:root {
  --bg: #eee6db;
  --bg-deep: #d9cdbf;
  --paper: rgba(252, 248, 242, 0.9);
  --panel: rgba(255, 252, 248, 0.76);
  --line: rgba(34, 29, 24, 0.12);
  --line-strong: rgba(34, 29, 24, 0.24);
  --ink: #191713;
  --muted: #5f584e;
  --accent: #a45c35;
  --accent-strong: #6f3a24;
  --accent-soft: rgba(164, 92, 53, 0.1);
  --accent-2: #173d36;
  --accent-2-soft: rgba(23, 61, 54, 0.08);
  --success: #406c54;
  --warn: #9f6427;
  --danger: #9e4234;
  --shadow: 0 26px 64px rgba(42, 26, 13, 0.1);
  --shadow-soft: 0 18px 36px rgba(34, 29, 24, 0.08);
  --radius: 22px;
  --radius-sm: 16px;
  --max: 1220px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 0%, rgba(164, 92, 53, 0.16), transparent 30%),
    radial-gradient(circle at 88% 8%, rgba(23, 61, 54, 0.12), transparent 28%),
    linear-gradient(180deg, #faf6ef 0%, #f2ece2 45%, var(--bg) 100%);
  font-family: "Space Grotesk", sans-serif;
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0.22)),
    linear-gradient(rgba(25, 23, 20, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 23, 20, 0.025) 1px, transparent 1px);
  background-size: auto, 38px 38px, 38px 38px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.54), transparent 92%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at center, transparent 56%, rgba(30, 22, 16, 0.08) 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

main {
  position: relative;
  padding-bottom: 2rem;
}

code,
pre {
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

code:not(pre code) {
  padding: 0.12rem 0.34rem;
  border-radius: 0.45rem;
  border: 1px solid rgba(23, 61, 54, 0.08);
  background: rgba(23, 61, 54, 0.05);
  font-size: 0.92em;
}

.shell {
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(247, 243, 236, 0.72);
  border-bottom: 1px solid rgba(34, 29, 24, 0.08);
  box-shadow: 0 10px 24px rgba(34, 29, 24, 0.05);
}

.nav-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.78rem;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

.brand-mark {
  display: inline-flex;
  width: 2.2rem;
  height: 2.2rem;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(34, 29, 24, 0.14);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(239, 232, 223, 0.9));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.78), 0 10px 24px rgba(34, 29, 24, 0.08);
  font-family: "Cormorant Garamond", "IBM Plex Serif", serif;
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.brand-text {
  transform: translateY(1px);
}

.nav {
  display: flex;
  gap: 1.05rem;
  flex-wrap: wrap;
}

.nav a {
  position: relative;
  padding: 0.35rem 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.1rem;
  height: 1px;
  background: linear-gradient(90deg, rgba(23, 61, 54, 0.12), rgba(23, 61, 54, 0.8));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 160ms ease;
}

.nav a:hover,
.nav a.active {
  color: var(--ink);
}

.nav a:hover::after,
.nav a.active::after {
  transform: scaleX(1);
}

.hero {
  position: relative;
  padding: 4.8rem 0 2.8rem;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 29, 24, 0.14), transparent);
}

.hero-grid,
.grid-two,
.grid-three,
.compare-grid,
.process-grid,
.lab-layout,
.metric-row,
.lab-subgrid {
  display: grid;
  gap: 1rem;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  align-items: start;
}

.hero-copy,
.hero-panel,
.panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 2px);
  background: linear-gradient(180deg, rgba(255, 252, 248, 0.82), rgba(247, 240, 231, 0.7));
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
}

.hero-copy::before,
.hero-panel::before,
.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.48);
  pointer-events: none;
}

.hero-copy {
  padding: clamp(1.7rem, 4vw, 3rem);
  background: linear-gradient(135deg, rgba(255, 253, 250, 0.92), rgba(247, 239, 229, 0.78));
  box-shadow: var(--shadow);
}

.hero-copy::after {
  content: "";
  position: absolute;
  right: -6rem;
  top: -7rem;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(164, 92, 53, 0.14), transparent 66%);
  pointer-events: none;
}

.hero-panel {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  background: linear-gradient(180deg, rgba(249, 243, 236, 0.84), rgba(241, 233, 224, 0.78));
}

body[data-page="lab"] .hero-copy::after {
  background: radial-gradient(circle, rgba(23, 61, 54, 0.16), transparent 66%);
}

.eyebrow,
.kicker,
.process-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.36rem 0.72rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow,
.kicker {
  color: var(--accent-2);
  background: var(--accent-2-soft);
  border: 1px solid rgba(23, 61, 54, 0.14);
}

.process-step {
  width: 2.1rem;
  height: 2.1rem;
  padding: 0;
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 10px 20px rgba(111, 58, 36, 0.22);
}

.display,
h1,
h2,
h3 {
  margin: 0;
  font-family: "Cormorant Garamond", "IBM Plex Serif", serif;
  font-weight: 600;
  line-height: 0.96;
  letter-spacing: -0.035em;
}

.display {
  font-size: clamp(3.9rem, 8vw, 7rem);
  max-width: 9.3ch;
}

h2 {
  font-size: clamp(2.1rem, 4.8vw, 3.45rem);
}

h3 {
  font-size: 1.48rem;
}

.lede,
.section-header p,
.panel p,
.panel li,
.metric-note,
.note {
  color: var(--muted);
}

.lede {
  margin: 1rem 0 0;
  max-width: 58ch;
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
}

.cta-row {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1.4rem;
}

.button,
.control {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.86rem 1.18rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
  box-shadow: 0 10px 24px rgba(34, 29, 24, 0.06);
}

.button:hover,
.control:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(34, 29, 24, 0.08);
}

.button,
.control.accent {
  color: white;
  background: linear-gradient(135deg, var(--accent-2), #0f2924);
}

.button.secondary,
.control {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.7);
  border-color: var(--line);
}

.section {
  padding: 1.8rem 0 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.35rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(34, 29, 24, 0.08);
}

.section-header p {
  margin: 0;
  max-width: 56ch;
}

.grid-two,
.lab-subgrid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.compare-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.process-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.panel {
  padding: 1.5rem;
  background: linear-gradient(180deg, rgba(255, 252, 248, 0.84), rgba(248, 241, 232, 0.7));
}

.panel.tight {
  padding: 1rem 1.1rem;
}

.panel h3 + p,
.panel h3 + .formula,
.panel h3 + .code-block,
.panel h3 + ul {
  margin-top: 0.6rem;
}

.panel ul {
  margin: 0.75rem 0 0;
  padding-left: 1.05rem;
}

.mini-list li + li {
  margin-top: 0.45rem;
}

.formula {
  font-family: "IBM Plex Serif", serif;
  font-size: clamp(1.22rem, 2vw, 1.7rem);
  letter-spacing: -0.03em;
}

.formula-block {
  padding: 1rem 1.1rem;
  border-radius: 18px;
  border: 1px solid rgba(23, 61, 54, 0.08);
  background: linear-gradient(180deg, rgba(23, 61, 54, 0.04), rgba(255, 255, 255, 0.46));
}

.formula .line {
  display: block;
}

.formula .small,
.small-formula,
.muted,
.note {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.94rem;
  letter-spacing: 0;
}

.formula-block .line + .line {
  margin-top: 0.55rem;
}

.small-formula {
  margin-top: 0.75rem;
  font-size: 1rem;
}

.code-block {
  margin: 0;
  padding: 1.1rem;
  overflow-x: auto;
  border-radius: 18px;
  border: 1px solid rgba(20, 20, 20, 0.08);
  background: linear-gradient(180deg, #191714, #12110e);
  color: #f5efe5;
  font-size: 0.92rem;
  line-height: 1.55;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.callout {
  margin-top: 1rem;
  padding: 1rem 1.05rem;
  border-radius: 18px;
  border: 1px solid rgba(23, 61, 54, 0.08);
  background: linear-gradient(180deg, rgba(23, 61, 54, 0.06), rgba(255, 255, 255, 0.46));
  color: var(--muted);
}

.banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: linear-gradient(135deg, rgba(23, 61, 54, 0.08), rgba(255, 255, 255, 0.52));
}

.source-strip {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.source-strip a {
  padding: 0.72rem 0.98rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.62);
  color: var(--muted);
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.source-strip a:hover {
  transform: translateY(-1px);
  border-color: rgba(23, 61, 54, 0.22);
  background: rgba(255, 255, 255, 0.78);
}

.process-card {
  display: grid;
  gap: 0.8rem;
  min-height: 100%;
}

.figure-panel {
  display: grid;
  gap: 0.9rem;
}

.figure-image {
  display: block;
  width: 100%;
  border-radius: 20px;
  border: 1px solid rgba(20, 20, 20, 0.08);
  background: rgba(255, 255, 255, 0.75);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.54);
}

.lab-layout {
  grid-template-columns: minmax(320px, 0.88fr) minmax(0, 1.12fr);
  align-items: start;
}

.lab-main {
  display: grid;
  gap: 1rem;
}

.tape-panel {
  position: sticky;
  top: 5.8rem;
}

.tape-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.controls {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.event-tape {
  display: grid;
  gap: 0.7rem;
  max-height: 70vh;
  overflow: auto;
  padding-right: 0.25rem;
}

.event-tape::-webkit-scrollbar {
  width: 10px;
}

.event-tape::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(23, 61, 54, 0.18);
}

.event-tape::-webkit-scrollbar-track {
  background: rgba(23, 61, 54, 0.05);
}

.event-item {
  position: relative;
  padding: 0.95rem 1rem 0.95rem 1.15rem;
  border-radius: 18px;
  border: 1px solid rgba(20, 20, 20, 0.07);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.58), rgba(247, 240, 231, 0.52));
}

.event-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 18px 0 0 18px;
  background: transparent;
}

.event-item.active {
  border-color: rgba(164, 92, 53, 0.28);
  background: linear-gradient(180deg, rgba(164, 92, 53, 0.12), rgba(255, 255, 255, 0.64));
}

.event-item.active::before {
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
}

.event-item.done {
  border-color: rgba(23, 61, 54, 0.22);
}

.event-item.done::before {
  background: linear-gradient(180deg, rgba(23, 61, 54, 0.9), rgba(23, 61, 54, 0.3));
}

.event-top {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: start;
}

.event-name {
  font-weight: 700;
}

.event-seq {
  font-size: 0.84rem;
  color: var(--muted);
}

.event-desc {
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: 0.94rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.7rem;
}

.chip {
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(20, 20, 20, 0.05);
  color: var(--muted);
}

.chip.warn {
  color: var(--warn);
  background: rgba(184, 101, 26, 0.12);
}

.chip.danger {
  color: var(--danger);
  background: rgba(188, 63, 43, 0.12);
}

.metric-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric-card {
  position: relative;
  display: grid;
  gap: 0.55rem;
  background: linear-gradient(180deg, rgba(255, 252, 248, 0.9), rgba(246, 238, 228, 0.74));
}

.metric-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(164, 92, 53, 0.58), rgba(23, 61, 54, 0.58));
}

.metric-value {
  font-family: "Cormorant Garamond", "IBM Plex Serif", serif;
  font-size: 3rem;
  font-weight: 600;
  letter-spacing: -0.04em;
  color: var(--accent-2);
}

.metric-value.small {
  font-size: 2.1rem;
}

.meter {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(23, 61, 54, 0.08);
}

.meter span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
}

.breakdown-grid {
  display: grid;
  gap: 0.7rem;
}

.breakdown-item {
  display: grid;
  gap: 0.3rem;
}

.breakdown-item header {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  font-size: 0.93rem;
}

.diagnostics {
  display: grid;
  gap: 0.65rem;
}

.diagnostic {
  padding: 0.8rem 0.9rem;
  border-radius: 16px;
  border: 1px solid rgba(23, 61, 54, 0.08);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.62), rgba(247, 240, 231, 0.5));
  box-shadow: inset 4px 0 0 var(--accent);
}

.diagnostic.ok {
  box-shadow: inset 4px 0 0 var(--success);
}

.book-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.92rem;
  background: rgba(255, 255, 255, 0.44);
  border-radius: 18px;
  overflow: hidden;
}

.book-table th,
.book-table td {
  padding: 0.62rem 0.55rem;
  border-bottom: 1px solid rgba(20, 20, 20, 0.08);
  text-align: right;
}

.book-table th {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  background: rgba(23, 61, 54, 0.05);
}

.book-table tbody tr:nth-child(odd) td {
  background: rgba(255, 255, 255, 0.25);
}

.book-table th:first-child,
.book-table td:first-child,
.book-table th:nth-child(2),
.book-table td:nth-child(2),
.book-table.compact th:first-child,
.book-table.compact td:first-child,
.book-table.compact th:nth-child(2),
.book-table.compact td:nth-child(2) {
  text-align: left;
}

.book-table tbody tr:last-child td {
  border-bottom: none;
}

.footer {
  padding: 2.2rem 0 3rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  padding-top: 1rem;
  border-top: 1px solid rgba(34, 29, 24, 0.08);
}

.footer-links a {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

@media (max-width: 1100px) {
  .process-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .lab-layout,
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .tape-panel {
    position: static;
  }
}

@media (max-width: 860px) {
  .grid-two,
  .grid-three,
  .compare-grid,
  .process-grid,
  .metric-row,
  .lab-subgrid {
    grid-template-columns: 1fr;
  }

  .banner {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(calc(100% - 1rem), var(--max));
  }

  .nav-row {
    align-items: start;
    flex-direction: column;
  }

  .nav {
    gap: 0.8rem;
  }

  .hero {
    padding-top: 1.7rem;
  }

  .hero-copy,
  .hero-panel,
  .panel {
    border-radius: 20px;
  }
}