:root {
  --bg: #f3f1ea;
  --surface: #fbfaf6;
  --ink: #202823;
  --ink-soft: #4d5a52;
  --accent: #1f4b6e;
  --accent-alt: #2f5d4b;
  --line: #cad4cc;
  --maxw: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1000px 500px at 15% -10%, rgba(31, 75, 110, 0.18), transparent 65%),
    radial-gradient(800px 400px at 100% 0%, rgba(47, 93, 75, 0.16), transparent 65%),
    linear-gradient(0deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.35)),
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 63px,
      rgba(32, 40, 35, 0.04) 64px,
      rgba(32, 40, 35, 0.04) 65px
    );
}

.site-header {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.2rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: "JetBrains Mono", monospace;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: rgba(251, 250, 246, 0.75);
}

nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

nav a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
}

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

main,
.site-footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1rem;
}

.hero {
  padding: 4.5rem 0 3rem;
}

.eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-alt);
}

h1,
h2,
h3 {
  font-family: "Libre Baskerville", Georgia, serif;
  line-height: 1.2;
  margin: 0 0 0.7rem;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  max-width: 18ch;
}

.lead {
  max-width: 65ch;
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  gap: 0.8rem;
  margin-top: 1.4rem;
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  border-radius: 999px;
  padding: 0.62rem 1rem;
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  background: var(--accent);
  color: #f8fbff;
}

.button.primary:hover {
  background: #173a55;
}

.button.ghost {
  color: var(--ink);
  border: 1px solid var(--line);
  background: rgba(251, 250, 246, 0.75);
}

.panel {
  margin-top: 1.6rem;
  padding: 1.3rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.principles,
.cards {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.principles article,
.card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.8rem;
  background: rgba(243, 241, 234, 0.6);
}

.card a {
  font-weight: 700;
  color: var(--accent);
}

.section-intro,
.credibility {
  color: var(--ink-soft);
}

.source-note {
  margin-top: 0.5rem;
}

.openclaw-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(243, 241, 234, 0.65);
  color: var(--ink-soft);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
}

.openclaw-emoji {
  font-size: 0.9rem;
  line-height: 1;
}

.openclaw-badge a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.openclaw-badge a:hover {
  text-decoration: underline;
}

.b1c3-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(243, 241, 234, 0.65);
  color: var(--ink-soft);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  margin-left: 0.5rem;
}

.b1c3-emoji {
  font-size: 0.9rem;
  line-height: 1;
}

.b1c3-badge a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.b1c3-badge a:hover {
  text-decoration: underline;
}

.proof-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.proof-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.8rem;
  background: rgba(243, 241, 234, 0.6);
}

blockquote.proof-result {
  margin: 1.2rem 0 0;
  padding: 0.9rem 1.2rem;
  border-left: 3px solid var(--accent);
  background: rgba(31, 75, 110, 0.07);
  border-radius: 0 8px 8px 0;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.88rem;
  color: var(--ink);
  line-height: 1.7;
}

.steps {
  padding-left: 1.2rem;
}

.site-footer {
  padding-top: 2rem;
  padding-bottom: 3rem;
}

.motif svg {
  width: min(360px, 100%);
  height: auto;
  transform: perspective(760px) rotateX(7deg) rotateY(-8deg);
  transform-origin: 50% 50%;
}

.motif .motif-spokes {
  filter: drop-shadow(0 1px 1px rgba(24, 34, 44, 0.24));
}

.motif .spoke {
  fill: url(#motifSpoke);
  opacity: 0.92;
}

.motif .node {
  stroke: #f2eee5;
  stroke-width: 1.6;
}

.motif .node-light {
  fill: url(#motifNodeLight);
  opacity: 0.9;
}

.motif .node-emphasis {
  fill: url(#motifCenter);
  stroke: #fbf8f0;
  stroke-width: 2;
  filter: drop-shadow(0 2px 2px rgba(18, 25, 32, 0.28));
}

.micro {
  font-family: "JetBrains Mono", monospace;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

a:focus-visible,
.button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: reveal 620ms ease-out forwards;
}

.hero {
  animation-delay: 0.1s;
}

#philosophy {
  animation-delay: 0.22s;
}

#projects {
  animation-delay: 0.34s;
}

#proof {
  animation-delay: 0.44s;
}

#collaborate {
  animation-delay: 0.54s;
}

.site-footer {
  animation-delay: 0.64s;
}

@keyframes reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 840px) {
  .principles,
  .cards,
  .proof-grid {
    grid-template-columns: 1fr;
  }

  .site-header {
    gap: 0.8rem;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 2.4rem;
  }
}