:root {
  color-scheme: dark;
  --ink: #e8ede6;
  --muted: #8b9b93;
  --subtle: #61736b;
  --line: rgba(164, 190, 173, 0.18);
  --line-strong: rgba(164, 190, 173, 0.34);
  --surface: #0d1817;
  --surface-raised: #12211f;
  --canvas: #091112;
  --accent: #b9ef72;
  --accent-dim: rgba(185, 239, 114, 0.14);
  --teal: #85d6bf;
  --warning: #efbd68;
  --danger: #ff8878;
  --radius: 10px;
  --max-width: 1240px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background: var(--canvas);
  color: var(--ink);
  font-family: "Avenir Next", Avenir, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button, a { font: inherit; }
button { color: inherit; }
a { color: inherit; }

.page-noise {
  position: fixed;
  z-index: -1;
  inset: 0;
  opacity: 0.35;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 72%);
}

.skip-link { position: absolute; left: 12px; top: -48px; padding: 10px 14px; background: var(--accent); color: #10200f; z-index: 10; border-radius: 0 0 6px 6px; }
.skip-link:focus { top: 0; }

.section-shell { width: min(var(--max-width), calc(100% - 96px)); margin-inline: auto; }

.topbar {
  width: min(var(--max-width), calc(100% - 96px));
  height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); font-size: 12px; font-weight: 700; letter-spacing: 0.12em; }
.brand b { color: var(--accent); font-weight: 700; }
.brand-mark { display: inline-flex; gap: 3px; width: 23px; height: 23px; align-items: end; }
.brand-mark span { display: block; width: 5px; background: var(--accent); border-radius: 2px 2px 0 0; }
.brand-mark span:nth-child(1) { height: 10px; opacity: 0.55; }
.brand-mark span:nth-child(2) { height: 17px; }
.brand-mark span:nth-child(3) { height: 23px; opacity: 0.75; }
.topbar-meta { display: flex; align-items: center; gap: 24px; color: var(--subtle); font: 10px/1 "SFMono-Regular", Consolas, monospace; letter-spacing: 0.12em; text-transform: uppercase; }
.environment { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); }
.status-dot { width: 6px; height: 6px; display: inline-block; border-radius: 50%; background: var(--subtle); }
.status-dot--live { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-dim); }

.hero { min-height: 640px; display: grid; grid-template-columns: 1.06fr 0.94fr; gap: 9vw; align-items: center; padding-block: 82px 108px; }
.eyebrow { margin: 0 0 24px; color: var(--accent); font: 10px/1.2 "SFMono-Regular", Consolas, monospace; letter-spacing: 0.2em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-weight: 500; }
h1 { max-width: 700px; margin-bottom: 28px; font-size: clamp(3.6rem, 7vw, 6.8rem); line-height: 0.92; letter-spacing: -0.075em; }
h1 em, h2 em { color: var(--accent); font-style: normal; }
.hero-lede { max-width: 500px; margin-bottom: 34px; color: var(--muted); font-size: 16px; line-height: 1.65; }
.hero-actions { display: flex; align-items: center; gap: 28px; }
.button { border: 1px solid transparent; border-radius: 999px; padding: 13px 17px 13px 20px; display: inline-flex; align-items: center; gap: 18px; cursor: pointer; transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease; white-space: nowrap; }
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0) scale(0.98); }
.button:focus-visible, .text-link:focus-visible, .icon-button:focus-visible, .step-tab:focus-visible, .mode-button:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.button--primary { background: var(--accent); color: #0d1a13; font-weight: 700; }
.button--primary:hover { background: #caf78b; }
.button-arrow { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: rgba(15, 31, 18, 0.15); }
.text-link { color: var(--muted); text-decoration: none; font-size: 13px; }
.text-link span { margin-left: 8px; color: var(--accent); }
.text-link:hover { color: var(--ink); }
.hero-brief { position: relative; max-width: 450px; justify-self: end; padding: 28px; border: 1px solid var(--line-strong); background: linear-gradient(145deg, rgba(23, 42, 38, 0.82), rgba(12, 24, 23, 0.9)); box-shadow: var(--shadow); }
.hero-brief::before { content: ""; position: absolute; left: -1px; top: -1px; width: 72px; height: 3px; background: var(--accent); }
.brief-topline, .brief-line, .brief-footer { display: flex; align-items: center; justify-content: space-between; color: var(--subtle); font: 10px/1.2 "SFMono-Regular", Consolas, monospace; letter-spacing: 0.11em; text-transform: uppercase; }
.brief-title { margin: 72px 0 72px; font-size: clamp(2.5rem, 4vw, 4rem); line-height: 0.96; letter-spacing: -0.06em; }
.brief-title strong { color: var(--accent); font-weight: 500; }
.brief-line { padding-block: 13px; border-top: 1px solid var(--line); }
.brief-line span:last-child { color: var(--ink); letter-spacing: 0.02em; text-transform: none; }
.brief-line .signal-positive { color: var(--accent); }
.brief-footer { justify-content: flex-start; gap: 10px; margin-top: 28px; color: var(--muted); }
.brief-footer-line { flex: 1; height: 1px; background: var(--line); }
.pulse-ring { width: 7px; height: 7px; border: 1px solid var(--accent); border-radius: 50%; box-shadow: 0 0 0 4px var(--accent-dim); }

.demo-section { padding-block: 108px 126px; border-top: 1px solid var(--line); }
.section-intro { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 54px; }
.section-intro .eyebrow { margin-bottom: 20px; }
h2 { margin-bottom: 0; font-size: clamp(2.7rem, 5.2vw, 5rem); line-height: 0.96; letter-spacing: -0.07em; }
.section-note { max-width: 280px; margin: 0 0 5px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.demo-controls { display: flex; justify-content: space-between; gap: 28px; padding-block: 15px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
.step-tabs { display: flex; gap: 24px; overflow-x: auto; scrollbar-width: none; }
.step-tabs::-webkit-scrollbar { display: none; }
.step-tab { padding: 0; border: 0; background: transparent; color: var(--subtle); cursor: pointer; font-size: 11px; white-space: nowrap; transition: color 160ms ease; }
.step-tab span { margin-right: 8px; color: var(--subtle); font: 10px "SFMono-Regular", Consolas, monospace; }
.step-tab:hover, .step-tab.is-active { color: var(--ink); }
.step-tab.is-active span { color: var(--accent); }
.step-actions { display: flex; flex: 0 0 auto; align-items: center; gap: 11px; }
.icon-button { width: 28px; height: 28px; padding: 0; border: 1px solid var(--line-strong); border-radius: 50%; background: transparent; color: var(--muted); cursor: pointer; }
.icon-button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.icon-button:disabled { cursor: not-allowed; opacity: 0.3; }
.step-counter { margin-inline: 4px; color: var(--subtle); font: 10px "SFMono-Regular", Consolas, monospace; }
.step-counter b { color: var(--ink); font-weight: 400; }
.demo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }
.event-column, .decision-panel { min-height: 436px; background: var(--surface); border: 1px solid var(--line); }
.event-column { padding: 23px; }
.panel-label, .decision-topline, .zone-header, .closing-topline { display: flex; align-items: center; justify-content: space-between; color: var(--subtle); font: 10px/1.2 "SFMono-Regular", Consolas, monospace; letter-spacing: 0.14em; text-transform: uppercase; }
.event-stream { display: grid; align-content: start; margin-top: 26px; }
.event { position: relative; display: grid; grid-template-columns: 18px 1fr auto; gap: 13px; padding: 14px 0 16px; border-top: 1px solid var(--line); animation: appear 400ms both; }
.event-marker { position: relative; width: 18px; height: 18px; display: grid; place-items: center; border: 1px solid var(--line-strong); color: var(--muted); font: 9px "SFMono-Regular", Consolas, monospace; }
.event--active .event-marker { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }
.event--warning .event-marker { border-color: var(--warning); color: var(--warning); }
.event--danger .event-marker { border-color: var(--danger); color: var(--danger); }
.event-copy b { display: block; margin-bottom: 2px; color: var(--ink); font-size: 12px; font-weight: 600; }
.event-copy small { display: block; color: var(--muted); font-size: 11px; }
.event-time { color: var(--subtle); font: 9px "SFMono-Regular", Consolas, monospace; }
.event-state { grid-column: 2 / 4; margin-top: 2px; color: var(--subtle); font: 9px "SFMono-Regular", Consolas, monospace; letter-spacing: 0.06em; text-transform: uppercase; }
.event--active .event-state { color: var(--accent); }
.event--warning .event-state { color: var(--warning); }
.event--danger .event-state { color: var(--danger); }
@keyframes appear { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: translateY(0); } }
.decision-panel { padding: 25px 27px; display: flex; flex-direction: column; }
.decision-topline { margin-bottom: 63px; }
.severity-pill { padding: 5px 8px; border: 1px solid var(--line-strong); border-radius: 99px; color: var(--teal); font-size: 9px; letter-spacing: 0.09em; }
.severity-pill--warning { color: var(--warning); border-color: rgba(239, 189, 104, 0.42); }
.severity-pill--danger { color: var(--danger); border-color: rgba(255, 136, 120, 0.42); }
.decision-panel h3 { max-width: 440px; margin-bottom: 18px; font-size: clamp(2rem, 3.5vw, 3.2rem); line-height: 0.98; letter-spacing: -0.065em; }
.decision-copy { max-width: 440px; margin-bottom: 28px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.decision-facts { margin-top: auto; border-top: 1px solid var(--line); }
.fact { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-block: 11px; border-bottom: 1px solid var(--line); font-size: 11px; }
.fact span:first-child { color: var(--subtle); }
.fact span:last-child { color: var(--ink); text-align: right; }
.fact .fact-positive { color: var(--accent); }
.fact .fact-warning { color: var(--warning); }
.fact .fact-danger { color: var(--danger); }
.decision-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 18px; }
.agent-signature { display: flex; align-items: center; gap: 9px; }
.agent-avatar { width: 25px; height: 25px; display: grid; place-items: center; border: 1px solid var(--accent); border-radius: 50%; color: var(--accent); font: 8px "SFMono-Regular", Consolas, monospace; }
.agent-signature b, .agent-signature small { display: block; }
.agent-signature b { color: var(--muted); font-size: 10px; font-weight: 500; }
.agent-signature small { color: var(--subtle); font-size: 9px; }
.decision-time { color: var(--subtle); font: 9px "SFMono-Regular", Consolas, monospace; }
.demo-caption { display: flex; align-items: center; gap: 16px; margin-top: 22px; }
.caption-index { color: var(--accent); font: 11px "SFMono-Regular", Consolas, monospace; }
.demo-caption p { max-width: 420px; margin: 0; color: var(--muted); font-size: 12px; }
.caption-line { width: 76px; height: 1px; background: var(--line-strong); }
.caption-hint { color: var(--subtle); font: 10px "SFMono-Regular", Consolas, monospace; }
.presenter-notes { margin-top: 28px; border: 1px solid var(--line); background: rgba(17, 32, 29, 0.5); }
.presenter-notes summary { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 15px 18px; cursor: pointer; color: var(--ink); font-size: 12px; list-style: none; }
.presenter-notes summary::-webkit-details-marker { display: none; }
.presenter-notes summary::after { content: "+"; color: var(--accent); font: 16px/1 "SFMono-Regular", Consolas, monospace; }
.presenter-notes[open] summary::after { content: "−"; }
.notes-toggle { color: var(--subtle); font: 9px "SFMono-Regular", Consolas, monospace; letter-spacing: 0.08em; text-transform: uppercase; }
.notes-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 32px; padding: 20px 18px 22px; border-top: 1px solid var(--line); }
.notes-label { display: block; margin-bottom: 10px; color: var(--accent); font: 9px "SFMono-Regular", Consolas, monospace; letter-spacing: 0.14em; }
.notes-grid p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.7; }
.notes-grid > div:last-child { padding-left: 22px; border-left: 1px solid var(--line); }

.boundary-section { padding-block: 126px 136px; border-top: 1px solid var(--line); }
.section-intro--boundary { align-items: end; }
.mode-switch { display: inline-flex; gap: 3px; padding: 4px; margin-bottom: 24px; border: 1px solid var(--line-strong); border-radius: 99px; background: var(--surface); }
.mode-button { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border: 0; border-radius: 99px; background: transparent; color: var(--subtle); cursor: pointer; font-size: 11px; transition: background-color 160ms ease, color 160ms ease; }
.mode-button.is-active { background: var(--accent); color: #122015; font-weight: 700; }
.mode-dot { width: 6px; height: 6px; display: inline-block; border: 1px solid currentColor; border-radius: 50%; }
.mode-button.is-active .mode-dot { background: #122015; }
.boundary-visual { display: grid; grid-template-columns: minmax(0, 1fr) 100px minmax(0, 0.8fr); align-items: stretch; min-height: 418px; border: 1px solid var(--line); }
.zone { padding: 24px; }
.zone--local { background: rgba(21, 45, 37, 0.45); }
.zone--cloud { background: rgba(17, 27, 28, 0.78); }
.zone-header { padding-bottom: 23px; border-bottom: 1px solid var(--line); }
.zone-tag { color: var(--accent); }
.zone--cloud .zone-tag { color: var(--teal); }
.zone-status { color: var(--muted); }
.zone h3 { margin-block: 48px 34px; font-size: clamp(2rem, 3.8vw, 3.8rem); line-height: 0.95; letter-spacing: -0.07em; }
.zone h3 strong { color: var(--accent); font-weight: 500; }
.zone--cloud h3 strong { color: var(--teal); }
.zone-nodes { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.node { min-height: 68px; display: flex; align-items: center; gap: 10px; padding: 11px; border: 1px solid var(--line); background: rgba(6, 16, 15, 0.23); }
.node--featured { grid-column: 1 / -1; border-color: rgba(185, 239, 114, 0.4); }
.node-mark { flex: 0 0 auto; width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid var(--line-strong); color: var(--accent); font: 9px "SFMono-Regular", Consolas, monospace; }
.node b, .node small { display: block; }
.node b { color: var(--ink); font-size: 11px; font-weight: 600; }
.node small { color: var(--muted); font-size: 10px; }
.boundary-connector { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; color: var(--subtle); }
.connector-line { width: 1px; height: 72px; background: var(--line-strong); }
.connector-label { writing-mode: vertical-rl; transform: rotate(180deg); font: 9px "SFMono-Regular", Consolas, monospace; letter-spacing: 0.14em; }
.connector-arrow { color: var(--subtle); font-size: 18px; }
.cloud-payload { margin-top: 48px; border-top: 1px solid var(--line); }
.payload-row { display: flex; align-items: center; gap: 9px; padding-block: 14px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.payload-row b { margin-left: auto; color: var(--subtle); font: 9px "SFMono-Regular", Consolas, monospace; }
.payload-state { width: 6px; height: 6px; border-radius: 50%; background: var(--subtle); }
.payload-state--blocked { background: var(--danger); }
.payload-state--muted { background: var(--warning); }
.boundary-summary { display: flex; align-items: center; gap: 14px; padding: 16px 18px; border: 1px solid var(--line); border-top: 0; color: var(--muted); font-size: 11px; }
.summary-key { color: var(--subtle); font: 9px "SFMono-Regular", Consolas, monospace; letter-spacing: 0.13em; }
.boundary-summary strong { color: var(--accent); font-weight: 600; }
.summary-separator { width: 32px; height: 1px; background: var(--line-strong); }

.policy-section { display: grid; grid-template-columns: 0.86fr 1.14fr; gap: 10vw; padding-block: 128px; border-top: 1px solid var(--line); }
.policy-heading { align-self: start; }
.policy-heading > p:last-child { max-width: 320px; margin-top: 30px; color: var(--muted); line-height: 1.65; }
.policy-list { border-top: 1px solid var(--line-strong); }
.policy-row { display: grid; grid-template-columns: 42px 1fr auto; gap: 22px; align-items: start; padding: 24px 0; border-bottom: 1px solid var(--line); }
.policy-number { color: var(--accent); font: 10px "SFMono-Regular", Consolas, monospace; }
.policy-row h3 { margin-bottom: 7px; color: var(--ink); font-size: 17px; letter-spacing: -0.02em; }
.policy-row p { max-width: 430px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.policy-outcome { padding-top: 4px; color: var(--subtle); font: 9px "SFMono-Regular", Consolas, monospace; text-transform: uppercase; white-space: nowrap; }

.closing-section { padding-block: 104px 96px; border-top: 1px solid var(--line); }
.closing-section h2 { max-width: 780px; margin-block: 78px 56px; font-size: clamp(3.3rem, 7vw, 7.3rem); }
.closing-bottom { display: flex; align-items: end; justify-content: space-between; gap: 40px; }
.closing-bottom p { max-width: 360px; margin: 0; color: var(--muted); line-height: 1.65; }
.button--outline { border-color: var(--line-strong); background: transparent; color: var(--ink); }
.button--outline:hover { border-color: var(--accent); color: var(--accent); }
.footer { display: flex; align-items: center; justify-content: space-between; min-height: 72px; border-top: 1px solid var(--line); color: var(--subtle); font: 9px "SFMono-Regular", Consolas, monospace; letter-spacing: 0.12em; }
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--accent); }

@media (max-width: 900px) {
  .section-shell, .topbar { width: min(var(--max-width), calc(100% - 48px)); }
  .hero { grid-template-columns: 1fr; gap: 56px; min-height: auto; padding-block: 74px 100px; }
  .hero-brief { justify-self: stretch; max-width: none; }
  .demo-grid, .policy-section { grid-template-columns: 1fr; }
  .policy-section { gap: 62px; }
  .boundary-visual { grid-template-columns: 1fr; }
  .boundary-connector { flex-direction: row; min-height: 82px; }
  .connector-line { width: 72px; height: 1px; }
  .connector-label { writing-mode: initial; transform: none; }
  .connector-arrow { transform: rotate(90deg); }
}

@media (max-width: 620px) {
  .section-shell, .topbar { width: calc(100% - 32px); }
  .topbar { height: 65px; }
  .topbar-meta { gap: 0; }
  .topbar-meta .version { display: none; }
  .brand { font-size: 10px; }
  .hero { padding-block: 67px 78px; }
  h1 { font-size: clamp(3.4rem, 17vw, 5.2rem); }
  .hero-lede { font-size: 14px; }
  .hero-actions { align-items: start; flex-direction: column; gap: 20px; }
  .brief-title { margin-block: 54px; }
  .demo-section, .boundary-section, .policy-section { padding-block: 78px; }
  .section-intro { align-items: start; flex-direction: column; gap: 22px; margin-bottom: 36px; }
  .section-note { margin: 0; }
  h2 { font-size: clamp(2.7rem, 13vw, 4rem); }
  .demo-controls { align-items: start; flex-direction: column; gap: 18px; }
  .step-tabs { width: 100%; gap: 19px; }
  .step-actions { align-self: flex-end; }
  .event-column, .decision-panel { min-height: auto; padding: 18px; }
  .decision-topline { margin-bottom: 50px; }
  .decision-panel h3 { font-size: 2.4rem; }
  .decision-footer { align-items: start; flex-direction: column; }
  .demo-caption { align-items: start; flex-wrap: wrap; }
  .caption-line { display: none; }
  .caption-hint { flex-basis: 100%; margin-left: 27px; }
  .presenter-notes summary { align-items: start; flex-direction: column; gap: 6px; }
  .presenter-notes summary::after { position: absolute; right: 18px; }
  .presenter-notes { position: relative; }
  .notes-grid { grid-template-columns: 1fr; gap: 22px; }
  .notes-grid > div:last-child { padding: 18px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .mode-switch { max-width: 100%; }
  .mode-button { padding-inline: 9px; font-size: 10px; }
  .zone { padding: 18px; }
  .zone h3 { margin-block: 37px 26px; font-size: 2.7rem; }
  .zone-nodes { grid-template-columns: 1fr; }
  .node--featured { grid-column: auto; }
  .boundary-summary { align-items: start; flex-wrap: wrap; gap: 9px 12px; }
  .summary-separator { display: none; }
  .boundary-summary span:last-child { flex-basis: 100%; }
  .policy-row { grid-template-columns: 28px 1fr; gap: 12px; }
  .policy-outcome { grid-column: 2; }
  .closing-section { padding-block: 78px 70px; }
  .closing-section h2 { margin-block: 56px 38px; font-size: clamp(3rem, 15vw, 5.2rem); }
  .closing-bottom { align-items: start; flex-direction: column; }
  .footer { align-items: start; flex-direction: column; justify-content: center; gap: 8px; padding-block: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}