:root {
  font-family: "MS PGothic", "Yu Gothic", sans-serif;
  color: #24211d;
  background: #f4f0e6;
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body {
  min-width: 280px;
  min-height: 100vh;
  margin: 0;
  background-color: #f4f0e6;
  background-image:
    linear-gradient(#ffffff66 1px, transparent 1px),
    linear-gradient(90deg, #ffffff4d 1px, transparent 1px);
  background-size: 4px 4px;
}

.entrance {
  position: relative;
  display: grid;
  place-items: center;
  min-height: calc(100vh - 42px);
  padding: 48px 20px 36px;
  overflow: hidden;
  isolation: isolate;
}

.outlet-watermark {
  position: absolute;
  z-index: -1;
  top: 50%;
  left: 50%;
  width: auto;
  max-width: none;
  height: min(88vh, 820px);
  opacity: .12;
  filter: grayscale(.18) contrast(.92);
  mix-blend-mode: multiply;
  transform: translate(-50%, -50%) rotate(-3deg);
  pointer-events: none;
}

.entrance-copy {
  display: grid;
  justify-items: center;
  text-align: center;
}

.kicker {
  margin: 0 0 18px;
  color: #625d53;
  font: bold .68rem "Courier New", monospace;
  letter-spacing: .22em;
}

h1 {
  margin: 0;
  color: #233a78;
  font-family: "Yu Mincho", "MS Mincho", serif;
  font-size: clamp(2.6rem, 6vw, 3.65rem);
  font-weight: normal;
  line-height: 1.05;
  letter-spacing: .13em;
  text-shadow: 1px 1px 0 #fff;
  writing-mode: vertical-rl;
}

.description {
  margin-top: 24px;
  font-size: .9rem;
  line-height: 1.8;
}

.description p { margin: 3px 0; }

.enter-link { margin: 19px 0 0; }

.enter-link a {
  color: #0000cc;
  font-weight: bold;
  text-decoration: underline;
}

.enter-link a:visited { color: #551a8b; }
.enter-link a:hover { color: #cc0000; }
.enter-link a:focus-visible { outline: 2px dotted currentColor; outline-offset: 4px; }

.construction {
  margin: 9px 0 0;
  color: #706a60;
  font-size: .7rem;
}

footer {
  min-height: 42px;
  padding: 10px 16px;
  border-top: 1px dotted #aaa294;
  color: #787167;
  text-align: center;
  font-family: "Courier New", monospace;
}

@media (max-width: 520px) {
  .entrance { min-height: calc(100svh - 38px); padding: 28px 14px 24px; }
  .outlet-watermark { width: auto; height: 78svh; opacity: .095; }
  .kicker { margin-bottom: 13px; }
  h1 { font-size: clamp(2.25rem, 11vw, 3.1rem); }
  .description { margin-top: 18px; font-size: .82rem; }
  footer { min-height: 38px; padding: 8px 10px; }
}

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