:root {
  --bc-blue: #003366;
  --bc-blue-deep: #002548;
  --bc-blue-surface: #1a5a96;
  --bc-gold: #fcba19;
  --ink-strong: #1c2733;
  --ink-body: #2f3b4b;
  --ink-soft: #5f6b7a;
  --bg-main: #f2f2f0;
  --bg-card: #ffffff;
  --line: #d6d8dd;
  --shadow-soft: 0 8px 20px rgba(0, 51, 102, 0.07);
  --shadow-strong: 0 16px 32px rgba(0, 37, 72, 0.14);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "BC Sans", "Noto Sans", "Segoe UI", Arial, sans-serif;
  background: var(--bg-main);
  color: var(--ink-body);
  line-height: 1.5;
}

.page-gradient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(900px 280px at 14% -6%, rgba(252, 186, 25, 0.08), transparent 62%),
    linear-gradient(180deg, #f5f5f3 0%, #f0f0ee 58%, #ededea 100%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  border-top: 4px solid var(--bc-gold);
  border-bottom: 1px solid var(--line);
  background: rgba(242, 242, 240, 0.95);
  backdrop-filter: blur(8px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  object-fit: cover;
  box-shadow: 0 4px 10px rgba(0, 51, 102, 0.22);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.brand-gov {
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.brand-title {
  color: var(--bc-blue-deep);
  font-size: 0.96rem;
  font-weight: 700;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.site-nav a {
  color: var(--bc-blue-deep);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.42rem 0.64rem;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(0, 51, 102, 0.08);
  color: var(--bc-blue);
  outline: none;
}

.site-nav a.active {
  background: var(--bc-blue);
  color: #ffffff;
}

main {
  width: min(1440px, calc(100% - 2rem));
  margin: 1.6rem auto 4rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.73rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bc-blue-surface);
  font-weight: 700;
}

h1,
h2,
h3 {
  color: var(--ink-strong);
  line-height: 1.18;
}

h1 {
  margin: 0 0 0.9rem;
  font-size: clamp(1.75rem, 3.8vw, 2.85rem);
}

h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
}

h3 {
  margin: 0 0 0.5rem;
  font-size: 1.03rem;
}

p {
  margin: 0;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  padding: clamp(0.3rem, 1.4vw, 0.9rem) 0;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero-copy p {
  max-width: 62ch;
}

.hero-panel {
  background: linear-gradient(180deg, #173c5f 0%, #0f2a43 100%);
  color: #dce8f4;
  border-radius: 8px;
  padding: 1rem 1rem 1rem 1.2rem;
  box-shadow: 0 8px 18px rgba(0, 37, 72, 0.16);
}

.hero-panel h2 {
  color: #ffffff;
  font-size: 1.15rem;
  margin: 0 0 0.7rem;
}

.hero-panel ul {
  margin: 0;
  padding: 0 0 0 1rem;
  display: grid;
  gap: 0.52rem;
}

.hero-simple {
  grid-template-columns: minmax(280px, 0.95fr) minmax(320px, 1.05fr);
  align-items: start;
  gap: 2rem;
  padding: 45px 0;
  border-bottom: 1px solid #cdd2d9;
  margin-bottom: 0.65rem;
}

.hero-simple-title h1 {
  font-size: clamp(2.2rem, 4.2vw, 3.85rem);
  margin-bottom: 0;
}

.hero-simple-copy {
  font-size: 1.05rem;
  line-height: 1.45;
  max-width: 64ch;
  padding-top: 0.35rem;
}

.hero-why {
  margin-top: 0.85rem;
  padding-left: 0.9rem;
  border-left: 2px solid rgba(0, 51, 102, 0.22);
}

.hero-why h3 {
  margin-bottom: 0.3rem;
  font-size: 1.02rem;
  color: var(--ink-strong);
}

.hero-why-list {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.25rem;
  font-size: 0.95rem;
}

.hero-inline-links {
  margin-top: 0.7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 0.8rem;
  font-size: 0.96rem;
}

.hero-inline-links strong {
  color: var(--ink-strong);
}

.hero-inline-links a {
  color: var(--ink-soft);
  text-underline-offset: 2px;
}

.hero-inline-links a:hover,
.hero-inline-links a:focus-visible {
  color: var(--bc-blue-deep);
}

.hero-inline-note {
  color: var(--ink-soft);
}

.home-hero-copy > p:first-child {
  font-size: 1.2rem;
  line-height: 1.45;
}

.home-hero-copy .hero-why-list,
.home-hero-copy .hero-inline-links {
  font-size: 1.1rem;
}

.topic-hero {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(380px, 1fr);
  gap: 2.5rem;
  align-items: start;
  padding: 45px 0;
  border-bottom: 1px solid #cdd2d9;
}

.topic-left h1 {
  margin-top: 0.55rem;
  font-size: clamp(2.2rem, 4.4vw, 3.9rem);
}

.topic-back {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 1rem;
}

.topic-back:hover,
.topic-back:focus-visible {
  color: var(--bc-blue-deep);
  text-decoration: underline;
}

.topic-right {
  padding-top: 0.25rem;
}

.topic-lead {
  font-size: clamp(1.2rem, 1.6vw, 1.45rem);
  line-height: 1.5;
  color: var(--ink-strong);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.button {
  text-decoration: none;
  border-radius: 999px;
  padding: 0.62rem 1rem;
  font-weight: 700;
  font-size: 0.9rem;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(0, 37, 72, 0.24);
  outline: none;
}

.button-primary {
  background: var(--bc-blue);
  color: #ffffff;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.86);
  border-color: #b8cde5;
  color: var(--bc-blue-deep);
}

.scope,
.depth,
.publications {
  margin-top: 2.4rem;
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
}

.section-heading {
  margin-bottom: 1rem;
}

.section-intro {
  margin-bottom: 1rem;
  color: var(--ink-body);
  max-width: 74ch;
}

.draft-notice {
  max-width: 980px;
  margin: 0 0 1.1rem;
  padding: 0.85rem 1rem;
  border: 1px solid #e6a5ad;
  border-left: 4px solid #c64756;
  border-radius: 6px;
  background: #fff0f2;
  color: #553039;
  box-shadow: 0 8px 18px rgba(198, 71, 86, 0.07);
}

.draft-notice strong {
  color: #8f2431;
}

.document-preview {
  width: 100%;
  min-height: 78vh;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.scope-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.scope-card {
  grid-column: span 1;
  border-radius: 0;
  border: 0;
  border-left: 2px solid rgba(0, 51, 102, 0.2);
  background: transparent;
  padding: 0.15rem 0 0.15rem 0.9rem;
  transition: border-color 0.22s ease;
}

.scope-card h3 {
  font-size: 1rem;
}

.scope-link {
  color: var(--ink-strong);
  text-decoration: none;
}

.scope-link:hover,
.scope-link:focus-visible {
  color: var(--bc-blue-deep);
  text-decoration: underline;
}

.scope-card p {
  font-size: 0.95rem;
  line-height: 1.45;
}

.scope-card:hover {
  border-color: var(--bc-blue-surface);
}

.scope-highlight {
  grid-column: 1 / -1;
  justify-self: center;
  width: min(920px, calc(100% - 30px));
  margin-top: 50px;
  border: 1px solid rgba(252, 186, 25, 0.8);
  background: linear-gradient(90deg, rgba(252, 186, 25, 0.2) 0%, rgba(252, 186, 25, 0.1) 38%, rgba(0, 51, 102, 0.04) 100%);
  border-radius: 10px;
  padding: 0.85rem 1.1rem;
  text-align: center;
}

.scope-highlight h3 {
  margin-bottom: 0.2rem;
  color: var(--bc-blue-deep);
}

.scope-highlight p {
  margin: 0 auto;
  max-width: 62ch;
}

.depth-divider {
  border-top: 1px solid #cdd2d9;
  margin: 0 0 0.9rem;
}

.depth-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(280px, 1fr);
  gap: 1rem;
  align-items: start;
}

.depth-main {
  margin-top: 1rem;
}

.depth-main.depth-figure {
  margin-top: 1rem;
}

.depth-side {
  margin-top: 1rem;
  border-left: 2px solid rgba(0, 51, 102, 0.2);
  padding-left: 0.9rem;
}

.depth-side h3 {
  margin-top: 0;
  margin-bottom: 0.35rem;
  font-size: 1.05rem;
}

.depth-side p {
  font-size: 0.94rem;
  color: var(--ink-body);
}

.depth-side-list {
  margin: 0.55rem 0 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.publication-filters {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 230px;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.publication-filters input,
.publication-filters select {
  width: 100%;
  padding: 0.62rem 0.68rem;
  border-radius: 6px;
  border: 1px solid #c4cad3;
  background: #ffffff;
  color: var(--ink-strong);
  font-family: inherit;
  font-size: 0.95rem;
}

.publication-filters input:focus-visible,
.publication-filters select:focus-visible {
  outline: 2px solid rgba(26, 90, 150, 0.25);
  border-color: var(--bc-blue-surface);
}

.compute-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.compute-grid-2 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.depth-figure {
  margin: 1rem 0 0;
  border-radius: 4px;
  border: 0;
  overflow: hidden;
  background: #0b2238;
}

.depth-figure img {
  width: 100%;
  display: block;
}

.depth-figure figcaption {
  background: rgba(7, 18, 29, 0.9);
  color: #d8e6f5;
  font-size: 0.88rem;
  padding: 0.6rem 0.75rem;
}

.publication-table-wrap {
  overflow-x: auto;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.publication-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
  background: transparent;
}

.publication-table th,
.publication-table td {
  padding: 0.68rem 0.65rem;
  text-align: left;
  border-bottom: 1px solid #d8dde4;
  vertical-align: top;
}

.publication-table th {
  background: transparent;
  color: var(--ink-strong);
  font-size: 0.87rem;
  letter-spacing: 0;
  text-transform: none;
  border-bottom: 1px solid #bfc7d2;
}

.publication-table tr:last-child td {
  border-bottom: 0;
}

.publication-table td:nth-child(1) {
  color: var(--ink-soft);
  width: 148px;
  white-space: nowrap;
}

.publication-table td:nth-child(3) {
  width: 250px;
}

.publication-table td:nth-child(4) {
  width: 110px;
}

.paper-title {
  color: var(--ink-strong);
  text-decoration: none;
  font-weight: 600;
}

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

.paper-accordion {
  margin: 0;
}

.paper-accordion summary {
  cursor: pointer;
  list-style: none;
}

.paper-accordion summary::-webkit-details-marker {
  display: none;
}

.paper-accordion summary::after {
  content: "+";
  color: var(--bc-blue-deep);
  margin-left: 0.55rem;
  font-weight: 700;
}

.paper-accordion[open] summary::after {
  content: "-";
}

.paper-accordion-body {
  margin-top: 0.35rem;
  padding-left: 0.05rem;
}

.paper-accordion-body p {
  margin: 0 0 0.35rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.paper-accordion-body a {
  font-size: 0.9rem;
  color: var(--bc-blue-deep);
}

.stream-link {
  color: var(--bc-blue-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.stream-link:hover,
.stream-link:focus-visible {
  color: var(--bc-blue);
}

.benchmark-list {
  margin: 0.35rem 0 0.85rem;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.3rem;
}

.benchmark-inline-heading {
  margin: 0.8rem 0 0.3rem;
  color: var(--ink-strong);
  font-size: 0.92rem;
}

.benchmark-table-wrap {
  overflow-x: auto;
  margin-bottom: 0.8rem;
}

.benchmark-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.benchmark-table th,
.benchmark-table td {
  text-align: left;
  padding: 0.42rem 0.45rem;
  border-bottom: 1px solid #d8dde4;
  vertical-align: top;
}

.benchmark-table th {
  color: var(--ink-strong);
  border-bottom: 1px solid #bfc7d2;
}

.empty-state {
  margin-top: 0.75rem;
  color: var(--ink-soft);
}

.site-footer {
  background: linear-gradient(180deg, #003366 0%, #00284d 100%);
  color: #dbe8f6;
  padding: 1.5rem 0;
  border-top: 3px solid var(--bc-gold);
}

.footer-inner {
  width: min(1440px, calc(100% - 2rem));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
}

.site-footer h2 {
  color: #ffffff;
  margin-bottom: 0.35rem;
}

.site-footer .eyebrow {
  color: var(--bc-gold);
}

.footer-meta {
  border-left: 1px solid rgba(189, 213, 238, 0.38);
  padding-left: 1rem;
  display: grid;
  align-content: start;
  gap: 0.3rem;
}

.footer-meta p {
  color: #c7d9ed;
  font-size: 0.9rem;
}

.copyright {
  margin-top: 0.4rem;
  color: #a7bfda;
  font-size: 0.83rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.56s ease, transform 0.56s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-simple {
    gap: 1rem;
    padding: 30px 0;
  }

  .hero-simple-title h1 {
    font-size: clamp(1.9rem, 7vw, 2.8rem);
  }

  .hero-why {
    padding-left: 0.75rem;
  }

  .topic-hero {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 30px 0;
  }

  .topic-left h1 {
    margin-top: 0.3rem;
    font-size: clamp(1.9rem, 7vw, 2.8rem);
  }

  .topic-right {
    padding-top: 0;
  }

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

  .scope-card {
    grid-column: span 1;
  }

  .scope-highlight {
    grid-column: 1 / -1;
    width: calc(100% - 12px);
    text-align: left;
  }

  .depth-layout {
    grid-template-columns: 1fr;
    gap: 0.7rem;
  }

  .depth-side {
    margin-top: 0;
    border-left: 0;
    border-top: 1px solid #cdd2d9;
    padding: 0.75rem 0 0;
  }

  .publication-filters {
    grid-template-columns: 1fr;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-meta {
    border-left: 0;
    border-top: 1px solid rgba(169, 193, 222, 0.32);
    padding-left: 0;
    padding-top: 0.8rem;
  }
}

@media (max-width: 740px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
  }

  main {
    width: min(1440px, calc(100% - 1rem));
    margin-top: 1rem;
  }

  .hero-simple {
    padding: 20px 0;
  }

  .home-hero-copy > p:first-child {
    font-size: 1.1rem;
  }

  .home-hero-copy .hero-why-list,
  .home-hero-copy .hero-inline-links {
    font-size: 1rem;
  }

  .topic-hero {
    padding: 20px 0;
  }

  .publication-table th,
  .publication-table td {
    padding-left: 0.45rem;
    padding-right: 0.45rem;
  }

  .compute-grid,
  .compute-grid-2 {
    grid-template-columns: 1fr;
  }
}

.sre-guide {
  max-width: 60rem;
  margin: 2rem auto 4rem;
  padding: 0 1.25rem;
  font-family: "BC Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.6;
  color: #2d2d2d;
}

.sre-guide h1,
.sre-guide h2,
.sre-guide h3 {
  color: #013366;
  line-height: 1.25;
}

.sre-guide h1 {
  border-bottom: 2px solid #fcba19;
  padding-bottom: 0.4rem;
}

.sre-guide h2 {
  margin-top: 2.5rem;
  border-bottom: 1px solid #d8d8d8;
  padding-bottom: 0.3rem;
}

.sre-guide h3 {
  margin-top: 2rem;
}

.sre-guide p {
  margin: 1em 0;
}

.sre-guide a {
  color: #1a5a96;
}

.sre-guide a:hover {
  color: #013366;
}

.sre-guide a:focus-visible,
.sre-guide summary:focus-visible {
  outline: 3px solid #3b99fc;
  outline-offset: 2px;
}

.sre-guide code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: #f2f2f2;
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

.sre-guide pre {
  background: #f6f8fa;
  border: 1px solid #d8d8d8;
  border-radius: 4px;
  padding: 1rem;
  overflow-x: auto;
  line-height: 1.45;
}

.sre-guide pre code {
  background: none;
  padding: 0;
  font-size: 0.85rem;
}

.sre-guide blockquote {
  margin: 1.25rem 0;
  padding: 0.75rem 1rem;
  background: #fdf6e3;
  border-left: 4px solid #fcba19;
}

.sre-guide blockquote p {
  margin: 0.4rem 0;
}

.sre-guide .table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
}

.sre-guide table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.95rem;
}

.sre-guide th,
.sre-guide td {
  border: 1px solid #d8d8d8;
  padding: 0.5rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.sre-guide th {
  background: #f2f2f2;
  color: #013366;
}

.sre-guide li {
  margin: 0.25rem 0;
}