/* ==========================================================================
   Willamette Preventive & Concierge Cardiology — Portland, Oregon
   Pacific Northwest Clinical Editorial Design System
   Forest Slate (#132620) · Warm Alabaster (#f6f5f0) · Arterial Terracotta (#b5483a)
   ========================================================================== */

@property --fade-start {
  syntax: "<length>";
  inherits: false;
  initial-value: 0px;
}

@property --fade-end {
  syntax: "<length>";
  inherits: false;
  initial-value: 0px;
}

:root {
  /* Raw light / dark palette tokens (verified >= 4.8:1 WCAG AA contrast) */
  --bg-canvas-light: #f6f5f0;
  --bg-canvas-dark: #0e1c17;

  --bg-surface-light: #fcfbf8;
  --bg-surface-dark: #132620;

  --bg-subtle-light: #ebe8df;
  --bg-subtle-dark: #1b332b;

  --bg-ribbon-light: #132620;
  --bg-ribbon-dark: #193129;

  --text-ribbon-light: #f6f5f0;
  --text-ribbon-dark: #f6f5f0;

  --text-primary-light: #132620;
  --text-primary-dark: #f6f5f0;

  --text-secondary-light: #354c44;
  --text-secondary-dark: #c5d1cb;

  --accent-light: #b5483a;
  --accent-dark: #f08c7d;

  --accent-strong-light: #9e392c;
  --accent-strong-dark: #f59f92;

  --on-accent-light: #ffffff;
  --on-accent-dark: #132620;

  --positive-light: #1c5e43;
  --positive-dark: #7ad4ad;

  --border-light: #d5d0c3;
  --border-dark: #2a473d;

  --border-strong-light: #989282;
  --border-strong-dark: #4b6e62;

  --shadow-light: rgb(19 38 32 / 0.07);
  --shadow-dark: rgb(0 0 0 / 0.34);

  /* Fallback defaults for browsers without light-dark() */
  --bg-canvas: var(--bg-canvas-light);
  --bg-surface: var(--bg-surface-light);
  --bg-subtle: var(--bg-subtle-light);
  --bg-ribbon: var(--bg-ribbon-light);
  --text-ribbon: var(--text-ribbon-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --accent: var(--accent-light);
  --accent-strong: var(--accent-strong-light);
  --on-accent: var(--on-accent-light);
  --positive: var(--positive-light);
  --border-subtle: var(--border-light);
  --border-strong: var(--border-strong-light);
  --surface-shadow: var(--shadow-light);

  @media (prefers-color-scheme: dark) {
    --bg-canvas: var(--bg-canvas-dark);
    --bg-surface: var(--bg-surface-dark);
    --bg-subtle: var(--bg-subtle-dark);
    --bg-ribbon: var(--bg-ribbon-dark);
    --text-ribbon: var(--text-ribbon-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --accent: var(--accent-dark);
    --accent-strong: var(--accent-strong-dark);
    --on-accent: var(--on-accent-dark);
    --positive: var(--positive-dark);
    --border-subtle: var(--border-dark);
    --border-strong: var(--border-strong-dark);
    --surface-shadow: var(--shadow-dark);
  }

  /* Reflect <meta name="color-scheme"> manual overrides cleanly */
  color-scheme: light dark;

  &:has(> head > meta[name="color-scheme"][content="dark"]) {
    color-scheme: dark;
    --bg-canvas: var(--bg-canvas-dark);
    --bg-surface: var(--bg-surface-dark);
    --bg-subtle: var(--bg-subtle-dark);
    --bg-ribbon: var(--bg-ribbon-dark);
    --text-ribbon: var(--text-ribbon-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --accent: var(--accent-dark);
    --accent-strong: var(--accent-strong-dark);
    --on-accent: var(--on-accent-dark);
    --positive: var(--positive-dark);
    --border-subtle: var(--border-dark);
    --border-strong: var(--border-strong-dark);
    --surface-shadow: var(--shadow-dark);
  }

  &:has(> head > meta[name="color-scheme"][content="light"]) {
    color-scheme: light;
    --bg-canvas: var(--bg-canvas-light);
    --bg-surface: var(--bg-surface-light);
    --bg-subtle: var(--bg-subtle-light);
    --bg-ribbon: var(--bg-ribbon-light);
    --text-ribbon: var(--text-ribbon-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --accent: var(--accent-light);
    --accent-strong: var(--accent-strong-light);
    --on-accent: var(--on-accent-light);
    --positive: var(--positive-light);
    --border-subtle: var(--border-light);
    --border-strong: var(--border-strong-light);
    --surface-shadow: var(--shadow-light);
  }

  @supports (color: light-dark(white, black)) {
    --bg-canvas: light-dark(var(--bg-canvas-light), var(--bg-canvas-dark));
    --bg-surface: light-dark(var(--bg-surface-light), var(--bg-surface-dark));
    --bg-subtle: light-dark(var(--bg-subtle-light), var(--bg-subtle-dark));
    --bg-ribbon: light-dark(var(--bg-ribbon-light), var(--bg-ribbon-dark));
    --text-ribbon: light-dark(var(--text-ribbon-light), var(--text-ribbon-dark));
    --text-primary: light-dark(var(--text-primary-light), var(--text-primary-dark));
    --text-secondary: light-dark(var(--text-secondary-light), var(--text-secondary-dark));
    --accent: light-dark(var(--accent-light), var(--accent-dark));
    --accent-strong: light-dark(var(--accent-strong-light), var(--accent-strong-dark));
    --on-accent: light-dark(var(--on-accent-light), var(--on-accent-dark));
    --positive: light-dark(var(--positive-light), var(--positive-dark));
    --border-subtle: light-dark(var(--border-light), var(--border-dark));
    --border-strong: light-dark(var(--border-strong-light), var(--border-strong-dark));
    --surface-shadow: light-dark(var(--shadow-light), var(--shadow-dark));
  }

  accent-color: var(--accent);

  /* Typography */
  --font-serif: "Iowan Old Style", "Palatino Linotype", "URW Palladio L", P052, Georgia, serif;
  --font-sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;

  /* Spacing & Layout */
  --max-width: 76rem;
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Tabular numerals across all quantitative figures */
.tabular,
table td,
table th,
output,
input[type="number"],
.stat-value,
.kpi-value {
  font-variant-numeric: tabular-nums lining-nums;
}

/* Accessible Visually Hidden & Skip Link */
.visually-hidden:where(:not(:focus-within, :active)) {
  position: absolute !important;
  clip-path: inset(50%) !important;
  overflow: hidden !important;
  width: 1px !important;
  height: 1px !important;
  margin: -1px !important;
  padding: 0 !important;
  border: 0 !important;
  white-space: nowrap !important;
}

.skip-link:focus {
  position: fixed;
  inset-block-start: 0.75rem;
  inset-inline-start: 0.75rem;
  z-index: 1000;
  padding: 0.625rem 1rem;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
}

/* Keyboard Focus Indicators */
:where(a:any-link, button, input, select, summary, [tabindex="0"]):focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
}

/* Oregon ORS § 58.375 Regulatory Notice Ribbon */
.regulatory-ribbon {
  background-color: var(--bg-ribbon);
  color: var(--text-ribbon);
  border-block-end: 1px solid rgb(246 245 240 / 0.16);
  font-size: 0.8125rem;
  line-height: 1.45;
  padding-block: 0.5rem;
  padding-inline: 1rem;
}

.regulatory-ribbon__inner {
  max-inline-size: var(--max-width);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}

.regulatory-ribbon__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.regulatory-ribbon__dot {
  inline-size: 0.5rem;
  block-size: 0.5rem;
  border-radius: 50%;
  background-color: #f08c7d;
  flex: none;
}

.regulatory-ribbon__statute {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  border: 1px solid rgb(246 245 240 / 0.3);
  color: var(--text-ribbon);
}

/* Sticky Editorial Header & Dual-Lens Switcher */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 40;
  background-color: var(--bg-surface);
  border-block-end: 1px solid var(--border-subtle);
  box-shadow: 0 2px 12px var(--surface-shadow);
}

.site-header__inner {
  max-inline-size: var(--max-width);
  margin-inline: auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-inline-size: 0;
}

.brand-mark {
  inline-size: 2.25rem;
  block-size: 2.25rem;
  flex: none;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  display: block;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  display: block;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  max-inline-size: 100%;
}

/* Dual-Lens Tablist (follows modern-web-guidance `tabs`: aria-selected + ::after border) */
.lens-tablist {
  display: flex;
  overflow-x: auto;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.2rem;
  gap: 0.25rem;
  scrollbar-width: none;
}

.lens-tablist::-webkit-scrollbar {
  display: none;
}

.lens-tab {
  position: relative;
  flex: none;
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.3;
  padding: 0.5rem 0.9rem;
  min-block-size: 2.375rem;
  border-radius: calc(var(--radius-md) - 0.15rem);
  cursor: pointer;
  white-space: nowrap;
}

.lens-tab:hover {
  color: var(--text-primary);
}

.lens-tab[aria-selected="true"] {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: 0 1px 3px var(--surface-shadow);
}

.lens-tab[aria-selected="true"]::after {
  content: "";
  position: absolute;
  inset: auto 0.65rem 0.15rem;
  border-block-end: 2.5px solid var(--accent);
}

/* Theme Toggle Button (two-state system-aware toggle) */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  min-inline-size: 2.5rem;
  min-block-size: 2.5rem;
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
}

.theme-toggle:hover {
  background-color: var(--bg-subtle);
}

.theme-toggle svg {
  inline-size: 1.1rem;
  block-size: 1.1rem;
  flex: none;
}

/* Show appropriate icon based on active scheme without needing JS */
.theme-icon--sun {
  display: none;
}
.theme-icon--moon {
  display: block;
}

@media (prefers-color-scheme: dark) {
  .theme-icon--sun {
    display: block;
  }
  .theme-icon--moon {
    display: none;
  }
}

:root:has(> head > meta[name="color-scheme"][content="dark"]) .theme-icon--sun {
  display: block;
}
:root:has(> head > meta[name="color-scheme"][content="dark"]) .theme-icon--moon {
  display: none;
}
:root:has(> head > meta[name="color-scheme"][content="light"]) .theme-icon--sun {
  display: none;
}
:root:has(> head > meta[name="color-scheme"][content="light"]) .theme-icon--moon {
  display: block;
}

/* Main Container & Tabpanel Grid Cell Stacking (per modern-web-guidance `tabs` hidden=until-found) */
main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.lens-panel {
  grid-area: 1 / 1;
  min-inline-size: 0;
  /* Zero padding/margin/border on role="tabpanel" itself so hidden="until-found" renders no strip */
}

.lens-panel__inner {
  max-inline-size: var(--max-width);
  margin-inline: auto;
  padding: 2.25rem 1.25rem 4rem;
}

/* Editorial Typography */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin: 0 0 0.65rem;
}

h1,
h2,
h3 {
  font-family: var(--font-serif);
  color: var(--text-primary);
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin-block-start: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.1rem);
  margin-block-end: 1rem;
  max-inline-size: 22ch;
}

h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  margin-block-end: 0.65rem;
}

h3 {
  font-size: 1.2rem;
  margin-block-end: 0.45rem;
}

.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  color: var(--text-secondary);
  max-inline-size: 66ch;
  margin: 0 0 1.75rem;
}

.section-block {
  margin-block-start: 3.25rem;
  padding-block-start: 2.75rem;
  border-block-start: 1px solid var(--border-subtle);
}

.section-header {
  margin-block-end: 1.75rem;
}

.section-header p {
  color: var(--text-secondary);
  max-inline-size: 68ch;
  margin: 0;
}

/* Hero Layout */
.hero-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
  box-shadow: 0 8px 28px var(--surface-shadow);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block-end: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-block-size: 2.75rem;
  padding: 0.625rem 1.15rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.925rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn--primary {
  background-color: var(--accent);
  color: var(--on-accent);
}

.btn--primary:hover {
  filter: brightness(0.94);
}

.btn--secondary {
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn--secondary:hover {
  border-color: var(--border-strong);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12.5rem, 1fr));
  gap: 1rem;
  padding-block-start: 1.5rem;
  border-block-start: 1px solid var(--border-subtle);
}

.stat-tile {
  padding: 0.85rem 1rem;
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.stat-value {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-block-start: 0.2rem;
}

.stat-sub {
  display: block;
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-block-start: 0.15rem;
}

/* Interactive Panel Time & Access Visualizer */
.visualizer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.25fr);
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 54rem) {
  .visualizer-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 4px 16px var(--surface-shadow);
}

.control-group {
  margin-block-end: 1.25rem;
}

.control-group:last-child {
  margin-block-end: 0;
}

.control-label-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-end: 0.35rem;
}

.control-label-row label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.control-output {
  font-family: var(--font-mono);
  font-size: 0.925rem;
  font-weight: 700;
  color: var(--accent-strong);
}

.control-hint {
  display: block;
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-block-end: 0.4rem;
}

/* Brand-Consistent Native Range Slider (separate WebKit & Firefox blocks per modern-web-guidance) */
input[type="range"] {
  --slider-track-size: 0.5rem;
  --slider-thumb-size: 1.25rem;
  --slider-track-radius: 999px;
  --slider-thumb-radius: 50%;
  --slider-track-color: var(--border-subtle);
  --slider-fill-color: var(--accent);
  --slider-thumb-color: var(--accent);
  --slider-direction: to right;

  --attr-min: attr(min type(<number>), 0);
  --attr-max: attr(max type(<number>), 100);
  --control-value: attr(value type(<number>), 50);
  --slider-progress: calc(
    progress(var(--control-value), var(--attr-min), var(--attr-max)) * 100%
  );

  appearance: none;
  inline-size: 100%;
  block-size: 2.25rem;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

input[type="range"]:dir(rtl) {
  --slider-direction: to left;
}

@supports not (opacity: progress(1, 0, 100)) {
  input[type="range"] {
    --slider-progress: calc(
      (var(--control-value) - var(--attr-min)) /
      (var(--attr-max) - var(--attr-min)) * 100%
    );
  }
}

input[type="range"]::-webkit-slider-runnable-track {
  block-size: var(--slider-track-size);
  border: 0;
  border-radius: var(--slider-track-radius);
  background: linear-gradient(
    var(--slider-direction),
    var(--slider-fill-color) var(--slider-progress),
    var(--slider-track-color) var(--slider-progress)
  );
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  inline-size: var(--slider-thumb-size);
  block-size: var(--slider-thumb-size);
  margin-block-start: calc((var(--slider-track-size) - var(--slider-thumb-size)) / 2);
  border: 2px solid var(--bg-surface);
  border-radius: var(--slider-thumb-radius);
  background: var(--slider-thumb-color);
  box-shadow: 0 1px 4px rgb(0 0 0 / 0.25);
}

input[type="range"]::-moz-range-track {
  block-size: var(--slider-track-size);
  border: 0;
  border-radius: var(--slider-track-radius);
  background: var(--slider-track-color);
}

input[type="range"]::-moz-range-progress {
  block-size: var(--slider-track-size);
  border-radius: var(--slider-track-radius);
  background: var(--slider-fill-color);
}

input[type="range"]::-moz-range-thumb {
  inline-size: var(--slider-thumb-size);
  block-size: var(--slider-thumb-size);
  border: 2px solid var(--bg-surface);
  border-radius: var(--slider-thumb-radius);
  background: var(--slider-thumb-color);
  box-shadow: 0 1px 4px rgb(0 0 0 / 0.25);
}

input[type="range"]:focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 4px;
}

/* Slider + Number Input Pair */
.slider-number-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 6.75rem;
  gap: 0.75rem;
  align-items: center;
}

.number-input {
  inline-size: 100%;
  min-block-size: 2.35rem;
  padding: 0.35rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  text-align: right;
}

/* Panel Comparison Bars */
.comparison-bars {
  display: grid;
  gap: 1.15rem;
}

.bar-row__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.9rem;
  margin-block-end: 0.35rem;
}

.bar-track {
  block-size: 0.875rem;
  background-color: var(--bg-subtle);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.bar-fill {
  block-size: 100%;
  border-radius: 999px;
  transition: inline-size 0.2s ease;
}

.bar-fill--concierge {
  background-color: var(--accent);
}

.bar-fill--traditional {
  background-color: var(--text-secondary);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.status-pill[data-band="unhurried"] {
  color: var(--positive);
}

.status-pill[data-band="associate-needed"] {
  color: var(--accent-strong);
}

/* Diagnostics Protocol Grid */
.protocol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr));
  gap: 1.25rem;
}

.protocol-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
}

.protocol-card--featured {
  border-color: var(--accent);
  box-shadow: 0 6px 20px var(--surface-shadow);
}

.protocol-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-strong);
  display: block;
  margin-block-end: 0.35rem;
}

.protocol-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin: 0;
}

.protocol-list {
  margin: 0.5rem 0 0;
  padding-inline-start: 1.15rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.protocol-list li + li {
  margin-block-start: 0.25rem;
}

.tee-callout {
  padding-block-start: 0.85rem;
  border-block-start: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
}

/* Membership Toggle & Pricing Cards */
.membership-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.75rem;
  padding: 1rem 1.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-block-end: 1.5rem;
}

.segmented-fieldset {
  border: 0;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.segmented-fieldset legend {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  float: left;
  margin-inline-end: 0.5rem;
}

.segmented-group {
  display: inline-flex;
  background-color: var(--bg-subtle);
  padding: 0.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.segmented-option {
  position: relative;
}

.segmented-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  inset: 0;
  margin: 0;
  cursor: pointer;
}

.segmented-option span {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: calc(var(--radius-sm) - 2px);
  color: var(--text-secondary);
  cursor: pointer;
}

.segmented-option input[type="radio"]:checked + span {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: 0 1px 3px var(--surface-shadow);
}

.segmented-option input[type="radio"]:focus-visible + span {
  outline: 2.5px solid var(--accent);
  outline-offset: 2px;
}

.checkbox-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  min-block-size: 2.25rem;
}

.checkbox-pill input[type="checkbox"] {
  inline-size: 1.15rem;
  block-size: 1.15rem;
  margin: 0;
  cursor: pointer;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  gap: 1.5rem;
  margin-block-end: 2rem;
}

.plan-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
}

.plan-card--highlighted {
  border: 2px solid var(--accent);
}

.plan-price-row {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  margin-block: 0.75rem 0.25rem;
}

.plan-price {
  font-family: var(--font-serif);
  font-size: 2.35rem;
  font-weight: 700;
  line-height: 1;
}

.plan-period {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.plan-subprice {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0 0 0.75rem;
}

.savings-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--positive);
  background-color: var(--bg-subtle);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
}

.feature-list {
  margin: 0;
  padding-inline-start: 1.2rem;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.feature-list li + li {
  margin-block-start: 0.45rem;
}

/* Founder Simulator Layout */
.preset-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-block-end: 1.5rem;
}

.preset-bar__label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-inline-end: 0.35rem;
}

.preset-btn {
  appearance: none;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.42rem 0.75rem;
  min-block-size: 2.25rem;
  border-radius: 999px;
  cursor: pointer;
}

.preset-btn:hover {
  border-color: var(--accent);
}

.preset-btn[aria-pressed="true"] {
  background-color: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
}

.simulator-layout {
  display: grid;
  grid-template-columns: minmax(0, 23.5rem) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 62rem) {
  .simulator-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0.9rem;
  margin-block-end: 1.25rem;
}

.kpi-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
}

.kpi-card[data-alert="danger"] {
  border-color: var(--accent);
}

.kpi-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

.kpi-value {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  margin-block: 0.25rem 0.15rem;
  line-height: 1.15;
}

.kpi-value--positive {
  color: var(--positive);
}

.kpi-value--negative {
  color: var(--accent-strong);
}

.kpi-note {
  display: block;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* SVG 36-Month Ramp Chart */
.chart-figure {
  margin: 0 0 1.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.25rem 1rem;
}

.chart-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-block-end: 0.85rem;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-swatch {
  inline-size: 0.8rem;
  block-size: 0.22rem;
  border-radius: 2px;
}

.ramp-svg {
  display: block;
  inline-size: 100%;
  block-size: auto;
  overflow: visible;
}

.chart-caption {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-block-start: 0.65rem;
}

/* Oregon ORS § 58.375 PC / MSO Architecture Split Matrix */
.cpom-diagram {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(13rem, 0.75fr) minmax(0, 1fr);
  gap: 1rem;
  margin-block-end: 1.75rem;
}

@media (max-width: 58rem) {
  .cpom-diagram {
    grid-template-columns: minmax(0, 1fr);
  }
}

.entity-box {
  background-color: var(--bg-surface);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 1.35rem;
}

.entity-box--pc {
  border-color: var(--positive);
}

.entity-box--firewall {
  background-color: var(--bg-subtle);
  border-style: dashed;
  border-color: var(--accent);
}

.entity-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-subtle);
  margin-block-end: 0.6rem;
}

/* Interactive CPOM Checklist */
.checklist-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-end: 1rem;
}

.checklist-grid {
  display: grid;
  gap: 0.75rem;
}

.gate-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
  padding: 1rem 1.15rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.gate-item:hover {
  border-color: var(--border-strong);
}

.gate-item input[type="checkbox"] {
  inline-size: 1.2rem;
  block-size: 1.2rem;
  margin-block-start: 0.2rem;
  cursor: pointer;
}

.gate-category {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.gate-title {
  display: block;
  font-weight: 700;
  font-size: 0.95rem;
  margin-block: 0.15rem 0.25rem;
}

.gate-detail {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Roadmap & Risk Register */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1rem;
  margin-block-end: 2rem;
}

.phase-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-block-start: 3px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 1.15rem;
}

.phase-window {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-strong);
  text-transform: uppercase;
}

.risk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  gap: 1rem;
}

.risk-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.2rem;
}

.risk-rank {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-strong);
}

/* Responsive Data Tables (follows modern-web-guidance `responsive-table` with @container) */
.table-wrapper {
  overflow: auto;
  max-inline-size: 100%;
  container-type: inline-size;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background-color: var(--bg-surface);
}

table {
  inline-size: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.875rem;
}

caption {
  text-align: left;
  padding: 0.85rem 1rem;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-primary);
  background-color: var(--bg-subtle);
  border-block-end: 1px solid var(--border-subtle);
}

thead {
  position: sticky;
  inset-block-start: 0;
  z-index: 1;
}

th,
td {
  padding: 0.7rem 1rem;
  text-align: left;
  border-block-end: 1px solid var(--border-subtle);
  vertical-align: top;
}

thead th {
  background-color: var(--bg-subtle);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

tbody th {
  position: sticky;
  inset-inline-start: 0;
  background-color: var(--bg-surface);
  font-weight: 600;
}

tbody tr:last-child th,
tbody tr:last-child td {
  border-block-end: 0;
}

.num-col {
  text-align: right;
}

@container (width < 560px) {
  table,
  thead,
  tbody,
  tr,
  th,
  td {
    display: block;
  }

  thead {
    display: none;
  }

  tbody tr {
    border-block-end: 2px solid var(--border-subtle);
    padding-block: 0.35rem;
  }

  tbody th {
    position: static;
    background-color: var(--bg-subtle);
    font-weight: 700;
  }

  td {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    text-align: right;
  }

  td::before {
    font-weight: 600;
    color: var(--text-secondary);
    text-align: left;
  }

  td:nth-child(2)::before {
    content: var(--label-2) ": ";
  }
  td:nth-child(3)::before {
    content: var(--label-3) ": ";
  }
  td:nth-child(4)::before {
    content: var(--label-4) ": ";
  }
  td:nth-child(5)::before {
    content: var(--label-5) ": ";
  }
}

/* Site Footer */
.site-footer {
  border-block-start: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  padding: 2rem 1.25rem;
  font-size: 0.825rem;
  color: var(--text-secondary);
}

.site-footer__inner {
  max-inline-size: var(--max-width);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
}

.site-footer p {
  margin: 0;
  max-inline-size: 74ch;
}