:root {
  --paper: #F2EFE7;
  --card: #FAF8F2;
  --ink: #17150F;
  --accent: #2340C8;
  --muted: #7C766A;
  --line: #DCD6C7;
  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;
  --pad: clamp(1.25rem, 4vw, 3rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 350;
  line-height: 1.6;
  overflow-x: hidden;
}

.mono { font-family: var(--mono); }
a { color: inherit; }
img, video { max-width: 100%; display: block; }

/* ── Topbar ───────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem var(--pad);
  border-bottom: 1px solid var(--line);
  font-size: 0.78rem;
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in oklab, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
}
.wordmark { letter-spacing: 0.02em; }
.wordmark b { color: var(--accent); font-weight: 500; }
.status {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid color-mix(in oklab, var(--accent) 35%, transparent);
  border-radius: 999px;
  padding: 0.28rem 0.75rem;
}
.pulse {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: 0.25; } }
.topbar-link {
  margin-left: auto;
  text-decoration: none;
  color: var(--muted);
}
.topbar-link:hover { color: var(--ink); }

/* ── Hero ─────────────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: end;
  padding: clamp(3rem, 8vh, 6rem) var(--pad) clamp(2rem, 5vh, 3.5rem);
}
@media (max-width: 56rem) {
  .hero { grid-template-columns: 1fr; align-items: start; }
}

.eyebrow {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 {
  margin: 1.4rem 0 0;
  font-size: clamp(2.5rem, 5.6vw, 4.4rem);
  font-weight: 640;
  font-stretch: 118%;
  line-height: 1.02;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.accent { color: var(--accent); }

.lede {
  margin: 1.6rem 0 0;
  max-width: 34rem;
  font-size: clamp(0.98rem, 1.5vw, 1.08rem);
  line-height: 1.75;
  color: color-mix(in oklab, var(--ink) 72%, var(--muted));
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2.2rem;
}
.btn {
  font-family: var(--mono);
  font-size: 0.8rem;
  text-decoration: none;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  border: 1px solid var(--ink);
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease, color 180ms ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 4px 0 0 var(--ink); }
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--accent); border-color: var(--accent); box-shadow: 0 4px 0 0 var(--ink); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.hero-media { margin: 0; }
.hero-media video {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 14px;
}
.hero-media figcaption,
.band figcaption {
  margin-top: 0.7rem;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ── Spec strip ───────────────────────────────────── */
.spec {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem clamp(1.5rem, 4vw, 3rem);
  padding: 0.95rem var(--pad);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 0.72rem;
  color: var(--ink);
}
.spec em {
  font-style: normal;
  color: var(--muted);
  margin-right: 0.5rem;
  text-transform: uppercase;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
}

/* ── Sections ─────────────────────────────────────── */
.sec {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: clamp(3.5rem, 9vh, 6.5rem) var(--pad);
  border-bottom: 1px solid var(--line);
}
@media (max-width: 56rem) {
  .sec { grid-template-columns: 1fr; }
}

.sec-head { display: flex; align-items: baseline; gap: 1.1rem; }
.sec-num {
  font-size: 0.72rem;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.2rem 0.5rem;
}
.sec-head h2 {
  margin: 0;
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  font-weight: 600;
  font-stretch: 112%;
  letter-spacing: -0.02em;
}

.manifesto {
  margin: 0;
  font-size: clamp(1.4rem, 2.9vw, 2.1rem);
  font-weight: 480;
  font-stretch: 108%;
  line-height: 1.35;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}
.body-copy {
  margin: 1.8rem 0 0;
  max-width: 38rem;
  color: color-mix(in oklab, var(--ink) 70%, var(--muted));
}

/* ── Files (anatomy) ──────────────────────────────── */
.files {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 44rem) { .files { grid-template-columns: 1fr; } }

.files li {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.4rem 1.4rem 1.2rem;
  transition: border-color 180ms ease, transform 180ms ease;
}
.files li:hover { border-color: var(--accent); transform: translateY(-3px); }
.file-img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
  margin-bottom: 1.1rem;
}

.file-name {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--accent);
}
.files p {
  margin: 0.7rem 0 1rem;
  font-size: 0.88rem;
  line-height: 1.65;
  color: color-mix(in oklab, var(--ink) 72%, var(--muted));
}

.chip {
  display: inline-block;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.22rem 0.65rem;
}
.chip-live {
  color: var(--accent);
  border-color: color-mix(in oklab, var(--accent) 40%, transparent);
}

/* ── Band ─────────────────────────────────────────── */
.band {
  margin: 0;
  padding: clamp(3rem, 7vh, 5rem) var(--pad);
  border-bottom: 1px solid var(--line);
}
.band img {
  width: 100%;
  aspect-ratio: 21 / 7;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 14px;
}
@media (max-width: 44rem) { .band img { aspect-ratio: 16 / 9; } }

/* ── Flow diagram ─────────────────────────────────── */
.flow {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 0;
}
.flow-src {
  font-size: 0.9rem;
  font-weight: 500;
  background: var(--ink);
  color: var(--paper);
  border-radius: 10px;
  padding: 0.9rem 1.2rem;
  white-space: nowrap;
}
.flow-src b { color: #9DB0FF; font-weight: 500; }
.flow-rail {
  width: clamp(1.5rem, 5vw, 4rem);
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 6px, transparent 6px 11px);
}
.flow-out {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
  font-size: 0.9rem;
}
.flow-out li {
  border-left: 2px solid var(--accent);
  padding-left: 1rem;
}
.flow-tag { color: var(--accent); font-size: 0.78rem; margin-right: 0.4rem; }
@media (max-width: 44rem) {
  .flow { grid-template-columns: 1fr; gap: 1rem; }
  .flow-rail { width: 1px; height: 1.5rem; margin-left: 1.2rem;
    background: repeating-linear-gradient(180deg, var(--accent) 0 6px, transparent 6px 11px); }
}

/* ── Principles ───────────────────────────────────── */
.principles {
  list-style: none;
  margin: 0;
  padding: 0;
}
.principles li {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1rem;
  padding: 1.6rem 0;
  border-top: 1px solid var(--line);
}
.principles li:first-child { border-top: 0; padding-top: 0; }
.p-num { font-size: 0.78rem; color: var(--accent); padding-top: 0.35rem; }
.principles h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  font-stretch: 110%;
  letter-spacing: -0.015em;
}
.principles p {
  grid-column: 2;
  margin: 0.5rem 0 0;
  max-width: 34rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: color-mix(in oklab, var(--ink) 70%, var(--muted));
}

/* ── Roadmap ──────────────────────────────────────── */
.roadmap {
  list-style: none;
  margin: 0;
  padding: 0;
}
.roadmap li {
  display: grid;
  grid-template-columns: 4rem 1fr auto;
  gap: 1rem;
  align-items: start;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}
.roadmap li:first-child { border-top: 0; padding-top: 0; }
.r-v { font-size: 0.82rem; color: var(--accent); padding-top: 0.3rem; }
.roadmap h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  font-stretch: 110%;
}
.roadmap p {
  margin: 0.4rem 0 0;
  max-width: 32rem;
  font-size: 0.88rem;
  color: color-mix(in oklab, var(--ink) 70%, var(--muted));
}
@media (max-width: 40rem) {
  .roadmap li { grid-template-columns: 4rem 1fr; }
  .roadmap .chip { grid-column: 2; justify-self: start; }
}

/* ── Outro ────────────────────────────────────────── */
.outro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  padding: clamp(3.5rem, 9vh, 6.5rem) var(--pad);
}
@media (max-width: 56rem) { .outro { grid-template-columns: 1fr; } }
.outro-img {
  border: 1px solid var(--line);
  border-radius: 14px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
}
.outro-copy h2 {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 640;
  font-stretch: 116%;
  letter-spacing: -0.03em;
  line-height: 1.05;
}
.outro-copy p {
  margin: 1.4rem 0 0;
  max-width: 30rem;
  color: color-mix(in oklab, var(--ink) 70%, var(--muted));
}
.outro-copy a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ── Footer ───────────────────────────────────────── */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  justify-content: space-between;
  padding: 1.4rem var(--pad) 1.8rem;
  border-top: 1px solid var(--line);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.site-footer a { color: var(--ink); text-decoration-color: var(--accent); text-underline-offset: 3px; }

/* ── Proof · the file writes itself ───────────────── */
.proof {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1rem;
}
@media (max-width: 44rem) { .proof { grid-template-columns: 1fr; } }

.editor, .canvas {
  margin: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.pane-tab {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 1.1rem;
  font-size: 0.72rem;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  background: rgba(35, 64, 200, 0.04);
}
.replay {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: none;
  border: 1px solid color-mix(in oklab, var(--accent) 35%, transparent);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  cursor: pointer;
}
.replay:hover { background: rgba(35, 64, 200, 0.08); }

.editor pre {
  margin: 0;
  padding: 1.2rem 1.2rem 1.4rem;
  font-size: 0.8rem;
  line-height: 1.8;
  min-height: 17rem;
  white-space: pre-wrap;
}
.editor code { white-space: pre-wrap; }
.type-caret {
  display: inline-block;
  width: 0.55em;
  height: 1.05em;
  margin-left: 1px;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: caret-blink 1.05s steps(1) infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }

.canvas-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  padding: 1.2rem;
}
.r-item {
  border: 1px dashed var(--line);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 5.2rem;
  position: relative;
  padding: 0.8rem;
}
.r-item .r-label {
  position: absolute;
  bottom: 0.5rem;
  right: 0.8rem;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.r-item > .shape, .r-item > .chip, .r-item .r-label {
  opacity: 0;
  transform: translateY(8px) scale(0.9);
  transition: opacity 500ms cubic-bezier(0.22, 1, 0.36, 1), transform 500ms cubic-bezier(0.22, 1, 0.36, 1);
}
.r-item.on > .shape, .r-item.on > .chip, .r-item.on .r-label {
  opacity: 1;
  transform: none;
}
.r-item.on > .shape:nth-child(2) { transition-delay: 90ms; }
.r-item.on > .shape:nth-child(3) { transition-delay: 180ms; }

.shape { display: inline-block; }
.sh-circle { width: 2rem; height: 2rem; border-radius: 50%; }
.sh-blue { background: var(--accent); }
.sh-paper { background: var(--paper); border: 1px solid var(--line); }
.sh-ink { background: var(--ink); }
.sh-bar { border-radius: 3px; background: var(--ink); }
.sh-bar-lg { width: 3.4rem; height: 0.9rem; }
.sh-bar-sm { width: 2.2rem; height: 0.5rem; background: var(--muted); }
.sh-pill { border-radius: 999px; background: var(--accent); height: 0.7rem; }
.sh-p1 { width: 0.7rem; }
.sh-p2 { width: 1.4rem; }
.sh-p3 { width: 2.8rem; }

/* ── Build log ────────────────────────────────────── */
.log-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 44rem;
}
.log-list li {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1.2rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}
.log-list li:first-child { border-top: 0; }
.log-date {
  font-size: 0.72rem;
  color: var(--muted);
  padding-top: 0.3rem;
}
.log-list h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  font-stretch: 110%;
}
.log-list h3 .mono { color: var(--accent); font-weight: 500; font-size: 0.85rem; margin-right: 0.5rem; }
.log-list p {
  margin: 0.4rem 0 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: color-mix(in oklab, var(--ink) 70%, var(--muted));
}
.page-head {
  padding: clamp(3rem, 8vh, 5rem) var(--pad) 0;
}
.page-head h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
}
.page-head .lede { margin-top: 1.2rem; max-width: 34rem; color: color-mix(in oklab, var(--ink) 72%, var(--muted)); }
.page-body { padding: clamp(2.5rem, 6vh, 4rem) var(--pad) clamp(4rem, 10vh, 6rem); }

/* ── Motion ───────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(18px); }
.reveal.in {
  opacity: 1;
  transform: none;
  transition: opacity 650ms cubic-bezier(0.22, 1, 0.36, 1), transform 650ms cubic-bezier(0.22, 1, 0.36, 1);
}

@media (prefers-reduced-motion: no-preference) {
  .rise { animation: rise 650ms cubic-bezier(0.22, 1, 0.36, 1) both; }
  .rise-1 { animation-delay: 90ms; }
  .rise-2 { animation-delay: 190ms; }
  .rise-3 { animation-delay: 300ms; }
  @keyframes rise {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: none; }
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  .pulse, .type-caret { animation: none; }
  .r-item > .shape, .r-item > .chip, .r-item .r-label { transition: none; }
}