/* ==========================================
   Blockspace Forum
   Monochrome. Monospace-forward. Cypherpunk.
   ========================================== */

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

:root {
  --bg-primary: #000000;
  --bg-secondary: #060606;
  --bg-card: #0a0a0a;
  --bg-card-hover: #101010;
  --bg-surface: #0d0d0d;
  --text-primary: #e8e8e8;
  --text-secondary: #777777;
  --text-muted: #3d3d3d;
  --border: #161616;
  --border-light: #222222;
  --accent: #e8e8e8;
  --max-width: 720px;
  --max-width-wide: 1400px;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', Menlo, monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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


/* ---- Page Load Animation ---- */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

main {
  animation: fadeUp 0.5s ease-out both;
}

/* ---- Custom Scrollbar ---- */

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) var(--bg-primary);
}

::selection {
  background: rgba(232, 232, 232, 0.12);
  color: var(--text-primary);
}

/* ---- Progress Bar ---- */

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 1px;
  background: var(--text-secondary);
  z-index: 200;
  width: 0%;
  transition: width 50ms linear;
}

/* ---- Layout ---- */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--wide {
  max-width: var(--max-width-wide);
}

/* ---- Navigation ---- */

nav {
  border-bottom: 1px solid var(--border);
  padding: 0.85rem 0;
  position: sticky;
  top: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
}

nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--text-primary);
}

.nav-brand img {
  width: 24px;
  height: 24px;
  border-radius: 3px;
}

.nav-brand span {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: -0.02em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color 0.25s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text-primary);
  transition: width 0.25s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-socials {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-left: 1.25rem;
  border-left: 1px solid var(--border);
}

.nav-socials a, .social-icon {
  color: var(--text-muted);
  transition: color 0.25s ease;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.nav-socials a:hover, .social-icon:hover {
  color: var(--text-primary);
}

/* ---- Hero (Landing) ---- */

.hero {
  padding: 5rem 0 3rem;
  text-align: center;
  position: relative;
  overflow: visible;
}

.hero-hex {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  max-width: none;
  height: 100%;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.20);
  white-space: pre;
  text-align: left;
  pointer-events: none;
  overflow: hidden;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 0%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 0%, transparent 85%);
  z-index: 0;
  padding: 2rem;
}

.hero > *:not(.hero-hex) {
  position: relative;
  z-index: 1;
}

.hero img {
  width: 64px;
  height: 64px;
  border-radius: 10px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  letter-spacing: -0.04em;
  line-height: 1.2;
}

.hero .tagline {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 440px;
  margin: 0 auto 2.25rem;
  line-height: 1.65;
}

.hero-links {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1rem;
  border: 1px solid var(--border-light);
  border-radius: 4px;
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  transition: all 0.2s;
}

.hero-links a:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
  background: var(--bg-card);
}

/* ---- Homepage Stats ---- */

.homepage-stats {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
}

.homepage-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: center;
}

.homepage-stat-number {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.05em;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.homepage-stat-text {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---- Data Divider ---- */

.data-divider {
  width: 100%;
  overflow: hidden;
  padding: 0.4rem 0;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  color: var(--border-light);
  letter-spacing: 0.05em;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}

/* ---- Featured ---- */

.featured {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.featured-card {
  display: block;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.25s, background 0.25s, box-shadow 0.25s, transform 0.25s;
}

.featured-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transform: translateY(-1px);
}

.featured-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.featured-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
}

.featured-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---- Latest Posts Section (Landing) ---- */

.latest-posts {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
}

.latest-posts h2 {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.section-header a {
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 500;
  transition: color 0.2s;
}

.section-header a:hover {
  color: var(--text-secondary);
}

/* ---- Blog List ---- */

.blog-header {
  padding: 3rem 0 1.5rem;
}

.blog-header h1 {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.03em;
}

.blog-header p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
}

.post-list {
  padding: 0 0 4rem;
}

.post-card {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

.post-card:first-child {
  border-top: 1px solid var(--border);
}

.post-card:hover h3 {
  color: var(--text-primary);
}

.post-card:hover .post-subtitle {
  color: var(--text-primary);
}

.post-card .post-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  min-width: 1.5rem;
  flex-shrink: 0;
}

.post-card .post-info {
  flex: 1;
  min-width: 0;
}

.post-card .post-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
  font-variant-numeric: tabular-nums;
}

.post-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.post-card .post-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
  transition: color 0.2s;
}

/* ---- Post Page ---- */

.post-header {
  padding: 3.5rem 0 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.post-header .post-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.post-header .post-meta a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s, border-color 0.2s;
}

.post-header .post-meta a:hover {
  color: var(--text-secondary);
  border-color: var(--text-secondary);
}

.post-header h1 {
  font-size: 1.65rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.03em;
  line-height: 1.25;
}

.post-header .post-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---- Post Content ---- */

.post-content {
  padding-bottom: 3rem;
}

.post-content p {
  margin-bottom: 1.4rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.post-content > p:first-child,
.post-content > .toc + p {
  color: var(--text-primary);
  font-size: 1rem;
}

.post-content h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 3rem 0 1rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.post-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 2.25rem 0 0.75rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.post-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.post-content a {
  color: var(--text-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--border-light);
  transition: border-color 0.2s;
}

.post-content a:hover {
  border-color: var(--text-secondary);
}

.post-content figure {
  margin: 2rem 0;
}

.post-content figure img {
  width: 100%;
  border-radius: 4px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  transition: border-color 0.3s;
}

.post-content figure img:hover {
  border-color: var(--border-light);
}

.post-content figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  line-height: 1.5;
  padding-left: 0.25rem;
}

.post-content img {
  width: 100%;
  border-radius: 4px;
  margin: 2rem 0;
  border: 1px solid var(--border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  transition: border-color 0.3s;
}

.post-content img:hover {
  border-color: var(--border-light);
}

.post-content video,
.learn-video {
  width: 100%;
  border-radius: 4px;
  margin: 2rem 0;
  border: 1px solid var(--border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  display: block;
}

.post-content ul,
.post-content ol {
  margin-bottom: 1.4rem;
  padding-left: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.post-content li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.post-content blockquote {
  border-left: 2px solid var(--border-light);
  padding: 0.75rem 0 0.75rem 1.25rem;
  margin: 2rem 0;
  background: var(--bg-card);
  border-radius: 0 4px 4px 0;
}

.post-content blockquote p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0;
}

.post-content blockquote p + p {
  margin-top: 0.75rem;
}

/* ---- Stat Callouts ---- */

.stat-callout {
  display: flex;
  gap: 1.25rem;
  padding: 1.15rem 1.35rem;
  margin: 2rem 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 2px solid var(--text-muted);
  border-radius: 0 4px 4px 0;
}

.stat-callout .stat-number {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.stat-callout .stat-text {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.6;
  align-self: center;
}

/* ---- Table of Contents ---- */

.toc {
  margin: 0 0 2.5rem;
  padding: 1.15rem 1.35rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.toc-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: toc;
}

.toc li {
  counter-increment: toc;
  margin-bottom: 0.35rem;
}

.toc li::before {
  content: counter(toc, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-muted);
  margin-right: 0.75rem;
}

.toc a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  transition: color 0.2s;
}

.toc a:hover {
  color: var(--text-primary);
}

/* ---- Post Navigation ---- */

.post-nav {
  display: flex;
  justify-content: space-between;
  padding: 1.75rem 0 4rem;
  border-top: 1px solid var(--border);
  gap: 1.5rem;
}

.post-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: color 0.2s;
}

.post-nav a:hover {
  color: var(--text-primary);
}

.post-nav .next {
  margin-left: auto;
  text-align: right;
}

.post-nav .label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* ---- Footer ---- */

footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.75rem;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer-socials {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.footer-socials a {
  color: var(--text-muted);
  transition: color 0.25s ease;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.footer-socials a:hover {
  color: var(--text-primary);
}

.footer-text {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

footer a:hover {
  color: var(--text-primary);
}

/* ---- Responsive ---- */

@media (max-width: 640px) {
  .hero {
    padding: 3.5rem 0 2.5rem;
  }

  .hero h1 {
    font-size: 1.4rem;
  }

  .hero .tagline {
    font-size: 0.9rem;
  }

  .hero-links {
    flex-direction: column;
    align-items: center;
  }

  .hero-hex {
    font-size: 0.4rem;
  }

  .homepage-stats-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .homepage-stat-number {
    font-size: 2rem;
  }

  .nav-brand span {
    font-size: 0.78rem;
  }

  .post-header h1 {
    font-size: 1.3rem;
  }

  .post-nav {
    flex-direction: column;
  }

  .post-nav .next {
    text-align: left;
    margin-left: 0;
  }

  .post-card {
    flex-direction: column;
    gap: 0.25rem;
  }

  .post-card .post-number {
    display: none;
  }
}

/* ---- Desktop (1024px+) ---- */

@media (min-width: 1024px) {
  :root {
    --max-width: 760px;
    --max-width-wide: 1280px;
  }

  body {
    font-size: 17px;
  }

  .hero {
    padding: 7rem 0 4rem;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero .tagline {
    font-size: 1.05rem;
    max-width: 500px;
  }

  .hero img {
    width: 76px;
    height: 76px;
  }

  .homepage-stats {
    padding: 3.5rem 0;
  }

  .homepage-stat-number {
    font-size: 3rem;
  }

  .homepage-stat-text {
    font-size: 0.85rem;
  }

  .featured-card {
    padding: 1.75rem;
  }

  .featured-card h3 {
    font-size: 1.05rem;
  }

  .latest-posts {
    padding: 3.5rem 0;
  }

  .blog-header {
    padding: 4rem 0 2rem;
  }

  .blog-header h1 {
    font-size: 1.5rem;
  }

  .post-card h3 {
    font-size: 1rem;
  }

  .post-header {
    padding: 4.5rem 0 2.5rem;
  }

  .post-header h1 {
    font-size: 2rem;
  }

  .post-header .post-subtitle {
    font-size: 1.05rem;
  }

  .post-content p {
    font-size: 1rem;
    line-height: 1.8;
  }

  .post-content > p:first-child,
  .post-content > .toc + p {
    font-size: 1.05rem;
  }

  .post-content h2 {
    font-size: 1.25rem;
  }

  .post-content h3 {
    font-size: 1.05rem;
  }

  .stat-callout .stat-number {
    font-size: 1.75rem;
  }

  .hero-links a {
    padding: 0.5rem 1.15rem;
    font-size: 0.78rem;
  }

  nav {
    padding: 0.9rem 0;
  }

  .nav-brand img {
    width: 28px;
    height: 28px;
  }

  .nav-brand span {
    font-size: 0.88rem;
  }

  footer {
    padding: 3rem 0;
  }
}

/* ---- Large Desktop (1440px+) ---- */

@media (min-width: 1440px) {
  :root {
    --max-width: 800px;
    --max-width-wide: 1400px;
  }

  body {
    font-size: 18px;
  }

  .hero {
    padding: 8rem 0 4.5rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero .tagline {
    font-size: 1.1rem;
    max-width: 540px;
  }

  .hero img {
    width: 84px;
    height: 84px;
    border-radius: 12px;
  }

  .homepage-stat-number {
    font-size: 3.5rem;
  }

  .post-header h1 {
    font-size: 2.15rem;
  }
}

/* ==========================================
   NEW SECTIONS — Landing Page Expansion
   ========================================== */

/* ---- Badge ---- */

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  background: rgba(232, 232, 232, 0.06);
  border: 1px solid var(--border-light);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

/* ---- Hero Updates ---- */

.hero-description {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: 100px;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.btn-primary:hover {
  background: #ffffff;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-light);
}

.btn-outline:hover {
  border-color: var(--text-secondary);
}

/* ---- Section Blocks ---- */

.section-block {
  padding: 64px 0;
  border-top: 1px solid var(--border);
}

.section-block h2 {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 8px;
}

.section-description {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 560px;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-header a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
}

.section-header a:hover {
  color: var(--text-primary);
}

/* ---- Focus Cards ---- */

.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.focus-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
}

.focus-icon {
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.focus-card h3 {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.focus-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ---- Learn Cards ---- */

.learn-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.learn-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 2px solid var(--text-secondary);
  border-radius: 10px;
  padding: 24px;
}

.learn-level {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.learn-card h3 {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.learn-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.status-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 12px;
  font-style: italic;
}

.status-link {
  display: inline-block;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 13px;
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: border-color 0.2s, color 0.2s;
}

.status-link:hover {
  color: #fff;
  border-color: var(--text-primary);
}

/* ---- Research Cards ---- */

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.research-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  position: relative;
  text-decoration: none;
}

.research-card h3 {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  padding-right: 24px;
}

.card-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.research-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.card-link {
  transition: border-color 0.15s ease, background 0.15s ease;
}

.card-link:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.card-arrow {
  position: absolute;
  top: 22px;
  right: 20px;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

.card-link:hover .card-arrow {
  color: var(--text-primary);
}

.card-disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* ---- Tooling ---- */

.tooling-group {
  margin-bottom: 40px;
}

.tooling-group:last-child {
  margin-bottom: 0;
}

.group-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.group-description {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.tooling-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.tool-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  position: relative;
  text-decoration: none;
}

.tool-card h3 {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  padding-right: 24px;
}

.tool-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.lang-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  background: rgba(232, 232, 232, 0.06);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
}

/* Observe grid: 4 columns */
.observe-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.observe-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
  position: relative;
  text-decoration: none;
}

.observe-card h3 {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
  padding-right: 20px;
}

.observe-card p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.observe-card .card-arrow {
  top: 16px;
  right: 16px;
}

/* ---- Events ---- */

.events-hero {
  padding-top: 120px;
  padding-bottom: 24px;
  text-align: center;
}

.events-hero h1 {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 8px;
}

.events-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.event-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.event-media {
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
}

.video-embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.event-placeholder {
  color: var(--text-muted);
}

.event-info {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.event-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.event-info h2 {
  font-family: var(--font-mono);
  font-size: 20px;
  margin-bottom: 10px;
}

.event-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ---- Footer Update ---- */

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  padding: 3px 0;
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.footer-socials {
  display: flex;
  gap: 16px;
}

/* ---- Responsive ---- */

@media (max-width: 768px) {
  .focus-grid,
  .learn-grid,
  .tooling-grid { grid-template-columns: 1fr; }
  .research-grid { grid-template-columns: 1fr; }
  .observe-grid { grid-template-columns: repeat(2, 1fr); }
  .event-card { grid-template-columns: 1fr; }
  .event-info { padding: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
}

@media (max-width: 480px) {
  .observe-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
}

/* 4-column focus grid */
.focus-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
  .focus-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .focus-grid-4 { grid-template-columns: 1fr; }
}

/* Page hero (research, events) */
.page-hero {
  padding-top: 120px;
  padding-bottom: 24px;
  text-align: center;
}

.page-hero h1 {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-hero p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Section "see more" link */
.section-more {
  margin-top: 24px;
  text-align: center;
}

/* Narrow container for learn pages */
.container--narrow {
  max-width: 720px;
}

/* ---- Thread Cards (homepage learning section) ---- */

.thread-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.thread-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  position: relative;
}

.thread-card h3 {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  padding-right: 24px;
}

.thread-card p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.6;
}

.thread-preview {
  list-style: none;
  padding: 0;
}

.thread-preview li {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  padding: 4px 0;
  border-top: 1px solid var(--border);
}

.thread-preview li:first-child {
  border-top: none;
}

/* Learn page: intro grid */
.learn-posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 768px) {
  .thread-grid { grid-template-columns: 1fr; }
  .learn-posts-grid { grid-template-columns: 1fr; }
}

/* Hero scales with wide container */
@media (min-width: 1024px) {
  .hero h1 {
    font-size: 4rem;
  }
  .hero .tagline {
    font-size: 1.35rem;
  }
  .hero-description {
    font-size: 15px;
    max-width: 640px;
  }
}

@media (min-width: 1440px) {
  .hero h1 {
    font-size: 4.5rem;
  }
  .hero .tagline {
    font-size: 1.5rem;
  }
}

/* Bridge section */
.bridge-section {
  padding-top: 48px;
  padding-bottom: 48px;
}

.bridge-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

@media (min-width: 1024px) {
  .bridge-text {
    font-size: 16px;
    max-width: 860px;
  }
}

/* Section labels (narrative storytelling pattern) */
.section-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.section-block .section-label + h2 {
  margin-top: 0;
}

/* Narrative row layout (text + visual side by side) */
.narrative-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.narrative-row--reverse {
  direction: rtl;
}

.narrative-row--reverse > * {
  direction: ltr;
}

.narrative-text p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.narrative-text h2 {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
}

.narrative-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-arrow {
  font-size: 18px;
  transition: transform 0.2s ease;
}

.narrative-cta:hover .btn-arrow {
  transform: translateX(3px);
}

/* ASCII visuals for narrative sections */
.narrative-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-width: 0;
}

.narrative-ascii {
  font-family: var(--font-mono);
  font-size: clamp(10px, 1.4vw, 14px);
  line-height: 1.6;
  white-space: pre;
  padding: clamp(16px, 3vw, 32px);
  border: 1px solid var(--border);
  background: transparent;
  width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.ascii-dim { color: var(--text-muted); }
.ascii-hi { color: var(--text-primary); font-weight: 600; }
.ascii-val { color: #888; }
.ascii-muted { color: #555; }

/* Community CTAs row */
.community-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

/* Responsive: stack narrative rows on mobile */
@media (max-width: 768px) {
  .narrative-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .narrative-row--reverse {
    direction: ltr;
  }

  .narrative-visual {
    order: -1;
  }

  .narrative-ascii {
    font-size: 12px;
    padding: 20px;
  }

  .community-ctas {
    flex-direction: column;
  }
}

/* Blockchain SVG visual */
.blockchain-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Tools compact layout */
.tools-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.tools-col h3 {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.tools-col > p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.tools-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tools-list li {
  border-top: 1px solid var(--border);
  padding: 10px 0;
}

.tools-list li:last-child {
  border-bottom: 1px solid var(--border);
}

.tools-list a {
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s ease;
}

.tools-list a:hover {
  color: #fff;
}

.tools-desc {
  font-family: var(--font-body, Inter, sans-serif);
  font-weight: 400;
  color: var(--text-muted);
  font-size: 13px;
}

@media (max-width: 768px) {
  .tools-columns {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* Pipeline SVG visual */
.pipeline-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Hamburger button */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 110;
}

.nav-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  margin: 4px 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-hamburger.is-active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.is-active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav-hamburger {
    display: block;
  }

  .nav-right {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.98);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    z-index: 105;
  }

  .nav-right.is-open {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
  }

  .nav-links a {
    font-size: 1.1rem;
  }

  .nav-socials {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
  }
}

/* Mission pillars */
.mission-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 32px;
}

.mission-pillar h3 {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.mission-pillar p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .mission-pillars {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* Open Source Rails cards */
.rails-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 24px;
}

.rails-card {
  border: 1px solid var(--border);
  padding: 28px;
  border-radius: 4px;
}

.rails-card h3 {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.rails-subtitle {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.rails-card > p:not(.rails-subtitle) {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.rails-features {
  list-style: none;
  padding: 0;
  margin: 0 0 20px 0;
}

.rails-features li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 5px 0;
  padding-left: 16px;
  position: relative;
}

.rails-features li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--text-muted);
  font-weight: bold;
}

.rails-link {
  font-size: 13px;
}

/* Observe links (compact horizontal) */
.observe-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}

.observe-links li {
  border-top: none;
  border-bottom: none;
}

@media (max-width: 768px) {
  .rails-grid {
    grid-template-columns: 1fr;
  }
}

/* Animation canvases */
#blockspace-canvas,
#pipeline-canvas {
  width: 100%;
  height: 100%;
  min-height: 240px;
  display: block;
}

.narrative-visual:has(canvas) {
  min-height: 240px;
}

/* ---- Site Banner ---- */

.site-banner {
  background: #141414;
  border-bottom: 1px solid var(--border-light);
  padding: 10px 0;
  font-size: 0.85rem;
  position: relative;
  z-index: 1001;
}

.site-banner-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.site-banner-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #b0b0b0;
  text-decoration: none;
  transition: color 0.2s;
}

.site-banner-link:hover {
  color: var(--text-primary);
}

.site-banner-text {
  border-left: 2px solid #555;
  padding-left: 10px;
}

.site-banner-arrow {
  opacity: 0.5;
  transition: opacity 0.2s;
}

.site-banner-link:hover .site-banner-arrow {
  opacity: 1;
}

.site-banner-close {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #555;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
  transition: color 0.2s;
}

.site-banner-close:hover {
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .site-banner {
    font-size: 0.8rem;
    padding: 8px 0;
  }
  .site-banner-close {
    right: 8px;
  }
}

/* Learn page bottom navigation */
.learn-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  gap: 2rem;
}
.learn-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.learn-nav a:hover {
  color: var(--text-primary);
}
.learn-nav-prev { margin-right: auto; }
.learn-nav-next { margin-left: auto; }

/* Nav tagline */
.nav-tagline {
  color: var(--text-secondary);
  font-weight: 400;
}
@media (max-width: 480px) {
  .nav-tagline { display: none; }
}

/* Disclaimer page */
.disclaimer-content {
  max-width: 720px;
  margin: 2rem auto;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
}
.disclaimer-content h1 { color: var(--text-primary); margin-bottom: 1.5rem; }
.disclaimer-content h2 { color: var(--text-primary); margin-top: 2rem; font-size: 1.1rem; }
.disclaimer-content h3 { color: var(--text-primary); margin-top: 1.5rem; font-size: 1rem; }
.disclaimer-content ol { padding-left: 1.5rem; }
.disclaimer-content li { margin-bottom: 0.75rem; }
.footer-legal {
  color: var(--text-secondary);
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.footer-legal:hover { opacity: 1; }