:root {
  color-scheme: dark;
  --bg: #0d1117;
  --surface: #161b22;
  --surface-2: #1f2630;
  --inset: #090d13;
  --border: #30363d;
  --text: #f0f3f6;
  --muted: #8b949e;
  --dim: #c9d1d9;
  --green: #3fb950;
  --cyan: #39c5cf;
  --yellow: #d29922;
  --red: #f85149;
  --accent: #58a6ff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 32px;
  background: rgba(13, 17, 23, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand img {
  border-radius: 8px;
}

.brand-z {
  color: var(--muted);
}

nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--dim);
  font-size: 14px;
}

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

.hero {
  position: relative;
  min-height: calc(100vh - 168px);
  display: grid;
  grid-template-columns: minmax(320px, 0.76fr) minmax(520px, 1.24fr);
  align-items: center;
  gap: 48px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 44px 32px 64px;
}

.hero::after {
  content: "";
  position: absolute;
  left: 32px;
  right: 32px;
  bottom: 20px;
  height: 1px;
  background: var(--border);
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 560px;
}

.eyebrow,
.section-heading span,
.feature-copy span,
.install span {
  display: block;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 14px;
  font-size: clamp(64px, 10vw, 128px);
  line-height: 0.9;
  letter-spacing: 0;
}

.hero-z {
  color: var(--muted);
}

.hero-copy p {
  max-width: 520px;
  color: var(--dim);
  font-size: 20px;
}

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

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
}

.primary-action {
  background: var(--green);
  color: #06120a;
}

.secondary-action {
  border: 1px solid var(--border);
  color: var(--dim);
}

.secondary-action:hover {
  color: var(--text);
  border-color: #56616e;
}

.product-preview {
  position: relative;
  min-width: 0;
  border: 1px solid #3a4150;
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 28px 72px rgba(0, 0, 0, 0.38);
}

.window-chrome {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 14px;
  gap: 8px;
  background: #1c222b;
  border-bottom: 1px solid var(--border);
}

.window-chrome > span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.window-chrome > span:nth-child(1) {
  background: var(--red);
}

.window-chrome > span:nth-child(2) {
  background: var(--yellow);
}

.window-chrome > span:nth-child(3) {
  background: var(--green);
}

.mode-switch {
  display: grid;
  grid-template-columns: repeat(3, 64px);
  gap: 2px;
  margin-left: auto;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--inset);
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.mode-switch button {
  border: 0;
  padding: 3px 0;
  border-radius: 5px;
  background: transparent;
  color: inherit;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.mode-switch button.active {
  background: #263242;
  color: var(--text);
}

.mode-switch button:not(.active):hover {
  color: var(--text);
}

.app-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 470px;
}

.preview-mode {
  display: none;
}

.preview-mode.active {
  display: grid;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  background: #111820;
  border-right: 1px solid var(--border);
}

.section-title {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
}

.session {
  padding: 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid transparent;
}

.session.active {
  background: #1b2836;
  border-color: #35506b;
}

.session strong,
.session span {
  display: block;
}

.session strong {
  color: var(--text);
  font-size: 14px;
}

.session span {
  color: var(--muted);
  font-size: 12px;
}

.usage {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
}

.usage div {
  margin-bottom: 8px;
  font-weight: 800;
  font-size: 11px;
}

.usage label {
  display: flex;
  justify-content: space-between;
  margin: 6px 0 4px;
}

meter {
  display: block;
  width: 100%;
  height: 6px;
}

meter::-webkit-meter-bar {
  background: var(--inset);
  border: 0;
  border-radius: 999px;
}

meter::-webkit-meter-optimum-value {
  background: var(--green);
  border-radius: 999px;
}

.terminal-pane {
  min-width: 0;
  background: var(--inset);
}

.tabs {
  display: flex;
  height: 34px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
}

.tab {
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  border-right: 1px solid var(--border);
}

.tab.active {
  color: var(--text);
  background: var(--inset);
  box-shadow: inset 0 2px 0 var(--accent);
}

.terminal-grid {
  padding: 24px;
  font: 14px/1.6 "SF Mono", Menlo, Consolas, monospace;
  color: var(--dim);
}

.terminal-grid p {
  margin: 0 0 8px;
}

.terminal-grid pre {
  margin: 16px 0 0;
  white-space: pre-wrap;
}

.code-grid pre {
  margin-top: 0;
}

.line-no {
  color: var(--muted);
}

.prompt {
  color: var(--cyan);
}

.ok,
.add {
  color: var(--green);
}

.del {
  color: var(--red);
}

.workspace,
.features,
.install {
  max-width: 1180px;
  margin: 0 auto;
  padding: 84px 32px;
}

.section-heading,
.feature-copy,
.install {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 56px;
  align-items: start;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.02;
  letter-spacing: 0;
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 34px;
}

.mode-grid article {
  min-height: 220px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.mode-icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: 18px;
  border-radius: 8px;
  background: #263242;
  color: var(--cyan);
  font-weight: 800;
}

h3 {
  margin-bottom: 8px;
  font-size: 20px;
}

.mode-grid p,
.feature-list p,
.install p {
  color: var(--muted);
}

.features {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 34px;
}

.feature-list div {
  padding: 18px 0;
  border-top: 1px solid var(--border);
}

.install {
  align-items: center;
}

.download-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--inset);
}

.download-card img {
  border-radius: 12px;
}

.download-card h3,
.download-card p {
  margin: 0;
}

.download-card p {
  color: var(--muted);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 32px 48px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  font-size: 14px;
}

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

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: calc(100vh - 156px);
    padding-top: 44px;
  }

  .hero-copy {
    max-width: 720px;
  }

  .product-preview {
    width: 100%;
  }

  .section-heading,
  .feature-copy,
  .install {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 14px 18px;
  }

  nav {
    width: 100%;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 2px;
    font-size: 13px;
  }

  .hero,
  .workspace,
  .features,
  .install {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero {
    gap: 28px;
  }

  .hero-copy p {
    font-size: 17px;
  }

  .mode-switch {
    grid-template-columns: repeat(3, 54px);
  }

  .app-shell {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .sidebar {
    display: none;
  }

  .terminal-grid {
    padding: 18px;
    font-size: 12px;
  }

  .mode-grid,
  .feature-list {
    grid-template-columns: 1fr;
  }

  .download-card {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .download-card .primary-action {
    grid-column: 1 / -1;
    width: 100%;
  }

  footer {
    flex-direction: column;
    padding-left: 18px;
    padding-right: 18px;
  }
}

@media (max-width: 420px) {
  .window-chrome {
    padding-left: 10px;
  }

  .window-chrome > span {
    width: 10px;
    height: 10px;
  }

  .mode-switch {
    grid-template-columns: repeat(3, 43px);
    font-size: 10px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-action,
  .secondary-action {
    width: 100%;
  }
}