:root {
  color-scheme: dark;
  --charcoal: #141614;
  --plate: #2c312c;
  --ink: #f3efe6;
  --quiet: rgba(243, 239, 230, 0.72);
  --line: rgba(243, 239, 230, 0.18);
  --signal: #c6f04a;
  --column: 38rem;
  --margin: 1.25rem;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--charcoal);
}

body {
  margin: 0;
  background: var(--charcoal);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
}

.skip {
  position: absolute;
  left: var(--margin);
  top: -4rem;
  background: var(--signal);
  color: var(--charcoal);
  padding: 0.5rem 0.75rem;
}

.skip:focus {
  top: 0.75rem;
  z-index: 2;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.wrap {
  width: min(var(--column), calc(100% - var(--margin) * 2));
  margin-inline: auto;
}

.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0 0.5rem;
}

.mark {
  font-family: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "Iowan Old Style", Palatino, serif;
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 1rem;
}

.nav a {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--quiet);
}

.nav a[aria-current="page"] {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 0.35rem;
}

main {
  padding-bottom: 4rem;
}

.plate {
  margin-top: 1.5rem;
  padding: 1.5rem 1.25rem 1.35rem;
  background:
    linear-gradient(var(--ink), var(--ink)) 0 0 / 12px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) 0 0 / 1px 12px no-repeat,
    linear-gradient(var(--ink), var(--ink)) 100% 0 / 12px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) 100% 0 / 1px 12px no-repeat,
    linear-gradient(var(--ink), var(--ink)) 0 100% / 12px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) 0 100% / 1px 12px no-repeat,
    linear-gradient(var(--ink), var(--ink)) 100% 100% / 12px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) 100% 100% / 1px 12px no-repeat,
    var(--plate);
}

.kicker {
  margin: 0;
  color: var(--quiet);
  font-size: 0.95rem;
}

h1 {
  margin: 0.35rem 0 0;
  font-family: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "Iowan Old Style", Palatino, serif;
  font-size: clamp(2.4rem, 8vw, 3.5rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.02em;
}

.plate p {
  margin: 1rem 0 0;
  max-width: 34em;
}

.signal {
  color: var(--signal);
}

section {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 0.6rem;
  font-size: 1.2rem;
  font-weight: 600;
}

p {
  margin: 0.75rem 0 0;
}

ul {
  margin: 0.75rem 0 0;
  padding-left: 1.15rem;
}

li + li {
  margin-top: 0.45rem;
}

.mail {
  color: var(--signal);
}

footer {
  margin-top: 2.5rem;
  color: var(--quiet);
  font-size: 0.95rem;
}