* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --bg: #f4f5f2;
  --panel: #ffffff;
  --panel-soft: #f8f8f5;
  --ink: #20231f;
  --muted: #687067;
  --line: #dfe3dc;
  --green: #2f7d5c;
  --blue: #356f9f;
  --amber: #ad7418;
  --red: #ad433d;
  --shadow: 0 18px 50px rgba(31, 41, 34, 0.09);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 44px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
  gap: 20px;
  align-items: stretch;
  min-height: 420px;
  padding: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(47, 125, 92, 0.14), rgba(53, 111, 159, 0.1)),
    var(--panel);
  box-shadow: var(--shadow);
}

.eyebrow,
.panel-label,
.card-topline span,
.note-panel span,
.roadmap-item span {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 4px 9px;
  border: 1px solid rgba(47, 125, 92, 0.22);
  border-radius: 999px;
  background: rgba(47, 125, 92, 0.08);
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
}

.hero h1 {
  max-width: 780px;
  margin: 70px 0 18px;
  font-size: clamp(42px, 7vw, 86px);
  line-height: 0.96;
  letter-spacing: 0;
}

.subtitle {
  max-width: 720px;
  margin: 0;
  color: #3f4a40;
  font-size: 22px;
}

.hero-panel,
.section,
.note-panel,
.roadmap-panel,
.rule-panel,
.check-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.hero-panel {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 26px;
}

.hero-panel ul {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.hero-panel li {
  padding: 13px 0;
  border-top: 1px solid var(--line);
  color: #394039;
}

.section {
  margin-top: 22px;
  padding: 28px;
  box-shadow: 0 12px 34px rgba(31, 41, 34, 0.05);
}

.section-heading {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 22px;
}

.section-heading.compact {
  margin-bottom: 18px;
}

.section-heading > span {
  display: grid;
  place-items: center;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: #20231f;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}

.section-heading h2 {
  margin: 0;
  font-size: 28px;
  letter-spacing: 0;
}

.section-heading p {
  margin: 4px 0 0;
  color: var(--muted);
}

.architecture-grid,
.layer-grid,
.executor-grid,
.label-grid,
.copy-grid {
  display: grid;
  gap: 14px;
}

.logic-diagram {
  margin-bottom: 18px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
  overflow: hidden;
}

.hub-diagram {
  background:
    radial-gradient(circle at 50% 48%, rgba(53, 111, 159, 0.14), transparent 30%),
    linear-gradient(135deg, rgba(47, 125, 92, 0.08), rgba(173, 116, 24, 0.06)),
    #fbfcfa;
}

.hub-svg {
  display: block;
  width: 100%;
  height: auto;
  min-height: 500px;
}

.hub-flow {
  fill: none;
  stroke: #33403a;
  stroke-width: 3;
  stroke-linecap: round;
  opacity: 0.74;
}

.accent-flow {
  stroke: var(--blue);
  stroke-width: 3.5;
}

.review-flow {
  stroke: var(--green);
  stroke-dasharray: 8 8;
}

.hub-node rect {
  fill: rgba(255, 255, 255, 0.92);
  stroke: rgba(53, 111, 159, 0.22);
  stroke-width: 1.4;
  filter: url(#hubShadow);
}

.node-chris rect {
  fill: #fffaf0;
  stroke: rgba(173, 116, 24, 0.32);
}

.node-hermes rect {
  fill: #f1f8f4;
  stroke: rgba(47, 125, 92, 0.38);
}

.node-agent-1 rect,
.node-agent-2 rect,
.node-agent-3 rect {
  fill: #f5f3ff;
  stroke: rgba(92, 80, 180, 0.3);
}

.node-agent-2 rect {
  fill: #f7f5ff;
}

.node-agent-3 rect {
  fill: #f4f2fb;
}

.node-kicker,
.hub-kicker {
  fill: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.node-title {
  fill: var(--ink);
  font-size: 22px;
  font-weight: 800;
}

.node-caption {
  fill: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.linear-hub circle:first-child {
  fill: url(#linearHubGradient);
  stroke: rgba(53, 111, 159, 0.32);
  stroke-width: 2;
  filter: url(#hubShadow);
}

.hub-ring {
  fill: none;
  stroke: rgba(47, 125, 92, 0.24);
  stroke-width: 1.5;
  stroke-dasharray: 7 9;
}

.hub-title {
  fill: #1d343a;
  font-size: 44px;
  font-weight: 900;
}

.hub-subtitle {
  fill: var(--blue);
  font-size: 18px;
  font-weight: 800;
}

.hub-caption {
  fill: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.flow-label rect {
  fill: rgba(255, 255, 255, 0.9);
  stroke: rgba(32, 35, 31, 0.1);
}

.flow-label text {
  fill: #344039;
  font-size: 13px;
  font-weight: 800;
}

.asset-pill rect {
  fill: rgba(255, 255, 255, 0.9);
  stroke-width: 1.5;
}

.asset-pill text {
  fill: #344039;
  font-size: 15px;
  font-weight: 900;
}

.context-pill rect {
  stroke: rgba(47, 125, 92, 0.26);
}

.feedback-label rect {
  fill: #eef4f7;
  stroke: rgba(53, 111, 159, 0.2);
}

.review-label rect {
  fill: #eef6f1;
  stroke: rgba(47, 125, 92, 0.2);
}

.hub-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border-top: 1px solid var(--line);
  background: var(--line);
}

.hub-summary > div {
  padding: 18px;
  background: rgba(255, 255, 255, 0.78);
}

.hub-summary span {
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
}

.hub-summary strong {
  display: block;
  margin-top: 7px;
  color: var(--ink);
  font-size: 16px;
}

.hub-summary p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.architecture-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

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

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

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

.architecture-card,
.layer-card,
.executor-card,
.label-card,
.state-card,
.template-card,
.setup-step,
.copy-card,
.routine-item,
.roadmap-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
}

.architecture-card {
  min-height: 164px;
  padding: 18px;
}

.label-card {
  padding: 18px;
}

.label-card h3 {
  margin: 0 0 16px;
  font-size: 18px;
  letter-spacing: 0;
}

.label-list {
  display: grid;
  gap: 12px;
}

.label-row {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.label-dot {
  width: 10px;
  height: 10px;
  margin-top: 5px;
  border-radius: 50%;
}

.label-row strong {
  display: block;
  font-size: 15px;
}

.label-row p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.architecture-card span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.architecture-card h3,
.layer-card h3,
.executor-card h3,
.state-card h3,
.template-section h3,
.setup-step h3,
.copy-card h3,
.routine-item h3 {
  margin: 10px 0 8px;
  font-size: 18px;
  letter-spacing: 0;
}

.architecture-card p,
.layer-card p,
.executor-card p,
.state-card p,
.template-section p,
.setup-step p,
.copy-card p,
.routine-item p,
.note-panel p,
.roadmap-item li {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.flow-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.flow-step {
  padding: 14px;
  border-radius: 8px;
  background: #eef3f1;
}

.flow-step strong {
  display: block;
  color: var(--green);
  font-size: 12px;
}

.flow-step p {
  margin: 6px 0 0;
  color: #3f4840;
  font-size: 13px;
}

.layer-card,
.executor-card {
  padding: 20px;
}

.card-topline {
  min-height: 28px;
}

.layer-card ul,
.executor-card ul,
.rule-panel ul,
.compact-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.layer-card li,
.executor-card li,
.rule-panel li,
.compact-list li {
  position: relative;
  padding: 8px 0 8px 18px;
  border-top: 1px solid var(--line);
  color: #3d443d;
  font-size: 14px;
}

.layer-card li::before,
.executor-card li::before,
.rule-panel li::before,
.compact-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: 18px;
  align-items: start;
}

.state-timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.state-card {
  min-height: 170px;
  padding: 16px;
}

.state-index {
  color: var(--amber);
  font-size: 12px;
  font-weight: 800;
}

.state-card strong {
  display: block;
  margin-top: 12px;
  color: var(--green);
  font-size: 13px;
}

.exception-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.exception-pill {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 8px;
  background: #fff5ec;
  color: #6b4a20;
}

.exception-pill strong {
  color: var(--amber);
}

.exception-pill span {
  font-size: 13px;
}

.rule-panel,
.roadmap-panel,
.note-panel,
.check-panel {
  padding: 20px;
}

.rule-panel h3,
.roadmap-panel h3,
.check-panel h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

.template-card {
  overflow: hidden;
}

.template-section {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 18px;
  border-top: 1px solid var(--line);
}

.template-section:first-child {
  border-top: 0;
}

.template-section h3 {
  margin: 0;
  color: var(--blue);
}

.note-panel {
  background: #eff4f7;
}

.setup-sequence {
  display: grid;
  gap: 10px;
}

.setup-step {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  padding: 16px;
  background: #fbfcfa;
}

.setup-marker {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: #eff4f7;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.setup-step span {
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.setup-step h3 {
  margin: 4px 0 6px;
}

.check-panel {
  background: #f7f8f4;
}

.check-panel ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-panel li {
  position: relative;
  padding: 12px 0 12px 22px;
  border-top: 1px solid var(--line);
  color: #394039;
  font-size: 14px;
}

.check-panel li:first-child {
  border-top: 0;
}

.check-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--amber);
}

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

.copy-card {
  display: flex;
  min-height: 360px;
  flex-direction: column;
  overflow: hidden;
  background: #fbfcfa;
}

.copy-card-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.copy-card h3 {
  margin: 0 0 6px;
}

.copy-button {
  min-width: 72px;
  height: 36px;
  border: 1px solid rgba(53, 111, 159, 0.28);
  border-radius: 8px;
  background: #eef4f7;
  color: var(--blue);
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}

.copy-button:hover,
.copy-button.is-copied {
  background: var(--blue);
  color: #fff;
}

.copy-card pre {
  flex: 1;
  margin: 0;
  padding: 18px;
  overflow: auto;
  background: #20231f;
  color: #f4f7ef;
  font-size: 13px;
  line-height: 1.55;
}

.copy-card code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  white-space: pre;
}

.executor-card h4 {
  margin: 16px 0 0;
  color: var(--ink);
  font-size: 13px;
  text-transform: uppercase;
}

.routine-list {
  display: grid;
  gap: 10px;
}

.routine-item {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 16px;
  padding: 16px;
}

.routine-item time {
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
}

.routine-item h3 {
  margin-top: 0;
}

.roadmap-item {
  padding: 14px;
  margin-top: 10px;
}

.roadmap-item:first-child {
  margin-top: 0;
}

.roadmap-item h4 {
  margin: 10px 0 0;
  font-size: 16px;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  padding: 26px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.error-state {
  margin-top: 28px;
}

@media (max-width: 980px) {
  .hero,
  .split-section {
    grid-template-columns: 1fr;
  }

  .architecture-grid,
  .flow-strip,
  .state-timeline,
  .executor-grid,
  .label-grid,
  .copy-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .layer-grid {
    grid-template-columns: 1fr;
  }

  .hub-svg {
    min-width: 920px;
  }

  .logic-diagram {
    overflow-x: auto;
  }

  .hub-summary {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 20px, 1180px);
    padding-top: 10px;
  }

  .hero,
  .section {
    padding: 18px;
  }

  .hero {
    min-height: auto;
  }

  .hero h1 {
    margin-top: 56px;
    font-size: 42px;
  }

  .subtitle {
    font-size: 17px;
  }

  .architecture-grid,
  .flow-strip,
  .state-timeline,
  .exception-row,
  .executor-grid,
  .label-grid,
  .copy-grid {
    grid-template-columns: 1fr;
  }

  .template-section,
  .setup-step,
  .copy-card-header,
  .routine-item {
    grid-template-columns: 1fr;
  }
}