diff --git a/extensions/index.html b/extensions/index.html
index 7525b75..d54a7d3 100644
--- a/extensions/index.html
+++ b/extensions/index.html
@@ -35,16 +35,43 @@
   .topnav a.get{margin-left:auto;background:rgba(214,255,61,.10);color:var(--acid);font-weight:500}
   .topnav a.get:hover{background:rgba(214,255,61,.18)}
 
-  /* Left floating in-page nav. Sits outside the 900px content box on wide viewports. */
-  .sidenav{position:fixed;top:96px;left:max(16px,calc((100vw - 1180px) / 2));width:172px;z-index:10;
-       padding:14px 4px 14px 14px;border-left:1px solid var(--line);font-size:13px}
-  .sidenav .lbl{color:var(--dim);font:600 10.5px/1 system-ui;letter-spacing:.22em;text-transform:uppercase;
-       margin:0 0 10px 2px}
-  .sidenav a{display:block;color:var(--mut);text-decoration:none;padding:7px 10px;border-radius:8px;
-       border-left:2px solid transparent;margin-left:-2px;transition:color .1s,background .1s,border-color .1s}
+  /* Adaptive edge nav: full-width panel at left edge on wide,
+     icon rail on medium, bottom bar with icons on mobile. */
+  :root{--sn-w:220px}
+  body{padding-left:var(--sn-w)}
+  .sidenav{position:fixed;top:0;left:0;bottom:0;width:var(--sn-w);z-index:15;
+       background:rgba(11,14,20,.82);backdrop-filter:blur(10px);
+       border-right:1px solid var(--line);padding:74px 14px 22px 18px;
+       overflow-y:auto;transition:width .15s ease}
+  .sidenav .lbl{color:var(--dim);font:600 10.5px/1 system-ui;letter-spacing:.24em;text-transform:uppercase;
+       margin:0 0 14px 4px}
+  .sidenav a{display:flex;align-items:center;gap:14px;color:var(--mut);text-decoration:none;
+       padding:11px 12px;border-radius:10px;border-left:3px solid transparent;margin-left:-3px;
+       font-size:14.5px;font-weight:500;transition:color .1s,background .1s,border-color .1s}
+  .sidenav a .ic{flex:none;width:22px;font-size:18px;line-height:1;text-align:center;
+       display:inline-flex;justify-content:center;align-items:center}
+  .sidenav a .lb{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
   .sidenav a:hover{color:var(--ink);background:var(--panel)}
-  .sidenav a.active{color:var(--acid);border-left-color:var(--acid);background:rgba(214,255,61,.06)}
-  @media (max-width:1180px){.sidenav{display:none}}
+  .sidenav a.active{color:var(--acid);border-left-color:var(--acid);background:rgba(214,255,61,.07)}
+  @media (max-width:1180px){
+    :root{--sn-w:64px}
+    .sidenav{padding:74px 6px 22px 6px}
+    .sidenav .lbl{display:none}
+    .sidenav a{justify-content:center;padding:12px 4px;gap:0}
+    .sidenav a .lb{display:none}
+  }
+  @media (max-width:720px){
+    :root{--sn-w:0px}
+    body{padding-left:0;padding-bottom:64px}
+    .sidenav{top:auto;bottom:0;left:0;right:0;width:100%;height:auto;
+         padding:4px 4px;flex-direction:row;border-right:none;border-top:1px solid var(--line);
+         display:flex;justify-content:space-around;overflow-x:auto}
+    .sidenav .lbl{display:none}
+    .sidenav a{flex:1;min-width:56px;padding:10px 6px;justify-content:center;border-left:none;
+         border-top:3px solid transparent;margin-left:0;margin-top:-3px;gap:0}
+    .sidenav a.active{border-left-color:transparent;border-top-color:var(--acid)}
+    .sidenav a .lb{display:none}
+  }
 
   header.hero{text-align:center;padding:3.5rem 1.2rem 1rem}
   h1{font-size:clamp(1.8rem,4.5vw,2.4rem);margin:.6rem 0 .3rem;letter-spacing:-.3px}
@@ -103,12 +130,12 @@
 
 <aside class="sidenav" aria-label="On this page">
   <div class="lbl">On this page</div>
-  <a href="#bundled">Bundled</a>
-  <a href="#community">Community</a>
-  <a href="#build">Build &amp; publish</a>
-  <a href="#updates">How updates work</a>
-  <a href="#operator-key">Operator key</a>
-  <a href="#roadmap">Roadmap</a>
+  <a href="#bundled"      title="Bundled"         ><span class="ic" aria-hidden="true">📦</span><span class="lb">Bundled</span></a>
+  <a href="#community"    title="Community"       ><span class="ic" aria-hidden="true">👥</span><span class="lb">Community</span></a>
+  <a href="#build"        title="Build &amp; publish" ><span class="ic" aria-hidden="true">🔨</span><span class="lb">Build &amp; publish</span></a>
+  <a href="#updates"      title="How updates work" ><span class="ic" aria-hidden="true">🔄</span><span class="lb">How updates work</span></a>
+  <a href="#operator-key" title="Operator key"    ><span class="ic" aria-hidden="true">🔑</span><span class="lb">Operator key</span></a>
+  <a href="#roadmap"      title="Roadmap"         ><span class="ic" aria-hidden="true">🗺</span><span class="lb">Roadmap</span></a>
 </aside>
 
 <header class="hero">
diff --git a/index.html b/index.html
index c0fa7f9..f66eb5e 100644
--- a/index.html
+++ b/index.html
@@ -40,16 +40,47 @@
   .topnav a.get{margin-left:auto;background:rgba(214,255,61,.10);color:var(--acid);font-weight:500}
   .topnav a.get:hover{background:rgba(214,255,61,.18)}
 
-  /* Left floating in-page nav (home only). Sits outside the 980px content box on wide viewports. */
-  .sidenav{position:fixed;top:96px;left:max(16px,calc((100vw - 1240px) / 2));width:172px;z-index:10;
-       padding:14px 4px 14px 14px;border-left:1px solid var(--line);font-size:13px}
-  .sidenav .lbl{color:var(--dim);font:600 10.5px/1 system-ui;letter-spacing:.22em;text-transform:uppercase;
-       margin:0 0 10px 2px}
-  .sidenav a{display:block;color:var(--mut);text-decoration:none;padding:7px 10px;border-radius:8px;
-       border-left:2px solid transparent;margin-left:-2px;transition:color .1s,background .1s,border-color .1s}
+  /* Adaptive edge nav: full-width panel at left edge on wide,
+     icon rail on medium, bottom bar with icons on mobile.
+     body padding-left carves the space so topnav + content flow as one column
+     beside the sidebar. */
+  :root{--sn-w:220px}
+  body{padding-left:var(--sn-w)}
+  .sidenav{position:fixed;top:0;left:0;bottom:0;width:var(--sn-w);z-index:15;
+       background:rgba(11,14,20,.82);backdrop-filter:blur(10px);
+       border-right:1px solid var(--line);padding:74px 14px 22px 18px;
+       overflow-y:auto;transition:width .15s ease}
+  .sidenav .lbl{color:var(--dim);font:600 10.5px/1 system-ui;letter-spacing:.24em;text-transform:uppercase;
+       margin:0 0 14px 4px}
+  .sidenav a{display:flex;align-items:center;gap:14px;color:var(--mut);text-decoration:none;
+       padding:11px 12px;border-radius:10px;border-left:3px solid transparent;margin-left:-3px;
+       font-size:14.5px;font-weight:500;transition:color .1s,background .1s,border-color .1s}
+  .sidenav a .ic{flex:none;width:22px;font-size:18px;line-height:1;text-align:center;
+       display:inline-flex;justify-content:center;align-items:center}
+  .sidenav a .lb{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
   .sidenav a:hover{color:var(--ink);background:var(--panel)}
-  .sidenav a.active{color:var(--acid);border-left-color:var(--acid);background:rgba(214,255,61,.06)}
-  @media (max-width:1200px){.sidenav{display:none}}
+  .sidenav a.active{color:var(--acid);border-left-color:var(--acid);background:rgba(214,255,61,.07)}
+  /* Medium: shrink to an icon rail */
+  @media (max-width:1180px){
+    :root{--sn-w:64px}
+    .sidenav{padding:74px 6px 22px 6px}
+    .sidenav .lbl{display:none}
+    .sidenav a{justify-content:center;padding:12px 4px;gap:0}
+    .sidenav a .lb{display:none}
+  }
+  /* Mobile: bottom icon bar */
+  @media (max-width:720px){
+    :root{--sn-w:0px}
+    body{padding-left:0;padding-bottom:64px}
+    .sidenav{top:auto;bottom:0;left:0;right:0;width:100%;height:auto;
+         padding:4px 4px;flex-direction:row;border-right:none;border-top:1px solid var(--line);
+         display:flex;justify-content:space-around;overflow-x:auto}
+    .sidenav .lbl{display:none}
+    .sidenav a{flex:1;min-width:56px;padding:10px 6px;justify-content:center;border-left:none;
+         border-top:3px solid transparent;margin-left:0;margin-top:-3px;gap:0}
+    .sidenav a.active{border-left-color:transparent;border-top-color:var(--acid)}
+    .sidenav a .lb{display:none}
+  }
 
   header.hero{text-align:center;padding:5rem 1.2rem 1.5rem}
   .mark{display:inline-block}
@@ -120,10 +151,10 @@
 
 <aside class="sidenav" aria-label="On this page">
   <div class="lbl">On this page</div>
-  <a href="#what">What it is</a>
-  <a href="#features">Features</a>
-  <a href="#download">Download</a>
-  <a href="#verify">Verify</a>
+  <a href="#what"     title="What it is"><span class="ic" aria-hidden="true">🌐</span><span class="lb">What it is</span></a>
+  <a href="#features" title="Features"  ><span class="ic" aria-hidden="true">⚡</span><span class="lb">Features</span></a>
+  <a href="#download" title="Download"  ><span class="ic" aria-hidden="true">⬇</span><span class="lb">Download</span></a>
+  <a href="#verify"   title="Verify"    ><span class="ic" aria-hidden="true">🔐</span><span class="lb">Verify</span></a>
 </aside>
 
 <header class="hero">
diff --git a/plug-ins/index.html b/plug-ins/index.html
index 4926fca..d553e58 100644
--- a/plug-ins/index.html
+++ b/plug-ins/index.html
@@ -33,16 +33,43 @@
   .topnav a.get{margin-left:auto;background:rgba(214,255,61,.10);color:var(--acid);font-weight:500}
   .topnav a.get:hover{background:rgba(214,255,61,.18)}
 
-  /* Left floating in-page nav. Sits outside the 900px content box on wide viewports. */
-  .sidenav{position:fixed;top:96px;left:max(16px,calc((100vw - 1180px) / 2));width:172px;z-index:10;
-       padding:14px 4px 14px 14px;border-left:1px solid var(--line);font-size:13px}
-  .sidenav .lbl{color:var(--dim);font:600 10.5px/1 system-ui;letter-spacing:.22em;text-transform:uppercase;
-       margin:0 0 10px 2px}
-  .sidenav a{display:block;color:var(--mut);text-decoration:none;padding:7px 10px;border-radius:8px;
-       border-left:2px solid transparent;margin-left:-2px;transition:color .1s,background .1s,border-color .1s}
+  /* Adaptive edge nav: full-width panel at left edge on wide,
+     icon rail on medium, bottom bar with icons on mobile. */
+  :root{--sn-w:220px}
+  body{padding-left:var(--sn-w)}
+  .sidenav{position:fixed;top:0;left:0;bottom:0;width:var(--sn-w);z-index:15;
+       background:rgba(11,14,20,.82);backdrop-filter:blur(10px);
+       border-right:1px solid var(--line);padding:74px 14px 22px 18px;
+       overflow-y:auto;transition:width .15s ease}
+  .sidenav .lbl{color:var(--dim);font:600 10.5px/1 system-ui;letter-spacing:.24em;text-transform:uppercase;
+       margin:0 0 14px 4px}
+  .sidenav a{display:flex;align-items:center;gap:14px;color:var(--mut);text-decoration:none;
+       padding:11px 12px;border-radius:10px;border-left:3px solid transparent;margin-left:-3px;
+       font-size:14.5px;font-weight:500;transition:color .1s,background .1s,border-color .1s}
+  .sidenav a .ic{flex:none;width:22px;font-size:18px;line-height:1;text-align:center;
+       display:inline-flex;justify-content:center;align-items:center}
+  .sidenav a .lb{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
   .sidenav a:hover{color:var(--ink);background:var(--panel)}
-  .sidenav a.active{color:var(--acid);border-left-color:var(--acid);background:rgba(214,255,61,.06)}
-  @media (max-width:1180px){.sidenav{display:none}}
+  .sidenav a.active{color:var(--acid);border-left-color:var(--acid);background:rgba(214,255,61,.07)}
+  @media (max-width:1180px){
+    :root{--sn-w:64px}
+    .sidenav{padding:74px 6px 22px 6px}
+    .sidenav .lbl{display:none}
+    .sidenav a{justify-content:center;padding:12px 4px;gap:0}
+    .sidenav a .lb{display:none}
+  }
+  @media (max-width:720px){
+    :root{--sn-w:0px}
+    body{padding-left:0;padding-bottom:64px}
+    .sidenav{top:auto;bottom:0;left:0;right:0;width:100%;height:auto;
+         padding:4px 4px;flex-direction:row;border-right:none;border-top:1px solid var(--line);
+         display:flex;justify-content:space-around;overflow-x:auto}
+    .sidenav .lbl{display:none}
+    .sidenav a{flex:1;min-width:56px;padding:10px 6px;justify-content:center;border-left:none;
+         border-top:3px solid transparent;margin-left:0;margin-top:-3px;gap:0}
+    .sidenav a.active{border-left-color:transparent;border-top-color:var(--acid)}
+    .sidenav a .lb{display:none}
+  }
 
   header.hero{text-align:center;padding:3.5rem 1.2rem 1rem}
   h1{font-size:clamp(1.8rem,4.5vw,2.4rem);margin:.6rem 0 .3rem;letter-spacing:-.3px}
@@ -95,9 +122,9 @@
 
 <aside class="sidenav" aria-label="On this page">
   <div class="lbl">On this page</div>
-  <a href="#aegis-section">Aegis wallet</a>
-  <a href="#ariadne-section">Ariadne's Thread</a>
-  <a href="#line">Plug-ins vs extensions</a>
+  <a href="#aegis-section"   title="Aegis wallet"          ><span class="ic" aria-hidden="true">🛡</span><span class="lb">Aegis wallet</span></a>
+  <a href="#ariadne-section" title="Ariadne's Thread"      ><span class="ic" aria-hidden="true">🧵</span><span class="lb">Ariadne's Thread</span></a>
+  <a href="#line"            title="Plug-ins vs extensions"><span class="ic" aria-hidden="true">🧩</span><span class="lb">Plug-ins vs extensions</span></a>
 </aside>
 
 <header class="hero">