diff --git a/app/static/css/auth.css b/app/static/css/auth.css
index 70da6cd..31081bb 100644
--- a/app/static/css/auth.css
+++ b/app/static/css/auth.css
@@ -130,3 +130,20 @@
   color: var(--accent) !important;
   border-color: var(--accent) !important;
 }
+
+
+/* --- Mobile (≤480px) -------------------------------------------------- */
+
+@media (max-width: 480px) {
+  /* The card is already width:360px;max-width:100% so it fills the
+     screen — just tighten internal padding to free up vertical space
+     for the keyboard on iOS Safari (which eats half the viewport). */
+  .auth-card { padding: 20px 18px; }
+  .auth-card__brand { font-size: 14px; }
+  .auth-card__lede { font-size: 12px; }
+  .auth-card input,
+  .auth-card button[type="submit"] {
+    font-size: 14px;     /* avoids iOS Safari zoom-on-focus */
+    padding: 10px 12px;
+  }
+}
diff --git a/app/static/css/dashboard.css b/app/static/css/dashboard.css
index 956157d..aae9b6a 100644
--- a/app/static/css/dashboard.css
+++ b/app/static/css/dashboard.css
@@ -226,3 +226,42 @@
   vertical-align: middle;
   user-select: none;
 }
+
+
+/* --- Mobile (≤480px) -------------------------------------------------- */
+
+@media (max-width: 480px) {
+  /* Hide secondary indicator-table columns: Label, Ccy, 1y, anchor,
+     as-of. The cells are tagged with .mobile-hide in indicators.html;
+     this rule keeps display intent in CSS while letting the template
+     handle the conditional anchor column. Symbol / Price / 1d / 1m
+     remain — the four numbers a phone user actually wants. */
+  .dense .mobile-hide { display: none; }
+
+  /* Tighter cell padding so the four remaining columns fit
+     comfortably on a 360px viewport. */
+  .dense th, .dense td {
+    padding: 4px 6px;
+    font-size: 11px;
+  }
+  /* Symbol column gets a touch more breathing room — it's the
+     identifying anchor. */
+  .dense td.label { font-weight: 600; }
+
+  /* Group-tabs strip already has overflow-x:auto; widen the tap
+     targets so swipe-scrolling on a touchscreen feels natural. */
+  .group-tabs button {
+    padding: 8px 14px;
+    font-size: 11.5px;
+    white-space: nowrap;
+  }
+
+  /* Aggregate-read summary header tightens — stack the label above
+     the timestamp to avoid wrapping at awkward points. */
+  .ind-summary__head {
+    flex-direction: column;
+    align-items: flex-start;
+    gap: 2px;
+  }
+  .ind-summary__body { font-size: 12px; }
+}
diff --git a/app/static/css/log-chat.css b/app/static/css/log-chat.css
index 6e847ec..895953b 100644
--- a/app/static/css/log-chat.css
+++ b/app/static/css/log-chat.css
@@ -280,3 +280,46 @@
 }
 .chat-form button:hover:not(:disabled) { background: var(--accent); color: var(--bg); }
 .chat-form button:disabled { opacity: 0.4; cursor: not-allowed; }
+
+
+/* --- Mobile (≤480px) -------------------------------------------------- */
+
+@media (max-width: 480px) {
+  /* Trim horizontal padding so the markdown column uses the screen
+     width. The existing 1100px rule already capped the column at
+     76ch; we just shave the surrounding gutter. */
+  .log-content { padding: 0 4px; font-size: 13.5px; }
+  .log-content h2 { font-size: 16px; }
+  .log-content h3 { font-size: 14px; }
+
+  /* Chat bubbles edge-to-edge so the conversation reads like a
+     mobile messenger thread. */
+  .chat-msg {
+    max-width: 100%;
+    padding: 8px 10px;
+    font-size: 13px;
+  }
+  .chat-msg--user { margin-right: 0; }
+  .chat-msg--assistant { margin-left: 0; }
+
+  /* Chat input row stacks: textarea full-width, button below. */
+  .chat-form {
+    flex-direction: column;
+    gap: 6px;
+    padding: 8px;
+  }
+  .chat-form textarea {
+    width: 100%;
+    min-height: 56px;
+    font-size: 14px;        /* avoids iOS Safari zoom-on-focus */
+  }
+  .chat-form button {
+    width: 100%;
+    padding: 10px;
+    font-size: 12px;
+  }
+
+  .chat-header { padding: 8px 10px; }
+  .chat-title { font-size: 12px; }
+  .chat-hint { font-size: 10px; }
+}
diff --git a/app/static/css/news.css b/app/static/css/news.css
index 8827339..3fb4bc6 100644
--- a/app/static/css/news.css
+++ b/app/static/css/news.css
@@ -84,3 +84,40 @@
 }
 .news-tag--clear { color: var(--dim); border-style: dashed; }
 .news-tag--clear:hover { color: var(--negative); border-color: var(--negative); }
+
+
+/* --- Mobile (≤480px) -------------------------------------------------- */
+
+@media (max-width: 480px) {
+  /* The 720px rule already collapsed to age | source | title and
+     hid the right-side tag chips. At ≤480 we drop the source column
+     too and let the title flow under the age, with source as a small
+     line below the title — saves another ~100px of horizontal room. */
+  .news-row {
+    grid-template-columns: 50px minmax(0, 1fr);
+    gap: 8px;
+    padding: 6px 10px;
+  }
+  .news-row .source {
+    grid-column: 2;
+    grid-row: 2;
+    font-size: 10.5px;
+  }
+  .news-row .title {
+    grid-column: 2;
+    grid-row: 1;
+    font-size: 12.5px;
+    line-height: 1.35;
+  }
+
+  /* Tag filter strip wraps onto multiple rows on a phone. */
+  .news-tags {
+    flex-wrap: wrap;
+    gap: 6px;
+    padding: 6px 8px;
+  }
+  .news-tag {
+    padding: 4px 8px;
+    font-size: 11px;
+  }
+}
diff --git a/app/static/css/panels.css b/app/static/css/panels.css
index 18293a5..4d2d9a3 100644
--- a/app/static/css/panels.css
+++ b/app/static/css/panels.css
@@ -90,3 +90,19 @@ table.dense tr:hover td { background: color-mix(in srgb, var(--accent) 5%, trans
   transition: opacity 0.2s;
 }
 .htmx-request .htmx-indicator { opacity: 1; }
+
+
+/* --- Mobile (≤480px) -------------------------------------------------- */
+
+@media (max-width: 480px) {
+  .panel-header {
+    padding: 8px 10px;
+    gap: 8px;
+  }
+  .panel-header .title { font-size: 12px; }
+  .panel-header .meta { font-size: 10px; }
+  .panel-body { padding: 4px 6px; }
+  /* Scroll panels lose some vertical room on small screens so the
+     stacked layout doesn't push log/news off the fold. */
+  .panel-body--scroll { max-height: 60vh; }
+}
diff --git a/app/static/css/portfolio.css b/app/static/css/portfolio.css
index 89ffb32..cdf0417 100644
--- a/app/static/css/portfolio.css
+++ b/app/static/css/portfolio.css
@@ -374,3 +374,33 @@ details[open] .pf-analysis__head-left::before { content: "▾ "; }
   color: var(--muted);
   background: color-mix(in srgb, var(--accent) 4%, transparent);
 }
+
+
+/* --- Mobile (≤480px) -------------------------------------------------- */
+
+@media (max-width: 480px) {
+  /* The existing 640px breakpoint already moves the overall grid to
+     2 cols. At ≤480 we keep 2 cols but tighten gap so the stat
+     values don't crowd the labels next to them. */
+  .pf-overall__grid { gap: 4px 12px; }
+  .pf-stat-value { font-size: 14px; }
+
+  /* Action buttons wrap to multiple rows instead of squishing onto
+     one. flex-wrap was already set above; ensure each button has a
+     comfortable tap target. */
+  .pf-actions { flex-wrap: wrap; gap: 6px; }
+  .pf-actions button {
+    flex: 1 1 auto;
+    padding: 8px 12px;
+    font-size: 11.5px;
+  }
+
+  /* Pill row stays wrapped; just give pills a small min-width so
+     two-character tags (USD, EUR) don't hug each other awkwardly. */
+  .pf-pill { padding: 3px 7px; }
+
+  /* The inline composer's input gets the full width — the desktop's
+     intrinsic-width sizing leaves it tiny on a phone. */
+  .pf-add__line { flex-wrap: wrap; gap: 6px; }
+  .pf-add__line input, .pf-add__line textarea { width: 100%; }
+}
diff --git a/app/static/css/public.css b/app/static/css/public.css
index 0e0e361..9b1f753 100644
--- a/app/static/css/public.css
+++ b/app/static/css/public.css
@@ -715,3 +715,29 @@ a.btn-secondary:hover { color: var(--accent); border-color: var(--accent); }
   color: var(--accent);
   outline: none;
 }
+
+
+/* --- Mobile (≤480px) -------------------------------------------------- */
+
+@media (max-width: 480px) {
+  /* Hero headline already uses clamp(); shrink its lower bound so a
+     two-line headline doesn't push the CTAs below the fold on a
+     360px screen. */
+  .hero__headline { font-size: clamp(22px, 6vw, 32px); }
+  .hero__subhead { font-size: 14px; }
+
+  /* CTAs stack full-width on phones — easier tap targets. */
+  .hero__ctas { flex-direction: column; align-items: stretch; }
+  .btn-primary, .btn-secondary {
+    width: 100%;
+    text-align: center;
+    padding: 12px 18px;
+  }
+
+  /* Tier cards (pricing page) stack on phones. */
+  .tier-grid { grid-template-columns: 1fr; gap: 16px; }
+  .tier-card { padding: 18px; }
+
+  /* Tighten public-page outer padding. */
+  .public-shell { padding: 16px 12px; }
+}
diff --git a/app/static/css/settings.css b/app/static/css/settings.css
index 1d6c0e5..819d69b 100644
--- a/app/static/css/settings.css
+++ b/app/static/css/settings.css
@@ -379,3 +379,38 @@
   box-sizing: border-box;
 }
 .modal-input:focus { border-color: var(--accent); }
+
+
+/* --- Mobile (≤480px) -------------------------------------------------- */
+
+@media (max-width: 480px) {
+  /* Form rows stack: label above value instead of side-by-side. The
+     desktop layout uses a fixed 110px label column that pinches the
+     value column unbearably on a phone. */
+  .settings-row {
+    flex-direction: column;
+    align-items: stretch;
+    gap: 4px;
+    padding: 10px 0;
+  }
+  .settings-row__label {
+    width: auto;
+    font-size: 11px;
+    text-transform: uppercase;
+    letter-spacing: 0.06em;
+  }
+  .settings-select {
+    width: 100%;
+    font-size: 14px;     /* avoids iOS Safari zoom-on-focus */
+  }
+
+  /* The two-column import picker becomes single column. */
+  .import-choice {
+    flex: 1 1 100%;
+    min-width: 0;
+  }
+
+  /* Buttons get a full-width tap target. */
+  .settings-btn { width: 100%; padding: 10px; }
+  .settings-icon-btn { width: 100%; justify-content: center; }
+}
diff --git a/app/templates/partials/indicators.html b/app/templates/partials/indicators.html
index 0ae1e1f..70aaab0 100644
--- a/app/templates/partials/indicators.html
+++ b/app/templates/partials/indicators.html
@@ -20,11 +20,11 @@
 <table class="dense">
   <thead>
     <tr>
-      <th>Symbol</th><th>Label</th>
-      <th class="num">Price</th><th>Ccy</th>
-      <th class="num">1d</th><th class="num">1m</th><th class="num">1y</th>
-      {% if has_anchor %}<th class="num">anchor</th>{% endif %}
-      <th>as-of</th>
+      <th>Symbol</th><th class="mobile-hide">Label</th>
+      <th class="num">Price</th><th class="mobile-hide">Ccy</th>
+      <th class="num">1d</th><th class="num">1m</th><th class="num mobile-hide">1y</th>
+      {% if has_anchor %}<th class="num mobile-hide">anchor</th>{% endif %}
+      <th class="mobile-hide">as-of</th>
     </tr>
   </thead>
   <tbody>
@@ -46,22 +46,22 @@
       <td class="label has-tip" title="{{ q.symbol }}{% if tip %} — {{ tip }}{% endif %}">
         {{ short_sym }}
       </td>
-      <td {% if tip %}title="{{ tip }}"{% endif %}>{{ q.label or "" }}</td>
+      <td class="mobile-hide" {% if tip %}title="{{ tip }}"{% endif %}>{{ q.label or "" }}</td>
       <td class="num">{{ q.price | price }}</td>
-      <td class="neu">{{ q.currency or "" }}</td>
+      <td class="neu mobile-hide">{{ q.currency or "" }}</td>
       {% for k in ["1d","1m","1y"] %}
         {% set v = q.changes.get(k) if q.changes else None %}
-        <td class="num {% if v is none %}neu{% elif v >= 0 %}pos{% else %}neg{% endif %}">
+        <td class="num {% if k == '1y' %}mobile-hide {% endif %}{% if v is none %}neu{% elif v >= 0 %}pos{% else %}neg{% endif %}">
           {% if v is none %}—{% else %}{{ "%+.2f"|format(v) }}%{% endif %}
         </td>
       {% endfor %}
       {% if has_anchor %}
         {% set va = q.changes.get('anchor') if q.changes else None %}
-        <td class="num {% if va is none %}neu{% elif va >= 0 %}pos{% else %}neg{% endif %}">
+        <td class="num mobile-hide {% if va is none %}neu{% elif va >= 0 %}pos{% else %}neg{% endif %}">
           {% if va is none %}—{% else %}{{ "%+.2f"|format(va) }}%{% endif %}
         </td>
       {% endif %}
-      <td class="neu">{{ q.as_of or "" }}</td>
+      <td class="neu mobile-hide">{{ q.as_of or "" }}</td>
     </tr>
     {% endif %}
   {% endfor %}