/**
 * 1. CSS Reset / Normalize
 */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  min-height: 100vh;
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

input,
button,
textarea,
select {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
  padding: 0;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 0.1875rem solid var(--color-focus);
  outline-offset: 0.125rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


/**
 * 2. Design tokens (custom properties)
 */

:root {
  /* Brand colors */
  --color-primary: #03517f;
  --color-primary-hover: #023d61;
  --color-primary-active: #022f4a;
  --color-primary-tint: #e7eef4;
  --color-secondary: #c10000;
  --color-secondary-hover: #9c0000;
  --color-secondary-tint: #fbebeb;

  /* Accent (success / CTA) */
  --color-success: #1a8a3f;
  --color-success-hover: #157033;

  /* Neutrals */
  --color-text: #14242e;
  --color-text-muted: #51646f;
  --color-heading: #0b1a22;
  --color-border: #dde4ea;
  --color-background: #ffffff;
  --color-surface: #f4f7fa;

  /* States */
  --color-on-primary: #ffffff;
  --color-focus: #03517f;

  /* Typography */
  --font-family-base: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-family-heading: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3.25rem;
  --line-height-tight: 1.2;
  --line-height-base: 1.6;
  --line-height-relaxed: 1.8;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Borders */
  --border-radius: 0.25rem;
  --border-width: 1px;
  --border-color: var(--color-border);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 6px 16px rgba(11, 26, 34, 0.08);
  --shadow-lg: 0 16px 32px rgba(11, 26, 34, 0.12);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Z-index scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;

  /* Layout */
  --container-max-width: 75rem;
  --container-padding: var(--space-md);
  --header-height: 4.5rem;
}


/**
 * 3. Base / element styles
 */

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-background);
}

h1, h2, h3, h4 {
  font-family: var(--font-family-heading);
  color: var(--color-heading);
  line-height: var(--line-height-tight);
  font-weight: var(--font-weight-bold);
}

p {
  text-wrap: pretty;
}

strong {
  font-weight: var(--font-weight-semibold);
}

.skip-link {
  position: absolute;
  left: 50%;
  top: -3rem;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: var(--border-radius);
  transition: top var(--transition-base);
}

.skip-link:focus {
  top: var(--space-sm);
}

.text-highlight {
  color: var(--color-secondary);
  font-weight: var(--font-weight-bold);
}

.text-highlight-2 {
  text-decoration: underline;
}


/**
 * 4. Layout (containers, grids, page structure)
 */

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

.section {
  padding-block: var(--space-3xl);
}

.section-surface {
  background-color: var(--color-surface);
}

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

.section-narrow {
  max-width: 54rem;
}

.section-head {
  max-width: 48rem;
  margin-bottom: var(--space-2xl);
}

.section-head-light {
  margin-inline: auto;
}

.section-eyebrow {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: var(--space-sm);
}

.section-eyebrow-light {
  color: #9fc4dd;
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-extrabold);
}

.section-title-light {
  color: var(--color-on-primary);
}

.section-subtitle {
  margin-top: var(--space-md);
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
}

.section-subtitle-light {
  color: #cfe0ec;
}

.prose p + p {
  margin-top: var(--space-md);
}

.prose {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
}


/**
 * 5. Components
 */

/* --- Buttons --- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border: var(--border-width) solid transparent;
  border-radius: var(--border-radius);
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              transform var(--transition-fast);
}

.button:active {
  transform: translateY(0.0625rem);
}

.button-lg {
  padding: var(--space-lg) var(--space-2xl);
  font-size: var(--font-size-md);
}

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

.button-primary:hover {
  background-color: var(--color-primary-hover);
}

.button-secondary {
  background-color: var(--color-secondary);
  color: var(--color-on-primary);
}

.button-secondary:hover {
  background-color: var(--color-secondary-hover);
}

.button-success {
  background-color: var(--color-success);
  color: var(--color-on-primary);
}

.button-success:hover {
  background-color: var(--color-success-hover);
}

.button-outline-light {
  background-color: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: var(--color-on-primary);
}

.button-outline-light:hover {
  background-color: rgba(255, 255, 255, 0.12);
}

.icon {
  flex-shrink: 0;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-background);
  border-bottom: var(--border-width) solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  min-height: var(--header-height);
}

.brand-logo {
  height: 2.75rem;
  width: auto;
}

.nav-primary {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  padding-block: var(--space-sm);
  transition: color var(--transition-fast);
}

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

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: transparent;
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius);
  color: var(--color-primary);
}

.nav-toggle .icon-close {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icon-menu {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icon-close {
  display: block;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.phone-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.phone-link:hover {
  color: var(--color-primary-hover);
}

/* --- Hero --- */
.hero {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  padding-block: var(--space-4xl) var(--space-3xl);
}

.hero-inner {
  max-width: 54rem;
}

.hero-eyebrow {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: #cfe0ec;
  padding: var(--space-xs) var(--space-md);
  border: var(--border-width) solid rgba(255, 255, 255, 0.25);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-lg);
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-on-primary);
  letter-spacing: -0.02em;
}

.hero-title-accent {
  display: block;
  margin-top: var(--space-xs);
  color: #ffd2d2;
}

.hero-lead {
  margin-top: var(--space-lg);
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  color: #e3edf4;
  max-width: 44rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
  margin-top: var(--space-3xl);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.hero-stat[aria-hidden="true"] {
  width: 0.0625rem;
  align-self: stretch;
  background-color: rgba(255, 255, 255, 0.25);
}

.hero-stat-value {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-on-primary);
  line-height: 1;
}

.hero-stat-label {
  font-size: var(--font-size-sm);
  color: #bcd0de;
}

/* --- Cards --- */
.card-grid {
  display: grid;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.card-grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.card {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-xl);
  background-color: var(--color-background);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base),
              transform var(--transition-base),
              border-color var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-0.1875rem);
  border-color: var(--color-primary-tint);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--color-primary-tint);
  color: var(--color-primary);
  border-radius: var(--border-radius);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

.card-text {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-muted);
}

/* --- Plan cards --- */
.card-plan {
  position: relative;
  border-top: 0.1875rem solid var(--color-primary);
}

.card-plan-badge {
  align-self: flex-start;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-secondary);
  background-color: var(--color-secondary-tint);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius);
}

/* --- Timeline (vesting) --- */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-md);
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
}

.timeline-step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-xl);
  background-color: rgba(255, 255, 255, 0.08);
  border: var(--border-width) solid rgba(255, 255, 255, 0.18);
  border-radius: var(--border-radius);
  counter-increment: step;
}

.timeline-step::before {
  content: counter(step);
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: #9fc4dd;
  border: var(--border-width) solid rgba(255, 255, 255, 0.3);
  width: 1.75rem;
  height: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.timeline-step-feature {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.timeline-step-feature::before {
  color: #ffd2d2;
  border-color: rgba(255, 255, 255, 0.5);
}

.timeline-years {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #cfe0ec;
}

.timeline-step-feature .timeline-years {
  color: #ffe3e3;
}

.timeline-share {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-on-primary);
  line-height: 1;
}

.timeline-text {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: #cfe0ec;
}

.timeline-step-feature .timeline-text {
  color: #ffeaea;
}

/* --- FAQ --- */
.faq {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.faq-item {
  background-color: var(--color-background);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-heading);
  cursor: pointer;
  list-style: none;
}

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

.faq-chevron {
  flex-shrink: 0;
  color: var(--color-primary);
  transition: transform var(--transition-base);
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 var(--space-xl) var(--space-lg);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-muted);
}

.faq-answer p + p {
  margin-top: var(--space-sm);
}

/* --- CTA band --- */
.cta-band {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  padding-block: var(--space-3xl);
}

.cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  text-align: center;
}

.cta-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-on-primary);
}

.cta-lead {
  margin-top: var(--space-sm);
  font-size: var(--font-size-md);
  color: #cfe0ec;
  max-width: 38rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* --- Footer --- */
.site-footer {
  background-color: #0b1a22;
  color: #c4d2db;
  padding-top: var(--space-3xl);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.footer-brand .brand-logo {
  height: 2.75rem;
  filter: brightness(0) invert(1);
}

.footer-tagline {
  margin-top: var(--space-md);
  font-size: var(--font-size-sm);
  color: #9fb1bb;
  max-width: 24rem;
}

.footer-heading {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-on-primary);
  margin-bottom: var(--space-md);
}

.footer-nav ul,
.footer-contact ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-nav a,
.footer-contact a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: #c4d2db;
  transition: color var(--transition-fast);
}

.footer-nav a:hover,
.footer-contact a:hover {
  color: var(--color-on-primary);
}

.footer-legal {
  border-top: var(--border-width) solid rgba(255, 255, 255, 0.1);
  padding-block: var(--space-lg);
  font-size: var(--font-size-xs);
  color: #8fa0aa;
}

.footer-legal .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-disclaimer {
  max-width: 42rem;
}


/**
 * 6. Utilities
 */

.visually-hidden {
  position: absolute !important;
  width: 0.0625rem;
  height: 0.0625rem;
  padding: 0;
  margin: -0.0625rem;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}


/**
 * 7. Media queries (responsive overrides)
 */

/* Extra large devices (wide desktops) */
@media (max-width: 75rem) {
  :root {
    --space-3xl: 3.5rem;
    --space-4xl: 5rem;
  }
}

/* Large devices (desktops) */
@media (max-width: 62rem) {
  .card-grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

/* Medium devices (tablets) */
@media (max-width: 48rem) {
  :root {
    --space-3xl: 3rem;
    --header-height: 4rem;
    --font-size-4xl: 2.5rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-list {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background-color: var(--color-background);
    border-bottom: var(--border-width) solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: var(--space-md) var(--container-padding);
    display: none;
  }

  .nav-primary[data-open="true"] .nav-list {
    display: flex;
  }

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    display: block;
    width: 100%;
    padding: var(--space-md) 0;
    border-bottom: var(--border-width) solid var(--color-border);
    font-size: var(--font-size-base);
  }

  .nav-list li:last-child a {
    border-bottom: 0;
  }

  .header-cta .phone-link span {
    display: none;
  }

  .section-title,
  .cta-title {
    font-size: var(--font-size-xl);
  }

  .footer-legal .container {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Small devices (landscape phones) */
@media (max-width: 36rem) {
  :root {
    --container-padding: var(--space-lg);
    --space-3xl: 2.5rem;
  }

  .hero {
    padding-block: var(--space-3xl);
  }

  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .hero-stat[aria-hidden="true"] {
    display: none;
  }

  .card-grid-4,
  .card-grid-2 {
    grid-template-columns: 1fr;
  }

  .timeline {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .button-lg {
    width: 100%;
  }
}