@charset "UTF-8";

:root {
  --paper: #f5f4ee;
  --ink: #272f27;
  --muted: #626b5d;
  --line: #d4d8cd;
  --green: #36472f;
  --focus: #9d4b2d;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 28px;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.7 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}
::selection {
  background: #d9e0cf;
  color: var(--ink);
}
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 5px;
}
#main:focus {
  outline: none;
}
.wrap {
  width: min(1120px, calc(100% - 96px));
  margin-inline: auto;
}
.skip-link {
  position: fixed;
  z-index: 10;
  top: 12px;
  left: 16px;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-160%);
}
.skip-link:focus {
  transform: none;
}
.site-header {
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}
.brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 1.5px;
  line-height: 1;
}
.cat-logo {
  width: 32px;
  height: 34px;
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 14px;
}
.nav-link:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 6px;
}
.collection-heading {
  padding: 48px 0 32px;
}
.works {
  padding-bottom: 32px;
}
h1 {
  margin: 0;
  font: normal clamp(42px, 4.4vw, 62px) / 1.3 var(--serif);
  letter-spacing: -1px;
}
.work-cover-link {
  display: block;
  overflow: hidden;
  border: 1px solid #4d5e5033;
  background: #a4b7a8;
}
.river-cover {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  image-rendering: pixelated;
}
.work-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  padding: 0 0 28px;
}
.work-description h2 {
  margin: 0;
  font: normal 28px/1.5 var(--serif);
}
.work-description p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 16px;
}
.work-action {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 9px;
}
.enter-button {
  min-height: 48px;
  min-width: 160px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border: 1px solid var(--green);
  padding: 10px 20px;
  color: var(--paper);
  background: var(--green);
  font-size: 15px;
  transition: background 0.15s;
}
.enter-button:hover {
  background: #263821;
}
.enter-button svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}
.device-note {
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}
.experience-info {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  padding: 40px 0 48px;
  border-top: 1px solid var(--line);
}
.experience-info h2 {
  margin: 9px 0 0;
  font-size: 20px;
  font-weight: 500;
}
.experience-topics {
  min-width: 0;
}
details {
  border-bottom: 1px solid var(--line);
}
summary {
  -webkit-tap-highlight-color: transparent;
  min-height: 60px;
  padding: 16px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 16px;
  cursor: pointer;
  list-style: none;
}
summary::-webkit-details-marker {
  display: none;
}
summary:hover {
  color: var(--green);
}
.disclosure-icon {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--muted);
}
.disclosure-icon::before,
.disclosure-icon::after {
  content: "";
  position: absolute;
  background: currentColor;
}
.disclosure-icon::before {
  top: 7px;
  left: 1px;
  width: 14px;
  height: 1.5px;
}
.disclosure-icon::after {
  top: 1px;
  left: 7px;
  width: 1.5px;
  height: 14px;
}
details[open] .disclosure-icon::after {
  display: none;
}
.topic-body {
  padding: 0 30px 20px 4px;
}
.topic-body p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 96px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
.icp-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
}
.icp-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.back-top {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  min-height: 44px;
}
.back-top span {
  font-size: 21px;
}

@media (max-width: 760px) {
  .wrap {
    width: calc(100% - 40px);
  }
  .site-header {
    min-height: 80px;
    gap: 16px;
  }
  .brand {
    font-size: 16px;
    letter-spacing: 1px;
    gap: 8px;
  }
  .cat-logo {
    width: 27px;
    height: 30px;
  }
  .main-nav {
    gap: 16px;
  }
  .collection-heading {
    padding: 32px 0 24px;
  }
  h1 {
    font-size: 42px;
  }
  .work-info {
    gap: 24px;
    padding: 0 0 24px;
  }
  .work-description h2 {
    font-size: 24px;
  }
  .work-description p {
    font-size: 15px;
    margin-top: 8px;
  }
  .enter-button {
    min-width: 144px;
  }
  .experience-info {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 28px 0 36px;
  }
  .experience-info h2 {
    margin: 0;
  }
  .site-footer {
    min-height: 88px;
    padding-block: 16px;
    row-gap: 0;
  }
  .icp-link {
    order: 3;
    flex-basis: 100%;
  }
}

@media (max-width: 520px) {
  .main-nav {
    gap: 12px;
  }
  .work-info {
    flex-direction: column;
    gap: 20px;
  }
  .work-action {
    align-items: flex-start;
  }
  .enter-button {
    min-width: 164px;
  }
  .device-note {
    text-align: left;
  }
  .work-description h2 {
    font-size: 25px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}