:root {
  --ink: #122025;
  --muted: #617178;
  --surface: #ffffff;
  --canvas: #f2f6f5;
  --line: #d8e2df;
  --brand: #087f78;
  --brand-dark: #075a57;
  --brand-soft: #dff4f0;
  --violet: #6750a4;
  --amber: #bd7b00;
  --danger: #b42318;
  --success: #067647;
  --shadow: 0 14px 40px rgba(22, 50, 54, .09);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--canvas); color: var(--ink); }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }

.shell { min-height: 100vh; display: flex; flex-direction: column; }
.topbar {
  min-height: 72px;
  padding: 10px clamp(16px, 3vw, 48px);
  display: flex;
  align-items: center;
  gap: 24px;
  background: rgba(255,255,255,.95);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 245px; }
.brand-mark {
  display: grid; place-items: center; width: 44px; height: 44px;
  border-radius: 13px; background: var(--brand); color: white; font-weight: 800;
}
.brand strong, .brand small { display: block; }
.brand small { color: var(--muted); font-size: 11px; margin-top: 2px; }
.main-nav { display: flex; align-items: center; gap: 4px; flex: 1; }
.main-nav a { padding: 9px 10px; border-radius: 9px; font-size: 14px; color: #43545a; }
.main-nav a:hover, .main-nav a.active { background: var(--brand-soft); color: var(--brand-dark); }
.main-nav .legacy-link { border: 1px solid var(--line); }
.persona-control { display: grid; gap: 3px; font-size: 10px; color: var(--muted); }
.persona-control select { border: 1px solid var(--line); border-radius: 8px; padding: 6px 26px 6px 8px; background: white; }
.mobile-menu { display: none; }

main { width: min(1240px, calc(100% - 32px)); margin: 0 auto; flex: 1; padding: 42px 0 72px; }
footer { padding: 22px clamp(16px, 3vw, 48px); background: #10282a; color: #c7d8d8; display: flex; justify-content: space-between; font-size: 13px; }

.hero { padding: clamp(28px, 6vw, 72px); border-radius: 28px; background: linear-gradient(135deg, #0d5d5b, #0a8780 58%, #71c8b6); color: white; box-shadow: var(--shadow); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px; border-radius: 999px; background: rgba(255,255,255,.15); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.hero h1 { max-width: 850px; font-size: clamp(38px, 7vw, 72px); line-height: 1.02; margin: 22px 0; letter-spacing: -.045em; }
.hero p { max-width: 700px; font-size: clamp(17px, 2vw, 21px); line-height: 1.65; color: #e6fffa; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { border: 0; border-radius: 10px; padding: 11px 16px; cursor: pointer; font-weight: 700; background: var(--brand); color: white; }
.button:hover { background: var(--brand-dark); }
.button.secondary { background: white; color: var(--brand-dark); border: 1px solid var(--line); }
.button.danger { background: var(--danger); }
.button:disabled { cursor: not-allowed; opacity: .5; }

.section { margin-top: 42px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.section-head h1, .section-head h2 { margin: 0; letter-spacing: -.025em; }
.section-head p { margin: 6px 0 0; color: var(--muted); }
.grid { display: grid; gap: 18px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 20px; box-shadow: 0 5px 20px rgba(30,60,64,.045); }
.card h3 { margin: 0 0 8px; }
.card p { color: var(--muted); line-height: 1.55; }
.card-link { cursor: pointer; transition: transform .2s, box-shadow .2s; }
.card-link:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; background: var(--brand-soft); color: var(--brand-dark); font-weight: 900; margin-bottom: 16px; }
.metric { font-size: 32px; font-weight: 800; letter-spacing: -.04em; }
.metric-label { color: var(--muted); font-size: 13px; margin-top: 5px; }
.status { display: inline-flex; align-items: center; border-radius: 999px; padding: 5px 9px; font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.status.good { background: #dcfae6; color: var(--success); }
.status.warn { background: #fff0c7; color: #8a5700; }
.status.bad { background: #fee4e2; color: var(--danger); }
.status.info { background: #e8e2ff; color: var(--violet); }

.ecosystem-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.ecosystem-node { position: relative; padding: 22px; background: white; border: 1px solid var(--line); border-radius: 16px; }
.ecosystem-node:not(:last-child)::after { content: "→"; position: absolute; right: -18px; top: 50%; color: var(--brand); font-size: 22px; z-index: 2; }
.ecosystem-node strong, .ecosystem-node span { display: block; }
.ecosystem-node span { color: var(--muted); margin-top: 6px; font-size: 13px; }
.architecture-stack { display: grid; gap: 10px; }
.architecture-row {
  display: grid;
  grid-template-columns: minmax(160px,.75fr) minmax(180px,.8fr) minmax(260px,1.8fr);
  gap: 16px;
  align-items: center;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: white;
}
.architecture-row strong { color: var(--brand-dark); }
.architecture-row span { font-weight: 800; }
.architecture-row small { color: var(--muted); line-height: 1.45; }
.architecture-lifecycle { display: grid; grid-template-columns: repeat(8, minmax(110px,1fr)); gap: 8px; overflow-x: auto; padding-bottom: 8px; }
.lifecycle-node { min-width: 110px; position: relative; display: grid; gap: 8px; padding: 16px 12px; border: 1px solid var(--line); border-radius: 13px; background: white; text-align: center; }
.lifecycle-node span { width: 26px; height: 26px; display: grid; place-items: center; margin: auto; border-radius: 50%; background: var(--brand); color: white; font-size: 12px; }
.runtime-card { display: grid; grid-template-columns: auto 1fr; gap: 15px; }
.runtime-card small { color: var(--brand-dark); font-weight: 700; }
.contract-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; }
.contract-grid div { padding: 13px; border: 1px solid var(--line); border-radius: 10px; background: #fbfdfc; }
.contract-grid strong, .contract-grid span { display: block; }
.contract-grid span { color: var(--muted); margin-top: 5px; font-size: 12px; line-height: 1.45; }
.code-block { padding: 17px; border-radius: 12px; background: #10282a; color: #dff4f0; font: 12px/1.8 ui-monospace, SFMono-Regular, Consolas, monospace; overflow-x: auto; }
.statement { color: var(--brand-dark)!important; font-size: clamp(19px,2vw,27px); font-weight: 800; line-height: 1.35!important; }
.product-stack { display: grid; gap: 10px; }
.product-row { display: grid; grid-template-columns: minmax(210px,.8fr) 2fr; gap: 20px; align-items: center; padding: 20px; border-left: 5px solid var(--product-color); border-radius: 0 14px 14px 0; background: white; box-shadow: 0 5px 20px rgba(30,60,64,.045); }
.product-row span { color: var(--product-color); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.product-row h2, .product-row p { margin: 4px 0; }
.chip-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-grid span { padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; background: #f7faf9; font-size: 12px; font-weight: 700; }
.comparison-table { display: grid; }
.comparison-table div { display: grid; grid-template-columns: minmax(180px,.7fr) 2fr; gap: 15px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.comparison-table div:last-child { border-bottom: 0; }
.comparison-table span { color: var(--muted); }
.adoption-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: 9px; }
.adoption-step { min-height: 110px; display: grid; place-content: center; gap: 9px; padding: 14px; border: 1px solid var(--line); border-radius: 13px; background: white; text-align: center; }
.adoption-step span { width: 30px; height: 30px; display: grid; place-items: center; margin: auto; border-radius: 50%; background: var(--brand-soft); color: var(--brand-dark); font-weight: 900; }

.playground-layout { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(0, 1.4fr); gap: 20px; }
.form-field { display: grid; gap: 7px; margin-bottom: 14px; }
.form-field label { font-weight: 700; font-size: 13px; }
.form-field textarea, .form-field select, .form-field input { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 11px 12px; background: #fbfdfc; }
.form-field textarea { min-height: 120px; resize: vertical; }
.scenario-buttons { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 14px; }
.scenario-buttons button { border: 1px solid var(--line); background: white; border-radius: 999px; padding: 6px 9px; cursor: pointer; font-size: 12px; }
.runtime-step { display: grid; grid-template-columns: 36px 1fr auto; align-items: center; gap: 12px; padding: 13px; border-radius: 12px; border: 1px solid var(--line); background: white; margin-bottom: 9px; }
.step-index { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: #edf2f1; font-weight: 800; }
.runtime-step.active { border-color: var(--violet); background: #f7f4ff; }
.runtime-step.active .step-index { background: var(--violet); color: white; animation: pulse 1s infinite; }
.runtime-step.completed { border-color: #75c69c; background: #f2fff7; }
.runtime-step.completed .step-index { background: var(--success); color: white; }
.runtime-step.failed { border-color: #f2a29b; background: #fff4f3; }
.runtime-step.failed .step-index { background: var(--danger); color: white; }
.runtime-step small { display: block; color: var(--muted); margin-top: 3px; }
.proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 15px; }
.proof { padding: 12px; border-radius: 10px; background: #10282a; color: #dff4f0; font-size: 12px; overflow-wrap: anywhere; }
.proof strong { display: block; color: white; margin-bottom: 5px; }
@keyframes pulse { 50% { opacity: .55; } }

.lifecycle { display: grid; grid-template-columns: repeat(5, minmax(120px,1fr)); gap: 10px; overflow-x: auto; padding-bottom: 5px; }
.lifecycle .card { min-width: 150px; padding: 15px; }
.lifecycle .card::after { content: "→"; float: right; color: var(--brand); }
.lifecycle .card:last-child::after { content: ""; }
.assistant-center { background: linear-gradient(145deg, #111f2c, #15363b); color: white; }
.assistant-center p { color: #c5dada; }
.assistant-query { display: flex; gap: 9px; }
.assistant-query input { flex: 1; min-width: 0; border-radius: 10px; border: 0; padding: 12px; }
.assistant-response { margin-top: 13px; border-left: 3px solid #69d4c4; background: rgba(255,255,255,.07); padding: 12px; line-height: 1.55; white-space: pre-wrap; }
.automation-flow { display: grid; gap: 9px; }
.automation-stage { display: grid; grid-template-columns: 32px 1fr auto; gap: 11px; align-items: center; padding: 11px; border: 1px solid var(--line); border-radius: 11px; background: #fbfdfc; }
.automation-stage > span { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; background: #e7efed; font-weight: 800; }
.automation-stage small { display: block; color: var(--muted); margin-top: 3px; }
.automation-stage em { color: var(--muted); font-size: 11px; }
.automation-stage.active { border-color: var(--violet); background: #f7f4ff; }
.automation-stage.completed { border-color: #75c69c; background: #f2fff7; }
.automation-stage.completed > span { background: var(--success); color: white; }
.signal-row { display: grid; grid-template-columns: 1fr auto auto; gap: 9px; align-items: center; padding: 11px 0; border-bottom: 1px solid var(--line); }
.signal-row small { display: block; color: var(--muted); margin-top: 4px; }
.automation-boundary { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; gap: 10px; align-items: center; }
.boundary-node { min-height: 108px; display: grid; place-content: center; gap: 6px; padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: white; text-align: center; }
.boundary-node span { color: var(--muted); font-size: 12px; }
.boundary-node.emphasis { background: var(--brand-dark); color: white; }
.boundary-node.emphasis span { color: #d8f4ee; }
.boundary-arrow { color: var(--brand); font-size: 24px; font-weight: 900; }
.automation-card-head { display: flex; justify-content: space-between; gap: 12px; }
.automation-card code { overflow-wrap: anywhere; }
.toggle { display: flex; gap: 5px; align-items: center; font-size: 12px; color: var(--muted); }
.automation-result { margin-top: 10px; padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: white; }
.automation-result strong { display: block; margin-top: 9px; }

.tabs { display: flex; gap: 8px; overflow-x: auto; margin-bottom: 18px; }
.tabs button { white-space: nowrap; border: 1px solid var(--line); border-radius: 9px; padding: 9px 12px; background: white; cursor: pointer; }
.tabs button.active { background: var(--brand); color: white; border-color: var(--brand); }
.panel[hidden] { display: none; }
.bar-chart { display: grid; gap: 12px; }
.bar-row { display: grid; grid-template-columns: 150px 1fr 55px; gap: 10px; align-items: center; font-size: 13px; }
.bar-track { height: 9px; border-radius: 99px; background: #e8eeee; overflow: hidden; }
.bar-fill { height: 100%; background: linear-gradient(90deg, var(--brand), #64c7b4); }
.activity { display: grid; gap: 10px; }
.activity-row { display: grid; grid-template-columns: 95px 1fr auto; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--line); align-items: center; }
.activity-row:last-child { border-bottom: 0; }

.report-list { display: grid; gap: 13px; }
.report-card { display: grid; grid-template-columns: 130px 1fr auto; align-items: center; gap: 18px; }
.report-code { font-weight: 900; color: var(--brand-dark); }
.report-detail { margin-top: 18px; }
.crossrefs { display: flex; flex-wrap: wrap; gap: 7px; }
.crossrefs button { border: 1px solid var(--line); background: var(--brand-soft); color: var(--brand-dark); border-radius: 999px; padding: 5px 9px; cursor: pointer; }
.demo-card .demo-meta { display: flex; gap: 7px; flex-wrap: wrap; margin: 12px 0; }
.demo-card ul { color: var(--muted); padding-left: 19px; line-height: 1.7; }
.replay-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.replay-table th, .replay-table td { text-align: left; padding: 10px; border-bottom: 1px solid var(--line); }
.empty { padding: 30px; text-align: center; color: var(--muted); border: 1px dashed var(--line); border-radius: 12px; }

@media (max-width: 1000px) {
  .topbar { flex-wrap: wrap; gap: 10px; }
  .brand { flex: 1; }
  .mobile-menu { display: block; border: 1px solid var(--line); background: white; padding: 8px 10px; border-radius: 8px; }
  .main-nav { display: none; order: 4; width: 100%; flex-direction: column; align-items: stretch; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 11px; }
  .persona-control { margin-left: auto; }
  .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .ecosystem-flow { grid-template-columns: repeat(2, 1fr); }
  .ecosystem-node::after { display: none; }
  .playground-layout { grid-template-columns: 1fr; }
  .contract-grid { grid-template-columns: repeat(2,1fr); }
  .adoption-grid { grid-template-columns: repeat(3,1fr); }
  .automation-boundary { grid-template-columns: 1fr; }
  .boundary-arrow { transform: rotate(90deg); justify-self: center; }
}

@media (max-width: 680px) {
  main { width: min(100% - 20px, 1240px); padding-top: 20px; }
  .topbar { padding: 9px 10px; }
  .brand { min-width: 0; }
  .brand strong { font-size: 13px; }
  .brand small { display: none; }
  .persona-control span { display: none; }
  .hero { border-radius: 18px; padding: 26px 20px; }
  .hero h1 { font-size: 38px; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4, .ecosystem-flow, .proof-grid { grid-template-columns: 1fr; }
  .section-head { align-items: flex-start; flex-direction: column; }
  .report-card { grid-template-columns: 1fr; gap: 7px; }
  .architecture-row { grid-template-columns: 1fr; gap: 5px; }
  .contract-grid, .adoption-grid { grid-template-columns: 1fr; }
  .product-row, .comparison-table div { grid-template-columns: 1fr; gap: 7px; }
  .bar-row { grid-template-columns: 95px 1fr 42px; }
  .activity-row { grid-template-columns: 72px 1fr; }
  .activity-row .status { grid-column: 2; justify-self: start; }
  .assistant-query { flex-direction: column; }
  .signal-row { grid-template-columns: 1fr; }
  footer { flex-direction: column; gap: 8px; }
}