:root {
  --bg: #ede6db;
  --bg-soft: #f5efe6;
  --ink: #11141d;
  --ink-soft: #3d4352;
  --line: rgba(17, 20, 29, 0.14);
  --card: rgba(255, 252, 247, 0.8);
  --nav-card: rgba(255, 252, 247, 0.66);
  --accent: #bc5a38;
  --accent-2: #a4b574;
  --shadow: 0 24px 60px rgba(17, 20, 29, 0.08);
  --max-width: 1220px;
  --radius: 26px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(188, 90, 56, 0.15), transparent 32%),
    radial-gradient(circle at left 22%, rgba(164, 181, 116, 0.16), transparent 26%),
    linear-gradient(180deg, #f4ede3 0%, #ede6db 38%, #e9e1d4 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

body::before {
  background-image:
    linear-gradient(rgba(17, 20, 29, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 20, 29, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 85%);
}

body::after {
  background:
    radial-gradient(circle at 18% 20%, rgba(17, 20, 29, 0.06) 0 1.2px, transparent 1.3px),
    radial-gradient(circle at 74% 16%, rgba(17, 20, 29, 0.07) 0 1.4px, transparent 1.5px),
    radial-gradient(circle at 60% 72%, rgba(17, 20, 29, 0.06) 0 1px, transparent 1.1px);
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

button,
a,
summary {
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 30;
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
}

.skip-link:focus {
  top: 1rem;
}

.page-shell {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  padding-bottom: 3rem;
}

.section {
  margin-top: 4.25rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 0.95rem;
}

.site-header.is-scrolled {
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  max-width: 18rem;
}

.brand img {
  width: 100%;
  height: auto;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem;
}

.site-nav a {
  padding: 0.72rem 1rem;
  border: 1px solid rgba(17, 20, 29, 0.1);
  border-radius: 999px;
  text-decoration: none;
  background: var(--nav-card);
  backdrop-filter: blur(10px);
  font-family: "DIN Condensed", "Avenir Next Condensed", sans-serif;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.92rem;
}

.site-nav a.is-active,
.site-nav a:hover {
  border-color: rgba(188, 90, 56, 0.42);
  color: var(--accent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.95fr);
  gap: 1.5rem;
  align-items: stretch;
}

.hero-copy,
.visual-panel,
.fact-card,
.content-card,
.step-card,
.timeline-card,
.variant-card,
.faq-list details,
.sources-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 252, 247, 0.82), rgba(247, 241, 232, 0.88));
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 2.5rem;
}

.kicker,
.fact-label,
.timeline-date,
.sources-note-label {
  margin: 0;
  color: var(--accent);
  font-family: "DIN Condensed", "Avenir Next Condensed", sans-serif;
  font-size: 0.94rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
summary {
  margin: 0;
  font-family: "Futura", "Avenir Next", sans-serif;
  font-weight: 600;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 11ch;
  margin-top: 0.9rem;
  font-size: clamp(3.2rem, 6vw, 6rem);
  line-height: 0.94;
}

h2 {
  max-width: 18ch;
  margin-top: 0.8rem;
  font-size: clamp(2rem, 3.6vw, 3.25rem);
  line-height: 1;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.1;
}

p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.72;
}

.hero-dek {
  max-width: 58ch;
  margin-top: 1.15rem;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.3rem;
  padding: 0.95rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-family: "DIN Condensed", "Avenir Next Condensed", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.button-primary {
  background: var(--ink);
  color: #f7f2e8;
}

.button-primary:hover {
  background: #1c2130;
}

.button-secondary {
  border-color: rgba(17, 20, 29, 0.14);
  background: rgba(255, 255, 255, 0.42);
}

.button-secondary:hover {
  border-color: rgba(188, 90, 56, 0.34);
  color: var(--accent);
}

.hero-note {
  max-width: 52ch;
  margin-top: 1rem;
  font-size: 0.95rem;
}

.visual-panel {
  position: relative;
  overflow: hidden;
  padding: 1.25rem;
}

.visual-panel::after {
  content: "";
  position: absolute;
  right: -4rem;
  bottom: -4rem;
  width: 12rem;
  height: 12rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(188, 90, 56, 0.2), transparent 70%);
}

.signal-grid {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
  color: var(--ink);
  font-family: "DIN Condensed", "Avenir Next Condensed", sans-serif;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.visual-panel svg {
  width: 100%;
  height: auto;
}

.visual-panel .frame,
.visual-panel .node {
  fill: rgba(255, 252, 247, 0.7);
  stroke: rgba(17, 20, 29, 0.18);
  stroke-width: 2;
}

.visual-panel .node-issue {
  fill: rgba(188, 90, 56, 0.12);
}

.visual-panel .node-repo {
  fill: rgba(164, 181, 116, 0.18);
}

.visual-panel .node-agent {
  fill: rgba(17, 20, 29, 0.08);
}

.visual-panel .wire {
  fill: none;
  stroke: rgba(17, 20, 29, 0.4);
  stroke-width: 3;
  stroke-linecap: round;
}

.visual-panel .signal {
  fill: var(--accent);
}

.visual-panel text {
  fill: var(--ink);
  font-size: 18px;
  font-family: "Avenir Next", sans-serif;
}

.visual-caption {
  margin-top: 1rem;
  color: var(--ink);
}

.section-head {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 1.3rem;
}

.facts-grid,
.workflow-grid,
.timeline-list,
.variant-grid {
  display: grid;
  gap: 1rem;
}

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

.fact-card,
.content-card,
.step-card,
.timeline-card,
.variant-card {
  padding: 1.45rem;
}

.fact-card h3,
.content-card h3,
.step-card h3,
.timeline-card h3,
.variant-card h3 {
  margin-top: 0.6rem;
}

.fact-card p:last-child,
.content-card p + p,
.step-card p,
.timeline-card p:last-child,
.variant-card p {
  margin-top: 0.75rem;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

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

.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: rgba(17, 20, 29, 0.08);
  color: var(--accent);
  font-family: "DIN Condensed", "Avenir Next Condensed", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.12em;
}

.timeline-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.variant-card-warning {
  background: linear-gradient(180deg, rgba(188, 90, 56, 0.12), rgba(247, 241, 232, 0.92));
}

.faq-list {
  display: grid;
  gap: 0.9rem;
}

.faq-list details {
  padding: 1.2rem 1.25rem;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding-right: 2rem;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list details p {
  margin-top: 0.8rem;
}

.sources-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 1rem;
  padding: 1.35rem;
}

.source-list {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.8rem;
}

.source-list a {
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

.source-list a:hover {
  color: var(--accent);
}

.sources-note {
  display: grid;
  align-content: start;
  gap: 0.85rem;
  padding: 1.1rem;
  border-radius: 22px;
  background: rgba(17, 20, 29, 0.06);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  padding: 2rem 0 0.5rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.site-footer a:hover {
  color: var(--accent);
}

@media (max-width: 1080px) {
  .hero,
  .facts-grid,
  .workflow-grid,
  .timeline-list,
  .variant-grid,
  .sources-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-header {
    position: static;
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero,
  .two-column,
  .facts-grid,
  .workflow-grid,
  .timeline-list,
  .variant-grid,
  .sources-panel {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .visual-panel {
    padding: 1.5rem;
  }

  h1 {
    font-size: clamp(2.8rem, 11vw, 4.2rem);
  }

  h2 {
    max-width: none;
  }
}

@media (max-width: 520px) {
  .page-shell {
    width: min(var(--max-width), calc(100% - 1rem));
  }

  .site-nav a,
  .button {
    width: 100%;
  }

  .site-footer {
    flex-direction: column;
  }
}