.page-head {
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + 64px) 0 44px;
  border-bottom: 1px solid var(--line);
}

.page-head::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.12;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 85%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 85%);
  pointer-events: none;
}

.page-head .wrap {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
}

.page-head .breadcrumb {
  max-width: none;
  font-size: 11px;
  color: var(--text-3);
}

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

.breadcrumb span {
  color: var(--line-strong);
}

.page-head h1 {
  margin: 12px 0 16px;
  font-size: clamp(38px, 5.5vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.04em;
  font-weight: 800;
}

.page-head p {
  max-width: 640px;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.8;
}

.page-body {
  padding: 52px 0 88px;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 40px;
}

.fact-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.fact-card dt {
  margin-bottom: 6px;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.fact-card dd {
  font-size: 15px;
  font-weight: 600;
}

.fact-card dd small {
  display: block;
  margin-top: 3px;
  color: var(--text-3);
  font-size: 12px;
  font-weight: 400;
}

.content-section {
  margin-top: 48px;
}

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

.content-section > h2 {
  margin-bottom: 14px;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.content-section > p {
  max-width: 72ch;
  margin-bottom: 14px;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.85;
}

.content-section > p strong {
  color: var(--text);
  font-weight: 600;
}

.content-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 72ch;
  margin: 12px 0;
}

.content-list li {
  position: relative;
  padding-left: 18px;
  color: var(--text-2);
  font-size: 14.5px;
  line-height: 1.8;
}

.content-list li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--accent);
  opacity: 0.7;
}

.callout {
  max-width: 72ch;
  margin: 20px 0;
  padding: 16px 18px;
  border: 1px solid var(--line-strong);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--surface);
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
}

.callout strong {
  color: var(--text);
}

.callout--warn {
  border-left-color: var(--clay);
}

.join-steps {
  display: flex;
  flex-direction: column;
  max-width: 760px;
}

.join-step {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.join-step:last-child {
  border-bottom: 1px solid var(--line);
}

.join-step-num {
  padding-top: 2px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
}

.join-step h3 {
  margin-bottom: 6px;
  font-size: 16.5px;
}

.join-step p {
  color: var(--text-2);
  font-size: 14.5px;
  line-height: 1.8;
}

.plugin-group {
  margin-top: 52px;
}

.plugin-group:first-child {
  margin-top: 0;
}

.plugin-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  margin-bottom: 18px;
}

.plugin-group-head h2 {
  font-size: 20px;
  letter-spacing: -0.02em;
}

.plugin-group-head p {
  color: var(--text-3);
  font-size: 13px;
}

.plugin-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.plugin-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.plugin-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.plugin-icon {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--accent);
}

.plugin-icon svg {
  width: 18px;
  height: 18px;
}

.plugin-title {
  flex: 1;
  min-width: 0;
}

.plugin-title h3 {
  font-size: 16.5px;
  line-height: 1.3;
}

.plugin-role {
  margin-top: 2px;
  color: var(--text-3);
  font-size: 12px;
}

.version {
  flex: none;
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 10.5px;
  white-space: nowrap;
}

.plugin-card > p {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
}

.plugin-need {
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--text-3);
  font-size: 13px;
  line-height: 1.7;
}

.plugin-need strong {
  color: var(--text-2);
  font-weight: 600;
}

.plugin-card .text-link {
  margin-top: auto;
  padding-top: 4px;
}

.plugin-grid--compact .plugin-card {
  gap: 8px;
  padding: 18px;
}

.plugin-grid--compact .plugin-title h3 {
  font-size: 15px;
}

.plugin-grid--compact .plugin-card > p {
  font-size: 13px;
}

.faq-list {
  max-width: 800px;
  border-top: 1px solid var(--line-strong);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-size: 15.5px;
  font-weight: 600;
  list-style: none;
  cursor: pointer;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex: none;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-answer {
  max-width: 68ch;
  padding: 0 0 20px;
  color: var(--text-2);
  font-size: 14.5px;
  line-height: 1.85;
}

.faq-answer p + p {
  margin-top: 8px;
}

.faq-answer strong {
  color: var(--text);
  font-weight: 600;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

.about-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.about-card h2 {
  margin-bottom: 8px;
  font-size: 16px;
}

.about-card p {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
}

.friend-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.friend-grid--single {
  grid-template-columns: 1fr;
}

.friend-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.friend-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.friend-name {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 16px;
  font-weight: 700;
}

.friend-name svg {
  width: 14px;
  height: 14px;
  flex: none;
  color: var(--text-3);
}

.friend-card p {
  color: var(--text-2);
  font-size: 13.5px;
  line-height: 1.75;
}

.friend-url {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 11px;
}

.disclaimer {
  max-width: 76ch;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--text-3);
  font-size: 12.5px;
  line-height: 1.8;
}

.error-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: calc(var(--nav-h) + 40px) 0 60px;
  text-align: center;
}

.error-code {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: clamp(72px, 18vw, 160px);
  line-height: 1;
  letter-spacing: -0.06em;
}

.error-page .error-code {
  max-width: none;
  margin: 0;
  color: var(--accent);
  font-size: clamp(72px, 18vw, 160px);
}

.error-page h1 {
  margin: 16px 0 10px;
  font-size: 24px;
}

.error-page p {
  max-width: 44ch;
  margin: 0 auto 24px;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.8;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

@media (max-width: 760px) {
  .fact-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .about-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .join-step {
    grid-template-columns: 28px 1fr;
    gap: 12px;
  }
}

@media (max-width: 520px) {
  .fact-grid {
    grid-template-columns: 1fr;
  }

  .page-head {
    padding-top: calc(var(--nav-h) + 44px);
  }
}