:root {
  --sand-50: #fff8ed;
  --sand-100: #f7ecdb;
  --sand-200: #ebd6b2;
  --paper: rgba(255, 252, 245, 0.88);
  --paper-strong: #fffdf8;
  --ink-900: #1e2d31;
  --ink-700: #476168;
  --ink-500: #698289;
  --lagoon: #1f7174;
  --lagoon-deep: #124c56;
  --coral: #d46c4e;
  --gold: #b88a2e;
  --leaf: #587b4f;
  --line: rgba(31, 113, 116, 0.16);
  --shadow: 0 20px 50px rgba(44, 55, 65, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max-width: 1240px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Gill Sans", "Segoe UI", sans-serif;
  color: var(--ink-900);
  background:
    radial-gradient(circle at top left, rgba(212, 108, 78, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(31, 113, 116, 0.14), transparent 32%),
    linear-gradient(180deg, #fff8ef 0%, #f8f0e2 42%, #f7f3ea 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.25) 1px, transparent 1px);
  background-size: 120px 120px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.2), transparent 80%);
}

a {
  color: inherit;
}

code {
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 0.95em;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  background: var(--lagoon-deep);
  color: white;
  padding: 12px 18px;
  border-radius: 999px;
  text-decoration: none;
  z-index: 10;
}

.skip-link:focus {
  top: 16px;
}

.site-frame {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 22px auto 40px;
}

.site-top {
  position: sticky;
  top: 14px;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px;
  background: rgba(255, 253, 248, 0.85);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.site-brand__mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--lagoon) 0%, var(--coral) 100%);
  color: white;
  font-family: "Palatino Linotype", "Book Antiqua", Georgia, serif;
  font-size: 1.5rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.site-brand__name,
.site-brand__meta {
  margin: 0;
}

.site-brand__name {
  font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  font-size: 1.45rem;
}

.site-brand__meta {
  color: var(--ink-700);
  max-width: 42ch;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.site-nav__link {
  padding: 10px 16px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-700);
  border: 1px solid transparent;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(31, 113, 116, 0.28);
  background: rgba(31, 113, 116, 0.08);
}

.site-nav__link.is-active {
  background: linear-gradient(135deg, rgba(31, 113, 116, 0.14), rgba(212, 108, 78, 0.14));
  border-color: rgba(31, 113, 116, 0.2);
  color: var(--ink-900);
}

.site-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.content-column {
  display: grid;
  gap: 24px;
}

.context-rail {
  position: sticky;
  top: 116px;
  align-self: start;
  display: grid;
  gap: 16px;
}

.rail-card,
.hero-panel,
.section-panel,
.callout,
.skill-card,
.step-card,
.command-card,
.mini-panel {
  background: var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
}

.rail-card,
.section-panel,
.callout,
.skill-card,
.step-card,
.command-card,
.mini-panel {
  border-radius: var(--radius-lg);
}

.rail-card {
  padding: 18px;
}

.rail-card--stack {
  display: grid;
  gap: 12px;
}

.rail-stat {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(31, 113, 116, 0.1);
}

.rail-stat__label {
  display: block;
  margin-bottom: 4px;
  color: var(--ink-500);
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.rail-note {
  margin: 0;
  color: var(--ink-700);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 42px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at top right, rgba(31, 113, 116, 0.18), transparent 28%),
    radial-gradient(circle at bottom left, rgba(212, 108, 78, 0.16), transparent 24%),
    linear-gradient(135deg, rgba(255, 251, 245, 0.96), rgba(248, 241, 229, 0.96));
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: auto -40px -60px auto;
  width: 220px;
  height: 220px;
  border-radius: 46% 54% 60% 40%;
  background: linear-gradient(135deg, rgba(31, 113, 116, 0.18), rgba(212, 108, 78, 0.2));
  filter: blur(2px);
}

.hero-panel h1,
.section-heading h2,
.callout h2,
.skill-card h3,
.step-card h3,
.mini-panel h3 {
  font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  letter-spacing: -0.02em;
}

.hero-panel h1 {
  position: relative;
  z-index: 1;
  margin: 0 0 18px;
  max-width: 12ch;
  font-size: clamp(2.4rem, 4vw, 4.6rem);
  line-height: 0.96;
}

.hero-lede {
  position: relative;
  z-index: 1;
  max-width: 58ch;
  margin: 0;
  color: var(--ink-700);
  font-size: 1.12rem;
  line-height: 1.75;
}

.hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.hero-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 999px;
  text-decoration: none;
  background: var(--lagoon);
  color: white;
}

.hero-actions a.secondary {
  background: rgba(255, 255, 255, 0.66);
  color: var(--ink-900);
  border: 1px solid rgba(31, 113, 116, 0.18);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--ink-500);
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.badge-row {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.badge {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(31, 113, 116, 0.12);
  color: var(--ink-700);
}

.section-panel,
.callout {
  padding: 28px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.section-heading h2,
.callout h2 {
  margin: 0;
  font-size: clamp(1.55rem, 2vw, 2.2rem);
}

.panel-grid,
.mini-grid,
.page-grid,
.prompt-grid,
.command-grid,
.step-grid,
.skill-grid {
  display: grid;
  gap: 16px;
}

.panel-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mini-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.page-grid,
.prompt-grid,
.command-grid,
.step-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.skill-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mini-panel,
.page-card,
.prompt-card,
.skill-card,
.command-card,
.step-card {
  padding: 20px;
}

.mini-panel p:last-child,
.command-card p:last-child,
.callout__body > :last-child {
  margin-bottom: 0;
}

.mini-panel h3,
.page-card h3,
.prompt-card h3,
.skill-card h3,
.step-card h3 {
  margin: 0 0 10px;
  font-size: 1.35rem;
}

.step-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
}

.step-card__index {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(31, 113, 116, 0.12), rgba(212, 108, 78, 0.18));
  font-weight: 700;
}

.mini-list {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--ink-700);
}

.mini-list li + li {
  margin-top: 8px;
}

.callout--lagoon {
  background: linear-gradient(135deg, rgba(31, 113, 116, 0.14), rgba(255, 255, 255, 0.88));
}

.callout--coral {
  background: linear-gradient(135deg, rgba(212, 108, 78, 0.14), rgba(255, 255, 255, 0.88));
}

.callout--gold {
  background: linear-gradient(135deg, rgba(184, 138, 46, 0.16), rgba(255, 255, 255, 0.88));
}

.skill-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-card,
.prompt-card {
  border-radius: var(--radius-lg);
  background: rgba(255, 253, 248, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
}

.page-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.text-link {
  margin-top: auto;
  color: var(--lagoon-deep);
  text-decoration: none;
  font-weight: 600;
}

.text-link:hover,
.text-link:focus-visible {
  text-decoration: underline;
}

.prompt-card {
  display: grid;
  gap: 14px;
}

.prompt-card__top {
  display: grid;
  gap: 4px;
}

.prompt-card pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  white-space: pre-wrap;
  border-radius: var(--radius-md);
  background: rgba(31, 113, 116, 0.08);
  border: 1px solid rgba(31, 113, 116, 0.12);
  color: var(--ink-900);
  font-family: "Cascadia Code", Consolas, monospace;
  line-height: 1.6;
}

.skill-card__top {
  display: grid;
  gap: 4px;
}

.skill-card__caution {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--ink-500);
  font-size: 0.96rem;
}

.command-card code {
  display: inline-flex;
  align-self: start;
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(31, 113, 116, 0.1);
  color: var(--lagoon-deep);
}

.timeline-list {
  position: relative;
  display: grid;
  gap: 16px;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 108px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, rgba(31, 113, 116, 0.28), rgba(212, 108, 78, 0.16));
}

.timeline-card {
  position: relative;
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.timeline-card::before {
  content: "";
  position: absolute;
  left: 101px;
  top: 10px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lagoon), var(--coral));
  border: 3px solid rgba(255, 253, 248, 0.95);
  box-shadow: 0 0 0 4px rgba(31, 113, 116, 0.08);
}

.timeline-card__date {
  margin: 0;
  color: var(--ink-500);
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.timeline-card__body {
  padding: 18px 20px 18px 30px;
  border-radius: var(--radius-lg);
  background: rgba(255, 253, 248, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
}

.timeline-card__body h3 {
  margin: 0 0 8px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border-radius: var(--radius-md);
  border: 1px solid rgba(31, 113, 116, 0.14);
  background: rgba(255, 255, 255, 0.62);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 20px;
  font-weight: 700;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--lagoon-deep);
}

.faq-item[open] summary::after {
  content: "–";
}

.faq-item__body {
  padding: 0 20px 18px;
  color: var(--ink-700);
}

.link-list,
.example-list {
  margin: 0;
  padding-left: 20px;
  color: var(--ink-700);
}

.path-list,
.ordered-doc-list {
  margin: 0;
  padding-left: 22px;
  color: var(--ink-700);
}

.path-list li + li,
.ordered-doc-list li + li {
  margin-top: 10px;
}

.doc-code {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  white-space: pre-wrap;
  border-radius: var(--radius-md);
  background: rgba(31, 113, 116, 0.08);
  border: 1px solid rgba(31, 113, 116, 0.12);
  color: var(--ink-900);
  font-family: "Cascadia Code", Consolas, monospace;
  line-height: 1.6;
}

.doc-code code {
  font-size: 0.92rem;
}

.link-list li + li,
.example-list li + li {
  margin-top: 12px;
}

.link-list a {
  color: var(--lagoon-deep);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 24px;
  padding: 20px 24px 0;
  color: var(--ink-500);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.footer-link {
  padding: 8px 12px;
  border-radius: 999px;
  text-decoration: none;
  background: rgba(31, 113, 116, 0.08);
  color: var(--ink-700);
}

.reveal {
  animation: riseIn 620ms ease both;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1080px) {
  .site-layout {
    grid-template-columns: 1fr;
  }

  .context-rail {
    position: static;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-frame {
    width: min(calc(100% - 18px), var(--max-width));
    margin-top: 10px;
  }

  .site-top {
    position: static;
    padding: 18px;
    border-radius: 22px;
  }

  .site-brand {
    align-items: flex-start;
    flex-direction: column;
  }

  .context-rail,
  .panel-grid,
  .mini-grid,
  .page-grid,
  .prompt-grid,
  .skill-grid,
  .step-grid,
  .command-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel,
  .section-panel,
  .callout {
    padding: 22px;
  }

  .hero-panel h1 {
    max-width: none;
    font-size: 2.65rem;
  }

  .site-footer {
    flex-direction: column;
    padding: 14px 8px 0;
  }

  .footer-links {
    justify-content: flex-start;
  }

  .timeline-list::before {
    left: 18px;
  }

  .timeline-card {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .timeline-card::before {
    left: 10px;
    top: 42px;
  }

  .timeline-card__body {
    padding-left: 26px;
  }
}