:root {
  --bg-0: #050505;
  --bg-1: #0b0b0b;
  --bg-2: #151515;
  --line: rgba(214, 214, 214, 0.14);
  --line-strong: rgba(235, 235, 235, 0.22);
  --text: #f2f2f2;
  --text-dim: #c6c6c6;
  --text-mute: #858585;
  --accent: #f7f7f7;
  --accent-2: #d8d8d8;
  --accent-3: #b8b8b8;
  --accent-warm: #969696;
  --font-sans: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", ui-monospace, Menlo, monospace;
  --shadow-window:
    0 1px 0 rgba(255, 255, 255, 0.06) inset,
    0 30px 80px -20px rgba(0, 0, 0, 0.7), 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font: 400 16px/1.65 var(--font-sans);
  filter: grayscale(1);
  background:
    radial-gradient(
      1000px 520px at 8% -10%,
      rgba(226, 226, 226, 0.14),
      transparent 60%
    ),
    radial-gradient(
      860px 440px at 112% 18%,
      rgba(190, 190, 190, 0.12),
      transparent 60%
    ),
    linear-gradient(180deg, #050505 0%, #101010 56%, #050505 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

p,
li {
  color: var(--text-dim);
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  background: rgba(7, 7, 7, 0.76);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 700;
}

.brand img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.links {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.links a {
  color: var(--text-dim);
  transition: color 0.2s var(--ease);
}

.links a:hover,
.text-link:hover {
  color: #fff;
}

main {
  padding: 72px 0 96px;
}

.hero,
.article-shell {
  max-width: 860px;
}

.hero {
  margin-bottom: 40px;
}

.eyebrow,
.eyebrow-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(220, 220, 220, 0.08);
  color: var(--text-dim);
  font: 500 12px/1 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before,
.eyebrow-inline::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 12px rgba(220, 220, 220, 0.9);
}

h1,
h2,
h3 {
  margin: 0;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

h1 {
  margin-top: 20px;
  font-size: clamp(2.8rem, 7vw, 4.8rem);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 12px;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.6rem);
}

.lead {
  margin-top: 20px;
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  max-width: 64ch;
}

.notice,
.card,
.panel,
.info-card,
.prompt-box {
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background: linear-gradient(
    180deg,
    rgba(28, 28, 28, 0.72),
    rgba(18, 18, 18, 0.62)
  );
  box-shadow: var(--shadow-window);
}

.notice {
  margin-top: 24px;
  padding: 18px 20px;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 12px;
  font-weight: 600;
  transition:
    transform 0.25s var(--ease),
    box-shadow 0.25s var(--ease),
    background 0.25s var(--ease),
    border-color 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #080808;
  background: linear-gradient(180deg, #ffffff 0%, #bdbdbd 100%);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.32),
    0 10px 40px -10px rgba(215, 215, 215, 0.3);
}

.btn-ghost {
  color: var(--text);
  border: 1px solid var(--line-strong);
  background: rgba(220, 220, 220, 0.05);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 28px;
}

.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.pill,
.meta,
.label,
.breadcrumbs,
.list-label {
  font: 500 11px/1.2 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(190, 190, 190, 0.28);
  color: var(--accent-3);
  background: rgba(190, 190, 190, 0.1);
}

.meta {
  color: var(--text-mute);
}

.text-link {
  color: var(--accent);
  font-weight: 600;
}

.article-shell {
  display: grid;
  gap: 24px;
}

.breadcrumbs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--text-mute);
}

.breadcrumbs a:hover {
  color: #fff;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.info-card,
.panel,
.prompt-box {
  padding: 22px;
}

.label,
.list-label {
  display: block;
  margin-bottom: 10px;
  color: var(--text-mute);
}

strong,
b {
  color: #fff;
}

ol,
ul {
  margin: 0;
  padding-left: 20px;
}

li + li {
  margin-top: 10px;
}

.prompt-box {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.04),
    rgba(220, 220, 220, 0.03)
  );
}

.prompt-box p,
.prompt-box li,
.panel p,
.info-card p,
.notice p,
.card p {
  margin: 0;
}

.prompt-copy {
  white-space: pre-wrap;
}

.footer {
  padding: 0 0 48px;
  color: var(--text-mute);
}

.footer .container {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer a {
  color: var(--accent);
}

.footer a:hover {
  color: #fff;
}

.article-wrap {
  width: min(860px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 24px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0 8px;
}

.topnav {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.topnav a {
  color: var(--text-mute);
  transition: color 0.2s ease;
}

.topnav a:hover,
.body-link:hover {
  color: #fff;
}

.body-link {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(190, 190, 190, 0.28);
  background: rgba(190, 190, 190, 0.1);
  color: var(--accent-3);
  font: 500 11px/1.2 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.meta-item {
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.section-block h2 {
  margin-bottom: 14px;
}

.callout {
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(7, 7, 7, 0.4);
}

.callout p {
  margin: 0;
}

.outline,
.notes {
  margin: 0;
  padding-left: 20px;
}

.outline li + li,
.notes li + li {
  margin-top: 10px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-mute);
  font-size: 0.95rem;
}

.breadcrumb span {
  color: var(--text-mute);
}

.footer.article-wrap {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .topnav {
    gap: 14px;
  }

  main {
    padding-top: 48px;
  }

  .card,
  .panel,
  .info-card,
  .prompt-box,
  .notice {
    padding: 20px;
  }
}