:root {
  --ri-bg: #0a0a0a;
  --ri-surface: #141414;
  --ri-border: #262626;
  --ri-accent: #ffffff;
  --ri-text: #ededed;
  --ri-muted: #a1a1a1;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--ri-bg);
  color: var(--ri-text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: var(--ri-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  display: block;
  max-width: 100%;
}

code {
  color: var(--ri-text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.92em;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.92);
  border-bottom: 1px solid var(--ri-border);
  backdrop-filter: blur(16px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 32px;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.nav-brand:hover {
  text-decoration: none;
}

.nav-icon {
  width: 38px;
  height: 38px;
  border: 1px solid var(--ri-border);
  border-radius: 10px;
  object-fit: cover;
}

.nav-logo {
  color: var(--ri-text);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 16px;
  color: var(--ri-muted);
  border: 1px solid transparent;
  border-radius: 5px;
  font-size: 14px;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.nav-links a:hover {
  color: var(--ri-text);
  border-color: var(--ri-border);
  text-decoration: none;
}

.nav-links .nav-install {
  margin-left: 8px;
  background: var(--ri-accent);
  color: var(--ri-bg);
  border-color: var(--ri-accent);
  font-weight: 700;
}

.nav-links .nav-install:hover {
  background: var(--ri-text);
  color: var(--ri-bg);
  border-color: var(--ri-text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px 12px;
  background: none;
  border: 1px solid var(--ri-border);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ri-text);
}

.page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 64px 32px;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 64px;
}

.hero-eyebrow,
.section-kicker {
  margin-bottom: 10px;
  color: var(--ri-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-title {
  margin-bottom: 16px;
  font-size: clamp(40px, 5vw, 58px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.hero-tagline {
  margin-bottom: 24px;
  color: var(--ri-accent);
  font-size: 20px;
}

.hero-description {
  color: var(--ri-muted);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  background: var(--ri-surface);
  color: var(--ri-text);
  border: 1px solid var(--ri-border);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.hero-button:hover {
  color: var(--ri-accent);
  border-color: var(--ri-accent);
  text-decoration: none;
}

.hero-button-primary {
  background: var(--ri-accent);
  color: var(--ri-bg);
  border-color: var(--ri-accent);
}

.hero-button-primary:hover {
  background: var(--ri-text);
  color: var(--ri-bg);
}

.hero-visual {
  padding: 24px;
  background: var(--ri-surface);
  border: 1px solid var(--ri-border);
  border-radius: 12px;
}

.bot-preview {
  overflow: hidden;
  background: var(--ri-bg);
  border: 1px solid var(--ri-border);
  border-radius: 10px;
}

.bot-preview-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px;
  border-bottom: 1px solid var(--ri-border);
}

.bot-preview-header img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
}

.bot-preview-header div {
  display: grid;
}

.bot-preview-header strong {
  font-size: 15px;
}

.bot-preview-header span {
  color: var(--ri-muted);
  font-size: 12px;
}

.command-list {
  display: grid;
  gap: 10px;
  padding: 16px;
}

.command-item {
  display: grid;
  gap: 3px;
  padding: 14px;
  background: var(--ri-surface);
  border: 1px solid var(--ri-border);
  border-radius: 8px;
}

.command-item span {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  font-weight: 700;
}

.command-item small {
  color: var(--ri-muted);
  font-size: 12px;
}

.content-section {
  margin-top: 96px;
  scroll-margin-top: 96px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 32px;
}

.section-title {
  margin-bottom: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ri-border);
  font-size: 24px;
  font-weight: 700;
}

.section-description {
  color: var(--ri-muted);
  line-height: 1.7;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card,
.update-card,
.planned-card,
.terms-card {
  background: var(--ri-surface);
  border: 1px solid var(--ri-border);
  border-radius: 12px;
  transition: border-color 0.2s ease;
}

.feature-card:hover,
.update-card:hover,
.planned-card:hover,
.terms-card:hover {
  border-color: var(--ri-accent);
}

.feature-card {
  padding: 32px;
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  border: 1px solid var(--ri-border);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  font-weight: 700;
}

.feature-title {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 600;
}

.feature-description {
  color: var(--ri-muted);
  font-size: 14px;
  line-height: 1.6;
}

.timeline {
  display: grid;
  gap: 16px;
}

.update-card {
  padding: 28px;
}

.update-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.update-meta time,
.update-meta span,
.planned-status {
  color: var(--ri-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.update-card h3,
.planned-card h3,
.terms-card h3 {
  margin-bottom: 10px;
  font-size: 18px;
}

.update-card p,
.update-card li,
.planned-card p,
.terms-card p {
  color: var(--ri-muted);
  font-size: 14px;
  line-height: 1.7;
}

.update-card ul {
  display: grid;
  gap: 8px;
  padding-left: 20px;
}

.planned-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  padding: 32px;
}

.planned-status {
  display: inline-block;
  margin-bottom: 14px;
}

.planned-number {
  color: var(--ri-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 32px;
  font-weight: 700;
}

.terms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.terms-card {
  display: flex;
  gap: 18px;
  padding: 28px;
}

.terms-card > span {
  color: var(--ri-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  font-weight: 700;
}

.cta-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin-top: 96px;
  padding: 36px;
  background: var(--ri-surface);
  border: 1px solid var(--ri-border);
  border-radius: 16px;
}

.cta-section h2 {
  margin-bottom: 8px;
  font-size: 28px;
  line-height: 1.25;
}

.cta-section p {
  color: var(--ri-muted);
}

.cta-actions {
  display: flex;
  flex-shrink: 0;
  gap: 12px;
}

.footer {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 32px;
  color: var(--ri-muted);
  border-top: 1px solid var(--ri-border);
  font-size: 14px;
  text-align: center;
}

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

@media (max-width: 900px) {
  .features-grid,
  .terms-grid {
    grid-template-columns: 1fr;
  }

  .cta-section {
    align-items: flex-start;
    flex-direction: column;
  }

  .cta-actions {
    width: 100%;
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .nav-inner {
    padding: 14px 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 8px;
    padding: 16px;
    background: var(--ri-bg);
    border-bottom: 1px solid var(--ri-border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 16px;
  }

  .nav-links .nav-install {
    margin-left: 0;
    text-align: center;
  }

  .page {
    padding: 32px 16px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-title {
    font-size: 38px;
  }

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

  .hero-button,
  .cta-actions .hero-button {
    width: 100%;
  }

  .content-section,
  .cta-section {
    margin-top: 64px;
  }

  .feature-card,
  .update-card,
  .planned-card,
  .terms-card {
    padding: 24px;
  }

  .planned-card {
    flex-direction: column-reverse;
    gap: 16px;
  }

  .cta-section {
    padding: 24px;
  }

  .footer {
    flex-direction: column;
  }
}