feat: add share functionality and update modal layout in facilities

css/pages/facilities.css

@@ -314,6 +314,13 @@
     flex-wrap: wrap;
 }
 
+.modal-actions {
+    display: flex;
+    gap: 8px;
+    align-items: center;
+    flex-shrink: 0;
+}
+
 .large-badge {
     padding: 6px 14px;
     border-radius: 8px;
@@ -533,6 +540,35 @@
     transform: translateY(-1px);
 }
 
+.btn-share-facility {
+    display: inline-flex;
+    align-items: center;
+    gap: 6px;
+    padding: 6px 16px;
+    background: transparent;
+    color: var(--text-secondary);
+    border: 1.5px solid rgba(0,0,0,0.12);
+    border-radius: 18px;
+    font-size: 13px;
+    font-weight: 600;
+    cursor: pointer;
+    transition: var(--transition);
+    white-space: nowrap;
+    flex-shrink: 0;
+}
+
+.btn-share-facility:hover {
+    color: var(--accent-color);
+    border-color: var(--accent-color);
+    background: rgba(0,113,227,0.04);
+}
+
+.btn-share-facility.shared {
+    color: #15803d;
+    border-color: #34c759;
+    background: #e8fceb;
+}
+
 .btn-edit-facility {
     display: inline-flex;
     align-items: center;

facilities.html

@@ -117,11 +117,16 @@
                     <div class="modal-badges" id="modal-badges">
                         <!-- Badges injected by JS -->
                     </div>
+                    <div class="modal-actions">
+                        <button class="btn-share-facility" id="btn-share-facility" title="分享此设施">
+                            <i class="fas fa-share-alt"></i> 分享
+                        </button>
                         <button class="btn-edit-facility" id="btn-edit-facility" title="编辑此设施">
                             <i class="fas fa-pen"></i> 编辑
                         </button>
                     </div>
                 </div>
+            </div>
             
             <div class="modal-body">
                 <p class="modal-intro" id="modal-intro">设施简介...</p>

js/facilities_script.js

@@ -19,12 +19,36 @@ document.addEventListener('DOMContentLoaded', () => {
 
     let currentDetailItem = null;
 
+    // Generate stable anchor ID for a facility
+    function generateFacilityId(item) {
+        var raw = (item.title || '');
+        var hash = 0;
+        for (var i = 0; i < raw.length; i++) {
+            hash = ((hash << 5) - hash) + raw.charCodeAt(i);
+            hash |= 0;
+        }
+        return 'f' + Math.abs(hash).toString(36);
+    }
+
+    // Handle URL hash: auto-open facility modal
+    function handleHashNavigation() {
+        var hash = location.hash.replace('#', '');
+        if (!hash) return;
+        for (var i = 0; i < facilitiesData.length; i++) {
+            if (generateFacilityId(facilitiesData[i]) === hash) {
+                openModal(facilitiesData[i]);
+                return;
+            }
+        }
+    }
+
     // 1. Fetch Data
     fetch('data/facilities.json')
         .then(response => response.json())
         .then(data => {
             facilitiesData = data;
             renderGrid();
+            handleHashNavigation();
         })
         .catch(err => {
             console.error('Error loading facilities:', err);
@@ -66,12 +90,14 @@ document.addEventListener('DOMContentLoaded', () => {
     closeModal.addEventListener('click', () => {
         modal.style.display = 'none';
         document.body.style.overflow = 'auto'; // Enable scrolling
+        history.replaceState(null, '', location.pathname + location.search);
     });
 
     window.addEventListener('click', (e) => {
         if (e.target === modal) {
             modal.style.display = 'none';
             document.body.style.overflow = 'auto';
+            history.replaceState(null, '', location.pathname + location.search);
         }
     });
 
@@ -177,6 +203,10 @@ document.addEventListener('DOMContentLoaded', () => {
 
         modal.style.display = 'block';
         document.body.style.overflow = 'hidden'; // Prevent scrolling background
+
+        // Update URL hash
+        var anchorId = generateFacilityId(item);
+        history.replaceState(null, '', '#' + anchorId);
     }
 
     function renderContentList(container, list) {
@@ -302,6 +332,33 @@ document.addEventListener('DOMContentLoaded', () => {
         openEditor(null);
     });
 
+    // Share facility link
+    document.getElementById('btn-share-facility').addEventListener('click', () => {
+        if (!currentDetailItem) return;
+        var anchorId = generateFacilityId(currentDetailItem);
+        var url = location.origin + location.pathname + '#' + anchorId;
+        var btn = document.getElementById('btn-share-facility');
+        navigator.clipboard.writeText(url).then(() => {
+            btn.innerHTML = '<i class="fas fa-check"></i> 已复制链接';
+            btn.classList.add('shared');
+            setTimeout(() => {
+                btn.innerHTML = '<i class="fas fa-share-alt"></i> 分享';
+                btn.classList.remove('shared');
+            }, 2000);
+        }).catch(() => {
+            var tmp = document.createElement('input');
+            tmp.value = url;
+            document.body.appendChild(tmp);
+            tmp.select();
+            document.execCommand('copy');
+            document.body.removeChild(tmp);
+            btn.innerHTML = '<i class="fas fa-check"></i> 已复制链接';
+            setTimeout(() => {
+                btn.innerHTML = '<i class="fas fa-share-alt"></i> 分享';
+            }, 2000);
+        });
+    });
+
     // Open editor from detail modal
     document.getElementById('btn-edit-facility').addEventListener('click', () => {
         if (currentDetailItem) {