:root {
  --ink: #1b1814;
  --muted: #5e574c;
  --line: #e3d9c8;
  --paper: #f4efe6;
  --card: #fffdf8;
  --dark: #171512;
  --dark-2: #241f1a;
  --teal: #0f6e62;
  --teal-deep: #0b534b;
  --mint: #e7f3ef;
  --up: #0c7a43;
  --shadow: 0 18px 40px rgba(28, 22, 14, 0.06);
  --serif: "Instrument Serif", "Iowan Old Style", Palatino, serif;
  --sans: Outfit, "Avenir Next", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background:
    radial-gradient(ellipse at top, rgba(15, 110, 98, 0.08), transparent 42%),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 1.05rem;
  line-height: 1.55;
}

a {
  color: inherit;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--dark);
  color: white;
  padding: 0.5rem 0.8rem;
  z-index: 5;
}

.skip:focus {
  top: 1rem;
}

.top {
  position: sticky;
  top: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.85rem 6vw;
  background: rgba(244, 239, 230, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.monogram {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--teal);
  color: white;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.top nav {
  display: flex;
  gap: 1.1rem;
  margin-left: auto;
}

.top nav a,
.ig {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
}

.top nav a:hover,
.ig:hover,
.hero-meta a:hover,
footer a:hover {
  color: var(--teal-deep);
}

.ig {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
}

main {
  width: min(1120px, calc(100% - 10vw));
  margin: 0 auto;
  padding-bottom: 4rem;
}

.hero {
  margin-top: 2.5rem;
  padding: 2.6rem 2.4rem 2.2rem;
  border-radius: 28px;
  background:
    linear-gradient(160deg, rgba(15, 110, 98, 0.18), transparent 36%),
    var(--dark);
  color: #f6f1e8;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  color: #b7ddd6;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.03em;
}

h1 {
  margin: 0;
  max-width: 11ch;
  font-size: clamp(3.1rem, 7vw, 5.6rem);
  line-height: 0.92;
}

.lede {
  max-width: 38rem;
  margin: 1.2rem 0 0;
  font-size: 1.2rem;
  color: rgba(246, 241, 232, 0.82);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-meta dt {
  color: rgba(246, 241, 232, 0.55);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-meta dd {
  margin: 0.2rem 0 0;
  font-size: 1.05rem;
}

.hero-meta a {
  color: white;
}

section {
  margin-top: 4.5rem;
  scroll-margin-top: 5rem;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 1.5rem;
  align-items: end;
  margin-bottom: 1.5rem;
}

h2 {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  line-height: 0.95;
}

.section-head p,
.study > div p {
  margin: 0;
  color: var(--muted);
}

.study > div p + p {
  margin-top: 0.9rem;
}

.metrics {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.metrics li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.1rem 1.15rem 1rem;
  box-shadow: var(--shadow);
}

.label {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.value {
  margin: 0.35rem 0 0.15rem;
  font-family: var(--serif);
  font-size: clamp(2rem, 3vw, 2.7rem);
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.delta {
  margin: 0;
  color: var(--up);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.delta::before {
  content: "↑ ";
}

.charts {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 0.9rem;
  margin-top: 0.9rem;
}

figure {
  margin: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem 1rem 0.85rem;
  box-shadow: var(--shadow);
}

figcaption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.92rem;
  margin-bottom: 0.4rem;
}

figcaption span:last-child {
  color: var(--teal-deep);
  font-weight: 600;
}

svg {
  width: 100%;
  height: auto;
  display: block;
  color: var(--teal);
}

.grid line {
  stroke: var(--line);
  stroke-width: 1;
}

.grid text,
.axis text {
  fill: var(--muted);
  font-size: 13px;
  font-family: var(--sans);
}

polyline {
  stroke: var(--teal);
  stroke-width: 3;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.area {
  opacity: 0.16;
}

.peak line {
  stroke: rgba(15, 110, 98, 0.35);
  stroke-dasharray: 3 4;
}

.peak circle {
  fill: var(--card);
  stroke: var(--teal-deep);
  stroke-width: 3;
}

.peak text,
.bar-label {
  fill: var(--teal-deep);
  font-size: 13px;
  font-weight: 600;
  text-anchor: middle;
  font-family: var(--sans);
}

.bars rect {
  fill: #b7ddd4;
}

.bars rect.hi {
  fill: var(--teal);
}

.note {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.mix {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
  padding: 0;
  margin: 0.9rem 0 0;
}

.mix li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  background: var(--mint);
  color: var(--teal-deep);
}

.mix strong {
  font-family: var(--serif);
  font-size: 1.7rem;
  font-weight: 400;
  letter-spacing: -0.03em;
}

.evidence {
  margin-top: 0.9rem;
  padding: 1.15rem 1.25rem 1.25rem;
  border-radius: 18px;
  background: var(--dark);
  color: #f6f1e8;
}

.evidence .sheet-label {
  padding: 0;
  color: #9fd4cb;
}

.evidence h3 {
  margin: 0.35rem 0 0.4rem;
  font-size: 1.8rem;
}

.evidence p {
  margin: 0;
  max-width: 40rem;
  color: rgba(246, 241, 232, 0.75);
}

.evidence a {
  display: inline-block;
  margin-top: 0.9rem;
  color: #f6f1e8;
  font-weight: 600;
  text-underline-offset: 0.18em;
}

.study {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  border-radius: 28px;
  background: var(--dark);
  color: #f6f1e8;
}

.study .eyebrow {
  color: #9fd4cb;
}

.study h2 {
  margin-bottom: 0.8rem;
}

.study > div p {
  color: rgba(246, 241, 232, 0.78);
}

.study ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.study li {
  background: var(--dark-2);
  border-radius: 16px;
  padding: 0.95rem 1rem;
}

.study h3 {
  margin: 0 0 0.25rem;
  font-size: 1.45rem;
}

.study li p {
  margin: 0;
  color: rgba(246, 241, 232, 0.75);
}

.study a {
  display: inline-block;
  margin-top: 1rem;
  color: #f6f1e8;
  font-weight: 600;
  text-underline-offset: 0.18em;
}

.sheet {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.sheet-label {
  margin: 0;
  padding: 0.75rem 1rem 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sheet-scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

th,
td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
  font-weight: 400;
}

th {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.status {
  display: inline-block;
  background: var(--mint);
  color: var(--teal-deep);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  font-weight: 600;
  font-size: 0.88rem;
}

.rules {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  padding: 0;
  margin: 0.9rem 0 0;
  list-style: none;
  counter-reset: step;
}

.rules li {
  counter-increment: step;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.9rem 1rem 0.9rem 3rem;
  position: relative;
}

.rules li::before {
  content: counter(step);
  position: absolute;
  left: 0.9rem;
  top: 0.85rem;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: var(--dark);
  color: white;
  font-size: 0.78rem;
}

.closing {
  margin: 1rem 0 0;
  max-width: 40rem;
  font-size: 1.15rem;
}

footer {
  width: min(1120px, calc(100% - 10vw));
  margin: 0 auto 2.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

footer p {
  margin: 0;
}

a:focus-visible,
.skip:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

@media (max-width: 860px) {
  .top {
    flex-wrap: wrap;
    padding: 0.8rem 5vw;
  }

  .top nav {
    order: 3;
    width: 100%;
    margin-left: 0;
  }

  .hero,
  .study {
    padding: 1.4rem;
    border-radius: 20px;
  }

  .hero-meta,
  .metrics,
  .charts,
  .mix,
  .section-head,
  .study,
  .rules,
  footer {
    grid-template-columns: 1fr;
    display: grid;
  }

  .metrics {
    display: grid;
  }

  footer {
    display: grid;
  }

  .top nav {
    display: flex;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}