/* ==========================================================================
   ANDIP LIVE — Core Design System
   The Intelligence Behind Every AI Conversation.
   Static, file:// compatible. No external dependencies.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand palette */
  --navy: #101d35;
  --navy-800: #172946;
  --navy-700: #1e3357;
  --navy-600: #2a4068;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-soft: #e8eefe;
  --blue-softer: #f2f6ff;
  --teal: #14b8a6;
  --teal-dark: #0f9c8d;
  --teal-soft: #e2f7f4;
  --amber: #f59e57;
  --amber-dark: #d97f34;
  --amber-soft: #fdf0e3;
  --off: #f7f9fc;
  --white: #ffffff;
  --ink: #182338;
  --ink-soft: #41506b;
  --ink-muted: #64748b;

  /* Borders & surfaces */
  --line: #e3e8f0;
  --line-strong: #d3dae6;
  --surface: #ffffff;
  --surface-alt: #f7f9fc;
  --surface-navy: #101d35;

  /* Typography */
  --font-sans: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue",
    Arial, "Noto Sans", sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;

  /* Fluid type scale */
  --fs-display: clamp(2.35rem, 1.35rem + 3.6vw, 4.1rem);
  --fs-h1: clamp(2rem, 1.35rem + 2.3vw, 3rem);
  --fs-h2: clamp(1.55rem, 1.2rem + 1.35vw, 2.15rem);
  --fs-h3: clamp(1.2rem, 1.05rem + 0.6vw, 1.5rem);
  --fs-h4: clamp(1.05rem, 0.98rem + 0.3vw, 1.2rem);
  --fs-body-lg: clamp(1.05rem, 1rem + 0.25vw, 1.2rem);
  --fs-body: 1rem;
  --fs-sm: 0.9375rem;
  --fs-xs: 0.8125rem;
  --fs-label: 0.75rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.75rem;
  --space-8: 3.5rem;
  --space-9: 5rem;
  --space-10: 6.5rem;

  /* Layout */
  --container: 1180px;
  --container-narrow: 880px;
  --container-wide: 1320px;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-pill: 999px;

  /* Elevation */
  --shadow-xs: 0 1px 2px rgba(16, 29, 53, 0.06);
  --shadow-sm: 0 1px 3px rgba(16, 29, 53, 0.07), 0 1px 2px rgba(16, 29, 53, 0.04);
  --shadow: 0 6px 18px -6px rgba(16, 29, 53, 0.14), 0 2px 6px rgba(16, 29, 53, 0.05);
  --shadow-lg: 0 22px 48px -22px rgba(16, 29, 53, 0.32), 0 6px 16px -8px rgba(16, 29, 53, 0.12);

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 220ms;

  --header-h: 68px;
}

/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.68;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.5em;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.018em;
  color: var(--ink);
}

h1 {
  font-size: var(--fs-h1);
}
h2 {
  font-size: var(--fs-h2);
}
h3 {
  font-size: var(--fs-h3);
}
h4 {
  font-size: var(--fs-h4);
}

p {
  margin: 0 0 1.1em;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--blue-dark);
  text-decoration: none;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}

a:hover {
  color: var(--navy);
  text-decoration: underline;
}

ul,
ol {
  margin: 0 0 1.1em;
  padding-left: 1.25em;
}

li {
  margin-bottom: 0.4em;
}

img,
svg,
video {
  max-width: 100%;
  height: auto;
}

img {
  display: block;
}

strong {
  font-weight: 650;
}

code,
kbd,
pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

code {
  background: var(--blue-softer);
  color: var(--navy-700);
  padding: 0.12em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  word-break: break-word;
}

pre {
  background: var(--navy);
  color: #dbe6f7;
  padding: var(--space-5);
  border-radius: var(--radius);
  overflow-x: auto;
  line-height: 1.6;
  margin: 0 0 1.25em;
  border: 1px solid var(--navy-700);
}

pre code {
  background: none;
  border: 0;
  color: inherit;
  padding: 0;
  font-size: 0.875rem;
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: var(--space-7) 0;
}

blockquote {
  margin: 0 0 1.25em;
  padding: var(--space-4) var(--space-5);
  border-left: 3px solid var(--teal);
  background: var(--teal-soft);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--navy-700);
}

::selection {
  background: rgba(37, 99, 235, 0.16);
}

/* Focus visibility — WCAG */
:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
  border-radius: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--navy);
  color: var(--white);
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radius) 0;
  font-weight: 600;
}

.skip-link:focus {
  left: 0;
  color: var(--white);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   3. Layout primitives
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.section {
  padding-block: clamp(3.25rem, 2rem + 5vw, 6rem);
  position: relative;
}

.section--tight {
  padding-block: clamp(2.25rem, 1.5rem + 3vw, 3.5rem);
}

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

.section--navy {
  background: var(--navy);
  color: #cdd9ec;
}

.section--navy h1,
.section--navy h2,
.section--navy h3,
.section--navy h4 {
  color: var(--white);
}

.section--navy p,
.section--navy li {
  color: #b8c6dd;
}

.section--navy a {
  color: #8fb4ff;
}

.section--navy a:hover {
  color: var(--white);
}

.section-head {
  max-width: 780px;
  margin-bottom: clamp(1.75rem, 1rem + 2vw, 3rem);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head p {
  font-size: var(--fs-body-lg);
  color: var(--ink-soft);
  margin-bottom: 0;
}

.section--navy .section-head p {
  color: #a9bad3;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-dark);
  margin-bottom: var(--space-3);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  flex: none;
}

.section--navy .eyebrow {
  color: #6fd7ca;
}

.lead {
  font-size: var(--fs-body-lg);
  color: var(--ink-soft);
  line-height: 1.62;
}

.section--navy .lead {
  color: #b3c2da;
}

.text-center {
  text-align: center;
}

.muted {
  color: var(--ink-muted);
}

.small {
  font-size: var(--fs-sm);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Section index number, mirroring the deck's "04" chip */
.section-num {
  display: inline-block;
  font-size: var(--fs-label);
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--teal-dark);
  margin-bottom: var(--space-2);
}

/* --------------------------------------------------------------------------
   4. Site header & navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(150%) blur(10px);
  -webkit-backdrop-filter: saturate(150%) blur(10px);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--navy);
  flex: none;
}

.brand:hover {
  text-decoration: none;
  color: var(--navy);
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: none;
}

.brand-text {
  font-size: 1.0625rem;
  line-height: 1;
  white-space: nowrap;
}

.brand-text em {
  font-style: normal;
  font-weight: 500;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.6rem;
  cursor: pointer;
  color: var(--navy);
  line-height: 0;
}

.nav-toggle:hover {
  border-color: var(--blue);
}

.nav-toggle-bars {
  display: block;
  width: 22px;
}

.nav-toggle-bars span {
  display: block;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle-bars span + span {
  margin-top: 5px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list > li {
  margin: 0;
  position: relative;
}

.nav-list a {
  display: block;
  padding: 0.5rem 0.7rem;
  font-size: 0.9125rem;
  font-weight: 550;
  color: var(--ink-soft);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.nav-list a:hover {
  color: var(--navy);
  background: var(--blue-softer);
  text-decoration: none;
}

.nav-list a[aria-current="page"],
.nav-list a.is-active {
  color: var(--blue-dark);
  font-weight: 700;
  background: var(--blue-soft);
}

/* Dropdown groups */
.nav-group > .nav-group-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9125rem;
  font-weight: 550;
  color: var(--ink-soft);
  padding: 0.5rem 0.7rem;
  border-radius: var(--radius-sm);
}

.nav-group > .nav-group-toggle:hover {
  color: var(--navy);
  background: var(--blue-softer);
}

.nav-group-toggle .caret {
  width: 9px;
  height: 9px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform var(--dur) var(--ease);
}

.nav-group.is-open > .nav-group-toggle .caret {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.nav-group.is-open > .nav-group-toggle {
  color: var(--blue-dark);
  background: var(--blue-soft);
}

.nav-sub {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 258px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  list-style: none;
  margin: 0;
  display: none;
  z-index: 20;
}

.nav-group.is-open > .nav-sub {
  display: block;
}

.nav-sub a {
  display: block;
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.8875rem;
  color: var(--ink-soft);
  white-space: normal;
}

.nav-sub a strong {
  display: block;
  color: var(--navy);
  font-size: 0.9125rem;
  font-weight: 650;
}

.nav-sub a span {
  display: block;
  font-size: 0.8rem;
  color: var(--ink-muted);
  line-height: 1.45;
}

.nav-sub a:hover {
  background: var(--blue-softer);
  text-decoration: none;
}

.nav-sub a:hover strong {
  color: var(--blue-dark);
}

.nav-sub a.is-active {
  background: var(--blue-soft);
}

/* --------------------------------------------------------------------------
   5. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.78rem 1.4rem;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 650;
  line-height: 1.2;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--blue-dark);
  color: var(--white);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: var(--white);
  color: var(--navy);
  border-color: var(--line-strong);
}

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

.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.32);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--white);
}

.btn-teal {
  background: var(--teal);
  color: #04302c;
}

.btn-teal:hover {
  background: var(--teal-dark);
  color: var(--white);
}

.btn-lg {
  padding: 0.95rem 1.7rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 0.85rem;
  font-size: 0.8375rem;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.btn-row--center {
  justify-content: center;
}

/* --------------------------------------------------------------------------
   6. Cards & panels
   -------------------------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-xs);
  position: relative;
  height: 100%;
}

.card h3 {
  margin-bottom: 0.4em;
}

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

.card--accent-teal {
  border-top: 3px solid var(--teal);
}

.card--accent-blue {
  border-top: 3px solid var(--blue);
}

.card--accent-amber {
  border-top: 3px solid var(--amber);
}

.card--accent-navy {
  border-top: 3px solid var(--navy);
}

.card--flat {
  box-shadow: none;
}

.card--navy {
  background: var(--navy);
  border-color: var(--navy-700);
  color: #c3d0e5;
}

.card--navy h3,
.card--navy h4 {
  color: var(--white);
}

.card--navy p {
  color: #b0c0d8;
}

/* Left accent bar cards (deck vocabulary) */
.bar-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: var(--shadow-xs);
  height: 100%;
}

.bar-card--teal {
  border-left-color: var(--teal);
}
.bar-card--amber {
  border-left-color: var(--amber);
}
.bar-card--navy {
  border-left-color: var(--navy);
}
.bar-card--slate {
  border-left-color: var(--ink-muted);
}

.bar-card h3,
.bar-card h4 {
  margin-bottom: 0.3em;
  font-size: 1.0625rem;
}

.bar-card p {
  font-size: var(--fs-sm);
  color: var(--ink-soft);
}

.bar-card p:last-child {
  margin-bottom: 0;
}

/* Pill label */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--blue-soft);
  color: var(--blue-dark);
  line-height: 1.35;
}

.pill--teal {
  background: var(--teal-soft);
  color: #0b7c70;
}
.pill--amber {
  background: var(--amber-soft);
  color: #a85f1c;
}
.pill--navy {
  background: var(--navy);
  color: #cfe0ff;
}
.pill--outline {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink-muted);
}
.pill--ghost-light {
  background: rgba(255, 255, 255, 0.1);
  color: #cfe0ff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Status dot */
.status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: var(--fs-xs);
  font-weight: 650;
  color: var(--ink-soft);
}

.status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  flex: none;
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.16);
}

.status--amber::before {
  background: var(--amber);
  box-shadow: 0 0 0 3px rgba(245, 158, 87, 0.18);
}

.status--blue::before {
  background: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.16);
}

/* --------------------------------------------------------------------------
   7. Grids
   -------------------------------------------------------------------------- */
.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.grid-2-1 {
  grid-template-columns: 1.35fr 1fr;
}
.grid-1-2 {
  grid-template-columns: 1fr 1.35fr;
}

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

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

/* --------------------------------------------------------------------------
   8. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  background: var(--navy);
  color: #c9d6ea;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
      62% 78% at 12% 8%,
      rgba(37, 99, 235, 0.34) 0%,
      rgba(37, 99, 235, 0) 62%
    ),
    radial-gradient(48% 62% at 92% 84%, rgba(20, 184, 166, 0.26) 0%, rgba(20, 184, 166, 0) 66%);
  z-index: -1;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(70% 70% at 50% 40%, #000 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(70% 70% at 50% 40%, #000 0%, transparent 100%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  gap: clamp(2rem, 1rem + 4vw, 4.5rem);
  align-items: center;
  padding-block: clamp(3rem, 2rem + 5vw, 5.5rem);
}

.hero-copy {
  max-width: 620px;
}

.hero h1 {
  font-size: var(--fs-display);
  color: var(--white);
  letter-spacing: -0.032em;
  line-height: 1.06;
  margin-bottom: 0.42em;
}

.hero-sub {
  font-size: clamp(1.075rem, 1rem + 0.7vw, 1.4rem);
  font-weight: 600;
  color: #9fd9d1;
  margin-bottom: 0.9em;
  line-height: 1.4;
}

.hero-desc {
  font-size: var(--fs-body-lg);
  color: #b1c1da;
  max-width: 560px;
  margin-bottom: var(--space-6);
}

.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #7fd8cd;
  border: 1px solid rgba(20, 184, 166, 0.35);
  background: rgba(20, 184, 166, 0.1);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-5);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: var(--fs-sm);
}

.hero-meta div {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.hero-meta dt {
  font-size: var(--fs-label);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #7f92ad;
  font-weight: 700;
}

.hero-meta dd {
  margin: 0;
  color: var(--white);
  font-weight: 650;
}

.hero-visual {
  position: relative;
}

.hero-visual svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Page hero (interior pages) */
.page-hero {
  background: var(--navy);
  color: #c2cfe4;
  position: relative;
  overflow: hidden;
  padding-block: clamp(2.75rem, 2rem + 4vw, 4.5rem);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    55% 120% at 8% 0%,
    rgba(37, 99, 235, 0.32) 0%,
    rgba(37, 99, 235, 0) 60%
  );
  pointer-events: none;
}

.page-hero .container,
.page-hero .container-narrow {
  position: relative;
}

.page-hero h1 {
  color: var(--white);
  max-width: 900px;
  letter-spacing: -0.028em;
  margin-bottom: 0.35em;
}

.page-hero p {
  max-width: 720px;
  color: #aebed6;
  font-size: var(--fs-body-lg);
  margin-bottom: 0;
}

.page-hero .eyebrow {
  color: #6fd7ca;
}

/* Breadcrumbs */
.breadcrumb {
  font-size: var(--fs-xs);
  margin-bottom: var(--space-4);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb li {
  margin: 0;
  color: #8395ae;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.breadcrumb li + li::before {
  content: "/";
  color: #4c5f7d;
}

.breadcrumb a {
  color: #9fb2cd;
}

.breadcrumb a:hover {
  color: var(--white);
}

.breadcrumb [aria-current="page"] {
  color: #d5e0f0;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   9. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--navy);
  color: #9fb0c9;
  padding-block: var(--space-8) var(--space-5);
  font-size: var(--fs-sm);
  border-top: 1px solid var(--navy-700);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: var(--space-6) var(--space-5);
  padding-bottom: var(--space-7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .brand {
  color: var(--white);
  margin-bottom: var(--space-4);
}

.footer-brand .brand:hover {
  color: var(--white);
}

.footer-brand .brand-text em {
  color: #8fa2bd;
}

.footer-brand p {
  color: #93a6c0;
  max-width: 340px;
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.footer-col h4 {
  color: var(--white);
  font-size: var(--fs-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  font-weight: 700;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin-bottom: 0.55rem;
}

.footer-col a {
  color: #a3b5ce;
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: var(--white);
  text-decoration: none;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-5);
  font-size: var(--fs-xs);
  color: #8598b2;
}

.footer-bottom p {
  margin: 0;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-legal a {
  color: #8598b2;
}

.footer-legal a:hover {
  color: var(--white);
}

/* --------------------------------------------------------------------------
   10. Utilities
   -------------------------------------------------------------------------- */
.divider {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: var(--space-6) 0;
}

.divider--navy {
  background: rgba(255, 255, 255, 0.12);
}

.callout {
  border: 1px solid var(--line);
  border-left: 4px solid var(--amber);
  background: var(--amber-soft);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
  color: #6d4419;
  font-size: var(--fs-sm);
}

.callout--teal {
  border-left-color: var(--teal);
  background: var(--teal-soft);
  color: #0b5d55;
}

.callout--blue {
  border-left-color: var(--blue);
  background: var(--blue-soft);
  color: #17357c;
}

.callout--navy {
  border-left-color: var(--navy);
  background: var(--surface-alt);
  color: var(--ink-soft);
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout strong {
  color: inherit;
}

.callout-title {
  display: block;
  font-weight: 700;
  margin-bottom: 0.25rem;
  letter-spacing: 0.01em;
}

.note-strip {
  background: var(--navy);
  color: #cbd8ea;
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
  text-align: center;
  font-size: var(--fs-sm);
}

.note-strip strong {
  color: var(--white);
}

/* Back to top */
.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 90;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--white);
  color: var(--navy);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
    visibility var(--dur);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover {
  border-color: var(--blue);
  color: var(--blue-dark);
}

/* Legend used by diagrams */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-4);
  font-size: var(--fs-xs);
  color: var(--ink-soft);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.legend-swatch {
  width: 13px;
  height: 13px;
  border-radius: 3px;
  flex: none;
}

.legend-swatch--blue {
  background: var(--blue);
}
.legend-swatch--teal {
  background: var(--teal);
}
.legend-swatch--amber {
  background: var(--amber);
}
.legend-swatch--navy {
  background: var(--navy);
}
.legend-swatch--slate {
  background: var(--ink-muted);
}

/* Diagram shell */
.diagram {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.diagram--alt {
  background: var(--surface-alt);
}

.diagram-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.diagram-title h3,
.diagram-title h4 {
  margin: 0;
}

.diagram-title p {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--ink-muted);
}

.diagram svg {
  width: 100%;
  height: auto;
  display: block;
}

.diagram-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.diagram-scroll svg {
  min-width: 720px;
}

/* --------------------------------------------------------------------------
   11. Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .btn:hover {
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   12. Print
   -------------------------------------------------------------------------- */
@media print {
  .site-header,
  .to-top,
  .site-footer,
  .nav-toggle {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .hero,
  .page-hero,
  .section--navy {
    background: #fff !important;
    color: #000 !important;
  }

  .hero h1,
  .page-hero h1,
  .section--navy h2 {
    color: #000 !important;
  }

  a::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #555;
  }
}