:root {
  --bg: #faf9f7;
  --paper: #ffffff;
  --ink: #24201f;
  --muted: #716b68;
  --line: #ded9d4;
  --soft: #f1efeb;
  --accent: #9d3f3f;
  --accent-dark: #6d2929;
  --note: #ebe6dc;
  --shadow: 0 18px 42px rgba(32, 24, 18, .08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(157, 63, 63, .035) 1px, transparent 1px) 0 0 / 72px 72px,
    var(--bg);
  color: var(--ink);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  line-height: 1.8;
  letter-spacing: 0;
}

a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: .18em;
}

button {
  font: inherit;
}

.site-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: end;
  gap: 28px;
  padding: 34px 0 18px;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: inherit;
  text-decoration: none;
}

.brand-title {
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 5vw, 4.4rem);
  line-height: 1;
  font-weight: 400;
}

.brand-subtitle {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: .95rem;
}

.site-nav {
  display: flex;
  justify-content: flex-end;
  gap: 15px;
  flex-wrap: wrap;
  font-family: Georgia, "Times New Roman", serif;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.site-nav a[aria-current="page"] {
  color: var(--accent-dark);
  border-bottom-color: var(--accent);
}

.menu-button {
  display: none;
  border: 1px solid var(--line);
  background: var(--paper);
  width: 42px;
  height: 42px;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 34px;
  padding: 30px 0 86px;
}

.content,
.sidebar section,
.dialogue {
  background: rgba(255, 255, 255, .78);
  border: 1px solid var(--line);
}

.content {
  min-height: 700px;
  padding: clamp(22px, 4vw, 44px);
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.sidebar section {
  padding: 18px;
}

.sidebar h2 {
  margin: 0 0 10px;
  font-size: .9rem;
  color: var(--accent-dark);
  font-weight: 600;
}

.avatar {
  display: block;
  width: 118px;
  aspect-ratio: 1;
  object-fit: cover;
  border: 1px solid var(--ink);
  margin-bottom: 12px;
  filter: grayscale(1);
}

.profile-card h2 {
  color: var(--ink);
  font-size: 1.25rem;
}

.compact-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.compact-list li + li {
  border-top: 1px solid var(--line);
  margin-top: 8px;
  padding-top: 8px;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
}

.tag-row span,
.tag-row button,
.memory-chip {
  border: 1px solid var(--line);
  background: var(--soft);
  color: var(--ink);
  padding: 4px 9px;
  font-size: .85rem;
}

.tag-row button {
  cursor: pointer;
}

.mini-qr button {
  display: block;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.mini-qr img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-title {
  margin: 0 0 8px;
  font-size: clamp(1.7rem, 4vw, 3rem);
  line-height: 1.25;
  font-weight: 400;
}

.page-lead {
  color: var(--muted);
  margin: 0 0 28px;
}

.article-list {
  display: grid;
  gap: 18px;
}

.article-card {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 20px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.article-card:first-child {
  border-top: 0;
  padding-top: 0;
}

.article-card img,
.article-hero,
.photo-grid img {
  width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--soft);
}

.article-card img {
  aspect-ratio: 4 / 3;
}

.article-card time,
.meta {
  color: var(--muted);
  font-size: .86rem;
}

.article-card h2 {
  margin: 4px 0 8px;
  font-size: 1.3rem;
}

.article-card p {
  margin: 0 0 10px;
}

.read-button,
.plain-button {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  border: 1px solid var(--accent);
  background: var(--paper);
  color: var(--accent-dark);
  padding: 6px 13px;
  cursor: pointer;
  text-decoration: none;
}

.read-button:hover,
.plain-button:hover {
  background: #fff3f3;
}

.article-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.article-hero {
  aspect-ratio: 4 / 3;
  margin: 14px 0 20px;
}

.article-body p {
  margin: 0 0 1.05em;
}

.note-box,
.comment-box,
.source-box,
.zip-panel {
  background: var(--soft);
  border: 1px solid var(--line);
  padding: 16px;
  margin: 18px 0;
}

.source-box {
  font-family: Consolas, "Courier New", monospace;
  white-space: pre-wrap;
  font-size: .9rem;
}

.comment-box strong {
  color: var(--accent-dark);
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.photo-grid figure {
  margin: 0;
}

.photo-grid img {
  aspect-ratio: 4 / 3;
}

.photo-grid figcaption {
  font-size: .86rem;
  color: var(--muted);
  margin-top: 8px;
}

.archive-list {
  border-top: 1px solid var(--line);
}

.archive-row {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 18px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 13px 0;
}

.hidden-link {
  opacity: .38;
  font-size: .9rem;
}

.dialogue {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: min(380px, calc(100% - 44px));
  padding: 16px 46px 16px 18px;
  box-shadow: var(--shadow);
}

.dialogue-name {
  color: var(--accent-dark);
  font-weight: 700;
  margin-bottom: 4px;
}

.dialogue p {
  margin: 0;
}

.dialogue-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  background: var(--paper);
  cursor: pointer;
}

body.infected {
  --bg: #f6f4f1;
  --ink: #1e1d1d;
  --accent: #6f2020;
  --accent-dark: #471111;
}

body.infected .brand-subtitle::after {
  content: " / 記憶を復元中です";
  color: var(--accent-dark);
}

body.truth .content {
  box-shadow: inset 0 0 0 1px rgba(109, 41, 41, .16);
}

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .menu-button {
    display: inline-block;
  }

  .site-nav {
    display: none;
    grid-column: 1 / -1;
    justify-content: flex-start;
    padding-top: 16px;
  }

  .site-nav.is-open {
    display: flex;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    order: -1;
  }

  .article-card,
  .archive-row {
    grid-template-columns: 1fr;
  }

  .photo-grid {
    grid-template-columns: 1fr;
  }
}