:root {
  color-scheme: light;
  --bg-primary: #f5f6f7;
  --bg-primary-alt: #eceef1;
  --bg-panel: #ffffff;
  --bg-panel-alt: #f0f3f7;
  --bg-elevated: #ffffff;
  --bg-grid: rgba(11, 142, 176, 0.08);
  --bg-accent-55: rgba(14, 210, 247, 0.3);
  --bg-sub-accent-55: rgba(244, 86, 157, 0.28);
  --bg-tag: rgba(14, 210, 247, 0.12);
  --text-normal: #20242b;
  --text-muted: #5d6776;
  --text-faint: #7c90b5;
  --text-accent: #0b8eb0;
  --text-sub-accent: #d74c93;
  --text-title-h1: #20242b;
  --text-title-h2: #2e3c4f;
  --text-title-h3: #2e3c4f;
  --line: rgba(32, 36, 43, 0.15);
  --line-strong: rgba(11, 142, 176, 0.48);
  --line-accent: rgba(14, 210, 247, 0.28);
  --shadow: 8px 8px 0 rgba(32, 36, 43, 0.08);
  --shadow-strong: 10px 10px 0 rgba(11, 142, 176, 0.12);
  --code-inline: #0b8eb0;
  --code-bg: rgba(14, 210, 247, 0.08);
  --code-block-bg: #edf2f8;
  --code-block-text: #1d2734;
  --button-text: #061017;
  --selection: rgba(244, 86, 157, 0.18);
  --hero-copy: #465261;
  --theme-ring: rgba(14, 210, 247, 0.22);
  --blockquote-border: #d6555f;
  --table-border-color: rgba(11, 142, 176, 0.18);
  --font-sans: "Rubik", "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-mono: "OperatorMonoSSmLig-Book", "JetBrains Mono", "SFMono-Regular", "Menlo", monospace;
  --radius: 6px;
  --transition: 160ms ease;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg-primary: #100e17;
    --bg-primary-alt: #0d0b12;
    --bg-panel: #14111d;
    --bg-panel-alt: #191621;
    --bg-elevated: #100e17;
    --bg-grid: rgba(14, 210, 247, 0.07);
    --bg-accent-55: rgba(14, 210, 247, 0.55);
    --bg-sub-accent-55: rgba(244, 86, 157, 0.5);
    --bg-tag: rgba(14, 210, 247, 0.12);
    --text-normal: #d0d4db;
    --text-muted: #93a0b8;
    --text-faint: #7aa2f7;
    --text-accent: #0fb6d6;
    --text-sub-accent: #f4569d;
    --text-title-h1: #0fb6d6;
    --text-title-h2: #d9e4ee;
    --text-title-h3: #d9e4ee;
    --line: rgba(255, 255, 255, 0.09);
    --line-strong: rgba(14, 210, 247, 0.46);
    --line-accent: rgba(14, 210, 247, 0.22);
    --shadow: 8px 8px 0 rgba(0, 0, 0, 0.3);
    --shadow-strong: 10px 10px 0 rgba(14, 210, 247, 0.12);
    --code-inline: rgba(14, 210, 247, 0.95);
    --code-bg: rgba(14, 210, 247, 0.12);
    --code-block-bg: #191621;
    --code-block-text: #dbe6ef;
    --button-text: #071017;
    --selection: rgba(244, 86, 157, 0.24);
    --hero-copy: #a0aec2;
    --theme-ring: rgba(14, 210, 247, 0.28);
    --blockquote-border: #4aa8fb;
    --table-border-color: rgba(14, 210, 247, 0.15);
  }
}

:root[data-theme="light"] {
  color-scheme: light;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg-primary: #100e17;
  --bg-primary-alt: #0d0b12;
  --bg-panel: #14111d;
  --bg-panel-alt: #191621;
  --bg-elevated: #100e17;
  --bg-grid: rgba(14, 210, 247, 0.07);
  --bg-accent-55: rgba(14, 210, 247, 0.55);
  --bg-sub-accent-55: rgba(244, 86, 157, 0.5);
  --bg-tag: rgba(14, 210, 247, 0.12);
  --text-normal: #d0d4db;
  --text-muted: #93a0b8;
  --text-faint: #7aa2f7;
  --text-accent: #0fb6d6;
  --text-sub-accent: #f4569d;
  --text-title-h1: #0fb6d6;
  --text-title-h2: #d9e4ee;
  --text-title-h3: #d9e4ee;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(14, 210, 247, 0.46);
  --line-accent: rgba(14, 210, 247, 0.22);
  --shadow: 8px 8px 0 rgba(0, 0, 0, 0.3);
  --shadow-strong: 10px 10px 0 rgba(14, 210, 247, 0.12);
  --code-inline: rgba(14, 210, 247, 0.95);
  --code-bg: rgba(14, 210, 247, 0.12);
  --code-block-bg: #191621;
  --code-block-text: #dbe6ef;
  --button-text: #071017;
  --selection: rgba(244, 86, 157, 0.24);
  --hero-copy: #a0aec2;
  --theme-ring: rgba(14, 210, 247, 0.28);
  --blockquote-border: #4aa8fb;
  --table-border-color: rgba(14, 210, 247, 0.15);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

::selection {
  background: var(--selection);
}

body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  color: var(--text-normal);
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.7;
  background:
    linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-primary-alt) 100%);
  transition:
    background-color var(--transition),
    color var(--transition);
}

a {
  color: inherit;
}

.shell {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.background-grid,
.background-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.background-grid {
  background-image:
    linear-gradient(to right, transparent 0, transparent calc(100% - 1px), var(--bg-grid) calc(100% - 1px)),
    linear-gradient(to bottom, transparent 0, transparent calc(100% - 1px), var(--bg-grid) calc(100% - 1px));
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 92%);
}

.background-glow-a,
.background-glow-b {
  inset: auto;
  opacity: 0.9;
}

.background-glow-a {
  width: 12rem;
  height: 12rem;
  top: 0;
  right: 8%;
  background: linear-gradient(135deg, transparent 0 32%, rgba(14, 210, 247, 0.14) 32% 100%);
}

.background-glow-b {
  width: 10rem;
  height: 10rem;
  bottom: 7%;
  left: 6%;
  background: linear-gradient(135deg, transparent 0 38%, rgba(244, 86, 157, 0.12) 38% 100%);
}

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

.site-header {
  display: grid;
  gap: 0.9rem;
  padding: 1.2rem 0 1rem;
  border-bottom: 2px solid var(--line);
}

.site-footer {
  padding: 1.35rem 0 3rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  border-top: 2px solid var(--line);
}

.site-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
}

.site-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.locale-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.brand {
  color: var(--text-accent);
  font-family: var(--font-sans);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
}

.site-nav {
  display: block;
}

.site-nav-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.site-nav a,
.theme-toggle,
.locale-link {
  appearance: none;
  border: 2px solid var(--line);
  background: var(--bg-panel);
  color: var(--text-muted);
  border-radius: var(--radius);
  padding: 0.55rem 0.8rem;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition:
    color var(--transition),
    border-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition),
    background-color var(--transition);
}

.site-nav a:hover,
.theme-toggle:hover,
.locale-link:hover {
  color: var(--text-accent);
  border-color: var(--line-strong);
  box-shadow: 4px 4px 0 var(--line-accent);
  transform: translate(-1px, -1px);
}

.site-nav a[aria-current="page"],
.locale-link[aria-current="true"] {
  color: var(--text-accent);
  border-color: var(--line-strong);
  box-shadow: inset 0 0 0 1px var(--theme-ring);
}

.locale-link {
  min-width: 3rem;
  justify-content: center;
}

.theme-toggle {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--text-accent);
  outline-offset: 2px;
}

.theme-toggle-dot {
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--text-accent), var(--text-sub-accent));
  box-shadow: 0 0 0 3px var(--theme-ring);
}

.main-content {
  padding: 1rem 0 4rem;
}

.hero,
.content-card,
.card {
  position: relative;
  background: var(--bg-panel);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.hero {
  display: grid;
  gap: 0.6rem;
  padding: 1.4rem;
  margin-bottom: 1.15rem;
  box-shadow: var(--shadow-strong);
}

.hero::before {
  content: attr(data-context-label);
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 0.32rem 0.5rem;
  border: 2px solid var(--line-strong);
  color: var(--text-accent);
  background: var(--bg-panel-alt);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
}

.hero h1,
.prose h1,
.prose h2,
.prose h3,
.card h2 {
  font-family: var(--font-sans);
  line-height: 1.12;
}

.hero h1 {
  margin: 0;
  max-width: 12ch;
  color: var(--text-title-h1);
  font-size: clamp(2.5rem, 6vw, 5.1rem);
  font-weight: 700;
}

.hero-copy {
  margin: 0;
  max-width: 56rem;
  color: var(--hero-copy);
  font-size: 1.02rem;
}

.eyebrow {
  color: var(--text-sub-accent);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-links,
.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.7rem;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  padding: 0.7rem 0.95rem;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition:
    color var(--transition),
    border-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition),
    background-color var(--transition);
}

.button:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--line-accent);
}

.button-primary {
  color: var(--button-text);
  border-color: transparent;
  background:
    linear-gradient(135deg, var(--text-accent), var(--text-sub-accent)) padding-box,
    linear-gradient(var(--bg-panel), var(--bg-panel)) border-box;
  background-clip: padding-box, border-box;
}

.button-secondary {
  background: var(--bg-panel-alt);
  color: var(--text-normal);
}

.content-card {
  padding: 1.45rem;
  box-shadow: var(--shadow);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.95rem;
  margin-top: 1rem;
}

.card {
  display: grid;
  gap: 0.45rem;
  padding: 1rem;
  box-shadow: var(--shadow);
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.card:hover {
  transform: translate(-1px, -1px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-strong);
}

.card h2 {
  margin: 0;
  color: var(--text-title-h2);
  font-size: 1.28rem;
  font-weight: 700;
}

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

.prose > :first-child {
  margin-top: 0;
}

.prose p,
.prose ul,
.prose ol,
.prose blockquote,
.prose pre,
.prose table {
  margin: 0 0 1rem;
}

.prose h1 {
  margin: 0 0 1rem;
  color: var(--text-title-h1);
  font-size: clamp(1.95rem, 4vw, 2.5rem);
  font-weight: 700;
}

.prose h2,
.prose h3,
.prose h4,
.prose h5,
.prose h6 {
  margin: 2.25rem 0 1rem;
  padding-bottom: 0.65rem;
  color: var(--text-title-h2);
  font-weight: 700;
  border-bottom: 2px solid transparent;
  border-image-slice: 1;
  border-image-source: linear-gradient(
    to right,
    var(--text-sub-accent),
    var(--line-accent),
    transparent 72%
  );
}

.prose h2 {
  font-size: 1.5rem;
}

.prose h3 {
  font-size: 1.2rem;
}

.prose h4,
.prose h5,
.prose h6 {
  font-size: 1rem;
}

.prose strong {
  color: #7aa2f7;
  background: linear-gradient(62deg, #87c2fd 0%, #dcb9fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.prose em {
  color: #bb9af7;
  font-family: var(--font-mono);
  font-style: italic;
}

.prose a {
  color: var(--text-normal);
  text-decoration: none;
  background-repeat: repeat-x;
  background-position: 0 100%;
  background-size: 4px 4px;
  transition:
    background-size var(--transition),
    color var(--transition),
    -webkit-text-fill-color var(--transition);
}

.prose a[href$=".md"] {
  background-image: linear-gradient(to bottom, var(--bg-accent-55) 0%, var(--bg-accent-55) 100%);
}

.prose a:not([href$=".md"]) {
  background-image: linear-gradient(
    to bottom,
    var(--bg-sub-accent-55) 0%,
    var(--bg-sub-accent-55) 100%
  );
}

.prose a:hover {
  color: #ffffff;
  -webkit-text-fill-color: #ffffff;
  background-size: 4px 44px;
}

.prose ul,
.prose ol {
  padding-left: 1.2rem;
}

.prose li::marker {
  color: var(--text-accent);
}

.prose li + li {
  margin-top: 0.25rem;
}

.prose hr {
  position: relative;
  margin: 3rem 0;
  border: none;
  height: 0;
  border-bottom: 2px solid transparent;
  border-image-slice: 1;
  border-image-source: linear-gradient(to right, transparent, var(--text-accent), transparent);
}

.prose hr::after {
  content: "§";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -55%) rotate(60deg);
  padding: 0.2rem 0.4rem;
  color: var(--text-sub-accent);
  background: var(--bg-elevated);
}

.prose blockquote {
  margin-left: 0;
  padding: 1rem 1rem 1rem 1.2rem;
  border-left: 4px solid var(--blockquote-border);
  background: linear-gradient(90deg, rgba(14, 210, 247, 0.09), transparent 72%);
  color: var(--text-muted);
}

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

.prose code {
  color: var(--code-inline);
  background: var(--code-bg);
  border-radius: 4px;
  padding: 0.15rem 0.38rem;
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.prose pre {
  overflow-x: auto;
  padding: 1rem 1.05rem;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--code-block-bg);
  color: var(--code-block-text);
}

.prose pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.prose table {
  display: block;
  max-width: 100%;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  border-spacing: 0;
  border: 2px solid var(--table-border-color);
  -webkit-overflow-scrolling: touch;
}

.prose th,
.prose td {
  padding: 0.75rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--table-border-color);
}

.prose th {
  color: var(--text-accent);
  background: rgba(14, 210, 247, 0.06);
}

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

.site-footer a {
  color: inherit;
}

::-webkit-scrollbar {
  width: 0.58rem;
  height: 0.58rem;
}

::-webkit-scrollbar-thumb {
  background-color: var(--line-strong);
  border-radius: 999px;
}

::-webkit-scrollbar-track,
::-webkit-scrollbar-track-piece {
  background: var(--bg-primary-alt);
}

@media (max-width: 860px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-topbar,
  .site-controls {
    width: 100%;
  }

  .site-topbar {
    justify-content: space-between;
  }

  .hero h1 {
    max-width: none;
  }
}

@media (max-width: 760px) {
  body {
    font-size: 17px;
  }

  .shell {
    width: min(100% - 1rem, 1100px);
  }

  .site-header {
    gap: 0.75rem;
    padding: 0.95rem 0 0.95rem;
  }

  .site-topbar {
    align-items: center;
  }

  .brand {
    max-width: 12ch;
    font-size: 0.95rem;
    line-height: 1.2;
  }

  .site-controls {
    gap: 0.5rem;
  }

  .locale-switch {
    gap: 0.3rem;
  }

  .theme-toggle {
    min-height: 2.85rem;
    padding: 0.72rem 0.82rem;
  }

  .locale-link {
    min-height: 2.85rem;
    min-width: 2.85rem;
    padding: 0.72rem 0.72rem;
  }

  .theme-toggle {
    min-width: 2.85rem;
    justify-content: center;
  }

  .theme-toggle [data-theme-label] {
    display: none;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    padding-top: 0.1rem;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav-inner {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.55rem;
    width: max-content;
    min-width: 100%;
    padding-bottom: 0.15rem;
  }

  .site-nav a {
    flex: 0 0 auto;
    min-height: 2.9rem;
    padding: 0.78rem 0.9rem;
    white-space: nowrap;
  }

  .main-content {
    padding: 0.8rem 0 3rem;
  }

  .hero,
  .content-card,
  .card {
    box-shadow: none;
  }

  .hero {
    gap: 0.72rem;
    padding: 1.1rem;
    margin-bottom: 1rem;
  }

  .hero::before {
    font-size: 0.7rem;
  }

  .hero h1 {
    font-size: clamp(2.15rem, 10vw, 3.15rem);
    line-height: 1.02;
  }

  .hero-copy {
    font-size: 0.98rem;
  }

  .hero-links,
  .card-links {
    width: 100%;
    flex-direction: column;
  }

  .button {
    width: 100%;
    min-height: 3rem;
  }

  .content-card {
    padding: 1.05rem;
  }

  .grid {
    gap: 0.8rem;
  }

  .card {
    padding: 0.95rem;
  }

  .prose {
    font-size: 0.98rem;
  }

  .prose h1 {
    font-size: clamp(1.7rem, 7vw, 2.2rem);
  }

  .prose h2 {
    font-size: 1.32rem;
  }

  .prose h3 {
    font-size: 1.12rem;
  }

  .prose pre {
    padding: 0.85rem 0.9rem;
  }

  .site-footer {
    gap: 0.45rem;
    padding: 1.1rem 0 2.5rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 16.5px;
  }

  .background-grid {
    background-size: 24px 24px;
  }

  .brand {
    max-width: 10ch;
  }

  .hero {
    padding: 0.95rem;
  }

  .content-card,
  .card {
    padding-left: 0.9rem;
    padding-right: 0.9rem;
  }

  .prose blockquote {
    padding: 0.9rem 0.85rem 0.9rem 1rem;
  }

  .prose th,
  .prose td {
    padding: 0.65rem 0.7rem;
  }
}