:root {
  color-scheme: dark;
  /* Palette: Bold Dark Obsidian + Minimalist Ice Cyan */
  --bg-base: #090b0f;
  --bg-surface: #11161e;
  --bg-elevated: #171e29;
  --border-subtle: #232c3b;
  --border-strong: #324056;

  --text-primary: #f3f6fa;
  --text-secondary: #a6b2c4;
  --text-muted: #94a3b8;

  --accent: #38bdf8;
  --accent-hover: #7dd3fc;
  --accent-soft: rgba(56, 189, 248, 0.14);
  --accent-ink: #06131d;

  --success: #34d399;
  --success-soft: rgba(52, 211, 153, 0.14);
  --error: #f87171;
  --error-soft: rgba(248, 113, 113, 0.14);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: clamp(1.625rem, 3vw, 2.25rem);
  --text-hero: clamp(2.15rem, 5.2vw, 3.75rem);

  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;

  /* Radii & Elevation */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-pill: 999px;
  --shadow-card: 0 18px 40px -24px rgba(0, 0, 0, 0.85);

  /* Layout & Motion */
  --container-max: 70rem;
  --narrow-max: 48rem;
  --transition-fast: 160ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent-hover);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: var(--space-3);
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.skip-link:focus {
  left: var(--space-4);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.narrow-container {
  max-width: var(--narrow-max);
}

.score-container {
  max-width: 54rem;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9, 11, 15, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 4.25rem;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

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

.brand-name span {
  color: var(--accent);
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 1.125rem;
  height: 2px;
  margin-inline: auto;
  background-color: var(--text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

.site-nav.is-open {
  display: flex;
}

.site-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--text-sm);
  padding-block: var(--space-1);
}

.site-nav a:hover {
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: inherit;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.btn-sm {
  padding: 0.55rem 0.95rem;
  font-size: var(--text-sm);
}

.btn-lg {
  padding: 0.9rem 1.4rem;
  font-size: var(--text-base);
}

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

.site-nav a.btn-primary {
  color: var(--accent-ink);
}

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

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

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

.link-btn {
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  cursor: pointer;
}

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

/* Typography & Sections */
.eyebrow {
  margin: 0 0 var(--space-3);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2,
h3 {
  margin: 0 0 var(--space-3);
  letter-spacing: -0.025em;
  line-height: 1.15;
}

h1 {
  font-size: var(--text-hero);
  font-weight: 800;
}

h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
}

h3 {
  font-size: var(--text-xl);
  font-weight: 700;
}

p {
  margin: 0 0 var(--space-4);
  color: var(--text-secondary);
}

.section {
  padding-block: var(--space-7);
}

.section-alt {
  background-color: var(--bg-surface);
  border-block: 1px solid var(--border-subtle);
}

.section-header {
  max-width: 42rem;
  margin-bottom: var(--space-6);
}

.section-lead {
  font-size: var(--text-lg);
  margin-bottom: 0;
}

/* Hero */
.hero {
  padding-block: var(--space-7);
}

.hero-grid {
  display: grid;
  gap: var(--space-6);
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.hero-lead {
  font-size: var(--text-lg);
  max-width: 38ch;
  margin-bottom: var(--space-5);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.hero-meta li::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: var(--space-2);
  border-radius: 50%;
  background-color: var(--accent);
  vertical-align: middle;
}

.hero-visual {
  min-width: 0;
}

.metric-card {
  background: linear-gradient(160deg, var(--bg-elevated) 0%, var(--bg-surface) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
}

.metric-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.metric-tag {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.metric-badge {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  background-color: var(--accent-soft);
  color: var(--accent);
}

.metric-ring-wrap {
  position: relative;
  width: 140px;
  height: 140px;
  margin: 0 auto var(--space-5);
}

.metric-ring-value {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.metric-ring-value strong {
  font-size: 2.25rem;
  line-height: 1;
  color: var(--text-primary);
}

.metric-ring-value span {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.metric-pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin: 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.metric-pillars dt {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.metric-pillars dd {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
}

/* Cards & Steps */
.card-grid,
.steps-grid {
  display: grid;
  gap: var(--space-4);
}

.card,
.step-item {
  min-width: 0;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.card p:last-child,
.step-item p:last-child {
  margin-bottom: 0;
}

.card-num,
.step-marker {
  display: inline-block;
  margin-bottom: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

/* Quiz & Result Panels */
.panel {
  background-color: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-3);
  box-shadow: var(--shadow-card);
}

.quiz-status-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

#quiz-progress-text {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.progress-track,
.score-bar-track {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-pill);
  background-color: var(--bg-elevated);
  overflow: hidden;
}

.progress-fill,
.score-bar-fill {
  width: 0%;
  height: 100%;
  background-color: var(--accent);
  border-radius: var(--radius-pill);
  transition: width 240ms ease;
}

.quiz-questions {
  display: grid;
  gap: var(--space-4);
}

.quiz-fieldset {
  margin: 0;
  padding: var(--space-4) 0.625rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  min-width: 0;
}

.quiz-fieldset.has-error {
  border-color: var(--error);
}

.quiz-legend {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  padding: 0;
  line-height: 1.4;
}

.quiz-legend-num {
  color: var(--accent);
  margin-right: var(--space-1);
}

.scale-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.scale-options {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.25rem;
}

.scale-option {
  position: relative;
}

.scale-option input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.scale-option label {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background-color: var(--bg-elevated);
  color: var(--text-primary);
  font-weight: 700;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.scale-option label:hover {
  border-color: var(--accent);
}

.scale-option input:checked + label {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.scale-option input:focus-visible + label {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.quiz-actions,
.lead-actions {
  margin-top: var(--space-5);
}

/* Result & Lead Capture Form */
.result-summary {
  display: grid;
  gap: var(--space-5);
  align-items: center;
}

.result-score-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.result-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.result-number {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.result-number strong {
  font-size: 3rem;
  line-height: 1;
  color: var(--text-primary);
}

.result-number span {
  font-size: var(--text-base);
  color: var(--text-muted);
}

.tier-pill {
  display: inline-block;
  margin-bottom: var(--space-2);
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background-color: var(--accent-soft);
  color: var(--accent);
}

.insight-highlights {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin: 0 0 var(--space-4);
  padding: var(--space-3);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.insight-highlights dt {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.insight-highlights dd {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
}

.panel-divider {
  border: 0;
  border-top: 1px solid var(--border-subtle);
  margin-block: var(--space-6);
}

.lead-form-header {
  margin-bottom: var(--space-4);
}

.lead-form-header p {
  margin-bottom: 0;
}

.form-grid {
  display: grid;
  gap: var(--space-4);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  min-width: 0;
}

.field label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  font-family: inherit;
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.field select {
  min-height: 2.85rem;
}

.field textarea {
  resize: vertical;
  min-height: 4.75rem;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--text-muted);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.field-checkbox {
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.field-checkbox input {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.2rem;
  flex-shrink: 0;
  accent-color: var(--accent);
}

.field-checkbox label {
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.5;
}

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-feedback {
  margin: var(--space-3) 0 0;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
}

.form-feedback-error {
  background-color: var(--error-soft);
  color: var(--error);
  border: 1px solid rgba(248, 113, 113, 0.35);
}

.form-feedback-success {
  background-color: var(--success-soft);
  color: var(--success);
  border: 1px solid rgba(52, 211, 153, 0.35);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: var(--space-3);
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  line-height: 1;
  color: var(--accent);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  margin: var(--space-3) 0 0;
  font-size: var(--text-sm);
}

/* Privacy & Footer */
.privacy-section p:last-child {
  margin-bottom: 0;
}

.site-footer {
  padding-block: var(--space-6);
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-base);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer-brand span {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-sm);
}

.footer-copy {
  margin: 0;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* Desktop Breakpoint */
@media (min-width: 48rem) {
  .container {
    padding-inline: var(--space-6);
  }

  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: var(--space-5);
    padding: 0;
    background: transparent;
    border-bottom: 0;
  }

  .section,
  .hero {
    padding-block: var(--space-8);
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr);
    gap: var(--space-7);
  }

  .hero-actions {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }

  .card-grid-3,
  .steps-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .panel {
    padding: var(--space-6);
  }

  .quiz-fieldset {
    padding: var(--space-5);
  }

  .scale-options {
    gap: var(--space-3);
  }

  .result-summary {
    grid-template-columns: minmax(0, 15rem) minmax(0, 1fr);
    gap: var(--space-6);
  }

  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-inner {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}