:root {
  --bg: #0A0A0B;
  --panel: #121214;
  --raised: #1A1A1E;
  --line: rgba(255, 255, 255, 0.08);
  --accent: #22D3EE;
  --text: #F5F5F5;
  --muted: #A1A1AA;
  --header: 72px;
  --wrap: 1312px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, sans-serif;
}

body.nav-open { overflow: hidden; }

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

a { color: inherit; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip {
  position: absolute;
  left: 16px;
  top: -40px;
  z-index: 40;
  background: var(--raised);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 6px;
}

.skip:focus { top: 16px; }

.wrap {
  width: min(var(--wrap), calc(100% - 48px));
  margin: 0 auto;
}

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}

.hold {
  color: var(--accent);
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 20px;
  padding: 6px 11px;
  font-size: 10px;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.display {
  font: 500 58px/1.15 "Playfair Display", Georgia, serif;
  letter-spacing: -0.035em;
  margin: 14px 0 0;
}

.heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.lede {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0 0 4px;
  text-align: right;
}

.num,
.number {
  width: 32px;
  height: 32px;
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--accent);
  flex-shrink: 0;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: var(--header);
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 32px;
  background: rgba(10, 10, 11, 0.92);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(16px);
}

.site-header.is-scrolled { border-bottom-color: var(--line); }

.brand { display: flex; align-items: center; flex-shrink: 0; }

.logo {
  width: 210px;
  height: 38px;
  object-fit: contain;
  object-position: left;
}

.site-nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
}

.site-nav a {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--text);
}

.header-status {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0;
}

.nav-toggle i {
  display: block;
  width: 16px;
  height: 1px;
  margin: 5px auto;
  background: var(--text);
}

/* Shared section chrome */

section {
  position: relative;
  padding: 72px 0 80px;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header) + 8px);
}

section:before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 72% 28%, rgba(34, 211, 238, 0.05), transparent 48%);
}

.hero { border-top: 0; padding-top: 56px; }

.hero:before {
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    radial-gradient(ellipse at 78% 45%, rgba(34, 211, 238, 0.055), transparent 46%);
  background-size: 80px 80px, 80px 80px, auto;
  opacity: 1;
}

.hero .wrap,
.loop .wrap,
.writers .wrap,
.failover .wrap,
.dallas .wrap,
.lifecycle .wrap { position: relative; }

/* Hero */

.hero h1 {
  font: 500 clamp(46px, 7vw, 88px)/1.05 "Playfair Display", Georgia, serif;
  letter-spacing: -0.045em;
  margin: 18px 0;
}

.hero h1 span { color: var(--accent); }

.thesis {
  font-size: 21px;
  line-height: 1.5;
  margin: 0 0 14px;
  letter-spacing: -0.025em;
}

.subtitle {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

.architecture {
  margin-top: 44px;
  display: grid;
  grid-template-columns: minmax(180px, 1.15fr) 28px minmax(220px, 1.45fr) 28px minmax(160px, 1fr) 28px minmax(160px, 1fr) 28px minmax(180px, 1.1fr);
  align-items: stretch;
}

.architecture .panel {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 12px;
  padding: 22px;
  min-height: 204px;
}

.architecture .panel.active { border-color: rgba(34, 211, 238, 0.3); }

.architecture .number { margin-bottom: 20px; }

.architecture h2 {
  font-size: 19px;
  font-weight: 500;
  margin: 0 0 9px;
  letter-spacing: -0.025em;
}

.architecture p {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
}

.connector {
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
  align-self: center;
  position: relative;
}

.connector:after {
  content: "";
  position: absolute;
  right: 1px;
  top: -3px;
  width: 6px;
  height: 6px;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
  transform: rotate(45deg);
}

.writer-stack {
  background: var(--raised);
  padding: 17px;
}

.writer-stack .eyebrow { margin: 0 0 14px; }

.writer {
  height: 43px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  margin: 6px 0;
  font-size: 12px;
}

.writer small { color: var(--muted); font-size: 10px; }

.dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 8px;
}

.diagram-label {
  margin-top: 15px;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.roles {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
}

.role {
  font-size: 10px;
  color: var(--muted);
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: var(--panel);
}

.role b { color: var(--text); font-weight: 500; }

/* Loop */

.phases {
  display: grid;
  grid-template-columns: 2fr 2fr 2fr;
  gap: 18px;
  margin: 36px 0 18px;
}

.phase {
  padding: 12px 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.phase b { color: var(--accent); font-weight: 400; }

.desktop-flow {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}

.node {
  min-height: 298px;
  padding: 19px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  position: relative;
}

.node:not(:last-child):after {
  content: "→";
  position: absolute;
  right: -17px;
  top: 139px;
  width: 17px;
  text-align: center;
  color: var(--accent);
  z-index: 2;
  font-size: 15px;
}

.node .num { margin-bottom: 22px; }

.node h3 {
  font-size: 20px;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.035em;
  margin: 0 0 15px;
}

.node p {
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0;
}

.node p strong { font-weight: 500; color: var(--text); }

.node .tag {
  position: absolute;
  bottom: 17px;
  left: 16px;
  right: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  color: var(--accent);
}

.node.final {
  border-color: rgba(34, 211, 238, 0.3);
  background: linear-gradient(155deg, rgba(34, 211, 238, 0.035), transparent), var(--panel);
}

.mobile-loop,
.loop-head-mobile { display: none; }

.guardrail {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 17px 20px;
  background: var(--raised);
  font-size: 12px;
}

.guardrail span { color: var(--muted); }
.guardrail b { color: var(--accent); font-weight: 500; }

.role-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px 24px;
  margin-top: 29px;
}

.role-row {
  display: flex;
  gap: 12px;
  font-size: 11px;
  line-height: 1.5;
}

.role-row b { min-width: 72px; font-weight: 500; }
.role-row span { color: var(--muted); }

/* Writers */

.owner {
  display: flex;
  justify-content: center;
  margin-top: 26px;
}

.owner span {
  padding: 10px 19px;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 24px;
  font-size: 12px;
}

.owner b { color: var(--accent); font-weight: 500; }

.bus {
  height: 35px;
  position: relative;
  margin: 0 12%;
}

.bus:before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  height: 18px;
  width: 1px;
  background: rgba(34, 211, 238, 0.4);
}

.bus:after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 18px;
  height: 17px;
  border-top: 1px solid rgba(34, 211, 238, 0.3);
  border-left: 1px solid rgba(34, 211, 238, 0.3);
  border-right: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 8px 8px 0 0;
}

.writers .cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.writers .card {
  min-height: 302px;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  position: relative;
}

.writers .card:before {
  content: "";
  position: absolute;
  width: 1px;
  height: 17px;
  background: rgba(34, 211, 238, 0.3);
  left: 50%;
  top: -18px;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
}

.parallel {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.parallel:before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 7px;
}

.writers h3 {
  font-size: 23px;
  letter-spacing: -0.035em;
  font-weight: 500;
  margin: 0 0 23px;
}

.writers .label,
.rules .label {
  font-size: 9px;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 9px;
}

.model {
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
  min-height: 55px;
}

.branch {
  position: absolute;
  bottom: 22px;
  left: 24px;
  right: 24px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 11px;
}

.branch span:last-child { color: var(--accent); }

.review {
  margin-top: 26px;
  display: grid;
  grid-template-columns: 1fr 36px 1fr 36px 1fr;
  align-items: center;
}

.stage {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
}

.stage small { font-size: 11px; color: var(--muted); }

.arrow { text-align: center; color: var(--accent); }

.rules {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  align-items: center;
}

.rules .label { margin: 0 13px 0 0; }

.chip {
  font-size: 11px;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 9px 13px;
  color: var(--muted);
}

.chip.last {
  color: var(--accent);
  border-color: rgba(34, 211, 238, 0.25);
}

/* Failover */

.layers {
  margin-top: 29px;
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.layer {
  display: grid;
  grid-template-columns: 172px 1fr;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  overflow: hidden;
}

.layer-label { padding: 24px 20px; border-right: 1px solid var(--line); }

.layer-label .index {
  font-size: 11px;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}

.layer-label h3 {
  font-size: 15px;
  line-height: 1.4;
  font-weight: 500;
  margin: 0 0 7px;
}

.layer-label p {
  font-size: 10px;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}

.race { padding: 20px 24px; }

.race-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 17px;
  font-size: 11px;
  color: var(--muted);
}

.pill {
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 7px 12px;
  color: var(--text);
  background: var(--raised);
}

.writer-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.failover .writer {
  height: auto;
  min-height: 77px;
  background: var(--raised);
  border-radius: 7px;
  padding: 14px;
  display: block;
  margin: 0;
}

.failover .writer strong {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 9px;
}

.failover .writer small {
  color: var(--accent);
  font-size: 11px;
}

.failover .writer small:before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 7px;
}

.failover .writer.unavailable {
  background: transparent;
  border-style: dashed;
}

.failover .writer.unavailable strong,
.failover .writer.unavailable small { color: var(--muted); }

.failover .writer.unavailable small:before {
  background: none;
  border: 1px solid var(--muted);
  width: 4px;
  height: 4px;
}

.race-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 16px;
  font-size: 11px;
  color: var(--muted);
}

.race-bottom b { color: var(--text); font-weight: 500; }

.gates {
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 28px 1fr 28px 1fr;
  align-items: center;
}

.gates .gate {
  min-height: 85px;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--raised);
}

.gates .gate h4 { font-size: 13px; font-weight: 500; margin: 0 0 9px; }

.gates .gate p { font-size: 11px; line-height: 1.55; color: var(--muted); margin: 0; }

.handoff {
  padding: 22px 24px;
  display: grid;
  grid-template-columns: 258px 36px 1fr;
  align-items: center;
}

.threshold { padding-right: 20px; }

.threshold strong {
  font: 500 35px/1 "Playfair Display", Georgia, serif;
  color: var(--accent);
}

.threshold span {
  font-size: 11px;
  color: var(--muted);
  margin-left: 10px;
}

.meter {
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  margin-top: 14px;
  border-radius: 8px;
  overflow: hidden;
}

.meter i {
  display: block;
  height: 100%;
  width: 80%;
  background: var(--accent);
}

.destination {
  padding: 16px 19px;
  background: var(--raised);
  border: 1px solid rgba(34, 211, 238, 0.2);
  border-radius: 7px;
}

.destination .eyebrow { font-size: 9px; margin-bottom: 8px; }

.destination h4 {
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.destination p:last-child {
  font-size: 11px;
  color: var(--muted);
  margin: 0;
}

.note {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 17px;
  font-size: 11px;
  color: var(--muted);
}

.note b { font-weight: 500; color: var(--text); }

/* Dallas */

.trigger {
  margin-top: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--raised);
  padding: 15px 20px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 12px;
}

.trigger .eyebrow { font-size: 9px; }
.or { color: var(--accent); font-size: 10px; letter-spacing: 0.12em; }

.swimlanes {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr 1.35fr 1fr;
  gap: 20px;
}

.lane {
  min-height: 331px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.lane.bridge {
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.025), transparent), var(--panel);
}

.lane-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.lane-head h3 { font-size: 13px; font-weight: 500; margin: 0; }
.lane-head span { font-size: 10px; color: var(--muted); }

.dallas .step { margin-top: 24px; }

.step-top { display: flex; align-items: center; gap: 10px; }

.dallas .num {
  width: 27px;
  height: 27px;
  font-size: 10px;
}

.dallas h4 {
  font-size: 21px;
  letter-spacing: -0.03em;
  font-weight: 500;
  margin: 0;
}

.dallas .step p {
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
  margin: 15px 0;
}

.dallas .role {
  display: inline-block;
  padding: 7px 10px;
  border-radius: 20px;
}

.channel {
  margin-top: 18px;
  padding: 15px 13px;
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 7px;
  background: var(--raised);
}

.channel strong {
  font-size: clamp(13px, 1.4vw, 17px);
  font-weight: 500;
  letter-spacing: -0.035em;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}

.channel span { font-size: 10px; color: var(--muted); }

.mirror {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.8;
  margin-top: 14px;
}

.mirror b { color: var(--text); font-weight: 400; }

.lane-foot {
  margin-top: auto;
  padding-top: 13px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.notebook {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--raised);
  padding: 19px 23px;
}

.notebook h3 { font-size: 13px; font-weight: 500; margin: 0 0 7px; }
.notebook p { font-size: 11px; color: var(--muted); margin: 0; }

.notebook .center {
  padding: 10px 20px;
  border: 1px solid rgba(34, 211, 238, 0.2);
  border-radius: 24px;
  color: var(--accent);
  font-size: 12px;
}

.notebook .right { text-align: right; }

.boundary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 22px;
  font-size: 12px;
}

.boundary b { font-weight: 500; color: var(--accent); }
.boundary span { color: var(--muted); }

/* Lifecycle */

.arc {
  position: relative;
  margin-top: 28px;
  padding-top: 36px;
}

.skip-arc {
  position: absolute;
  left: calc((100% - 108px) / 4 + 18px);
  width: calc((100% - 108px) / 4 + 36px);
  height: 26px;
  top: 0;
  border: 1px dashed rgba(161, 161, 170, 0.35);
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
}

.skip-arc span {
  position: absolute;
  left: 50%;
  top: -8px;
  transform: translateX(-50%);
  white-space: nowrap;
  padding: 0 10px;
  background: var(--bg);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.skip-arc:after {
  content: "";
  position: absolute;
  right: -4px;
  bottom: -1px;
  width: 6px;
  height: 6px;
  border-right: 1px solid var(--muted);
  border-bottom: 1px solid var(--muted);
  transform: rotate(45deg);
}

.stages {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 36px;
}

.lifecycle .stage {
  min-height: 340px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px 20px 18px;
  position: relative;
  display: flex;
  flex-direction: column;
}

.lifecycle .stage:not(:last-child):after {
  content: "→";
  position: absolute;
  right: -28px;
  top: 155px;
  width: 20px;
  text-align: center;
  font-size: 15px;
  color: var(--accent);
  z-index: 2;
}

.lifecycle .stage.final {
  border-color: rgba(34, 211, 238, 0.3);
  background: linear-gradient(155deg, rgba(34, 211, 238, 0.035), transparent), var(--panel);
}

.stage-top { display: flex; align-items: center; gap: 12px; }

.lifecycle .stage h3 {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--muted);
}

.content { padding-top: 22px; flex: 1; }

.lead {
  font-size: 18px;
  line-height: 1.35;
  letter-spacing: -0.025em;
  margin: 0 0 12px;
  font-weight: 500;
}

.detail {
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0;
}

.detail strong { font-weight: 500; color: var(--text); }

.lane-label {
  display: inline-block;
  margin-top: 16px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 5px;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.writer-list {
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0 0 10px;
}

.lifecycle .race {
  margin-top: 14px;
  padding: 12px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 10px;
  color: var(--muted);
}

.dots { display: flex; gap: 3px; }

.dots i {
  display: block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

.lifecycle .race b { font-weight: 500; color: var(--accent); }

.lifecycle .role {
  margin-top: auto;
  padding: 14px 0 0;
  border: 0;
  border-top: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  font-size: 10px;
  line-height: 1.65;
}

.lifecycle .gate {
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 10px;
  min-height: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

.no-ship {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-size: 11px;
  color: var(--text);
}

.no-ship:before {
  content: "";
  height: 5px;
  width: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.lower {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
  margin-top: 22px;
  align-items: stretch;
}

.principle {
  padding: 16px 20px;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.small-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin: 0 0 10px;
}

.principle p:last-child {
  margin: 0;
  font-size: 15px;
  letter-spacing: -0.02em;
  line-height: 1.55;
  font-weight: 500;
}

.sidepaths { display: flex; gap: 12px; }

.sidepath {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  background: var(--panel);
  text-decoration: none;
}

.sidepath .label {
  font-size: 11px;
  color: var(--text);
  margin: 0 0 6px;
  font-weight: 500;
}

.sidepath p {
  font-size: 10px;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}

.sidepath span { color: var(--accent); }

/* Footer */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 22px 0 28px;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Tablet */

@media (max-width: 1180px) {
  .display { font-size: 44px; }

  .architecture,
  .desktop-flow,
  .writers .cards,
  .writer-row,
  .stages,
  .swimlanes {
    grid-template-columns: 1fr 1fr;
  }

  .architecture { gap: 16px; }
  .architecture .connector,
  .node:not(:last-child):after,
  .writers .card:before,
  .bus,
  .lifecycle .stage:not(:last-child):after,
  .skip-arc { display: none; }

  .review,
  .gates,
  .handoff,
  .notebook,
  .lower,
  .layer,
  .heading {
    grid-template-columns: 1fr;
    display: grid;
  }

  .heading { align-items: flex-start; }
  .lede { text-align: left; }
  .header-status .eyebrow { display: none; }
}

/* Mobile — plate 06 compression */

@media (max-width: 760px) {
  .wrap { width: calc(100% - 48px); }

  .site-header {
    padding: 14px 24px;
    flex-wrap: wrap;
  }

  .logo {
    width: 157px;
    height: 28px;
  }

  .nav-toggle { display: block; }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 20px;
    background: rgba(10, 10, 11, 0.98);
    border-bottom: 1px solid var(--line);
  }

  .site-nav.is-open { display: flex; }

  .site-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }

  .header-status { order: 2; }

  .hero {
    padding: 22px 0 28px;
  }

  .hero:before {
    background-image:
      linear-gradient(var(--line) 1px, transparent 1px),
      linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.16;
  }

  .hero h1 {
    font-size: 46px;
    line-height: 1.04;
    margin: 12px 0 14px;
  }

  .thesis {
    font-size: 13px;
    line-height: 1.65;
    max-width: 330px;
  }

  .subtitle { font-size: 9px; line-height: 1.6; margin-top: 10px; }

  .architecture,
  .diagram-label,
  .roles,
  .desktop-flow,
  .phases,
  .guardrail,
  .role-grid { display: none; }

  .loop { padding-top: 8px; border-top: 0; }

  .loop .heading { display: none; }

  .loop-head-mobile {
    display: flex;
    justify-content: space-between;
    align-items: center;
    order: -1;
    margin: 0 0 12px;
  }

  .loop .wrap {
    display: flex;
    flex-direction: column;
  }

  .loop-head-mobile span:last-child {
    font-size: 9px;
    color: var(--accent);
  }

  .mobile-loop {
    display: block;
    list-style: none;
    padding: 0;
    margin: 0;
    position: relative;
  }

  .mobile-loop:before {
    content: "";
    position: absolute;
    left: 14px;
    top: 19px;
    bottom: 36px;
    width: 1px;
    background: rgba(34, 211, 238, 0.25);
  }

  .mobile-loop .step {
    display: grid;
    grid-template-columns: 30px 1fr;
    gap: 12px;
    position: relative;
    margin-bottom: 10px;
  }

  .mobile-loop .num {
    width: 29px;
    height: 29px;
    font-size: 10px;
    background: var(--bg);
    margin-top: 8px;
    z-index: 1;
  }

  .mobile-loop .card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px 12px;
    min-height: 0;
  }

  .mobile-loop .card:before { display: none; }

  .mobile-loop h3 {
    font-size: 12px;
    line-height: 1.3;
    font-weight: 500;
    margin: 0 0 4px;
    letter-spacing: -0.01em;
  }

  .mobile-loop p {
    font-size: 10px;
    line-height: 1.55;
    color: var(--muted);
    margin: 0;
  }

  .role-chip {
    font-size: 8px;
    color: var(--muted);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 2px 5px;
    margin-left: 5px;
    font-weight: 400;
    vertical-align: 1px;
  }

  .writer-tags {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    margin-top: 7px;
  }

  .writer-tags span {
    font-size: 8px;
    color: var(--muted);
    background: var(--raised);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 4px 5px;
  }

  .mobile-loop .last { border-color: rgba(34, 211, 238, 0.3); }
  .mobile-loop .last h3 { color: var(--accent); }

  .display { font-size: 36px; }

  .writers .cards,
  .writer-row,
  .swimlanes,
  .stages,
  .sidepaths { grid-template-columns: 1fr; display: grid; }

  .writers .card { min-height: 220px; }
  .lane { min-height: 0; }
  .lifecycle .stage { min-height: 0; }

  .review,
  .gates,
  .handoff,
  .notebook,
  .lower,
  .boundary,
  .note,
  .race-top,
  .race-bottom,
  .site-footer .wrap {
    display: grid;
    grid-template-columns: 1fr;
    text-align: left;
  }

  .notebook .right { text-align: left; }
  .arrow { transform: rotate(90deg); }
  .site-footer .wrap { gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}