:root {
  --rail: 236px;
  --utility-height: 54px;
}

html,
body { overflow-x: hidden; }

.institutional-shell {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  min-height: 100vh;
}

.workspace-shell { min-width: 0; }

.institutional-shell .rail {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 94%, var(--bg));
}

.institutional-shell .brand {
  min-height: 64px;
  padding: 14px 14px 12px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.brand-wordmark { min-width: 0; }
.brand-wordmark b {
  display: block;
  font-size: 15px;
  line-height: 1.15;
  letter-spacing: -0.015em;
}
.brand-wordmark span {
  display: block;
  margin-top: 5px;
  color: var(--dim);
  font: 700 var(--type-compact) var(--mono);
  letter-spacing: 0.08em;
}

.institutional-shell .nav {
  margin: 0;
  padding: 14px 10px;
  display: grid;
  gap: 4px;
}
.institutional-shell .nav button {
  min-height: 40px;
  padding: 9px 11px;
  border: 0;
  border-left: 2px solid transparent;
  border-radius: var(--radius-inner);
  background: transparent;
  color: var(--muted);
  font-size: var(--type-heading);
  font-weight: 680;
  letter-spacing: 0;
  text-align: left;
  cursor: pointer;
}
.institutional-shell .nav button:hover {
  border-color: var(--line2);
  background: color-mix(in srgb, var(--panel2) 72%, transparent);
}
.institutional-shell .nav button.active {
  border-left-color: var(--text);
  background: var(--panel2);
  color: var(--text);
}
.institutional-shell .nav button[data-view="nasdaq"].active { border-left-color: var(--ndx); color: var(--ndx); }
.institutional-shell .nav button[data-view="gold"].active { border-left-color: var(--xau); color: var(--xau); }

.rail-context {
  margin-top: auto;
  padding: 13px 14px 16px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 7px 10px;
  border-top: 1px solid var(--line);
}
.rail-context span {
  color: var(--dim);
  font: 800 var(--type-compact) var(--mono);
  letter-spacing: 0.1em;
}
.rail-context b {
  color: var(--muted);
  font: 700 var(--type-compact) var(--mono);
  text-align: right;
}

.utility-bar {
  position: sticky;
  top: 0;
  z-index: 30;
  height: var(--utility-height);
  padding: 0 clamp(16px, 1.8vw, 28px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(12px);
}
.utility-identity {
  min-width: 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.utility-identity strong {
  font: 800 var(--type-label) var(--mono);
  letter-spacing: 0.11em;
}
.utility-identity span {
  color: var(--dim);
  font: 700 var(--type-compact) var(--mono);
  letter-spacing: 0.06em;
}
.utility-controls {
  display: flex;
  align-items: center;
  gap: 9px;
}
.utility-toggle {
  height: 34px;
  padding: 2px;
  display: flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--panel2);
}
.utility-toggle button {
  width: 32px;
  min-width: 32px;
  height: 28px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-inner);
  background: transparent;
  color: var(--muted);
  font: 700 var(--type-compact) var(--mono);
  line-height: 28px;
  cursor: pointer;
}
.utility-toggle button:hover { color: var(--text); }
.utility-toggle button.active {
  background: var(--panel);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--line2);
}

.institutional-shell .main {
  min-width: 0;
  padding: 0 clamp(20px, 2.1vw, 34px) 44px;
}

@media (max-width: 820px) {
  :root { --rail: 0px; --utility-height: 44px; }
  .institutional-shell { display: block; }
  .institutional-shell .rail {
    position: relative;
    height: auto;
    padding: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .institutional-shell .brand { min-height: 48px; padding: 10px 12px; }
  .brand-wordmark span { margin-top: 3px; }
  .institutional-shell .nav {
    display: flex;
    gap: 3px;
    padding: 6px 8px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
  }
  .institutional-shell .nav button {
    flex: 0 0 auto;
    min-height: 32px;
    padding: 7px 10px;
    border-left: 0;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
  }
  .institutional-shell .nav button.active { border-left-color: transparent; border-bottom-color: var(--text); }
  .institutional-shell .nav button[data-view="nasdaq"].active { border-left-color: transparent; border-bottom-color: var(--ndx); }
  .institutional-shell .nav button[data-view="gold"].active { border-left-color: transparent; border-bottom-color: var(--xau); }
  .rail-context { display: none; }
  .utility-bar { padding: 0 10px; }
  .utility-identity span { display: none; }
  .institutional-shell .main { padding: 0 11px 28px; }
}

@media (max-width: 560px) {
  .utility-identity strong { font-size: var(--type-compact); }
  .utility-controls { gap: 5px; }
  .utility-toggle button { width: 28px; min-width: 28px; }
}