diff --git a/styles/components/site-footer.css b/styles/components/site-footer.css
index d38d6f2..9a1fa26 100644
--- a/styles/components/site-footer.css
+++ b/styles/components/site-footer.css
@@ -1,30 +1,46 @@
 /* Footer styles */
 
 .site-footer {
-    border-bottom: 1rem solid var(--color-orange, #F26B53);
+    border-bottom: 1rem solid var(--color-orange, #f26b53);
 
-    a { @apply text-white transition-colors duration-300 hover:text-secondary-400 focus-visible:text-secondary-400; }
-
-    .widget {
-        li { @apply text-16px my-1 mb-2 leading-4; }
-
-        h4 { @apply font-bold text-18px text-secondary mb-2; }
+    a {
+        @apply text-white transition-colors duration-300 hover:text-secondary-400 focus-visible:text-secondary-400;
     }
 
-    .menu-footer-menu-container { @apply grow; }
+    .widget {
+        li {
+            @apply text-16px my-1 mb-2 leading-4;
+        }
+
+        h4 {
+            @apply font-bold text-18px text-secondary mb-2;
+        }
+    }
+
+    .menu-footer-menu-container {
+        @apply grow;
+    }
 
     .copyright {
-        p { @apply text-white leading-none m-0 p-0; }
+        p {
+            @apply text-white leading-none m-0 p-0;
+        }
 
-        a { @apply text-white hover:text-primary-500 underline underline-offset-2; }
+        a {
+            @apply text-white hover:text-primary-500 underline underline-offset-2;
+        }
     }
 
     .contact__item {
         @apply flex justify-start items-start font-light text-white text-14px mb-2;
 
-        p { @apply m-0 p-0; }
+        p {
+            @apply m-0 p-0;
+        }
 
-        a { @apply text-white hover:text-secondary-400 focus-visible:text-secondary-400; }
+        a {
+            @apply text-white hover:text-secondary-400 focus-visible:text-secondary-400;
+        }
 
         &::before {
             @apply inline-block mr-2;
@@ -35,13 +51,16 @@
         }
 
         &.contact__phone::before {
-            background: url("../../static/img/footer-phone.svg") no-repeat center center;
+            background: url("../../static/img/footer-phone.svg") no-repeat
+                center center;
         }
         &.contact__email::before {
-            background: url("../../static/img/footer-email.svg") no-repeat center center;
+            background: url("../../static/img/footer-email.svg") no-repeat
+                center center;
         }
         &.contact__address::before {
-            background: url("../../static/img/footer-map.svg") no-repeat center center;
+            background: url("../../static/img/footer-map.svg") no-repeat center
+                center;
             padding-top: 2rem;
         }
     }
@@ -49,32 +68,118 @@
 
 @media (max-width: 767px) {
     .site-footer {
-        padding-block: 2.25rem 1.25rem;
+        border-bottom-width: clamp(4.0625rem, 20.4vw, 5.125rem);
+        font-size: clamp(0.875rem, 3.98vw, 1rem);
+        min-height: clamp(34rem, 167.4vw, 42.0625rem);
+        padding-block: clamp(2.375rem, 11.94vw, 3rem)
+            clamp(1.125rem, calc(12.2vw - 1.3125rem), 1.75rem);
     }
 
     .site-footer > .container {
-        gap: 1.5rem 1rem;
-        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
-        padding-inline: 1rem;
+        display: grid;
+        gap: 0 clamp(0.8125rem, 3.98vw, 1rem);
+        grid-template-columns: minmax(0, 1fr) auto;
+        padding-inline: clamp(1.59375rem, 7.96vw, 2rem);
     }
 
-    .site-footer .site-footer__logo {
-        max-width: 6rem;
+    .site-footer > .container > div:first-child {
+        grid-column: 1;
+        grid-row: 1;
     }
 
-    .site-footer .widget li {
-        font-size: var(--text-14px);
-        line-height: 1.1;
-        margin-bottom: 0.4rem;
+    .site-footer #footer-header {
+        margin: 0;
+        max-width: clamp(9.75rem, 48.76vw, 12.25rem);
     }
 
-    .site-footer .widget h4 {
-        font-size: var(--text-16px);
-        margin-bottom: 0.5rem;
+    .site-footer #footer-nav {
+        grid-column: 1 / -1;
+        grid-row: 2;
+        margin-top: clamp(1.5625rem, 7.71vw, 1.9375rem);
     }
 
-    .site-footer .text-right {
-        align-items: flex-start;
-        text-align: left;
+    .site-footer .site-footer__nav-list {
+        display: grid;
+        gap: clamp(0.625rem, 3.23vw, 0.8125rem) clamp(1.59375rem, 7.96vw, 2rem);
+        grid-auto-flow: column;
+        grid-template-rows: repeat(3, auto);
+    }
+
+    .site-footer .site-footer__nav-item {
+        margin-bottom: 0;
+    }
+
+    .site-footer #footer-nav + div {
+        grid-column: 1 / -1;
+        grid-row: 3;
+        margin-top: clamp(1.25rem, 6.22vw, 1.5625rem);
+    }
+
+    .site-footer #footer-description {
+        font-size: clamp(1rem, 4.98vw, 1.25rem);
+        line-height: 1.2;
+        max-width: 21rem;
+    }
+
+    .site-footer .contact__item {
+        font-size: clamp(0.75rem, 3.48vw, 0.875rem);
+    }
+
+    .site-footer .contact__address {
+        margin-top: clamp(0.875rem, 4.48vw, 1.125rem);
+    }
+
+    .site-footer .contact__email,
+    .site-footer .contact__phone {
+        margin-top: clamp(0.8125rem, 3.98vw, 1rem);
+    }
+
+    .site-footer .contact__item::before {
+        height: clamp(1.1875rem, 5.97vw, 1.5rem);
+        margin-right: clamp(0.375rem, 1.99vw, 0.5rem);
+        width: clamp(1.1875rem, 5.97vw, 1.5rem);
+    }
+
+    .site-footer .contact__address::before {
+        padding-top: clamp(1.59375rem, 7.96vw, 2rem);
+    }
+
+    .site-footer > .container > .text-right {
+        display: contents;
+    }
+
+    .site-footer x-back-to-top {
+        align-self: start;
+        grid-column: 2;
+        grid-row: 1;
+    }
+
+    .site-footer #backToTopBtn {
+        height: clamp(2rem, 9.95vw, 2.5rem);
+        padding: 0;
+        width: clamp(2rem, 9.95vw, 2.5rem);
+    }
+
+    .site-footer .social-links {
+        grid-column: 1 / -1;
+        grid-row: 4;
+        justify-content: flex-end;
+        margin-top: clamp(0.5rem, 2.49vw, 0.625rem);
+    }
+
+    .site-footer .social-icons {
+        --size: clamp(1.1875rem, 5.97vw, 1.5rem);
+    }
+
+    .site-footer .social-links a {
+        margin-right: clamp(0.8125rem, 3.98vw, 1rem);
+    }
+
+    .site-footer .copyright {
+        grid-column: 1 / -1;
+        grid-row: 5;
+        margin-top: clamp(0.8125rem, 4.23vw, 1.0625rem);
+        padding-block: 0;
+        text-align: center;
     }
 }
diff --git a/tests/mobile-homepage.spec.js b/tests/mobile-homepage.spec.js
index 9f92f6d..bc5c90a 100644
--- a/tests/mobile-homepage.spec.js
+++ b/tests/mobile-homepage.spec.js
@@ -697,6 +697,69 @@ test("configured footer channels use the prepared SVG icons", async ({
     ).toBeVisible();
 });
 
+test("mobile footer matches the reference hierarchy", async ({ page }) => {
+    await page.goto(homepage);
+
+    const footer = page.locator(".site-footer");
+    const footerBox = await getBox(footer);
+    const logo = await getBox(footer.locator(".site-footer__logo-image"));
+    const backToTop = await getBox(footer.locator("#backToTopBtn"));
+    const nav = await getBox(footer.locator("#footer-nav"));
+    const contact = await getBox(footer.locator(".contact"));
+
+    expectNear(footerBox.height, 673, 12);
+    expectNear(logo.y, backToTop.y, 8);
+    expect(nav.y).toBeGreaterThan(logo.y + logo.height);
+    expect(contact.y).toBeGreaterThan(nav.y + nav.height);
+});
+
+test("mobile footer scales down and remains contained", async ({ page }) => {
+    for (const width of [320, 767]) {
+        await page.setViewportSize({ width, height: 900 });
+        await page.goto(homepage);
+
+        const footer = page.locator(".site-footer");
+        const footerBox = await getBox(footer);
+        const logo = await getBox(footer.locator(".site-footer__logo-image"));
+        const backToTop = await getBox(footer.locator("#backToTopBtn"));
+        const nav = await getBox(footer.locator("#footer-nav"));
+        const contact = await getBox(footer.locator(".contact"));
+        const social = await getBox(footer.locator(".social-links"));
+        const copyright = await getBox(footer.locator(".copyright"));
+        const expectedHeight = Math.min(width, 402) * (673 / 402);
+
+        expectNear(footerBox.height, expectedHeight, 12);
+        expectNear(logo.y, backToTop.y, 8);
+        expect(nav.y).toBeGreaterThan(logo.y + logo.height);
+        expect(contact.y).toBeGreaterThan(nav.y + nav.height);
+        expect(social.y).toBeGreaterThan(contact.y + contact.height);
+        expect(copyright.y).toBeGreaterThan(social.y + social.height);
+        expect(footerBox.x).toBeGreaterThanOrEqual(0);
+        expect(footerBox.x + footerBox.width).toBeLessThanOrEqual(width);
+        expect(
+            await page.evaluate(() => document.documentElement.scrollWidth),
+        ).toBeLessThanOrEqual(width);
+    }
+});
+
+test("footer restores its four-column desktop layout at 768px", async ({
+    page,
+}) => {
+    await page.setViewportSize({ width: 768, height: 900 });
+    await page.goto(homepage);
+
+    const footer = page.locator(".site-footer");
+    const outer = footer.locator(":scope > .container");
+
+    await expect(footer).toHaveCSS("border-bottom-width", "16px");
+    await expect(footer).toHaveCSS("padding-top", "64px");
+    await expect(outer).toHaveCSS("grid-template-columns", /.+ .+ .+ .+/);
+    await expect(outer.locator(":scope > .text-right")).toHaveCSS(
+        "display",
+        "flex",
+    );
+});
+
 test("mobile homepage has no automated accessibility violations", async ({
     page,
 }) => {