@font-face {
  font-family: SourceHan;
  src: url('../fonts/SourceHanSansCN-Regular.otf');
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: RobotoCondensed;
  src: url('../fonts/RobotoCondensed-Variable.ttf');
  font-weight: 100 900;
  font-display: swap;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--ink);
  color: var(--paper);
  scroll-behavior: smooth;
  scrollbar-color: var(--moss) var(--ink);
}

body {
  margin: 0;
  overflow-x: hidden;
  font-family: SourceHan, sans-serif;
  font-size: var(--body);
  line-height: 1.55;
  text-rendering: geometricPrecision;
}

img, video { display: block; max-width: 100%; }
h1, h2, h3, p, figure, dl, dd, ul { margin: 0; }
h1, h2 {
  font-weight: 900;
  letter-spacing: -.045em;
  line-height: 1.02;
  text-wrap: balance;
}
h3 { line-height: 1.15; }

.eyebrow {
  font-family: RobotoCondensed, SourceHan, sans-serif;
  font-weight: 760;
  letter-spacing: .15em;
  line-height: 1;
  text-transform: uppercase;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  background: var(--moss);
  color: var(--ink);
  padding: .75rem 1rem;
}

.skip-link:focus { top: 1rem; }
:focus-visible { outline: 3px solid var(--moss); outline-offset: 4px; }

.chapter {
  position: relative;
  isolation: isolate;
  min-height: 100svh;
  overflow: hidden;
  padding: clamp(5.5rem, 7vw, 8rem) clamp(1.25rem, 6vw, 7rem) clamp(3rem, 5vw, 6rem);
}

.chapter::before {
  content: attr(data-chapter);
  position: absolute;
  right: clamp(1rem, 4vw, 5rem);
  bottom: clamp(.4rem, 1vw, 1rem);
  z-index: -1;
  color: currentColor;
  font: 900 clamp(7rem, 23vw, 22rem)/.8 RobotoCondensed, sans-serif;
  letter-spacing: -.08em;
  opacity: .065;
}

.chapter--dark { background: var(--ink); color: var(--paper); }
.chapter--light { background: var(--paper); color: var(--ink); }
.chapter--blue { background: var(--climb-blue); color: var(--white); }
.chapter__lead { max-width: 43rem; font-size: var(--lead); line-height: 1.55; }
.chapter__background { position: absolute; inset: 0; z-index: -3; width: 100%; height: 100%; object-fit: cover; }
.chapter__scrim { position: absolute; inset: 0; z-index: -2; background: rgb(10 13 14 / 62%); }
.noscript-note { padding: 1rem; background: var(--moss); color: var(--ink); }

dt, .value-list span, .capability-list span {
  font: 700 .78rem/1 RobotoCondensed, SourceHan, sans-serif;
  letter-spacing: .12em;
  text-transform: uppercase;
}

figcaption span, figcaption strong { display: block; }