:root {
  /* Barrios theme — johnmbarrios.com / theme-kit */
  --ink: #0f1115;
  --ink-soft: #3f4650;
  --muted: #6b7280;
  --paper: #ffffff;
  --paper-deep: #f8f9fa;
  --paper-2: var(--paper-deep);
  --rule: #e7e9ec;
  --rule-dark: #cfd3d9;
  --border: var(--rule);
  --yale: #00356b;
  --blue: #1d63d8;
  --accent: var(--yale);
  --accent-light: var(--blue);
  --gold: #3d6ea3;
  --gold-soft: #6f9cc9;
  --shadow: 0 18px 50px rgba(15, 17, 21, 0.08);
  --radius: 12px;
  --w-wide: 1080px;
  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(60px + env(safe-area-inset-top, 0px));
}
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15.5px;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: rgba(29, 99, 216, 0.12);
}
::selection { background: rgba(29, 99, 216, 0.14); }
.container { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }
.wrap { max-width: var(--w-wide); margin: 0 auto; padding: 0 1.5rem; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}
.skip-link {
  position: absolute; left: -9999px; top: 0.75rem; z-index: 200;
  padding: 0.5rem 0.85rem; background: var(--accent); color: white;
  border-radius: 999px; font-weight: 600; font-size: 0.85rem; text-decoration: none;
}
.skip-link:focus { left: 1rem; outline: 2px solid var(--gold); outline-offset: 2px; }

.site-alert {
  background: #fff8e6; border-bottom: 1px solid rgba(184, 134, 11, 0.35);
  color: var(--ink); font-size: 0.92rem; padding: 0.85rem 0;
}
.site-alert .container { max-width: 1120px; margin-inline: auto; padding-inline: 1rem; }
.site-alert code { background: white; padding: 0.1rem 0.35rem; border-radius: 4px; font-size: 0.85em; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

.page-bg { display: none; }

.site-header {
  background: var(--yale);
  position: sticky; top: 0; z-index: 100;
  padding-top: env(safe-area-inset-top, 0px);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; height: 60px; flex-wrap: wrap;
}
.wordmark {
  font-family: var(--font-serif); font-size: 1.18rem; font-weight: 600;
  letter-spacing: 0.005em; white-space: nowrap;
}
.wordmark a { color: #fff; text-decoration: none; }
.wordmark a:hover { color: #c8dcf0; }
.site-nav {
  display: flex; gap: 1.5rem; overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.site-nav a {
  font-family: var(--font-sans); font-size: 0.8rem; font-weight: 500;
  letter-spacing: 0.01em; color: rgba(255, 255, 255, 0.72);
  padding: 0.2rem 0; border-bottom: 2px solid transparent;
  white-space: nowrap; text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.site-nav a:hover { color: #fff; }
.site-nav a.active,
.site-nav a[aria-current="page"] {
  color: #fff; font-weight: 600; border-bottom-color: rgba(255, 255, 255, 0.85);
}

.btn:focus-visible, .filter-btn:focus-visible, .install-tab:focus-visible,
.search-wrap input:focus-visible,
.platform-card:focus-visible, .mcp-hero-card:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent-light); outline-offset: 2px;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.65rem 1.15rem; border-radius: 999px;
  font-weight: 600; font-size: 0.92rem; text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
  touch-action: manipulation;
  min-height: 44px;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--yale); color: white; box-shadow: none; border: 1px solid var(--yale); }
.btn-primary:hover { background: var(--blue); border-color: var(--blue); }
.btn-secondary { background: white; color: var(--yale); border: 1px solid var(--rule-dark); box-shadow: none; }
.btn-secondary:hover { color: var(--blue); border-color: var(--blue); background: rgba(29, 99, 216, 0.04); }
.btn-outline-gold {
  background: transparent; color: var(--yale); border: 1.5px solid var(--rule-dark);
  box-shadow: none;
}
.btn-outline-gold:hover { color: var(--blue); border-color: var(--blue); background: rgba(29, 99, 216, 0.04); }
.btn-ghost { border: 1px solid var(--rule-dark); color: var(--ink); padding: 0.45rem 0.9rem; border-radius: 999px; }

.hero {
  padding: 4rem 0 3.25rem;
  background: var(--yale) url("../assets/yale-banner.svg") no-repeat center / cover;
  color: #fff;
}
.hero .hero-grid { position: relative; }
.hero-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 2.5rem; align-items: center;
}
.eyebrow {
  font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.14em;
  font-size: 0.7rem; color: #9dc1e4; font-weight: 500; margin: 0 0 0.85rem;
}
.hero h1 {
  font-family: var(--font-serif); font-size: clamp(2rem, 4vw, 2.85rem);
  line-height: 1.1; margin: 0 0 1rem; font-weight: 560; letter-spacing: -0.015em; color: #fff;
}
.hero-intro {
  font-size: 1rem; color: rgba(255, 255, 255, 0.88); max-width: 38rem; margin: 0 0 0.75rem; line-height: 1.75;
}
.hero .lead {
  font-size: 0.98rem; color: rgba(255, 255, 255, 0.78); max-width: 38rem; margin: 0 0 1.25rem; line-height: 1.75;
}
.lead {
  font-size: 1rem; color: var(--ink-soft); max-width: 38rem; margin: 0 0 1.25rem; line-height: 1.75;
}
.hero .btn-outline-gold {
  color: #fff; border-color: rgba(255, 255, 255, 0.45);
}
.hero .btn-outline-gold:hover {
  background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.7); color: #fff;
}
.hero .btn-secondary {
  background: rgba(255, 255, 255, 0.12); color: #fff; border-color: rgba(255, 255, 255, 0.35);
}
.hero .btn-secondary:hover { background: rgba(255, 255, 255, 0.2); color: #fff; border-color: rgba(255, 255, 255, 0.55); }
.hero .dual-stats dt { color: #fff; }
.hero .dual-stats dd { color: rgba(255, 255, 255, 0.72); }
.hero .dual-stats dd code { color: rgba(255, 255, 255, 0.85); background: rgba(255, 255, 255, 0.12); }
.hero-actions-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 1.25rem 1.75rem;
  margin-bottom: 1.15rem;
}
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.hero-search {
  display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: stretch; max-width: 32rem;
}
.hero-search-field { flex: 1; min-width: 12rem; }
.hero-search-field input { width: 100%; }
.hero-search .btn { flex-shrink: 0; }
.stats { display: flex; gap: 2rem; margin: 0; }
.stats div { min-width: 4.5rem; }
.stats dt { font-family: var(--font-serif); font-size: 2rem; font-weight: 600; color: var(--yale); margin: 0; }
.stats dd { margin: 0; font-size: 0.85rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.06em; }

.terminal {
  background: #111827; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
.terminal-bar { display: flex; gap: 0.4rem; padding: 0.75rem 1rem; background: #0b1220; }
.terminal-bar span { width: 10px; height: 10px; border-radius: 50%; background: #374151; }
.terminal pre { margin: 0; padding: 1.25rem; overflow-x: auto; }
.terminal code { font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.55; color: #e5e7eb; }
.t-muted { color: #6b7280; }
.t-cmd { color: #93c5fd; }
.t-str { color: #fcd34d; }

section h2 {
  font-family: var(--font-serif); font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 0.5rem;
}
.section-intro { color: var(--ink-soft); margin: 0 0 1.75rem; max-width: 42rem; }

.featured { padding: 1rem 0 3rem; }
.featured-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem;
}
.feature-card,
.skill-card {
  background: white; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.1rem 1.15rem 0.95rem; display: flex; flex-direction: column; gap: 0.55rem;
  position: relative; color: inherit;
  transition: box-shadow 0.22s, border-color 0.22s, transform 0.22s, background 0.22s;
}
.feature-card { padding: 1.15rem 1.15rem 0.95rem; }
.feature-card:hover,
.skill-card:hover,
.skill-card-interactive.is-expandable:focus-within {
  box-shadow: 0 20px 44px rgba(26, 35, 50, 0.12);
  border-color: rgba(30, 77, 107, 0.28);
  transform: translateY(-2px);
}
.feature-card h3 { margin: 0; font-size: 1.05rem; color: var(--accent); }
.skill-card-body { flex: 1; min-height: 0; }
.skill-card-desc {
  margin: 0; font-size: 0.86rem; color: var(--ink-soft); line-height: 1.5;
  position: relative;
}
.feature-card .skill-card-desc { font-size: 0.88rem; }
.skill-card-detail {
  display: none; margin: 0.55rem 0 0; font-size: 0.8rem; line-height: 1.5;
  color: var(--ink-soft); opacity: 0.92;
}
.skill-card-desc.is-clamped {
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2;
  overflow: hidden;
}
.skill-card-desc.is-clamped::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1.4em;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), white 85%);
  pointer-events: none;
}
.skill-card--econometrics { border-left: 3px solid var(--accent); }
.skill-card--data-and-visualization { border-left: 3px solid var(--accent-light); }
.skill-card--research-tools { border-left: 3px solid var(--gold); }
.skill-card--writing-and-review { border-left: 3px solid #8a949e; }
.feature-card.skill-card--econometrics { border-left-width: 3px; border-left-color: var(--accent); }
.feature-card.skill-card--data-and-visualization { border-left-color: var(--accent-light); }
.feature-card.skill-card--research-tools { border-left-color: var(--gold); }
.feature-card.skill-card--writing-and-review { border-left-color: #8a949e; }
.skill-card-footer {
  margin-top: auto; padding-top: 0.55rem; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; gap: 0.5rem;
}
.skill-card-more {
  display: none; border: 1px solid var(--border); background: white;
  color: var(--accent-light); font: inherit; font-size: 0.78rem; font-weight: 600;
  padding: 0.35rem 0.65rem; border-radius: 8px; cursor: pointer; min-height: 36px;
}
.skill-card-more:hover { background: var(--paper-2); }
.skill-card-more:focus-visible { outline: 2px solid var(--accent-light); outline-offset: 2px; }
@media (hover: none) {
  .skill-card-interactive.is-expandable .skill-card-more { display: inline-flex; align-items: center; }
}
.skill-card-interactive.is-expanded .skill-card-desc.is-clamped {
  display: block; -webkit-line-clamp: unset; overflow: visible;
}
.skill-card-interactive.is-expanded .skill-card-desc.is-clamped::after { display: none; }
.skill-card-interactive.is-expanded .skill-card-detail { display: block; }
.skill-card-download {
  font-size: 0.82rem; font-weight: 600; color: var(--accent-light);
  text-decoration: none; padding: 0.35rem 0.55rem; border-radius: 8px;
  min-height: 36px; display: inline-flex; align-items: center; margin-left: auto;
}
.skill-card-download:hover { text-decoration: underline; background: rgba(30, 77, 107, 0.06); }
.skill-card-download:focus-visible {
  outline: 2px solid var(--accent-light); outline-offset: 2px;
}
@media (hover: hover) and (pointer: fine) {
  .skill-card-interactive.is-expandable:hover .skill-card-desc.is-clamped,
  .skill-card-interactive.is-expandable:focus-within .skill-card-desc.is-clamped {
    display: block; -webkit-line-clamp: unset; overflow: visible;
  }
  .skill-card-interactive.is-expandable:hover .skill-card-desc.is-clamped::after,
  .skill-card-interactive.is-expandable:focus-within .skill-card-desc.is-clamped::after {
    display: none;
  }
  .skill-card-interactive.is-expandable:hover .skill-card-detail,
  .skill-card-interactive.is-expandable:focus-within .skill-card-detail {
    display: block;
  }
  .skill-card-interactive.is-expandable:hover,
  .skill-card-interactive.is-expandable:focus-within {
    z-index: 2;
  }
}

.browse { padding: 2rem 0 4rem; }
.browse-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 1.5rem; flex-wrap: wrap; margin-bottom: 1.25rem;
}
.search-wrap input {
  width: min(360px, 100%); padding: 0.75rem 1rem 0.75rem 2.5rem;
  border: 1px solid var(--border); border-radius: 999px; background: white url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%234a5568' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85zm-5.242 1.006a5.5 5.5 0 1 1 0-11 5.5 5.5 0 0 1 0 11z'/%3E%3C/svg%3E") no-repeat 0.9rem center;
  font: inherit;
}
.search-wrap input:focus { outline: 2px solid rgba(30, 77, 107, 0.25); border-color: var(--accent-light); }

.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.filter-btn {
  border: 1px solid var(--border); background: white; color: var(--ink-soft);
  padding: 0.55rem 1rem; border-radius: 999px; cursor: pointer;
  font: inherit; font-size: 0.85rem; font-weight: 500;
  transition: all 0.15s;
  min-height: 44px;
  touch-action: manipulation;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--accent); color: white; border-color: var(--accent);
}
.results-meta { font-size: 0.88rem; color: var(--ink-soft); margin: 0 0 1rem; min-height: 1.25rem; }

.skill-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem;
}
.skill-category-heading {
  grid-column: 1 / -1; margin: 1.25rem 0 0.15rem; padding-top: 1.15rem;
  border-top: 1px solid var(--border);
}
.skill-category-heading:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.skill-category-heading h3 {
  margin: 0 0 0.2rem; font-family: var(--font-serif); font-size: 1.2rem; color: var(--ink);
}
.skill-category-heading p {
  margin: 0; font-size: 0.86rem; color: var(--ink-soft);
}
.skill-category-heading--econometrics h3 { color: var(--accent); }
.skill-category-heading--data-and-visualization h3 { color: var(--accent-light); }
.skill-category-heading--research-tools h3 { color: #8a6508; }
.skill-category-heading--writing-and-review h3 { color: var(--ink-soft); }
.skill-card { animation: fadeUp 0.35s ease both; }
.skill-card-interactive:focus { outline: none; }
.skill-card-interactive:focus-visible {
  outline: 2px solid var(--accent-light); outline-offset: 2px;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.skill-card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.5rem; }
.category-tag {
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem; border-radius: 999px; background: var(--paper-2);
  color: var(--ink-soft); white-space: nowrap;
}
.category-tag--econometrics { background: rgba(0, 53, 107, 0.08); color: var(--yale); }
.category-tag--data-and-visualization { background: rgba(29, 99, 216, 0.08); color: var(--blue); }
.category-tag--research-tools { background: rgba(61, 110, 163, 0.12); color: #3d6ea3; }
.category-tag--writing-and-review { background: rgba(15, 17, 21, 0.06); color: var(--ink-soft); }
.empty-state {
  grid-column: 1 / -1; background: white; border: 1px dashed var(--border);
  border-radius: var(--radius); padding: 2.25rem 1.5rem; text-align: center;
}
.empty-state-icon {
  font-size: 2rem; color: var(--accent-light); opacity: 0.55; margin-bottom: 0.65rem;
  line-height: 1;
}
.empty-state p { margin: 0; color: var(--ink-soft); font-size: 0.92rem; }
.empty-state p + p { margin-top: 0.35rem; font-size: 0.85rem; }
.empty-state strong { color: var(--ink); }

.install { padding: 3rem 0 4.5rem; background: var(--paper-2); border-block: 1px solid var(--border); }
.section-label-skills,
.section-label-mcp,
.section-label-install {
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase; margin: 0 0 0.35rem;
}
.section-label-skills { color: var(--yale); }
.section-label-mcp { color: var(--blue); }
.section-label-install { color: var(--muted); }
.install-tabs {
  display: inline-flex; gap: 0.35rem; margin-bottom: 1.25rem;
  padding: 0.3rem; background: white; border: 1px solid var(--border);
  border-radius: 999px;
}
.install-tab {
  border: none; background: transparent; color: var(--ink-soft);
  padding: 0.55rem 1.15rem; border-radius: 999px; cursor: pointer;
  font: inherit; font-size: 0.88rem; font-weight: 600; min-height: 44px;
  touch-action: manipulation; transition: background 0.15s, color 0.15s;
}
.install-tab:hover { color: var(--ink); }
.install-tab.active { background: var(--yale); color: white; }
.install-tab.active[data-panel="mcp"] { background: var(--blue); }
.install-panel[hidden] { display: none !important; }
.install-panel-note {
  margin: 0 0 1rem; font-size: 0.92rem; color: var(--ink-soft); max-width: 42rem;
}
.step-num--mcp { background: var(--blue); }
.steps {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; margin-bottom: 1.5rem;
}
.step-card {
  background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem;
}
.step-num {
  display: inline-grid; place-items: center; width: 28px; height: 28px;
  border-radius: 50%; background: var(--accent); color: white; font-weight: 700; font-size: 0.85rem;
  margin-bottom: 0.65rem;
}
.step-card h3 { margin: 0 0 0.5rem; font-size: 1rem; }
.step-card p { margin: 0; color: var(--ink-soft); font-size: 0.9rem; }
.step-card pre {
  margin: 0; padding: 0.75rem; background: #111827; color: #e5e7eb;
  border-radius: 10px; overflow-x: auto; font-size: 0.75rem;
}
.platform-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0.75rem; }
.platform-card {
  background: white; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem; text-decoration: none; color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.platform-card:hover { border-color: var(--accent-light); box-shadow: 0 6px 20px rgba(26, 35, 50, 0.06); transform: translateY(-1px); }
.platform-card h4 { margin: 0 0 0.35rem; color: var(--accent); }
.platform-card p { margin: 0; font-size: 0.82rem; color: var(--ink-soft); }

.site-footer {
  padding: 2.2rem 0 calc(2.6rem + env(safe-area-inset-bottom, 0px));
  background: var(--yale);
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; flex-wrap: wrap; font-size: 0.78rem; color: rgba(255, 255, 255, 0.65);
}
.footer-inner code { color: rgba(255, 255, 255, 0.85); background: rgba(255, 255, 255, 0.1); padding: 0.1rem 0.35rem; border-radius: 4px; }
.footer-links { display: flex; gap: 1rem; flex-wrap: wrap; }
.footer-links a { color: rgba(255, 255, 255, 0.85); text-decoration: none; }
.footer-links a:hover { color: #fff; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  /* Copy stays first when the grid collapses: the headline and the pitch
     should land before the install snippet, not below it. */
  .dual-stats { gap: 1.5rem; }
  .hero-actions-row { flex-direction: column; align-items: stretch; }
  .dual-stats--inline { justify-content: flex-start; }
  .browse-sticky-inner { flex-direction: column; align-items: stretch; }
  .browse-sticky .filters { flex: 1 1 auto; }
  .browse-header { align-items: flex-start; }
  .controls { width: 100%; }
  .search-wrap { display: block; width: 100%; }
  .search-wrap input { width: 100%; min-width: 0; font-size: 16px; }
  .pillar-header { flex-direction: column; align-items: stretch; }
  .pillar-header .btn { width: 100%; justify-content: center; }
  .hero-actions .btn { flex: 1 1 calc(50% - 0.375rem); min-width: 9.5rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-links { flex-wrap: wrap; gap: 0.75rem 1rem; }
}

@media (max-width: 560px) {
  .site-header .wrap { height: auto; padding-top: 0.9rem; padding-bottom: 0.9rem; }
  .site-nav { gap: 0.5rem 1.1rem; width: 100%; flex-wrap: wrap; overflow: visible; }
}

@media (max-width: 480px) {
  .container { width: calc(100% - 1.25rem); }
  .hero { padding: 2.25rem 0 2rem; }
  .hero h1 { font-size: clamp(1.75rem, 9vw, 2.35rem); }
  .hero-intro, .lead { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { flex: 1 1 auto; width: 100%; }
  .featured-grid, .skill-grid, .mcp-tools-grid { grid-template-columns: 1fr; }
  .skill-card-head { flex-direction: column; align-items: flex-start; gap: 0.35rem; }
  .category-tag { white-space: normal; }
  .dual-stats { flex-direction: column; gap: 1rem; text-align: left; }
  .dual-stats div { text-align: left; }
  .dual-stats dd { overflow-wrap: anywhere; }
  .step-card pre, .terminal pre, .guide-section pre { font-size: 0.72rem; }
  .compare-band, .install, .browse, .mcp-section { padding-inline: 0; }
  .guide-page { padding-top: 1.75rem; }
  .guide-page .container { width: calc(100% - 1.25rem); }
  .guide-hero h1 { font-size: clamp(1.65rem, 8vw, 2.1rem); }
  .guide-toc { padding: 1rem; }
  .flow-step { flex-direction: column; gap: 0.5rem; }
}


/* Guide / detail pages */
.guide-page { padding: 0 0 4rem; }
.guide-page .container { width: min(780px, calc(100% - 2rem)); }
.guide-back { display: inline-flex; align-items: center; gap: 0.35rem; color: var(--blue); text-decoration: none; font-size: 0.9rem; font-weight: 600; margin-bottom: 1.25rem; }
.guide-back:hover { text-decoration: underline; }
.guide-hero {
  margin: 0 -9999px 2rem; padding: 2.5rem 9999px 2rem;
  background: var(--yale) url("../assets/yale-banner.svg") no-repeat center / cover;
  color: #fff;
}
.guide-hero .eyebrow { color: #9dc1e4; }
.guide-hero h1 { font-family: var(--font-serif); font-size: clamp(2rem, 4vw, 2.75rem); line-height: 1.1; margin: 0 0 0.75rem; color: #fff; font-weight: 560; }
.guide-hero .lead { color: rgba(255, 255, 255, 0.78); font-size: 1.05rem; margin: 0 0 1rem; }
.guide-hero .callout { margin-top: 0; background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.2); color: rgba(255, 255, 255, 0.92); }
.guide-hero .callout strong { color: #fff; }
.guide-hero .callout li { color: rgba(255, 255, 255, 0.82); }
.guide-hero .guide-back { color: rgba(255, 255, 255, 0.85); margin-bottom: 1rem; }
.guide-hero .guide-back:hover { color: #fff; text-decoration: none; }
.guide-section .table-scroll { margin: 1rem 0; }
.guide-section { margin-bottom: 2.5rem; }
.guide-section h2 { font-family: var(--font-serif); font-size: 1.55rem; margin: 0 0 0.75rem; padding-top: 0.5rem; border-top: 1px solid var(--border); }
.guide-section:first-of-type h2 { border-top: none; padding-top: 0; }
.guide-section h3 { font-size: 1.05rem; margin: 1.25rem 0 0.5rem; color: var(--accent); }
.guide-section p, .guide-section li { color: var(--ink-soft); font-size: 0.95rem; }
.guide-section ul, .guide-section ol { padding-left: 1.25rem; }
.guide-section li { margin-bottom: 0.35rem; }
.guide-section pre { margin: 0.75rem 0; padding: 1rem 1.1rem; background: #111827; color: #e5e7eb; border-radius: 10px; overflow-x: auto; font-size: 0.8rem; line-height: 1.5; }
.guide-section code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.85em; }
.guide-section p code, .guide-section li code { background: var(--paper-2); padding: 0.12rem 0.35rem; border-radius: 4px; color: var(--ink); }
.callout { background: white; border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 1rem 1.15rem; margin: 1rem 0; }
.callout ul { margin: 0.5rem 0 0; padding-left: 1.25rem; }
.callout li { color: var(--ink-soft); font-size: 0.92rem; margin-bottom: 0.35rem; }
.callout-warn { border-left-color: var(--gold); }
.callout strong { color: var(--ink); }
.guide-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; margin: 1rem 0; }
.guide-table th, .guide-table td { border: 1px solid var(--border); padding: 0.55rem 0.65rem; text-align: left; vertical-align: top; }
.guide-table th { background: var(--paper-2); color: var(--ink); font-weight: 600; }
.guide-table td { color: var(--ink-soft); }
.guide-toc { background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 1.15rem 1.25rem; margin-bottom: 2rem; }
.guide-toc h2 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 0.65rem; border: none; padding: 0; color: var(--ink-soft); }
.guide-toc ol { margin: 0; padding-left: 1.2rem; }
.guide-toc a { color: var(--accent-light); text-decoration: none; font-size: 0.92rem; }
.guide-toc a:hover { text-decoration: underline; }
.flow-steps { display: grid; gap: 0.75rem; margin: 1rem 0; }
.flow-step { display: flex; gap: 0.85rem; align-items: flex-start; background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 0.85rem 1rem; }
.flow-num { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: white; display: grid; place-items: center; font-weight: 700; font-size: 0.82rem; }

.wrds-promo { background: linear-gradient(135deg, rgba(30,77,107,0.06), rgba(184,134,11,0.08)); border: 1px solid rgba(30,77,107,0.2); border-radius: var(--radius); padding: 1.15rem 1.25rem; transition: box-shadow 0.2s, border-color 0.2s; }
.wrds-promo:hover { box-shadow: var(--shadow); border-color: var(--accent-light); }
.wrds-promo h4 { margin: 0 0 0.35rem; color: var(--accent); }
.wrds-promo p { margin: 0; font-size: 0.9rem; color: var(--ink-soft); }

.split-banner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1.5rem 0 0;
}
.split-card {
  background: white; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
}
.split-card h3 { margin: 0 0 0.4rem; font-size: 1rem; color: var(--accent); }
.split-card p { margin: 0; font-size: 0.88rem; color: var(--ink-soft); }
.split-card.mcp-card { border-color: rgba(184, 134, 11, 0.35); background: linear-gradient(135deg, rgba(184,134,11,0.06), white); }
.mcp-section {
  padding: 3rem 0 4rem;
}
.mcp-section .section-label {
  display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--gold); margin-bottom: 0.5rem;
}
.mcp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; align-items: start; }
.mcp-grid--three { grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.mcp-grid--three .mcp-hero-card h3 { font-size: 1.25rem; }
.mcp-grid--three .mcp-hero-card { margin-bottom: 0; height: 100%; }
@media (max-width: 960px) {
  .mcp-grid--three { grid-template-columns: 1fr; }
}
.mcp-card-large {
  background: white; border: 1px solid rgba(30, 77, 107, 0.2); border-radius: var(--radius);
  padding: 1.35rem 1.4rem; text-decoration: none; color: inherit;
  transition: box-shadow 0.2s, transform 0.2s;
}
.mcp-card-large:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.mcp-card-large h3 { margin: 0 0 0.5rem; color: var(--accent); font-size: 1.15rem; }
.mcp-card-large p { margin: 0 0 0.75rem; font-size: 0.9rem; color: var(--ink-soft); }
.mcp-card-large .mcp-meta { font-size: 0.78rem; color: var(--blue); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.mcp-compare { font-size: 0.92rem; color: var(--ink-soft); }
.mcp-compare table { width: 100%; border-collapse: collapse; margin-top: 0.75rem; font-size: 0.85rem; }
.mcp-compare th, .mcp-compare td { border: 1px solid var(--border); padding: 0.5rem 0.6rem; text-align: left; }
.mcp-compare th { background: white; color: var(--ink); }
@media (max-width: 860px) {
  .split-banner, .mcp-grid { grid-template-columns: 1fr; }
}

.pillar-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.pillar-header h2 { margin: 0; }
.mcp-hero-card {
  display: block; margin-bottom: 1rem;
  background: white; border: 1px solid rgba(30, 77, 107, 0.18); border-radius: var(--radius);
  padding: 1.35rem 1.4rem; text-decoration: none; color: inherit;
  box-shadow: var(--shadow); transition: transform 0.2s, border-color 0.2s;
}
.mcp-hero-card:hover { transform: translateY(-2px); border-color: var(--accent-light); }
.mcp-hero-card h3 { margin: 0 0 0.5rem; font-family: var(--font-serif); font-size: 1.5rem; color: var(--accent); }
.mcp-card-label { margin-bottom: 0.5rem; }
.mcp-hero-card p { margin: 0 0 0.65rem; font-size: 0.92rem; color: var(--ink-soft); }
.mcp-why-list {
  list-style: none; margin: -0.5rem 0 1.5rem; padding: 0;
  display: grid; gap: 0.35rem; max-width: 42rem;
}
.mcp-why-list li { font-size: 0.9rem; color: var(--ink-soft); padding-left: 1rem; position: relative; }
.mcp-why-list li::before { content: "·"; position: absolute; left: 0; color: var(--blue); font-weight: 700; }
.mcp-tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.75rem; margin-top: 1rem; }
.mcp-tools-details {
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 0.85rem 1rem 1rem; background: white;
}
.mcp-tools-details summary {
  cursor: pointer; font-weight: 600; color: var(--accent);
  font-size: 0.92rem; list-style: none;
}
.mcp-tools-details summary::-webkit-details-marker { display: none; }
.mcp-tools-details summary::after { content: " ↓"; font-size: 0.85em; color: var(--ink-soft); }
.mcp-tools-details[open] summary::after { content: " ↑"; }
.mcp-tool-card { background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 0.9rem 1rem; }
.mcp-tool-card strong { display: block; font-size: 0.82rem; color: var(--accent); font-family: ui-monospace, monospace; margin-bottom: 0.25rem; }
.mcp-tool-card span { font-size: 0.8rem; color: var(--ink-soft); }
.compare-band { padding: 2rem 0; border-block: 1px solid var(--border); background: white; }
.compare-band .container { width: min(900px, calc(100% - 2rem)); }
.compare-band-title {
  font-family: var(--font-serif); font-size: 1.35rem; margin: 0 0 1rem; text-align: center;
}
/* Single column by default; two side by side once there is room. Declared
   here rather than in the 860px block above, which sits earlier in the file
   and so was losing to this rule. */
.compare-cards {
  display: grid; grid-template-columns: 1fr; gap: 1rem;
}
@media (min-width: 861px) {
  .compare-cards { grid-template-columns: 1fr 1fr; }
}
.compare-card {
  background: var(--paper); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
}
.compare-card h3 { margin: 0 0 0.45rem; font-size: 1.05rem; color: var(--ink); }
.compare-card p { margin: 0 0 0.65rem; font-size: 0.88rem; color: var(--ink-soft); line-height: 1.5; }
.compare-card ul { margin: 0; padding-left: 1.1rem; font-size: 0.84rem; color: var(--ink-soft); }
.compare-card li { margin-bottom: 0.25rem; }
.compare-card--skills { border-left: 3px solid var(--yale); }
.compare-card--mcp { border-left: 3px solid var(--blue); }
.skills-page-hero {
  padding: 2.5rem 0 1.5rem;
  background: var(--yale) url("../assets/yale-banner.svg") no-repeat center / cover;
  color: #fff;
}
.skills-page-hero h1 {
  font-family: var(--font-serif); font-size: clamp(1.9rem, 3.5vw, 2.5rem);
  margin: 0 0 0.5rem; color: #fff; font-weight: 560;
}
.skills-page-hero .section-intro { margin-bottom: 0; color: rgba(255, 255, 255, 0.78); }
.skills-page-hero .section-label-skills { color: #9dc1e4; }
.skills-page-hero .guide-back { color: rgba(255, 255, 255, 0.85); }
.skills-page-hero .guide-back:hover { color: #fff; }
.browse-sticky {
  position: sticky; top: calc(60px + env(safe-area-inset-top, 0px)); z-index: 90;
  background: rgba(255, 255, 255, 0.96); backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border); padding: 0.65rem 0;
}
.browse-sticky-inner {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.65rem 1rem;
}
.browse-sticky .search-wrap { flex: 1; min-width: 200px; }
.browse-sticky .search-wrap input { width: 100%; }
.browse-sticky .filters { margin: 0; flex: 2 1 320px; }
.browse--catalog { padding-top: 1rem; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-scroll .guide-table { min-width: 520px; }
.dual-stats { display: flex; gap: 2.5rem; margin-top: 1.25rem; }
.dual-stats--inline { margin: 0; gap: 1.75rem; }
.dual-stats--inline div { text-align: left; flex: 0 0 auto; }
.dual-stats div { text-align: center; flex: 1; }
.dual-stats dt { font-family: var(--font-serif); font-size: 2rem; font-weight: 700; margin: 0; }
.dual-stats dt.skills-stat { color: var(--yale); }
.dual-stats dt.mcp-stat { color: var(--blue); }
.dual-stats dd { margin: 0; font-size: 0.78rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.06em; }

/* Links inside the dark hero (e.g. the pipeline guide pointer) */
.hero .lead a, .hero-intro a {
  color: #9dc1e4; font-weight: 600;
  text-decoration: underline; text-underline-offset: 3px;
}
.hero .lead a:hover, .hero .lead a:focus-visible,
.hero-intro a:hover, .hero-intro a:focus-visible { color: #fff; }

/* Narrow screens: the sticky bar stacks vertically, so the base
   flex-basis of .filters (320px) must not become its height. */
@media (max-width: 860px) {
  .browse-sticky .filters { flex: 0 0 auto; }
}