:root {
  color-scheme: light;
  --bg: #f7f4ee;
  --surface: #fffaf1;
  --ink: #151515;
  --muted: #5c5a55;
  --line: #ded6c9;
  --accent: #116a62;
  --accent-strong: #0b4f49;
  --warm: #c24a22;
  --code: #20201d;
  --code-muted: #a7b0a3;
  --shadow: 0 24px 70px rgba(35, 30, 20, 0.12);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(255, 250, 241, 0.9), rgba(247, 244, 238, 0.98)),
    var(--bg);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(21, 21, 21, 0.08);
  background: rgba(247, 244, 238, 0.86);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0;
  gap: 24px;
}

.brand {
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover,
.text-link:hover {
  color: var(--accent-strong);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.7fr);
  align-items: center;
  width: min(1120px, calc(100% - 40px));
  min-height: calc(100vh - 74px);
  margin: 0 auto;
  padding: 72px 0 96px;
  gap: 64px;
}

.eyebrow,
.section-label {
  margin: 0 0 12px;
  color: var(--warm);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(3rem, 6.45vw, 5.8rem);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 22px;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.06rem;
  line-height: 1.2;
}

code {
  padding: 0.08em 0.24em;
  border-radius: 4px;
  background: rgba(17, 106, 98, 0.1);
  color: var(--accent-strong);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
}

.hero-text {
  max-width: 660px;
  color: var(--muted);
  font-size: clamp(1.15rem, 2vw, 1.35rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  margin-top: 34px;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid var(--ink);
  border-radius: 6px;
  font-weight: 750;
  text-decoration: none;
}

.button.primary {
  background: var(--ink);
  color: var(--surface);
}

.button.secondary {
  background: transparent;
  color: var(--ink);
}

.button:hover {
  transform: translateY(-1px);
}

.signal-panel {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: var(--code);
  color: #f7f4ee;
  box-shadow: var(--shadow);
}

.terminal-bar {
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  gap: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.terminal-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d9563f;
}

.terminal-bar span:nth-child(2) {
  background: #d6a837;
}

.terminal-bar span:nth-child(3) {
  background: #4bba6f;
}

.signal-panel dl {
  margin: 0;
  padding: 26px;
}

.signal-panel div + div {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.signal-panel dt {
  margin-bottom: 6px;
  color: #f4d36f;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82rem;
  font-weight: 800;
}

.signal-panel dd {
  margin: 0;
  color: var(--code-muted);
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 86px 0;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: 56px;
}

.copy-block {
  color: var(--muted);
  font-size: 1.08rem;
}

.feature-grid,
.tool-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.tool-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

article {
  min-height: 100%;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 250, 241, 0.78);
}

article p,
.principles p,
.steps p,
.footer p {
  margin-bottom: 0;
  color: var(--muted);
}

.contrast {
  width: 100%;
  max-width: none;
  padding: 82px max(20px, calc((100% - 1120px) / 2));
  background: #e8eadf;
}

.plain-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 14px;
  list-style: none;
}

.plain-list li {
  padding: 17px 18px;
  border-left: 4px solid var(--accent);
  background: rgba(255, 250, 241, 0.72);
  font-weight: 700;
}

.principles {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.principles p {
  padding: 22px;
  border-top: 3px solid var(--accent);
  background: rgba(255, 250, 241, 0.72);
  font-weight: 700;
}

.start {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
  align-items: start;
  gap: 56px;
}

.steps {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 14px;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  min-height: 72px;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 250, 241, 0.8);
}

.steps span {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  font-weight: 800;
}

.text-link {
  display: inline-block;
  grid-column: 2;
  width: fit-content;
  margin-top: -28px;
  color: var(--accent);
  font-weight: 800;
}

.footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 40px 0 58px;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
}

.footer a {
  font-weight: 800;
}

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

  .hero {
    min-height: auto;
    padding-top: 54px;
    gap: 42px;
  }

  .feature-grid,
  .tool-grid,
  .principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .text-link {
    grid-column: auto;
    margin-top: 0;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    width: min(100% - 28px, 1120px);
    gap: 10px;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.9rem;
  }

  .hero,
  .section,
  .footer {
    width: min(100% - 28px, 1120px);
  }

  .hero {
    padding: 42px 0 72px;
  }

  h1 {
    font-size: clamp(2.3rem, 10.5vw, 2.65rem);
  }

  h2 {
    font-size: clamp(2rem, 11vw, 2.8rem);
  }

  .actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .feature-grid,
  .tool-grid,
  .principles {
    grid-template-columns: 1fr;
  }

  .contrast {
    padding-right: 14px;
    padding-left: 14px;
  }
}