:root {
  --ink: #17211f;
  --ink-soft: #273330;
  --paper: #f2eee5;
  --paper-bright: #fbfaf5;
  --paper-deep: #e3e6de;
  --muted: #5f6e68;
  --line: #bbc5bd;
  --teal: #3b6d65;
  --teal-pale: #c5ddd5;
  --amber: #c07625;
  --focus: #2a69aa;
  --shell: min(100% - 2rem, 82rem);
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: Iowan Old Style, Baskerville, Georgia, "Times New Roman", serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 1rem; line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
.skip-link { position: fixed; z-index: 100; top: .75rem; left: .75rem; padding: .65rem .9rem; color: #fff; background: var(--ink); transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.site-header, .section-shell, .site-footer { width: var(--shell); margin-inline: auto; }
.site-header { display: flex; min-height: 5.4rem; align-items: center; justify-content: space-between; gap: 2rem; border-bottom: 1px solid var(--ink); }
.brand { display: inline-flex; align-items: center; gap: .8rem; text-decoration: none; }
.brand-mark { display: grid; width: 2.6rem; height: 2.6rem; place-items: center; color: var(--paper); background: var(--ink); border-radius: 8px; font: 700 .7rem var(--mono); letter-spacing: .06em; }
.brand > span:last-child { display: grid; line-height: 1.15; }
.brand strong { font-size: .88rem; }
.brand small { margin-top: .25rem; color: var(--muted); font: .57rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.site-header nav { display: flex; align-items: center; gap: clamp(1rem, 3vw, 2.7rem); }
.site-header nav a { font-size: .72rem; font-weight: 750; letter-spacing: .1em; text-decoration: none; text-transform: uppercase; }
.site-header nav a:hover { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: .3rem; }
.site-header .nav-action { display: inline-flex; min-height: 44px; align-items: center; padding: .55rem .7rem; border: 1px solid var(--ink); border-radius: 6px; }
.hero { display: grid; min-height: calc(100vh - 5.4rem); grid-template-columns: minmax(0, 1fr) minmax(24rem, .88fr); align-items: center; gap: clamp(2rem, 7vw, 7rem); padding-block: clamp(4rem, 9vw, 8rem); }
.eyebrow, .section-index { margin: 0; color: var(--muted); font: 700 .66rem var(--mono); letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3, p { text-wrap: pretty; }
h1, h2, h3 { margin: 0; font-weight: 500; letter-spacing: -.055em; line-height: .96; }
h1 { max-width: 9ch; margin-top: 1.4rem; font-size: clamp(4rem, 8vw, 7.7rem); }
h1 em { color: var(--amber); font-family: var(--serif); font-weight: 400; }
h2 { font-size: clamp(2.8rem, 5vw, 5rem); }
h3 { font-size: 1.45rem; }
.hero-intro { max-width: 40rem; margin: 2rem 0 0; color: var(--muted); font-size: clamp(1.05rem, 1.8vw, 1.3rem); line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.2rem 1.6rem; margin-top: 2rem; }
.primary-action, .secondary-action { display: inline-flex; min-height: 48px; align-items: center; gap: .8rem; padding: .75rem 1rem; border-radius: 7px; font-size: .7rem; font-weight: 800; letter-spacing: .08em; text-decoration: none; text-transform: uppercase; }
.primary-action { color: #fff; background: var(--ink); border: 1px solid var(--ink); }
.primary-action:hover { color: var(--ink); background: var(--teal-pale); }
.secondary-action { border: 1px solid var(--ink); }
.secondary-action:hover { background: var(--paper-bright); }
.hero-ledger { display: grid; max-width: 40rem; margin: 3rem 0 0; border-top: 1px solid var(--line); grid-template-columns: repeat(3, 1fr); }
.hero-ledger div { padding: .9rem .7rem .9rem 0; }
.hero-ledger div + div { padding-left: .7rem; border-left: 1px solid var(--line); }
.hero-ledger dt { color: var(--teal); font: 700 .6rem var(--mono); }
.hero-ledger dd { margin: .3rem 0 0; font-size: .72rem; font-weight: 700; }
.hero-visual { position: relative; min-height: 35rem; margin: 0; overflow: hidden; background: var(--ink); border-radius: 18px; box-shadow: 18px 18px 0 var(--teal-pale); }
.sealed-card { position: absolute; inset: 12% 12%; display: grid; min-height: 64%; align-content: start; padding: 1.35rem; color: var(--ink); background: var(--paper-bright); border: 1px solid #fff; box-shadow: 12px 12px 0 var(--amber); transform: rotate(-4deg); }
.sealed-card__top, .sealed-card__foot { display: flex; justify-content: space-between; gap: .5rem; color: var(--muted); font: .56rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.sealed-card__lock { position: relative; width: 7.5rem; height: 7.5rem; margin: 4rem auto 2rem; }
.lock-shackle { position: absolute; top: 0; left: 1.75rem; width: 4rem; height: 4rem; border: .7rem solid var(--teal); border-bottom: 0; border-radius: 4rem 4rem 0 0; }
.lock-body { position: absolute; right: 0; bottom: 0; left: 0; height: 4.6rem; background: var(--teal); border-radius: .6rem; }
.lock-body::after { position: absolute; top: 1.25rem; left: calc(50% - .45rem); width: .9rem; height: 1.8rem; content: ""; background: var(--paper-bright); border-radius: .5rem; }
.sealed-card__line { width: 75%; height: .6rem; margin-top: 1rem; background: var(--paper-deep); }
.sealed-card__line--short { width: 48%; }
.sealed-card__stamp { position: absolute; right: 1.2rem; bottom: 3.8rem; padding: .6rem; color: var(--amber); border: 2px solid var(--amber); font: 700 .6rem var(--mono); line-height: 1.25; text-align: center; transform: rotate(8deg); }
.sealed-card__foot { position: absolute; right: 1.35rem; bottom: 1.35rem; left: 1.35rem; padding-top: .75rem; border-top: 1px solid var(--line); }
.hero-visual figcaption { position: absolute; right: 1rem; bottom: 1rem; left: 1rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .75rem .9rem; color: #fff; background: rgb(23 33 31 / .88); border: 1px solid rgb(255 255 255 / .22); border-radius: 7px; }
.hero-visual figcaption span { color: var(--teal-pale); font: .6rem var(--mono); text-transform: uppercase; }
.hero-visual figcaption strong { font-size: .72rem; }
.thesis { display: grid; grid-template-columns: minmax(10rem, .35fr) minmax(0, 1fr); gap: 2rem; padding-block: clamp(5rem, 10vw, 9rem); border-top: 1px solid var(--ink); }
.thesis > div { display: grid; max-width: 66rem; gap: 2rem; }
.thesis h2 { max-width: 13ch; }
.thesis p:last-child { max-width: 49rem; margin: 0; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.35rem); line-height: 1.7; }
.flow { padding-block: clamp(5rem, 9vw, 8rem); border-top: 1px solid var(--ink); }
.section-heading { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(18rem, .85fr); align-items: end; gap: 3rem; }
.section-heading h2 { margin-top: .8rem; }
.section-heading > p { max-width: 35rem; margin: 0; color: var(--muted); font-size: 1rem; line-height: 1.7; }
.flow-map { display: grid; align-items: stretch; margin-top: 4rem; grid-template-columns: minmax(0, 1fr) 36px minmax(0, 1fr) 36px minmax(0, 1fr) 36px minmax(0, 1fr); }
.flow-node { display: grid; min-height: 18rem; align-content: space-between; padding: 1.2rem; background: var(--paper-bright); border: 1px solid var(--ink); border-radius: 10px; }
.flow-node span { color: var(--teal); font: .6rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.flow-node p { margin: 1rem 0 0; color: var(--muted); font-size: .88rem; line-height: 1.6; }
.flow-node--dark { color: var(--paper); background: var(--ink); }
.flow-node--dark span { color: var(--teal-pale); }
.flow-node--dark p { color: #bdc9c3; }
.flow-node--accent { background: var(--amber); }
.flow-node--accent span { color: var(--ink); }
.flow-arrow { display: grid; place-items: center; color: var(--amber); font-size: 1.3rem; }
.principles { padding-block: clamp(5rem, 9vw, 8rem); color: var(--paper); background: var(--ink); }
.section-heading--light .eyebrow { color: var(--teal-pale); }
.section-heading--light > p { color: #bdc9c3; }
.principle-grid { display: grid; margin-top: 4rem; border-top: 1px solid #4a5853; border-left: 1px solid #4a5853; grid-template-columns: repeat(4, 1fr); }
.principle { min-height: 21rem; padding: 1.3rem; border-right: 1px solid #4a5853; border-bottom: 1px solid #4a5853; }
.principle > span { display: grid; width: 2.2rem; height: 2.2rem; place-items: center; color: var(--ink); background: var(--teal-pale); border-radius: 50%; font: .63rem var(--mono); }
.principle h3 { max-width: 12ch; margin-top: 4.8rem; }
.principle p { margin: 1rem 0 0; color: #bdc9c3; font-size: .88rem; line-height: 1.65; }
.remote { display: grid; grid-template-columns: minmax(0, 1fr) minmax(20rem, .8fr); align-items: end; gap: clamp(3rem, 8vw, 8rem); padding-block: clamp(5rem, 10vw, 9rem); border-top: 1px solid var(--ink); }
.remote-copy h2 { max-width: 11ch; margin-top: 1rem; }
.remote-copy p { max-width: 43rem; margin: 1.4rem 0 0; color: var(--muted); font-size: 1.05rem; line-height: 1.7; }
.remote-panel { padding: 1rem 1.25rem; background: var(--paper-bright); border: 1px solid var(--ink); box-shadow: 10px 10px 0 var(--teal-pale); }
.remote-panel div { display: grid; align-items: center; column-gap: .7rem; padding: 1rem 0; grid-template-columns: 1rem 1fr; }
.remote-panel div + div { border-top: 1px solid var(--line); }
.status-dot { width: .65rem; height: .65rem; background: var(--line); border-radius: 50%; }
.status-dot--ready { background: var(--teal); }
.remote-panel strong { font-size: .82rem; }
.remote-panel small { grid-column: 2; color: var(--muted); font: .6rem var(--mono); text-transform: uppercase; }
.privacy { display: grid; grid-template-columns: minmax(0, 1fr) minmax(22rem, .8fr); gap: clamp(3rem, 8vw, 8rem); padding-block: clamp(5rem, 10vw, 9rem); border-top: 1px solid var(--ink); }
.privacy-copy h2 { max-width: 11ch; margin-top: 1rem; }
.privacy-copy > p:last-child { max-width: 43rem; margin: 1.5rem 0 0; color: var(--muted); font-size: 1.05rem; line-height: 1.7; }
.privacy-ledger { margin: 0; border-top: 1px solid var(--ink); }
.privacy-ledger div { padding: 1rem 0; border-bottom: 1px solid var(--line); }
.privacy-ledger dt { color: var(--muted); font: .62rem var(--mono); text-transform: uppercase; }
.privacy-ledger dd { margin: .4rem 0 0; font-weight: 700; }
.closing { padding-block: clamp(5rem, 10vw, 8rem); color: var(--ink); background: var(--amber); }
.closing .eyebrow { color: var(--ink); }
.closing h2 { max-width: 12ch; margin-top: 1rem; }
.closing p:last-child { max-width: 38rem; margin: 1.5rem 0 0; color: var(--ink); font-size: 1.05rem; line-height: 1.7; }
.site-footer { display: grid; min-height: 15rem; align-items: center; grid-template-columns: 1fr 1fr 1fr; gap: 2rem; }
.site-footer p { margin: 0; color: var(--muted); font-size: .8rem; }
.site-footer .colophon { text-align: right; }
.site-footer a { min-height: 44px; display: inline-flex; align-items: center; }
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: no-preference) { .sealed-card { animation: courier-float 7s ease-in-out infinite; } }
@keyframes courier-float { 0%, 100% { transform: rotate(-4deg) translateY(0); } 50% { transform: rotate(-4deg) translateY(-10px); } }
@media (max-width: 1050px) { .hero { grid-template-columns: 1fr; } .hero-copy { max-width: 58rem; } .hero-visual { min-height: 32rem; } .section-heading { grid-template-columns: 1fr; gap: 1.4rem; } .flow-map { grid-template-columns: 1fr; gap: .75rem; } .flow-arrow { min-height: 2rem; transform: rotate(90deg); } .principle-grid { grid-template-columns: repeat(2, 1fr); } .remote, .privacy { grid-template-columns: 1fr; } }
@media (max-width: 720px) { :root { --shell: min(100% - 1.25rem, 82rem); } .site-header { min-height: 4.7rem; } .site-header nav a:not(.nav-action) { display: none; } .site-header .nav-action { font-size: .62rem; } .hero { padding-block: 3.5rem 5rem; } h1 { font-size: clamp(3.4rem, 17vw, 5.2rem); } .hero-ledger { grid-template-columns: 1fr; } .hero-ledger div, .hero-ledger div + div { padding: .75rem 0; border-left: 0; border-bottom: 1px solid var(--line); } .hero-visual { min-height: 25rem; border-radius: 12px; box-shadow: 8px 8px 0 var(--teal-pale); } .sealed-card { inset: 10% 8%; } .sealed-card__lock { margin-top: 2.2rem; transform: scale(.8); } .hero-visual figcaption { align-items: flex-start; flex-direction: column; } .thesis { grid-template-columns: 1fr; } .principle-grid { grid-template-columns: 1fr; } .principle { min-height: 15rem; } .principle h3 { margin-top: 3rem; } .remote-panel { box-shadow: 7px 7px 0 var(--teal-pale); } .site-footer { display: flex; min-height: 20rem; align-items: flex-start; flex-direction: column; justify-content: center; } .site-footer .colophon { text-align: left; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } .sealed-card { animation: none; } }