Initial commit: DDNS service with NIC V2 protocol support

Features:
- Token-based subdomain claiming
- NIC V2 (DynDNS2) protocol implementation
- Technitium DNS integration
- Rate limiting (10 req/min IP, 1 req/min token)
- Web UI for space claiming
- Docker/Docker Compose support
- Compatible with UniFi, pfSense, EdgeRouter

Module: git.dws.rip/DWS/dyn

web/static/css/style.css

@@ -0,0 +1,258 @@
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+body {
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    min-height: 100vh;
+    color: #333;
+}
+
+.container {
+    max-width: 800px;
+    margin: 0 auto;
+    padding: 20px;
+}
+
+header {
+    text-align: center;
+    padding: 40px 0;
+    color: white;
+}
+
+header h1 {
+    font-size: 2.5rem;
+    margin-bottom: 10px;
+}
+
+header p {
+    font-size: 1.2rem;
+    opacity: 0.9;
+}
+
+.card {
+    background: white;
+    border-radius: 12px;
+    padding: 30px;
+    margin-bottom: 20px;
+    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
+}
+
+.card h2 {
+    margin-bottom: 20px;
+    color: #667eea;
+}
+
+.input-group {
+    display: flex;
+    align-items: center;
+    background: #f5f5f5;
+    border-radius: 8px;
+    padding: 12px;
+    margin-bottom: 10px;
+}
+
+.input-group input {
+    flex: 1;
+    border: none;
+    background: transparent;
+    font-size: 1.1rem;
+    outline: none;
+    padding: 5px;
+}
+
+.domain-suffix {
+    color: #666;
+    font-size: 1.1rem;
+}
+
+.status {
+    margin: 10px 0;
+    font-size: 0.9rem;
+    min-height: 20px;
+}
+
+.status.available {
+    color: #22c55e;
+}
+
+.status.taken {
+    color: #ef4444;
+}
+
+button {
+    width: 100%;
+    padding: 14px;
+    background: #667eea;
+    color: white;
+    border: none;
+    border-radius: 8px;
+    font-size: 1rem;
+    cursor: pointer;
+    transition: background 0.2s;
+}
+
+button:hover:not(:disabled) {
+    background: #5a67d8;
+}
+
+button:disabled {
+    background: #ccc;
+    cursor: not-allowed;
+}
+
+.btn-secondary {
+    background: #f5f5f5;
+    color: #333;
+    margin-top: 10px;
+}
+
+.btn-secondary:hover {
+    background: #e5e5e5;
+}
+
+.hidden {
+    display: none !important;
+}
+
+.token-display {
+    background: #f0f9ff;
+    border: 2px solid #667eea;
+    border-radius: 8px;
+    padding: 20px;
+    margin: 20px 0;
+}
+
+.token {
+    display: block;
+    word-break: break-all;
+    font-family: 'Courier New', monospace;
+    font-size: 0.9rem;
+    background: white;
+    padding: 10px;
+    border-radius: 4px;
+    margin: 10px 0;
+}
+
+.fqdn-display {
+    margin-top: 20px;
+}
+
+.fqdn-display code {
+    display: block;
+    font-size: 1.1rem;
+    color: #667eea;
+    margin-top: 5px;
+}
+
+.config-grid {
+    display: grid;
+    gap: 15px;
+    margin: 20px 0;
+}
+
+.config-item {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    background: #f5f5f5;
+    padding: 12px;
+    border-radius: 6px;
+}
+
+.config-item label {
+    font-weight: 600;
+    color: #666;
+}
+
+.config-item code {
+    font-family: 'Courier New', monospace;
+    background: white;
+    padding: 4px 8px;
+    border-radius: 4px;
+    max-width: 60%;
+    overflow-x: auto;
+}
+
+.examples {
+    margin-top: 30px;
+}
+
+.examples h3 {
+    margin-bottom: 15px;
+    color: #667eea;
+}
+
+.example {
+    background: #f5f5f5;
+    padding: 15px;
+    border-radius: 8px;
+    margin-bottom: 15px;
+}
+
+.example h4 {
+    margin-bottom: 10px;
+    color: #333;
+}
+
+.example ul {
+    list-style: none;
+}
+
+.example li {
+    padding: 5px 0;
+    border-bottom: 1px solid #e5e5e5;
+}
+
+.example li:last-child {
+    border-bottom: none;
+}
+
+.example pre {
+    background: #1a1a1a;
+    color: #fff;
+    padding: 15px;
+    border-radius: 6px;
+    overflow-x: auto;
+    font-size: 0.85rem;
+    margin: 10px 0;
+}
+
+.card.error {
+    border-left: 4px solid #ef4444;
+}
+
+.card.error h2 {
+    color: #ef4444;
+}
+
+footer {
+    text-align: center;
+    padding: 20px;
+    color: white;
+    opacity: 0.8;
+}
+
+@media (max-width: 600px) {
+    header h1 {
+        font-size: 1.8rem;
+    }
+    
+    .card {
+        padding: 20px;
+    }
+    
+    .config-item {
+        flex-direction: column;
+        align-items: flex-start;
+        gap: 5px;
+    }
+    
+    .config-item code {
+        max-width: 100%;
+        width: 100%;
+    }
+}