:root {
  --paper: #f5f7fa;
  --ink: #101820;
  --navy: #17324d;
  --water: #2c87c8;
  --water-pale: #dce9f1;
  --rust: #bb4f32;
  --line: #b9c3cb;
  --muted: #596875;
  --section-indent: 3rem;
  --display: "Atkinson Hyperlegible", "Trebuchet MS", sans-serif;
  --body: "IBM Plex Sans", sans-serif;
  --mono: "IBM Plex Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  overflow-x: clip;
  background:
    linear-gradient(rgba(23, 50, 77, 0.025) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 32px;
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.5;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 1rem;
  z-index: 10;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: white;
  transform: translateY(-120%);
}

.skip-link:focus {
  transform: translateY(0);
}

main {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header,
.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  min-height: 72px;
  border-bottom: 1px solid var(--line);
}

.site-header {
  position: sticky;
  z-index: 40;
  top: 0;
  background: var(--paper);
  box-shadow: 0 8px 22px rgba(23, 50, 77, 0.1);
}

.wordmark {
  width: max-content;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.site-nav,
.site-footer nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.site-nav {
  border: 1px solid var(--navy);
}

.site-nav a,
.site-footer nav a,
.footer-back {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  text-underline-offset: 4px;
}

.site-nav a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  text-decoration: none;
}

.site-nav a + a {
  border-left: 1px solid var(--navy);
}

.site-nav .nav-positive {
  color: white;
  background: var(--navy);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: white;
  background: var(--rust);
  outline: none;
}

.site-footer nav {
  gap: 28px;
}

.page-bar {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.25rem 0 0.9rem;
  border-bottom: 1px solid var(--line);
  color: var(--navy);
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.back-link {
  color: var(--navy);
  font-weight: 500;
  text-decoration-thickness: 1px;
}

.back-link span,
.footer-back span {
  display: inline-block;
  margin-right: 0.35rem;
  transition: transform 140ms ease;
}

.back-link:hover span,
.back-link:focus-visible span,
.footer-back:hover span,
.footer-back:focus-visible span {
  transform: translateX(-3px);
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.75fr;
  gap: clamp(3rem, 9vw, 9rem);
  align-items: end;
  min-height: 430px;
  padding: clamp(4rem, 10vw, 8.5rem) 0 clamp(3.5rem, 7vw, 6rem);
  border-bottom: 3px solid var(--ink);
}

.hero h1 {
  max-width: 670px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.25rem, 6.7vw, 6.6rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 0.94;
}

.hero-answer {
  padding-bottom: 0.5rem;
}

.hero-answer strong {
  display: block;
  margin: 0 0 1.25rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--ink);
  color: var(--rust);
  font-family: var(--display);
  font-size: clamp(3.1rem, 5vw, 5.4rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 0.86;
}

.hero-answer p {
  max-width: 440px;
  margin: 0 0 1.2rem;
  color: var(--navy);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 500;
  line-height: 1.42;
}

.hero-answer a {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.argument-map {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
  z-index: 2;
  margin: 0;
  padding: 0;
  background: var(--navy);
  box-shadow: 0 0 0 100vmax var(--navy);
  clip-path: inset(0 -100vmax);
  color: white;
}

.argument-map a {
  min-height: 96px;
  padding: 1.25rem 1.2rem;
  color: inherit;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.25;
  text-decoration: none;
}

.argument-map a + a {
  border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.argument-map a:hover,
.argument-map a:focus-visible {
  background: rgba(255, 255, 255, 0.1);
}

.argument-map span {
  display: block;
  margin-bottom: 0.55rem;
  color: #85c4ec;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.water-path {
  padding: clamp(3rem, 6vw, 5rem) 0;
  background: white;
  box-shadow: 0 0 0 100vmax white;
  clip-path: inset(0 -100vmax);
}

.water-path > header {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) minmax(0, 1.45fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.water-path > header span,
.water-help > header span {
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.water-path h2 {
  max-width: 760px;
  margin: 0;
  color: var(--navy);
  font-family: var(--display);
  font-size: clamp(2.2rem, 4vw, 4rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.04;
}

.water-path-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-block: 1px solid var(--line);
}

.water-path-step {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 1.1rem;
  min-height: 190px;
  padding: 1.6rem 1.6rem 1.6rem 0;
}

.water-path-step + .water-path-step {
  padding-left: 1.6rem;
  border-left: 1px solid var(--line);
}

.water-path-step svg {
  width: 72px;
  height: 72px;
  fill: none;
  stroke: var(--water);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.5;
}

.water-path-step strong {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--navy);
  font-family: var(--display);
  font-size: 1.45rem;
  line-height: 1.1;
}

.water-path-step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.story-section {
  position: relative;
  isolation: isolate;
  padding: clamp(4rem, 8vw, 7rem) 0;
  border-bottom: 0;
}

.story-section::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0 auto 0 50%;
  width: 100vw;
  transform: translateX(-50%);
  background: var(--section-ground, var(--paper));
}

.concern-section {
  --section-ground: #f7ece8;
}

.evidence-section {
  --section-ground: #eaf3f8;
}

.claim-section {
  --section-ground: #f7f9fb;
}

.action-section {
  --section-ground: #e8edf2;
}

.section-heading {
  margin-bottom: clamp(2.25rem, 5vw, 4.5rem);
}

.section-heading span {
  display: inline-block;
  width: fit-content;
  margin-bottom: 1rem;
  padding: 0.45rem 0.65rem;
  background: var(--rust);
  color: white;
  font-family: var(--body);
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.section-heading h2 {
  max-width: 980px;
  margin: 0;
  color: var(--navy);
  font-family: var(--display);
  font-size: clamp(2.65rem, 5.1vw, 5rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.02;
}

.section-intro {
  max-width: 820px;
  margin: 0 0 clamp(2.8rem, 6vw, 5rem);
  color: var(--navy);
  font-size: clamp(1.08rem, 1.7vw, 1.35rem);
  line-height: 1.6;
}

.claim-path {
  display: grid;
  grid-template-columns: 0.8fr 1.1fr 1fr;
  gap: 2rem;
}

.claim-step {
  min-height: 250px;
  padding-top: 1.25rem;
  border-top: 3px solid var(--ink);
}

.claim-study {
  border-color: var(--water);
}

.claim-viral {
  border-color: var(--rust);
}

.claim-step > strong {
  display: block;
  margin: 0 0 0.5rem;
  font-family: var(--display);
  font-size: clamp(2.4rem, 5vw, 5.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.98;
}

.claim-viral > strong {
  max-width: 270px;
  color: var(--rust);
  font-size: clamp(2rem, 3.8vw, 3.8rem);
  font-style: normal;
}

.claim-step p {
  max-width: 250px;
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.claim-bottle {
  cursor: pointer;
}

.claim-bottle:focus-visible {
  outline: 3px solid var(--water);
  outline-offset: 0.4rem;
}

.bottle {
  position: relative;
  width: 62px;
  height: 112px;
  margin: 0 0 1rem 4px;
  border: 2px solid var(--navy);
  border-radius: 7px 7px 9px 9px;
  overflow: visible;
}

.bottle::before {
  content: "";
  position: absolute;
  top: -16px;
  left: 17px;
  width: 24px;
  height: 15px;
  border: 2px solid var(--navy);
  border-bottom: 0;
  border-radius: 3px 3px 0 0;
  background: var(--paper);
}

.bottle span {
  position: absolute;
  inset: 37% 0 0;
  background: var(--water);
  opacity: 0.7;
  transition: inset 600ms ease;
}

.claim-bottle.is-drained .bottle span {
  inset: 92% 0 0;
}

.claim-bottle > strong {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

.claim-summary {
  max-width: 600px;
  margin: 1rem 0 3.5rem;
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(1.8rem, 3vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.12;
}

.current-model {
  display: grid;
  grid-template-columns: minmax(180px, 0.7fr) 1.3fr;
  gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
  padding: clamp(2rem, 4vw, 3.5rem);
  border-left: 5px solid var(--water);
  background: white;
}

.five-drops {
  display: flex;
  gap: clamp(0.55rem, 1.5vw, 1.15rem);
}

.five-drops span {
  width: clamp(22px, 3.6vw, 42px);
  aspect-ratio: 0.75;
  border-radius: 52% 48% 55% 45% / 62% 46% 54% 38%;
  background: var(--water);
  transform: rotate(45deg);
}

.small-label {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--water);
  font-family: var(--mono);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.current-model strong {
  display: block;
  color: var(--navy);
  font-family: var(--display);
  font-size: clamp(2.6rem, 5vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}

.current-model p {
  max-width: 560px;
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.why-it-spreads {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: clamp(2rem, 6vw, 6rem);
  margin-top: 3rem;
  padding-left: 1.4rem;
  border-left: 5px solid var(--rust);
}

.why-it-spreads h3 {
  margin: 0;
  color: var(--navy);
  font-family: var(--display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 400;
  line-height: 1.05;
}

.why-it-spreads p {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

sup a {
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.68em;
  font-weight: 500;
  text-decoration-thickness: 1px;
}

sup + sup {
  margin-left: 0.2rem;
}

.evidence-copy {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 6vw, 6rem);
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.evidence-copy p {
  margin: 0;
  color: var(--navy);
  font-size: 1.04rem;
  line-height: 1.65;
}

.scale-proof {
  margin: 0;
  padding: clamp(2rem, 5vw, 4rem);
  overflow: hidden;
  background: var(--navy);
  color: white;
}

.scale-proof-heading {
  display: grid;
  grid-template-columns: minmax(170px, 0.45fr) minmax(0, 1.55fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.scale-proof-heading > span,
.almond-copy > span {
  color: #8cc9ec;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.scale-proof-heading strong {
  display: block;
  margin-bottom: 1.5rem;
  color: #8cc9ec;
  font-family: var(--display);
  font-size: clamp(6rem, 14vw, 12rem);
  font-weight: 400;
  letter-spacing: -0.065em;
  line-height: 0.72;
}

.scale-proof-heading h3 {
  max-width: 760px;
  margin: 0;
  color: white;
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 4rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.04;
}

.scale-proof sup a {
  color: #8cc9ec;
}

.water-bars {
  margin-top: clamp(3rem, 7vw, 6rem);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: #102e49;
}

.water-bar-row {
  display: grid;
  grid-template-columns: minmax(230px, 0.72fr) minmax(0, 1.28fr);
  gap: 1.4rem;
  align-items: center;
  padding: 0.8rem 0;
}

.water-bar-row + .water-bar-row {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.water-bar-label strong,
.water-bar-label span {
  display: block;
}

.water-bar-label strong {
  font-size: 1rem;
}

.water-bar-label span {
  margin-top: 0.15rem;
  color: #c9d9e4;
  font-size: 0.85rem;
}

.water-bar-track {
  position: relative;
  height: 24px;
  background: rgba(255, 255, 255, 0.08);
}

.water-bar-track i {
  display: block;
  width: var(--bar-width);
  min-width: 2px;
  height: 100%;
  background: #66b5e2;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 900ms cubic-bezier(0.22, 1, 0.36, 1);
}

.is-visible .water-bar-track i {
  transform: scaleX(1);
}

.water-bar-row.is-data-center .water-bar-track i {
  background: var(--rust);
}

.water-bar-row.is-onsite .water-bar-track i {
  background: #f0a087;
}

.water-bars-note {
  max-width: 850px;
  margin: 1.6rem 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: #c9d9e4;
  font-size: 0.88rem;
  line-height: 1.55;
}

.almond-proof {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
  margin-top: clamp(3rem, 7vw, 6rem);
  padding-top: clamp(3rem, 6vw, 5rem);
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.almond-copy strong {
  display: block;
  max-width: 610px;
  margin: 1rem 0 1.25rem;
  font-family: var(--display);
  font-size: clamp(2rem, 3.7vw, 3.7rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.04;
}

.almond-visual {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem clamp(1.5rem, 3vw, 3rem);
  align-items: end;
}

.almond-ratio strong,
.almond-ratio span {
  display: block;
}

.almond-ratio strong {
  color: #8cc9ec;
  font-family: var(--display);
  font-size: clamp(5rem, 10vw, 9rem);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 0.78;
  white-space: nowrap;
}

.almond-ratio span {
  margin-top: 0.9rem;
  color: #d9e8f1;
  font-size: 1rem;
  font-weight: 600;
}

.almond-drops {
  display: grid;
  grid-template-columns: repeat(6, minmax(24px, 1fr));
  gap: clamp(0.35rem, 0.9vw, 0.75rem);
  align-items: end;
}

.almond-drops i,
.almond-key > i {
  position: relative;
  display: block;
  aspect-ratio: 0.64;
  border-radius: 58% 42% 62% 38% / 70% 45% 55% 30%;
  border: 3px solid #8cc9ec;
  transform: rotate(38deg) scale(0.72);
}

.almond-drops i::after,
.almond-key > i::after {
  content: "";
  position: absolute;
  top: 14%;
  bottom: 14%;
  left: 50%;
  width: 1px;
  background: #8cc9ec;
  transform: rotate(-8deg);
}

.almond-drops i {
  opacity: 0;
  transition: opacity 350ms ease-out, transform 450ms cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: calc(var(--drop-index) * 65ms);
}

.is-visible .almond-drops i {
  opacity: 1;
  transform: rotate(38deg) scale(1);
}

.almond-key,
.almond-values {
  margin: 0;
}

.almond-key {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 0.7rem;
  align-items: center;
  max-width: 300px;
  color: #d9e8f1;
  font-size: 0.86rem;
  line-height: 1.35;
}

.almond-key > i {
  width: 14px;
  border-width: 2px;
}

.almond-key strong {
  color: white;
}

.almond-values {
  display: flex;
  justify-content: flex-end;
  gap: 1.1rem;
  color: #b8cedc;
  font-size: 0.82rem;
}

.almond-values strong {
  color: white;
}

.almond-caveat {
  grid-column: 2;
  max-width: 620px;
  margin: -1rem 0 0;
  color: #c9d9e4;
  font-size: 0.9rem;
  line-height: 1.5;
}

.scale-proof figcaption {
  max-width: 830px;
  margin-top: clamp(3rem, 6vw, 5rem);
  padding-top: 1.4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  color: #c9d9e4;
  font-size: 0.95rem;
  line-height: 1.6;
}


.local-graphic {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 7vw, 7rem);
  align-items: center;
}

.thirds {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.55rem;
}

.thirds span {
  aspect-ratio: 1;
  background: var(--water-pale);
}

.thirds .used {
  background: var(--rust);
}

.local-copy > strong {
  display: block;
  color: var(--rust);
  font-family: var(--display);
  font-size: clamp(3.5rem, 7vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.9;
}

.local-copy > p {
  max-width: 510px;
  color: var(--navy);
  font-size: clamp(1rem, 1.7vw, 1.3rem);
  font-weight: 500;
}

.local-copy .local-rule {
  margin-top: 1.8rem;
  padding-left: 1.2rem;
  border-left: 2px solid var(--water);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 400;
}

.policy-line {
  margin: 0 0 clamp(3rem, 7vw, 6rem) var(--section-indent);
  font-family: var(--display);
  font-size: clamp(3.6rem, 6vw, 6rem);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 1;
}

.policy-line span,
.policy-line em {
  display: block;
}

.policy-line em {
  color: var(--rust);
  font-style: normal;
}

.requirements {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 0 0 3rem;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.requirements li {
  min-height: 150px;
  padding: 1.1rem 1.4rem 1.5rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--navy);
  font-size: 0.95rem;
  font-weight: 500;
}

.requirements li + li {
  padding-left: 1.4rem;
  border-left: 1px solid var(--line);
}

.requirements span {
  display: block;
  margin-bottom: 2rem;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.66rem;
}

.plain-conclusion {
  max-width: 790px;
  margin: 0;
  color: var(--navy);
  font-family: var(--display);
  font-size: clamp(1.9rem, 3.5vw, 3.5rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.water-help {
  position: relative;
  margin-top: clamp(4rem, 9vw, 8rem);
  padding: clamp(4rem, 8vw, 7rem) 0;
  background: #087bb5;
  box-shadow: 0 0 0 100vmax #087bb5;
  clip-path: inset(0 -100vmax);
  color: white;
}

.water-help > header {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.water-help > header span {
  color: #8cc9ec;
}

.water-help > header h3 {
  max-width: 1050px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(4rem, 8vw, 8rem);
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 0.88;
}

.water-help > header p {
  max-width: 580px;
  margin: 0;
  color: white;
  font-size: 1.05rem;
}

.water-help-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-block: 1px solid rgba(255, 255, 255, 0.24);
}

.water-help-grid > div {
  min-height: 180px;
  padding: 1.6rem 1.8rem 1.8rem 0;
}

.water-help-grid > div:nth-child(even) {
  padding-left: 1.8rem;
  border-left: 1px solid rgba(255, 255, 255, 0.24);
}

.water-help-grid > div:nth-child(n + 3) {
  border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.water-help-grid strong {
  display: block;
  margin-bottom: 0.75rem;
  color: white;
  font-family: var(--display);
  font-size: clamp(1.55rem, 2.5vw, 2.3rem);
  line-height: 1.05;
}

.water-help-grid p {
  max-width: 430px;
  margin: 0;
  color: #e8f5fb;
  font-size: 0.95rem;
  line-height: 1.55;
}

.water-help sup a {
  color: #8cc9ec;
}

.water-help-close {
  max-width: 820px;
  margin: clamp(2.5rem, 5vw, 4rem) 0 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.5vw, 3.4rem);
  letter-spacing: -0.025em;
  line-height: 1.12;
}

.sources {
  margin: 0 0 6rem;
  border-bottom: 3px solid var(--ink);
}

.sources-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--navy);
  font-family: var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sources-heading h2 {
  margin: 0;
  font: inherit;
  font-size: 1rem;
}

.sources-heading span {
  color: var(--muted);
  font-size: 0.9rem;
}

.sources ol {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: sources;
}

.sources li {
  position: relative;
  min-height: 140px;
  padding: 1.35rem 1.5rem 1.5rem 3.4rem;
  border-bottom: 1px solid var(--line);
  counter-increment: sources;
}

.sources li:nth-child(odd) {
  border-right: 1px solid var(--line);
}

.sources li::before {
  content: counter(sources, decimal-leading-zero);
  position: absolute;
  top: 1.4rem;
  left: 0;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.sources li > a:first-child {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--navy);
  font-weight: 600;
}

.sources li span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.sources .backref {
  position: absolute;
  top: 1.25rem;
  right: 1rem;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.82rem;
  text-decoration: none;
}

.sources li:target {
  background: var(--water-pale);
}

.site-footer {
  width: min(1180px, calc(100% - 48px));
  grid-template-columns: 1fr auto;
  gap: 42px;
  min-height: 112px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
  border-bottom: 0;
}

.footer-back {
  color: var(--rust);
}

.easter-egg {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 5;
  max-width: 330px;
  padding: 0.9rem 1.1rem;
  background: var(--navy);
  color: white;
  font-family: var(--mono);
  font-size: 0.72rem;
  box-shadow: 0 8px 30px rgba(16, 24, 32, 0.22);
}

.js .reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 760px) {
  :root {
    --section-indent: 2.4rem;
  }

  body {
    font-size: 17px;
  }

  html {
    scroll-padding-top: 126px;
  }

  main {
    width: min(100% - 30px, 620px);
  }

  .site-header {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 10px 0 12px;
  }

  .site-nav {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    width: 100%;
  }

  .site-nav a {
    justify-content: center;
    padding: 0 10px;
    font-size: 13px;
  }

  .page-bar {
    gap: 0.75rem;
    font-size: 0.72rem;
  }

  .back-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }

  .page-bar span:last-child {
    text-align: right;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 2.8rem;
    min-height: 0;
    padding: 4.5rem 0 3.5rem;
  }

  .hero h1 {
    font-size: clamp(3.5rem, 17vw, 5.1rem);
  }

  .hero-answer strong {
    font-size: 4rem;
  }

  .argument-map {
    grid-template-columns: repeat(2, 1fr);
  }

  .argument-map a {
    min-height: 86px;
    padding: 1rem 0.8rem;
    font-size: 0.94rem;
  }

  .argument-map a:nth-child(3) {
    border-left: 0;
  }

  .argument-map a:nth-child(n + 3) {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }

  .water-path > header,
  .water-path-steps {
    grid-template-columns: 1fr;
  }

  .water-path > header {
    gap: 1.2rem;
  }

  .water-path-step {
    grid-template-columns: 64px 1fr;
    min-height: 0;
    padding: 1.4rem 0;
  }

  .water-path-step + .water-path-step {
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .water-path-step svg {
    width: 58px;
    height: 58px;
  }

  .story-section {
    padding: 4rem 0;
  }

  .section-heading {
    margin-bottom: 2rem;
  }

  .section-heading h2 {
    font-size: clamp(2.6rem, 12vw, 4rem);
  }

  .claim-path {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .claim-step {
    display: grid;
    grid-template-columns: 0.55fr 1fr;
    gap: 1.25rem;
    align-items: center;
    min-height: 0;
    padding: 1.2rem 0;
  }

  .claim-step > strong,
  .claim-step > .bottle {
    grid-row: span 2;
  }

  .claim-step > strong {
    font-size: 3rem;
  }

  .claim-viral > strong {
    font-size: 2.2rem;
  }

  .claim-bottle > strong {
    align-self: end;
    font-size: 0.65rem;
  }

  .claim-bottle .bottle {
    margin-left: 0;
  }

  .claim-summary {
    margin-top: 2.2rem;
  }

  .current-model {
    grid-template-columns: 1fr;
    gap: 1.8rem;
    padding: 1.6rem;
  }

  .evidence-copy,
  .why-it-spreads {
    grid-template-columns: 1fr;
  }

  .scale-proof {
    padding: 1.5rem;
  }

  .scale-proof-heading,
  .almond-proof {
    grid-template-columns: 1fr;
  }

  .scale-proof-heading {
    gap: 2.5rem;
  }

  .scale-proof-heading strong {
    font-size: 7.4rem;
  }

  .water-bars {
    margin-inline: -0.35rem;
    padding: 1.25rem;
  }

  .water-bar-row {
    grid-template-columns: 1fr;
    gap: 0.65rem;
    padding: 1rem 0;
  }

  .almond-proof {
    gap: 2.75rem;
  }

  .almond-visual {
    grid-template-columns: 1fr;
    gap: 1.6rem;
  }

  .almond-ratio strong {
    font-size: clamp(5.2rem, 26vw, 7rem);
  }

  .almond-drops {
    grid-row: 2;
  }

  .almond-values {
    display: grid;
    justify-content: start;
    gap: 0.2rem;
  }

  .almond-caveat {
    grid-column: 1;
    margin-top: -1rem;
  }

  .local-graphic {
    grid-template-columns: 1fr;
  }

  .local-copy > strong {
    font-size: 4.7rem;
  }

  .policy-line {
    font-size: clamp(3.25rem, 15vw, 4.5rem);
  }

  .requirements {
    grid-template-columns: 1fr;
  }

  .requirements li {
    display: grid;
    grid-template-columns: 2.4rem 1fr;
    gap: 0.5rem;
    min-height: 0;
    padding: 1.2rem 0;
  }

  .requirements li + li {
    padding-left: 0;
    border-left: 0;
  }

  .requirements span {
    margin: 0;
  }

  .water-help {
    padding: 4rem 0;
  }

  .water-help > header,
  .water-help-grid {
    grid-template-columns: 1fr;
  }

  .water-help > header {
    gap: 1.2rem;
  }

  .water-help > header h3 {
    font-size: clamp(4rem, 20vw, 5.6rem);
  }

  .water-help-grid > div,
  .water-help-grid > div:nth-child(even) {
    min-height: 0;
    padding: 1.4rem 0;
    border-left: 0;
  }

  .water-help-grid > div + div {
    border-top: 1px solid rgba(255, 255, 255, 0.24);
  }

  .sources ol {
    grid-template-columns: 1fr;
  }

  .sources li:nth-child(odd) {
    border-right: 0;
  }

  .site-footer {
    width: min(100% - 30px, 620px);
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 30px 0;
  }

  .site-footer nav {
    justify-content: space-between;
    gap: 12px;
  }

  .site-footer nav a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}