:root {
  color-scheme: light;
  --bg: #ffffff;
  --text: #111111;
  --muted: #5b616e;
  --line: #d8dee8;
  --panel: #f7f9fb;
  --panel-strong: #eef3f7;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
  --code: #101820;
  --code-text: #e9f2f0;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

a {
  color: inherit;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.95em;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 22px 0;
}

.brand,
.nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--accent-strong);
}

.nav {
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a {
  text-decoration: none;
}

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

.nav-cta {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.82fr);
  gap: 48px;
  align-items: center;
  width: min(var(--max), calc(100% - 40px));
  min-height: 620px;
  margin: 0 auto;
  padding: 42px 0 72px;
}

.hero-copy {
  max-width: 690px;
  min-width: 0;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(4rem, 10vw, 8.5rem);
  line-height: 0.86;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.05rem;
}

.hero-lede,
.section-heading p,
.split p {
  color: var(--muted);
  font-size: 1.15rem;
}

.hero-lede {
  max-width: 640px;
  margin-bottom: 28px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  color: #ffffff;
}

.button.secondary {
  border: 1px solid var(--line);
  background: #ffffff;
}

.protocol-preview,
.install-panel {
  overflow: hidden;
  max-width: 100%;
  min-width: 0;
  border: 1px solid #1f2a33;
  border-radius: 8px;
  background: var(--code);
  box-shadow: 0 22px 70px rgb(16 24 32 / 16%);
}

.terminal-bar {
  display: flex;
  gap: 7px;
  padding: 14px 16px;
  border-bottom: 1px solid rgb(255 255 255 / 10%);
}

.terminal-bar span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #91a7a3;
}

pre {
  margin: 0;
  overflow-x: auto;
  padding: 24px;
  color: var(--code-text);
  font-size: 0.92rem;
  line-height: 1.65;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.section {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.role-grid article {
  min-height: 190px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.role-grid p,
.use-list {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(320px, 1fr);
  gap: 36px;
  align-items: center;
}

.install-panel {
  box-shadow: none;
}

.use-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 0;
  list-style: none;
}

.use-list li {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
}

.faq {
  max-width: 900px;
}

details {
  border-top: 1px solid var(--line);
}

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

summary {
  cursor: pointer;
  padding: 20px 0;
  font-weight: 750;
}

details p {
  max-width: 760px;
  color: var(--muted);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 860px) {
  .site-header,
  .hero,
  .section,
  .footer {
    width: calc(100vw - 64px);
  }

  .site-header,
  .nav,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    gap: 12px;
  }

  .hero,
  .split,
  .role-grid,
  .use-list {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    gap: 34px;
    padding-top: 30px;
  }

  h1 {
    font-size: clamp(3.2rem, 18vw, 5.2rem);
  }

  .hero-lede {
    width: 100%;
    max-width: 320px;
    font-size: 1.05rem;
    overflow-wrap: break-word;
  }

  pre {
    padding: 20px;
    font-size: 0.82rem;
  }

  .protocol-preview,
  .install-panel {
    max-width: 326px;
  }
}