:root {
  --color-cosmic-indigo: #11152f;
  --color-deep-nebula: #1b2145;
  --color-polished-obsidian: #0a0d1c;
  --color-nebula-magenta: #b43d82;
  --color-comet-cyan: #4ed9e8;
  --color-starlight-silver: #b9c4d8;
  --color-ivory-glow: #f4eedf;
  --color-star-gold: #d8b76a;
  --color-muted-plum: #382344;

  --color-text: var(--color-ivory-glow);
  --color-text-muted: var(--color-starlight-silver);
  --color-link: var(--color-ivory-glow);
  --color-link-hover: var(--color-comet-cyan);
  --color-border: rgb(185 196 216 / 24%);
  --color-border-strong: rgb(185 196 216 / 42%);
  --color-focus: var(--color-comet-cyan);

  --font-heading: "Cormorant Garamond", Georgia, serif;
  --font-body: "Space Grotesk", Arial, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lead: 1.25rem;
  --text-card-title: 1.75rem;
  --text-section-title: clamp(2rem, 4vw, 2.5rem);
  --text-display: clamp(2.625rem, 6vw, 4rem);
  --text-panorama: clamp(2.625rem, 10vw, 5.5rem);

  --line-xs: 1.4;
  --line-sm: 1.5;
  --line-base: 1.65;
  --line-lead: 1.35;
  --line-heading: 1.08;
  --line-display: 0.98;
  --line-panorama: 0.94;

  --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: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  --container-max: 77.5rem;
  --container-width: calc(100% - 3rem);
  --container-width-mobile: calc(100% - 2rem);

  --surface-base: var(--color-cosmic-indigo);
  --surface-raised: var(--color-deep-nebula);
  --surface-strong: var(--color-polished-obsidian);
  --surface-glass: rgb(27 33 69 / 78%);

  --radius-sharp: 0.125rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.75rem;

  --shadow-soft: 0 18px 50px rgb(0 0 0 / 28%);
  --shadow-glow-cyan: 0 0 0.9rem rgb(78 217 232 / 25%);
  --transition-fast: 180ms ease;
  --transition-base: 260ms ease;
}

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

html {
  min-width: 320px;
  background: var(--surface-base);
  color-scheme: dark;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 0%, rgb(56 35 68 / 62%), transparent 32rem),
    radial-gradient(circle at 90% 18%, rgb(27 33 69 / 94%), transparent 40rem),
    var(--surface-base);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: var(--line-base);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main,
header,
footer,
section,
article,
aside,
nav {
  min-width: 0;
}

img,
picture,
svg,
canvas,
video,
iframe,
embed,
object {
  display: block;
  max-width: 100%;
}

img,
video {
  height: auto;
}

svg {
  fill: currentColor;
}

iframe {
  width: 100%;
  border: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
}

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

button,
select {
  text-transform: none;
}

button,
input[type="button"],
input[type="submit"],
input[type="reset"],
label[for],
summary {
  cursor: pointer;
}

button {
  border: 0;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
  color: var(--color-text);
}

input,
select {
  min-height: 2.875rem;
  padding: 0.625rem 0.75rem;
}

textarea {
  min-height: 8rem;
  padding: 0.75rem;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: rgb(185 196 216 / 72%);
  opacity: 1;
}

input:disabled,
select:disabled,
textarea:disabled,
button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

fieldset {
  min-width: 0;
  margin: 0 0 var(--space-5);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

legend {
  padding-inline: var(--space-2);
  color: var(--color-ivory-glow);
  font-family: var(--font-heading);
  font-size: var(--text-card-title);
  line-height: var(--line-heading);
}

label {
  display: inline-block;
  margin-block-end: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: var(--line-sm);
}

progress {
  width: 100%;
  accent-color: var(--color-comet-cyan);
}

hr {
  height: 1px;
  margin: var(--space-7) 0;
  border: 0;
  background: var(--color-border);
}

a {
  color: var(--color-link);
  text-decoration-color: rgb(244 238 223 / 45%);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition:
    color var(--transition-fast),
    text-decoration-color var(--transition-fast);
}

a:hover {
  color: var(--color-link-hover);
  text-decoration-color: currentColor;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 var(--space-4);
  color: var(--color-ivory-glow);
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 {
  font-size: var(--text-display);
  line-height: var(--line-display);
}

h2 {
  font-size: var(--text-section-title);
  line-height: var(--line-heading);
}

h3 {
  font-size: var(--text-card-title);
  line-height: 1.15;
}

h4 {
  font-size: var(--text-lead);
  line-height: var(--line-lead);
}

h5,
h6 {
  font-size: var(--text-base);
  line-height: var(--line-base);
}

p {
  margin: 0 0 var(--space-5);
}

ul,
ol {
  margin: 0 0 var(--space-5);
  padding-inline-start: 1.25rem;
}

ul ul,
ul ol,
ol ul,
ol ol {
  margin-block: var(--space-2) 0;
}

li::marker {
  color: var(--color-comet-cyan);
}

blockquote {
  margin: 0 0 var(--space-5);
  padding: var(--space-3) 0 var(--space-3) var(--space-5);
  border-inline-start: 2px solid var(--color-comet-cyan);
  color: var(--color-ivory-glow);
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  line-height: 1.15;
}

blockquote p {
  margin-block-end: var(--space-3);
}

blockquote cite {
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-style: normal;
  line-height: var(--line-sm);
}

figure {
  margin: 0 0 var(--space-5);
}

figcaption {
  margin-block-start: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: var(--line-sm);
}

dl {
  margin: 0 0 var(--space-5);
}

dt {
  color: var(--color-ivory-glow);
  font-weight: 600;
}

dd {
  margin: 0 0 var(--space-3);
  color: var(--color-text-muted);
}

pre,
code,
kbd,
samp {
  font-family: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

code,
kbd {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sharp);
  background: rgb(10 13 28 / 75%);
  padding: 0.08em 0.3em;
  font-size: 0.9em;
}

pre {
  margin: 0 0 var(--space-5);
  overflow-x: auto;
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
  color: var(--color-text);
}

pre code {
  border: 0;
  background: transparent;
  padding: 0;
}

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

strong {
  color: var(--color-ivory-glow);
  font-weight: 700;
}

mark {
  background: rgb(216 183 106 / 24%);
  color: var(--color-ivory-glow);
}

details {
  margin: 0 0 var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--surface-glass);
}

summary {
  padding: var(--space-4);
  color: var(--color-ivory-glow);
  font-weight: 600;
}

details > :not(summary) {
  margin-inline: var(--space-4);
}

details > :last-child {
  margin-block-end: var(--space-4);
}

::selection {
  background: rgb(78 217 232 / 32%);
  color: var(--color-ivory-glow);
}

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

.section {
  padding-block: clamp(var(--space-8), 8vw, var(--space-10));
}

.surface-glass {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
}

.surface-obsidian {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--surface-strong);
  box-shadow: var(--shadow-soft);
}

.card {
  min-width: 0;
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
}

.card > :last-child,
.surface-glass > :last-child,
.surface-obsidian > :last-child,
.compact-content > :last-child {
  margin-block-end: 0;
}

.eyebrow,
.technical-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: var(--line-xs);
  text-transform: uppercase;
}

.technical-label {
  width: fit-content;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sharp);
  background: var(--color-cosmic-indigo);
  padding: 0.375rem 0.5rem;
}

.technical-label::before {
  width: 0.375rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--color-star-gold);
  content: "";
}

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

.button {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

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

.button-primary {
  background: var(--color-comet-cyan);
  color: var(--color-polished-obsidian);
}

.button-primary:hover {
  background: #77e6f0;
  color: var(--color-polished-obsidian);
  box-shadow: var(--shadow-glow-cyan);
}

.button-secondary {
  border-color: var(--color-border-strong);
  background: var(--color-polished-obsidian);
  color: var(--color-ivory-glow);
}

.button-secondary:hover {
  border-color: var(--color-nebula-magenta);
  color: var(--color-ivory-glow);
}

.button-magenta {
  background: var(--color-nebula-magenta);
  color: var(--color-ivory-glow);
}

.button-magenta:hover {
  background: #ca4b95;
  color: var(--color-ivory-glow);
}

.content-list {
  margin: 0 0 var(--space-5);
  padding: 0;
  list-style: none;
}

.content-list > .scroll-x {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  -webkit-overflow-scrolling: touch;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: var(--space-3);
  left: var(--space-3);
  transform: translateY(-200%);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background: var(--color-comet-cyan);
  color: var(--color-polished-obsidian);
  font-weight: 700;
  text-decoration: none;
}

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

@media (max-width: 767px) {
  :root {
    --container-width: var(--container-width-mobile);
  }

  body {
    font-size: 1rem;
  }

  h1 {
    font-size: clamp(2.625rem, 12vw, 3.5rem);
  }

  h2 {
    font-size: clamp(2rem, 9vw, 2.5rem);
  }

  h3 {
    font-size: clamp(1.5rem, 7vw, 1.75rem);
  }

  .section {
    padding-block: clamp(var(--space-8), 15vw, 5rem);
  }

  .card {
    padding: var(--space-4);
  }

  blockquote {
    padding-inline-start: var(--space-4);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}