:root {
  color-scheme: light dark;
  --page: #f5f7fb;
  --page-deep: #e9edf7;
  --ink: #11131a;
  --muted: #5d6270;
  --line: rgba(17, 19, 26, 0.1);
  --surface: rgba(255, 255, 255, 0.72);
  --surface-solid: #ffffff;
  --accent: #6057f6;
  --accent-2: #04a7c8;
  --accent-soft: rgba(96, 87, 246, 0.11);
  --shadow: 0 24px 70px rgba(40, 43, 72, 0.12);
  --radius-lg: 2rem;
  --radius-md: 1.35rem;
  --max-width: 72rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #090b10;
    --page-deep: #111521;
    --ink: #f6f7fb;
    --muted: #a7adbb;
    --line: rgba(255, 255, 255, 0.11);
    --surface: rgba(21, 24, 34, 0.7);
    --surface-solid: #151822;
    --accent: #8c84ff;
    --accent-2: #30c3dc;
    --accent-soft: rgba(140, 132, 255, 0.15);
    --shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--page);
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 8% 4%, rgba(96, 87, 246, 0.14), transparent 27rem),
    radial-gradient(circle at 90% 18%, rgba(4, 167, 200, 0.12), transparent 28rem),
    linear-gradient(160deg, var(--page), var(--page-deep));
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 0.12em;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 62%, transparent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-180%);
  border-radius: 0.75rem;
  background: var(--surface-solid);
  color: var(--ink);
  padding: 0.65rem 0.9rem;
  box-shadow: var(--shadow);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  backdrop-filter: blur(24px) saturate(160%);
}

.site-header::after {
  position: absolute;
  right: 0;
  bottom: -1rem;
  left: 0;
  height: 1rem;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.06), transparent);
  content: "";
  opacity: 0.3;
  pointer-events: none;
}

.nav {
  display: flex;
  width: min(calc(100% - 2rem), var(--max-width));
  min-height: 4.5rem;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: -0.015em;
  text-decoration: none;
}

.brand img {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.72rem;
  box-shadow: 0 5px 16px rgba(0, 0, 0, 0.16);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-links a {
  min-height: 2.75rem;
  border-radius: 0.9rem;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.85rem;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 180ms ease, color 180ms ease, transform 100ms ease-out;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--ink);
}

.nav-links a:active,
.button:active {
  transform: scale(0.97);
}

main {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
}

.hero {
  display: grid;
  min-height: min(46rem, calc(100vh - 4.5rem));
  padding: clamp(4.5rem, 12vw, 9rem) 0 clamp(4rem, 9vw, 7rem);
  align-items: center;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.68fr);
  gap: clamp(2.5rem, 7vw, 6rem);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  font-optical-sizing: auto;
}

h1 {
  max-width: 13ch;
  margin-bottom: 1.35rem;
  font-size: clamp(3.2rem, 8vw, 6.6rem);
  font-weight: 760;
  letter-spacing: -0.055em;
  line-height: 0.94;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 3.35rem);
  font-weight: 730;
  letter-spacing: -0.04em;
  line-height: 1.04;
}

h3 {
  margin-bottom: 0.55rem;
  font-size: 1.15rem;
  letter-spacing: -0.018em;
  line-height: 1.25;
}

.lede {
  max-width: 39rem;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.34rem);
  line-height: 1.55;
}

.actions {
  display: flex;
  margin-top: 2rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  min-height: 3.1rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
  color: var(--ink);
  padding: 0.7rem 1.05rem;
  font-weight: 680;
  text-decoration: none;
  transition: transform 100ms ease-out, box-shadow 180ms ease, background-color 180ms ease;
}

.button.primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent-2) 78%, var(--accent)));
  color: #fff;
  box-shadow: 0 12px 30px color-mix(in srgb, var(--accent) 28%, transparent);
}

.button:hover {
  box-shadow: 0 10px 26px rgba(20, 24, 40, 0.1);
}

.hero-art {
  position: relative;
  display: grid;
  min-height: 25rem;
  place-items: center;
}

.hero-art::before,
.hero-art::after {
  position: absolute;
  border-radius: 999px;
  content: "";
  filter: blur(2px);
  opacity: 0.75;
}

.hero-art::before {
  width: 20rem;
  height: 20rem;
  background: linear-gradient(145deg, rgba(96, 87, 246, 0.52), rgba(4, 167, 200, 0.28));
  box-shadow: 0 35px 95px rgba(96, 87, 246, 0.26);
}

.hero-art::after {
  width: 12rem;
  height: 12rem;
  transform: translate(7rem, -8rem);
  background: rgba(52, 213, 181, 0.22);
  filter: blur(28px);
}

.hero-icon {
  position: relative;
  z-index: 2;
  width: min(18rem, 68vw);
  height: auto;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 27%;
  box-shadow: var(--shadow);
  transform: rotate(2.5deg);
}

.section {
  padding: clamp(4.5rem, 9vw, 7.5rem) 0;
}

.section-intro {
  max-width: 44rem;
  margin-bottom: 2.4rem;
}

.section-intro p,
.feature-card p,
.document-card p,
.document-card li,
.support-card p,
.support-card li {
  color: var(--muted);
}

.feature-grid,
.support-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.feature-card,
.support-card,
.document-card,
.contact-card {
  border: 1px solid var(--line);
  background: var(--surface);
  -webkit-backdrop-filter: blur(22px) saturate(145%);
  backdrop-filter: blur(22px) saturate(145%);
  box-shadow: var(--shadow);
}

.feature-card,
.support-card {
  border-radius: var(--radius-md);
  padding: 1.55rem;
}

.feature-card p,
.support-card p {
  margin-bottom: 0;
}

.glyph {
  display: grid;
  width: 2.6rem;
  height: 2.6rem;
  margin-bottom: 1.15rem;
  place-items: center;
  border-radius: 0.9rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
}

.callout {
  display: flex;
  margin: 2.5rem 0 0;
  align-items: flex-start;
  gap: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  padding: 1.25rem 1.35rem;
}

.callout strong {
  display: block;
  margin-bottom: 0.2rem;
}

.callout p {
  margin: 0;
  color: var(--muted);
}

.page-hero {
  max-width: 48rem;
  padding: clamp(5rem, 11vw, 8rem) 0 2.5rem;
}

.page-hero h1 {
  max-width: none;
  font-size: clamp(2.8rem, 7vw, 5.5rem);
}

.document-layout {
  display: grid;
  padding-bottom: 7rem;
  grid-template-columns: minmax(12rem, 0.32fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
}

.toc {
  position: sticky;
  top: 6rem;
  align-self: start;
  border-left: 1px solid var(--line);
  padding-left: 1rem;
}

.toc p {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.toc a {
  display: block;
  margin: 0.48rem 0;
  color: var(--muted);
  font-size: 0.92rem;
  text-decoration: none;
}

.toc a:hover {
  color: var(--ink);
}

.document-card {
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 5vw, 3.5rem);
}

.document-card section + section {
  margin-top: 3.25rem;
  padding-top: 3.25rem;
  border-top: 1px solid var(--line);
}

.document-card h2 {
  font-size: clamp(1.65rem, 3vw, 2.3rem);
}

.document-card h3 {
  margin-top: 1.8rem;
}

.document-card ul,
.support-card ul {
  padding-left: 1.25rem;
}

.document-card li + li,
.support-card li + li {
  margin-top: 0.55rem;
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.contact-card {
  display: flex;
  margin-top: 1rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  border-radius: var(--radius-md);
  padding: 1.4rem;
}

.contact-card p {
  margin: 0;
}

.site-footer {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
  padding: 2.25rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a {
  color: inherit;
}

@media (max-width: 760px) {
  .nav {
    min-height: 4.15rem;
  }

  .nav-links a {
    padding-inline: 0.62rem;
    font-size: 0.9rem;
  }

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

  .hero-art {
    min-height: 19rem;
    order: -1;
  }

  .hero-art::before {
    width: 15rem;
    height: 15rem;
  }

  .feature-grid,
  .support-grid,
  .document-layout {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
    display: flex;
    overflow-x: auto;
    border-left: 0;
    padding: 0 0 0.5rem;
    gap: 0.8rem;
    scrollbar-width: thin;
  }

  .toc p {
    display: none;
  }

  .toc a {
    flex: 0 0 auto;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.42rem 0.75rem;
  }

  .contact-card,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .hero-icon {
    transform: none;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header,
  .feature-card,
  .support-card,
  .document-card,
  .contact-card {
    background: var(--surface-solid);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

@media (prefers-contrast: more) {
  :root {
    --line: currentColor;
    --surface: var(--surface-solid);
  }

  .site-header {
    background: var(--surface-solid);
  }
}