@import url("https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");

:root {
  color-scheme: light;
  --font-sans: "Outfit", Arial, sans-serif;
  --blue-200: oklch(86.8% 0.074 257.7);
  --blue-500: oklch(62.8% 0.258 261.9);
  --blue-700: oklch(49.8% 0.305 264.7);
  --blue-800: oklch(44.9% 0.273 264.9);
  --blue-900: oklch(40.4% 0.244 264.9);
  --neutral-50: oklch(98.4% 0.003 247.9);
  --neutral-100: oklch(96.7% 0.006 248.0);
  --neutral-200: oklch(93.0% 0.010 252.0);
  --neutral-300: oklch(87.5% 0.015 256.0);
  --neutral-400: oklch(70.4% 0.030 260.0);
  --neutral-600: oklch(43.0% 0.043 262.0);
  --neutral-700: oklch(37.7% 0.044 261.3);
  --neutral-800: oklch(26.0% 0.038 264.0);
  --neutral-900: oklch(13.0% 0.037 264.4);
  --page-bg: var(--neutral-50);
  --card-bg: oklch(100% 0 0);
  --text-body: var(--neutral-700);
  --text-heading: var(--neutral-900);
  --text-muted: var(--neutral-600);
  --accent: var(--blue-700);
  --accent-strong: var(--blue-800);
  --accent-soft: oklch(49.8% 0.305 264.7 / 0.10);
  --border-color: var(--neutral-200);
  --border-strong: var(--neutral-300);
  --shadow-card: 0 16px 44px oklch(13.0% 0.037 264.4 / 0.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page-bg: var(--neutral-900);
    --card-bg: var(--neutral-800);
    --text-body: var(--neutral-200);
    --text-heading: var(--neutral-50);
    --text-muted: var(--neutral-400);
    --accent: var(--blue-200);
    --accent-strong: var(--blue-200);
    --accent-soft: oklch(62.8% 0.258 261.9 / 0.16);
    --border-color: oklch(98.4% 0.003 247.9 / 0.12);
    --border-strong: oklch(98.4% 0.003 247.9 / 0.18);
    --shadow-card: 0 18px 48px oklch(0% 0 0 / 0.32);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--page-bg);
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--page-bg);
  color: var(--text-body);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

main {
  width: min(100% - 32px, 900px);
  min-height: calc(100vh - 40px);
  margin: 20px auto;
  padding: 32px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  box-shadow: var(--shadow-card);
}

h1,
h2,
h3 {
  color: var(--text-heading);
  line-height: 1.2;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  margin: 10px 0 18px;
  font-size: clamp(2rem, 5vw, 3.1rem);
  font-weight: 700;
}

h2 {
  margin: 34px 0 12px;
  font-size: clamp(1.25rem, 3vw, 1.65rem);
  font-weight: 700;
}

h3 {
  margin: 26px 0 10px;
  font-size: 1.1rem;
  font-weight: 600;
}

p,
li {
  line-height: 1.7;
}

p {
  margin: 0 0 18px;
}

ul,
ol {
  padding-left: 1.35rem;
}

li + li {
  margin-top: 8px;
}

a {
  color: var(--accent);
  font-weight: 600;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-strong);
}

a:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

article {
  max-width: 760px;
}

code,
kbd,
samp {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875em;
  font-variant-numeric: tabular-nums;
}

pre {
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
  padding: 1rem 1.25rem;
  background: color-mix(in oklch, var(--card-bg) 85%, var(--neutral-900) 15%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  line-height: 1.6;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875em;
  font-variant-numeric: tabular-nums;
  white-space: pre;
  word-wrap: normal;
}

.meta,
.author-byline {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.author-byline {
  margin: 6px 0 24px;
}

.back-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  margin: -4px 0 14px;
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
}

.back-link:hover {
  text-decoration: underline;
}

.article-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.article-list li,
.card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: color-mix(in oklch, var(--card-bg), var(--accent-soft) 35%);
}

.article-list li {
  margin: 0;
  padding: 18px 20px;
}

.article-list h2,
.card h2 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.article-list h2 a,
.card h2 a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  text-decoration: none;
}

.article-list h2 a:hover,
.card h2 a:hover {
  text-decoration: underline;
}

.article-list p,
.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.card {
  padding: 18px;
}

.callout,
.persistent-callout,
.contact-box {
  margin: 24px 0;
  padding: 16px 18px;
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--accent-soft);
  color: var(--text-body);
}

.persistent-callout {
  border-left-color: oklch(60.4% 0.198 158.4);
  background: oklch(60.4% 0.198 158.4 / 0.08);
}

.callout-tip {
  border-left-color: oklch(60.4% 0.198 158.4);
  background: oklch(60.4% 0.198 158.4 / 0.08);
}

.callout-warn {
  border-left-color: oklch(68.6% 0.179 80.9);
  background: oklch(68.6% 0.179 80.9 / 0.08);
}

.faq-section {
  margin-top: 34px;
  padding-top: 8px;
  border-top: 1px solid var(--border-color);
}

.wrap {
  width: min(100% - 32px, 620px);
  margin: 0 auto;
  padding: 64px 24px;
  text-align: center;
}

.wrap h1 {
  margin-bottom: 10px;
  color: var(--accent);
  font-size: clamp(4rem, 18vw, 7rem);
}

.wrap p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.wrap a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  margin-top: 10px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: oklch(98.0% 0.010 250.0);
  text-decoration: none;
}

.wrap a:hover {
  background: var(--accent-strong);
  color: oklch(98.0% 0.010 250.0);
}

body:has(.wrap) {
  display: flex;
  align-items: center;
  justify-content: center;
}

body:has(.wrap) main {
  all: unset;
}

@media (max-width: 760px) {
  body {
    background: var(--page-bg);
  }

  main {
    width: 100%;
    min-height: 100vh;
    margin: 0;
    padding: 24px 18px 40px;
    border-width: 0;
    border-radius: 0;
  }

  h1 {
    font-size: 2rem;
  }

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

  .article-list li,
  .card {
    padding: 16px;
  }
}