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

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--ff-sans);
  font-size: var(--fs-3);
  line-height: var(--lh-base);
  color: var(--c-ink);
  background:
    radial-gradient(1200px 700px at 100% -10%, rgba(99, 102, 241, 0.08), transparent 60%),
    radial-gradient(1000px 600px at -10% 110%, rgba(14, 154, 167, 0.07), transparent 60%),
    var(--c-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  flex: 1 0 auto;
  padding-top: calc(var(--header-height) + var(--space-5));
  padding-bottom: var(--space-9);
}

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

svg {
  max-width: 100%;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-display);
  line-height: var(--lh-snug);
  margin: 0 0 var(--space-3);
  color: var(--c-ink);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--fs-8); line-height: var(--lh-tight); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-6); margin-top: var(--space-7); }
h3 { font-size: var(--fs-5); margin-top: var(--space-6); }
h4 { font-size: var(--fs-4); margin-top: var(--space-5); }

p, ul, ol, blockquote, pre, table, figure {
  margin: 0 0 var(--space-4);
}

/* Paragraphs flow to container width — width is constrained by .container,
   not by an explicit prose cap, per the brief's "wide-on-desktop" rule. */

ul, ol {
  padding-left: 0;
  list-style: none;
}

li {
  position: relative;
}

li + li {
  margin-top: var(--space-2);
}

/* Body copy lists get marker indent. UI lists (footer, related, article-list,
   task-lists, site-nav, site-footer) opt out by scoping to .prose__body and
   .faq-item__body. */
.prose__body ul:not(.contains-task-list):not(.article-list) > li,
.prose__body ol:not(.contains-task-list):not(.article-list) > li,
.faq-item__body ul > li,
.faq-item__body ol > li {
  padding-left: 1.85rem;
}

/* Unordered list — coloured square-with-dot marker */
.prose__body ul:not(.contains-task-list):not(.article-list):not(.related ul) > li::before,
.faq-item__body ul > li::before {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 0.66em;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent-teal));
  box-shadow: 0 0 0 3px var(--c-primary-50);
  transform: translateY(-50%);
}

/* Ordered list — gradient pill counters */
.prose__body ol:not(.contains-task-list):not(.article-list),
.faq-item__body ol {
  counter-reset: pm-ol;
}

.prose__body ol:not(.contains-task-list):not(.article-list) > li,
.faq-item__body ol > li {
  padding-left: 2.5rem;
  counter-increment: pm-ol;
}

.prose__body ol:not(.contains-task-list):not(.article-list) > li::before,
.faq-item__body ol > li::before {
  content: counter(pm-ol);
  position: absolute;
  left: 0;
  top: 0.05em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.75rem;
  height: 1.5rem;
  padding: 0 0.45rem;
  background: linear-gradient(135deg, var(--c-primary-50), var(--c-accent-indigo-50));
  color: var(--c-primary);
  font-family: var(--ff-mono);
  font-weight: 700;
  font-size: 0.82rem;
  border-radius: var(--radius-pill);
  border: 1px solid color-mix(in srgb, var(--c-primary) 22%, transparent);
  line-height: 1;
}

/* Nested levels: alternate marker accent */
.prose__body ul ul > li::before {
  background: linear-gradient(135deg, var(--c-accent-amber), var(--c-accent-rose));
  box-shadow: 0 0 0 3px var(--c-accent-amber-50);
}

.prose__body ul ul ul > li::before {
  background: linear-gradient(135deg, var(--c-accent-indigo), var(--c-primary));
  box-shadow: 0 0 0 3px var(--c-accent-indigo-50);
}

.prose__body ul ul,
.prose__body ol ol,
.prose__body ul ol,
.prose__body ol ul {
  margin-top: var(--space-2);
  margin-bottom: var(--space-2);
}

/* Bold lead-in inside list items: paint matching the section accent */
.prose__body li > strong:first-child,
.prose__body li > p:first-child > strong:first-child {
  color: var(--c-primary);
  letter-spacing: 0.005em;
}

a {
  color: var(--c-primary);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--c-primary) 30%, transparent);
  transition: color var(--t-fast), border-color var(--t-fast), background-color var(--t-fast);
}

a:hover,
a:focus-visible {
  color: var(--c-primary-soft);
  border-bottom-color: currentColor;
}

a:focus-visible {
  outline: 2px solid var(--c-accent-indigo);
  outline-offset: 2px;
  border-radius: 2px;
}

hr {
  border: 0;
  border-top: 1px solid var(--c-border);
  margin: var(--space-6) 0;
}

blockquote {
  border-left: 4px solid var(--c-accent-indigo);
  padding: var(--space-3) var(--space-4);
  background: var(--c-accent-indigo-50);
  border-radius: 0 var(--radius-2) var(--radius-2) 0;
  color: var(--c-ink-soft);
}

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

:target,
[id] {
  scroll-margin-top: calc(var(--header-height) + var(--space-4));
}

::selection {
  background: var(--c-primary-50);
  color: var(--c-primary);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 640px) {
  h1 { font-size: var(--fs-7); }
  h2 { font-size: var(--fs-5); }
  h3 { font-size: var(--fs-4); }
}

.container {
  width: var(--content-max);
  margin-inline: auto;
}

.container--narrow {
  width: min(1100px, 94vw);
  margin-inline: auto;
}

.container--prose {
  width: min(1480px, 94vw);
  margin-inline: auto;
}

@media (min-width: 1920px) {
  .container--prose {
    width: min(1640px, 96vw);
  }
}

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

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-3);
  background: var(--c-primary);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-2);
  z-index: 1000;
  border-bottom: 0;
}

.skip-link:focus {
  top: var(--space-3);
}