Refine calculator layout and about page

static/style.css

@@ -550,6 +550,12 @@ body.menu-open {
     display: flex;
     align-items: center;
     gap: 16px;
+    flex: 1 1 auto;
+    min-width: 0;
+}
+
+.af-brand > div {
+    min-width: 0;
 }
 
 .af-logo {
@@ -580,6 +586,10 @@ body.menu-open {
     margin: 4px 0 0;
     color: #94a3b8;
     font-size: 0.95rem;
+    max-width: 240px;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
 }
 
 .af-nav {
@@ -1249,6 +1259,77 @@ body.menu-open {
     color: #444;
 }
 
+.af-about-page .af-card {
+    background: rgba(15, 23, 42, 0.82);
+}
+
+.af-about-page h1,
+.af-about-page h2,
+.af-about-page h3 {
+    color: #f8fafc;
+}
+
+.af-about-page p,
+.af-about-page li {
+    color: #cbd5f5;
+}
+
+.af-about-kicker {
+    margin: 0 0 12px;
+    text-transform: uppercase;
+    letter-spacing: 0.18em;
+    font-size: 0.75rem;
+    color: #94a3b8;
+}
+
+.af-about-hero {
+    display: grid;
+    gap: 24px;
+    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
+    margin-bottom: 24px;
+}
+
+.af-about-grid {
+    display: grid;
+    gap: 16px;
+    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+    margin: 16px 0 24px;
+}
+
+.af-about-card {
+    padding: 16px;
+    border-radius: 16px;
+    border: 1px solid rgba(148, 163, 184, 0.2);
+    background: rgba(2, 6, 23, 0.6);
+    box-shadow: 0 12px 30px rgba(2, 6, 23, 0.3);
+}
+
+.af-about-card h3 {
+    margin-top: 0;
+}
+
+.af-about-banner {
+    display: flex;
+    flex-wrap: wrap;
+    align-items: center;
+    gap: 12px;
+    padding: 16px;
+    border-radius: 16px;
+    border: 1px solid rgba(56, 189, 248, 0.3);
+    background: rgba(56, 189, 248, 0.12);
+    margin-top: 20px;
+}
+
+.af-about-pill {
+    padding: 6px 12px;
+    border-radius: 999px;
+    border: 1px solid rgba(56, 189, 248, 0.4);
+    background: rgba(15, 23, 42, 0.7);
+    color: #e2e8f0;
+    font-size: 0.85rem;
+    font-weight: 600;
+}
+
 .highlight {
     font-weight: bold;
     color: #d32f2f;
@@ -1340,11 +1421,18 @@ main {
     box-shadow: var(--shadow);
 }
 
-h1, h2, h3 {
+body:not(.af-body) h1,
+body:not(.af-body) h2,
+body:not(.af-body) h3 {
     color: var(--text-900);
 }
 
-.about_us_text, p, label, th, td, a {
+body:not(.af-body) .about_us_text,
+body:not(.af-body) p,
+body:not(.af-body) label,
+body:not(.af-body) th,
+body:not(.af-body) td,
+body:not(.af-body) a {
     color: var(--text-700);
 }
 
@@ -1359,14 +1447,22 @@ a:hover {
 }
 
 /* Inputs */
-input[type="text"], input[type="number"], textarea, select, #search {
+body:not(.af-body) input[type="text"],
+body:not(.af-body) input[type="number"],
+body:not(.af-body) textarea,
+body:not(.af-body) select,
+body:not(.af-body) #search {
     border: 1px solid var(--border);
     background-color: #f8fafc;
     border-radius: 10px;
     padding: 10px 14px;
 }
 
-input[type="text"]:focus, input[type="number"]:focus, textarea:focus, select:focus, #search:focus {
+body:not(.af-body) input[type="text"]:focus,
+body:not(.af-body) input[type="number"]:focus,
+body:not(.af-body) textarea:focus,
+body:not(.af-body) select:focus,
+body:not(.af-body) #search:focus {
     border-color: var(--primary);
     box-shadow: 0 0 0 4px var(--primary-50);
 }