diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e985853
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.vercel
diff --git a/index.html b/index.html
index 5aadbf6..4dd13f0 100644
--- a/index.html
+++ b/index.html
@@ -15,7 +15,6 @@
     <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
     <meta name="apple-mobile-web-app-title" content="Events">
 
-    <!-- Lucide Icons -->
     <script src="https://unpkg.com/lucide@latest/dist/umd/lucide.min.js"></script>
 
     <style>
@@ -65,11 +64,8 @@
 
         /* Header */
         .header {
-            height: 52px;
-            min-height: 52px;
-            display: flex;
-            align-items: center;
-            justify-content: space-between;
+            height: 52px; min-height: 52px;
+            display: flex; align-items: center; justify-content: space-between;
             padding: 0 16px;
             border-bottom: 1px solid var(--border);
             background: var(--surface);
@@ -77,483 +73,281 @@
         }
 
         .logo {
-            display: flex;
-            align-items: center;
-            gap: 8px;
-            font-size: 14px;
-            font-weight: 600;
-            color: var(--accent);
+            display: flex; align-items: center; gap: 8px;
+            font-size: 14px; font-weight: 600; color: var(--accent);
         }
-
         .logo i { width: 18px; height: 18px; }
-
-        .header-meta {
-            font-size: 12px;
-            color: var(--text3);
-            font-weight: 400;
-            margin-left: 4px;
-        }
-
+        .header-meta { font-size: 12px; color: var(--text3); font-weight: 400; margin-left: 4px; }
         .header-actions { display: flex; gap: 4px; }
 
         .icon-btn {
-            width: 32px;
-            height: 32px;
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            background: none;
-            border: none;
-            border-radius: var(--radius);
-            color: var(--text2);
-            cursor: pointer;
+            width: 32px; height: 32px;
+            display: flex; align-items: center; justify-content: center;
+            background: none; border: none; border-radius: var(--radius);
+            color: var(--text2); cursor: pointer;
             transition: color 0.15s, background 0.15s;
         }
-
         .icon-btn:hover { color: var(--text); background: var(--surface2); }
         .icon-btn i { width: 16px; height: 16px; }
+        .icon-btn.has-filter { color: var(--accent); }
 
         /* Filter Tabs */
         .filter-bar {
             padding: 0 16px;
             border-bottom: 1px solid var(--border);
             background: var(--surface);
-            display: flex;
-            align-items: center;
-            gap: 0;
+            display: flex; align-items: center;
             flex-shrink: 0;
         }
-
         .filter-tab {
-            height: 40px;
-            padding: 0 14px;
-            background: none;
-            border: none;
-            border-bottom: 2px solid transparent;
-            color: var(--text2);
-            font-size: 13px;
-            font-family: inherit;
-            font-weight: 500;
-            cursor: pointer;
-            transition: color 0.15s, border-color 0.15s;
-            white-space: nowrap;
+            height: 40px; padding: 0 14px;
+            background: none; border: none; border-bottom: 2px solid transparent;
+            color: var(--text2); font-size: 13px; font-family: inherit; font-weight: 500;
+            cursor: pointer; transition: color 0.15s, border-color 0.15s; white-space: nowrap;
         }
-
         .filter-tab:hover { color: var(--text); }
         .filter-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
-
         .filter-count {
-            display: inline-flex;
-            align-items: center;
-            justify-content: center;
-            min-width: 18px;
-            height: 16px;
-            padding: 0 4px;
-            margin-left: 5px;
-            background: var(--accent-dim);
-            color: var(--accent);
-            border-radius: 8px;
-            font-size: 10px;
-            font-weight: 600;
+            display: inline-flex; align-items: center; justify-content: center;
+            min-width: 18px; height: 16px; padding: 0 4px; margin-left: 5px;
+            background: var(--accent-dim); color: var(--accent);
+            border-radius: 8px; font-size: 10px; font-weight: 600;
         }
 
+        /* Active Filter Chips */
+        .active-filters {
+            display: flex; gap: 6px; align-items: center;
+            padding: 8px 16px;
+            background: var(--surface);
+            border-bottom: 1px solid var(--border);
+            overflow-x: auto; -webkit-overflow-scrolling: touch;
+            scrollbar-width: none; flex-shrink: 0;
+        }
+        .active-filters::-webkit-scrollbar { display: none; }
+        .active-filters:empty { display: none; }
+        .active-filters.hidden { display: none; }
+
+        .chip {
+            display: inline-flex; align-items: center; gap: 4px;
+            padding: 3px 10px; border-radius: 20px;
+            background: var(--accent-dim); border: 1px solid var(--accent);
+            color: var(--accent); font-size: 11px; font-weight: 500;
+            white-space: nowrap; cursor: pointer; flex-shrink: 0;
+            transition: background 0.15s;
+        }
+        .chip:hover { background: rgba(110,231,183,0.2); }
+        .chip i { width: 10px; height: 10px; }
+
         /* Content */
-        .content {
-            flex: 1;
-            overflow-y: auto;
-            -webkit-overflow-scrolling: touch;
-        }
-
-        .content-inner {
-            max-width: 720px;
-            margin: 0 auto;
-            padding: 16px 16px 80px;
-        }
+        .content { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; }
+        .content-inner { max-width: 720px; margin: 0 auto; padding: 16px 16px 80px; }
 
         /* Section Divider */
         .section-label {
-            display: flex;
-            align-items: center;
-            gap: 8px;
+            display: flex; align-items: center; gap: 8px;
             margin: 20px 0 10px;
-            font-size: 11px;
-            font-weight: 600;
-            color: var(--text3);
-            letter-spacing: 0.08em;
-            text-transform: uppercase;
+            font-size: 11px; font-weight: 600; color: var(--text3);
+            letter-spacing: 0.08em; text-transform: uppercase;
         }
-
         .section-label:first-child { margin-top: 4px; }
-
-        .section-label::after {
-            content: '';
-            flex: 1;
-            height: 1px;
-            background: var(--border);
-        }
+        .section-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }
 
         /* Event Card */
         .event-card {
-            display: flex;
-            align-items: flex-start;
-            gap: 12px;
-            padding: 14px 0;
-            border-bottom: 1px solid var(--border);
-            cursor: pointer;
-            transition: background 0.1s;
+            display: flex; align-items: flex-start; gap: 12px;
+            padding: 14px 0; border-bottom: 1px solid var(--border);
+            cursor: pointer; transition: background 0.1s;
         }
-
         .event-card:last-child { border-bottom: none; }
-        .event-card:hover { background: var(--accent-dim); margin: 0 -12px; padding: 14px 12px; border-radius: var(--radius); border-bottom-color: transparent; }
+        .event-card:hover {
+            background: var(--accent-dim); margin: 0 -12px; padding: 14px 12px;
+            border-radius: var(--radius); border-bottom-color: transparent;
+        }
 
         /* Date Badge */
-        .date-badge {
-            flex-shrink: 0;
-            width: 40px;
-            text-align: center;
-            padding-top: 2px;
-        }
-
-        .date-badge-day {
-            display: block;
-            font-size: 20px;
-            font-weight: 600;
-            line-height: 1;
-            color: var(--text);
-        }
-
-        .date-badge-sub {
-            display: block;
-            font-size: 10px;
-            color: var(--text3);
-            margin-top: 2px;
-            letter-spacing: 0.03em;
-        }
+        .date-badge { flex-shrink: 0; width: 40px; text-align: center; padding-top: 2px; }
+        .date-badge-day { display: block; font-size: 20px; font-weight: 600; line-height: 1; color: var(--text); }
+        .date-badge-sub { display: block; font-size: 10px; color: var(--text3); margin-top: 2px; letter-spacing: 0.03em; }
 
         /* Event Body */
         .event-body { flex: 1; min-width: 0; }
-
-        .event-tags {
-            display: flex;
-            align-items: center;
-            gap: 6px;
-            margin-bottom: 4px;
-            flex-wrap: wrap;
-        }
+        .event-tags { display: flex; align-items: center; gap: 6px; margin-bottom: 4px; flex-wrap: wrap; }
 
         .tag {
-            display: inline-flex;
-            align-items: center;
-            padding: 1px 7px;
-            border-radius: 4px;
-            font-size: 10px;
-            font-weight: 600;
-            letter-spacing: 0.03em;
+            display: inline-flex; align-items: center; padding: 1px 7px;
+            border-radius: 4px; font-size: 10px; font-weight: 600; letter-spacing: 0.03em;
         }
+        .tag-active   { background: var(--accent-dim); color: var(--status-active); }
+        .tag-upcoming { background: var(--accent-dim); color: var(--status-upcoming); opacity: 0.8; }
+        .tag-ended    { background: rgba(75,85,99,0.15); color: var(--status-ended); }
+        .tag-category { background: var(--surface2); color: var(--text3); }
+        .tag-interest { background: rgba(129,140,248,0.12); color: #818CF8; }
+        .tag-audience { background: rgba(251,191,36,0.12); color: #D97706; }
 
-        .tag-active {
-            background: var(--accent-dim);
-            color: var(--status-active);
-        }
-
-        .tag-upcoming {
-            background: var(--accent-dim);
-            color: var(--status-upcoming);
-            opacity: 0.8;
-        }
-
-        .tag-ended {
-            background: rgba(75, 85, 99, 0.15);
-            color: var(--status-ended);
-        }
-
-        .tag-category {
-            background: var(--surface2);
-            color: var(--text3);
-        }
-
-        .event-title {
-            font-size: 14px;
-            font-weight: 500;
-            color: var(--text);
-            line-height: 1.4;
-            margin-bottom: 5px;
-        }
-
-        .event-card[data-status="ended"] .event-title {
-            color: var(--text3);
-        }
+        .event-title { font-size: 14px; font-weight: 500; color: var(--text); line-height: 1.4; margin-bottom: 5px; }
+        .event-card[data-status="ended"] .event-title { color: var(--text3); }
 
         .event-location {
-            display: flex;
-            align-items: center;
-            gap: 4px;
-            font-size: 12px;
-            color: var(--text2);
-            margin-bottom: 4px;
+            display: flex; align-items: center; gap: 4px;
+            font-size: 12px; color: var(--text2); margin-bottom: 4px;
         }
-
         .event-location i { width: 12px; height: 12px; flex-shrink: 0; }
 
-        .event-time {
-            display: flex;
-            align-items: center;
-            gap: 4px;
-            font-size: 11px;
-            color: var(--text3);
-        }
-
+        .event-time { display: flex; align-items: center; gap: 4px; font-size: 11px; color: var(--text3); }
         .event-time i { width: 11px; height: 11px; flex-shrink: 0; }
 
         /* Card Actions */
-        .event-actions {
-            flex-shrink: 0;
-            display: flex;
-            flex-direction: column;
-            gap: 4px;
-            padding-top: 2px;
-        }
-
+        .event-actions { flex-shrink: 0; display: flex; flex-direction: column; gap: 4px; padding-top: 2px; }
         .action-btn {
-            width: 28px;
-            height: 28px;
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            background: none;
-            border: none;
-            border-radius: 6px;
-            color: var(--text3);
-            cursor: pointer;
-            transition: color 0.2s, background 0.15s;
-            text-decoration: none;
+            width: 28px; height: 28px;
+            display: flex; align-items: center; justify-content: center;
+            background: none; border: none; border-radius: 6px;
+            color: var(--text3); cursor: pointer;
+            transition: color 0.2s, background 0.15s; text-decoration: none;
         }
-
         .action-btn:hover { color: var(--text2); background: var(--surface2); }
         .action-btn i { width: 14px; height: 14px; }
-
         .action-btn.saved { color: var(--accent); }
 
         /* Empty State */
         .empty-state {
-            display: flex;
-            flex-direction: column;
-            align-items: center;
-            justify-content: center;
-            padding: 64px 24px;
-            text-align: center;
-            gap: 12px;
-            color: var(--text3);
+            display: flex; flex-direction: column; align-items: center; justify-content: center;
+            padding: 64px 24px; text-align: center; gap: 12px; color: var(--text3);
         }
-
         .empty-state i { width: 32px; height: 32px; opacity: 0.4; }
         .empty-state p { font-size: 13px; line-height: 1.6; }
 
-        /* Detail Sheet (Bottom Sheet) */
+        /* Bottom Sheet (shared) */
         .sheet-backdrop {
-            display: none;
-            position: fixed;
-            inset: 0;
-            background: rgba(0,0,0,0.5);
-            z-index: 100;
-            opacity: 0;
-            transition: opacity 0.25s;
+            display: none; position: fixed; inset: 0;
+            background: rgba(0,0,0,0.5); z-index: 100;
+            opacity: 0; transition: opacity 0.25s;
         }
-
         .sheet-backdrop.open { display: block; opacity: 1; }
 
-        .detail-sheet {
-            position: fixed;
-            bottom: 0;
-            left: 0;
-            right: 0;
+        .bottom-sheet {
+            position: fixed; bottom: 0; left: 0; right: 0;
             background: var(--surface);
-            border-radius: 16px 16px 0 0;
-            border-top: 1px solid var(--border);
+            border-radius: 16px 16px 0 0; border-top: 1px solid var(--border);
             z-index: 101;
             transform: translateY(100%);
             transition: transform 0.3s cubic-bezier(0.34, 1.1, 0.64, 1);
-            max-height: 85dvh;
-            display: flex;
-            flex-direction: column;
+            max-height: 85dvh; display: flex; flex-direction: column;
         }
-
-        .detail-sheet.open { transform: translateY(0); }
+        .bottom-sheet.open { transform: translateY(0); }
 
         @media (min-width: 600px) {
-            .detail-sheet {
-                left: auto;
-                right: 16px;
-                bottom: 16px;
-                width: 420px;
-                max-height: 75dvh;
-                border-radius: 12px;
-                border: 1px solid var(--border);
+            .bottom-sheet {
+                left: auto; right: 16px; bottom: 16px;
+                width: 420px; max-height: 75dvh;
+                border-radius: 12px; border: 1px solid var(--border);
                 box-shadow: 0 16px 48px rgba(0,0,0,0.4);
             }
         }
 
         .sheet-handle {
-            width: 36px;
-            height: 4px;
-            background: var(--border);
-            border-radius: 2px;
-            margin: 10px auto 0;
-            flex-shrink: 0;
+            width: 36px; height: 4px; background: var(--border);
+            border-radius: 2px; margin: 10px auto 0; flex-shrink: 0;
         }
-
         @media (min-width: 600px) { .sheet-handle { display: none; } }
 
         .sheet-header {
-            display: flex;
-            align-items: center;
-            justify-content: space-between;
-            padding: 14px 16px 10px;
-            flex-shrink: 0;
+            display: flex; align-items: center; justify-content: space-between;
+            padding: 14px 16px 10px; flex-shrink: 0;
+        }
+        .sheet-title-text { font-size: 14px; font-weight: 600; color: var(--text); }
+        .sheet-body { flex: 1; overflow-y: auto; padding: 0 16px 24px; }
+
+        /* Preference Sheet specific */
+        .pref-section { margin-bottom: 20px; }
+        .pref-section-title {
+            font-size: 11px; font-weight: 600; color: var(--text3);
+            letter-spacing: 0.08em; text-transform: uppercase;
+            margin-bottom: 10px; display: flex; align-items: center; gap: 6px;
+        }
+        .pref-section-title i { width: 12px; height: 12px; }
+        .pref-tags { display: flex; flex-wrap: wrap; gap: 8px; }
+        .pref-tag {
+            display: inline-flex; align-items: center; gap: 5px;
+            padding: 5px 12px; border-radius: 20px;
+            background: var(--surface2); border: 1px solid var(--border);
+            color: var(--text2); font-size: 12px; font-weight: 500;
+            cursor: pointer; transition: all 0.15s; user-select: none;
+        }
+        .pref-tag.selected {
+            background: var(--accent-dim); border-color: var(--accent); color: var(--accent);
+        }
+        .pref-tag i { width: 12px; height: 12px; }
+
+        .pref-footer {
+            display: flex; gap: 8px; padding: 12px 16px;
+            border-top: 1px solid var(--border); flex-shrink: 0;
         }
 
-        .sheet-status-row {
-            display: flex;
-            align-items: center;
-            gap: 6px;
+        /* Detail Sheet specific */
+        .sheet-status-row { display: flex; align-items: center; gap: 6px; }
+        .sheet-title-h2 {
+            font-size: 17px; font-weight: 600; color: var(--text);
+            line-height: 1.4; margin-bottom: 14px;
         }
-
-        .sheet-body {
-            flex: 1;
-            overflow-y: auto;
-            padding: 0 16px 24px;
-        }
-
-        .sheet-title {
-            font-size: 17px;
-            font-weight: 600;
-            color: var(--text);
-            line-height: 1.4;
-            margin-bottom: 14px;
-        }
-
         .sheet-meta-row {
-            display: flex;
-            align-items: flex-start;
-            gap: 6px;
-            font-size: 13px;
-            color: var(--text2);
-            margin-bottom: 8px;
+            display: flex; align-items: flex-start; gap: 6px;
+            font-size: 13px; color: var(--text2); margin-bottom: 8px;
         }
-
         .sheet-meta-row i { width: 14px; height: 14px; flex-shrink: 0; margin-top: 1px; }
-
+        .sheet-interest-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 4px; }
         .sheet-desc {
-            font-size: 13px;
-            color: var(--text2);
-            line-height: 1.7;
-            margin: 14px 0;
-            padding-top: 14px;
-            border-top: 1px solid var(--border);
-        }
-
-        .sheet-footer {
-            display: flex;
-            gap: 8px;
-            padding: 12px 16px;
-            border-top: 1px solid var(--border);
-            flex-shrink: 0;
+            font-size: 13px; color: var(--text2); line-height: 1.7;
+            margin: 14px 0; padding-top: 14px; border-top: 1px solid var(--border);
         }
 
+        /* Buttons */
         .btn-primary {
-            flex: 1;
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            gap: 6px;
-            height: 38px;
-            background: var(--accent);
-            color: #0a0a0a;
-            font-weight: 600;
-            font-size: 13px;
-            font-family: inherit;
-            border: none;
-            border-radius: var(--radius);
-            cursor: pointer;
-            text-decoration: none;
-            transition: opacity 0.15s;
+            flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px;
+            height: 38px; background: var(--accent); color: #0a0a0a;
+            font-weight: 600; font-size: 13px; font-family: inherit;
+            border: none; border-radius: var(--radius); cursor: pointer;
+            text-decoration: none; transition: opacity 0.15s;
         }
-
         .btn-primary:hover { opacity: 0.85; }
         .btn-primary i { width: 14px; height: 14px; }
 
         .btn-secondary {
-            flex: 1;
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            gap: 6px;
-            height: 38px;
-            background: var(--surface2);
-            color: var(--text);
-            font-weight: 500;
-            font-size: 13px;
-            font-family: inherit;
-            border: 1px solid var(--border);
-            border-radius: var(--radius);
-            cursor: pointer;
-            text-decoration: none;
-            transition: background 0.15s;
+            flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px;
+            height: 38px; background: var(--surface2); color: var(--text);
+            font-weight: 500; font-size: 13px; font-family: inherit;
+            border: 1px solid var(--border); border-radius: var(--radius); cursor: pointer;
+            text-decoration: none; transition: background 0.15s;
         }
-
         .btn-secondary:hover { background: var(--border); }
         .btn-secondary i { width: 14px; height: 14px; }
 
         /* Toast */
         .toast {
-            position: fixed;
-            bottom: 24px;
-            left: 50%;
+            position: fixed; bottom: 24px; left: 50%;
             transform: translateX(-50%) translateY(16px);
-            background: var(--surface2);
-            border: 1px solid var(--border);
-            border-radius: var(--radius);
-            padding: 10px 16px;
-            font-size: 13px;
-            color: var(--text);
-            display: flex;
-            align-items: center;
-            gap: 8px;
-            opacity: 0;
-            transition: opacity 0.2s, transform 0.2s;
-            z-index: 200;
-            pointer-events: none;
-            white-space: nowrap;
+            background: var(--surface2); border: 1px solid var(--border);
+            border-radius: var(--radius); padding: 10px 16px;
+            font-size: 13px; color: var(--text);
+            display: flex; align-items: center; gap: 8px;
+            opacity: 0; transition: opacity 0.2s, transform 0.2s;
+            z-index: 200; pointer-events: none; white-space: nowrap;
         }
-
         .toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
         .toast i { width: 14px; height: 14px; color: var(--accent); }
 
         /* Loading */
-        .loading-state {
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            padding: 48px 0;
-        }
-
+        .loading-state { display: flex; align-items: center; justify-content: center; padding: 48px 0; }
         .spinner {
-            width: 20px;
-            height: 20px;
-            border: 2px solid var(--border);
-            border-top-color: var(--accent);
-            border-radius: 50%;
-            animation: spin 0.8s linear infinite;
+            width: 20px; height: 20px;
+            border: 2px solid var(--border); border-top-color: var(--accent);
+            border-radius: 50%; animation: spin 0.8s linear infinite;
         }
-
         @keyframes spin { to { transform: rotate(360deg); } }
 
-        /* Scrollbar */
         ::-webkit-scrollbar { width: 4px; }
         ::-webkit-scrollbar-track { background: transparent; }
         ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
-
-        /* Safe area */
         .content { padding-bottom: env(safe-area-inset-bottom); }
     </style>
 </head>
@@ -567,6 +361,9 @@
             <span class="header-meta" id="headerDate"></span>
         </div>
         <div class="header-actions">
+            <button class="icon-btn" id="filterBtn" title="絞り込み">
+                <i data-lucide="sliders-horizontal"></i>
+            </button>
             <button class="icon-btn" id="refreshBtn" title="更新">
                 <i data-lucide="refresh-cw"></i>
             </button>
@@ -589,6 +386,9 @@
         </button>
     </nav>
 
+    <!-- Active Filter Chips -->
+    <div class="active-filters hidden" id="activeFilters"></div>
+
     <!-- Content -->
     <main class="content">
         <div class="content-inner" id="eventList">
@@ -596,22 +396,59 @@
         </div>
     </main>
 
-    <!-- Detail Sheet Backdrop -->
+    <!-- Shared Backdrop -->
     <div class="sheet-backdrop" id="backdrop"></div>
 
+    <!-- Preference / Filter Sheet -->
+    <div class="bottom-sheet" id="prefSheet">
+        <div class="sheet-handle"></div>
+        <div class="sheet-header">
+            <span class="sheet-title-text">絞り込み・マイ設定</span>
+            <button class="icon-btn" id="closePref"><i data-lucide="x"></i></button>
+        </div>
+        <div class="sheet-body">
+            <!-- Interest Tags -->
+            <div class="pref-section">
+                <div class="pref-section-title">
+                    <i data-lucide="heart"></i> 興味・ジャンル
+                </div>
+                <div class="pref-tags" id="interestTagsList"></div>
+            </div>
+            <!-- Audience Tags -->
+            <div class="pref-section">
+                <div class="pref-section-title">
+                    <i data-lucide="users"></i> 対象者・シーン
+                </div>
+                <div class="pref-tags" id="audienceTagsList"></div>
+            </div>
+            <!-- Options -->
+            <div class="pref-section">
+                <div class="pref-section-title">
+                    <i data-lucide="settings-2"></i> オプション
+                </div>
+                <div class="pref-tags" id="optionTagsList"></div>
+            </div>
+        </div>
+        <div class="pref-footer">
+            <button class="btn-secondary" id="clearPref">クリア</button>
+            <button class="btn-primary" id="applyPref">この条件で絞り込む</button>
+        </div>
+    </div>
+
     <!-- Detail Sheet -->
-    <div class="detail-sheet" id="detailSheet">
+    <div class="bottom-sheet" id="detailSheet">
         <div class="sheet-handle"></div>
         <div class="sheet-header">
             <div class="sheet-status-row" id="sheetStatusRow"></div>
-            <button class="icon-btn" id="closeSheet"><i data-lucide="x"></i></button>
+            <button class="icon-btn" id="closeDetail"><i data-lucide="x"></i></button>
         </div>
         <div class="sheet-body">
-            <h2 class="sheet-title" id="sheetTitle"></h2>
+            <h2 class="sheet-title-h2" id="sheetTitle"></h2>
             <div id="sheetMeta"></div>
+            <div class="sheet-interest-tags" id="sheetTags"></div>
             <p class="sheet-desc" id="sheetDesc"></p>
         </div>
-        <div class="sheet-footer">
+        <div class="pref-footer">
             <button class="btn-secondary" id="sheetBrainBtn">
                 <i data-lucide="bookmark"></i> Brainに保存
             </button>
@@ -628,8 +465,42 @@
     </div>
 
 <script>
-// ---- データ定義 ----
-// 今日 = 2026-03-03 (現在地時間で計算)
+// ---- 定数 ----
+const INTEREST_TAGS = [
+    { id: 'sake',      label: '日本酒', icon: 'wine' },
+    { id: 'beer',      label: 'クラフトビール', icon: 'beer' },
+    { id: 'wine',      label: 'ワイン・お酒', icon: 'glass-water' },
+    { id: 'food',      label: 'グルメ・食', icon: 'utensils' },
+    { id: 'market',    label: 'マルシェ・市', icon: 'shopping-bag' },
+    { id: 'music',     label: '音楽・ライブ', icon: 'music' },
+    { id: 'art',       label: 'アート・展示', icon: 'palette' },
+    { id: 'craft',     label: 'クラフト・手工芸', icon: 'scissors' },
+    { id: 'outdoor',   label: 'アウトドア・自然', icon: 'trees' },
+    { id: 'sports',    label: 'スポーツ・体験', icon: 'dumbbell' },
+    { id: 'culture',   label: '伝統・文化', icon: 'landmark' },
+    { id: 'film',      label: '映画・演劇', icon: 'film' },
+    { id: 'learn',     label: '学び・セミナー', icon: 'book-open' },
+    { id: 'volunteer', label: 'ボランティア', icon: 'hand-heart' },
+    { id: 'kids',      label: '子ども向け', icon: 'baby' },
+];
+
+const AUDIENCE_TAGS = [
+    { id: 'couple',  label: 'カップル向け', icon: 'heart' },
+    { id: 'family',  label: 'ファミリー歓迎', icon: 'users' },
+    { id: 'solo',    label: 'ソロ歓迎', icon: 'user' },
+    { id: 'senior',  label: 'シニア向け', icon: 'accessibility' },
+    { id: 'pet',     label: 'ペット同伴OK', icon: 'paw-print' },
+    { id: 'foreign', label: '英語対応あり', icon: 'globe' },
+];
+
+const OPTION_TAGS = [
+    { id: 'free',     label: '無料', icon: 'circle-dollar-sign' },
+    { id: 'no-rsvp',  label: '申込不要', icon: 'door-open' },
+    { id: 'outdoor',  label: '屋外', icon: 'sun' },
+    { id: 'indoor',   label: '屋内', icon: 'home' },
+];
+
+// ---- モックイベントデータ（interestTags / audienceTags 付き）----
 const MOCK_EVENTS = [
     {
         id: '1',
@@ -641,43 +512,55 @@ const MOCK_EVENTS = [
         description: '地元農家が丹精込めて育てた旬の野菜・果物が並ぶ春の産直市。パン工房や手作りスイーツのブースも出店。家族でゆっくり楽しめます。',
         category: 'マルシェ',
         url: 'https://example.com/marche',
-        source: '市役所公式サイト'
+        source: '市役所公式サイト',
+        interestTags: ['market', 'food'],
+        audienceTags: ['family', 'solo'],
+        isFree: true, noRsvp: true, isOutdoor: false
     },
     {
         id: '2',
-        title: '朝の太極拳教室（無料体験）',
-        startDate: '2026-03-03', startTime: '07:00',
-        endDate:   '2026-03-03', endTime:   '08:30',
-        location: '中央公園 芝生広場',
-        address: '○○市中央公園',
-        description: '毎週火・木・土曜開催の太極拳サークルが無料体験会を開催。初心者・シニアの方歓迎。動きやすい服装でお越しください。',
-        category: '体験・スポーツ',
-        url: 'https://example.com/taichi',
-        source: '地域掲示板'
+        title: '日本酒蔵元開放デー ～春の一杯～',
+        startDate: '2026-03-03', startTime: '11:00',
+        endDate:   '2026-03-03', endTime:   '16:00',
+        location: '○○酒造 蔵内特設会場',
+        address: '○○市蔵町1-5',
+        description: '年に一度の蔵元開放。仕込み中の新酒の試飲と蔵見学が楽しめます。限定ラベルのお持ち帰り販売もあり。入場無料・試飲は有料（500円〜）。',
+        category: '日本酒',
+        url: 'https://example.com/sake',
+        source: '蔵元公式HP',
+        interestTags: ['sake', 'food', 'culture'],
+        audienceTags: ['couple', 'solo'],
+        isFree: false, noRsvp: true, isOutdoor: false
     },
     {
         id: '3',
-        title: '防災訓練・地域説明会',
-        startDate: '2026-03-05', startTime: '10:00',
-        endDate:   '2026-03-05', endTime:   '12:00',
-        location: '○○公民館 大ホール',
-        address: '○○市西町2-5',
-        description: '年1回の地区防災訓練と、今年度の避難計画変更に関する説明会を同日開催します。参加無料。',
-        category: '地域・行政',
-        url: 'https://example.com/bousai',
-        source: '町内会回覧板'
+        title: 'クラフトビール祭り in ○○公園',
+        startDate: '2026-03-07', startTime: '12:00',
+        endDate:   '2026-03-08', endTime:   '19:00',
+        location: '○○公園 野外広場',
+        address: '○○市北公園',
+        description: '国内外のブルワリーが20社集結。樽生の飲み比べや、フードトラック10台が出店。ライブパフォーマンスも開催予定。',
+        category: 'フェスティバル',
+        url: 'https://example.com/beer',
+        source: '実行委員会HP',
+        interestTags: ['beer', 'food', 'music'],
+        audienceTags: ['couple', 'solo'],
+        isFree: false, noRsvp: false, isOutdoor: true
     },
     {
         id: '4',
-        title: '伝統工芸・陶芸ワークショップ',
-        startDate: '2026-03-06', startTime: '13:00',
-        endDate:   '2026-03-06', endTime:   '17:00',
-        location: '○○文化センター 工芸室',
-        address: '○○市文化通り3-8',
-        description: '地元陶芸家による手びねり体験。土から形を作り、釉薬を選んで焼き上げ（後日お渡し）。定員12名・要事前申込。参加費 2,500円。',
-        category: 'ワークショップ',
-        url: 'https://example.com/ceramics',
-        source: '文化センターHP'
+        title: '日本酒ペアリングディナー（予約制）',
+        startDate: '2026-03-06', startTime: '18:30',
+        endDate:   '2026-03-06', endTime:   '21:00',
+        location: '○○レストラン プライベートルーム',
+        address: '○○市中央2-8',
+        description: '地酒専門店と料理人が組む全6品のコースディナー。季節の食材と日本酒のペアリングを楽しめます。定員10名。要予約・8,000円/人。',
+        category: '日本酒',
+        url: 'https://example.com/sake-dinner',
+        source: '地酒専門店ニュースレター',
+        interestTags: ['sake', 'food', 'learn'],
+        audienceTags: ['couple', 'solo'],
+        isFree: false, noRsvp: false, isOutdoor: false
     },
     {
         id: '5',
@@ -686,58 +569,73 @@ const MOCK_EVENTS = [
         endDate:   '2026-03-08', endTime:   '17:00',
         location: '○○公園 野外広場',
         address: '○○市北公園',
-        description: '全国から集まるクラフト作家80組が出展。アクセサリー、革工芸、テキスタイル、木工など多彩なジャンル。フードトラックも10台出店。入場無料。',
-        category: 'マーケット',
+        description: '全国から集まるクラフト作家80組が出展。アクセサリー、革工芸、テキスタイル、木工など多彩なジャンル。入場無料。',
+        category: 'クラフト',
         url: 'https://example.com/craft',
-        source: '実行委員会HP'
+        source: '実行委員会HP',
+        interestTags: ['craft', 'art', 'market'],
+        audienceTags: ['couple', 'family', 'solo'],
+        isFree: true, noRsvp: true, isOutdoor: true
     },
     {
         id: '6',
+        title: '防災訓練・地域説明会',
+        startDate: '2026-03-05', startTime: '10:00',
+        endDate:   '2026-03-05', endTime:   '12:00',
+        location: '○○公民館 大ホール',
+        address: '○○市西町2-5',
+        description: '年1回の地区防災訓練と、今年度の避難計画変更に関する説明会を同日開催。参加無料。',
+        category: '地域・行政',
+        url: 'https://example.com/bousai',
+        source: '町内会回覧板',
+        interestTags: ['learn', 'volunteer'],
+        audienceTags: ['family', 'senior', 'solo'],
+        isFree: true, noRsvp: true, isOutdoor: false
+    },
+    {
+        id: '7',
+        title: '伝統工芸・陶芸ワークショップ',
+        startDate: '2026-03-06', startTime: '13:00',
+        endDate:   '2026-03-06', endTime:   '17:00',
+        location: '○○文化センター 工芸室',
+        address: '○○市文化通り3-8',
+        description: '地元陶芸家による手びねり体験。土から形を作り、釉薬を選んで焼き上げ（後日お渡し）。定員12名・要事前申込。参加費 2,500円。',
+        category: 'ワークショップ',
+        url: 'https://example.com/ceramics',
+        source: '文化センターHP',
+        interestTags: ['craft', 'culture', 'learn'],
+        audienceTags: ['couple', 'family', 'solo', 'senior'],
+        isFree: false, noRsvp: false, isOutdoor: false
+    },
+    {
+        id: '8',
+        title: '春のクラシックコンサート',
+        startDate: '2026-03-14', startTime: '15:00',
+        endDate:   '2026-03-14', endTime:   '17:30',
+        location: '○○市民ホール 小ホール',
+        address: '○○市文化町1-1',
+        description: '地元弦楽四重奏団によるコンサート。ハイドン・シューベルト中心。全席自由・1,000円（高校生以下無料）。',
+        category: '音楽',
+        url: 'https://example.com/concert',
+        source: '市民ホールHP',
+        interestTags: ['music', 'art'],
+        audienceTags: ['couple', 'family', 'solo', 'senior'],
+        isFree: false, noRsvp: false, isOutdoor: false
+    },
+    {
+        id: '9',
         title: '地域清掃ボランティア',
         startDate: '2026-03-08', startTime: '09:00',
         endDate:   '2026-03-08', endTime:   '11:00',
         location: '○○川 河川敷',
         address: '○○市河川敷公園',
         description: '春の清掃活動。参加自由・事前申込不要。軍手・ゴミ袋は主催者が用意。終了後、軽食の提供あり。',
-        category: '地域・ボランティア',
+        category: 'ボランティア',
         url: 'https://example.com/cleanup',
-        source: '市環境課HP'
-    },
-    {
-        id: '7',
-        title: '春のクラシックコンサート',
-        startDate: '2026-03-14', startTime: '15:00',
-        endDate:   '2026-03-14', endTime:   '17:30',
-        location: '○○市民ホール 小ホール',
-        address: '○○市文化町1-1',
-        description: '地元弦楽四重奏団による春のコンサート。ハイドン・シューベルトを中心に演奏。全席自由・入場料 1,000円（高校生以下無料）。',
-        category: '音楽・アート',
-        url: 'https://example.com/concert',
-        source: '市民ホールHP'
-    },
-    {
-        id: '8',
-        title: 'まちなかマルシェ（来月）',
-        startDate: '2026-04-04', startTime: '10:00',
-        endDate:   '2026-04-05', endTime:   '16:00',
-        location: '商店街アーケード',
-        address: '○○市本町通り',
-        description: '毎月第1土日開催の定期マルシェ。4月は春のテーマで出店者募集中（出店費無料）。',
-        category: 'マルシェ',
-        url: 'https://example.com/monthly',
-        source: '商店街組合HP'
-    },
-    {
-        id: '9',
-        title: '子ども映画祭（無料上映）',
-        startDate: '2026-02-28', startTime: '10:00',
-        endDate:   '2026-03-02', endTime:   '17:00',
-        location: '中央図書館 多目的ホール',
-        address: '○○市図書館通り',
-        description: '国内外の子ども向けアニメ・映画の無料上映会。3日間で10作品上映。入場無料・予約不要。',
-        category: '映画・文化',
-        url: 'https://example.com/film',
-        source: '図書館HP'
+        source: '市環境課HP',
+        interestTags: ['volunteer', 'outdoor'],
+        audienceTags: ['family', 'solo', 'senior'],
+        isFree: true, noRsvp: true, isOutdoor: true
     },
     {
         id: '10',
@@ -749,7 +647,40 @@ const MOCK_EVENTS = [
         description: '自然観察指導員が案内するバードウォッチング入門ツアー。双眼鏡の貸し出しあり。申込不要。',
         category: '自然・体験',
         url: 'https://example.com/birds',
-        source: '環境教育センターHP'
+        source: '環境教育センターHP',
+        interestTags: ['outdoor', 'learn'],
+        audienceTags: ['family', 'solo', 'senior'],
+        isFree: true, noRsvp: true, isOutdoor: true
+    },
+    {
+        id: '11',
+        title: '子ども映画祭（無料上映）',
+        startDate: '2026-02-28', startTime: '10:00',
+        endDate:   '2026-03-02', endTime:   '17:00',
+        location: '中央図書館 多目的ホール',
+        address: '○○市図書館通り',
+        description: '国内外の子ども向けアニメ・映画の無料上映会。3日間で10作品上映。入場無料・予約不要。',
+        category: '映画・文化',
+        url: 'https://example.com/film',
+        source: '図書館HP',
+        interestTags: ['film', 'kids'],
+        audienceTags: ['family'],
+        isFree: true, noRsvp: true, isOutdoor: false
+    },
+    {
+        id: '12',
+        title: 'まちなかマルシェ（4月）',
+        startDate: '2026-04-04', startTime: '10:00',
+        endDate:   '2026-04-05', endTime:   '16:00',
+        location: '商店街アーケード',
+        address: '○○市本町通り',
+        description: '毎月第1土日開催の定期マルシェ。4月は春のテーマ。',
+        category: 'マルシェ',
+        url: 'https://example.com/monthly',
+        source: '商店街組合HP',
+        interestTags: ['market', 'food'],
+        audienceTags: ['family', 'couple', 'solo'],
+        isFree: true, noRsvp: true, isOutdoor: false
     }
 ];
 
@@ -764,82 +695,85 @@ function getStatus(ev) {
     if (ev.endDate < t) return 'ended';
     if (ev.startDate <= t && ev.endDate >= t) return 'active';
     const next7 = new Date(); next7.setDate(next7.getDate() + 7);
-    const nxt = next7.toISOString().slice(0,10);
-    if (ev.startDate <= nxt) return 'upcoming';
+    if (ev.startDate <= next7.toISOString().slice(0,10)) return 'upcoming';
     return 'future';
 }
 
-function statusLabel(s) {
-    return { active: '開催中', upcoming: '近日開催', future: '予定', ended: '終了' }[s];
-}
-
-function statusTagClass(s) {
-    return { active: 'tag-active', upcoming: 'tag-upcoming', future: 'tag-category', ended: 'tag-ended' }[s];
-}
+function statusLabel(s)    { return { active:'開催中', upcoming:'近日開催', future:'予定', ended:'終了' }[s]; }
+function statusTagClass(s) { return { active:'tag-active', upcoming:'tag-upcoming', future:'tag-category', ended:'tag-ended' }[s]; }
 
 function formatDateBadge(dateStr) {
     const d = new Date(dateStr + 'T00:00:00');
     const days = ['日','月','火','水','木','金','土'];
-    return {
-        day: d.getDate(),
-        sub: `${d.getMonth()+1}/${d.getDate()} ${days[d.getDay()]}`
-    };
+    return { day: d.getDate(), sub: `${d.getMonth()+1}/${d.getDate()} ${days[d.getDay()]}` };
 }
 
 function formatDateRange(ev) {
-    if (ev.startDate === ev.endDate) {
-        return `${ev.startDate.replace(/-/g,'/')}  ${ev.startTime} - ${ev.endTime}`;
-    }
-    return `${ev.startDate.replace(/-/g,'/')} ${ev.startTime} 〜 ${ev.endDate.replace(/-/g,'/')} ${ev.endTime}`;
+    return ev.startDate === ev.endDate
+        ? `${ev.startDate.replace(/-/g,'/')}  ${ev.startTime} - ${ev.endTime}`
+        : `${ev.startDate.replace(/-/g,'/')} ${ev.startTime} 〜 ${ev.endDate.replace(/-/g,'/')} ${ev.endTime}`;
 }
 
 function escapeHTML(s) {
     return (s||'').replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;');
 }
 
-// ---- フィルター・グループ ----
+// ---- 設定 ----
+let prefs = JSON.parse(localStorage.getItem('events-prefs') || '{"interests":[],"audience":[],"options":[]}');
+let pendingPrefs = null;
+
+function matchesPrefs(ev, p) {
+    if (!p) return true;
+    const hasInterest = p.interests.length === 0 || p.interests.some(id => (ev.interestTags||[]).includes(id));
+    const hasAudience = p.audience.length === 0 || p.audience.some(id => (ev.audienceTags||[]).includes(id));
+    let hasOption = true;
+    if (p.options.includes('free')    && !ev.isFree)    hasOption = false;
+    if (p.options.includes('no-rsvp') && !ev.noRsvp)   hasOption = false;
+    if (p.options.includes('outdoor') && !ev.isOutdoor) hasOption = false;
+    if (p.options.includes('indoor')  &&  ev.isOutdoor) hasOption = false;
+    return hasInterest && hasAudience && hasOption;
+}
+
+function hasActiveFilters(p) {
+    return p.interests.length > 0 || p.audience.length > 0 || p.options.length > 0;
+}
+
+// ---- State ----
 let currentFilter = 'today';
 let allEvents = [];
 let savedIds = new Set(JSON.parse(localStorage.getItem('events-saved') || '[]'));
 
-function filterEvents(events, filter) {
+// ---- Filter / Group ----
+function filterByDate(events, filter) {
     const t = today();
-    const next7 = new Date(); next7.setDate(next7.getDate() + 7);
-    const nxt = next7.toISOString().slice(0,10);
-    const weekStart = new Date(); weekStart.setDate(weekStart.getDate() - weekStart.getDay()); // 日曜
-    const weekEnd = new Date(weekStart); weekEnd.setDate(weekStart.getDate() + 6); // 土曜
-    const ws = weekStart.toISOString().slice(0,10);
-    const we = weekEnd.toISOString().slice(0,10);
-
-    if (filter === 'today') {
-        return events.filter(ev => ev.startDate <= t && ev.endDate >= t);
-    }
-    if (filter === 'week') {
-        return events.filter(ev => ev.startDate <= we && ev.endDate >= ws);
-    }
-    return events; // all
+    const d = new Date(); d.setDate(d.getDate() - d.getDay()); // 週日曜
+    const e = new Date(d); e.setDate(d.getDate() + 6); // 週土曜
+    const ws = d.toISOString().slice(0,10);
+    const we = e.toISOString().slice(0,10);
+    if (filter === 'today') return events.filter(ev => ev.startDate <= t && ev.endDate >= t);
+    if (filter === 'week')  return events.filter(ev => ev.startDate <= we && ev.endDate >= ws);
+    return events;
 }
 
 function groupEvents(events) {
-    const t = today();
-    const groups = {
-        active: { label: '開催中', events: [] },
-        upcoming: { label: '今週・近日', events: [] },
-        future: { label: '来月以降', events: [] },
-        ended: { label: '終了', events: [] }
-    };
-    for (const ev of events) {
-        const s = getStatus(ev);
-        groups[s].events.push(ev);
-    }
-    // 各グループを日付順ソート
-    for (const g of Object.values(groups)) {
-        g.events.sort((a,b) => (a.startDate+a.startTime).localeCompare(b.startDate+b.startTime));
-    }
-    return groups;
+    const g = { active:{label:'開催中',events:[]}, upcoming:{label:'今週・近日',events:[]},
+                future:{label:'来月以降',events:[]}, ended:{label:'終了',events:[]} };
+    for (const ev of events) g[getStatus(ev)].events.push(ev);
+    for (const s of Object.values(g)) s.events.sort((a,b)=>(a.startDate+a.startTime).localeCompare(b.startDate+b.startTime));
+    return g;
+}
+
+// ---- Render ----
+function renderInterestChips(ev) {
+    const tags = [...(ev.interestTags||[]), ...(ev.audienceTags||[])].slice(0,2);
+    if (!tags.length) return '';
+    const iDef = INTEREST_TAGS.concat(AUDIENCE_TAGS);
+    return tags.map(id => {
+        const def = iDef.find(x=>x.id===id);
+        return def ? `<span class="tag tag-interest">${escapeHTML(def.label)}</span>` : '';
+    }).join('');
 }
 
-// ---- レンダリング ----
 function renderCard(ev) {
     const status = getStatus(ev);
     const badge = formatDateBadge(ev.startDate);
@@ -854,89 +788,110 @@ function renderCard(ev) {
                 <div class="event-tags">
                     <span class="tag ${statusTagClass(status)}">${statusLabel(status)}</span>
                     <span class="tag tag-category">${escapeHTML(ev.category)}</span>
+                    ${renderInterestChips(ev)}
                 </div>
                 <div class="event-title">${escapeHTML(ev.title)}</div>
                 <div class="event-location">
-                    <i data-lucide="map-pin"></i>
-                    <span>${escapeHTML(ev.location)}</span>
+                    <i data-lucide="map-pin"></i><span>${escapeHTML(ev.location)}</span>
                 </div>
                 <div class="event-time">
-                    <i data-lucide="clock"></i>
-                    <span>${formatDateRange(ev)}</span>
+                    <i data-lucide="clock"></i><span>${formatDateRange(ev)}</span>
                 </div>
             </div>
             <div class="event-actions" onclick="event.stopPropagation()">
-                <button class="action-btn ${saved?'saved':''}" title="Brainに保存"
-                    onclick="saveToBrain('${ev.id}', event)">
+                <button class="action-btn ${saved?'saved':''}" title="Brainに保存" onclick="saveToBrain('${ev.id}',event)">
                     <i data-lucide="${saved?'bookmark-check':'bookmark'}"></i>
                 </button>
-                <a class="action-btn" href="${escapeHTML(ev.url)}" target="_blank"
-                    rel="noopener" title="詳細を見る">
+                <a class="action-btn" href="${escapeHTML(ev.url)}" target="_blank" rel="noopener" title="詳細を見る">
                     <i data-lucide="external-link"></i>
                 </a>
             </div>
-        </div>
-    `;
+        </div>`;
 }
 
 function renderTimeline() {
-    const filtered = filterEvents(allEvents, currentFilter);
+    const dateFiltered = filterByDate(allEvents, currentFilter);
+    const filtered = dateFiltered.filter(ev => matchesPrefs(ev, prefs));
     const list = document.getElementById('eventList');
 
-    // カウント更新
-    document.getElementById('count-today').textContent = filterEvents(allEvents,'today').length;
-    document.getElementById('count-week').textContent  = filterEvents(allEvents,'week').length;
-    document.getElementById('count-all').textContent   = allEvents.length;
+    // カウント (プレフィルタ前の数)
+    document.getElementById('count-today').textContent = filterByDate(allEvents,'today').filter(ev=>matchesPrefs(ev,prefs)).length;
+    document.getElementById('count-week').textContent  = filterByDate(allEvents,'week').filter(ev=>matchesPrefs(ev,prefs)).length;
+    document.getElementById('count-all').textContent   = allEvents.filter(ev=>matchesPrefs(ev,prefs)).length;
+
+    // アクティブフィルターチップ
+    renderActiveChips();
 
     if (filtered.length === 0) {
-        list.innerHTML = `
-            <div class="empty-state">
-                <i data-lucide="calendar-x"></i>
-                <p>この期間のイベントはありません。<br>「すべて」タブでまとめて確認できます。</p>
-            </div>`;
-        lucide.createIcons();
-        return;
+        list.innerHTML = `<div class="empty-state">
+            <i data-lucide="calendar-x"></i>
+            <p>この条件のイベントは見つかりません。<br>絞り込みを変更してみてください。</p>
+        </div>`;
+        lucide.createIcons(); return;
     }
 
     if (currentFilter === 'all') {
         const groups = groupEvents(filtered);
         let html = '';
-        const order = ['active', 'upcoming', 'future', 'ended'];
-        for (const key of order) {
+        for (const key of ['active','upcoming','future','ended']) {
             const g = groups[key];
-            if (g.events.length === 0) continue;
+            if (!g.events.length) continue;
             html += `<div class="section-label">${g.label}</div>`;
             html += g.events.map(renderCard).join('');
         }
         list.innerHTML = html;
     } else {
-        const sorted = [...filtered].sort((a,b) =>
-            (a.startDate+a.startTime).localeCompare(b.startDate+b.startTime));
-        list.innerHTML = sorted.map(renderCard).join('');
+        list.innerHTML = [...filtered]
+            .sort((a,b)=>(a.startDate+a.startTime).localeCompare(b.startDate+b.startTime))
+            .map(renderCard).join('');
     }
-
     lucide.createIcons();
 }
 
+function renderActiveChips() {
+    const container = document.getElementById('activeFilters');
+    const btn = document.getElementById('filterBtn');
+    if (!hasActiveFilters(prefs)) {
+        container.classList.add('hidden');
+        btn.classList.remove('has-filter');
+        return;
+    }
+    container.classList.remove('hidden');
+    btn.classList.add('has-filter');
+    const allDefs = INTEREST_TAGS.concat(AUDIENCE_TAGS).concat(OPTION_TAGS);
+    const allSelected = [...prefs.interests, ...prefs.audience, ...prefs.options];
+    container.innerHTML = allSelected.map(id => {
+        const def = allDefs.find(x=>x.id===id);
+        return def ? `<span class="chip" onclick="removeFilter('${id}')">
+            ${escapeHTML(def.label)}<i data-lucide="x"></i></span>` : '';
+    }).join('');
+    lucide.createIcons();
+}
+
+window.removeFilter = function(id) {
+    prefs.interests = prefs.interests.filter(x=>x!==id);
+    prefs.audience  = prefs.audience.filter(x=>x!==id);
+    prefs.options   = prefs.options.filter(x=>x!==id);
+    localStorage.setItem('events-prefs', JSON.stringify(prefs));
+    renderTimeline();
+};
+
 // ---- データ読み込み ----
 async function loadEvents() {
     document.getElementById('eventList').innerHTML =
         '<div class="loading-state"><div class="spinner"></div></div>';
     try {
-        const res = await fetch('/api/events');
+        // Synology API が設定されていればそちらを優先、なければ Vercel serverless を使用
+        const API_URL = localStorage.getItem('events-api-url')
+            || 'https://posimai-lab.tail72e846.ts.net/events/api/events';
+        const res = await fetch(API_URL);
         if (!res.ok) throw new Error('API error');
         const data = await res.json();
         allEvents = data.events || [];
-        // オフライン用にキャッシュ
         localStorage.setItem('events-cache', JSON.stringify(allEvents));
-    } catch (e) {
-        // キャッシュから復元
+    } catch {
         const cached = localStorage.getItem('events-cache');
-        if (cached) {
-            allEvents = JSON.parse(cached);
-        } else {
-            allEvents = MOCK_EVENTS;
-        }
+        allEvents = cached ? JSON.parse(cached) : MOCK_EVENTS;
     }
     renderTimeline();
 }
@@ -944,55 +899,43 @@ async function loadEvents() {
 // ---- Brain 保存 ----
 function saveToBrain(id, e) {
     e.stopPropagation();
-    const ev = allEvents.find(x => x.id === id);
+    const ev = allEvents.find(x=>x.id===id);
     if (!ev) return;
-
     savedIds.add(id);
     localStorage.setItem('events-saved', JSON.stringify([...savedIds]));
-
-    // Brain アプリへ URL を渡す
-    const brainUrl = `https://posimai-brain.vercel.app/?url=${encodeURIComponent(ev.url)}&title=${encodeURIComponent(ev.title)}`;
-    window.open(brainUrl, '_blank');
-
+    window.open(`https://posimai-brain.vercel.app/?url=${encodeURIComponent(ev.url)}&title=${encodeURIComponent(ev.title)}`, '_blank');
     showToast('Brainに保存しました');
     renderTimeline();
 }
 
 // ---- Detail Sheet ----
-let currentDetailId = null;
-
 window.openDetail = function(id) {
-    const ev = allEvents.find(x => x.id === id);
+    const ev = allEvents.find(x=>x.id===id);
     if (!ev) return;
-    currentDetailId = id;
     const status = getStatus(ev);
     const saved = savedIds.has(id);
+    const allDefs = INTEREST_TAGS.concat(AUDIENCE_TAGS);
 
-    document.getElementById('sheetStatusRow').innerHTML = `
-        <span class="tag ${statusTagClass(status)}">${statusLabel(status)}</span>
-        <span class="tag tag-category">${escapeHTML(ev.category)}</span>
-    `;
+    document.getElementById('sheetStatusRow').innerHTML =
+        `<span class="tag ${statusTagClass(status)}">${statusLabel(status)}</span>
+         <span class="tag tag-category">${escapeHTML(ev.category)}</span>`;
     document.getElementById('sheetTitle').textContent = ev.title;
     document.getElementById('sheetMeta').innerHTML = `
-        <div class="sheet-meta-row">
-            <i data-lucide="calendar"></i>
-            <span>${formatDateRange(ev)}</span>
+        <div class="sheet-meta-row"><i data-lucide="calendar"></i><span>${formatDateRange(ev)}</span></div>
+        <div class="sheet-meta-row"><i data-lucide="map-pin"></i>
+            <span><a href="https://www.google.com/maps/search/?api=1&query=${encodeURIComponent(ev.location+' '+ev.address)}"
+               target="_blank" rel="noopener" style="color:var(--accent);text-decoration:none;">${escapeHTML(ev.location)}</a></span>
         </div>
-        <div class="sheet-meta-row">
-            <i data-lucide="map-pin"></i>
-            <span>
-                <a href="https://www.google.com/maps/search/?api=1&query=${encodeURIComponent(ev.location+' '+ev.address)}"
-                   target="_blank" rel="noopener"
-                   style="color:var(--accent);text-decoration:none;">
-                    ${escapeHTML(ev.location)}
-                </a>
-            </span>
-        </div>
-        <div class="sheet-meta-row">
-            <i data-lucide="info"></i>
-            <span style="color:var(--text3);font-size:12px;">情報元: ${escapeHTML(ev.source)}</span>
-        </div>
-    `;
+        <div class="sheet-meta-row"><i data-lucide="info"></i>
+            <span style="color:var(--text3);font-size:12px;">情報元: ${escapeHTML(ev.source)}</span></div>`;
+
+    const tags = [...(ev.interestTags||[]), ...(ev.audienceTags||[])];
+    document.getElementById('sheetTags').innerHTML = tags.map(tid => {
+        const def = allDefs.find(x=>x.id===tid);
+        const isAudience = AUDIENCE_TAGS.some(x=>x.id===tid);
+        return def ? `<span class="tag ${isAudience?'tag-audience':'tag-interest'}">${escapeHTML(def.label)}</span>` : '';
+    }).join('');
+
     document.getElementById('sheetDesc').textContent = ev.description;
     document.getElementById('sheetLinkBtn').href = ev.url;
 
@@ -1004,28 +947,80 @@ window.openDetail = function(id) {
     brainBtn.onclick = () => {
         savedIds.add(id);
         localStorage.setItem('events-saved', JSON.stringify([...savedIds]));
-        const brainUrl = `https://posimai-brain.vercel.app/?url=${encodeURIComponent(ev.url)}&title=${encodeURIComponent(ev.title)}`;
-        window.open(brainUrl, '_blank');
+        window.open(`https://posimai-brain.vercel.app/?url=${encodeURIComponent(ev.url)}&title=${encodeURIComponent(ev.title)}`, '_blank');
         showToast('Brainに保存しました');
         brainBtn.innerHTML = '<i data-lucide="bookmark-check"></i> 保存済み';
         brainBtn.style.color = 'var(--accent)';
-        lucide.createIcons();
-        renderTimeline();
+        lucide.createIcons(); renderTimeline();
     };
 
-    document.getElementById('detailSheet').classList.add('open');
-    document.getElementById('backdrop').classList.add('open');
+    openSheet('detailSheet');
     lucide.createIcons();
 };
 
-function closeDetail() {
-    document.getElementById('detailSheet').classList.remove('open');
-    document.getElementById('backdrop').classList.remove('open');
-    currentDetailId = null;
+// ---- Preference Sheet ----
+function buildPrefTags(container, defs, selectedArr, colorClass) {
+    container.innerHTML = defs.map(def => `
+        <span class="pref-tag ${selectedArr.includes(def.id)?'selected':''}" data-id="${def.id}">
+            <i data-lucide="${def.icon}"></i>${escapeHTML(def.label)}
+        </span>`).join('');
+    container.querySelectorAll('.pref-tag').forEach(el => {
+        el.addEventListener('click', () => el.classList.toggle('selected'));
+    });
 }
 
-document.getElementById('closeSheet').addEventListener('click', closeDetail);
-document.getElementById('backdrop').addEventListener('click', closeDetail);
+function openPrefSheet() {
+    pendingPrefs = JSON.parse(JSON.stringify(prefs));
+    buildPrefTags(document.getElementById('interestTagsList'), INTEREST_TAGS, prefs.interests, 'interest');
+    buildPrefTags(document.getElementById('audienceTagsList'), AUDIENCE_TAGS, prefs.audience, 'audience');
+    buildPrefTags(document.getElementById('optionTagsList'), OPTION_TAGS, prefs.options, 'option');
+    openSheet('prefSheet');
+    lucide.createIcons();
+}
+
+document.getElementById('applyPref').addEventListener('click', () => {
+    prefs.interests = [...document.querySelectorAll('#interestTagsList .pref-tag.selected')].map(el=>el.dataset.id);
+    prefs.audience  = [...document.querySelectorAll('#audienceTagsList .pref-tag.selected')].map(el=>el.dataset.id);
+    prefs.options   = [...document.querySelectorAll('#optionTagsList .pref-tag.selected')].map(el=>el.dataset.id);
+    localStorage.setItem('events-prefs', JSON.stringify(prefs));
+    closeSheet('prefSheet');
+    renderTimeline();
+    if (hasActiveFilters(prefs)) showToast('絞り込みを適用しました');
+});
+
+document.getElementById('clearPref').addEventListener('click', () => {
+    document.querySelectorAll('#prefSheet .pref-tag.selected').forEach(el=>el.classList.remove('selected'));
+});
+
+// ---- Sheet Open/Close ----
+function openSheet(id) {
+    document.getElementById(id).classList.add('open');
+    document.getElementById('backdrop').classList.add('open');
+}
+function closeSheet(id) {
+    document.getElementById(id).classList.remove('open');
+    if (!document.querySelector('.bottom-sheet.open')) {
+        document.getElementById('backdrop').classList.remove('open');
+    }
+}
+
+document.getElementById('closeDetail').addEventListener('click', () => closeSheet('detailSheet'));
+document.getElementById('closePref').addEventListener('click',   () => closeSheet('prefSheet'));
+document.getElementById('backdrop').addEventListener('click', () => {
+    closeSheet('detailSheet'); closeSheet('prefSheet');
+    document.getElementById('backdrop').classList.remove('open');
+});
+document.getElementById('filterBtn').addEventListener('click', openPrefSheet);
+
+// ---- Filter Tabs ----
+document.querySelectorAll('.filter-tab').forEach(btn => {
+    btn.addEventListener('click', () => {
+        document.querySelectorAll('.filter-tab').forEach(b=>b.classList.remove('active'));
+        btn.classList.add('active');
+        currentFilter = btn.dataset.filter;
+        renderTimeline();
+    });
+});
 
 // ---- Toast ----
 let toastTimer = null;
@@ -1034,37 +1029,29 @@ function showToast(msg) {
     document.getElementById('toastMsg').textContent = msg;
     t.classList.add('show');
     if (toastTimer) clearTimeout(toastTimer);
-    toastTimer = setTimeout(() => t.classList.remove('show'), 2500);
+    toastTimer = setTimeout(()=>t.classList.remove('show'), 2500);
 }
 
-// ---- Filter Tabs ----
-document.querySelectorAll('.filter-tab').forEach(btn => {
-    btn.addEventListener('click', () => {
-        document.querySelectorAll('.filter-tab').forEach(b => b.classList.remove('active'));
-        btn.classList.add('active');
-        currentFilter = btn.dataset.filter;
-        renderTimeline();
-    });
-});
-
 // ---- テーマ ----
 function applyTheme(theme) {
     document.documentElement.setAttribute('data-theme', theme);
     const icon = document.querySelector('#themeBtn i');
-    if (icon) {
-        icon.setAttribute('data-lucide', theme === 'light' ? 'moon' : 'sun');
-        lucide.createIcons();
-    }
+    if (icon) { icon.setAttribute('data-lucide', theme==='light'?'moon':'sun'); lucide.createIcons(); }
 }
-
 document.getElementById('themeBtn').addEventListener('click', () => {
-    const current = document.documentElement.getAttribute('data-theme') || 'dark';
-    const next = current === 'dark' ? 'light' : 'dark';
-    localStorage.setItem('events-theme', next);
-    applyTheme(next);
+    const next = (document.documentElement.getAttribute('data-theme')||'dark') === 'dark' ? 'light' : 'dark';
+    localStorage.setItem('events-theme', next); applyTheme(next);
 });
 
-// ---- ヘッダー日付 ----
+// ---- Refresh ----
+document.getElementById('refreshBtn').addEventListener('click', () => {
+    const icon = document.querySelector('#refreshBtn i');
+    icon.style.transition = 'transform 0.5s'; icon.style.transform = 'rotate(360deg)';
+    setTimeout(()=>{ icon.style.transform=''; }, 500);
+    loadEvents().then(()=>showToast('最新情報に更新しました'));
+});
+
+// ---- Header Date ----
 function updateHeaderDate() {
     const d = new Date();
     const days = ['日','月','火','水','木','金','土'];
@@ -1072,26 +1059,13 @@ function updateHeaderDate() {
         `${d.getMonth()+1}/${d.getDate()}(${days[d.getDay()]})`;
 }
 
-// ---- リフレッシュ ----
-document.getElementById('refreshBtn').addEventListener('click', () => {
-    const btn = document.getElementById('refreshBtn').querySelector('i');
-    btn.style.transition = 'transform 0.5s';
-    btn.style.transform = 'rotate(360deg)';
-    setTimeout(() => { btn.style.transform = ''; }, 500);
-    loadEvents().then(() => showToast('最新情報に更新しました'));
-});
-
 // ---- PWA Service Worker ----
 if ('serviceWorker' in navigator) {
-    window.addEventListener('load', () => {
-        navigator.serviceWorker.register('/sw.js')
-            .catch(() => {});
-    });
+    window.addEventListener('load', ()=>{ navigator.serviceWorker.register('/sw.js').catch(()=>{}); });
 }
 
-// ---- 初期化 ----
-const savedTheme = localStorage.getItem('events-theme') || 'dark';
-applyTheme(savedTheme);
+// ---- Init ----
+applyTheme(localStorage.getItem('events-theme') || 'dark');
 updateHeaderDate();
 lucide.createIcons();
 loadEvents();