:root {
  --violet-wash: #eeeaff;
  --violet: #7459e8;
  --cyan-wash: #e3f5f6;
  --cyan: #18717a;
  --amber-wash: #fff0d7;
}

.app-hero {
  position: relative;
  overflow: hidden;
  padding: 78px 0 70px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(49,88,255,.035) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(rgba(49,88,255,.035) 1px, transparent 1px) 0 0 / 48px 48px,
    var(--paper);
}

.app-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .86fr) minmax(520px, 1.14fr);
  gap: 62px;
  align-items: center;
}

.app-hero h1 {
  margin: 22px 0 0;
  max-width: 680px;
  font-size: clamp(52px, 6.4vw, 88px);
  line-height: .91;
  letter-spacing: -.07em;
}

.app-hero h1 span { color: var(--blue); }
.app-hero-copy > p:not(.hero-note) { max-width: 650px; margin: 27px 0 0; color: var(--ink-soft); font-size: 19px; line-height: 1.62; }

/* Signature: one human instruction compiles into the app's complete operating envelope. */
.cloud-compiler {
  position: relative;
  border: 1px solid var(--ink);
  background: var(--white);
  box-shadow: 15px 15px 0 var(--blue-wash);
}

.cloud-compiler::after {
  content: "";
  position: absolute;
  z-index: 2;
  left: -1px;
  right: -1px;
  top: 102px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--orange), transparent);
  opacity: 0;
  animation: compile-scan 4.8s ease-in-out infinite;
  pointer-events: none;
}

.compiler-bar,
.compiler-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 43px;
  padding: 10px 14px;
  color: var(--muted);
  font: 500 9px/1.3 var(--mono);
  text-transform: uppercase;
  letter-spacing: .1em;
}

.compiler-bar { border-bottom: 1px solid var(--line); }
.compiler-status { display: inline-flex; align-items: center; gap: 7px; color: var(--mint-dark); }
.compiler-status i { width: 7px; height: 7px; border-radius: 50%; background: var(--mint-dark); box-shadow: 0 0 0 4px var(--mint); }
.instruction-line { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: center; min-height: 66px; padding: 16px 18px; background: var(--ink); color: var(--white); font: 500 13px/1.5 var(--mono); }
.instruction-mark { color: var(--orange); font-size: 20px; }
.compile-rule { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 12px 14px; color: var(--muted); font: 500 8px/1 var(--mono); text-transform: uppercase; letter-spacing: .11em; }
.compile-rule i { height: 1px; background: linear-gradient(90deg, var(--orange), var(--blue)); }
.capability-matrix { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0 14px; border-top: 1px solid var(--line-strong); border-left: 1px solid var(--line-strong); }
.capability { min-height: 90px; display: grid; align-content: center; gap: 4px; padding: 13px; border-right: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); background: var(--white); }
.capability:nth-child(2), .capability:nth-child(6), .capability:nth-child(7) { background: var(--violet-wash); }
.capability:nth-child(3), .capability:nth-child(8) { background: var(--cyan-wash); }
.capability:nth-child(4), .capability:nth-child(9) { background: var(--amber-wash); }
.capability.primary { background: var(--blue); color: var(--white); }
.capability span { font: 600 8px/1 var(--mono); letter-spacing: .11em; color: var(--blue-dark); }
.capability.primary span { color: rgba(255,255,255,.62); }
.capability b { font-size: 13px; letter-spacing: -.02em; }
.capability small { color: var(--muted); font: 9px/1.4 var(--mono); }
.capability.primary small { color: rgba(255,255,255,.65); }
.compiler-foot { justify-content: center; margin-top: 14px; border-top: 1px solid var(--line); text-transform: none; letter-spacing: 0; }
.compiler-foot b { color: var(--ink); font-weight: 600; }
.flow-arrow { color: var(--orange); }

@keyframes compile-scan {
  0%, 20% { top: 104px; opacity: 0; }
  28% { opacity: .8; }
  66% { top: calc(100% - 46px); opacity: .55; }
  75%, 100% { top: calc(100% - 46px); opacity: 0; }
}

.stack-ledger { border: 1px solid var(--line-strong); background: var(--white); }
.ledger-row { display: grid; grid-template-columns: 150px minmax(0, 1.25fr) minmax(260px, .75fr); gap: 24px; align-items: center; min-height: 92px; padding: 18px 21px; border-bottom: 1px solid var(--line); }
.ledger-row:last-child { border-bottom: 0; }
.ledger-head { min-height: 42px; color: var(--muted); background: var(--paper); font: 500 9px/1.2 var(--mono); text-transform: uppercase; letter-spacing: .09em; }
.layer-name { display: flex; align-items: center; gap: 11px; font-size: 17px; font-weight: 600; letter-spacing: -.03em; }
.layer-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--blue); }
.layer-dot.data { background: var(--violet); }
.layer-dot.connect { background: var(--orange); }
.layer-dot.operate { background: var(--cyan); }
.ledger-caps { display: flex; flex-wrap: wrap; gap: 7px; }
.ledger-caps span { padding: 7px 9px; border: 1px solid var(--line); background: var(--paper); font: 500 10px/1.2 var(--mono); }
.ledger-row p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.ledger-note { margin: 13px 0 0; color: var(--muted); font: 10px/1.5 var(--mono); text-align: right; }

.operating { background: var(--blue-wash); }
.responsibility-flow { display: grid; grid-template-columns: 1fr 46px 1fr 46px 1fr; align-items: stretch; }
.responsibility-flow article { min-width: 0; padding: 26px; border: 1px solid var(--line-strong); background: var(--white); }
.flow-owner { color: var(--blue-dark); font: 500 9px/1 var(--mono); text-transform: uppercase; letter-spacing: .11em; }
.responsibility-flow h3 { margin: 30px 0 16px; font-size: 24px; line-height: 1.05; letter-spacing: -.04em; }
.responsibility-flow blockquote { margin: 0; color: var(--ink); font-size: 19px; line-height: 1.42; letter-spacing: -.025em; }
.responsibility-flow p { margin: 18px 0 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.responsibility-flow ul { list-style: none; margin: 0; padding: 0; }
.responsibility-flow li { position: relative; padding: 10px 0 10px 20px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 13px; line-height: 1.45; }
.responsibility-flow li::before { content: "·"; position: absolute; left: 3px; color: var(--orange); font-weight: 700; }
.flow-connector { display: grid; place-items: center; color: var(--blue); font: 500 20px/1 var(--mono); }

.environment-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(500px, 1.2fr); gap: 64px; align-items: center; }
.environment-copy h2 { margin: 13px 0 0; max-width: 580px; font-size: clamp(38px, 4.8vw, 62px); line-height: .97; letter-spacing: -.06em; }
.environment-copy > p { margin: 21px 0 0; max-width: 600px; color: var(--ink-soft); font-size: 16px; line-height: 1.68; }
.environment-rail { display: grid; grid-template-columns: 1fr 140px 1fr; align-items: center; }
.env-card { min-height: 210px; padding: 21px; border: 1px solid var(--line-strong); background: var(--paper); }
.env-card.active { box-shadow: 10px 10px 0 var(--mint); }
.env-card.gated { box-shadow: 10px 10px 0 var(--amber-wash); }
.env-name { font: 600 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; }
.env-state { float: right; color: var(--muted); font: 500 8px/1.2 var(--mono); }
.env-card.active .env-state { color: var(--mint-dark); }
.env-card b { display: block; margin-top: 68px; font-size: 20px; letter-spacing: -.035em; }
.env-card small { display: block; margin-top: 8px; color: var(--muted); font: 9px/1.5 var(--mono); }
.evidence-gate { display: grid; gap: 9px; align-items: center; color: var(--blue-dark); text-align: center; font: 500 8px/1.3 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.evidence-gate i { height: 2px; background: linear-gradient(90deg, var(--mint-dark), var(--orange)); }
.evidence-gate small { color: var(--muted); font-size: 7px; line-height: 1.45; text-transform: none; letter-spacing: 0; }

.receipt-section { background: var(--violet-wash); }
.app-receipt { box-shadow-color: var(--blue); }
.honest-fit { background: var(--white); }
.fit-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-strong); border-left: 1px solid var(--line-strong); }
.fit-grid article { min-height: 250px; padding: 25px; border-right: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
.fit-label { display: inline-flex; padding: 6px 8px; font: 500 8px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.fit-label.no { background: var(--paper); color: var(--muted); }
.fit-label.yes { background: var(--mint); color: var(--mint-dark); }
.fit-grid h3 { margin: 54px 0 12px; font-size: 23px; line-height: 1.08; letter-spacing: -.04em; }
.fit-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.deploy-section { background: var(--blue-wash); }
.app-final { background: var(--blue-dark); }
.app-final .button-primary { background: var(--orange); border-color: var(--orange); }

@media (max-width: 1040px) {
  .app-hero-grid { grid-template-columns: 1fr; gap: 50px; }
  .cloud-compiler { max-width: 720px; }
  .ledger-row { grid-template-columns: 120px 1fr; }
  .ledger-row > p { grid-column: 2; }
  .ledger-head span:last-child { display: none; }
  .responsibility-flow { grid-template-columns: 1fr; gap: 0; }
  .flow-connector { min-height: 48px; transform: rotate(90deg); }
  .environment-grid { grid-template-columns: 1fr; }
  .environment-rail { max-width: 720px; }
}

@media (max-width: 720px) {
  .app-hero { padding: 54px 0 48px; }
  .app-hero h1 { font-size: clamp(46px, 14vw, 68px); }
  .app-hero-copy > p:not(.hero-note) { font-size: 17px; }
  .capability { min-height: 82px; padding: 10px; }
  .capability b { font-size: 11px; }
  .compiler-foot { flex-wrap: wrap; justify-content: flex-start; }
  .ledger-row, .ledger-head { grid-template-columns: 1fr; gap: 12px; }
  .ledger-head span:not(:first-child) { display: none; }
  .ledger-row > p { grid-column: 1; }
  .ledger-note { text-align: left; }
  .environment-rail { grid-template-columns: 1fr; }
  .evidence-gate { min-height: 90px; }
  .evidence-gate i { width: 2px; height: 42px; margin: 0 auto; background: linear-gradient(var(--mint-dark), var(--orange)); }
  .fit-grid { grid-template-columns: 1fr; }
  .fit-grid article { min-height: 0; }
  .fit-grid h3 { margin-top: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  .cloud-compiler::after { display: none; }
}