Redesign contact form as comprehensive quote request

Form now has sections: contact info, rack units (1U/2U/4U/full),
connection speed (1G-100G), redundant port, BGP, site-to-site VPN,
and add-on services (Anycast DNS, block storage, S3 backups, remote hands).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

style.css

@@ -747,6 +747,102 @@ a:hover {
     min-height: 120px;
 }
 
+.form-group select {
+    background: var(--color-white);
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius);
+    padding: 10px 14px;
+    font-size: 0.95rem;
+    font-family: inherit;
+    color: var(--color-text);
+    transition: border-color 0.2s;
+    appearance: none;
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
+    background-repeat: no-repeat;
+    background-position: right 12px center;
+    padding-right: 36px;
+}
+
+.form-group select:focus {
+    outline: none;
+    border-color: var(--color-primary);
+    box-shadow: 0 0 0 3px rgba(232, 93, 74, 0.1);
+}
+
+.form-section-title {
+    grid-column: 1 / -1;
+    font-size: 1.05rem;
+    font-weight: 700;
+    color: var(--color-text-heading);
+    padding-top: 20px;
+    margin-bottom: -4px;
+    border-top: 1px solid var(--color-border);
+}
+
+.form-section-title:first-child {
+    border-top: none;
+    padding-top: 0;
+}
+
+.checkbox-group {
+    grid-column: 1 / -1;
+    display: flex;
+    flex-wrap: wrap;
+    gap: 10px;
+}
+
+.checkbox-label {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    font-size: 0.9rem;
+    color: var(--color-text);
+    cursor: pointer;
+    padding: 8px 14px;
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius);
+    transition: border-color 0.2s, background 0.2s;
+    user-select: none;
+}
+
+.checkbox-label:hover {
+    border-color: var(--color-primary-light);
+    background: rgba(232, 93, 74, 0.03);
+}
+
+.checkbox-label:has(input:checked) {
+    border-color: var(--color-primary);
+    background: rgba(232, 93, 74, 0.06);
+}
+
+.checkbox-label input[type="checkbox"] {
+    accent-color: var(--color-primary);
+    width: 16px;
+    height: 16px;
+    cursor: pointer;
+}
+
+.unit-row {
+    grid-column: 1 / -1;
+    display: grid;
+    grid-template-columns: 1fr 100px;
+    gap: 12px;
+    align-items: end;
+}
+
+.unit-row .form-group {
+    margin: 0;
+}
+
+.unit-row input[type="number"] {
+    text-align: center;
+    -moz-appearance: textfield;
+}
+
+.unit-row input[type="number"]::-webkit-inner-spin-button {
+    opacity: 1;
+}
+
 .btn-submit {
     grid-column: 1 / -1;
     margin-top: 4px;