:root {
  --bg: #f3efe7;
  --bg-deep: #e6ddd0;
  --surface: rgba(255, 252, 246, 0.76);
  --surface-strong: rgba(255, 250, 242, 0.92);
  --surface-ink: #1f2937;
  --line: rgba(60, 47, 34, 0.14);
  --line-strong: rgba(60, 47, 34, 0.24);
  --text: #241d17;
  --text-soft: #5f5549;
  --text-faint: #8a7f73;
  --accent: #9f2f24;
  --accent-strong: #7b2219;
  --accent-soft: rgba(159, 47, 36, 0.1);
  --accent-soft-strong: rgba(159, 47, 36, 0.18);
  --emerald: #1d6b57;
  --gold: #b57919;
  --shadow-soft: 0 20px 60px rgba(69, 48, 28, 0.08);
  --shadow-card: 0 24px 70px rgba(69, 48, 28, 0.12);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --sidebar-w: 290px;
  --content-w: 1120px;
  --measure: 760px;
  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans: "Manrope", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --transition: 180ms cubic-bezier(.2, .7, .2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 28px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font: 500 16px/1.75 var(--font-sans);
  background:
    radial-gradient(circle at top left, rgba(159, 47, 36, 0.14), transparent 28%),
    radial-gradient(circle at top right, rgba(181, 121, 25, 0.14), transparent 24%),
    linear-gradient(180deg, #f8f3ea 0%, var(--bg) 42%, #efe7dc 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(94, 73, 49, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94, 73, 49, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent 82%);
  z-index: -1;
}

a {
  color: var(--accent);
  text-decoration: none;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  transition:
    color var(--transition),
    background-color var(--transition),
    border-color var(--transition),
    transform var(--transition);
}

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

img {
  max-width: 100%;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  width: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #d5692e, var(--gold));
  box-shadow: 0 0 18px rgba(159, 47, 36, 0.28);
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  padding: 26px 18px 22px;
  background: rgba(35, 30, 27, 0.92);
  color: #f5efe7;
  border-right: 1px solid rgba(255, 245, 232, 0.08);
  backdrop-filter: blur(20px);
  box-shadow: 18px 0 50px rgba(28, 21, 17, 0.1);
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 6px 18px;
  border-bottom: 1px solid rgba(255, 245, 232, 0.1);
}

.logo-lockup {
  display: grid;
  gap: 4px;
}

.logo {
  color: #fff8f0;
  font: 700 1.6rem/1 var(--font-serif);
  letter-spacing: -0.04em;
}

.logo:hover {
  color: #fff8f0;
}

.logo-kicker {
  color: rgba(255, 245, 232, 0.58);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.sidebar-close,
.hamburger {
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.sidebar-close {
  display: none;
  font-size: 1.6rem;
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 18px 2px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 245, 232, 0.15) transparent;
}

.nav-group {
  margin-bottom: 14px;
}

.nav-group-label {
  margin: 0 0 7px;
  padding: 0 12px;
  color: rgba(255, 245, 232, 0.45);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav-link {
  display: block;
  padding: 9px 12px;
  border-radius: 12px;
  color: rgba(255, 245, 232, 0.93);
  font-size: 0.92rem;
}

.nav-link:hover {
  color: #fff8f0;
  background: rgba(255, 245, 232, 0.08);
}

.nav-link.active {
  color: #fff8f0;
  background: linear-gradient(90deg, rgba(159, 47, 36, 0.34), rgba(159, 47, 36, 0.08));
  box-shadow: inset 0 0 0 1px rgba(255, 245, 232, 0.08);
}

.sidebar-meta {
  display: grid;
  gap: 14px;
  padding: 14px 6px 0;
  border-top: 1px solid rgba(255, 245, 232, 0.08);
}

.sidebar-meta-label {
  margin: 0 0 4px;
  color: rgba(255, 245, 232, 0.45);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.sidebar-authors {
  color: #fff8f0;
  font-size: 0.92rem;
  line-height: 1.5;
}

.sidebar-authors strong {
  display: block;
  margin-bottom: 3px;
}

.sidebar-repo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid rgba(255, 245, 232, 0.16);
  border-radius: 999px;
  color: #fff8f0;
  font-size: 0.88rem;
  font-weight: 700;
  background: rgba(255, 245, 232, 0.04);
}

.sidebar-repo:hover {
  color: #fff8f0;
  background: rgba(255, 245, 232, 0.1);
}

.main {
  margin-left: var(--sidebar-w);
}

.main-shell {
  width: min(var(--content-w), calc(100vw - var(--sidebar-w) - 56px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 90;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: rgba(255, 249, 241, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.mobile-title {
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 42px;
  border: 1px solid rgba(60, 47, 34, 0.12);
  border-radius: 36px;
  background:
    radial-gradient(circle at top right, rgba(181, 121, 25, 0.17), transparent 26%),
    radial-gradient(circle at left center, rgba(159, 47, 36, 0.14), transparent 22%),
    linear-gradient(160deg, rgba(255, 252, 247, 0.96), rgba(247, 239, 227, 0.92));
  box-shadow: var(--shadow-card);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -20% -42% auto;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(159, 47, 36, 0.12), transparent 70%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.9fr);
  gap: 28px;
}

.hero-copy {
  max-width: 720px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 252, 247, 0.82);
  border: 1px solid rgba(159, 47, 36, 0.18);
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-label::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(159, 47, 36, 0.08);
}

.hero h1 {
  margin: 0 0 18px;
  color: #1d1712;
  font: 700 clamp(3rem, 5vw, 4.8rem) / 0.98 var(--font-serif);
  letter-spacing: -0.05em;
  text-wrap: balance;
}

.hero-lede {
  margin: 0 0 26px;
  max-width: 62ch;
  color: var(--text-soft);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}

.hero-kicker {
  margin: 0 0 22px;
  max-width: 60ch;
  color: var(--text);
  font-size: 1rem;
}

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

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.github-icon {
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
}

.button-link.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #c0492a);
  box-shadow: 0 16px 40px rgba(159, 47, 36, 0.22);
}

.button-link.primary:hover {
  color: #fff;
  transform: translateY(-1px);
}

.button-link.secondary {
  color: var(--text);
  background: rgba(255, 252, 247, 0.78);
  border: 1px solid rgba(60, 47, 34, 0.12);
}

.button-link.secondary:hover {
  color: var(--text);
  border-color: rgba(159, 47, 36, 0.2);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.fact-card {
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(60, 47, 34, 0.1);
  background: rgba(255, 252, 247, 0.7);
  backdrop-filter: blur(12px);
}

.fact-value {
  display: block;
  margin-bottom: 6px;
  color: #1d1712;
  font: 700 1.5rem/1 var(--font-serif);
}

.fact-label {
  color: var(--text-soft);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-rail {
  display: grid;
  gap: 16px;
  align-content: start;
}

.meta-card,
.hero-loop,
.values-panel {
  border: 1px solid rgba(60, 47, 34, 0.1);
  border-radius: 24px;
  background: rgba(255, 252, 247, 0.74);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
}

.meta-card {
  padding: 24px;
}

.meta-kicker,
.hero-loop-label,
.panel-kicker {
  margin: 0 0 10px;
  color: var(--text-faint);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.meta-title {
  margin: 0 0 16px;
  color: #1d1712;
  font: 700 1.6rem/1.05 var(--font-serif);
  letter-spacing: -0.03em;
}

.author-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.author-item {
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(159, 47, 36, 0.06);
  border: 1px solid rgba(159, 47, 36, 0.08);
}

.author-item strong {
  display: block;
  margin-bottom: 3px;
  color: #1d1712;
  font-size: 0.98rem;
}

.author-item span {
  color: var(--text-soft);
  font-size: 0.9rem;
}

.meta-copy {
  margin: 16px 0 0;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.hero-loop {
  padding: 22px 24px;
}

.loop-steps {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.loop-step {
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--surface-ink);
  font-size: 0.8rem;
  font-weight: 800;
  background: rgba(36, 29, 23, 0.06);
  border: 1px solid rgba(60, 47, 34, 0.1);
}

.loop-step.accent {
  color: var(--accent);
  background: rgba(159, 47, 36, 0.08);
  border-color: rgba(159, 47, 36, 0.16);
}

.loop-arrow {
  color: var(--text-faint);
  font-size: 0.85rem;
}

.values-panel {
  margin-top: 18px;
  padding: 24px;
}

.values-grid {
  display: grid;
  gap: 12px;
}

.value-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  border-radius: 16px;
  background: rgba(255, 252, 247, 0.7);
  border: 1px solid rgba(60, 47, 34, 0.08);
}

.value-left,
.value-right {
  font-size: 0.95rem;
}

.value-left {
  color: #1d1712;
  font-weight: 800;
}

.value-right {
  color: var(--text-soft);
  text-align: right;
}

.value-over {
  color: var(--text-faint);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.doc-section {
  position: relative;
  margin-top: 24px;
  padding: 34px 42px 42px;
  border: 1px solid rgba(60, 47, 34, 0.1);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
}

.doc-section::before {
  content: attr(data-group);
  position: absolute;
  top: 18px;
  right: 22px;
  color: var(--text-faint);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-inner {
  max-width: var(--measure);
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  color: #1d1712;
  line-height: 1.18;
  letter-spacing: -0.035em;
}

h1 {
  margin: 0 0 16px;
  font: 700 2.25rem/1.05 var(--font-serif);
}

h2 {
  margin: 52px 0 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(60, 47, 34, 0.1);
  font: 700 clamp(1.7rem, 2vw, 2.2rem) / 1.08 var(--font-serif);
}

h3 {
  margin: 34px 0 12px;
  font: 700 1.28rem/1.18 var(--font-sans);
}

h4 {
  margin: 26px 0 10px;
  font-size: 1.05rem;
}

h5,
h6 {
  margin: 22px 0 8px;
  color: var(--text-soft);
  font-size: 0.95rem;
}

p,
ul,
ol,
blockquote,
pre,
table,
hr {
  margin: 0 0 18px;
}

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

strong {
  color: #1d1712;
}

em {
  color: var(--text-soft);
}

ul,
ol {
  padding-left: 22px;
}

li {
  margin-bottom: 8px;
}

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

blockquote {
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  border-radius: 0 18px 18px 0;
  background: linear-gradient(90deg, rgba(159, 47, 36, 0.08), rgba(159, 47, 36, 0.02));
}

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

code {
  padding: 0.14rem 0.42rem;
  border: 1px solid rgba(60, 47, 34, 0.14);
  border-radius: 8px;
  color: var(--emerald);
  background: rgba(29, 107, 87, 0.08);
  font: 600 0.86em/1.4 var(--font-mono);
}

pre {
  overflow-x: auto;
  padding: 18px 20px;
  border: 1px solid rgba(60, 47, 34, 0.12);
  border-radius: 20px;
  background: #1f2937;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

pre code {
  padding: 0;
  border: 0;
  color: #f6efe4;
  background: transparent;
}

table {
  width: 100%;
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
  border-spacing: 0;
  border: 1px solid rgba(60, 47, 34, 0.12);
  border-radius: 18px;
  background: rgba(255, 252, 247, 0.62);
}

thead {
  background: rgba(36, 29, 23, 0.04);
}

th,
td {
  min-width: 140px;
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(60, 47, 34, 0.08);
}

th {
  color: #1d1712;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

tbody tr:hover td {
  background: rgba(159, 47, 36, 0.03);
}

hr {
  border: 0;
  border-top: 1px solid rgba(60, 47, 34, 0.12);
}

sup a {
  font-weight: 800;
}

.site-footer {
  margin-top: 24px;
  padding: 22px 28px 8px;
  color: var(--text-soft);
  text-align: center;
  font-size: 0.95rem;
}

.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(60, 47, 34, 0.14);
  border-radius: 50%;
  background: rgba(255, 252, 247, 0.92);
  color: var(--text);
  box-shadow: 0 18px 40px rgba(69, 48, 28, 0.12);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--transition),
    transform var(--transition),
    background-color var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: #fff;
  transform: translateY(-2px);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(24, 18, 14, 0.44);
  z-index: 99;
}

.sidebar-overlay.active {
  display: block;
}

@media (max-width: 1220px) {
  .main-shell {
    width: min(calc(100vw - var(--sidebar-w) - 36px), 100%);
  }

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

@media (max-width: 960px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-close,
  .mobile-header {
    display: flex;
  }

  .sidebar-close {
    align-items: center;
    justify-content: center;
  }

  .main {
    margin-left: 0;
  }

  .main-shell {
    width: min(100% - 24px, 100%);
    padding: 14px 0 42px;
  }

  .hero {
    padding: 28px 22px;
    border-radius: 26px;
  }

  .doc-section {
    padding: 26px 20px 30px;
    border-radius: 24px;
  }

  .doc-section::before {
    position: static;
    display: block;
    margin-bottom: 16px;
  }

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

  .value-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .value-right {
    text-align: left;
  }

  .value-over {
    display: none;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .hero h1 {
    font-size: 2.6rem;
  }

  .button-link {
    width: 100%;
  }

  .meta-card,
  .hero-loop,
  .values-panel {
    border-radius: 20px;
  }
}

@media print {
  body {
    background: #fff;
  }

  body::before,
  .sidebar,
  .mobile-header,
  .scroll-progress,
  .back-to-top,
  .sidebar-overlay {
    display: none !important;
  }

  .main {
    margin: 0;
  }

  .main-shell {
    width: 100%;
    padding: 0;
  }

  .hero,
  .doc-section {
    box-shadow: none;
    background: #fff;
    border: 1px solid #ddd;
  }
}