html, body {
  overflow-x: hidden;
  max-width: 100vw;
}
.container { 
  max-width: 1240px; 
  width: 100%; 
  margin: 0 auto; 
  padding: 2rem 1.5rem; 
  box-sizing: border-box; 
}
@media (max-width: 600px) {
  .container { padding: 1.25rem 0.85rem 5.5rem 0.85rem; }
}

/* Elevated Archival Header (Swiss Ledger Aesthetic) */
.site-header { 
  display: flex; justify-content: space-between; align-items: center; 
  flex-wrap: wrap; gap: 1.25rem; padding-bottom: 1.35rem; 
  border-bottom: 1px solid var(--color-border); margin-bottom: 2rem;
  position: relative;
}
.header-left {
  display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap;
}
.brand { 
  display: flex; align-items: center; gap: 0.75rem; text-decoration: none;
}
.brand-emblem {
  width: 38px; height: 38px; border-radius: 9px;
  background: var(--color-surface); border: 1.5px solid var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-accent);
  box-shadow: 0 2px 8px var(--color-accent-soft);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.brand:hover .brand-emblem {
  transform: rotate(6deg) scale(1.06);
}
.brand-text-group {
  display: flex; flex-direction: column;
}
.brand-title {
  font-family: var(--font-serif);
  font-size: 1.55rem; font-weight: 700; color: var(--color-text-primary);
  line-height: 1.1; letter-spacing: -0.02em;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--color-text-muted); font-weight: 600;
}
.brand-gem {
  width: 12px; height: 12px; border-radius: 3px;
  background: var(--color-accent); transform: rotate(45deg);
  display: inline-block; border: 1px solid var(--color-text-primary);
}

/* Header Navigation Links */
.header-nav {
  display: flex; align-items: center; gap: 1.25rem;
}
@media (max-width: 1020px) {
  .header-nav { display: none; }
}
.nav-link {
  font-size: 0.86rem; font-weight: 600; color: var(--color-text-secondary);
  text-decoration: none; transition: color 0.2s; position: relative;
  padding: 0.25rem 0;
}
.nav-link:hover, .nav-link.active {
  color: var(--color-text-primary);
}
.nav-link.active::after {
  content: ""; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 2px; background: var(--color-accent); border-radius: 2px;
}

/* Cmd+K Quick Trigger Button */
.cmd-k-trigger {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.45rem 0.85rem; background: var(--color-surface);
  border: 1px solid var(--color-border); border-radius: 7px;
  color: var(--color-text-muted); font-size: 0.82rem; cursor: pointer;
  transition: all 0.2s; font-family: var(--font-sans);
}
.cmd-k-trigger:hover {
  background: #FFF; border-color: var(--color-accent); color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}
.cmd-k-trigger .kbd {
  background: var(--color-canvas); border: 1px solid var(--color-border);
  padding: 0.1rem 0.35rem; border-radius: 4px; font-size: 0.72rem;
  font-family: var(--font-mono); color: var(--color-text-secondary);
}
.header-actions { display: flex; align-items: center; gap: 0.65rem; flex-wrap: wrap; }

/* Hero Section */
.hero {
  margin-bottom: 1.5rem;
}
.trust-badges {
  display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 0.75rem;
}
.badge-pill {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.75rem; font-weight: 600; font-family: var(--font-mono);
  padding: 0.25rem 0.65rem; border-radius: 20px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}
.badge-pill.verified { color: var(--color-semantic-positive); border-color: rgba(28, 89, 70, 0.25); background: var(--color-semantic-positive-bg); }
.badge-pill.privacy { color: var(--color-text-primary); }

.hero-title {
  font-size: clamp(1.75rem, 4vw, 2.35rem); font-weight: 800; color: var(--color-text-primary);
  margin-bottom: 0.45rem; letter-spacing: -0.03em; line-height: 1.16;
}
.hero-subtitle {
  font-size: 1.02rem; color: var(--color-text-secondary);
  max-width: 780px; line-height: 1.5; font-weight: 400;
}

/* Quick Persona Archetypes */
.presets-row { 
  display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; 
  margin-bottom: 1.5rem; padding: 0.7rem 1rem;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 10px; box-shadow: var(--shadow-sm);
}
.preset-label { 
  font-size: 0.74rem; font-weight: 700; text-transform: uppercase; 
  letter-spacing: 0.05em; color: var(--color-text-muted); margin-right: 0.35rem; 
}
.preset-chip { 
  padding: 0.35rem 0.8rem; background: var(--color-canvas); 
  border: 1px solid var(--color-border); border-radius: 20px; 
  font-size: 0.8rem; font-weight: 600; color: var(--color-text-secondary); 
  cursor: pointer; transition: all 0.18s ease; font-family: var(--font-sans); 
}
.preset-chip:hover { 
  border-color: var(--color-accent); color: var(--color-text-primary); 
  background: #FFF; box-shadow: 0 2px 8px rgba(212, 175, 55, 0.2); 
  transform: translateY(-1px); 
}
.preset-chip.active {
  background: var(--color-text-primary);
  color: var(--color-canvas);
  border-color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}

/* Bento Grid with Sticky Desktop Input Panel */
.bento-grid { 
  display: grid; 
  grid-template-columns: repeat(12, 1fr); 
  gap: 1.5rem; 
  width: 100%;
  min-width: 0;
  align-items: start;
}
.card { 
  background-color: var(--color-surface); 
  border: 1px solid var(--color-border); 
  border-radius: 14px; 
  padding: 1.65rem; 
  box-shadow: var(--shadow-md); 
  box-sizing: border-box;
  min-width: 0;
  max-width: 100%;
}
.input-section { 
  grid-column: span 5; 
  display: flex; 
  flex-direction: column; 
  gap: 1.25rem; 
  min-width: 0;
  position: sticky;
  top: 1.25rem;
}
.output-section { 
  grid-column: span 7; 
  display: flex; 
  flex-direction: column; 
  gap: 1.25rem; 
  min-width: 0; 
}

.form-row-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
@media (max-width: 480px) {
  .form-row-2col { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) {
  .bento-grid { display: flex; flex-direction: column; gap: 1.5rem; width: 100%; }
  .input-section { position: static; width: 100%; max-width: 100%; }
  .output-section { width: 100%; max-width: 100%; }
}
@media (max-width: 600px) {
  .card { padding: 1.2rem 1rem; border-radius: 12px; }
}

/* Metrics Grid (Top 4 KPIs) */
.results-grid { 
  display: grid; 
  grid-template-columns: repeat(4, minmax(0, 1fr)); 
  gap: 0.75rem; 
  min-width: 0;
}
@media (max-width: 1100px) {
  .results-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 480px) {
  .results-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.6rem; }
}

.result-box { 
  background-color: var(--color-canvas); 
  border: 1px solid var(--color-border); 
  padding: 0.95rem 0.9rem; 
  border-radius: 10px; 
  display: flex; 
  flex-direction: column; 
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; 
  min-width: 0;
  position: relative;
  overflow: visible;
}
.result-box.primary-kpi {
  border-left: 3.5px solid var(--color-semantic-positive);
  background: linear-gradient(135deg, #FFFFFF 0%, var(--color-canvas) 100%);
}
.result-box:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--color-accent); }
.result-label { 
  color: var(--color-text-secondary); 
  font-size: 0.72rem; 
  text-transform: uppercase; 
  letter-spacing: 0.05em; 
  margin-bottom: 0.25rem; 
  font-weight: 700; 
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.result-value { 
  font-size: clamp(1.2rem, 1.55vw, 1.55rem); 
  font-weight: 700; 
  color: var(--color-text-primary); 
  white-space: nowrap;
  letter-spacing: -0.02em;
}
/* High-contrast Emerald Green instead of low-contrast Gold on Ivory */
.result-value.accent { color: var(--color-semantic-positive); }
.result-value.deduction { color: var(--color-semantic-deduction); }

/* Interactive 3D Telemetry Studio Stage */
.pie-3d-stage {
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1rem 1rem 1.1rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 1px 4px rgba(26,52,56,0.04);
}
.pie-3d-wrapper {
  position: relative;
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  user-select: none;
}
#pie-3d-canvas {
  width: 100%;
  max-width: 480px;
  height: auto;
  aspect-ratio: 760 / 440;
  cursor: grab;
  filter: drop-shadow(0 14px 26px rgba(26, 52, 56, 0.14));
  touch-action: none;
}
#pie-3d-canvas:active {
  cursor: grabbing;
}
.pie-3d-hint {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.15rem;
  letter-spacing: 0.02em;
  font-weight: 600;
}
.pie-3d-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--color-text-primary);
  color: #FFF;
  padding: 0.55rem 0.95rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  white-space: nowrap;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 40;
  transform: translate(-50%, -125%);
  border: 1px solid rgba(255,255,255,0.18);
}
.pie-3d-tooltip.active {
  opacity: 1;
}

/* Interactive Telemetry Legend */
.pie-3d-legend {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
  width: 100%;
  margin-top: 0.85rem;
}
@media (max-width: 768px) {
  .pie-3d-legend { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.65rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}
.legend-item:hover, .legend-item.active {
  background: #FFF;
  border-color: var(--color-accent);
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.18);
  transform: translateY(-1px);
}
.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-net { background: var(--color-semantic-positive); }
.dot-fed { background: var(--color-semantic-deduction); }
.dot-state { background: var(--color-semantic-state); }
.dot-fica { background: var(--color-semantic-fica); }

.legend-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.legend-name {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.legend-val {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Form Controls with Real Tactile Currency Symbol */
.input-with-icon { position: relative; display: flex; align-items: center; }
.input-with-icon .currency-symbol,
.input-with-icon .icon { 
  position: absolute; 
  left: 14px; 
  color: var(--color-semantic-positive); 
  font-family: var(--font-mono); 
  font-weight: 700; 
  font-size: 1.2rem;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}
.input-with-icon input { 
  padding-left: 34px !important; 
  font-family: var(--font-mono);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] {
  -moz-appearance: textfield;
}

input[type="text"], input[type="number"], select { 
  width: 100%; padding: 0.78rem 0.9rem; background: #FFFFFF; 
  box-shadow: var(--shadow-inset); border: 1px solid var(--color-border); 
  border-radius: 8px; font-family: var(--font-mono); font-size: 1rem; 
  color: var(--color-text-primary); outline: none; transition: all 0.2s; 
}
input:focus, select:focus { 
  border-color: var(--color-semantic-positive); 
  box-shadow: 0 0 0 3px rgba(28, 89, 70, 0.14); 
  background: #FFF;
}

/* Dynamic Filled Range Slider */
.slider-wrapper { margin-top: 0.5rem; }
.slider-scale { display: flex; justify-content: space-between; font-size: 0.7rem; color: var(--color-text-muted); font-family: var(--font-mono); margin-top: 0.25rem; }
input[type="range"] {
  --slider-pct: 18%;
  -webkit-appearance: none; appearance: none; width: 100%; height: 7px;
  background: linear-gradient(to right, var(--color-semantic-positive) 0%, var(--color-semantic-positive) var(--slider-pct), var(--color-border) var(--slider-pct), var(--color-border) 100%);
  border-radius: 4px; outline: none;
  margin: 8px 0 2px 0; cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 22px; height: 22px;
  border-radius: 50%; background: var(--color-accent); border: 2.5px solid #FFF;
  box-shadow: 0 2px 6px rgba(26, 52, 56, 0.35); cursor: grab;
  transition: transform 0.12s, background-color 0.15s;
}
input[type="range"]::-webkit-slider-thumb:hover { background: var(--color-accent-hover); transform: scale(1.14); }
input[type="range"]::-webkit-slider-thumb:active { cursor: grabbing; transform: scale(1.22); }
input[type="range"]::-moz-range-thumb {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--color-accent); border: 2.5px solid #FFF;
  box-shadow: 0 2px 6px rgba(26, 52, 56, 0.35); cursor: grab;
}

.hint { font-size: 0.74rem; color: var(--color-text-muted); margin-top: 0.3rem; line-height: 1.4; }

/* Deduction Quick-Pills & Tax Shield Badge */
.label-row-pills {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.35rem;
  flex-wrap: wrap;
}
.label-row-pills label { margin-bottom: 0; }
.quick-pills { display: flex; gap: 0.3rem; }
.quick-pill {
  padding: 0.12rem 0.45rem;
  font-size: 0.68rem;
  font-family: var(--font-mono);
  font-weight: 600;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}
.quick-pill:hover {
  background: var(--color-text-primary);
  color: #FFF;
  border-color: var(--color-text-primary);
}
.tax-shield-badge {
  display: none;
  margin-top: 0.25rem;
  padding: 0.45rem 0.75rem;
  background: var(--color-semantic-positive-bg);
  border: 1px solid rgba(28, 89, 70, 0.25);
  border-radius: 6px;
  font-size: 0.76rem;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-semantic-positive);
}
.tax-shield-badge.active { display: block; }

/* Relocation Arbitrage */
.compare-toggle-box {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.8rem 0.95rem; background: var(--color-canvas);
  border: 1px solid var(--color-border); border-radius: 8px;
}
.toggle-switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--color-border); transition: .25s; border-radius: 24px;
}
.toggle-slider:before {
  position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px;
  background-color: white; transition: .25s; border-radius: 50%; box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.toggle-switch input:checked + .toggle-slider { background-color: var(--color-semantic-positive); }
.toggle-switch input:checked + .toggle-slider:before { transform: translateX(20px); }

.arbitrage-banner {
  display: none; background: var(--color-semantic-positive-bg);
  border: 1px solid #B4DEC0; border-radius: 10px; padding: 1.1rem 1.25rem;
}
.arbitrage-banner.negative { background: var(--color-semantic-deduction-bg); border-color: #E6B5AF; }
.arbitrage-banner.active { display: block; }
.arbitrage-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 0.35rem; flex-wrap: wrap; gap: 0.5rem; }
.arbitrage-title { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-semantic-positive); }
.arbitrage-banner.negative .arbitrage-title { color: var(--color-semantic-deduction); }
.arbitrage-delta { font-size: 1.35rem; font-weight: 700; font-family: var(--font-mono); color: var(--color-semantic-positive); }
.arbitrage-banner.negative .arbitrage-delta { color: var(--color-semantic-deduction); }
.arbitrage-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.6rem; }
.arbitrage-col { background: rgba(255, 255, 255, 0.9); padding: 0.7rem 0.9rem; border-radius: 6px; border: 1px solid rgba(0,0,0,0.05); }
.arbitrage-col .col-state { font-weight: 700; color: var(--color-text-primary); margin-bottom: 2px; font-size: 0.85rem; }
.arbitrage-col .col-val { font-family: var(--font-mono); font-size: 0.98rem; font-weight: 600; color: var(--color-text-secondary); }

/* Accordion */
.accordion { border: 1px solid var(--color-border); border-radius: 8px; overflow: hidden; background: var(--color-canvas); }
.accordion-header { padding: 0.85rem 1rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 0.9rem; color: var(--color-text-primary); background: var(--color-canvas); transition: background 0.2s; }
.accordion-header:hover { background: var(--color-surface-hover); }
.accordion-content { display: none; padding: 1.1rem; flex-direction: column; gap: 0.95rem; border-top: 1px solid var(--color-border); background: var(--color-surface); }
.accordion.open .accordion-content { display: flex; }
.accordion-icon { transition: transform 0.2s; }
.accordion.open .accordion-icon { transform: rotate(180deg); }

/* Buttons & Actions */
.btn { 
  padding: 0.55rem 0.95rem; border: 1px solid var(--color-border); 
  background: var(--color-canvas); border-radius: 7px; 
  cursor: pointer; font-weight: 600; color: var(--color-text-primary); 
  display: inline-flex; align-items: center; gap: 0.45rem; 
  transition: all 0.2s; font-family: var(--font-sans); font-size: 0.83rem;
}
.btn:hover { background: #FFF; border-color: var(--color-accent); box-shadow: var(--shadow-sm); transform: translateY(-1px); }
.btn-primary {
  background: var(--color-text-primary);
  color: var(--color-canvas);
  border-color: var(--color-text-primary);
}
.btn-primary:hover {
  background: var(--color-semantic-positive);
  border-color: var(--color-semantic-positive);
  color: #FFF;
}

/* 5-Tier Frequency Switcher */
.freq-tabs { 
  display: flex; gap: 0.25rem; 
  background: var(--color-canvas); padding: 4px; border-radius: 8px; 
  border: 1px solid var(--color-border); overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
}
.freq-tabs::-webkit-scrollbar { display: none; }
.freq-tab { 
  flex: 1;
  padding: 0.48rem 0.75rem; background: transparent; border: none; 
  border-radius: 6px; font-size: 0.8rem; font-weight: 600; 
  cursor: pointer; color: var(--color-text-secondary); transition: all 0.2s; 
  white-space: nowrap; text-align: center;
}
.freq-tab.active { background: var(--color-text-primary); color: var(--color-canvas); box-shadow: var(--shadow-sm); }
.freq-tab:hover:not(.active) { background: rgba(0,0,0,0.04); }

/* Tax Ladder & Live Bracket Room Callout */
.ladder-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  margin-bottom: 0.4rem;
}
.ladder-title {
  font-size: 0.92rem;
  color: var(--color-text-primary);
  font-weight: 700;
}
.ladder-subtitle {
  font-size: 0.74rem;
  color: var(--color-text-muted);
}
.tax-ladder { 
  display: flex; 
  height: 26px; 
  background: var(--color-canvas); 
  border: 1px solid var(--color-border); 
  border-radius: 6px; 
  position: relative; 
  width: 100%;
  max-width: 100%;
}
.ladder-segment { position: relative; height: 100%; border-right: 1px solid var(--color-border); background: var(--color-track-inactive); opacity: 0.22; transition: opacity 0.25s, filter 0.2s; cursor: pointer; }
.ladder-segment.active { background: var(--color-text-secondary); opacity: 0.78; }
.ladder-segment.current { background: var(--color-accent); opacity: 1; }
.ladder-segment:hover { opacity: 1; filter: brightness(1.12); z-index: 5; }

.ladder-tooltip {
  display: none; position: absolute; bottom: 128%; left: 50%; transform: translateX(-50%);
  background: var(--color-text-primary); color: #FFF; padding: 0.5rem 0.8rem; border-radius: 6px;
  font-size: 0.74rem; font-family: var(--font-mono); white-space: nowrap; z-index: 25;
  box-shadow: var(--shadow-lg); pointer-events: none;
}
.ladder-tooltip::after {
  content: ""; position: absolute; top: 100%; left: 50%; margin-left: -5px;
  border-width: 5px; border-style: solid; border-color: var(--color-text-primary) transparent transparent transparent;
}
.ladder-segment:hover .ladder-tooltip { display: block; }
.ladder-needle { 
  position: absolute; top: -4px; bottom: -4px; width: 3px; 
  background: var(--color-text-primary); 
  box-shadow: 0 0 0 2px var(--color-accent); 
  border-radius: 2px;
  transition: left 0.35s cubic-bezier(0.34, 1.56, 0.64, 1); 
  z-index: 10; pointer-events: none; 
}
.ladder-labels { display: flex; justify-content: space-between; font-size: 0.7rem; font-family: var(--font-mono); color: var(--color-text-muted); margin-top: 5px; font-weight: 600; }
.ladder-callout {
  margin-top: 0.55rem;
  padding: 0.5rem 0.75rem;
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* Tooltips */
.tooltip-trigger { position: relative; cursor: help; border-bottom: 1px dotted var(--color-text-muted); display: inline-block; }
.tooltip { 
  visibility: hidden; width: 220px; background-color: var(--color-text-primary); color: #fff; 
  text-align: center; border-radius: 6px; padding: 0.55rem; position: absolute; z-index: 50; 
  bottom: 125%; left: 50%; margin-left: -110px; opacity: 0; transition: opacity 0.2s; 
  font-size: 0.74rem; font-family: var(--font-sans); font-weight: 400; text-transform: none; 
  letter-spacing: normal; line-height: 1.35; box-shadow: var(--shadow-lg); white-space: normal; pointer-events: none;
}
.tooltip::after { content: ""; position: absolute; top: 100%; left: 50%; margin-left: -5px; border-width: 5px; border-style: solid; border-color: var(--color-text-primary) transparent transparent transparent; }
.tooltip-trigger:hover .tooltip { visibility: visible; opacity: 1; }

/* Ledger Breakdown Table */
.breakdown-table { width: 100%; border-collapse: collapse; }
.breakdown-table th, .breakdown-table td { padding: 0.68rem 0.35rem; border-bottom: 1px solid var(--color-border); text-align: left; transition: background 0.15s; }
.breakdown-table tr:hover th, .breakdown-table tr:hover td { background: rgba(255,255,255,0.5); }
.breakdown-table th { color: var(--color-text-primary); font-size: 0.85rem; font-weight: 600; word-break: break-word; }
.breakdown-table .sub-row th { padding-left: 1.15rem; color: var(--color-text-muted); font-weight: 500; font-size: 0.79rem; }
.breakdown-table .sub-row td { font-size: 0.82rem; color: var(--color-text-muted); }
.breakdown-table td.amount { text-align: right; font-family: var(--font-mono); font-weight: 600; white-space: nowrap; }

.indicator { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 7px; }
.ind-fed { background: var(--color-semantic-deduction); }
.ind-state { background: var(--color-semantic-state); }
.ind-fica { background: var(--color-semantic-fica); }

.ss-cap-badge {
  display: none;
  margin-left: 0.4rem;
  padding: 0.1rem 0.38rem;
  font-size: 0.62rem;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  background: var(--color-semantic-positive-bg);
  color: var(--color-semantic-positive);
  border: 1px solid rgba(28, 89, 70, 0.25);
  border-radius: 4px;
}
.ss-cap-badge.active { display: inline-block; }

/* Explainer Guide Cards */
.section-heading-block { margin: 3.5rem 0 1.35rem 0; text-align: left; }
.section-tag { font-size: 0.74rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-muted); font-family: var(--font-mono); }
.section-title { font-size: 1.75rem; font-weight: 700; color: var(--color-text-primary); margin-top: 0.3rem; }
.section-subtitle { color: var(--color-text-secondary); font-size: 0.95rem; max-width: 700px; margin-top: 0.25rem; }

.cards-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.35rem; margin-bottom: 2.5rem; }
@media (max-width: 850px) { .cards-grid-3 { grid-template-columns: 1fr; } }

.feature-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 12px; padding: 1.45rem; box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--color-accent); }
.feature-card-icon {
  width: 40px; height: 40px; border-radius: 8px; background: var(--color-canvas);
  border: 1px solid var(--color-border); display: flex; align-items: center; justify-content: center;
  margin-bottom: 0.9rem; color: var(--color-semantic-positive);
}
.feature-card-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.45rem; color: var(--color-text-primary); }
.feature-card-desc { font-size: 0.87rem; color: var(--color-text-secondary); line-height: 1.55; }

/* Comparison Matrix Table */
.matrix-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 12px; overflow-x: auto; -webkit-overflow-scrolling: touch; box-shadow: var(--shadow-md);
  margin-bottom: 2.5rem;
}
.matrix-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.matrix-table th {
  background: var(--color-canvas); padding: 0.95rem 1.2rem;
  border-bottom: 1px solid var(--color-border); text-align: left;
  font-weight: 700; color: var(--color-text-primary);
}
.matrix-table tbody tr { cursor: pointer; transition: background 0.15s ease; }
.matrix-table td {
  padding: 0.85rem 1.2rem; border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}
.matrix-table tr:last-child td { border-bottom: none; }
.matrix-table tbody tr:hover td { background: rgba(255, 255, 255, 0.65); }
.matrix-table tr.active-state-row td { 
  background: rgba(212, 175, 55, 0.14) !important; 
  color: var(--color-text-primary); font-weight: 600; 
}
.matrix-table tr.active-state-row td:first-child { border-left: 3.5px solid var(--color-accent); }
.active-state-badge {
  display: inline-flex; align-items: center; margin-left: 0.5rem; padding: 0.12rem 0.42rem;
  font-size: 0.64rem; font-family: var(--font-mono); font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.05em; background: var(--color-accent); color: #1A3438; border-radius: 4px;
}

/* FAQ Accordion Section */
.faq-list { display: flex; flex-direction: column; gap: 0.7rem; margin-bottom: 3.5rem; }
.faq-item { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 10px; overflow: hidden; }
.faq-question {
  padding: 1.1rem 1.3rem; cursor: pointer; display: flex;
  justify-content: space-between; align-items: center;
  font-weight: 700; font-size: 0.96rem; color: var(--color-text-primary);
}
.faq-question:hover { background: var(--color-surface-hover); }
.faq-answer { display: none; padding: 0 1.3rem 1.2rem 1.3rem; font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.6; }
.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-icon { transform: rotate(180deg); }
.faq-icon { transition: transform 0.2s; flex-shrink: 0; margin-left: 0.75rem; }

/* Archival Footer */
footer {
  border-top: 1px solid var(--color-border);
  padding: 2.75rem 0 2rem 0; margin-top: 2.5rem;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2.25rem;
}
@media (max-width: 800px) { footer { grid-template-columns: 1fr; gap: 1.75rem; } }
.footer-col-title {
  font-size: 0.8rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--color-text-muted); margin-bottom: 0.85rem;
  font-family: var(--font-mono);
}
.footer-text { font-size: 0.86rem; color: var(--color-text-muted); line-height: 1.6; max-width: 420px; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 0.55rem; }
.footer-links a { color: var(--color-text-secondary); text-decoration: none; font-size: 0.86rem; transition: color 0.15s; }
.footer-links a:hover { color: var(--color-semantic-positive); }

/* Modal */
.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(26, 52, 56, 0.45); backdrop-filter: blur(4px); display: flex; align-items: flex-start; justify-content: center; padding-top: 15vh; opacity: 0; pointer-events: none; transition: opacity 0.2s; z-index: 100; }
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-content { background: var(--color-canvas); border: 1px solid var(--color-border); border-radius: 12px; width: 92%; max-width: 580px; padding: 1.6rem; box-shadow: var(--shadow-lg); transform: translateY(-20px); transition: transform 0.2s; }
.modal-overlay.active .modal-content { transform: translateY(0); }
.modal-input { width: 100%; font-size: 1.3rem; padding: 0.75rem 0.2rem; border: none; background: transparent; border-bottom: 2px solid var(--color-semantic-positive); color: var(--color-text-primary); outline: none; font-family: var(--font-mono); }

/* Toast */
.toast { position: fixed; bottom: 24px; right: 24px; background: var(--color-text-primary); color: white; padding: 0.85rem 1.35rem; border-radius: 8px; box-shadow: var(--shadow-lg); transform: translateY(100px); opacity: 0; transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); z-index: 1000; font-weight: 600; font-size: 0.88rem; }
.toast.show { transform: translateY(0); opacity: 1; }

/* Mobile Sticky Telemetry Bar */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--color-text-primary);
  color: #FFF;
  padding: 0.7rem 1.1rem;
  z-index: 90;
  box-shadow: 0 -4px 16px rgba(26, 52, 56, 0.2);
  justify-content: space-between;
  align-items: center;
  border-top: 2px solid var(--color-accent);
}
@media (max-width: 768px) {
  .mobile-sticky-bar { display: flex; }
  .toast { bottom: 70px; right: 16px; left: 16px; text-align: center; }
}

/* Disclaimers & Ad Slots */
.calc-disclaimer { font-size: 0.74rem; color: var(--color-text-muted); line-height: 1.45; margin-top: 0.65rem; }
.calc-disclaimer a { color: var(--color-text-secondary); }
.ad-slot { margin: 1.5rem auto; max-width: 970px; min-height: 90px; text-align: center; }
.ad-slot:empty { display: none; }

/* Print / PDF Dossier Stylesheet */
@media print {
  body { background: #FFFFFF !important; font-size: 12px; }
  .site-header, .presets-row, .input-section, .freq-tabs, .section-heading-block, .cards-grid-3, .matrix-card, .faq-list, footer, .mobile-sticky-bar, .action-buttons-row, .ad-slot {
    display: none !important;
  }
  .container { max-width: 100%; padding: 0; }
  .bento-grid { display: block; }
  .output-section { border: 1px solid #CCC; box-shadow: none; padding: 1.25rem; width: 100%; }
  .pie-3d-stage { page-break-inside: avoid; border: 1px solid #DDD; }
}