:root{font-family:Pretendard,-apple-system,BlinkMacSystemFont,system-ui,sans-serif;line-height:1.6;color:#1a1a2e;background:#f8f9fc}*{box-sizing:border-box;margin:0;padding:0}body{min-height:100vh}a{color:#4361ee;text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}.layout{min-height:100vh;display:flex;flex-direction:column}.layout main{flex:1;padding:2rem 0}.nav{background:#1a1a2e;color:#eee;padding:1rem 0;box-shadow:0 2px 8px #0000001a}.nav .container{display:flex;align-items:center;justify-content:space-between}.nav a{color:#a8d4ff}.nav a:hover{color:#fff}.nav-links{display:flex;gap:1.5rem}.card{background:#fff;border-radius:12px;padding:1.5rem;box-shadow:0 2px 12px #0000000f;border:1px solid #e8ecf4}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.5rem}.chain-card{transition:transform .2s,box-shadow .2s}.chain-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0000001a}.chain-card h3{margin-bottom:.5rem;color:#1a1a2e}.chain-card p{color:#555;font-size:.95rem}.monitor-section{margin-bottom:2rem}.monitor-section h2{margin-bottom:1rem;color:#1a1a2e}.monitor-input{display:flex;gap:.75rem;margin-bottom:1rem;flex-wrap:wrap}.monitor-input input{flex:1;min-width:280px;padding:.6rem .75rem;border:1px solid #ccc;border-radius:8px;font-size:.95rem}.monitor-input button{padding:.6rem 1.25rem;background:#4361ee;color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:600}.monitor-input button:hover{background:#3651d4}.monitor-input button:disabled{background:#999;cursor:not-allowed}.status-box{padding:1rem;border-radius:8px;margin-top:.5rem;font-family:ui-monospace,monospace;font-size:.9rem}.status-box.success{background:#e8f5e9;border:1px solid #a5d6a7}.status-box.error{background:#ffebee;border:1px solid #ef9a9a}.status-box.pending{background:#fff8e1;border:1px solid #ffe082}.about-section{margin-bottom:2rem}.about-section h2{margin-bottom:.75rem;color:#1a1a2e;font-size:1.35rem}.about-section h3{margin:1.25rem 0 .5rem;color:#333;font-size:1.1rem}.about-section p,.about-section ul{margin-bottom:.75rem;color:#444}.about-section ul{padding-left:1.5rem}.about-section li{margin-bottom:.35rem}.disk-table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.9rem}.disk-table th,.disk-table td{border:1px solid #e0e0e0;padding:.6rem .75rem;text-align:left}.disk-table th{background:#f5f5f5;font-weight:600}.disk-table tr:nth-child(2n){background:#fafafa}