@import url("https://fonts.googleapis.com/css2?family=Instrument+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@500;700&display=swap");

:root {
  --bg: #f6f0e8;
  --surface: #fffaf4;
  --surface-strong: #f1e6d7;
  --ink: #1f2a2e;
  --muted: #5f6c72;
  --line: #d7c7b4;
  --accent: #c85b2d;
  --accent-ink: #fff7f1;
  --shadow: 0 18px 45px rgba(31, 42, 46, 0.08);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: "Instrument Sans", sans-serif;
  line-height: 1.55;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cg fill='none' stroke='%23dbcdbb' stroke-width='1'%3E%3Cpath d='M20 20h40v40H20z'/%3E%3Cpath d='M96 36h28v28H96z'/%3E%3Ccircle cx='56' cy='114' r='6'/%3E%3Ccircle cx='118' cy='110' r='10'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 160px 160px;
}

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

img {
  display: block;
}

.site-shell {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 22px;
  margin-bottom: 26px;
  border: 1px solid rgba(95, 108, 114, 0.16);
  border-radius: 999px;
  background: rgba(255, 250, 244, 0.9);
  box-shadow: 0 10px 25px rgba(31, 42, 46, 0.05);
  backdrop-filter: saturate(110%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
}

.nav {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted);
  font-weight: 500;
}

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

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 28px;
  padding: 34px 0 24px;
  align-items: stretch;
}

.hero-copy,
.hero-board,
.feature-card,
.loop-step,
.scenario-card,
.spec-note,
.spec-block,
.install-card,
.footer {
  border: 1px solid rgba(95, 108, 114, 0.14);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-copy {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  padding: 42px;
}

.hero-copy::after {
  content: "";
  position: absolute;
  right: -24px;
  bottom: -24px;
  width: 160px;
  height: 160px;
  border: 1px solid rgba(200, 91, 45, 0.25);
  border-radius: 50%;
}

.hero-board {
  display: grid;
  gap: 16px;
  border-radius: var(--radius-xl);
  padding: 22px;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  line-height: 0.98;
  max-width: 10ch;
}

h2 {
  font-size: clamp(2rem, 4.2vw, 3rem);
  line-height: 1.02;
  max-width: 16ch;
}

h3 {
  font-size: 1.18rem;
  line-height: 1.15;
}

p,
li {
  text-wrap: pretty;
}

.hero-text,
.section-heading,
.spec-caption,
.footer p,
.feature-card p,
.loop-step p,
.scenario-card p,
.spec-note li,
.install-card li {
  color: var(--muted);
}

.hero-text {
  max-width: 34rem;
  margin: 18px 0 0;
  font-size: 1.1rem;
}

.install-command {
  display: inline-flex;
  align-items: center;
  margin-top: 24px;
  padding: 12px 16px;
  border: 1px solid rgba(95, 108, 114, 0.16);
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(31, 42, 46, 0.05);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.95rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
}

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

.button-secondary {
  border: 1px solid rgba(95, 108, 114, 0.18);
  background: #fff;
}

.signal-list,
.check-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.signal-list {
  display: grid;
  gap: 10px;
  color: var(--muted);
}

.signal-list li,
.check-list li {
  position: relative;
  padding-left: 18px;
}

.signal-list li::before,
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
}

.board-panel {
  border: 1px solid rgba(95, 108, 114, 0.14);
  border-radius: var(--radius-lg);
  padding: 18px;
  background: #ffffff;
}

.board-panel-accent {
  background: #fff5ec;
}

.panel-label,
.stage-chip,
.feature-index,
.loop-number {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.panel-label,
.stage-chip {
  color: var(--accent);
}

.flow-stage {
  margin-top: 12px;
}

.flow-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
}

.flow-card-vertical {
  flex-direction: column;
  align-items: stretch;
}

.flow-node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid rgba(95, 108, 114, 0.14);
  border-radius: 999px;
  background: #fff;
  font-weight: 600;
}

.flow-node-muted {
  color: var(--muted);
  border-style: dashed;
}

.flow-arrow {
  color: var(--accent);
  font-weight: 700;
}

.flow-arrow-down {
  text-align: center;
}

.spec-caption {
  margin-top: 16px;
}

.section {
  padding: 34px 0;
}

.section-band {
  padding: 34px 28px;
  border: 1px solid rgba(95, 108, 114, 0.14);
  border-radius: var(--radius-xl);
  background: rgba(255, 250, 244, 0.84);
}

.section-heading {
  display: grid;
  gap: 12px;
  margin-bottom: 22px;
}

.feature-grid,
.loop-grid,
.scenario-grid,
.install-guide,
.faq-list,
.install-grid {
  display: grid;
  gap: 18px;
}

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

.loop-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.install-guide,
.faq-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.loop-step,
.scenario-card,
.install-step-card,
.install-card,
.spec-note,
.faq-card {
  border-radius: var(--radius-lg);
  padding: 22px;
}

.feature-index,
.loop-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 38px;
  border-radius: 999px;
  background: #fff3ea;
  color: var(--accent);
}

.feature-card h3,
.loop-step h3,
.scenario-card h3,
.install-step-card h3,
.install-card h3,
.spec-note h3,
.faq-card h3 {
  margin-top: 16px;
}

.step-kicker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.spec-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 18px;
  align-items: start;
}

.spec-block {
  margin: 0;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  padding: 24px;
  background: #132225;
  color: #f9f2e8;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.92rem;
  line-height: 1.6;
}

.install-card pre {
  margin: 12px 0 0;
  overflow-x: auto;
  border-radius: var(--radius-md);
  padding: 16px;
  background: #132225;
  color: #f9f2e8;
}

.install-step-card pre {
  margin: 14px 0 0;
  overflow-x: auto;
  border-radius: var(--radius-md);
  padding: 16px;
  background: #132225;
  color: #f9f2e8;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 22px;
  border-radius: var(--radius-xl);
  padding: 22px 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted);
  font-weight: 600;
}

@media (max-width: 1080px) {
  .hero,
  .spec-layout,
  .feature-grid,
  .loop-grid,
  .scenario-grid,
  .install-guide,
  .faq-list,
  .install-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-shell {
    width: min(calc(100% - 20px), var(--max-width));
    padding-top: 14px;
  }

  .topbar,
  .footer {
    border-radius: 28px;
    padding: 18px;
  }

  .topbar,
  .footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-copy,
  .hero-board,
  .section-band {
    padding: 22px;
  }

  h1 {
    max-width: 12ch;
  }

  .nav {
    gap: 12px;
  }

  .button {
    width: 100%;
  }
}