Add Turnstile protection and harden export workflow

css/custom.css

@@ -3,23 +3,104 @@
 
 :root {
   --silias-radius: 14px;
+  --silias-ink: #0b1236;
+  --silias-muted: #667085;
+  --silias-primary: #3b4cca;
+  --silias-primary-dark: #25339b;
+  --silias-surface: #ffffff;
+  --silias-soft: #f3f5ff;
+  --silias-border: #e4e8f2;
 }
 
 html, body {
-  height: 100%;
+  min-height: 100%;
 }
 
 body {
   /* Bootstrap uses system font stack, keep it */
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
+  color: var(--silias-ink);
+  background:
+    radial-gradient(circle at 8% 0%, rgba(90, 103, 216, .12), transparent 28rem),
+    #f7f8fc !important;
+  background-repeat: no-repeat !important;
+  background-size: 100% 720px !important;
 }
 
 /* Navbar */
+.site-header {
+  background: rgba(255, 255, 255, .94);
+  backdrop-filter: blur(12px);
+}
+
 .navbar-brand {
   letter-spacing: 0.2px;
 }
 
+.brand-lockup {
+  display: inline-flex;
+  align-items: center;
+  gap: .85rem;
+  color: var(--silias-ink);
+  text-decoration: none;
+}
+
+.brand-logo-crop {
+  position: relative;
+  width: 126px;
+  height: 45px;
+  overflow: hidden;
+  flex: 0 0 auto;
+}
+
+.brand-logo-crop img {
+  position: absolute;
+  left: -2%;
+  top: 50%;
+  width: 104%;
+  height: auto;
+  transform: translateY(-50%);
+}
+
+.brand-divider {
+  width: 1px;
+  height: 28px;
+  background: var(--silias-border);
+}
+
+.brand-product {
+  font-size: .9rem;
+  font-weight: 700;
+  line-height: 1.15;
+}
+
+.brand-product small {
+  display: block;
+  margin-top: .18rem;
+  color: var(--silias-muted);
+  font-size: .72rem;
+  font-weight: 500;
+}
+
+.hero-eyebrow {
+  color: var(--silias-primary);
+  font-size: .78rem;
+  font-weight: 800;
+  letter-spacing: .09em;
+  text-transform: uppercase;
+}
+
+.hero-title {
+  max-width: 760px;
+  letter-spacing: -.025em;
+}
+
+.hero-copy {
+  max-width: 720px;
+  color: var(--silias-muted);
+}
+
 /* Card polish */
 .card {
   border-radius: var(--silias-radius);
@@ -28,6 +109,61 @@ body {
   box-shadow: 0 10px 25px rgba(0,0,0,.06) !important;
 }
 
+.export-shell {
+  border: 1px solid rgba(228, 232, 242, .9);
+  box-shadow: 0 18px 48px rgba(21, 31, 80, .09) !important;
+}
+
+.form-section {
+  padding: 1.25rem;
+  border: 1px solid var(--silias-border);
+  border-radius: 1rem;
+  background: var(--silias-surface);
+}
+
+.section-heading {
+  display: flex;
+  align-items: flex-start;
+  gap: .8rem;
+  margin-bottom: 1rem;
+}
+
+.section-number {
+  display: inline-grid;
+  width: 2rem;
+  height: 2rem;
+  place-items: center;
+  flex: 0 0 auto;
+  border-radius: .65rem;
+  background: var(--silias-soft);
+  color: var(--silias-primary-dark);
+  font-weight: 800;
+}
+
+.section-heading h2 {
+  margin: 0;
+  font-size: 1.05rem;
+}
+
+.section-heading p {
+  margin: .2rem 0 0;
+  color: var(--silias-muted);
+  font-size: .9rem;
+}
+
+.selection-meta {
+  color: var(--silias-muted);
+  font-size: .84rem;
+  font-weight: 600;
+}
+
+.privacy-note {
+  padding: .9rem 1rem;
+  border: 1px solid var(--silias-border);
+  border-radius: .85rem;
+  background: #fafbff;
+}
+
 /* Form */
 .form-label {
   font-weight: 600;
@@ -44,7 +180,8 @@ body {
 
 .form-control:focus,
 .form-select:focus {
-  box-shadow: 0 0 0 .2rem rgba(13,110,253,.15);
+  border-color: #7c89e8;
+  box-shadow: 0 0 0 .2rem rgba(59, 76, 202, .14);
 }
 
 /* Buttons: DO NOT globally style "button" tag */
@@ -56,17 +193,31 @@ body {
   padding-bottom: .85rem;
 }
 
+.btn-primary {
+  border-color: var(--silias-primary);
+  background: var(--silias-primary);
+}
+
+.btn-primary:hover,
+.btn-primary:focus {
+  border-color: var(--silias-primary-dark);
+  background: var(--silias-primary-dark);
+}
+
 /* Scroll panels (if you keep class from index.php) */
 .scrollWindow {
   border-radius: 1rem;
+  scrollbar-color: #b8bfdc transparent;
+  scrollbar-width: thin;
 }
 
 /* Checkbox rows */
 .form-check {
-  padding: .25rem 0;
+  padding: .3rem 0 .3rem 1.75rem;
 }
 .form-check-input {
   cursor: pointer;
+  margin-left: -1.75rem;
 }
 .form-check-label {
   cursor: pointer;
@@ -81,6 +232,11 @@ body {
 footer {
   margin-top: 0;
 }
+
+.site-footer {
+  color: var(--silias-muted);
+  background: #fff;
+}
 footer a {
   text-decoration: none;
 }
@@ -115,10 +271,24 @@ footer a:hover {
   .card-body {
     padding: 1.25rem !important;
   }
+
+  .brand-logo-crop {
+    width: 104px;
+    height: 38px;
+  }
+
+  .brand-divider,
+  .brand-product small {
+    display: none;
+  }
+
+  .form-section {
+    padding: 1rem;
+  }
 }
 /* Fix: checkboxes not clipped and never overlap text */
 .scrollWindow .form-check {
-  padding-left: 0 !important;      /* remove bootstrap offset */
+  padding: .6rem 1.1rem !important;
   margin: 0 !important;
 }
 
@@ -129,6 +299,6 @@ footer a:hover {
 
 .scrollWindow .form-check-label {
   display: block;
-  padding-left: 1.6rem;            /* space for the checkbox */
+  padding-left: 1.9rem;
   line-height: 1.4;
-}
+}