:root {
  --ink: #2a2226;
  --paper: #fffefa;
  --signal: #a6335d;
  --proof: #54705f;
  --boundary: #c28a2c;
  --rule: #d2cbc1;
  --muted: #71696a;
  --night: #111c25;
  --night-2: #182832;
  --ice: #b8d6d9;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --display: "Arial Narrow", "Avenir Next Condensed", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--display);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.7rem;
  left: 0.7rem;
  padding: 0.65rem 0.9rem;
  color: var(--paper);
  background: var(--signal);
  transform: translateY(-180%);
}

.skip-link:focus { transform: translateY(0); }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  gap: clamp(2rem, 7vw, 8rem);
  align-items: center;
  min-height: min(760px, calc(100svh - 58px));
  padding: clamp(4rem, 8vw, 8rem) clamp(1.25rem, 7vw, 7rem);
  overflow: hidden;
  color: var(--paper);
  background: var(--night);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.26;
  background-image: linear-gradient(rgba(184, 214, 217, 0.16) 1px, transparent 1px), linear-gradient(90deg, rgba(184, 214, 217, 0.16) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: linear-gradient(90deg, black, transparent 88%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 7px;
  background: var(--signal);
}

.hero-copy, .hero-visual { position: relative; z-index: 1; }

.kicker, .section-label, .panel-topline, .slab-head, .slab-row, .slab-total, .mono-muted, .result-state, .site-footer {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 1.5rem;
  color: var(--ice);
}

.pulse, .slab-status i {
  width: 0.55rem;
  height: 0.55rem;
  display: inline-block;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 5px rgba(166, 51, 93, 0.18);
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 850px;
  margin-bottom: 1.4rem;
  font-size: clamp(3.1rem, 7vw, 7.5rem);
  font-weight: 900;
  letter-spacing: -0.075em;
  line-height: 0.87;
  text-transform: uppercase;
}

h1 em, h2 em { color: var(--ice); font-style: normal; }

.hero-lede {
  max-width: 650px;
  margin-bottom: 1.8rem;
  color: rgba(255, 254, 250, 0.78);
  font-size: clamp(1.05rem, 1.5vw, 1.35rem);
}

.hero-actions, .closing-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: center; }

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.78rem 1rem;
  border: 1px solid transparent;
  font-family: var(--mono);
  font-size: 0.73rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.button:hover, .button:focus-visible { transform: translateY(-2px); }

.button:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid var(--boundary); outline-offset: 3px; }

.button-primary { color: var(--paper); background: var(--signal); }
.button-primary:hover, .button-primary:focus-visible { color: var(--ink); background: var(--ice); }
.button-quiet { color: var(--paper); border-color: rgba(255, 254, 250, 0.38); }
.button-quiet:hover, .button-quiet:focus-visible { color: var(--night); background: var(--paper); border-color: var(--paper); }

.hero-boundary {
  max-width: 610px;
  margin: 1.6rem 0 0;
  color: rgba(255, 254, 250, 0.56);
  font-size: 0.87rem;
}

.hero-boundary strong { color: var(--boundary); }

.hero-visual { min-height: 440px; display: grid; place-items: center; }

.quote-slab {
  position: relative;
  width: min(100%, 470px);
  padding: 1.15rem;
  border: 1px solid rgba(184, 214, 217, 0.35);
  background: rgba(24, 40, 50, 0.9);
  box-shadow: 18px 18px 0 rgba(166, 51, 93, 0.84);
  animation: slab-in 900ms 120ms both cubic-bezier(0.2, 0.8, 0.2, 1);
}

.slab-head, .slab-row, .slab-total { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.slab-head { padding-bottom: 1rem; color: var(--ice); border-bottom: 1px solid rgba(184, 214, 217, 0.25); }
.slab-status { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--paper); font-size: 0.62rem; }
.slab-status i { width: 0.4rem; height: 0.4rem; box-shadow: none; }
.slab-row { padding: 1.05rem 0; color: rgba(255, 254, 250, 0.6); border-bottom: 1px solid rgba(184, 214, 217, 0.15); }
.slab-row b { color: var(--paper); font-size: 0.8rem; font-weight: 600; letter-spacing: 0; text-transform: none; }
.slab-total { padding-top: 1.2rem; color: var(--boundary); }
.slab-total strong { color: var(--paper); font-size: 1rem; letter-spacing: 0; text-transform: none; }

.trace-line { position: absolute; width: 90%; height: 1px; background: var(--ice); opacity: 0.35; transform-origin: left; }
.trace-line-a { top: 20%; left: 0; transform: rotate(22deg); }
.trace-line-b { right: -4%; bottom: 16%; transform: rotate(-18deg); }
.trace-label { position: absolute; color: var(--ice); font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; }
.trace-label-a { top: 10%; left: 5%; }
.trace-label-b { right: 2%; bottom: 8%; }
.hero-stamp { position: absolute; right: 2%; top: 23%; padding: 0.45rem; color: var(--night); background: var(--boundary); font-family: var(--mono); font-size: 0.62rem; font-weight: 700; line-height: 1.15; letter-spacing: 0.08em; transform: rotate(8deg); }

.signal-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; color: var(--paper); background: var(--rule); }
.signal-strip span { min-height: 78px; display: flex; align-items: center; justify-content: center; padding: 1rem; background: var(--proof); font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.06em; text-align: center; text-transform: uppercase; }
.signal-strip span:nth-child(2n) { background: var(--ink); }
.signal-strip b { margin-right: 0.42rem; color: var(--ice); font-size: 0.95rem; }

.prototype-section, .evidence-section, .architecture-section, .closing-section { padding: clamp(4rem, 8vw, 8rem) clamp(1.25rem, 7vw, 7rem); }
.prototype-section { background: var(--paper); }
.section-heading { max-width: 700px; margin-bottom: 3rem; }
.section-heading.compact { margin-bottom: 2.3rem; }
.section-label { display: inline-flex; align-items: center; gap: 0.6rem; margin-bottom: 1.3rem; color: var(--signal); }
.section-label::before { content: ""; width: 1.5rem; height: 2px; display: inline-block; background: currentColor; }
h2 { margin-bottom: 1rem; font-size: clamp(2.7rem, 5.6vw, 6.2rem); font-weight: 900; letter-spacing: -0.07em; line-height: 0.88; text-transform: uppercase; }
.section-heading p:not(.section-label), .architecture-copy > p:not(.section-label), .closing-section > p:not(.section-label) { max-width: 590px; color: var(--muted); font-size: 1.05rem; }

.prototype-grid { display: grid; grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr); gap: clamp(1.5rem, 4vw, 4rem); align-items: start; }
.request-panel, .result-panel { padding: clamp(1.1rem, 2vw, 1.8rem); border-top: 4px solid var(--ink); background: #f3eee5; }
.result-panel { min-height: 490px; color: var(--paper); background: var(--night); border-top-color: var(--signal); }
.panel-topline { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.35rem; color: var(--proof); }
.result-panel .panel-topline { color: var(--ice); }
.mono-muted { color: var(--muted); font-size: 0.62rem; letter-spacing: 0.05em; }
.request-panel label { display: block; margin-bottom: 0.55rem; color: var(--ink); font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.05em; text-transform: uppercase; }
textarea, input[type="number"] { width: 100%; border: 1px solid var(--rule); border-radius: 0; color: var(--ink); background: var(--paper); font: 0.98rem/1.55 var(--display); }
textarea { min-height: 170px; padding: 0.9rem; resize: vertical; }
.form-row { display: flex; gap: 1rem; align-items: end; margin-top: 1.1rem; }
.form-row > label { flex: 1; margin: 0; }
.form-row input[type="number"] { display: block; max-width: 145px; margin-top: 0.45rem; padding: 0.65rem; font-family: var(--mono); }
.check-label { display: flex !important; align-items: center; gap: 0.55rem; padding-bottom: 0.72rem; white-space: nowrap; }
.check-label input { width: 1rem; height: 1rem; accent-color: var(--signal); }
.sample-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.4rem 0; }
.sample-button { padding: 0.55rem 0.7rem; border: 1px solid var(--rule); color: var(--muted); background: transparent; font: 0.66rem var(--mono); letter-spacing: 0.04em; text-transform: uppercase; cursor: pointer; }
.sample-button:hover, .sample-button:focus-visible { color: var(--ink); border-color: var(--signal); background: rgba(166, 51, 93, 0.08); }
.run-button { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.9rem 1rem; border: 0; color: var(--paper); background: var(--signal); font: 0.76rem var(--mono); letter-spacing: 0.05em; text-transform: uppercase; cursor: pointer; transition: background 180ms ease, color 180ms ease, transform 180ms ease; }
.run-button:hover, .run-button:focus-visible { color: var(--ink); background: var(--ice); transform: translateY(-2px); }
.form-note { margin: 1rem 0 0; color: var(--muted); font-size: 0.84rem; }

.result-state { color: var(--boundary); }
.result-state.is-pass { color: var(--ice); }
.result-content { min-height: 410px; }
.result-empty { min-height: 390px; display: grid; place-content: center; justify-items: center; gap: 1rem; color: rgba(255, 254, 250, 0.62); text-align: center; }
.empty-mark { color: var(--signal); font: 3rem/1 var(--mono); }
.result-empty p { max-width: 250px; }
.quote-result { animation: result-in 350ms ease both; }
.decision-banner { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding: 0.8rem 0; border-bottom: 1px solid rgba(184, 214, 217, 0.24); }
.decision-banner strong { color: var(--ice); font-size: 1.05rem; text-transform: uppercase; }
.decision-banner span { color: rgba(255, 254, 250, 0.62); font: 0.68rem var(--mono); text-transform: uppercase; }
.quote-lines { margin: 1rem 0 0; }
.quote-line { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1rem; padding: 0.75rem 0; border-bottom: 1px solid rgba(184, 214, 217, 0.14); }
.quote-line p { margin: 0; }
.line-main { color: var(--paper); font-size: 0.98rem; }
.line-meta { margin-top: 0.25rem !important; color: rgba(255, 254, 250, 0.52); font: 0.62rem var(--mono); text-transform: uppercase; }
.line-price { align-self: center; color: var(--ice); font: 0.82rem var(--mono); white-space: nowrap; }
.quote-line.is-exception .line-main, .quote-line.is-exception .line-price { color: var(--boundary); }
.quote-summary { margin-top: 1.1rem; padding-top: 0.5rem; border-top: 1px solid rgba(184, 214, 217, 0.35); }
.summary-row { display: flex; justify-content: space-between; gap: 1rem; padding: 0.3rem 0; color: rgba(255, 254, 250, 0.65); font: 0.7rem var(--mono); }
.summary-row strong { color: var(--paper); font-weight: 500; }
.summary-row.total { margin-top: 0.35rem; padding-top: 0.7rem; color: var(--ice); border-top: 1px solid rgba(184, 214, 217, 0.24); }
.summary-row.total strong { color: var(--paper); font-size: 1rem; }
.exception-note { margin: 1rem 0 0; padding: 0.75rem; color: var(--boundary); background: rgba(194, 138, 44, 0.12); font-size: 0.82rem; }
.result-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1rem; }
.mini-note { flex: 1 1 220px; align-self: center; color: rgba(255, 254, 250, 0.55); font: 0.62rem/1.35 var(--mono); letter-spacing: 0.04em; text-transform: uppercase; }
.mini-button { padding: 0.58rem 0.7rem; border: 1px solid rgba(184, 214, 217, 0.35); color: var(--ice); background: transparent; font: 0.65rem var(--mono); letter-spacing: 0.04em; text-transform: uppercase; cursor: pointer; }
.mini-button:hover, .mini-button:focus-visible { color: var(--night); background: var(--ice); }

.evidence-section { color: var(--paper); background: var(--ink); }
.evidence-section .section-label { color: var(--ice); }
.evidence-section .section-heading p:not(.section-label) { color: rgba(255, 254, 250, 0.66); }
.evidence-ledger { border-top: 1px solid rgba(255, 254, 250, 0.3); }
.evidence-row { display: grid; grid-template-columns: 0.22fr 1fr 1.5fr 0.35fr; gap: 1rem; align-items: center; min-height: 66px; padding: 0.85rem 0; border-bottom: 1px solid rgba(255, 254, 250, 0.18); font-size: 0.94rem; }
.evidence-head { color: rgba(255, 254, 250, 0.5); font: 0.63rem var(--mono); letter-spacing: 0.09em; text-transform: uppercase; }
.evidence-row .index, .evidence-row b { font-family: var(--mono); }
.evidence-row .index { color: var(--ice); }
.evidence-row b { text-align: right; }
.evidence-row b.pass { color: var(--ice); }

.architecture-section { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(2rem, 8vw, 9rem); align-items: start; }
.architecture-copy { max-width: 560px; }
.text-link { display: inline-flex; align-items: center; gap: 0.7rem; margin-top: 1.1rem; color: var(--proof); font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.05em; text-transform: uppercase; }
.text-link:hover, .text-link:focus-visible { color: var(--signal); }
.architecture-list { margin: 0; padding: 0; list-style: none; border-top: 2px solid var(--ink); }
.architecture-list li { display: grid; grid-template-columns: 3.5rem 1fr; gap: 1rem; padding: 1.2rem 0; border-bottom: 1px solid var(--rule); }
.architecture-list li > span { color: var(--signal); font: 0.75rem var(--mono); }
.architecture-list b { font-size: 1.2rem; }
.architecture-list p { margin: 0.3rem 0 0; color: var(--muted); }

.closing-section { color: var(--paper); background: var(--proof); }
.closing-section .section-label { color: var(--ice); }
.closing-section > p:not(.section-label) { color: rgba(255, 254, 250, 0.78); }
.closing-section h2 em { color: var(--paper); }
.closing-actions { margin-top: 2rem; }
.closing-section .button-primary { color: var(--ink); background: var(--ice); }
.closing-section .button-primary:hover, .closing-section .button-primary:focus-visible { color: var(--paper); background: var(--signal); }
.closing-section .button-quiet { border-color: rgba(255, 254, 250, 0.55); }
.closing-note { max-width: 660px; margin: 2.4rem 0 0; color: rgba(255, 254, 250, 0.62) !important; font-size: 0.82rem !important; }
.closing-note strong { color: var(--boundary); }
.site-footer { display: flex; flex-wrap: wrap; gap: 1.2rem; align-items: center; padding: 1.2rem clamp(1.25rem, 7vw, 7rem); color: rgba(255, 254, 250, 0.6); background: var(--night); }
.site-footer span { margin-right: auto; }
.site-footer a { color: var(--ice); text-decoration: none; }
.site-footer a:hover, .site-footer a:focus-visible { color: var(--paper); }

@keyframes slab-in { from { opacity: 0; transform: translate(26px, 14px) rotate(2deg); } to { opacity: 1; transform: translate(0, 0) rotate(0); } }
@keyframes result-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 900px) {
  .hero, .prototype-grid, .architecture-section { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-visual { min-height: 380px; }
  .architecture-section { gap: 3rem; }
}

@media (max-width: 620px) {
  .romeoapps-brandbar__meta { align-items: flex-start; flex-direction: column; gap: 0.25rem; }
  .signal-strip { grid-template-columns: repeat(2, 1fr); }
  .signal-strip span { min-height: 68px; font-size: 0.6rem; }
  h1 { font-size: clamp(3rem, 15vw, 5.2rem); }
  h2 { font-size: clamp(2.7rem, 13vw, 4.6rem); }
  .hero-visual { min-height: 330px; }
  .quote-slab { box-shadow: 10px 10px 0 rgba(166, 51, 93, 0.84); }
  .trace-label { display: none; }
  .form-row { align-items: stretch; flex-direction: column; }
  .check-label { padding-bottom: 0; }
  .evidence-row { grid-template-columns: 2.4rem 1fr 0.4fr; gap: 0.65rem; }
  .evidence-row span:nth-child(3) { grid-column: 2 / -1; grid-row: 2; color: rgba(255, 254, 250, 0.6); font-size: 0.85rem; }
  .evidence-head { display: none; }
  .evidence-row b { grid-column: 3; grid-row: 1; }
  .site-footer span { flex-basis: 100%; margin-bottom: 0.45rem; }
}

@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; }
}