:root {
  color-scheme: light;
  --paper: #f4f1e8;
  --ink: #181915;
  --muted: #53564b;
  --rule: #9b9b90;
  --serif: "Noto Serif SC", "Songti SC", "Source Han Serif SC", "SimSun", serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
}

.page {
  width: min(calc(100% - 2 * clamp(20px, 3vw, 56px)), 1600px);
  min-height: 100vh;
  min-height: 100svh;
  margin-inline: auto;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-block: clamp(24px, 4.5vh, 54px) clamp(18px, 2.6vh, 30px);
  border-bottom: 1px solid var(--rule);
  font-size: clamp(24px, 3.05vw, 46px);
  font-weight: 800;
  letter-spacing: .03em;
}

.mark {
  display: block;
  width: clamp(48px, 6vw, 96px);
  height: auto;
  filter: saturate(.44) brightness(.73);
}

main {
  position: relative;
  align-self: center;
  display: grid;
  isolation: isolate;
  margin-block: clamp(26px, 5vh, 60px);
}

main::after {
  content: "";
  grid-area: 1 / 1;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(90deg, transparent 38%, rgb(16 15 13 / 76%) 100%);
}

.copy {
  grid-area: 1 / 1;
  z-index: 2;
  justify-self: end;
  align-self: center;
  padding: clamp(24px, 5vw, 80px);
  color: #fff;
  text-shadow: 0 2px 12px rgb(0 0 0 / 55%);
}

h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 86px);
  line-height: 1.32;
  font-weight: 800;
}

h1 span { display: block; }

.intro {
  margin: clamp(16px, 3vw, 42px) 0 0;
  font-size: clamp(16px, 2vw, 31px);
  line-height: 1.55;
  letter-spacing: .04em;
}

.graphic {
  grid-area: 1 / 1;
  display: block;
  width: 100%;
  height: min(60vh, 680px);
  aspect-ratio: 1672 / 941;
  object-fit: cover;
  object-position: 42% 45%;
}

footer {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding-block: 22px 32px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: clamp(13px, 1.25vw, 19px);
  line-height: 1.5;
  letter-spacing: .045em;
  text-align: center;
}

footer a {
  color: inherit;
  text-underline-offset: .22em;
}

footer a:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
}

@media (max-width: 700px) {
  main::after {
    background: linear-gradient(180deg, transparent 42%, rgb(16 15 13 / 86%) 100%);
  }

  .graphic {
    height: auto;
    aspect-ratio: 4 / 5;
  }

  .copy {
    align-self: end;
    justify-self: start;
    padding: clamp(18px, 5vw, 36px);
  }

  h1 { font-size: clamp(32px, 8.5vw, 58px); }
}