:root {
  --bg: #0b0f17;
  --bg-elevated: #111827;
  --bg-card: #151d2c;
  --border: #1f2937;
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-2: #10b981;
  --accent-3: #ef4444;
  --radius: 12px;
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1;
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  gap: 2rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  opacity: 0.6;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
}

/* Hero */
.hero {
  padding: 6rem 0 4rem;
  background: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.15), transparent 50%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-2);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text);
  opacity: 0.6;
  max-width: 540px;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.25);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
}

.hero-stats {
  display: flex;
  gap: 2rem;
  font-size: 0.95rem;
  color: var(--text);
  opacity: 0.6;
}

.hero-stats strong {
  display: block;
  color: var(--text);
  font-size: 1.4rem;
  font-weight: 700;
}

/* Code window */
.code-window {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.code-window.wide {
  max-width: 720px;
  margin-inline: auto;
}

.code-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.code-title {
  margin-left: 0.5rem;
  font-size: 0.8rem;
  color: var(--text);
  opacity: 0.6;
  font-family: var(--font-mono);
}

.code-window pre {
  padding: 1.25rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  color: #e2e8f0;
  text-align: left;
}

.code-window code {
  font-family: inherit;
}

/* Sections */
.section-title {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text);
  opacity: 0.6;
  margin-bottom: 2.5rem;
}

.plugin-category-section {
  margin-top: 3rem;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.category-header:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.category-icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  flex-shrink: 0;
}

.category-icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.category-meta {
  flex: 1;
}

.category-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: left;
  margin-bottom: 0.25rem;
}

.category-subtitle {
  text-align: left;
  color: var(--text);
  opacity: 0.6;
  margin: 0;
}

.category-count {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  color: var(--text);
  opacity: 0.7;
  font-size: 0.8rem;
  font-weight: 600;
  flex-shrink: 0;
}

/* Features */
.features {
  padding: 5rem 0;
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent);
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text);
  opacity: 0.6;
  font-size: 0.95rem;
}

.feature-card code {
  background: rgba(255, 255, 255, 0.08);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* Install */
.install {
  padding: 5rem 0;
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.install-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.install-card h3 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.code-block {
  position: relative;
  background: #020617;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

.code-block pre {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #e2e8f0;
  overflow-x: auto;
  padding-right: 4rem;
}

.copy-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-card);
  color: var(--text);
  opacity: 0.6;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s;
}

.copy-btn:hover {
  color: var(--text);
  border-color: var(--accent);
}

.copy-btn.copied {
  color: var(--accent-2);
  border-color: var(--accent-2);
}

/* Release platform links */
.release-main {
  width: 100%;
  margin-bottom: 1rem;
}

.release-platforms {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  font-size: 0.85rem;
  color: var(--text);
  opacity: 0.6;
}

.release-platform-label {
  font-weight: 500;
}

.release-platform-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--accent);
  font-weight: 500;
  transition: color 0.15s;
}

.release-platform-link:hover {
  color: #60a5fa;
}

.release-platform-link svg {
  flex-shrink: 0;
}

/* Plugins */
.plugins {
  padding: 5rem 0;
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
  text-align: center;
}

.plugin-showcase {
  margin-bottom: 2rem;
}

.plugin-tiers {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.tier {
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: 0.9rem;
  font-weight: 500;
}

/* Books */
.books {
  padding: 5rem 0;
}

.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.book-card {
  display: block;
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, transform 0.2s;
}

.book-card:hover {
  border-color: var(--accent-2);
  transform: translateY(-4px);
}

.book-lang {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.book-card h3 {
  margin-bottom: 0.5rem;
}

.book-card p {
  color: var(--text);
  opacity: 0.6;
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.book-link {
  color: var(--accent-2);
  font-weight: 600;
  font-size: 0.95rem;
}

/* ── Approved plugins ──────────────────────────────────────────── */

.plugin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.plugin-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.plugin-card:hover {
  border-color: var(--accent-2);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.plugin-card-head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

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

.plugin-badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.plugin-badge.native {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-2);
}

.plugin-badge.script {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent);
}

.plugin-badge.wasm {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-3);
}

.plugin-category {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  background: rgba(148, 163, 184, 0.12);
  color: var(--text);
  opacity: 0.6;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.plugin-card p.desc {
  color: var(--text);
  opacity: 0.6;
  font-size: 0.92rem;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.plugin-fns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.plugin-fn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.15rem 0.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
}

.plugin-install {
  display: flex;
  align-items: center;
  gap: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.plugin-install code {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-2);
  background: none;
  white-space: nowrap;
  padding: 0.5rem 0.75rem;
  overflow: hidden;
  text-overflow: ellipsis;
}

.install-copy-btn {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  min-height: 36px;
  border: none;
  border-left: 1px solid var(--border);
  border-radius: 0 6px 6px 0;
  background: var(--bg-elevated);
  color: var(--text);
  opacity: 0.5;
  cursor: pointer;
  transition: opacity 0.15s, color 0.15s, background 0.15s;
}

.install-copy-btn:hover {
  color: var(--accent-2);
  background: rgba(16, 185, 129, 0.08);
  opacity: 1;
}

.install-copy-btn.copied {
  color: var(--accent-2);
  background: rgba(16, 185, 129, 0.15);
  opacity: 1;
}



.plugin-card-foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.plugin-version {
  font-size: 0.8rem;
  color: var(--text);
  opacity: 0.6;
}

.plugin-link {
  color: var(--accent-2);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
}

.plugin-link:hover {
  text-decoration: underline;
}

/* CTA */
.cta {
  padding: 5rem 0;
  text-align: center;
  background: radial-gradient(ellipse at bottom, rgba(16, 185, 129, 0.12), transparent 50%);
}

.cta h2 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.cta p {
  color: var(--text);
  opacity: 0.6;
  margin-bottom: 2rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  background: var(--bg-elevated);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  color: var(--text);
  opacity: 0.6;
  font-size: 0.95rem;
}

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

.footer-copy {
  font-size: 0.85rem;
  color: var(--text);
  opacity: 0.6;
}

/* Page hero (internal pages) */
.page-hero {
  padding: 5rem 0 2.5rem;
  text-align: center;
  background: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.1), transparent 50%);
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.page-subtitle {
  color: var(--text);
  opacity: 0.6;
  font-size: 1.1rem;
  max-width: 640px;
  margin-inline: auto;
}

/* Docs layout */
.docs-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  padding: 3rem 0 5rem;
}

.toc {
  position: sticky;
  top: 6rem;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toc h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  color: var(--text);
  opacity: 0.6;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.toc a {
  color: var(--text);
  opacity: 0.6;
  font-size: 0.95rem;
  padding: 0.25rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
}

.toc a:hover {
  color: var(--accent);
  border-left-color: var(--accent);
}

.docs-body {
  color: var(--text);
}

.docs-body h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.docs-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 1.75rem 0 0.75rem;
}

.docs-body p {
  color: var(--text);
  opacity: 0.6;
  margin-bottom: 1rem;
}

.docs-body ul {
  margin: 1rem 0 1.5rem 1.25rem;
  color: var(--text);
  opacity: 0.6;
}

.docs-body li {
  margin-bottom: 0.5rem;
}

.docs-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.docs-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
}

.docs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.docs-table th,
.docs-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.docs-table th {
  font-weight: 600;
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.docs-table td {
  color: var(--text);
  opacity: 0.6;
}

.docs-table td code {
  white-space: nowrap;
}

.keyword {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: #93c5fd;
  font-family: var(--font-mono);
  font-size: 0.85em;
  font-weight: 500;
}

.keyword-tag,
.version-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #6ee7b7;
  font-size: 0.8rem;
  font-weight: 600;
}

/* Syntax highlighting tokens */
.token-keyword {
  color: #c084fc;
  font-weight: 600;
}

.token-string {
  color: #86efac;
}

.token-comment {
  color: #64748b;
  font-style: italic;
}

.token-number {
  color: #fdba74;
}

.token-operator {
  color: #38bdf8;
  font-weight: 600;
}

.token-func {
  color: #60a5fa;
}

@media (max-width: 900px) {
  .docs-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .toc {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .toc h3 {
    width: 100%;
  }

  .toc a {
    border-left: none;
    padding-left: 0;
    padding: 0.35rem 0.75rem;
    background: var(--bg-card);
    border-radius: 999px;
  }
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-stats {
    gap: 1.25rem;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 3rem 0 2rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}