:root{--accent:#007bff;--bg:#f7fbff;--card:#fff;--muted:#6c757d}*{box-sizing:border-box}body{font-family:"Inter","Segoe UI",Arial,sans-serif;margin:0;background:var(--bg);color:#1e2a39}.header{background:linear-gradient(180deg,var(--accent),#0062d6);color:#fff;padding:18px}.header h1{font-weight:700;letter-spacing:.5px;margin-bottom:4px}.header .small{color:#fff!important;opacity:.9;font-size:13px;margin:0}.container{max-width:1100px;margin:0 auto;padding:0 16px}nav{background:#0056b3;padding:10px}nav a{color:#fff;text-decoration:none;padding:8px 12px;display:inline-block}.main{max-width:1100px;margin:20px auto;padding:0 16px}.card{background:var(--card);padding:14px;border-radius:10px;box-shadow:0 6px 18px rgba(13,40,77,.08);margin-bottom:16px}.form-row{margin-bottom:10px}label{display:block;font-weight:600;margin-bottom:6px}input,select{width:100%;padding:10px;border-radius:8px;border:1px solid #dfe7f5;background:#fbfdff}button{background:var(--accent);color:#fff;border:none;padding:10px 12px;border-radius:8px;cursor:pointer;font-weight:700}button:hover{background:#0069d9}.results{margin-top:12px;padding:12px;border-radius:8px;background:#f4f8ff;border:1px solid #e6f0ff;min-height:56px}.footer{background:#f1f1f1;padding:18px;text-align:center;color:#000;font-size:13px;margin-top:20px}.small{font-size:13px;color:var(--muted)}