fix(comments): denser zibll-like chrome and guest fields

Tighten comment form density, collapse guest name/email behind a
toggle, and refine empty-state copy for closed/author-only views.

assets/css/frontend/comments.css

@@ -87,7 +87,7 @@
 
 .comment-form__inner {
     display: flex;
-    gap: 12px;
+    gap: 10px;
     align-items: flex-start;
 }
 
@@ -169,11 +169,74 @@
     align-items: center;
     gap: 8px;
     margin-left: auto;
+    flex-wrap: wrap;
+    justify-content: flex-end;
+}
+
+.comment-form__guest {
+    display: flex;
+    flex-direction: column;
+    align-items: flex-end;
+    gap: 6px;
+}
+
+.comment-form__guest-toggle {
+    background: none;
+    border: 0;
+    padding: 0;
+    cursor: pointer;
+    color: var(--muted-color, #8b9198);
+    white-space: nowrap;
+}
+
+.comment-form__guest-toggle:hover,
+.comment-form__guest-toggle[aria-expanded="true"] {
+    color: var(--focus-color, #f04494);
+}
+
+.comment-form__guest-fields {
+    display: flex;
+    gap: 6px;
+    align-items: center;
+    max-height: 0;
+    overflow: hidden;
+    opacity: 0;
+    transition: max-height 0.2s ease, opacity 0.15s ease;
+}
+
+.comment-form__guest-fields.is-open,
+.comment-form__guest-fields:not([hidden]) {
+    max-height: 48px;
+    opacity: 1;
 }
 
 .comment-form__guest-field {
-    width: 120px;
-    height: 32px;
+    width: 110px;
+    height: 30px;
+    font-size: 12px;
+    padding: 0 8px;
+}
+
+.comt-box .comt-textarea,
+.comt-box #comment {
+    min-height: 72px;
+    padding: 10px 12px;
+    border-radius: 8px;
+    font-size: 13px;
+    line-height: 1.5;
+    margin-bottom: 6px;
+}
+
+.comt-ctrl {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    flex-wrap: wrap;
+}
+
+.comment-form__submit {
+    height: 30px;
+    padding: 0 12px;
     font-size: 13px;
 }