:root{--primary-color: #007bff;--primary-hover: #0056b3;--bg-color: #f0f4f8;--card-bg: #ffffff;--text-dark: #333;--text-muted: #666;--border-color: #e0e0e0;--success-color: #28a745;--error-bg: #f8d7da;--error-text: #721c24;--success-bg: #d4edda;--success-text: #155724;--panel-bg: #fdfdfd}*{box-sizing:border-box}body{font-family:Outfit,Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;margin:0;padding:0;background:linear-gradient(135deg,#f0f4f8,#fff);min-height:100vh;color:var(--text-dark)}.container{max-width:1400px;margin:0 auto;padding:40px 20px}.header{text-align:center;margin-bottom:50px}.header h1{color:var(--text-dark);margin:0;font-size:3em;font-weight:800;letter-spacing:-.02em}.header p{color:var(--text-muted);font-size:1.3em;margin:10px 0;font-weight:500}.panels-container{display:grid;grid-template-columns:repeat(3,1fr);gap:25px;margin-bottom:30px}.panel{background-color:var(--panel-bg);border:1px solid var(--border-color);border-radius:16px;padding:25px;min-height:200px;box-shadow:0 4px 15px #00000008;transition:transform .2s,box-shadow .2s}.panel:hover{transform:translateY(-4px);box-shadow:0 10px 25px #0000000f}.panel h3{margin:0 0 20px;color:var(--primary-color);font-size:1.3em;text-align:center;border-bottom:1px solid var(--border-color);padding-bottom:15px;font-weight:700}.calc-button{display:block;width:100%;margin:10px 0;padding:12px;background-color:#fff;border:1px solid var(--border-color);border-radius:10px;cursor:pointer;font-size:1em;font-weight:500;color:var(--text-dark);transition:all .2s;text-align:left}.calc-button:hover{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color);transform:translate(5px)}.calc-button:active{transform:scale(.98)}.status-bar{background-color:#fff;padding:15px 25px;border-radius:12px;margin-top:30px;font-size:1em;border:1px solid var(--border-color);box-shadow:0 4px 10px #00000005;font-weight:500}.modal-overlay{display:flex;position:fixed;z-index:1000;left:0;top:0;width:100%;height:100%;background-color:#0006;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);justify-content:center;align-items:center;padding:20px}.modal-content{background-color:#fff;padding:40px;border-radius:24px;width:100%;max-width:650px;max-height:90vh;overflow-y:auto;box-shadow:0 25px 50px -12px #00000040;position:relative}.modal-content.graph-modal{max-width:1000px}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px;border-bottom:1px solid var(--border-color);padding-bottom:20px}.modal-title{font-size:1.8em;font-weight:800;color:var(--text-dark);letter-spacing:-.01em}.close{font-size:32px;font-weight:300;cursor:pointer;color:var(--text-muted);background:#f5f5f5;border:none;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .2s}.close:hover{background:var(--error-bg);color:var(--error-text);transform:rotate(90deg)}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:700;font-size:.95rem;color:var(--text-dark)}.form-group input,.form-group select,.form-group textarea{width:100%;padding:14px;border:1px solid var(--border-color);border-radius:12px;box-sizing:border-box;font-size:1rem;background-color:#f9fafb;transition:all .2s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-color);background-color:#fff;box-shadow:0 0 0 4px #007bff1a}.button-group{display:flex;gap:15px;margin-top:30px}.btn{padding:14px 28px;border:none;border-radius:12px;cursor:pointer;font-size:1em;font-weight:700;transition:all .2s}.btn-primary{background-color:var(--primary-color);color:#fff;box-shadow:0 4px 15px #007bff4d}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-2px);box-shadow:0 8px 20px #007bff66}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{background-color:#ccc;cursor:not-allowed;box-shadow:none}.btn-secondary{background-color:#f3f4f6;color:var(--text-dark)}.btn-secondary:hover{background-color:#e5e7eb}.btn-graph{background-color:var(--success-color);color:#fff;box-shadow:0 4px 15px #28a7454d}.btn-graph:hover{background-color:#218838;transform:translateY(-2px);box-shadow:0 8px 20px #28a74566}.result{background-color:#f8fafc;padding:25px;border-radius:16px;margin-top:30px;border:1px solid var(--primary-color);border-left-width:6px;white-space:pre-line;font-size:1.05em;line-height:1.6}.result strong{color:var(--primary-color);font-size:1.2em}.error{background-color:var(--error-bg);color:var(--error-text);padding:15px 20px;border-radius:12px;margin-top:20px;font-weight:600;border-left:5px solid var(--error-text)}.success{background-color:var(--success-bg);color:var(--success-text);padding:15px 20px;border-radius:12px;margin-top:20px;font-weight:600;border-left:5px solid var(--success-text)}.two-column{display:grid;grid-template-columns:1fr 1fr;gap:20px}.graph-container{width:100%;height:400px;margin-top:25px}.loading{display:flex;justify-content:center;align-items:center;padding:40px}.loading:after{content:"";width:35px;height:35px;border:4px solid #f3f3f3;border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s cubic-bezier(.76,.35,.2,.58) infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:1200px){.panels-container{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.panels-container{grid-template-columns:1fr}.container{padding:30px 15px}.header h1{font-size:2.2em}.modal-content{padding:25px 20px;border-radius:20px}.modal-title{font-size:1.4em}.two-column{grid-template-columns:1fr}}:root{--primary-color: #007bff;--primary-hover: #0056b3;--bg-color: #f0f0f0;--card-bg: #ffffff;--text-dark: #333;--text-muted: #666;--border-color: #ddd;--success-color: #28a745}.landing-container{min-height:100vh;max-width:100%;margin:0;padding:80px 20px;font-family:Outfit,Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--text-dark);line-height:1.6;background:linear-gradient(135deg,#f0f4f8,#fff)}.landing-content{max-width:1100px;margin:0 auto}.landing-header{text-align:center;margin-bottom:60px}.landing-header h1{font-size:3.5rem;margin-bottom:15px;color:var(--text-dark);display:flex;align-items:center;justify-content:center;gap:15px;letter-spacing:-.02em}.beta-badge{background:var(--primary-color);color:#fff;font-size:.9rem;padding:6px 16px;border-radius:50px;vertical-align:middle;text-transform:uppercase;font-weight:700;letter-spacing:.05em}.subtitle{font-size:1.4rem;color:var(--text-muted);max-width:700px;margin:0 auto}.landing-main section{margin-bottom:100px}.landing-main h2{text-align:center;margin-bottom:50px;font-size:2.2rem;font-weight:700}.info-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}.info-card{background:var(--card-bg);padding:40px;border-radius:16px;box-shadow:0 10px 30px #0000000a;border:1px solid rgba(0,0,0,.05);transition:all .3s cubic-bezier(.4,0,.2,1)}.info-card:hover{transform:translateY(-8px);box-shadow:0 20px 40px #00000014}.info-card h3{color:var(--primary-color);margin-top:0;margin-bottom:20px;font-size:1.5rem}.info-card ul{padding-left:20px}.info-card li{margin-bottom:12px}.action-section{text-align:center}.enter-btn{background:var(--primary-color);color:#fff;padding:20px 60px;font-size:1.4rem;font-weight:700;border:none;border-radius:100px;cursor:pointer;transition:all .4s cubic-bezier(.175,.885,.32,1.275);box-shadow:0 10px 40px #007bff4d}.enter-btn:hover{background:var(--primary-hover);transform:scale(1.05);box-shadow:0 15px 50px #007bff66}.feedback-section{max-width:800px;margin:0 auto!important;background:var(--card-bg);padding:50px;border-radius:20px;border:1px solid rgba(0,0,0,.05);box-shadow:0 10px 40px #00000008}.feedback-section p{text-align:center;margin-bottom:40px;color:var(--text-muted);font-size:1.1rem}.feedback-form{display:flex;flex-direction:column;gap:25px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:25px}.form-group{display:flex;flex-direction:column;gap:10px}.form-group label{font-weight:700;font-size:.95rem;color:var(--text-dark)}.form-group input,.form-group select,.form-group textarea{padding:15px;border:1px solid #e0e0e0;border-radius:12px;font-size:1rem;transition:all .2s;background:#f9f9f9}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-color);background:#fff;box-shadow:0 0 0 4px #007bff1a}.submit-btn{align-self:center;padding:18px 40px;font-weight:700;margin-top:15px;border-radius:12px}.success-msg{color:var(--success-color);text-align:center;margin-top:20px;font-weight:600;font-size:1.1rem}.landing-footer{text-align:center;margin-top:80px;color:var(--text-muted);font-size:1rem;padding-bottom:40px}@media(max-width:768px){.landing-header h1{font-size:2.5rem;flex-wrap:wrap}.form-row{grid-template-columns:1fr}.landing-container{padding:60px 20px}.feedback-section{padding:30px 20px}}