body.landing {
  overflow-x: hidden;
}
body.landing .wrap {
  padding-top: 0;
  padding-bottom: 0;
}
body.landing .ambient::before {
  display: none;
}
.ambient-blob {
  position: absolute;
  width: 58vw;
  height: 58vw;
  top: -16%;
  left: -14%;
  background: radial-gradient(circle, rgba(149, 100, 0, 0.038) 0%, transparent 70%);
  will-change: transform;
}

.landing-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 246, 243, 0.84);
  backdrop-filter: blur(12px);
}
.landing-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}
.landing-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.landing-mark svg {
  display: block;
}
.landing-bar .meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.landing-hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
  min-height: calc(100vh - 64px);
  padding: 96px 0 120px;
}
.landing-kicker {
  margin: 0 0 18px;
}
.landing-hero h1 {
  font-family: var(--serif);
  font-size: clamp(44px, 6.4vw, 76px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin: 0 0 22px;
}
.landing-hero h1 em {
  font-style: italic;
  font-weight: 400;
}
.hero-line {
  display: block;
}
.landing-hero .hero-copy {
  margin: 0 0 28px;
  color: var(--text-muted);
  font-size: 16px;
  max-width: 28em;
  line-height: 1.6;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}
.hero-cta .hint {
  font-size: 13px;
  color: var(--text-muted);
}

.os-window {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
}
.os-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: #f9f9f8;
}
.os-dots {
  display: flex;
  gap: 6px;
}
.os-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e0e0e0;
}
.os-title {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
}
.os-body {
  margin: 0;
  padding: 20px 18px 24px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.65;
  color: var(--text);
  background: var(--surface);
  overflow: auto;
}
.os-body .tok-key {
  color: var(--pale-yellow-text);
}
.os-body .tok-string {
  color: var(--pale-green-text);
}
.os-body .tok-number {
  color: var(--danger);
}

.landing-section {
  padding: 96px 0;
  border-top: 1px solid var(--line);
}
.landing-section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 32px;
}
.landing-section-head h2 {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0;
}
.landing-section-head p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  max-width: 28em;
}

.note-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 16px;
}
.note-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px 28px 32px;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.note-card:first-child {
  background: #f9f9f8;
}
.note-icon {
  margin-bottom: 28px;
  color: var(--text);
}
.note-card h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 8px;
}
.note-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
}

.landing-foot {
  border-top: 1px solid var(--line);
  padding: 28px 0 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.landing-foot p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
}

@media (max-width: 860px) {
  .landing-hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 56px 0 72px;
    gap: 36px;
  }
  .note-grid {
    grid-template-columns: 1fr;
  }
  .landing-section {
    padding: 64px 0;
  }
  .landing-section-head {
    flex-direction: column;
    align-items: flex-start;
  }
}