:root {
  --bg: #f7f5ef;
  --paper: #fffef9;
  --ink: #161616;
  --muted: #68645c;
  --line: #242424;
  --button: #ece7db;
  --button-hover: #dfd7c8;
  --max-width: 860px;
  --layout-width: 1212px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 18px;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.35)),
    var(--bg);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.55;
}

button,
input,
textarea {
  font: inherit;
}

.site-header,
.site-layout,
.site-footer {
  width: min(var(--layout-width), calc(100% - 28px));
  margin-inline: auto;
}

.site-header {
  padding: 28px 0 18px;
  text-align: center;
}

.site-name {
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: clamp(2.2rem, 8vw, 4.8rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 0.95;
  text-decoration: none;
}

.site-name:hover {
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-underline-offset: 6px;
}

.item-shell {
  display: grid;
  gap: 18px;
  width: min(var(--max-width), 100%);
  margin-inline: auto;
}

.site-layout {
  position: relative;
}

.side-links {
  position: absolute;
  top: 72px;
  left: calc(50% - (var(--max-width) / 2) - 176px);
  width: 150px;
  display: grid;
  gap: 8px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.92rem;
}

.side-links a {
  display: block;
  padding: 8px 10px;
  border: 2px solid var(--line);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
}

.side-links a:hover,
.side-links a:focus-visible {
  background: var(--button-hover);
}

.item-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.item-nav button {
  min-width: 82px;
  min-height: 42px;
  border: 2px solid var(--line);
  border-radius: 4px;
  background: var(--button);
  color: var(--ink);
  cursor: pointer;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.92rem;
  font-weight: 700;
}

.item-nav button:hover:not(:disabled),
.item-nav button:focus-visible:not(:disabled) {
  background: var(--button-hover);
}

.item-nav button:disabled {
  color: var(--muted);
  cursor: default;
  opacity: 0.55;
}

.item {
  margin: 0;
}

.item-panel {
  min-height: 330px;
  padding: clamp(18px, 5vw, 44px);
  border: 3px solid var(--line);
  border-radius: 3px;
  background: var(--paper);
  box-shadow: 8px 8px 0 #d7d0c0;
}

.item-panel.image-panel {
  display: grid;
  place-items: center;
  padding: 18px;
}

.item-panel img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-shell {
  width: min(680px, calc(100% - 28px));
  margin: 0 auto;
}

.page-panel {
  padding: clamp(22px, 5vw, 42px);
  border: 3px solid var(--line);
  border-radius: 3px;
  background: var(--paper);
  box-shadow: 8px 8px 0 #d7d0c0;
}

.page-panel p {
  margin: 0 0 1em;
}

.page-panel p:last-child {
  margin-bottom: 0;
}

.page-panel a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-panel code {
  font-family: Consolas, Monaco, monospace;
  font-size: 0.9em;
}

.text-panel {
  max-width: 640px;
  margin: 0 auto;
  white-space: pre-wrap;
  font-size: clamp(1.15rem, 2.5vw, 1.65rem);
  line-height: 1.45;
}

.text-panel p {
  margin: 0 0 1em;
}

.text-panel p:last-child {
  margin-bottom: 0;
}

.loading,
.error {
  margin: 0;
  color: var(--muted);
  font-family: Arial, Helvetica, sans-serif;
  text-align: center;
}

.archive {
  max-width: 520px;
  margin: 12px auto 0;
  font-family: Arial, Helvetica, sans-serif;
}

.archive summary {
  cursor: pointer;
  text-align: center;
  font-weight: 700;
}

.archive ol {
  display: grid;
  gap: 7px;
  margin: 14px 0 0;
  padding-left: 28px;
}

.archive a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.archive .current a {
  font-weight: 800;
}

.site-footer {
  padding: 34px 0 24px;
  color: var(--muted);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.86rem;
  text-align: center;
}

.site-footer code {
  color: var(--ink);
}

@media (max-width: 520px) {
  html {
    font-size: 16px;
  }

  .item-nav {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 5px;
  }

  .item-nav button {
    min-width: 0;
    padding-inline: 4px;
    font-size: 0.78rem;
  }

  .item-panel {
    min-height: 260px;
    box-shadow: 5px 5px 0 #d7d0c0;
  }
}

@media (max-width: 1212px) {
  .site-layout {
    display: grid;
    gap: 18px;
  }

  .side-links {
    position: static;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    padding-top: 0;
  }
}