diff --git a/bergamot/favicon.svg b/bergamot/favicon.svg
new file mode 100644
index 0000000..d963e50
--- /dev/null
+++ b/bergamot/favicon.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
+  <!-- Silent Mode — two interlocking chain links. Left link muted so the right
+       (acid) reads as the accent; overlap is honest, not faked with clipping. -->
+  <title>Silent Mode</title>
+  <rect x="3.5" y="10" width="15" height="12" rx="6" ry="6"
+        fill="none" stroke="#8b98a9" stroke-width="2.5"/>
+  <rect x="13.5" y="10" width="15" height="12" rx="6" ry="6"
+        fill="none" stroke="#d6ff3d" stroke-width="2.5"/>
+</svg>
diff --git a/bergamot/shared.css b/bergamot/shared.css
new file mode 100644
index 0000000..55d04a1
--- /dev/null
+++ b/bergamot/shared.css
@@ -0,0 +1,178 @@
+/* Silent Mode — shared design tokens and component styles.
+   Every page under silentmode.st links this file so a colour or a control style
+   only has to change once. Page-specific bits (search UI, download listing,
+   registration modal) stay in the page. */
+
+:root{
+  --bg:#0b0e14;
+  --panel:#141a24;
+  --panel2:#18202c;
+  --line:rgba(255,255,255,.09);
+  --ink:#e7eaf1;
+  --mut:#8b98a9;
+  --dim:#7a8496;   /* was #5e6678 — 3.4:1, failed AA for fine print */
+  --acid:#d6ff3d;
+  /* semantic accents used to colour-code content sources across pages */
+  --chain:#d6ff3d;
+  --sia:#b39ddb;
+  --srv:#4fd1a5;
+  --tor:#a98bd8;
+  --ok:#4fd1a5;
+  --taken:#f6768a;
+  --warn:#ffc75f;
+}
+
+*{box-sizing:border-box}
+html{scroll-behavior:smooth}
+body{
+  margin:0;
+  background:radial-gradient(1100px 560px at 50% -12%,#16202e,var(--bg));
+  color:var(--ink);
+  font:16px/1.65 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
+  min-height:100vh;
+}
+a{color:var(--acid)}
+
+/* ============ top nav ============ */
+/* Inlined by each page. Sticky so navigation stays reachable on long pages.
+   The `.here` class marks the current section. */
+.topnav{
+  position:sticky;top:0;z-index:20;
+  display:flex;gap:2px;align-items:center;flex-wrap:wrap;
+  padding:10px 1.2rem;
+  background:rgba(11,14,20,.82);
+  backdrop-filter:blur(10px);
+  border-bottom:1px solid var(--line);
+}
+.topnav .brand{
+  font-weight:600;color:var(--ink);text-decoration:none;
+  margin-right:14px;font-size:15px;letter-spacing:.2px;
+}
+.topnav .brand .g{color:var(--acid)}
+.topnav a{
+  color:var(--mut);text-decoration:none;
+  padding:9px 12px;border-radius:8px;font-size:14px;
+}
+.topnav a:hover{color:var(--ink);background:var(--panel)}
+.topnav a.here{color:var(--acid);background:rgba(214,255,61,.08)}
+
+/* ============ layout ============ */
+.wrap{max-width:980px;margin:0 auto;padding:0 1.2rem}
+.wrap.narrow{max-width:820px}
+
+header.hero{text-align:center;padding:4.5rem 1.2rem 2.4rem}
+header.hero .mark{font-size:58px;line-height:1}
+h1{font-size:clamp(2rem,5vw,3rem);margin:.5rem 0 .3rem;letter-spacing:.4px}
+h1 .g{color:var(--acid)}
+.tag{color:var(--mut);font-size:1.1rem;max-width:660px;margin:.4rem auto 0}
+
+section{padding:2.8rem 0;border-top:1px solid var(--line)}
+section.plain{border-top:none}
+h2{font-size:1.55rem;margin:0 0 .4rem}
+h3{font-size:1.05rem;margin:0 0 .3rem}
+.lede{color:var(--mut);margin:0 0 1.6rem;max-width:680px}
+
+.cta{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:1.7rem}
+
+/* ============ controls ============ */
+.btn{
+  display:inline-block;text-decoration:none;
+  padding:11px 20px;border-radius:999px;
+  background:var(--panel2);color:var(--ink);font-size:14.5px;
+  border:1px solid var(--line);cursor:pointer;font-family:inherit;
+}
+.btn.ghost{background:transparent;border-color:var(--line);color:var(--ink)}
+.btn.acid{background:var(--acid);color:#0b0e14;font-weight:600;border:none}
+.btn:hover{filter:brightness(1.12)}
+.btn:disabled{opacity:.45;cursor:not-allowed;filter:none}
+
+/* ============ cards & grids ============ */
+.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px}
+.card{
+  background:var(--panel);border:1px solid var(--line);border-radius:14px;
+  padding:18px 20px;
+}
+.card p{margin:0;color:var(--mut);font-size:14px}
+.card h3{display:flex;align-items:center;gap:8px}
+
+/* status pills — every card that describes something has one */
+.pill{
+  display:inline-block;font-size:10.5px;letter-spacing:.04em;
+  text-transform:uppercase;padding:2px 9px;border-radius:999px;margin-bottom:.6rem;
+}
+.p-live{background:rgba(79,209,165,.14);color:var(--srv)}
+.p-alpha{background:rgba(214,255,61,.13);color:var(--acid)}
+.p-designed{background:rgba(179,157,219,.14);color:var(--sia)}
+.p-upcoming{background:rgba(139,152,169,.14);color:var(--mut)}
+
+/* ============ steps (numbered explainer lists) ============ */
+ol.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:10px}
+ol.steps li{
+  counter-increment:s;display:grid;grid-template-columns:26px 1fr;gap:4px 14px;
+  align-items:start;
+  background:var(--panel2);border:1px solid var(--line);border-radius:12px;
+  padding:15px 18px;
+}
+ol.steps li::before{
+  content:counter(s);grid-column:1;grid-row:1;align-self:start;
+  display:grid;place-items:center;
+  width:26px;height:26px;border-radius:50%;
+  background:rgba(214,255,61,.14);color:var(--acid);
+  font-size:13px;font-weight:700;
+}
+ol.steps li > *{grid-column:2;min-width:0}
+ol.steps b{color:var(--ink);font-size:14.5px}
+ol.steps span{color:var(--mut);font-size:14px;line-height:1.62}
+
+/* ============ tables ============ */
+table{width:100%;border-collapse:collapse;font-size:14.5px}
+th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
+th{color:var(--dim);font-weight:600;font-size:12.5px;text-transform:uppercase;letter-spacing:.04em}
+
+/* code chips + preformatted */
+td code,code.inline,.mono{
+  font-family:ui-monospace,monospace;font-size:13px;
+  background:#0e131b;border:1px solid var(--line);border-radius:6px;padding:1px 6px;
+}
+pre{
+  background:#0e131b;border:1px solid var(--line);border-radius:10px;
+  padding:13px 16px;overflow-x:auto;
+  font-family:ui-monospace,monospace;font-size:13px;color:#c9d4e3;margin:.8rem 0;
+}
+
+/* ============ source badges (chain / sia / server) ============ */
+.src{font-size:12px;padding:1px 8px;border-radius:999px;white-space:nowrap}
+.s-chain{background:rgba(214,255,61,.13);color:var(--chain)}
+.s-sia{background:rgba(179,157,219,.16);color:var(--sia)}
+.s-srv{background:rgba(79,209,165,.14);color:var(--srv)}
+
+/* ============ notes (advisory boxes) ============ */
+.note{
+  background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--acid);
+  border-radius:10px;padding:14px 18px;color:var(--mut);font-size:14px;margin-top:1.4rem;
+}
+.note b{color:var(--ink)}
+.note.warn{border-left-color:var(--warn)}
+.note.danger{border-left-color:var(--taken)}
+
+/* ============ footer ============ */
+footer{
+  border-top:1px solid var(--line);padding:2.5rem 0 3.5rem;
+  color:var(--dim);font-size:13px;text-align:center;margin-top:2.5rem;
+}
+footer .fine{max-width:660px;margin:.8rem auto 0;line-height:1.7}
+
+/* ============ brand mark (inline SVG, replaces the emoji) ============ */
+.topnav .brand .logo{width:24px;height:16px;vertical-align:-2px;margin-right:8px}
+.topnav .brand .logo .l1{stroke:var(--mut)}
+.topnav .brand .logo .l2{stroke:var(--acid)}
+.mark svg{width:150px;height:60px;display:block;margin:0 auto}
+.mark .l1{stroke:var(--mut)}
+.mark .l2{stroke:var(--acid)}
+
+/* ============ screenshots / figures ============ */
+figure.shot{margin:1.6rem 0 0;}
+figure.shot img{display:block;width:100%;height:auto;border-radius:12px;border:1px solid var(--line);box-shadow:0 18px 48px rgba(0,0,0,.45)}
+figure.shot figcaption{color:var(--dim);font-size:12.5px;margin-top:.6rem;text-align:center}
+.card figure.shot{margin:.9rem 0 0}
+.card figure.shot img{border-radius:8px;box-shadow:none}