:root {
  --bg: #0b1220;
  --panel: rgba(255, 255, 255, 0.06);
  --panel2: rgba(255, 255, 255, 0.09);
  --text: gold;
  --body: rgba(255, 255, 255, 0.86);
  --muted: rgba(255, 255, 255, 0.68);
  --faint: rgba(255, 255, 255, 0.5);
  --border: rgba(255, 255, 255, 0.12);
  --accent: #ffd166;
  --accent2: #7dd3fc;
  --radius: 18px;
  --max: 1120px;
  --shadow: 0 14px 38px rgba(0, 0, 0, 0.35);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background:
    radial-gradient(
      900px 300px at 85% 0%,
      rgba(255, 209, 102, 0.09),
      transparent
    ),
    radial-gradient(
      900px 360px at 0% 30%,
      rgba(125, 211, 252, 0.08),
      transparent
    ),
    var(--bg);
  color: var(--text);
  font-family: Tahoma, Arial, sans-serif;
  line-height: 1.9;
}
.container {
  max-width: var(--max);
  margin: auto;
  padding: 0 20px;
}
a {
  color: var(--accent);
  text-decoration: none;
}
.sitebar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #0b1a36;
  border-bottom: 1px solid rgba(255, 215, 0, 0.22);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.45);
}
.sitebar .inner {
  height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  color: gold;
}
.brand .logo {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 215, 0, 0.45);
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(255, 209, 102, 0.08);
}
.nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.nav a {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 10px;
  color: rgba(255, 255, 255, 0.78);
}
.nav a:hover {
  border-color: rgba(255, 209, 102, 0.5);
  color: var(--accent);
}
.hero {
  margin: 28px auto 18px;
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 16px;
}
.hero-card,
.side-card,
.section,
.book-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel), rgba(0, 0, 0, 0.11));
  box-shadow: var(--shadow);
  padding: 18px;
}
.badge {
  display: inline-flex;
  border: 1px solid rgba(255, 209, 102, 0.3);
  background: rgba(255, 209, 102, 0.08);
  color: var(--accent);
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 900;
}
.hero h1 {
  font-size: 34px;
  line-height: 1.25;
  margin: 10px 0;
}
.lead {
  color: var(--body);
  font-size: 16px;
  max-width: 75ch;
  margin: 0;
}
.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}
.meta {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.15);
  padding: 10px;
}
.meta span {
  display: block;
  color: var(--faint);
  font-size: 12px;
}
.meta strong {
  display: block;
  color: gold;
  font-size: 14px;
}
.toc {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.toc a {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
}
.toc a:hover {
  color: var(--accent);
  border-color: rgba(255, 209, 102, 0.45);
}
.visual {
  min-height: 100%;
  display: grid;
  place-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.visual:before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px dashed rgba(255, 209, 102, 0.24);
  border-radius: 22px;
}
.book-symbol {
  font-size: 58px;
  filter: drop-shadow(0 12px 24px rgba(0, 0, 0, 0.4));
}
.book-title-small {
  color: var(--muted);
  font-size: 13px;
}
.layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 16px;
  margin-bottom: 26px;
}
.aside {
  position: sticky;
  top: 106px;
  align-self: start;
}
.aside .side-card {
  padding: 14px;
}
.aside h3 {
  margin: 0 0 8px;
}
.aside a {
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.78);
}
.aside a:last-child {
  border-bottom: 0;
}
.section {
  margin-bottom: 14px;
}
.section h2 {
  margin: 0 0 10px;
  font-size: 22px;
}
.section h3 {
  margin: 14px 0 6px;
  color: var(--accent);
}
p {
  color: var(--body);
  margin: 0 0 10px;
}
.note {
  border-inline-start: 4px solid var(--accent);
  background: rgba(255, 209, 102, 0.07);
  border-radius: 14px;
  padding: 12px;
  margin: 12px 0;
  color: var(--body);
}
.danger {
  border-inline-start-color: #fca5a5;
  background: rgba(252, 165, 165, 0.07);
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.book-card {
  padding: 14px;
  display: block;
}
.book-card h3 {
  margin: 4px 0 6px;
  color: gold;
}
.book-card p {
  font-size: 13.5px;
  color: var(--muted);
}
.tag {
  display: inline-flex;
  margin: 4px 3px;
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid rgba(255, 209, 102, 0.25);
  background: rgba(255, 209, 102, 0.07);
  color: var(--accent);
  font-size: 12px;
}
.quote-box {
  border: 1px solid rgba(255, 209, 102, 0.24);
  border-radius: 16px;
  background: rgba(255, 209, 102, 0.06);
  padding: 14px;
  margin: 10px 0;
}
.quote-box blockquote {
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
}
.quote-box small {
  color: var(--faint);
}
ol,
ul {
  color: var(--body);
}
li {
  margin-bottom: 6px;
}
.footer {
  border-top: 1px solid var(--border);
  color: var(--faint);
  padding: 22px 0;
  margin-top: 20px;
}
.soon {
  opacity: 0.62;
  filter: saturate(0.75);
}
.source-list a {
  display: block;
  margin: 6px 0;
}
.author-link {
  font-weight: 900;
  border-bottom: 1px dashed rgba(255, 209, 102, 0.4);
}
@media (max-width: 900px) {
  .hero,
  .layout {
    grid-template-columns: 1fr;
  }
  .aside {
    position: static;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .meta-grid {
    grid-template-columns: 1fr;
  }
  .sitebar .inner {
    height: auto;
    min-height: 76px;
    padding-top: 12px;
    padding-bottom: 12px;
    align-items: flex-start;
    flex-direction: column;
  }
}

.book-card--wide {
  grid-column: span 2;
}
.source-list {
  display: grid;
  gap: 6px;
}
.source-list a {
  color: var(--accent);
}
.community-form {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.16);
  padding: 14px;
  margin-top: 10px;
}
.form-row {
  display: grid;
  gap: 8px;
  margin-bottom: 10px;
}
.input-demo,
.textarea-demo {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.78);
  padding: 10px;
  font-family: inherit;
}
.textarea-demo {
  min-height: 92px;
  resize: vertical;
}
.disabled-btn {
  display: inline-flex;
  border: 1px solid rgba(255, 209, 102, 0.35);
  background: rgba(255, 209, 102, 0.1);
  color: var(--accent);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 900;
}
@media (max-width: 900px) {
  .book-card--wide {
    grid-column: span 1;
  }
}