.scroll-intro {
  --unroll-time: 920ms;
  --unroll-ease: cubic-bezier(.24,.78,.22,1);
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 18px;
  border: 0;
  background: radial-gradient(ellipse at 50% 42%, #19212de8, #090d13);
  color: #f7eddb;
  overflow: hidden;
}

.scroll-intro[open] { display: grid; place-items: center; }
.scroll-intro::backdrop { background: #090d13; }
.scroll-intro.is-leaving { opacity: 0; transition: opacity 260ms ease; }
.scroll-intro.is-leaving::backdrop { opacity: 0; transition: opacity 260ms ease; }

.scroll-trigger {
  display: grid;
  justify-items: center;
  gap: clamp(26px, 5vh, 46px);
  padding: 10px;
  border: 0;
  background: transparent;
  color: inherit;
}

.scroll-stage {
  --roller-width: clamp(24px, 5.3vw, 48px);
  display: block;
  position: relative;
  isolation: isolate;
  width: min(85vw, 760px);
  height: clamp(205px, 46dvh, 382px);
}

.scroll-paper {
  position: absolute;
  inset: 7px calc(var(--roller-width) / 2);
  padding: clamp(9px, 2vw, 22px);
  display: grid;
  place-items: center;
  background:
    url("assets/ink-grain.svg") 0 0 / 300px,
    linear-gradient(90deg, #a58057, #e4c8a0 9%, #efdcb6 49%, #ebd3aa 89%, #a58057);
  box-shadow: inset 0 0 22px #65462c8c;
  clip-path: inset(0 calc(50% - var(--roller-width) / 2));
  transition: clip-path var(--unroll-time) var(--unroll-ease);
}

.scroll-paper img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: cover;
  object-position: center 55%;
  border: 1px solid #6b4b31;
  opacity: .9;
  filter: saturate(.74);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
}

.scroll-roller {
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(50% - var(--roller-width) / 2);
  width: var(--roller-width);
  border: 1px solid #715033;
  border-radius: 7px;
  background:
    url("assets/ink-grain.svg") 0 0 / 200px,
    linear-gradient(90deg, #49311d, #ad8860 16%, #e5caa2 40%, #ae875d 76%, #47311e);
  box-shadow: 0 10px 20px #0008;
  transition: left var(--unroll-time) var(--unroll-ease);
}

.scroll-roller--left { left: calc(50% - var(--roller-width) + 1px); }
.scroll-roller--right { left: calc(50% - 1px); }
.scroll-roller::before,
.scroll-roller::after {
  content: "";
  position: absolute;
  right: -12%;
  left: -12%;
  height: 9px;
  border: 1px solid #231511;
  border-radius: 4px;
  background: linear-gradient(#805d41, #3b271b 72%, #251713);
}
.scroll-roller::before { top: -5px; }
.scroll-roller::after { bottom: -5px; }

.scroll-binding {
  position: absolute;
  top: 65%;
  left: 50%;
  width: calc(var(--roller-width) * 2.18);
  height: 12px;
  transform: translateX(-50%) rotate(-4deg);
  border-radius: 11px;
  background: repeating-linear-gradient(173deg, #65312e 0 2px, #a04c43 3px, #7a3431 4px);
  box-shadow: 0 3px 6px #2c150db5;
}

.scroll-label {
  position: absolute;
  top: 13%;
  left: 50%;
  transform: translateX(-50%);
  writing-mode: vertical-rl;
  padding: 10px 6px;
  border: 1px solid #7d573c;
  background: #e5c99b;
  color: #302118;
  font: 700 clamp(20px, 4.5vw, 30px)/1 "Noto Serif KR", "Batang", serif;
  letter-spacing: .13em;
  box-shadow: 0 2px 5px #54341e63;
}

.scroll-prompt {
  padding: 6px 4px 9px;
  border-bottom: 1px solid #ad8465;
  font-size: 14px;
  letter-spacing: .035em;
}
.scroll-prompt span { margin-left: 12px; color: #d8a984; }
.scroll-trigger:hover .scroll-prompt { color: #ffffff; }
.scroll-trigger:focus-visible { outline: none; }
.scroll-trigger:focus-visible .scroll-prompt { outline: 2px solid #d8a984; outline-offset: 6px; }
.scroll-binding,.scroll-label,.scroll-prompt { transition: opacity 170ms ease; }

.scroll-intro.is-opening .scroll-paper { clip-path: inset(0); }
.scroll-intro.is-opening .scroll-roller--left { left: 0; }
.scroll-intro.is-opening .scroll-roller--right { left: calc(100% - var(--roller-width)); }
.scroll-intro.is-opening .scroll-binding,
.scroll-intro.is-opening .scroll-label,
.scroll-intro.is-opening .scroll-prompt { opacity: 0; }

html:has(.scroll-intro[open]) { overflow: hidden; }

/* The illustrated entrance and the archive share the same title asset. */
.home-left { background: #141923; color: #f5ecdd; }
.home-ink { filter: invert(1); opacity: .08; }
.home-rule { color: #bdb0a0; }
.home-headline { width: min(100%, 600px); margin-left: 0; }
.home-headline h1 { margin: 0 0 clamp(12px, 3vh, 28px); }
.home-logo { width: 100%; height: auto; }
.home-headline p { padding-left: 4px; }
.home-story-link { background: #252b37; }
.home-panorama { filter: saturate(.88) contrast(1.04) brightness(.8); }
.class-placement { color: var(--muted); font-size: 14px; line-height: 1.75; margin-top: 20px; }
.house-portrait-frame:after { pointer-events: none; }
#house-representative {
  position: absolute;
  z-index: 6;
  bottom: 9%;
  left: 7%;
  border: 0;
  border-bottom: 1px solid #fff8;
  padding: 0 0 5px;
  color: white;
  background: transparent;
  font-size: clamp(21px, 2.8vw, 47px);
  font-weight: 900;
  text-align: left;
}
#house-representative::after { content: " ↗"; color: #ff8295; font-size: .65em; }

@media (min-width: 781px) and (max-height: 680px) {
  .quick-nav { overflow-y: auto; justify-content: safe center; }
  .quick-nav::before { display: none; }
  .quick-nav button { min-height: 73px; flex-shrink: 0; }
}

@media (max-width: 780px) {
  .quick-nav { height: calc(62px + env(safe-area-inset-bottom)); padding-bottom: env(safe-area-inset-bottom); }
  .view { padding-bottom: calc(70px + env(safe-area-inset-bottom)); }
  .home-left { padding: calc(var(--header) + 67px) 24px 32px; min-height: 0; }
  .home-logo { max-width: 520px; margin-inline: auto; }
  .home-rule { top: calc(var(--header) + 18px); }
  .home-right { height: 58svh; min-height: 335px; }
  .entrance-choices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); height: auto; }
  .entrance-choices button { min-height: 80px; border-bottom: 1px solid #ffffff46; padding: 10px 12px; }
  .entrance-choices button:nth-child(even) { border-right: 0; }
  .choice-no { display: none; }
  .entrance-choices strong { font-size: 15px; }
  .entrance-choices small { font-size: 11px; }
  .people-image { scroll-margin-top: var(--header); }
  .people-categories button, .place-categories button { min-height: 34px; }
}

@media (max-width: 460px) {
  .scroll-trigger { padding: 5px; }
  .scroll-stage { width: min(88vw, 420px); }
  .home-left { padding-inline: 18px; }
  .home-headline p { font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-intro *, .scroll-intro, .scroll-intro::backdrop { transition: none; }
}