diff --git a/docs/book.toml b/docs/book.toml
index 838fd9d..d9129e2 100644
--- a/docs/book.toml
+++ b/docs/book.toml
@@ -11,6 +11,8 @@ build-dir = "../target/docs"
 create-missing = false
 
 [output.html]
-default-theme = "light"
+default-theme = "navy"
+preferred-dark-theme = "navy"
+additional-css = ["theme/lore.css"]
 fold = { enable = false }
 search = { enable = false }
diff --git a/docs/src/index.md b/docs/src/index.md
index 3875500..68397f3 100644
--- a/docs/src/index.md
+++ b/docs/src/index.md
@@ -1,4 +1,4 @@
-# Kaptan Developer Manual
+# Kaptan documentation
 
 Kaptan is an embedded Rust flight-controller project. This manual is the
 single source of project documentation: board support, safety boundaries,
@@ -9,7 +9,7 @@ The checked-in firmware is telemetry-only. It does not expose physical motor
 authority, and no document in this site should be read as a physical-flight
 release claim.
 
-## Start here
+## Index
 
 - New contributors should read [Getting started](getting-started.md).
 - Board work belongs under [Boards](boards/index.md).
diff --git a/docs/theme/lore.css b/docs/theme/lore.css
new file mode 100644
index 0000000..e80a272
--- /dev/null
+++ b/docs/theme/lore.css
@@ -0,0 +1,223 @@
+/*
+ * Static, text-first presentation inspired by lore.kernel.org.
+ * Palette: Orkavian's published black, silver, and green site tokens.
+ */
+:root,
+html.light,
+html.rust,
+html.coal,
+html.navy,
+html.ayu {
+    --background: #050505;
+    --background-secondary: #0a0a0a;
+    --text: #cccccc;
+    --text-muted: #888888;
+    --accent: #00ff41;
+    --border: #333333;
+}
+
+html,
+body {
+    background: var(--background);
+    color: var(--text);
+    font-family: "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Monaco,
+        Consolas, "Liberation Mono", monospace;
+    font-size: 15px;
+    line-height: 1.65;
+}
+
+* {
+    animation: none !important;
+    border-radius: 0 !important;
+    box-shadow: none !important;
+    transition: none !important;
+}
+
+/* Replace mdBook's interactive chrome with a quiet, static masthead. */
+#mdbook-sidebar,
+#mdbook-sidebar-toggle-anchor,
+#mdbook-menu-bar-hover-placeholder,
+#mdbook-help-container,
+#mdbook-menu-bar .left-buttons,
+#mdbook-menu-bar .right-buttons {
+    display: none !important;
+}
+
+#mdbook-page-wrapper,
+.page-wrapper,
+.page {
+    margin-left: 0 !important;
+    transform: none !important;
+}
+
+#mdbook-menu-bar {
+    background: var(--background-secondary);
+    border-bottom: 1px solid var(--border);
+    display: block;
+    height: auto;
+    margin: 0;
+    min-height: 0;
+    padding: 0.55rem max(1rem, calc((100vw - 78ch) / 2));
+    position: static;
+}
+
+#mdbook-menu-bar .menu-title {
+    color: var(--text);
+    font-family: inherit;
+    font-size: 0.85rem;
+    font-weight: 700;
+    letter-spacing: 0.08em;
+    line-height: 1.4;
+    text-transform: uppercase;
+}
+
+.content {
+    margin: 0 auto;
+    max-width: 78ch;
+    padding: 1.75rem 1rem 3rem;
+}
+
+.content main {
+    margin: 0;
+    max-width: none;
+}
+
+h1,
+h2,
+h3,
+h4 {
+    color: var(--text);
+    font-family: inherit;
+    font-weight: 700;
+    line-height: 1.35;
+}
+
+h1 {
+    font-size: 1.25rem;
+    margin: 0 0 1.25rem;
+}
+
+h2 {
+    border-bottom: 1px solid var(--border);
+    font-size: 1rem;
+    margin: 2rem 0 0.75rem;
+    padding-bottom: 0.35rem;
+}
+
+h3,
+h4 {
+    font-size: 1rem;
+    margin: 1.5rem 0 0.5rem;
+}
+
+a {
+    color: var(--accent);
+    text-decoration: underline;
+    text-underline-offset: 0.15em;
+}
+
+a.header {
+    color: inherit;
+    text-decoration: none;
+}
+
+p,
+ul,
+ol,
+table,
+blockquote,
+pre {
+    margin: 0 0 1rem;
+}
+
+ul,
+ol {
+    padding-left: 1.5rem;
+}
+
+li + li {
+    margin-top: 0.2rem;
+}
+
+code,
+pre,
+kbd {
+    font-family: inherit;
+}
+
+code {
+    background: var(--background-secondary);
+    color: var(--text);
+    padding: 0.05rem 0.25rem;
+}
+
+pre {
+    background: var(--background-secondary);
+    border: 1px solid var(--border);
+    overflow-x: auto;
+    padding: 0.75rem;
+}
+
+pre code {
+    padding: 0;
+}
+
+table {
+    border-collapse: collapse;
+    width: 100%;
+}
+
+th,
+td {
+    border: 1px solid var(--border);
+    padding: 0.35rem 0.5rem;
+    text-align: left;
+}
+
+th {
+    color: var(--text);
+    font-weight: 700;
+}
+
+blockquote {
+    border-left: 2px solid var(--border);
+    color: var(--text-muted);
+    margin-left: 0;
+    padding-left: 0.8rem;
+}
+
+hr {
+    border: 0;
+    border-top: 1px solid var(--border);
+    margin: 1.5rem 0;
+}
+
+.nav-wrapper {
+    border-top: 1px solid var(--border);
+    margin-top: 2rem;
+    padding-top: 0.75rem;
+}
+
+.nav-chapters {
+    background: none;
+}
+
+.nav-chapters a {
+    color: var(--accent);
+}
+
+@media print {
+    html,
+    body {
+        background: #ffffff;
+        color: #000000;
+    }
+
+    #mdbook-menu-bar {
+        display: none;
+    }
+
+    a {
+        color: #000000;
+    }
+}