:root {
  --bg: #f5efe4;
  --bg-panel: #fffaf2;
  --bg-panel-strong: #17363b;
  --bg-panel-soft: #efe4d2;
  --line: #d5c4ab;
  --line-strong: #274c53;
  --text: #1f2422;
  --text-soft: #54615c;
  --text-invert: #f7f3ea;
  --accent: #b45a2c;
  --accent-soft: #f1d5bc;
  --shadow: 0 18px 45px rgba(21, 31, 29, 0.08);
  --heading-font: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --body-font: "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
  --mono-font: "SFMono-Regular", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: linear-gradient(180deg, #f1eadf 0%, #f8f4ed 40%, #f3ecdf 100%);
  color: var(--text);
}

body {
  margin: 0;
  font-family: var(--body-font);
  line-height: 1.6;
  color: var(--text);
}

a {
  color: #0f5f78;
}

a:hover {
  color: #0b4659;
}

code,
pre {
  font-family: var(--mono-font);
}

.guide-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(280px, 330px) minmax(0, 1fr);
}

.guide-sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  min-height: 100vh;
  padding: 28px 22px 32px;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.08), transparent 34%),
    linear-gradient(180deg, #1b4349 0%, #14363b 42%, #102a2e 100%);
  color: var(--text-invert);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.guide-brand {
  margin-bottom: 28px;
}

.guide-brand__link {
  display: flex;
  align-items: center;
  gap: 14px;
  color: inherit;
  text-decoration: none;
}

.guide-brand__logo {
  width: 54px;
  height: 54px;
  object-fit: contain;
  background: rgba(255, 250, 242, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 8px;
}

.guide-brand__text {
  display: flex;
  flex-direction: column;
  font-family: var(--heading-font);
  letter-spacing: 0.02em;
}

.guide-brand__text strong {
  font-size: 1.2rem;
}

.guide-brand__summary {
  margin: 14px 0 0;
  color: rgba(247, 243, 234, 0.76);
  font-size: 0.96rem;
}

.guide-nav__group + .guide-nav__group {
  margin-top: 24px;
}

.guide-nav__label {
  margin: 0 0 10px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(247, 243, 234, 0.56);
}

.guide-nav__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.guide-nav__list--compact .guide-nav__summary {
  display: none;
}

.guide-nav__item {
  margin: 0;
}

.guide-nav__link {
  display: block;
  padding: 12px 14px;
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  background: transparent;
  transition: background-color 140ms ease, transform 140ms ease, border-color 140ms ease;
  border: 1px solid transparent;
}

.guide-nav__link:hover {
  background: rgba(255, 250, 242, 0.08);
  border-color: rgba(255, 255, 255, 0.08);
  transform: translateX(2px);
}

.guide-nav__item.is-active .guide-nav__link {
  background: rgba(241, 213, 188, 0.16);
  border-color: rgba(241, 213, 188, 0.28);
}

.guide-nav__title {
  display: block;
  font-weight: 700;
}

.guide-nav__summary {
  display: block;
  margin-top: 3px;
  font-size: 0.88rem;
  color: rgba(247, 243, 234, 0.72);
}

.guide-main {
  padding: 42px clamp(20px, 5vw, 56px) 72px;
}

.guide-page-header {
  max-width: 860px;
  margin: 0 auto 30px;
  padding: 28px 30px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    radial-gradient(circle at top right, rgba(180, 90, 44, 0.12), transparent 30%),
    linear-gradient(180deg, rgba(255, 250, 242, 0.98), rgba(248, 241, 230, 0.96));
  box-shadow: var(--shadow);
}

.guide-kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.guide-title {
  margin: 0;
  font-family: var(--heading-font);
  font-size: clamp(2.25rem, 5vw, 3.7rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.guide-lead {
  margin: 14px 0 0;
  max-width: 46rem;
  font-size: 1.1rem;
  color: var(--text-soft);
}

.guide-content {
  max-width: 860px;
  margin: 0 auto;
}

.guide-content h2,
.guide-content h3,
.guide-content h4 {
  font-family: var(--heading-font);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-top: 2.2rem;
}

.guide-content h2 {
  font-size: 1.8rem;
}

.guide-content h3 {
  font-size: 1.35rem;
}

.guide-content p,
.guide-content li {
  color: var(--text);
}

.guide-content ul,
.guide-content ol {
  padding-left: 1.2rem;
}

.guide-content img {
  max-width: 100%;
  border-radius: 18px;
}

.guide-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  margin: 20px 0 28px;
}

.guide-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 20px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 250, 242, 0.98), rgba(248, 240, 226, 0.98));
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  min-height: 100%;
}

.guide-card:hover {
  transform: translateY(-2px);
  border-color: #b99672;
}

.guide-card__eyebrow {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.guide-card__title {
  font-family: var(--heading-font);
  font-size: 1.35rem;
  line-height: 1.1;
}

.guide-card__body {
  color: var(--text-soft);
}

.guide-card--subtle {
  background: linear-gradient(180deg, rgba(250, 245, 237, 0.94), rgba(241, 229, 212, 0.94));
}

.guide-callout {
  margin: 22px 0;
  padding: 18px 20px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: var(--bg-panel-soft);
}

.guide-callout strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--heading-font);
  font-size: 1.1rem;
}

.guide-meta {
  display: grid;
  gap: 12px;
  margin: 20px 0 28px;
}

.guide-meta__item {
  padding: 15px 18px;
  border-left: 4px solid var(--accent);
  border-radius: 14px;
  background: rgba(239, 228, 210, 0.58);
}

.guide-meta__label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.guide-list-quiet {
  margin: 0;
  padding-left: 1.1rem;
}

.guide-content table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 18px;
  background: var(--bg-panel);
  box-shadow: var(--shadow);
}

.guide-content th,
.guide-content td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.guide-content th {
  background: rgba(23, 54, 59, 0.08);
}

.guide-content pre {
  overflow-x: auto;
  padding: 16px;
  border-radius: 18px;
  background: #1a2224;
  color: #f8f4ed;
}

.guide-content blockquote {
  margin: 18px 0;
  padding: 10px 18px;
  border-left: 4px solid var(--accent);
  background: rgba(241, 213, 188, 0.28);
}

@media (max-width: 960px) {
  .guide-shell {
    grid-template-columns: 1fr;
  }

  .guide-sidebar {
    position: static;
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .guide-main {
    padding-top: 28px;
  }
}