:root {
  --ink: #101722;
  --ink-2: #172131;
  --paper: #f3efe4;
  --paper-2: #e9e2d3;
  --orange: #ff6534;
  --orange-dark: #d94318;
  --green: #96d969;
  --cyan: #7adce4;
  --line: #b8b1a3;
  --white: #fffdf6;
  --muted: #656a70;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); line-height: 1.55; }
a { color: inherit; text-underline-offset: .18em; }
img { max-width: 100%; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; background: var(--orange); color: var(--ink); padding: .75rem 1rem; font-weight: 800; }
.skip-link:focus { top: 1rem; }

.site-header { height: 76px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 0 clamp(1.25rem, 4vw, 4.5rem); border-bottom: 1px solid rgba(16,23,34,.22); background: rgba(243,239,228,.92); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 20; }
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; font-weight: 900; letter-spacing: -.04em; font-size: 1.2rem; }
.brand img { width: 58px; height: 38px; object-fit: contain; }
.site-header nav { display: flex; gap: clamp(1rem, 2.5vw, 2.25rem); }
.site-header nav a { text-decoration: none; font: 700 .76rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.site-header nav a:hover, .site-header nav a:focus-visible { color: var(--orange-dark); }
.header-cta { justify-self: end; background: var(--ink); color: var(--white); text-decoration: none; padding: .72rem 1rem; font: 700 .78rem/1 var(--mono); }

.hero { min-height: calc(100vh - 76px); padding: clamp(4.5rem, 9vw, 9rem) clamp(1.25rem, 6vw, 7.5rem) 5rem; display: grid; grid-template-columns: minmax(0, 1.14fr) minmax(360px, .86fr); gap: clamp(3rem, 7vw, 8rem); align-items: center; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -2; background-image: linear-gradient(rgba(16,23,34,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(16,23,34,.055) 1px, transparent 1px); background-size: 32px 32px; mask-image: linear-gradient(to bottom, #000, transparent 92%); }
.hero::after { content: "COURSE / WERK"; position: absolute; right: -1rem; bottom: -4.5rem; z-index: -1; font-weight: 950; font-size: clamp(6rem, 15vw, 15rem); letter-spacing: -.09em; color: rgba(16,23,34,.035); white-space: nowrap; }
.eyebrow, .kicker { font: 800 .72rem/1.2 var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.status-dot { display: inline-block; width: .65rem; height: .65rem; border-radius: 50%; margin-right: .55rem; background: var(--orange); box-shadow: 0 0 0 5px rgba(255,101,52,.15); }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 880px; margin: 1.35rem 0 1.65rem; font-size: clamp(3.6rem, 7vw, 7.5rem); line-height: .91; letter-spacing: -.072em; font-weight: 900; }
h1 em { color: var(--orange-dark); font-family: Georgia, serif; font-weight: 500; }
.lede { max-width: 700px; font-size: clamp(1.05rem, 1.5vw, 1.35rem); color: #424850; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin: 2rem 0 3rem; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 1.25rem; padding: .8rem 1.2rem; text-decoration: none; font: 800 .78rem/1 var(--mono); letter-spacing: .03em; border: 1px solid var(--ink); }
.button.primary { background: var(--orange); box-shadow: 5px 5px 0 var(--ink); }
.button.primary:hover { transform: translate(2px,2px); box-shadow: 3px 3px 0 var(--ink); }
.button.ghost { background: rgba(255,255,255,.25); }
.hero-facts { display: flex; gap: clamp(1.5rem, 4vw, 4rem); margin: 0; padding: 0; list-style: none; }
.hero-facts li { display: grid; grid-template-columns: auto 1fr; gap: .5rem; align-items: center; max-width: 145px; }
.hero-facts strong { color: var(--orange-dark); font: 900 2.2rem/1 var(--mono); }
.hero-facts span { font: 650 .72rem/1.25 var(--mono); text-transform: uppercase; }

.console { position: relative; background: var(--ink); color: #d8e0e5; box-shadow: 18px 18px 0 var(--orange), 19px 19px 0 var(--ink); transform: rotate(1.2deg); }
.console-bar { height: 42px; display: flex; align-items: center; gap: .4rem; padding: 0 1rem; border-bottom: 1px solid #344154; }
.console-bar span { width: 9px; height: 9px; border: 1px solid #758198; border-radius: 50%; }
.console-bar span:first-child { background: var(--orange); border-color: var(--orange); }
.console-bar b { margin-left: auto; font: 600 .62rem/1 var(--mono); color: #8d9aae; }
.console-body { padding: clamp(1.3rem, 3vw, 2.3rem); }
.console-label { color: var(--cyan); font: 800 .7rem/1 var(--mono); letter-spacing: .14em; }
.check { display: grid; grid-template-columns: 2rem 1fr auto; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid #2f3b4d; font: 650 .78rem/1.2 var(--mono); }
.check i { color: #6f7c90; font-style: normal; }
.check b { color: var(--green); font-size: .68rem; }
.console-output { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: .2rem 1rem; margin-top: 2rem; padding: 1.2rem; color: var(--ink); background: var(--green); }
.console-output span { font: 700 .7rem/1 var(--mono); }
.console-output strong { grid-row: span 2; font: 950 3.4rem/.8 var(--mono); }
.console-output small { font: 700 .66rem/1 var(--mono); text-transform: uppercase; }
.stamp { position: absolute; right: -2.2rem; top: -2rem; width: 90px; height: 90px; display: grid; place-content: center; text-align: center; border-radius: 50%; border: 2px solid var(--ink); background: var(--paper); color: var(--ink); font: 900 .65rem/1.15 var(--mono); text-transform: uppercase; transform: rotate(11deg); }

.signal-band { background: var(--orange); border-block: 2px solid var(--ink); overflow: hidden; min-height: 52px; display: flex; align-items: center; justify-content: space-around; gap: 1.4rem; padding: .8rem 1rem; font: 900 .68rem/1 var(--mono); letter-spacing: .11em; white-space: nowrap; }
.signal-band i { font-style: normal; font-size: .55rem; }

.section { padding: clamp(5rem, 9vw, 9rem) clamp(1.25rem, 6vw, 7.5rem); }
.section-heading { display: grid; grid-template-columns: .55fr 1.25fr 1fr; gap: clamp(1.5rem, 4vw, 4rem); align-items: start; margin-bottom: clamp(3.5rem, 7vw, 6.5rem); }
.section-heading .kicker { color: var(--orange-dark); }
.section-heading h2 { margin: 0; font-size: clamp(2.5rem, 4.7vw, 5rem); line-height: .97; letter-spacing: -.06em; }
.section-heading > p:last-child { margin: .25rem 0 0; max-width: 520px; color: var(--muted); font-size: 1.02rem; }
.section-heading.inverse { color: var(--white); }
.section-heading.inverse > p:last-child { color: #aeb9c7; }
.section-heading.inverse .kicker { color: var(--orange); }

.pipeline { display: grid; grid-template-columns: repeat(5, 1fr); border: 1px solid var(--ink); }
.pipeline-step { min-height: 270px; padding: 1.2rem; border-right: 1px solid var(--ink); position: relative; }
.pipeline-step:last-child { border-right: 0; }
.pipeline-step > span { color: #888a87; font: 700 .7rem/1 var(--mono); }
.pipeline-step > b { float: right; font: 900 .66rem/1 var(--mono); color: var(--orange-dark); }
.pipeline-step h3 { margin: 5rem 0 .8rem; font-size: 1.25rem; line-height: 1.1; }
.pipeline-step p { margin: 0; color: var(--muted); font-size: .88rem; }
.pipeline-step.hot { background: var(--orange); transform: translateY(-12px); box-shadow: 0 12px 0 var(--ink); }
.pipeline-step.hot p { color: var(--ink); }
.pipeline-step.hot > b { color: var(--ink); }
.pain-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 6rem; background: var(--line); border: 1px solid var(--line); }
.pain-grid article { background: var(--paper); padding: 2rem; }
.pain-grid .icon { font-size: 2rem; color: var(--orange-dark); }
.pain-grid h3 { margin: 2rem 0 .6rem; font-size: 1.05rem; }
.pain-grid p { margin: 0; color: var(--muted); font-size: .9rem; }

.assurance, .revision { color: var(--white); background-color: var(--ink); background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px); background-size: 40px 40px; }
.assurance-layout { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(2.5rem, 6vw, 7rem); }
.rules { margin: 0; padding: 0; list-style: none; }
.rules li { display: grid; grid-template-columns: 4rem 1fr; gap: 1rem; padding: 1.6rem 0; border-top: 1px solid #3a4556; }
.rules li > span { color: var(--orange); font: 800 1rem/1 var(--mono); }
.rules h3 { margin-bottom: .45rem; font-size: 1.25rem; }
.rules p { max-width: 720px; margin: 0; color: #aeb9c7; }
.boundary-card { align-self: start; padding: clamp(1.7rem, 3vw, 2.6rem); background: var(--orange); color: var(--ink); box-shadow: 12px 12px 0 var(--green); }
.card-label { font: 900 .68rem/1 var(--mono); letter-spacing: .14em; }
.boundary-card h3 { margin: 3rem 0 1rem; font-size: clamp(1.65rem, 2.4vw, 2.4rem); line-height: 1.04; letter-spacing: -.04em; }
.boundary-row { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid rgba(16,23,34,.4); }
.boundary-row span { display: block; font: 800 .65rem/1 var(--mono); text-transform: uppercase; }
.boundary-row b { display: block; margin-top: .45rem; font-size: .84rem; }

.carrier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }
.carrier { min-height: 390px; display: flex; flex-direction: column; padding: 1.8rem; border: 1px solid var(--ink); position: relative; overflow: hidden; }
.carrier::after { content: ""; position: absolute; width: 180px; height: 180px; right: -80px; top: -80px; border-radius: 50%; border: 28px solid rgba(16,23,34,.12); }
.carrier.web { background: var(--cyan); }
.carrier.slides { background: var(--orange); }
.carrier.print { background: var(--green); }
.carrier-number { font: 900 clamp(1.6rem, 2.5vw, 2.7rem)/1 var(--mono); letter-spacing: -.07em; }
.carrier-type { margin-top: 3rem; font: 900 .65rem/1 var(--mono); letter-spacing: .12em; }
.carrier h3 { margin: 1rem 0; max-width: 340px; font-size: 1.55rem; line-height: 1.05; }
.carrier p:not(.carrier-type) { color: #283341; }
.carrier > span { margin-top: auto; font: 800 .72rem/1 var(--mono); }
.portability-note { margin: 1.5rem 0 0; padding: 1rem 1.2rem; border-left: 4px solid var(--orange-dark); background: var(--paper-2); font-size: .9rem; }
.deliverables { margin-top: 7rem; display: grid; grid-template-columns: .7fr 1.3fr; gap: 4rem; }
.deliverable-intro h3 { font-size: 2rem; line-height: 1.05; }
.deliverables ol { margin: 0; padding: 0; list-style: none; border-top: 2px solid var(--ink); }
.deliverables li { display: grid; grid-template-columns: 1fr 1fr; padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.deliverables li b::before { content: counter(list-item, decimal-leading-zero) "  "; color: var(--orange-dark); font: 800 .7rem/1 var(--mono); }
.deliverables li span { color: var(--muted); }

.revision-demo { display: grid; grid-template-columns: .8fr auto 1.2fr; gap: 2rem; align-items: center; max-width: 1000px; margin: 0 auto; }
.edit-card, .impact-stack { padding: 1.6rem; border: 1px solid #657188; background: var(--ink-2); }
.edit-card > span, .impact-stack > p { color: var(--orange); font: 900 .66rem/1 var(--mono); letter-spacing: .12em; }
.edit-card code { display: block; margin: 2rem 0 1rem; color: var(--cyan); }
.edit-card p { color: #aeb9c7; }
.impact-arrow { font-size: 2.5rem; color: var(--orange); }
.impact-stack span { display: block; padding: .75rem 0; border-top: 1px solid #394659; color: var(--green); font: 650 .8rem/1.2 var(--mono); }
.dual-ledger { display: flex; align-items: center; justify-content: center; gap: 1.5rem; margin-top: 5rem; }
.dual-ledger > div { min-width: 180px; padding: 1rem; border: 1px solid #59657a; text-align: center; }
.dual-ledger strong, .dual-ledger span { display: block; }
.dual-ledger strong { color: var(--cyan); font: 900 1.4rem/1 var(--mono); }
.dual-ledger span { margin-top: .5rem; color: #aeb9c7; font-size: .75rem; }
.dual-ledger .result { background: var(--green); border-color: var(--green); }
.dual-ledger .result strong, .dual-ledger .result span { color: var(--ink); }

.limits { background: var(--paper-2); }
.limits-grid { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--ink); }
.limits-grid article { padding: clamp(1.8rem, 4vw, 4rem); }
.limits-grid article + article { border-left: 1px solid var(--ink); }
.limits-grid article > span { display: inline-block; padding: .35rem .5rem; background: var(--ink); color: var(--white); font: 900 .65rem/1 var(--mono); }
.limits-grid article:last-child > span { background: var(--orange); color: var(--ink); }
.limits-grid h3 { margin: 2rem 0; font-size: 1.7rem; }
.limits-grid ul { margin: 0; padding-left: 1.2rem; }
.limits-grid li { margin: .75rem 0; color: var(--muted); }

.start { padding: clamp(5rem, 9vw, 9rem) clamp(1.25rem, 8vw, 10rem); color: var(--white); background: var(--orange-dark); }
.start h2 { max-width: 1000px; font-size: clamp(2.7rem, 5.5vw, 6rem); line-height: .95; letter-spacing: -.06em; }
.prompt-box { margin-top: 3rem; border: 2px solid var(--ink); box-shadow: 10px 10px 0 var(--ink); background: var(--paper); color: var(--ink); }
.prompt-top { display: flex; justify-content: space-between; align-items: center; padding: .7rem 1rem; border-bottom: 1px solid var(--ink); font: 900 .66rem/1 var(--mono); }
.prompt-top button { border: 0; background: transparent; color: var(--muted); font: inherit; }
.prompt-box code { display: block; padding: clamp(1.5rem, 3vw, 2.5rem); font: 700 clamp(.85rem, 1.5vw, 1.2rem)/1.5 var(--mono); overflow-wrap: anywhere; }
.start-links { display: flex; flex-wrap: wrap; align-items: center; gap: 2rem; margin-top: 2.5rem; font: 800 .76rem/1 var(--mono); }
.button.light { background: var(--white); color: var(--ink); }

footer { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 2rem; align-items: center; min-height: 180px; padding: 2rem clamp(1.25rem, 6vw, 7.5rem); color: #aeb9c7; background: var(--ink); font-size: .78rem; }
.footer-brand { display: flex; align-items: center; gap: 1rem; }
.footer-brand img { width: 65px; }
footer p { margin: 0; text-align: center; }
footer > div:last-child { display: flex; justify-content: flex-end; gap: 1.2rem; }

@media (max-width: 1000px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; }
  .console { max-width: 650px; }
  .section-heading { grid-template-columns: 1fr; gap: 1rem; }
  .pipeline { grid-template-columns: 1fr 1fr; }
  .pipeline-step { min-height: 220px; border-bottom: 1px solid var(--ink); }
  .pipeline-step.hot { transform: none; box-shadow: none; }
  .pain-grid, .carrier-grid { grid-template-columns: 1fr 1fr; }
  .assurance-layout { grid-template-columns: 1fr; }
  .boundary-card { max-width: 650px; }
  .deliverables { grid-template-columns: 1fr; gap: 1rem; }
}

@media (max-width: 680px) {
  .site-header { height: 64px; padding-inline: 1rem; }
  .header-cta { padding: .6rem .7rem; }
  .hero { min-height: auto; grid-template-columns: minmax(0,1fr); padding-top: 4rem; }
  h1 { font-size: clamp(3rem, 15vw, 4.6rem); }
  .hero-facts { flex-direction: column; }
  .hero-facts li { max-width: none; }
  .console { box-shadow: 8px 8px 0 var(--orange); }
  .stamp { display: none; }
  .signal-band span:nth-of-type(even), .signal-band i:nth-of-type(even) { display: none; }
  .pipeline, .pain-grid, .carrier-grid, .limits-grid { grid-template-columns: 1fr; }
  .pipeline-step { border-right: 0; }
  .pain-grid article { padding: 1.5rem; }
  .limits-grid article + article { border-left: 0; border-top: 1px solid var(--ink); }
  .revision-demo { grid-template-columns: 1fr; }
  .impact-arrow { transform: rotate(90deg); justify-self: center; }
  .dual-ledger { flex-direction: column; }
  .dual-ledger > div { width: 100%; }
  .deliverables li { grid-template-columns: 1fr; gap: .4rem; }
  footer { grid-template-columns: 1fr; text-align: left; }
  footer p { text-align: left; }
  footer > div:last-child { justify-content: flex-start; flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

@media print {
  .site-header, .hero-actions, .signal-band { display: none; }
  body { background: white; color: black; }
  .hero, .section { padding: 2rem; }
  .assurance, .revision, .start { color: black; background: white; }
}