diff --git a/frontend/src/assets/puro.css b/frontend/src/assets/puro.css
index 96c11980..d343ca0d 100644
--- a/frontend/src/assets/puro.css
+++ b/frontend/src/assets/puro.css
@@ -5,7 +5,9 @@
    Usage: <link rel="stylesheet" href="puro.css">
    ========================================================================== */
 
-*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
+*, *::before, *::after { box-sizing: border-box; }
+.puro-page, .puro-page *, .puro-page *::before, .puro-page *::after { margin: 0; padding: 0; }
+
 
 :root {
   /* Surfaces */
@@ -55,8 +57,8 @@
   --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
   --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
 }
-
-html, body {
+/* Merged from original html/body rules — applied to .puro-page container root */
+.puro-page {
   background: var(--bg-0);
   color: var(--text-0);
   font-family: var(--font-sans);
@@ -64,25 +66,26 @@ html, body {
   -webkit-font-smoothing: antialiased;
   text-rendering: optimizeLegibility;
   line-height: 1.5;
+  overflow-x: hidden;
 }
 
-body { overflow-x: hidden; }
 
-a { color: inherit; text-decoration: none; }
-button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
+
+.puro-page a { color: inherit; text-decoration: none; }
+.puro-page button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
 
 /* scrollbar — subtle */
-::-webkit-scrollbar { width: 10px; height: 10px; }
-::-webkit-scrollbar-track { background: transparent; }
-::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 6px; }
-::-webkit-scrollbar-thumb:hover { background: var(--border-3); }
+.puro-page::-webkit-scrollbar { width: 10px; height: 10px; }
+.puro-page::-webkit-scrollbar-track { background: transparent; }
+.puro-page::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 6px; }
+.puro-page::-webkit-scrollbar-thumb:hover { background: var(--border-3); }
 
-.mono { font-family: var(--font-mono); }
+.puro-page .mono { font-family: var(--font-mono); }
 
 /* ==========================================================================
    BACKGROUND EFFECTS
    ========================================================================== */
-.bg-glow {
+.puro-page .bg-glow {
   position: fixed;
   inset: 0;
   pointer-events: none;
@@ -90,7 +93,7 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   overflow: hidden;
 }
 .bg-glow::before,
-.bg-glow::after {
+.puro-page .bg-glow::after {
   content: "";
   position: absolute;
   width: 900px;
@@ -99,20 +102,20 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   filter: blur(120px);
   opacity: 0.35;
 }
-.bg-glow::before {
+.puro-page .bg-glow::before {
   background: radial-gradient(circle, #22d3ee 0%, transparent 60%);
   top: -300px;
   left: -200px;
 }
-.bg-glow::after {
+.puro-page .bg-glow::after {
   background: radial-gradient(circle, #a855f7 0%, transparent 60%);
   top: 200px;
   right: -300px;
   opacity: 0.25;
 }
-.bg-glow.soft::before, .bg-glow.soft::after { opacity: 0.15; }
+.puro-page .bg-glow.soft::before, .puro-page .bg-glow.soft::after { opacity: 0.15; }
 
-.grain {
+.puro-page .grain {
   position: fixed;
   inset: 0;
   pointer-events: none;
@@ -122,20 +125,20 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/></svg>");
 }
 
-.container {
+.puro-page .container {
   max-width: 1100px;
   margin: 0 auto;
   padding: 0 32px;
   position: relative;
   z-index: 2;
 }
-.container-wide { max-width: 1280px; }
-.container-narrow { max-width: 860px; }
+.puro-page .container-wide { max-width: 1280px; }
+.puro-page .container-narrow { max-width: 860px; }
 
 /* ==========================================================================
    NAV
    ========================================================================== */
-.nav {
+.puro-page .nav {
   position: sticky;
   top: 0;
   z-index: 50;
@@ -143,13 +146,13 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   background: rgba(10, 14, 26, 0.72);
   border-bottom: 1px solid var(--border);
 }
-.nav-inner {
+.puro-page .nav-inner {
   display: flex;
   align-items: center;
   height: 64px;
   gap: 48px;
 }
-.brand {
+.puro-page .brand {
   display: flex;
   align-items: center;
   gap: 10px;
@@ -157,21 +160,21 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   font-size: 15px;
   letter-spacing: 0.02em;
 }
-.hex {
+.puro-page .hex {
   width: 22px;
   height: 22px;
   color: var(--cyan);
 }
-.nav-links {
+.puro-page .nav-links {
   display: flex;
   gap: 28px;
   font-size: 14px;
   color: var(--text-2);
 }
-.nav-links a { transition: color .15s; }
-.nav-links a:hover, .nav-links a.active { color: var(--text-0); }
-.nav-links .disabled { color: var(--text-3); cursor: not-allowed; display: inline-flex; align-items: center; gap: 6px; }
-.nav-links .disabled::after {
+.puro-page .nav-links a { transition: color .15s; }
+.puro-page .nav-links a:hover, .puro-page .nav-links a.active { color: var(--text-0); }
+.puro-page .nav-links .disabled { color: var(--text-3); cursor: not-allowed; display: inline-flex; align-items: center; gap: 6px; }
+.puro-page .nav-links .disabled::after {
   content: "即将推出";
   font-size: 10px;
   padding: 2px 6px;
@@ -179,7 +182,7 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   border-radius: 4px;
   color: var(--text-3);
 }
-.nav-cta {
+.puro-page .nav-cta {
   margin-left: auto;
   display: flex;
   gap: 10px;
@@ -189,7 +192,7 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
 /* ==========================================================================
    BUTTONS
    ========================================================================== */
-.btn {
+.puro-page .btn {
   display: inline-flex;
   align-items: center;
   justify-content: center;
@@ -202,40 +205,40 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   white-space: nowrap;
   border: 1px solid transparent;
 }
-.btn-primary {
+.puro-page .btn-primary {
   background: var(--cyan);
   color: #042f2e;
   font-weight: 600;
 }
-.btn-primary:hover { background: var(--cyan-2); }
-.btn-primary:active { transform: translateY(1px); }
-.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
+.puro-page .btn-primary:hover { background: var(--cyan-2); }
+.puro-page .btn-primary:active { transform: translateY(1px); }
+.puro-page .btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
 
-.btn-ghost {
+.puro-page .btn-ghost {
   border-color: var(--border-2);
   color: var(--text-1);
 }
-.btn-ghost:hover { border-color: var(--border-3); color: var(--text-0); background: rgba(255,255,255,0.02); }
+.puro-page .btn-ghost:hover { border-color: var(--border-3); color: var(--text-0); background: rgba(255,255,255,0.02); }
 
-.btn-subtle {
+.puro-page .btn-subtle {
   background: rgba(255,255,255,0.04);
   color: var(--text-1);
   border-color: transparent;
 }
-.btn-subtle:hover { background: rgba(255,255,255,0.08); color: var(--text-0); }
+.puro-page .btn-subtle:hover { background: rgba(255,255,255,0.08); color: var(--text-0); }
 
-.btn-danger {
+.puro-page .btn-danger {
   background: rgba(248, 113, 113, 0.1);
   color: var(--red);
   border-color: rgba(248, 113, 113, 0.25);
 }
-.btn-danger:hover { background: rgba(248, 113, 113, 0.15); border-color: rgba(248, 113, 113, 0.4); }
+.puro-page .btn-danger:hover { background: rgba(248, 113, 113, 0.15); border-color: rgba(248, 113, 113, 0.4); }
 
-.btn-lg { padding: 12px 20px; font-size: 14px; }
-.btn-sm { padding: 5px 10px; font-size: 12px; }
-.btn-icon { padding: 7px; aspect-ratio: 1; }
+.puro-page .btn-lg { padding: 12px 20px; font-size: 14px; }
+.puro-page .btn-sm { padding: 5px 10px; font-size: 12px; }
+.puro-page .btn-icon { padding: 7px; aspect-ratio: 1; }
 
-.btn .spinner {
+.puro-page .btn .spinner {
   width: 14px; height: 14px;
   border: 2px solid rgba(0,0,0,0.2);
   border-top-color: currentColor;
@@ -243,14 +246,14 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   animation: spin .7s linear infinite;
   display: none;
 }
-.btn.loading .spinner { display: inline-block; }
-.btn.loading .label { opacity: 0.5; }
+.puro-page .btn.loading .spinner { display: inline-block; }
+.puro-page .btn.loading .label { opacity: 0.5; }
 @keyframes spin { to { transform: rotate(360deg); } }
 
 /* ==========================================================================
    BADGES / PILLS / CHIPS
    ========================================================================== */
-.badge {
+.puro-page .badge {
   display: inline-flex;
   align-items: center;
   gap: 4px;
@@ -262,13 +265,13 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   background: rgba(34, 211, 238, 0.1);
   color: var(--cyan);
 }
-.badge.amber { background: rgba(251, 191, 36, 0.12); color: var(--amber); }
-.badge.purple { background: rgba(168, 85, 247, 0.12); color: var(--purple); }
-.badge.green  { background: rgba(52, 211, 153, 0.12); color: var(--green); }
-.badge.red    { background: rgba(248, 113, 113, 0.12); color: var(--red); }
-.badge.muted  { background: rgba(255, 255, 255, 0.04); color: var(--text-2); border: 1px solid var(--border); }
+.puro-page .badge.amber { background: rgba(251, 191, 36, 0.12); color: var(--amber); }
+.puro-page .badge.purple { background: rgba(168, 85, 247, 0.12); color: var(--purple); }
+.puro-page .badge.green { background: rgba(52, 211, 153, 0.12); color: var(--green); }
+.puro-page .badge.red { background: rgba(248, 113, 113, 0.12); color: var(--red); }
+.puro-page .badge.muted { background: rgba(255, 255, 255, 0.04); color: var(--text-2); border: 1px solid var(--border); }
 
-.pill {
+.puro-page .pill {
   display: inline-block;
   padding: 2px 8px;
   border-radius: var(--r-sm);
@@ -279,7 +282,7 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   color: var(--text-0);
 }
 
-.chip {
+.puro-page .chip {
   display: inline-flex;
   align-items: center;
   gap: 6px;
@@ -291,16 +294,16 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   color: var(--text-1);
   font-family: var(--font-mono);
 }
-.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
-.chip.claude .dot { background: var(--p-claude); }
-.chip.gpt .dot { background: var(--p-gpt); }
-.chip.gemini .dot { background: var(--p-gemini); }
-.chip.codex .dot { background: var(--p-codex); }
+.puro-page .chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
+.puro-page .chip.claude .dot { background: var(--p-claude); }
+.puro-page .chip.gpt .dot { background: var(--p-gpt); }
+.puro-page .chip.gemini .dot { background: var(--p-gemini); }
+.puro-page .chip.codex .dot { background: var(--p-codex); }
 
-.dot-sep { width: 4px; height: 4px; border-radius: 50%; background: var(--text-3); display: inline-block; }
+.puro-page .dot-sep { width: 4px; height: 4px; border-radius: 50%; background: var(--text-3); display: inline-block; }
 
 /* status chip (tiny dot absolute-positioned) */
-.status-chip {
+.puro-page .status-chip {
   width: 6px;
   height: 6px;
   border-radius: 50%;
@@ -308,61 +311,61 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.15);
   display: inline-block;
 }
-.status-chip.dim { background: var(--text-3); box-shadow: none; }
-.status-chip.amber { background: var(--amber); box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.15); }
-.status-chip.red { background: var(--red); box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15); }
+.puro-page .status-chip.dim { background: var(--text-3); box-shadow: none; }
+.puro-page .status-chip.amber { background: var(--amber); box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.15); }
+.puro-page .status-chip.red { background: var(--red); box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15); }
 
 /* ==========================================================================
    CARDS / SURFACES
    ========================================================================== */
-.card {
+.puro-page .card {
   background: rgba(15, 23, 42, 0.6);
   border: 1px solid var(--border);
   border-radius: var(--r-lg);
   padding: 24px;
 }
-.card-raised {
+.puro-page .card-raised {
   background: var(--bg-1);
   border: 1px solid var(--border);
   border-radius: var(--r-lg);
 }
-.card-interactive {
+.puro-page .card-interactive {
   transition: all .2s;
   cursor: pointer;
 }
-.card-interactive:hover {
+.puro-page .card-interactive:hover {
   border-color: var(--border-2);
   background: rgba(15, 23, 42, 0.85);
   transform: translateY(-2px);
 }
 
-.divider { height: 1px; background: var(--border); margin: 24px 0; border: 0; }
-.divider-dashed { border: 0; border-top: 1px dashed var(--border); margin: 20px 0; }
+.puro-page .divider { height: 1px; background: var(--border); margin: 24px 0; border: 0; }
+.puro-page .divider-dashed { border: 0; border-top: 1px dashed var(--border); margin: 20px 0; }
 
 /* ==========================================================================
    FORMS
    ========================================================================== */
-.field { margin-bottom: 18px; }
-.field-label {
+.puro-page .field { margin-bottom: 18px; }
+.puro-page .field-label {
   display: block;
   font-size: 12px;
   font-weight: 500;
   color: var(--text-1);
   margin-bottom: 8px;
 }
-.field-hint {
+.puro-page .field-hint {
   font-size: 12px;
   color: var(--text-3);
   margin-top: 6px;
 }
-.field-error {
+.puro-page .field-error {
   font-size: 12px;
   color: var(--red);
   margin-top: 6px;
 }
 
-.input-wrap { position: relative; }
-.input-wrap .icon {
+.puro-page .input-wrap { position: relative; }
+.puro-page .input-wrap .icon {
   position: absolute;
   left: 14px;
   top: 50%;
@@ -371,7 +374,7 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   pointer-events: none;
   display: inline-flex;
 }
-.input {
+.puro-page .input {
   width: 100%;
   height: 42px;
   padding: 0 14px;
@@ -384,22 +387,22 @@ button { font-family: inherit; cursor: pointer; border: none; background: none;
   outline: none;
   transition: all .15s;
 }
-.input.with-icon { padding-left: 40px; }
-.input::placeholder { color: var(--text-3); }
-.input:hover { border-color: var(--border-3); }
-.input:focus {
+.puro-page .input.with-icon { padding-left: 40px; }
+.puro-page .input::placeholder { color: var(--text-3); }
+.puro-page .input:hover { border-color: var(--border-3); }
+.puro-page .input:focus {
   border-color: var(--cyan);
   box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
   background: rgba(15, 23, 42, 0.9);
 }
-.input.ok { border-color: rgba(52, 211, 153, 0.4); }
-.input.ok:focus { box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.12); }
-.input.error { border-color: var(--red); }
-.input.error:focus { box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12); }
+.puro-page .input.ok { border-color: rgba(52, 211, 153, 0.4); }
+.puro-page .input.ok:focus { box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.12); }
+.puro-page .input.error { border-color: var(--red); }
+.puro-page .input.error:focus { box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12); }
 
-textarea.input { height: auto; padding: 12px 14px; resize: vertical; line-height: 1.5; }
+.puro-page textarea.input { height: auto; padding: 12px 14px; resize: vertical; line-height: 1.5; }
 
-select.input {
+.puro-page select.input {
   appearance: none;
   background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>");
   background-repeat: no-repeat;
@@ -408,7 +411,7 @@ select.input {
 }
 
 /* checkbox */
-.check {
+.puro-page .check {
   display: inline-flex;
   align-items: center;
   gap: 10px;
@@ -417,8 +420,8 @@ select.input {
   font-size: 13px;
   color: var(--text-1);
 }
-.check input { display: none; }
-.check .box {
+.puro-page .check input { display: none; }
+.puro-page .check .box {
   width: 16px; height: 16px;
   border: 1px solid var(--border-2);
   border-radius: 4px;
@@ -429,11 +432,11 @@ select.input {
   transition: all .15s;
   flex-shrink: 0;
 }
-.check input:checked + .box {
+.puro-page .check input:checked + .box {
   background: var(--cyan);
   border-color: var(--cyan);
 }
-.check input:checked + .box::after {
+.puro-page .check input:checked + .box::after {
   content: "✓";
   color: #042f2e;
   font-size: 11px;
@@ -443,7 +446,7 @@ select.input {
 /* ==========================================================================
    SECTION HEADINGS
    ========================================================================== */
-.section-kicker {
+.puro-page .section-kicker {
   font-family: var(--font-mono);
   font-size: 12px;
   color: var(--cyan);
@@ -451,14 +454,14 @@ select.input {
   text-transform: uppercase;
   margin-bottom: 12px;
 }
-.section-title {
+.puro-page .section-title {
   font-size: clamp(28px, 3.5vw, 40px);
   font-weight: 700;
   letter-spacing: -0.02em;
   line-height: 1.15;
   margin-bottom: 16px;
 }
-.section-sub {
+.puro-page .section-sub {
   color: var(--text-2);
   font-size: 16px;
   line-height: 1.6;
@@ -467,12 +470,12 @@ select.input {
 /* ==========================================================================
    TABLES
    ========================================================================== */
-.tbl {
+.puro-page .tbl {
   width: 100%;
   font-size: 13px;
   border-collapse: collapse;
 }
-.tbl th {
+.puro-page .tbl th {
   text-align: left;
   color: var(--text-3);
   font-weight: 500;
@@ -482,26 +485,26 @@ select.input {
   font-size: 10px;
   letter-spacing: 0.1em;
 }
-.tbl td {
+.puro-page .tbl td {
   padding: 14px;
   border-bottom: 1px solid rgba(30, 41, 59, 0.5);
   color: var(--text-1);
 }
-.tbl tr:last-child td { border-bottom: none; }
-.tbl tr:hover td { background: rgba(15, 23, 42, 0.4); }
-.tbl td.mono, .tbl th.mono { font-family: var(--font-mono); }
+.puro-page .tbl tr:last-child td { border-bottom: none; }
+.puro-page .tbl tr:hover td { background: rgba(15, 23, 42, 0.4); }
+.puro-page .tbl td.mono, .puro-page .tbl th.mono { font-family: var(--font-mono); }
 
 /* ==========================================================================
    CODE BLOCKS
    ========================================================================== */
-.code-frame {
+.puro-page .code-frame {
   background: var(--bg-code);
   border: 1px solid var(--border);
   border-radius: var(--r-lg);
   overflow: hidden;
   box-shadow: var(--shadow-lg);
 }
-.code-head {
+.puro-page .code-head {
   display: flex;
   align-items: center;
   height: 40px;
@@ -510,17 +513,17 @@ select.input {
   background: rgba(15, 23, 42, 0.8);
   gap: 10px;
 }
-.traffic {
+.puro-page .traffic {
   display: flex;
   gap: 6px;
 }
-.traffic span {
+.puro-page .traffic span {
   width: 10px;
   height: 10px;
   border-radius: 50%;
   background: #475569;
 }
-.code-body {
+.puro-page .code-body {
   padding: 22px 26px;
   font-family: var(--font-mono);
   font-size: 13px;
@@ -528,93 +531,93 @@ select.input {
   color: var(--text-1);
   overflow-x: auto;
 }
-.code-body .line { display: flex; gap: 20px; }
-.ln { color: var(--text-3); user-select: none; min-width: 16px; text-align: right; opacity: 0.5; }
+.puro-page .code-body .line { display: flex; gap: 20px; }
+.puro-page .ln { color: var(--text-3); user-select: none; min-width: 16px; text-align: right; opacity: 0.5; }
 
 /* syntax */
-.kw  { color: #c084fc; }
-.str { color: #86efac; }
-.num { color: #fbbf24; }
-.com { color: #64748b; font-style: italic; }
-.fn  { color: #22d3ee; }
-.prop{ color: #f0abfc; }
-.var-v { color: #f8fafc; }
-.flag{ color: #fb923c; }
-.bash-prompt { color: var(--cyan); user-select: none; }
+.puro-page .kw { color: #c084fc; }
+.puro-page .str { color: #86efac; }
+.puro-page .num { color: #fbbf24; }
+.puro-page .com { color: #64748b; font-style: italic; }
+.puro-page .fn { color: #22d3ee; }
+.puro-page .prop { color: #f0abfc; }
+.puro-page .var-v { color: #f8fafc; }
+.puro-page .flag { color: #fb923c; }
+.puro-page .bash-prompt { color: var(--cyan); user-select: none; }
 
 /* ==========================================================================
    PROVIDER-BRAND HELPERS
    ========================================================================== */
-.provider {
+.puro-page .provider {
   display: inline-flex;
   align-items: center;
   gap: 6px;
   font-family: var(--font-mono);
   font-size: 12px;
 }
-.provider .dot { width: 6px; height: 6px; border-radius: 50%; }
-.provider.claude .dot { background: var(--p-claude); }
-.provider.gpt    .dot { background: var(--p-gpt); }
-.provider.gemini .dot { background: var(--p-gemini); }
-.provider.codex  .dot { background: var(--p-codex); }
+.puro-page .provider .dot { width: 6px; height: 6px; border-radius: 50%; }
+.puro-page .provider.claude .dot { background: var(--p-claude); }
+.puro-page .provider.gpt    .dot { background: var(--p-gpt); }
+.puro-page .provider.gemini .dot { background: var(--p-gemini); }
+.puro-page .provider.codex  .dot { background: var(--p-codex); }
 
 /* ==========================================================================
    UTILITIES
    ========================================================================== */
-.stack-xs { display: flex; flex-direction: column; gap: 8px; }
-.stack-sm { display: flex; flex-direction: column; gap: 12px; }
-.stack-md { display: flex; flex-direction: column; gap: 20px; }
-.stack-lg { display: flex; flex-direction: column; gap: 32px; }
+.puro-page .stack-xs { display: flex; flex-direction: column; gap: 8px; }
+.puro-page .stack-sm { display: flex; flex-direction: column; gap: 12px; }
+.puro-page .stack-md { display: flex; flex-direction: column; gap: 20px; }
+.puro-page .stack-lg { display: flex; flex-direction: column; gap: 32px; }
 
-.row { display: flex; align-items: center; gap: 12px; }
-.row-sm { gap: 8px; }
-.row-lg { gap: 20px; }
-.row-between { justify-content: space-between; }
-.row-center { justify-content: center; }
-.row-wrap { flex-wrap: wrap; }
+.puro-page .row { display: flex; align-items: center; gap: 12px; }
+.puro-page .row-sm { gap: 8px; }
+.puro-page .row-lg { gap: 20px; }
+.puro-page .row-between { justify-content: space-between; }
+.puro-page .row-center { justify-content: center; }
+.puro-page .row-wrap { flex-wrap: wrap; }
 
-.flex-1 { flex: 1; }
-.ml-auto { margin-left: auto; }
-.mt-auto { margin-top: auto; }
+.puro-page .flex-1 { flex: 1; }
+.puro-page .ml-auto { margin-left: auto; }
+.puro-page .mt-auto { margin-top: auto; }
 
-.text-0 { color: var(--text-0); }
-.text-1 { color: var(--text-1); }
-.text-2 { color: var(--text-2); }
-.text-3 { color: var(--text-3); }
-.text-cyan { color: var(--cyan); }
-.text-purple { color: var(--purple); }
-.text-amber { color: var(--amber); }
-.text-green { color: var(--green); }
-.text-red { color: var(--red); }
+.puro-page .text-0 { color: var(--text-0); }
+.puro-page .text-1 { color: var(--text-1); }
+.puro-page .text-2 { color: var(--text-2); }
+.puro-page .text-3 { color: var(--text-3); }
+.puro-page .text-cyan { color: var(--cyan); }
+.puro-page .text-purple { color: var(--purple); }
+.puro-page .text-amber { color: var(--amber); }
+.puro-page .text-green { color: var(--green); }
+.puro-page .text-red { color: var(--red); }
 
-.text-xs { font-size: 11px; }
-.text-sm { font-size: 13px; }
-.text-md { font-size: 14px; }
-.text-lg { font-size: 16px; }
-.text-xl { font-size: 20px; }
-.text-2xl { font-size: 28px; }
-.text-3xl { font-size: 36px; }
+.puro-page .text-xs { font-size: 11px; }
+.puro-page .text-sm { font-size: 13px; }
+.puro-page .text-md { font-size: 14px; }
+.puro-page .text-lg { font-size: 16px; }
+.puro-page .text-xl { font-size: 20px; }
+.puro-page .text-2xl { font-size: 28px; }
+.puro-page .text-3xl { font-size: 36px; }
 
-.fw-400 { font-weight: 400; }
-.fw-500 { font-weight: 500; }
-.fw-600 { font-weight: 600; }
-.fw-700 { font-weight: 700; }
-.fw-800 { font-weight: 800; }
+.puro-page .fw-400 { font-weight: 400; }
+.puro-page .fw-500 { font-weight: 500; }
+.puro-page .fw-600 { font-weight: 600; }
+.puro-page .fw-700 { font-weight: 700; }
+.puro-page .fw-800 { font-weight: 800; }
 
-.tabular { font-variant-numeric: tabular-nums; }
-.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.puro-page .tabular { font-variant-numeric: tabular-nums; }
+.puro-page .truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 
 /* ==========================================================================
    APP SHELL (for dashboard-style pages)
    ========================================================================== */
-.app-shell {
+.puro-page .app-shell {
   display: grid;
   grid-template-columns: 240px 1fr;
   min-height: 100vh;
   position: relative;
   z-index: 2;
 }
-.app-side {
+.puro-page .app-side {
   border-right: 1px solid var(--border);
   background: rgba(2, 6, 23, 0.6);
   padding: 20px 14px;
@@ -626,9 +629,9 @@ select.input {
   height: 100vh;
   overflow-y: auto;
 }
-.app-side .brand { padding: 6px 10px 14px; }
-.side-group { display: flex; flex-direction: column; gap: 2px; }
-.side-label {
+.puro-page .app-side .brand { padding: 6px 10px 14px; }
+.puro-page .side-group { display: flex; flex-direction: column; gap: 2px; }
+.puro-page .side-label {
   font-size: 10px;
   color: var(--text-3);
   text-transform: uppercase;
@@ -636,7 +639,7 @@ select.input {
   padding: 0 10px 8px;
   font-family: var(--font-mono);
 }
-.side-item {
+.puro-page .side-item {
   display: flex;
   align-items: center;
   gap: 10px;
@@ -647,27 +650,27 @@ select.input {
   cursor: pointer;
   transition: all .12s;
 }
-.side-item:hover { color: var(--text-0); background: rgba(255,255,255,0.03); }
-.side-item.active { background: rgba(34, 211, 238, 0.08); color: var(--cyan); }
-.side-item .ico {
+.puro-page .side-item:hover { color: var(--text-0); background: rgba(255,255,255,0.03); }
+.puro-page .side-item.active { background: rgba(34, 211, 238, 0.08); color: var(--cyan); }
+.puro-page .side-item .ico {
   width: 16px; height: 16px; opacity: 0.8;
   display: inline-flex; align-items: center; justify-content: center;
   flex-shrink: 0;
 }
-.side-item .count {
+.puro-page .side-item .count {
   margin-left: auto;
   font-size: 11px;
   color: var(--text-3);
   font-family: var(--font-mono);
 }
-.side-item.active .count { color: var(--cyan); }
+.puro-page .side-item.active .count { color: var(--cyan); }
 
-.app-main {
+.puro-page .app-main {
   min-width: 0; /* allow grid children to shrink */
   display: flex;
   flex-direction: column;
 }
-.app-topbar {
+.puro-page .app-topbar {
   height: 60px;
   border-bottom: 1px solid var(--border);
   display: flex;
@@ -680,18 +683,18 @@ select.input {
   background: rgba(10, 14, 26, 0.75);
   backdrop-filter: blur(12px);
 }
-.app-topbar h1 {
+.puro-page .app-topbar h1 {
   font-size: 18px;
   font-weight: 600;
   letter-spacing: -0.01em;
 }
-.app-content {
+.puro-page .app-content {
   padding: 32px;
   flex: 1;
 }
 
 /* user avatar pill */
-.avatar {
+.puro-page .avatar {
   width: 28px; height: 28px;
   border-radius: 50%;
   background: linear-gradient(135deg, #22d3ee, #a855f7);
@@ -707,7 +710,7 @@ select.input {
 /* ==========================================================================
    KBD
    ========================================================================== */
-kbd {
+.puro-page kbd {
   display: inline-flex;
   align-items: center;
   justify-content: center;