diff --git a/index.html b/index.html
index 324885d..0a98f1f 100644
--- a/index.html
+++ b/index.html
@@ -105,7 +105,7 @@
                                         <th data-sort="asennusosoite">Osoite &#8597;</th>
                                         <th data-sort="kaupunki">Kaupunki &#8597;</th>
                                         <th data-sort="liittymanopeus">Nopeus &#8597;</th>
-                                        <th data-sort="hinta">Hinta/kk &#8597;</th>
+                                        <th data-sort="hinta">Hinta/kk &#8597; <label title="Näytä/piilota hinnat" style="cursor:pointer;font-weight:normal;font-size:0.75rem;margin-left:0.3rem;"><input type="checkbox" id="toggle-prices" style="vertical-align:middle;"> 👁</label></th>
                                         <th data-sort="sopimuskausi">Sopimus &#8597;</th>
                                         <th>Toiminnot</th>
                                     </tr>
diff --git a/script.js b/script.js
index cd29256..feab1dc 100644
--- a/script.js
+++ b/script.js
@@ -347,15 +347,14 @@ function renderTable() {
             const c = r.customer, l = r.liittyma;
             const isFirst = c.id !== prevId;
             prevId = c.id;
-            const sopimus = l.sopimuskausi ? l.sopimuskausi + ' kk' : '';
-            const alkupvm = l.alkupvm ? ' (' + esc(l.alkupvm) + ')' : '';
+            const sopimusStr = contractRemaining(l.sopimuskausi, l.alkupvm);
             return `<tr data-id="${c.id}" class="${isFirst ? '' : 'sub-row'}">
                 <td>${isFirst ? '<strong>' + esc(c.yritys) + '</strong>' : '<span class="sub-marker">&#8627;</span>'}</td>
                 <td>${esc(l.asennusosoite)}${l.postinumero ? ', ' + esc(l.postinumero) : ''}</td>
                 <td>${esc(l.kaupunki)}</td>
                 <td>${esc(l.liittymanopeus)}</td>
                 <td class="price-cell">${formatPrice(l.hinta)}</td>
-                <td>${sopimus}${alkupvm}</td>
+                <td>${sopimusStr}</td>
                 <td class="actions-cell">${isFirst ? `<button onclick="event.stopPropagation();editCustomer('${c.id}')" title="Muokkaa">&#9998;</button><button onclick="event.stopPropagation();deleteCustomer('${c.id}','${esc(c.yritys)}')" title="Arkistoi">&#128451;</button>` : ''}</td>
             </tr>`;
         }).join('');
@@ -426,6 +425,36 @@ function setTrivia(id, value, sub) {
 }
 function setText(id, value) { const el = document.getElementById(id); if (el) el.textContent = value; }
 function formatPrice(val) { return parseFloat(val || 0).toFixed(2).replace('.', ',') + ' €'; }
+
+function contractRemaining(sopimuskausi, alkupvm) {
+    if (!sopimuskausi) return '';
+    const months = parseInt(sopimuskausi);
+    if (!months || !alkupvm) return months + ' kk';
+    const start = new Date(alkupvm);
+    if (isNaN(start.getTime())) return months + ' kk';
+    const end = new Date(start);
+    end.setMonth(end.getMonth() + months);
+    const now = new Date();
+    const diffMs = end - now;
+    if (diffMs <= 0) return `${months} kk <span style="color:#e74c3c;font-size:0.8rem;">(päättynyt)</span>`;
+    const remainMonths = Math.ceil(diffMs / (1000 * 60 * 60 * 24 * 30.44));
+    return `${months} kk <span style="color:#888;font-size:0.8rem;">(${remainMonths} kk jäljellä)</span>`;
+}
+
+// Hintojen näyttö/piilotus
+(function() {
+    const toggle = document.getElementById('toggle-prices');
+    if (!toggle) return;
+    // Oletuksena piilossa
+    document.getElementById('customer-table')?.classList.add('prices-hidden');
+    toggle.addEventListener('change', () => {
+        document.getElementById('customer-table')?.classList.toggle('prices-hidden', !toggle.checked);
+        // Blurraa myös asiakaskortin hinnat
+        document.querySelectorAll('.customer-detail-card').forEach(el => {
+            el.classList.toggle('prices-hidden', !toggle.checked);
+        });
+    });
+})();
 function esc(str) { if (!str) return ''; const d = document.createElement('div'); d.textContent = str; return d.innerHTML; }
 
 function timeAgo(dateStr) {
@@ -486,7 +515,7 @@ function showDetail(id) {
                 <div class="detail-item"><div class="detail-label">Osoite</div><div class="detail-value">${detailVal(addr)}</div></div>
                 <div class="detail-item"><div class="detail-label">Nopeus</div><div class="detail-value">${detailVal(l.liittymanopeus)}</div></div>
                 <div class="detail-item"><div class="detail-label">Hinta / kk</div><div class="detail-value price-cell">${formatPrice(l.hinta)}</div></div>
-                <div class="detail-item"><div class="detail-label">Sopimuskausi</div><div class="detail-value">${l.sopimuskausi ? l.sopimuskausi + ' kk' : '-'}</div></div>
+                <div class="detail-item"><div class="detail-label">Sopimuskausi</div><div class="detail-value">${contractRemaining(l.sopimuskausi, l.alkupvm) || '-'}</div></div>
                 <div class="detail-item"><div class="detail-label">Alkaen</div><div class="detail-value">${detailVal(l.alkupvm)}</div></div>
                 <div class="detail-item"><div class="detail-label">VLAN</div><div class="detail-value">${detailVal(l.vlan)}</div></div>
                 <div class="detail-item"><div class="detail-label">Laite</div><div class="detail-value">${detailVal(l.laite)}</div></div>
@@ -504,7 +533,7 @@ function showDetail(id) {
             <div class="detail-item"><div class="detail-label">Y-tunnus</div><div class="detail-value">${detailVal(c.ytunnus)}</div></div>
         </div></div>
         <div class="detail-section"><h3>Liittymät (${liittymat.length})</h3>${liittymatHtml}
-            ${liittymat.length > 1 ? `<div class="liittyma-total">Yhteensä: ${formatPrice(totalH)}/kk</div>` : ''}
+            ${liittymat.length > 1 ? `<div class="liittyma-total"><span class="price-cell">${formatPrice(totalH)}/kk</span></div>` : ''}
         </div>
         <div class="detail-section"><h3>Yhteystiedot</h3><div class="detail-grid">
             <div class="detail-item"><div class="detail-label">Yhteyshenkilö</div><div class="detail-value">${detailVal(c.yhteyshenkilö)}</div></div>
@@ -528,6 +557,9 @@ function showDetail(id) {
             <div id="file-list" class="file-list" style="margin-top:0.75rem;"></div>
         </div>`;
 
+    // Synkronoi prices-hidden tila detail-modaliin
+    const pricesHidden = document.getElementById('customer-table')?.classList.contains('prices-hidden');
+    detailModal.querySelector('.modal-content')?.classList.toggle('prices-hidden', !!pricesHidden);
     detailModal.style.display = 'flex';
     loadFiles(id);
     document.getElementById('file-upload-input').addEventListener('change', async function () {
diff --git a/style.css b/style.css
index 896e93c..e5b8abd 100644
--- a/style.css
+++ b/style.css
@@ -420,6 +420,11 @@ tbody td {
     font-weight: 700;
     color: var(--primary-color);
 }
+.prices-hidden .price-cell {
+    filter: blur(6px);
+    user-select: none;
+    transition: filter 0.2s;
+}
 
 .actions-cell {
     white-space: nowrap;