@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Condensed:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --canvas: #000000;
  --paper: #04080d;
  --paper-2: #08111a;
  --paper-3: #0c1622;
  --ink: #f8fbff;
  --ink-soft: #d4deea;
  --ink-muted: #9db0c3;
  --line: rgba(0, 232, 255, 0.2);
  --line-strong: rgba(0, 232, 255, 0.38);
  --blue: #00e8ff;
  --green: #00ff99;
  --orange: #ffc73a;
  --red: #ff4d98;
  --shadow: 0 0 26px rgba(0, 232, 255, 0.12);
  --shadow-soft: 0 0 18px rgba(0, 232, 255, 0.08);
  --focus: rgba(0, 232, 255, 0.34);
  --max-width: 1240px;
  --radius-lg: 8px;
  --radius-md: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(0, 232, 255, 0.14), transparent 18%),
    radial-gradient(circle at 84% 18%, rgba(255, 77, 152, 0.12), transparent 16%),
    radial-gradient(circle at 84% 76%, rgba(0, 255, 153, 0.12), transparent 16%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.98), rgba(2, 5, 10, 1));
  background-color: var(--canvas);
}

body::before {
  content: '';
  position: fixed;
  inset: 0 0 auto;
  height: 70px;
  pointer-events: none;
  background: linear-gradient(90deg, var(--blue), var(--green), var(--orange), var(--red));
  opacity: 1;
  box-shadow: 0 0 32px rgba(0, 232, 255, 0.28);
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.site-shell {
  position: relative;
  z-index: 1;
  width: min(100% - 28px, var(--max-width));
  margin: 0 auto;
  padding: 92px 0 36px;
}

.panel,
.sidebar,
.content-panel,
.site-header {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 54px;
  height: 54px;
  display: block;
  flex: 0 0 auto;
  object-fit: contain;
}

.brand-copy span {
  display: block;
  margin-top: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-wordmark {
  display: block;
  width: min(360px, 100%);
  height: auto;
  filter: drop-shadow(0 0 18px rgba(255, 255, 255, 0.08));
}

.top-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.top-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid rgba(0, 232, 255, 0.14);
  border-radius: var(--radius-md);
  background: rgba(8, 17, 26, 0.9);
  color: var(--ink-soft);
  font-size: 1rem;
  font-weight: 600;
}

.top-nav a:hover,
.top-nav a.active {
  border-color: rgba(0, 232, 255, 0.45);
  background: var(--paper-3);
  color: var(--ink);
  box-shadow: 0 0 20px rgba(0, 232, 255, 0.12);
}

.hero,
.page-layout {
  display: grid;
  gap: 18px;
  margin-top: 20px;
  align-items: start;
}

.hero {
  grid-template-columns: minmax(0, 1fr) 340px;
}

.hero-focused {
  grid-template-columns: minmax(0, 1fr);
}

.page-layout {
  grid-template-columns: 320px minmax(0, 1fr);
}

.page-layout-focused {
  grid-template-columns: minmax(0, 1fr);
}

.hero-copy,
.hero-aside,
.sidebar,
.content-panel {
  padding: 24px;
}

.hero-aside {
  background: var(--paper-2);
}

.kicker {
  margin: 0 0 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero h1,
.prose h1 {
  margin: 0 0 12px;
  font-size: clamp(2.4rem, 4.8vw, 4.2rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.hero-aside h2,
.sidebar h2,
.prose h2 {
  margin: 0 0 10px;
  font-size: 1.9rem;
  line-height: 1;
  letter-spacing: -0.05em;
}

.page-intro,
.hero-aside p,
.nav-item .desc,
.path-card p,
.prose p,
.prose li {
  color: var(--ink-soft);
  font-size: 1.02rem;
  line-height: 1.58;
}

.quick-steps {
  margin: 0 0 16px;
  padding-left: 1.2rem;
  color: var(--ink-soft);
}

.quick-steps li + li {
  margin-top: 0.55rem;
}

.aside-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.aside-link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(8, 17, 26, 0.95);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
}

.aside-link:hover {
  background: var(--paper-3);
  border-color: rgba(0, 232, 255, 0.4);
  box-shadow: 0 0 16px rgba(0, 232, 255, 0.12);
}

.aside-note {
  margin: 0;
}

.sidebar {
  position: sticky;
  top: 18px;
  background: var(--paper-2);
}

.sidebar section + section {
  margin-top: 18px;
}

.sidebar h2 {
  margin-bottom: 12px;
  font-size: 1.05rem;
}

.nav-group {
  display: grid;
  gap: 8px;
}

.nav-item {
  display: grid;
  gap: 4px;
  padding: 14px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(8, 17, 26, 0.92);
}

.nav-item strong {
  font-size: 1rem;
}

.nav-item.active,
.nav-item:hover {
  border-color: rgba(0, 232, 255, 0.42);
  background: rgba(12, 22, 34, 0.98);
  box-shadow: 0 0 18px rgba(0, 232, 255, 0.12);
}

.content-panel {
  min-width: 0;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 22px;
}

.download-start {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.9fr);
  gap: 14px;
  margin: 18px 0 24px;
}

.download-path {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(8, 17, 26, 0.95);
}

.download-path h2 {
  margin: 0 0 8px;
}

.download-path p {
  margin: 0 0 14px;
}

.download-path-primary {
  border-color: rgba(0, 232, 255, 0.42);
  background: rgba(12, 22, 34, 0.98);
  box-shadow: 0 0 18px rgba(0, 232, 255, 0.1);
}

.step-list {
  margin: 0;
  padding-left: 1.2rem;
}

.step-list li + li {
  margin-top: 0.55rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: rgba(8, 17, 26, 0.96);
  color: var(--ink);
  font-size: 0.98rem;
  font-weight: 600;
}

.button:hover {
  background: var(--paper-3);
  border-color: rgba(0, 232, 255, 0.42);
  box-shadow: 0 0 18px rgba(0, 232, 255, 0.12);
}

.button.primary {
  background: rgba(0, 232, 255, 0.14);
  border-color: rgba(0, 232, 255, 0.58);
  color: var(--ink);
  box-shadow: 0 0 20px rgba(0, 232, 255, 0.18);
}

.button.primary:hover {
  background: rgba(0, 232, 255, 0.22);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 18px 0 24px;
}

.path-card {
  display: block;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(8, 17, 26, 0.95);
}

.path-card:hover {
  border-color: rgba(0, 232, 255, 0.42);
  box-shadow: 0 0 22px rgba(0, 232, 255, 0.14);
}

.path-card h3,
.prose h3 {
  margin: 0 0 8px;
  font-size: 1.28rem;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.prose {
  font-size: 1rem;
  line-height: 1.72;
}

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

.layout-focused .content-panel.prose > h1:first-child {
  display: none;
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose a {
  color: var(--blue);
  border-bottom: 1px solid rgba(0, 232, 255, 0.28);
}

.prose code,
.prose pre {
  font-family: 'IBM Plex Mono', monospace;
}

.prose code {
  padding: 0.12rem 0.3rem;
  border: 1px solid rgba(0, 232, 255, 0.2);
  border-radius: 4px;
  background: rgba(8, 17, 26, 0.96);
}

.prose pre {
  overflow: auto;
  padding: 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: #04080d;
  color: #f7fbff;
  box-shadow: inset 0 0 24px rgba(0, 232, 255, 0.05);
}

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

.prose table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
}

.prose th,
.prose td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.prose th {
  background: rgba(8, 17, 26, 0.96);
}

.prose blockquote {
  padding-left: 16px;
  border-left: 4px solid var(--orange);
}

.prose img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
}

@media (max-width: 980px) {
  .hero,
  .page-layout,
  .download-start {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100% - 18px, var(--max-width));
    padding-top: 74px;
  }

  .site-header {
    flex-direction: column;
    align-items: stretch;
  }

  .top-nav {
    width: 100%;
  }

  .top-nav a {
    flex: 1 1 140px;
  }

  .hero-copy,
  .hero-aside,
  .sidebar,
  .content-panel {
    padding: 18px;
  }

  .hero h1,
  .prose h1 {
    font-size: clamp(2.25rem, 9vw, 3.6rem);
  }
}