diff --git a/internal/web/static/app.css b/internal/web/static/app.css
index c84a691..9ffc985 100644
--- a/internal/web/static/app.css
+++ b/internal/web/static/app.css
@@ -398,6 +398,39 @@ td a.slug.paste-name { background: none; padding: 0; border-radius: 0; font-fami
 /* protection section rhythm (#20) */
 .protect { display: flex; flex-direction: column; gap: 2px; }
 .protect .pw-row { padding: 2px 8px 4px; }
+
+/* submenu number boxes (#157): styled number inputs + unit selects,
+   padded + indented to line up with parent option labels */
+.submenu {
+  margin: 6px 0 4px 8px;
+  padding: 8px 10px;
+  background: var(--bg);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+}
+.exp-group { display: flex; align-items: center; gap: 8px; }
+.num-input {
+  width: 72px;
+  border: 1px solid var(--border); border-radius: var(--radius);
+  background: var(--surface-2); color: var(--fg);
+  font: inherit; font-size: 21.6px; padding: 6px 10px; outline: none;
+  -moz-appearance: textfield; appearance: textfield;
+}
+.num-input::-webkit-outer-spin-button,
+.num-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
+.num-input:focus { border-color: var(--accent); }
+.unit-select {
+  border: 1px solid var(--border); border-radius: var(--radius);
+  background-color: var(--surface-2); color: var(--muted-fg);
+  font: inherit; font-size: 21.6px; padding: 6px 28px 6px 10px;
+  cursor: pointer; outline: none;
+  appearance: none; -webkit-appearance: none;
+  background-image: var(--chevron);
+  background-repeat: no-repeat; background-position: right 10px center;
+}
+.unit-select:focus { border-color: var(--accent); }
+.readable-group { gap: 8px; }
+.readable-label { font-size: 19px; color: var(--muted-fg); white-space: nowrap; }
 .pw-field {
   display: flex; align-items: center; gap: 2px; width: 100%;
   border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg);
diff --git a/internal/web/templates/new.html b/internal/web/templates/new.html
index c2a7b4c..877a5d3 100644
--- a/internal/web/templates/new.html
+++ b/internal/web/templates/new.html
@@ -46,15 +46,17 @@
         <label><input type="radio" name="exp" value="720h"> 30 days</label>
         <label><input type="radio" name="exp" value="custom"> Custom</label>
       </div>
-      <div class="pw-row hidden" id="customexp-row">
-        <input type="number" id="expnum" min="1" class="input-num" placeholder="90"> 
-        <select id="expunit">
-          <option value="m">minutes</option>
-          <option value="h" selected>hours</option>
-          <option value="d">days</option>
-          <option value="w">weeks</option>
-          <option value="mo">months</option>
-        </select>
+      <div class="pw-row submenu hidden" id="customexp-row">
+        <div class="exp-group">
+          <input type="number" class="num-input" id="expnum" min="1" placeholder="90" aria-label="Custom expiry amount">
+          <select id="expunit" class="unit-select">
+            <option value="m">minutes</option>
+            <option value="h" selected>hours</option>
+            <option value="d">days</option>
+            <option value="w">weeks</option>
+            <option value="mo">months</option>
+          </select>
+        </div>
         <div class="hint danger-hint hidden" id="customexp-err"></div>
       </div>
     </div>
@@ -64,7 +66,7 @@
         <label class="toggle"><input type="checkbox" id="haspw"> Password lock</label>
         <div class="pw-row hidden" id="pwrow"><div class="pw-field"><input type="password" id="password" placeholder="Password" autocomplete="new-password"><button type="button" class="reveal" id="pwreveal" title="Show password" tabindex="-1"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M1 12s4-7 11-7 11 7 11 7-4 7-11 7-11-7-11-7z"/><circle cx="12" cy="12" r="3"/><line class="eye-slash" x1="4" y1="4" x2="20" y2="20"/></svg></button></div></div>
         <label class="toggle"><input type="checkbox" id="burn"> Burn after read</label>
-        <div class="pw-row hidden" id="burnrow"><label class="hint hint-lg">Readable <input type="number" id="burnreads" min="1" value="1" class="input-num-sm"> times</label></div>
+        <div class="pw-row submenu hidden" id="burnrow"><div class="exp-group readable-group"><label class="hint readable-label">Readable</label><input type="number" class="num-input" id="burnreads" min="1" value="1" aria-label="Times readable"><label class="hint readable-label">times</label></div></div>
         <label class="toggle"><input type="checkbox" id="unlisted"> Unlisted</label>
       </div>
     </div>