:root {
  color-scheme: dark;
  --bg: #121317;
  --panel: #16181d;
  --panel-alt: #0d0e11;
  --text: #d8dce2;
  --muted: #9ca3af;
  --dim: #7d8590;
  --border: #2b2e36;
  --accent: #4ade80;
  --accent-text: #7dd3a8;
  --link: #6fa8dc;
  --accent-contrast: #121317;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f6f8;
  --panel: #ffffff;
  --panel-alt: #f0f1f4;
  --text: #20232a;
  --muted: #5b6270;
  --dim: #6b7280;
  --border: #d8dbe0;
  --accent: #16a34a;
  --accent-text: #15803d;
  --link: #2563eb;
  --accent-contrast: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

#features, #install, #changelog, #faq {
  scroll-margin-top: 80px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  font-size: 14px;
  line-height: 1.5;
  transition: background 0.15s ease, color 0.15s ease;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}
::-webkit-scrollbar-track {
  background: transparent;
}

a {
  color: var(--link);
}
a:hover {
  color: var(--accent);
}

.wrap {
  width: 100%;
  min-height: 100vh;
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 40px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  cursor: pointer;
}
.nav-title {
  font-weight: 700;
  letter-spacing: 0.5px;
  font-size: 16px;
  color: var(--accent);
}
.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
  font-size: 13px;
  flex-wrap: wrap;
}
.nav-links a {
  text-decoration: none;
  color: var(--text);
}
.nav-links a:hover {
  color: var(--accent);
}
.btn-github {
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 4px;
}
.theme-toggle {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  background: none;
  font-size: 14px;
  color: var(--text);
}

/* Hero */
.hero {
  text-align: center;
  padding: 100px 24px 80px;
  border-bottom: 1px solid var(--border);
}
.hero-kicker {
  font-size: 12px;
  color: var(--accent-text);
  margin-bottom: 16px;
}
.hero-title {
  font-size: 52px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.hero-sub {
  font-size: 17px;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 28px;
}
.hero-terminal {
  display: inline-block;
  text-align: left;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 20px;
  margin-bottom: 32px;
  font-size: 13px;
  color: var(--accent-text);
}
.cursor {
  border-right: 2px solid var(--accent);
  margin-left: 1px;
  animation: blinkCursor 0.9s step-end infinite;
}
@keyframes blinkCursor {
  0%, 49% { border-color: var(--accent); }
  50%, 100% { border-color: transparent; }
}
.hero-ctas {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  box-sizing: border-box;
  text-decoration: none;
  padding: 12px 22px;
  border-radius: 5px;
  font-size: 14px;
  line-height: 1.2;
  cursor: pointer;
  font-family: inherit;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
  border: 1px solid var(--accent);
}
.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
  background: none;
}

/* Demo */
.section {
  padding: 70px 24px;
  border-bottom: 1px solid var(--border);
}
.section-kicker {
  text-align: center;
  font-size: 11px;
  letter-spacing: 0.6px;
  color: var(--dim);
  margin-bottom: 10px;
}
.section-title {
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 36px;
}
.section-subtitle {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 44px;
}
.demo-frame {
  max-width: 1000px;
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
}
.demo-titlebar {
  display: flex;
  gap: 6px;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ef6a6a; }
.dot-yellow { background: #f4c95d; }
.dot-green { background: #4ade80; }
.demo-video {
  display: block;
  width: 100%;
  height: auto;
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}
.feature-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  min-height: 300px;
}
.feature-icon {
  font-size: 26px;
  margin-bottom: 12px;
}
.feature-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}
.feature-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}
.compare-card {
  border-color: var(--accent) !important;
}
.compare-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 10px;
}
.compare-table {
  display: grid;
  grid-template-columns: minmax(0, 48%) 1fr;
  column-gap: 12px;
  row-gap: 6px;
}
.compare-row {
  display: contents;
  color: var(--muted);
  font-size: 12.5px;
}
.compare-row span {
  padding: 3px 0;
}
.compare-row span:last-child {
  color: var(--accent);
  text-align: right;
}

/* Install */
.install-list {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.install-command {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 12.5px;
  color: var(--accent-text);
  white-space: pre-wrap;
  word-break: break-all;
}
.download-panel {
  border: 1px solid var(--accent);
  border-radius: 6px;
  overflow: hidden;
}
.download-panel-header {
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}
.download-panel-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 12px 12px;
}
.download-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--panel);
}
.download-card.recommended {
  border-color: var(--accent);
}
.download-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  gap: 12px;
  flex-wrap: wrap;
}
.download-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.download-shell {
  position: relative;
  display: none;
  border-top: 1px solid var(--border);
}
.download-card.open .download-shell {
  display: block;
}
.download-shell pre {
  margin: 0;
  padding: 14px 44px 14px 16px;
  background: var(--panel-alt);
  font-family: inherit;
  font-size: 12px;
  color: var(--accent-text);
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.6;
}
.download-copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  cursor: pointer;
  font-size: 11px;
  color: var(--dim);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 8px;
  background: var(--panel);
  font-family: inherit;
}
.download-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.4px;
  color: var(--accent-contrast);
  background: var(--accent);
  padding: 2px 6px;
  border-radius: 3px;
}
.download-btn {
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 5px;
  font-size: 12.5px;
  white-space: nowrap;
}
.download-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Changelog */
.changelog-wrap {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.changelog-kicker {
  font-size: 13px;
  font-weight: 700;
  color: var(--dim);
  letter-spacing: 0.4px;
  margin-bottom: 4px;
}
.changelog-entry {
  font-size: 12px;
  color: var(--muted);
}
.changelog-entry .version {
  color: var(--accent);
  font-weight: 700;
}
#changelog {
  padding: 44px 24px;
}

/* FAQ */
.faq-list {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.faq-question {
  padding: 14px 16px;
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  background: var(--panel);
  border: none;
  width: 100%;
  color: var(--text);
  font-family: inherit;
  text-align: left;
}
.faq-chevron {
  color: var(--dim);
}
.faq-answer {
  padding: 14px 16px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  display: none;
}
.faq-item.open .faq-answer {
  display: block;
}
.faq-toggle {
  text-align: center;
  font-size: 12px;
  color: var(--link);
  cursor: pointer;
  margin-top: 6px;
  background: none;
  border: none;
  font-family: inherit;
  width: 100%;
}

/* Footer */
.footer {
  padding: 40px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
}
.footer-copy {
  font-size: 12px;
  color: var(--dim);
}
.footer-links {
  display: flex;
  gap: 20px;
  font-size: 12.5px;
}
.footer-links a {
  text-decoration: none;
}

@media (max-width: 640px) {
  .hero-title { font-size: 36px; }
  .nav { padding: 14px 20px; }
  .section { padding: 50px 20px; }
}