:root {
  color-scheme: light;
  --bg: #f8f7f4;
  --paper: #fffdf9;
  --ink: #1b1915;
  --muted: #635d54;
  --line: #ded9d1;
  --accent: #a45c2a;
  --accent-strong: #854419;
  --soft: #ede7dd;
  --dark: #0a0907;
  --display: "Space Grotesk", sans-serif;
  --body: "DM Sans", sans-serif;
}
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a0907;
  --paper: #171511;
  --ink: #faf8f5;
  --muted: #c1b8ac;
  --line: #37322b;
  --accent: #e3a06e;
  --accent-strong: #f1b788;
  --soft: #29231c;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px / 1.55 var(--body);
}
a {
  color: inherit;
}
button {
  font: inherit;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1,
h2,
h3 {
  font-family: var(--display);
}
.wrap {
  width: min(100% - 48px, 1240px);
  margin-inline: auto;
}
.skip {
  position: absolute;
  z-index: 20;
  top: -80px;
  left: 16px;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--bg);
}
.skip:focus {
  top: 12px;
}
.site-header {
  border-bottom: 1px solid var(--line);
}
.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font: 700 24px / 1 var(--display);
  letter-spacing: -0.075em;
  text-decoration: none;
  white-space: nowrap;
}
.wordmark-icon {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  border: 1.5px solid var(--accent);
  border-radius: 7px;
  color: var(--accent);
  font: 20px / 1 var(--display);
  letter-spacing: 0;
}
.wordmark-slash {
  color: var(--accent);
}
nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
}
nav a,
.footer-inner > a:last-child {
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}
nav a:hover,
.footer-inner > a:last-child:hover,
.text-link:hover {
  color: var(--accent-strong);
}
.theme-controls {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 100px;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.theme-controls button {
  width: 27px;
  height: 27px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  font: 700 10px var(--display);
  cursor: pointer;
}
.theme-controls button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--bg);
}
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  align-items: center;
  gap: clamp(32px, 6vw, 92px);
  min-height: min(760px, calc(100svh - 76px));
  padding-block: 72px;
}
.eyebrow,
.section-index,
.art-top,
.art-num,
.art-caption,
.factor-header,
.step-number,
.statement-inner > span {
  font: 700 11px / 1.4 var(--display);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 13px;
  color: var(--accent-strong);
}
.eyebrow-rule {
  display: inline-block;
  width: 31px;
  height: 1px;
  background: var(--accent);
}
h1 {
  font-size: clamp(64px, 7.1vw, 112px);
  line-height: 0.94;
  letter-spacing: -0.095em;
  margin: 25px 0 28px;
}
h1 em {
  font-style: normal;
  color: var(--accent-strong);
}
.lede {
  max-width: 570px;
  font-size: clamp(19px, 2vw, 23px);
  line-height: 1.42;
  color: var(--muted);
}
.actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 25px;
  margin-top: 34px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  min-height: 51px;
  padding: 0 20px;
  background: var(--accent-strong);
  border: 1px solid var(--accent-strong);
  border-radius: 6px;
  color: #fffdf9;
  text-decoration: none;
  font-weight: 700;
  font-size: 13px;
}
.button:hover {
  filter: brightness(1.12);
}
html[data-theme="dark"] .button {
  color: #0a0907;
}
.text-link {
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 3px;
}
.access-note {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 27px 0 0;
  color: var(--muted);
  font-size: 12px;
}
.access-note span {
  font-size: 8px;
  color: var(--accent);
}
.hero-art {
  position: relative;
  min-height: 460px;
  padding: 25px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 0 30px 70px rgba(35, 22, 7, 0.1);
  overflow: hidden;
}
.hero-art:before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 98%, var(--line) 99%),
    linear-gradient(transparent 98%, var(--line) 99%);
  background-size: 30px 30px;
  opacity: 0.25;
  pointer-events: none;
}
.art-top {
  position: relative;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.art-source,
.art-row,
.art-signal {
  position: relative;
  display: grid;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  background: var(--paper);
}
.art-source {
  grid-template-columns: 40px 1fr auto;
  margin: 39px 0 0;
  padding: 18px;
}
.art-source span:nth-child(2),
.art-row span:nth-child(2) {
  color: var(--muted);
  font-size: 12px;
}
.art-source strong,
.art-row strong {
  font: 600 13px var(--display);
}
.art-route {
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.art-route i {
  width: 3px;
  height: 3px;
  background: var(--accent);
  border-radius: 50%;
}
.art-route i:nth-child(2) {
  width: 3px;
  height: 28px;
  border-radius: 0;
}
.art-row {
  grid-template-columns: 40px 1fr auto;
  margin: 0 24px;
  padding: 18px;
  border-color: var(--accent);
}
.art-signal {
  display: flex;
  gap: 18px;
  margin: 35px 7px 0;
  padding: 20px;
  background: var(--soft);
}
.signal-mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 47px;
  height: 47px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--accent-strong);
  font: 30px var(--display);
}
.art-signal strong,
.art-signal small {
  display: block;
}
.art-signal strong {
  font: 600 20px var(--display);
  letter-spacing: -0.045em;
}
.art-signal small {
  font-size: 11px;
  color: var(--muted);
}
.art-caption {
  position: relative;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 9px;
  text-align: center;
}
.statement {
  border-block: 1px solid var(--line);
  background: var(--paper);
}
.statement-inner {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 40px;
  align-items: start;
  padding-block: 60px;
}
.statement-inner > span {
  color: var(--accent);
}
.statement p {
  margin: 0;
  max-width: 940px;
  font: 500 clamp(25px, 3vw, 43px) / 1.2 var(--display);
  letter-spacing: -0.055em;
}
.statement em {
  font-style: normal;
  color: var(--accent-strong);
}
.section {
  padding-block: clamp(82px, 10vw, 132px);
}
.section-index {
  color: var(--accent-strong);
}
.section h2 {
  font-size: clamp(43px, 5vw, 72px);
  line-height: 1;
  letter-spacing: -0.075em;
}
.method {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(45px, 8vw, 140px);
}
.section-head p:last-child {
  max-width: 370px;
  color: var(--muted);
}
.method-list {
  border-top: 1px solid var(--line);
}
.method-list article {
  display: grid;
  grid-template-columns: 44px 1fr 22px;
  gap: 19px;
  padding: 27px 0;
  border-bottom: 1px solid var(--line);
}
.step-number {
  padding-top: 6px;
  color: var(--accent);
}
.method-list h3 {
  font-size: 22px;
  letter-spacing: -0.045em;
  margin-bottom: 8px;
}
.method-list p {
  max-width: 530px;
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}
.step-arrow {
  color: var(--accent);
  font-size: 22px;
}
.signal-section {
  background: var(--soft);
  border-block: 1px solid var(--line);
}
.signal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(40px, 9vw, 150px);
}
.signal-grid > div:first-child > p:last-child {
  max-width: 480px;
  color: var(--muted);
  font-size: 17px;
}
.factor-card {
  padding: 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 0 18px 45px rgba(35, 22, 7, 0.06);
}
.factor-header {
  display: flex;
  justify-content: space-between;
  color: var(--accent);
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
  font-size: 10px;
}
.factor-line {
  display: grid;
  grid-template-columns: 115px 1fr 28px;
  gap: 17px;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  font: 600 13px var(--display);
}
.factor-line i {
  height: 7px;
  background: linear-gradient(to right, var(--accent) var(--fill), var(--soft) var(--fill));
  border-radius: 8px;
}
.factor-line b {
  font-size: 11px;
  color: var(--muted);
}
.factor-card > p {
  font-size: 11px;
  color: var(--muted);
  margin: 21px 0 0;
}
.boundary-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 10vw, 150px);
}
.boundary-layout > div:first-child > p {
  max-width: 495px;
  color: var(--muted);
  font-size: 17px;
}
.boundary-details {
  border-top: 1px solid var(--line);
}
.boundary-details > div {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.boundary-details strong {
  font: 600 14px var(--display);
}
.boundary-details p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.site-footer {
  border-top: 1px solid var(--line);
}
.footer-inner {
  min-height: 118px;
  display: flex;
  align-items: center;
  gap: 30px;
}
.footer-inner span {
  margin-right: auto;
  color: var(--muted);
  font-size: 12px;
}
@media (max-width: 1050px) {
  .hero {
    gap: 30px;
  }
  .hero-art {
    min-height: 445px;
  }
  .art-source,
  .art-row {
    grid-template-columns: 30px 1fr;
  }
  .art-source strong,
  .art-row strong {
    grid-column: 2;
  }
  .method {
    gap: 45px;
  }
}
@media (max-width: 760px) {
  .wrap {
    width: min(100% - 36px, 1240px);
  }
  .header-inner {
    min-height: 66px;
    flex-wrap: wrap;
    gap: 12px;
    padding-block: 10px;
  }
  .wordmark {
    font-size: 22px;
  }
  nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 10px;
    margin-left: 0;
    padding-bottom: 5px;
  }
  nav a {
    font-size: 11px;
  }
  .theme-controls {
    margin-left: auto;
  }
  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-block: 68px;
    min-height: 0;
  }
  h1 {
    font-size: clamp(60px, 12vw, 94px);
  }
  .hero-art {
    max-width: 610px;
    width: 100%;
    margin-inline: auto;
  }
  .statement-inner {
    grid-template-columns: 1fr;
    gap: 18px;
    padding-block: 50px;
  }
  .method,
  .signal-grid,
  .boundary-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .section {
    padding-block: 80px;
  }
  .section h2 {
    margin-bottom: 20px;
  }
  .footer-inner {
    flex-wrap: wrap;
    justify-content: space-between;
    padding-block: 30px;
  }
  .footer-inner span {
    order: 3;
    width: 100%;
  }
}
@media (max-width: 420px) {
  .hero-art {
    padding: 17px;
    min-height: 440px;
  }
  .art-top,
  .art-num {
    font-size: 9px;
  }
  .art-row {
    margin-inline: 8px;
  }
  .art-signal {
    margin-inline: 0;
  }
  .art-caption {
    font-size: 8px;
  }
  .access-note {
    align-items: flex-start;
  }
  .factor-card {
    padding: 20px;
  }
  .factor-line {
    grid-template-columns: 88px 1fr 23px;
    gap: 9px;
    font-size: 11px;
  }
  .boundary-details > div {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}