:root {
  color-scheme: light dark;
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-alt: #f1f5f9;
  --surface-elevated: #ffffff;
  --ink: #0f172a;
  --ink-secondary: #1f2937;
  --muted: #475569;
  --border: #e2e8f0;
  --grid: #e5eaf0;
  --teal: #0b766e;
  --teal-hover: #095f59;
  --teal-soft: rgba(11, 118, 110, 0.1);
  --teal-border: rgba(11, 118, 110, 0.32);
  --amber: #a25212;
  --amber-soft: rgba(162, 82, 18, 0.1);
  --code-bg: #0f172a;
  --code-ink: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.16), 0 8px 16px -6px rgba(15, 23, 42, 0.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #090d14;
    --surface: #0d1117;
    --surface-alt: #141b24;
    --surface-elevated: #161f2b;
    --ink: #e6edf3;
    --ink-secondary: #d0d7de;
    --muted: #94a3b8;
    --border: #252e3a;
    --grid: #252e3a;
    --teal: #5cdbca;
    --teal-hover: #7ce6d8;
    --teal-soft: rgba(92, 219, 202, 0.12);
    --teal-border: rgba(92, 219, 202, 0.35);
    --amber: #f2b36f;
    --amber-soft: rgba(242, 179, 111, 0.12);
    --code-bg: #070a0f;
    --code-ink: #e6edf3;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 24px 48px -12px rgba(0, 0, 0, 0.72);
  }
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

a {
  color: var(--teal);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  text-decoration: underline;
}

code,
pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

:not(pre) > code {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  padding: 0.15em 0.4em;
  border-radius: 5px;
  color: var(--ink);
  font-size: 0.86em;
}

/* Layout Containers */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Sticky Top Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  flex-shrink: 0;
}

.brand-version {
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 0.12rem 0.48rem;
  border-radius: 999px;
  background: var(--teal-soft);
  color: var(--teal);
  border: 1px solid var(--teal-border);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--ink);
}

.nav-gh {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.38rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--ink) !important;
  font-weight: 600 !important;
}

.nav-gh:hover {
  border-color: var(--teal-border);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 4rem 0 3.5rem;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 80% 50% at 50% -15%, var(--teal-soft), transparent),
    radial-gradient(ellipse 50% 40% at 85% 15%, var(--amber-soft), transparent);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: start;
}

.hero-identity {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  margin-bottom: 1.25rem;
}

.hero-logo {
  width: 76px;
  height: 76px;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  flex-shrink: 0;
}

.hero-title {
  margin: 0;
  font-size: clamp(2.1rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.hero-tagline {
  margin: 0.3rem 0 0;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--teal);
}

.hero-lead {
  font-size: 1.08rem;
  color: var(--ink-secondary);
  margin: 0 0 1rem;
}

.hero-sublead {
  font-size: 0.96rem;
  color: var(--muted);
  margin: 0 0 1.4rem;
}

/* Badges row */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.badge-row a,
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.28rem 0.68rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink-secondary);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}

.badge-row a:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
}

/* Download Card & Big Autodetect Button */
.download-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
}

.download-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

.download-panel-title {
  font-size: 0.84rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0;
}

.detected-badge {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  background: var(--teal-soft);
  color: var(--teal);
  border: 1px solid var(--teal-border);
  font-weight: 600;
}

/* Big Download Split / Action Group */
.dl-action-group {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.dl-primary-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: #0b766e;
  color: #ffffff !important;
  text-decoration: none !important;
  box-shadow: 0 8px 20px -4px rgba(11, 118, 110, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.16);
  transition: transform 0.14s ease, background-color 0.14s ease, box-shadow 0.14s ease;
}

@media (prefers-color-scheme: dark) {
  .dl-primary-btn {
    background: linear-gradient(135deg, #0d9488 0%, #0b766e 100%);
    box-shadow: 0 10px 24px -4px rgba(13, 148, 136, 0.4);
  }
}

.dl-primary-btn:hover {
  background: #095f59;
  transform: translateY(-1px);
  box-shadow: 0 12px 26px -4px rgba(11, 118, 110, 0.55);
}

.dl-primary-btn:active {
  transform: translateY(0);
}

.dl-btn-left {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  min-width: 0;
}

.dl-btn-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.16);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.dl-btn-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.dl-btn-main {
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.25;
  color: #ffffff;
}

.dl-btn-sub {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: rgba(255, 255, 255, 0.86);
  margin-top: 0.15rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dl-btn-badge {
  font-size: 0.76rem;
  font-weight: 700;
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.22);
  color: #ffffff;
  font-family: var(--font-mono);
  flex-shrink: 0;
}

/* Alternate format pills for the active platform */
.dl-alt-formats {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--muted);
  padding: 0.15rem 0;
}

.dl-alt-label {
  font-weight: 600;
  margin-right: 0.15rem;
}

.dl-format-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.16rem 0.5rem;
  border-radius: 6px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-secondary);
  text-decoration: none;
}

.dl-format-pill:hover {
  border-color: var(--teal);
  color: var(--teal);
  text-decoration: none;
}

/* Manual Fallback Dropdown Menu */
.dl-fallback {
  position: relative;
  margin-top: 0.2rem;
}

.dl-fallback-summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.62rem 0.9rem;
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.dl-fallback-summary::-webkit-details-marker {
  display: none;
}

.dl-fallback-summary:hover {
  border-color: var(--teal-border);
}

.dl-fallback[open] .dl-fallback-summary {
  border-color: var(--teal);
  background: var(--teal-soft);
}

.dl-chevron {
  transition: transform 0.2s ease;
}

.dl-fallback[open] .dl-chevron {
  transform: rotate(180deg);
}

.dl-fallback-menu {
  margin-top: 0.5rem;
  padding: 0.85rem;
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.dl-menu-hint {
  margin: 0 0 0.65rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.dl-target-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.dl-target-item {
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  transition: border-color 0.15s ease;
}

.dl-target-item.is-selected {
  border-color: var(--teal);
  background: var(--teal-soft);
}

.dl-target-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.dl-target-select-btn {
  appearance: none;
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  text-align: left;
}

.dl-target-select-btn:hover {
  color: var(--teal);
}

.dl-rid-tag {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--muted);
  padding: 0.08rem 0.4rem;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.dl-target-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.dl-target-links a {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 0.15rem 0.48rem;
  border-radius: 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink-secondary);
  text-decoration: none;
}

.dl-target-links a:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.dl-target-links a.dl-link-primary {
  font-weight: 600;
  border-color: var(--teal-border);
  color: var(--teal);
}

.dl-menu-footer {
  margin-top: 0.75rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
}

/* NuGet Quick Box inside Download Panel */
.nuget-box {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.nuget-box-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.45rem;
}

.cmd-snippet {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  overflow-x: auto;
}

.cmd-snippet code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  white-space: nowrap;
}

.copy-btn {
  appearance: none;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #e2e8f0;
  border-radius: 5px;
  padding: 0.22rem 0.55rem;
  font-size: 0.74rem;
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color 0.15s ease;
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Sections */
.section {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border);
}

.section-alt {
  background: var(--surface-alt);
}

.section-header {
  max-width: 780px;
  margin-bottom: 2rem;
}

.section-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--teal);
  margin: 0 0 0.35rem;
}

.section-title {
  font-size: clamp(1.6rem, 2.8vw, 2.15rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 0.65rem;
  line-height: 1.2;
}

.section-desc {
  color: var(--muted);
  font-size: 1.02rem;
  margin: 0;
}

/* Photograph Comparison */
.photo-figure {
  margin: 0 0 1.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.photo-link {
  display: block;
  line-height: 0;
  background: #05070b;
}

.photo-img {
  width: 100%;
  height: auto;
  display: block;
}

.photo-caption {
  padding: 0.9rem 1.25rem;
  font-size: 0.88rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin: 1.5rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
  font-variant-numeric: tabular-nums;
}

th,
td {
  padding: 0.8rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--surface-alt);
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

tr:last-child td {
  border-bottom: none;
}

.num-col {
  text-align: right;
  white-space: nowrap;
}

.highlight-row {
  background: var(--teal-soft);
}

.highlight-row td {
  font-weight: 600;
}

.comparison-note {
  font-size: 0.92rem;
  color: var(--muted);
  margin: 1.25rem 0 1.75rem;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 1.25rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  box-shadow: var(--shadow-sm);
}

.feature-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.08rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.feature-icon {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: var(--teal-soft);
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

/* Quick Start & Code Blocks */
.quickstart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

.code-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.25rem;
}

.code-card:last-child {
  margin-bottom: 0;
}

.code-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1rem;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 600;
}

.code-lang {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
}

.code-block {
  margin: 0;
  padding: 1rem 1.15rem;
  background: var(--code-bg);
  color: var(--code-ink);
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.55;
}

.code-card-note {
  padding: 0.75rem 1rem;
  font-size: 0.86rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin: 0;
}

/* Performance Charts */
.perf-stack {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.perf-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.perf-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.2rem;
}

.perf-card p {
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.perf-chart {
  width: 100%;
  max-width: 880px;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
  border: 1px solid var(--grid);
}

/* CLI Platform Cards */
.cli-platforms {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.cli-os-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.cli-os-card.is-detected-os {
  border-color: var(--teal);
}

.cli-os-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.08rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cli-os-card p {
  margin: 0 0 0.85rem;
  font-size: 0.88rem;
  color: var(--muted);
}

/* Docs Directory Grid */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.doc-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.15rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--ink);
  text-decoration: none !important;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.doc-card:hover {
  border-color: var(--teal);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.doc-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  color: var(--teal);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.doc-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

/* Scope Box */
.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}

.scope-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.scope-box h3 {
  margin: 0 0 0.45rem;
  font-size: 1.02rem;
}

.scope-box p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Footer */
.site-footer {
  padding: 3rem 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive Breakpoints */
@media (max-width: 940px) {
  .hero-grid,
  .quickstart-grid,
  .cli-platforms,
  .scope-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 2.5rem 0;
  }
}

@media (max-width: 600px) {
  .site-nav a:not(.nav-gh) {
    display: none;
  }

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

  .dl-primary-btn {
    padding: 0.9rem 1rem;
  }

  .dl-btn-badge {
    display: none;
  }
}