid;gap:14px}.form-card h3{margin:0 0 5px}.form-card label{font-size:12px;color:#515b6e;display:grid;gap:7px}.form-card textarea{min-height:70px;resize:vertical}.color-row{display:flex;gap:8px}.color-row input[type=color]{width:52px;padding:3px}.color-row input:last-child{flex:1}.switch{display:flex!important;align-items:center;gap:10px!important}.switch input{width:18px;height:18px}.preview{text-align:center;display:grid;place-items:center;align-content:center;min-height:300px}.preview #logoPreview{font-size:42px;color:var(--primary)}.preview h2{font-size:27px}.preview button{background:var(--primary);border:0;color:white;padding:10px 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