:root{--primary-color:#4361ee;--secondary-color:#3a0ca3;--accent-color:#7209b7;--light-color:#f8f9fa;--dark-color:#212529;--gray-color:#6c757d;--success-color:#4cc9f0;--warning-color:#f72585;--whois-primary:#0ea5e9;--whois-gradient:linear-gradient(135deg,#38bdf8 0%,#0284c7 100%);--border-radius:12px;--box-shadow:0 8px 24px rgba(0,0,0,0.1);--transition:all 0.3s ease}*{margin:0;padding:0;box-sizing:border-box;font-family:'Segoe UI','Microsoft YaHei',sans-serif}body{background-color:#f0f2f5;color:var(--dark-color);line-height:1.6}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}header{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:white;padding:20px 0;box-shadow:0 4px 12px rgba(0,0,0,0.1);position:sticky;top:0;z-index:100}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:15px}.logo i{font-size:2.5rem}.logo h1{font-size:1.8rem;font-weight:700}.logo span{color:var(--success-color)}nav ul{display:flex;list-style:none;gap:25px}nav a{color:white;text-decoration:none;font-weight:600;font-size:1.1rem;padding:8px 12px;border-radius:6px;transition:var(--transition)}nav a:hover,nav a.active{background-color:rgba(255,255,255,0.2)}main{padding:40px 0}.section-title{font-size:1.8rem;margin-bottom:25px;color:var(--secondary-color);display:flex;align-items:center;gap:10px}.section-title i{color:var(--accent-color)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px;margin-bottom:40px}.tool-card{background:white;border-radius:var(--border-radius);padding:25px;box-shadow:var(--box-shadow);transition:var(--transition);cursor:pointer;border:2px solid transparent}.tool-card:hover{transform:translateY(-5px);border-color:var(--primary-color)}.tool-card i{font-size:2.5rem;color:var(--primary-color);margin-bottom:15px}.tool-card h3{font-size:1.4rem;margin-bottom:10px;color:var(--dark-color)}.tool-card p{color:var(--gray-color);margin-bottom:20px}.use-tool-btn{background-color:var(--primary-color);color:white;border:none;padding:10px 20px;border-radius:6px;font-weight:600;cursor:pointer;transition:var(--transition);width:100%}.use-tool-btn:hover{background-color:var(--secondary-color)}.tool-detail{background:white;border-radius:var(--border-radius);padding:30px;box-shadow:var(--box-shadow);margin-top:30px;display:none}.tool-detail.active{display:block}.tool-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px;padding-bottom:15px;border-bottom:2px solid #f0f2f5}.tool-header h2{font-size:1.6rem;color:var(--secondary-color)}.close-tool{background:none;border:none;font-size:1.5rem;color:var(--gray-color);cursor:pointer;transition:var(--transition)}.close-tool:hover{color:var(--warning-color)}.whois-wrapper{display:grid;grid-template-columns:1fr 1fr;gap:30px}@media (max-width:900px){.whois-wrapper{grid-template-columns:1fr}}.input-panel{display:flex;flex-direction:column;gap:20px}.input-group{display:flex;flex-direction:column;gap:8px}.input-label{font-weight:600;color:var(--secondary-color)}.domain-input{padding:15px;border:2px solid #bae6fd;border-radius:10px;font-size:1.1rem;outline:none;transition:var(--transition)}.domain-input:focus{border-color:var(--whois-primary);box-shadow:0 0 0 4px rgba(14,165,233,0.1)}.server-select{padding:12px;border:1px solid #e2e8f0;border-radius:8px;background:white}.info-box{background:#f0f9ff;border:1px solid #bae6fd;padding:15px;border-radius:8px;font-size:0.9rem;color:#0369a1}.output-panel{display:flex;flex-direction:column;gap:20px}.section-head{font-size:1.1rem;font-weight:700;color:var(--secondary-color);margin-bottom:10px;display:flex;align-items:center;gap:8px}.term-box{background:#0f172a;border-radius:10px;padding:20px;position:relative;border:1px solid #334155;min-height:120px;display:flex;flex-direction:column;justify-content:center}.term-cmd{font-family:'Consolas',monospace;color:#38bdf8;font-size:1.1rem;word-break:break-all}.term-prompt{color:#22c55e;margin-right:10px}.copy-float-btn{position:absolute;top:10px;right:10px;background:rgba(255,255,255,0.1);color:white;border:1px solid rgba(255,255,255,0.2);padding:5px 12px;border-radius:6px;cursor:pointer;font-size:0.85rem;backdrop-filter:blur(4px);transition:var(--transition)}.copy-float-btn:hover{background:var(--whois-primary)}.web-link-box{display:grid;grid-template-columns:1fr 1fr;gap:15px}.web-btn{background:white;border:2px solid #bae6fd;color:var(--whois-primary);padding:20px;border-radius:10px;text-align:center;text-decoration:none;font-weight:700;transition:var(--transition);display:flex;flex-direction:column;align-items:center;gap:10px}.web-btn:hover{background:#f0f9ff;border-color:var(--whois-primary);transform:translateY(-2px);box-shadow:0 4px 12px rgba(14,165,233,0.1)}.web-btn i{font-size:1.5rem}.ref-table{width:100%;border-collapse:collapse;font-size:0.9rem;margin-top:10px}.ref-table th{text-align:left;padding:10px;background:#f8fafc;color:var(--secondary-color);border-bottom:2px solid #e2e8f0}.ref-table td{padding:10px;border-bottom:1px solid #e2e8f0;font-family:'Consolas',monospace}