:root {
  --bg: #16181d;
  --panel: #1e2127;
  --line: #2c303a;
  --text: #e8e6e0;
  --text-muted: #9a9890;
  --amber: #d9a441;
  --amber-dim: #a97e33;
  --max-width: 920px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

code, .skill-name, .brand-name {
  font-family: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
}

.wrap { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 16px; }
h1 { font-size: clamp(1.9rem, 4vw, 2.9rem); letter-spacing: -0.01em; max-width: 16ch; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.05rem; }

p { margin: 0 0 12px; color: var(--text-muted); }

/* Header */

.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(22, 24, 29, 0.92);
  backdrop-filter: blur(6px);
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 700;
}

.brand:hover { text-decoration: none; color: var(--text); }

.brand-mark {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.brand-name { letter-spacing: -0.01em; }

.header-nav { display: flex; align-items: center; gap: 20px; }

.nav-link { color: var(--text-muted); font-size: 0.95rem; }

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.lang-toggle button {
  background: transparent;
  border: 0;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 12px;
  cursor: pointer;
}

.lang-toggle button[aria-pressed="true"] {
  background: var(--amber);
  color: #1a1305;
}

.lang-toggle button:not([aria-pressed="true"]):hover { color: var(--text); }

/* Hero */

.hero { padding: 96px 0 64px; border-bottom: 1px solid var(--line); }

.kicker {
  font-family: ui-monospace, monospace;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--amber);
  margin: 0 0 16px;
}

.lead { font-size: 1.15rem; max-width: 60ch; }

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }

.hero-hint { margin-top: 18px; font-size: 0.85rem; color: var(--text-muted); }

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn:hover { text-decoration: none; }

.btn-primary { background: var(--amber); color: #1a1305; }
.btn-primary:hover { background: #f0bb5c; }

.btn-ghost { border: 1px solid var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }

/* Sections generally */

section { padding: 64px 0; border-top: 1px solid var(--line); }

.section-num {
  display: block;
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
  color: var(--amber);
  margin-bottom: 10px;
}

.section-intro { max-width: 60ch; margin-bottom: 32px; }

.why-section p { max-width: 68ch; }

blockquote {
  margin: 24px 0;
  padding: 18px 22px;
  border-left: 2px solid var(--amber);
  background: var(--panel);
  border-radius: 0 8px 8px 0;
  max-width: 68ch;
}

blockquote p { color: var(--text); font-style: italic; margin-bottom: 8px; }

blockquote cite { display: block; font-style: normal; font-size: 0.85rem; color: var(--text-muted); }

/* Method / interactive loop */

.dial-wrap { display: flex; justify-content: center; margin: 8px 0 32px; }
.dial-wrap svg { width: 240px; height: 240px; }

.loop-node { cursor: pointer; }
.loop-node:focus { outline: none; }
.loop-node:focus .loop-node-circle { stroke: var(--amber); stroke-width: 2; }

.loop-node-circle {
  fill: var(--panel);
  stroke: var(--line);
  stroke-width: 1.5;
}

.loop-node-number {
  font-family: ui-monospace, monospace;
  font-size: 13px;
  font-weight: 600;
  fill: var(--text-muted);
}

.loop-node.is-active .loop-node-circle {
  stroke: var(--amber);
  stroke-width: 2;
}

.loop-node.is-active .loop-node-number {
  fill: var(--amber);
}

#loop-badge-rect {
  fill: var(--amber);
}

#loop-badge-text {
  font-family: ui-monospace, monospace;
  font-size: 12px;
  font-weight: 700;
  fill: #1a1305;
}

.loop-detail {
  max-width: 52ch;
  margin: 0 auto;
  text-align: center;
}

.loop-detail h3 { color: var(--amber); margin-bottom: 8px; }
.loop-detail p { margin: 0; }

.loop-hint {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 20px;
}

.loop-source { margin-top: 8px; }

.loop-rows { list-style: none; margin: 0; padding: 0; }

.loop-row {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.loop-row:first-child { border-top: none; }
.loop-row h3 { margin: 0 0 4px; }
.loop-row p { margin: 0; font-size: 0.94rem; }

.trust-points {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.trust-points li {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Skills */

.skill-card-orchestrator {
  background: var(--panel);
  border: 1px solid var(--amber-dim);
  border-radius: 8px;
  padding: 22px 24px;
  margin-bottom: 24px;
}

.skill-tag {
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--amber);
  margin-bottom: 6px;
}

.skill-name {
  display: inline-block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--amber);
  margin-bottom: 10px;
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.skill-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 22px;
}

.skill-card p { font-size: 0.92rem; margin-bottom: 0; }

/* Install */

.install-block { margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--line); }

.code-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #0f1013;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  overflow-x: auto;
}

.code-block code { color: var(--amber); font-size: 0.88rem; white-space: nowrap; }

.copy-btn {
  flex-shrink: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--text-muted);
  border-radius: 6px;
  padding: 6px 12px;
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.copy-btn:hover { color: var(--text); border-color: var(--amber); }
.copy-btn.copied { color: var(--amber); border-color: var(--amber); }

.note { margin-top: 16px; font-size: 0.88rem; }

/* Footer */

.site-footer { border-top: 1px solid var(--line); padding: 32px 0; }

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-inner p { margin: 0; font-size: 0.88rem; }

.footer-links { display: flex; align-items: center; gap: 8px; color: var(--text-muted); }

/* Responsive */

@media (max-width: 860px) {
  .skill-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-points { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .hero { padding: 64px 0 48px; }
  .skill-grid { grid-template-columns: 1fr; }
  .dial-wrap svg { width: 200px; height: 200px; }
  .code-block { flex-direction: column; align-items: stretch; }
  .copy-btn { align-self: flex-start; }
}