/* MongoShard Variant B — Broadsheet Technical Journal (#f4f7f5, #0f1f17, #15803d) */
:root {
  --mgs-bg: #f4f7f5;
  --mgs-surface: #ffffff;
  --mgs-subtle: #ebf1ed;
  --mgs-ink: #0f1f17;
  --mgs-muted: #3d5649;
  --mgs-accent: #15803d;
  --mgs-accent-dark: #14532d;
  --mgs-accent-soft: #ecfdf3;
  --mgs-border: #c2d4c9;
  --mgs-rule: #0f1f17;
  --mgs-warn-bg: #fffbeb;
  --mgs-warn-ink: #78350f;
  --mgs-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --mgs-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mgs-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

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

html {
  background: var(--mgs-bg);
  color: var(--mgs-ink);
  font-family: var(--mgs-serif);
  font-size: 17px;
  line-height: 1.65;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background: var(--mgs-bg);
  color: var(--mgs-ink);
}

a {
  color: var(--mgs-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--mgs-accent-dark);
}

/* LF4 Variant B Topbar (<nav class="mgs-topbar"> + <menu class="mgs-links">) */
.mgs-topbar {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.9rem 1.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  border-bottom: 2px solid var(--mgs-rule);
  font-family: var(--mgs-sans);
}

.mgs-brand {
  color: var(--mgs-ink);
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
}

.mgs-brand strong {
  font-family: var(--mgs-serif);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.mgs-brand span {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mgs-muted);
  font-family: var(--mgs-mono);
}

.mgs-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.95rem;
  font-size: 0.88rem;
}

.mgs-links a {
  color: var(--mgs-ink);
  text-decoration: none;
  font-weight: 600;
}

.mgs-links a:hover {
  color: var(--mgs-accent);
  text-decoration: underline;
}

.mgs-lang-switch {
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--mgs-ink);
  border-radius: 3px;
  font-family: var(--mgs-mono);
  font-size: 0.78rem;
  background: var(--mgs-surface);
}

/* Top-of-page Affiliate Disclosure (<aside class="mgs-ftc-notice">) */
.mgs-ftc-notice {
  max-width: 1080px;
  margin: 0.75rem auto 0;
  padding: 0.55rem 1.4rem;
  background: var(--mgs-subtle);
  border-left: 4px solid var(--mgs-accent);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  font-family: var(--mgs-sans);
  font-size: 0.82rem;
  color: var(--mgs-muted);
}

.mgs-ftc-notice p {
  margin: 0;
}

.mgs-ftc-link {
  font-family: var(--mgs-mono);
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}

/* Journal Main & Report Article */
.mgs-journal {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.75rem 1.4rem 3rem;
}

.mgs-report {
  background: var(--mgs-surface);
  border: 1px solid var(--mgs-border);
  box-shadow: 0 2px 10px rgba(15, 31, 23, 0.04);
  padding: 2.3rem 2.5rem;
}

.mgs-doc-head {
  border-bottom: 1px solid var(--mgs-border);
  padding-bottom: 1.35rem;
  margin-bottom: 1.5rem;
}

.mgs-kicker {
  display: block;
  font-family: var(--mgs-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--mgs-accent);
  font-weight: 700;
  margin-bottom: 0.45rem;
}

.mgs-doc-head h1 {
  font-family: var(--mgs-serif);
  font-size: 2.05rem;
  line-height: 1.2;
  margin: 0 0 0.9rem;
  color: var(--mgs-ink);
  letter-spacing: -0.015em;
}

.mgs-doc-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0.55rem 1.2rem;
  margin: 0.9rem 0 1rem;
  padding: 0.75rem 0.95rem;
  background: var(--mgs-bg);
  border: 1px solid var(--mgs-border);
  font-family: var(--mgs-sans);
  font-size: 0.82rem;
}

.mgs-doc-meta dt {
  font-family: var(--mgs-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--mgs-muted);
}

.mgs-doc-meta dd {
  margin: 0.1rem 0 0;
  font-weight: 600;
  color: var(--mgs-ink);
}

.mgs-exec-brief {
  margin: 1.4rem 0 1.8rem;
  padding: 1rem 1.3rem;
  background: var(--mgs-accent-soft);
  border-left: 4px solid var(--mgs-accent);
  font-style: normal;
}

.mgs-exec-brief p {
  margin: 0.35rem 0;
}

.mgs-short-rule {
  font-family: var(--mgs-mono);
  font-size: 0.85rem;
  color: var(--mgs-accent-dark);
  background: var(--mgs-bg);
  padding: 0.45rem 0.75rem;
  border-left: 3px solid var(--mgs-accent);
}

/* Section Typography */
.mgs-report section {
  margin-top: 2.4rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--mgs-border);
}

.mgs-report h2 {
  font-family: var(--mgs-serif);
  font-size: 1.48rem;
  line-height: 1.28;
  margin: 0 0 0.75rem;
  color: var(--mgs-ink);
}

.mgs-report h3 {
  font-family: var(--mgs-sans);
  font-size: 1.05rem;
  line-height: 1.35;
  margin: 1.1rem 0 0.4rem;
  color: var(--mgs-ink);
}

/* WiredTiger Calculator (<section id="sizer" class="mgs-wt-lab">) */
.mgs-wt-lab {
  background: var(--mgs-bg);
  border: 1.5px solid var(--mgs-ink);
  padding: 1.5rem 1.6rem;
}

.mgs-step-ol {
  list-style: none;
  margin: 1.1rem 0 1.4rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
  font-family: var(--mgs-sans);
}

.mgs-step-ol > li {
  background: var(--mgs-surface);
  border: 1px solid var(--mgs-border);
  padding: 0.85rem 0.95rem;
}

.mgs-step-ol fieldset {
  border: 0;
  margin: 0;
  padding: 0;
}

.mgs-step-ol legend {
  font-family: var(--mgs-mono);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--mgs-accent-dark);
  margin-bottom: 0.55rem;
}

.mgs-pill-grid {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mgs-radio-pill {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.36rem 0.55rem;
  border: 1px solid var(--mgs-border);
  border-radius: 3px;
  font-size: 0.82rem;
  cursor: pointer;
  background: var(--mgs-bg);
}

.mgs-radio-pill input[type="radio"] {
  accent-color: var(--mgs-accent);
  margin: 0;
}

/* Readout & Ledger Tables */
.mgs-wt-readout,
.mgs-ledger-table,
.mgs-when-table,
.mgs-gov-meta {
  width: 100%;
  border-collapse: collapse;
  margin: 1.1rem 0 1.35rem;
  font-family: var(--mgs-sans);
  font-size: 0.88rem;
  background: var(--mgs-surface);
}

.mgs-wt-readout th,
.mgs-wt-readout td,
.mgs-ledger-table th,
.mgs-ledger-table td,
.mgs-when-table th,
.mgs-when-table td,
.mgs-gov-meta th,
.mgs-gov-meta td {
  border: 1px solid var(--mgs-border);
  padding: 0.65rem 0.8rem;
  text-align: left;
  vertical-align: top;
}

.mgs-wt-readout thead th,
.mgs-ledger-table thead th,
.mgs-when-table thead th {
  background: var(--mgs-ink);
  color: #ffffff;
  font-family: var(--mgs-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.mgs-wt-readout tbody th,
.mgs-gov-meta tbody th {
  background: var(--mgs-subtle);
  width: 32%;
  font-weight: 700;
}

.mgs-mono-val {
  font-family: var(--mgs-mono);
  font-weight: 700;
  color: var(--mgs-accent-dark);
}

.mgs-cell-sub {
  display: block;
  font-size: 0.78rem;
  color: var(--mgs-muted);
  margin-top: 0.15rem;
}

/* YAML Output Box (<figure class="mgs-yaml-box">) */
.mgs-yaml-box {
  margin: 1.25rem 0;
  border: 1px solid var(--mgs-ink);
  background: #0f1f17;
  color: #e4efe8;
}

.mgs-yaml-box figcaption {
  padding: 0.55rem 0.85rem;
  background: #182e23;
  border-bottom: 1px solid #2d4a3b;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-family: var(--mgs-mono);
  font-size: 0.78rem;
}

.mgs-yaml-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.5rem;
}

.mgs-yaml-menu button {
  background: var(--mgs-accent);
  color: #ffffff;
  border: 0;
  padding: 0.3rem 0.65rem;
  border-radius: 3px;
  font-family: var(--mgs-mono);
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

.mgs-yaml-menu button:hover {
  background: var(--mgs-accent-dark);
}

.mgs-yaml-box pre,
.mgs-code-block {
  margin: 0;
  padding: 0.95rem 1.05rem;
  overflow-x: auto;
  font-family: var(--mgs-mono);
  font-size: 0.8rem;
  line-height: 1.5;
  background: #0f1f17;
  color: #dcfce7;
}

/* Capacity-Matched Node List (<ul class="mgs-node-list">) */
.mgs-node-list {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(265px, 1fr));
  gap: 1rem;
  font-family: var(--mgs-sans);
}

.mgs-node-list > li {
  background: var(--mgs-surface);
  border: 1px solid var(--mgs-border);
  border-top: 3px solid var(--mgs-accent);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.65rem;
}

.mgs-slot-badge {
  display: inline-block;
  font-family: var(--mgs-mono);
  font-size: 0.7rem;
  color: var(--mgs-accent-dark);
  background: var(--mgs-accent-soft);
  padding: 0.15rem 0.45rem;
  font-weight: 700;
}

.mgs-slot-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  margin-top: 0.35rem;
}

.mgs-slot-price {
  font-family: var(--mgs-mono);
  font-weight: 700;
  color: var(--mgs-accent-dark);
  white-space: nowrap;
}

.mgs-cta-link {
  display: inline-block;
  background: var(--mgs-accent);
  color: #ffffff !important;
  text-decoration: none;
  padding: 0.5rem 0.85rem;
  border-radius: 3px;
  font-family: var(--mgs-sans);
  font-size: 0.82rem;
  font-weight: 700;
  text-align: center;
}

.mgs-cta-link:hover {
  background: var(--mgs-accent-dark);
}

.mgs-dl-link {
  display: inline-block;
  border: 1px solid var(--mgs-ink);
  color: var(--mgs-ink) !important;
  background: var(--mgs-surface);
  text-decoration: none;
  padding: 0.48rem 0.8rem;
  border-radius: 3px;
  font-family: var(--mgs-sans);
  font-size: 0.82rem;
  font-weight: 600;
}

/* Axioms & SVG Diagrams */
.mgs-axiom-list {
  padding-left: 1.25rem;
}

.mgs-axiom-list > li {
  margin-bottom: 1rem;
}

.mgs-diagrams {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.2rem;
}

.mgs-diagrams figure,
.mgs-single-diagram {
  margin: 0;
  background: var(--mgs-bg);
  border: 1px solid var(--mgs-border);
  padding: 0.75rem;
}

.mgs-diagrams img,
.mgs-single-diagram img {
  width: 100%;
  height: auto;
  display: block;
}

.mgs-diagrams figcaption,
.mgs-single-diagram figcaption {
  margin-top: 0.55rem;
  font-family: var(--mgs-sans);
  font-size: 0.8rem;
  color: var(--mgs-muted);
}

/* Video Briefing Section */
.mgs-reel-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.4rem;
  align-items: center;
  background: var(--mgs-bg);
  border: 1px solid var(--mgs-border);
  padding: 1.2rem;
}

.mgs-reel-frame video {
  width: 100%;
  max-width: 220px;
  border-radius: 4px;
  border: 1px solid var(--mgs-ink);
  display: block;
  background: #0f1f17;
}

.mgs-reel-kicker {
  display: block;
  font-family: var(--mgs-mono);
  font-size: 0.73rem;
  color: var(--mgs-accent);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.mgs-reel-actions {
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

/* Directory Definition List (<dl class="mgs-catalog-dl">) */
.mgs-catalog-dl {
  margin: 1rem 0 0;
  display: grid;
  gap: 0.85rem;
}

.mgs-catalog-dl > div {
  padding: 0.85rem 1rem;
  background: var(--mgs-bg);
  border-left: 3px solid var(--mgs-accent);
}

.mgs-catalog-dl dt {
  font-family: var(--mgs-sans);
  font-weight: 700;
  font-size: 0.98rem;
}

.mgs-catalog-dl dd {
  margin: 0.25rem 0 0;
  font-size: 0.88rem;
  color: var(--mgs-muted);
}

/* FAQ Details (<details open class="mgs-qa-detail">) */
.mgs-qa-detail {
  border: 1px solid var(--mgs-border);
  background: var(--mgs-bg);
  padding: 0.8rem 1rem;
  margin-bottom: 0.75rem;
}

.mgs-qa-detail summary {
  font-family: var(--mgs-sans);
  font-weight: 700;
  cursor: pointer;
  color: var(--mgs-ink);
}

.mgs-qa-detail p {
  margin: 0.55rem 0 0;
  font-size: 0.92rem;
}

/* Governance Legal Clauses */
.mgs-gov-clauses dt h2 {
  font-size: 1.2rem;
  margin-top: 1.2rem;
}

.mgs-gov-clauses dd {
  margin: 0 0 1rem;
}

/* Colophon Footer */
.mgs-colophon {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.5rem 1.4rem 2.8rem;
  border-top: 2px solid var(--mgs-rule);
  font-family: var(--mgs-sans);
  font-size: 0.83rem;
  color: var(--mgs-muted);
}

.mgs-colophon-nav {
  list-style: none;
  margin: 0 0 0.9rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.mgs-colophon-nav a {
  color: var(--mgs-ink);
  font-weight: 600;
}

@media (max-width: 760px) {
  .mgs-report {
    padding: 1.35rem 1.15rem;
  }
  .mgs-doc-head h1 {
    font-size: 1.55rem;
  }
  .mgs-reel-card {
    grid-template-columns: 1fr;
  }
}