/* ============================================================
   Beaver Framework — Global Stylesheet
   Warm neutral palette, academic minimal style
   ============================================================ */

/* ── Design Tokens ────────────────────────────────────────── */
:root {
  /* Color palette */
  --color-bg:          #fdf8f2;
  --color-surface:     #f5ece0;
  --color-surface-2:   #ede0cf;
  --color-border:      #e8d5c0;
  --color-text:        #3d2b1f;
  --color-text-muted:  #7a5c45;
  --color-accent:      #8b5e3c;
  --color-accent-dark: #6b4528;
  --color-link:        #8b5e3c;
  --color-link-hover:  #6b4528;
  --color-row-hover:   #f0e4d4;
  --color-top3:        #a0522d;
  --color-tag-bg:      #8b5e3c;
  --color-tag-text:    #fff;

  /* Typography */
  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body:    system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'Courier New', Courier, monospace;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  2rem;
  --space-xl:  4rem;

  /* Layout */
  --container-width: 1000px;
  --prose-width:     700px;

  /* Misc */
  --radius-sm:   4px;
  --radius-md:   8px;
  --shadow-sm:   0 1px 3px rgba(61,43,31,0.08);
  --shadow-card: 0 2px 8px rgba(61,43,31,0.10);
  --transition:  0.15s ease;
}

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  width: 100%;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-link-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

/* ── Layout ───────────────────────────────────────────────── */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.prose {
  max-width: var(--prose-width);
  margin: 0 auto;
}

.prose p,
.prose li {
  line-height: 1.85;
  color: var(--color-text);
  margin-bottom: 1rem;
}

/* ── Site Header & Navigation ─────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
}

.brand-icon {
  width: 2rem;
  height: 2rem;
  object-fit: contain;
  display: block;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.01em;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.site-nav a.nav-external::after {
  content: ' ↗';
  font-size: 0.75em;
  opacity: 0.7;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 1.1rem;
  padding: 0.3rem 0.55rem;
  cursor: pointer;
}

/* ── Hero Sections ────────────────────────────────────────── */
.hero {
  padding: 3.5rem 0 2.5rem;
  text-align: center;
}

.hero-identity {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.75rem;
  margin-bottom: 1.75rem;
  text-align: left;
}

.hero-icon {
  width: 110px;
  height: 110px;
  object-fit: contain;
  flex-shrink: 0;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0;
  line-height: 1.7;
}

.hero-links {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.page-hero {
  padding: 2.25rem 0 1.75rem;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.page-hero h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.page-hero .lead {
  color: var(--color-text-muted);
  font-size: 1rem;
  margin: 0;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn-secondary:hover {
  background: var(--color-accent);
  color: #fff;
}

/* ── News Bar ─────────────────────────────────────────────── */
.news-bar {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 0.9rem 0;
}

.news-bar .container {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.news-heading {
  font-family: var(--font-body);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  font-weight: 600;
  white-space: nowrap;
  padding-top: 0.1rem;
  flex-shrink: 0;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.news-list li {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.5;
}

.news-list time {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-right: 0.5rem;
  font-variant-numeric: tabular-nums;
}

.news-list a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.news-loading {
  color: var(--color-text-muted);
  font-style: italic;
  font-size: 0.88rem;
}

/* ── Section Titles ───────────────────────────────────────── */
.section-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  padding-top: 2.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.section-desc {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

/* ── Leaderboard Table ────────────────────────────────────── */
.table-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
}

.filter-input {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.88rem;
  min-width: 200px;
  transition: border-color var(--transition);
}

.filter-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.filter-input::placeholder {
  color: var(--color-text-muted);
}

.sort-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.sort-select {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.88rem;
  cursor: pointer;
}

.sort-select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 0.5rem;
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.leaderboard-table thead th {
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: right;
  padding: 0.65rem 0.9rem;
  position: sticky;
  top: 0;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.leaderboard-table thead th.col-model,
.leaderboard-table thead th.col-org {
  text-align: left;
}

.leaderboard-table thead th a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.leaderboard-table thead th a:hover {
  color: var(--color-accent);
}

.leaderboard-table tbody td {
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--color-border);
  text-align: right;
  vertical-align: middle;
  font-variant-numeric: tabular-nums;
}

.leaderboard-table tbody td.col-model {
  text-align: left;
  font-weight: 600;
  color: var(--color-text);
}

.leaderboard-table tbody td.col-org {
  text-align: left;
}

.org-cell {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.org-icon {
  width: 1rem;
  height: 1rem;
  object-fit: contain;
  flex-shrink: 0;
}

.org-name {
  font-size: 0.83rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.leaderboard-table tbody td.col-params {
  color: var(--color-text-muted);
  font-size: 0.83rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.leaderboard-table thead th.col-params {
  text-align: right;
  min-width: 60px;
}

.leaderboard-table tbody td.col-score {
  font-weight: 700;
  color: var(--color-accent);
}

.leaderboard-table tbody tr:last-child td {
  border-bottom: none;
}

.leaderboard-table tbody tr:hover td {
  background: var(--color-row-hover);
}

/* Sticky model column for horizontal scroll */
.leaderboard-table td.col-model,
.leaderboard-table th.col-model {
  position: sticky;
  left: 0;
  z-index: 1;
}

.leaderboard-table th.col-model {
  background: var(--color-surface-2);
  box-shadow: 2px 0 4px rgba(61,43,31,0.06);
}

.leaderboard-table td.col-model {
  background: var(--color-bg);
  box-shadow: 2px 0 4px rgba(61,43,31,0.04);
}

.leaderboard-table tbody tr:hover td.col-model {
  background: var(--color-row-hover);
}

/* Score links in benchmark columns */
.leaderboard-table tbody td a {
  color: inherit;
  font-weight: inherit;
}

.leaderboard-table tbody td a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ── RDR color coding (Risk-Defaulting Rate) ────────────────
   Lower RDR = better. <1% green, 1-10% yellow, >10% red. */
.rdr-cell {
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.rdr-low  { color: #2d6a2d; }   /* <1%: green */
.rdr-mid  { color: #8a5f00; }   /* 1-10%: amber/yellow */
.rdr-high { color: #b91c1c; }   /* >10%: red */
.rdr-missing { color: var(--color-text-muted); font-style: italic; }

/* Column header for datasets — clickable, centered */
.leaderboard-table thead th.col-dataset {
  min-width: 90px;
  text-align: center;
  cursor: pointer;
  transition: background var(--transition);
}

.leaderboard-table thead th.col-dataset a {
  color: var(--color-accent) !important;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--color-accent) 45%, transparent);
}

.leaderboard-table thead th.col-dataset a:hover {
  color: var(--color-accent-dark) !important;
  text-decoration-color: var(--color-accent-dark);
}

.leaderboard-table thead th.col-dataset a::after {
  content: " ↗";
  font-size: 0.7em;
  opacity: 0.65;
}

/* Dataset body cells — centered */
.leaderboard-table tbody td.rdr-cell {
  text-align: center;
}

/* Column hover highlight */
.leaderboard-table th.col-dataset.col-hover {
  background: color-mix(in srgb, var(--color-accent) 10%, var(--color-surface));
}

.leaderboard-table td.col-dataset.col-hover {
  background: color-mix(in srgb, var(--color-accent) 6%, var(--color-bg));
}

/* ── Model / Org display ────────────────────────────────── */
.model-display-name {
  font-weight: 600;
  color: var(--color-text);
}

.model-hf-link {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-muted);
  margin-top: 1px;
}

.model-hf-link:hover {
  color: var(--color-accent);
}

.loading-row td {
  color: var(--color-text-muted);
  font-style: italic;
  text-align: center !important;
  padding: 1.5rem;
}

.table-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.4rem;
  margin-bottom: 2rem;
}

/* ── About / Feature Cards ────────────────────────────────── */
.about-section {
  padding-bottom: 3rem;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0 1.75rem;
}

.about-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.4rem;
  box-shadow: var(--shadow-card);
}

.about-card h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--color-accent);
}

.about-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin: 0;
}

/* ── Team Page ────────────────────────────────────────────── */
.team-institution {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 99px;
  padding: 0.3em 0.9em 0.3em 0.6em;
  margin-bottom: 1.5rem;
  letter-spacing: 0.01em;
}

.team-institution-logo {
  height: 18px;
  width: auto;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.team-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem 1.25rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.9rem;
  /* reset <a> styles */
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.team-card:hover {
  box-shadow: 0 4px 16px rgba(61,43,31,0.15);
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

.team-avatar-wrap {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
}

.team-avatar-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-border);
  color: var(--color-text-muted);
  font-size: 1.3rem;
  font-weight: 600;
  align-items: center;
  justify-content: center;
}

.team-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  flex: 1;
  width: 100%;
}

.team-info .team-links {
  margin-top: auto;
  padding-top: 0.5rem;
}

.team-name {
  font-family: var(--font-heading);
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--color-text);
}

.team-affiliation {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  min-height: 1.1em;
}

.team-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.15em 0.55em;
  border-radius: 99px;
}

.team-badge.maintainer {
  background: color-mix(in srgb, var(--color-accent) 15%, transparent);
  color: var(--color-accent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 35%, transparent);
}

.team-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.25rem;
  font-size: 0.82rem;
}

.team-links a {
  color: var(--color-accent);
  text-decoration: none;
}

.team-links a:hover {
  text-decoration: underline;
}

/* ── Overview page: TL;DR, callouts, steps ────────────────── */
.overview-tldr {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 1.75rem 0 0;
  font-size: 0.9rem;
}

.overview-tldr > strong {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-accent);
  margin-bottom: 0.35rem;
}

.overview-tldr ul {
  list-style: disc;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  color: var(--color-text);
  line-height: 1.6;
}

.overview-callout {
  background: color-mix(in srgb, var(--color-accent) 6%, var(--color-bg));
  border: 1px solid color-mix(in srgb, var(--color-accent) 25%, transparent);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 1.25rem 0;
}

.overview-callout-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.overview-callout p {
  margin-bottom: 0.6rem !important;
}

.overview-callout-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.overview-callout-list li::before {
  content: "→ ";
  color: var(--color-accent);
  font-weight: 700;
}

.overview-note {
  font-size: 0.85rem !important;
  color: var(--color-text-muted) !important;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--color-border);
  margin-top: 1rem !important;
}

.overview-steps {
  list-style: none;
  padding: 0;
  margin: 0.9rem 0 0;
  counter-reset: steps;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.overview-steps li {
  counter-increment: steps;
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.5;
}

.overview-steps li::before {
  content: counter(steps);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.5rem;
  height: 1.5rem;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.overview-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.1em 0.55em;
  border-radius: 99px;
  vertical-align: middle;
  margin-left: 0.4rem;
  background: color-mix(in srgb, var(--color-accent) 15%, transparent);
  color: var(--color-accent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 35%, transparent);
}

.overview-badge.secondary {
  background: var(--color-surface);
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

/* ── Concept Sections (Overview page) ─────────────────────── */
.concept-section {
  border-top: 1px solid var(--color-border);
  padding-top: 2.25rem;
  margin-top: 2.25rem;
}

.concept-section:first-of-type {
  border-top: none;
  margin-top: 1.5rem;
}

.concept-section h2 {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.concept-section p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.85;
  margin-bottom: 1rem;
}

.diagram-placeholder {
  margin: 1.5rem 0;
}

.diagram-box {
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--color-text-muted);
  font-style: italic;
  font-size: 0.9rem;
}

.diagram-placeholder figcaption {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 0.5rem;
}

/* ── Benchmark Detail ─────────────────────────────────────── */
.benchmark-desc {
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.benchmark-desc h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
}

.benchmark-desc p {
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--color-text);
}

.benchmark-meta {
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.benchmark-chart-section,
.detail-table-section {
  margin-top: 2.5rem;
  margin-bottom: 2rem;
}

.benchmark-chart-section h2,
.detail-table-section h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
}

.chart-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  max-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Blog Cards ───────────────────────────────────────────── */
.blog-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.75rem;
  padding-bottom: 3rem;
}

.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.6rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition);
}

.blog-card:hover {
  box-shadow: 0 4px 16px rgba(61,43,31,0.13);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.blog-card-meta time {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.blog-tag {
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  border-radius: 3px;
  padding: 2px 7px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.blog-card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  margin: 0.2rem 0 0.5rem;
  line-height: 1.35;
}

.blog-card-title a {
  color: var(--color-text);
  text-decoration: none;
}

.blog-card-title a:hover {
  color: var(--color-accent);
}

.blog-card-excerpt {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 0.75rem;
}

.blog-read-more {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}

.blog-read-more:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.blog-empty {
  color: var(--color-text-muted);
  font-style: italic;
  font-size: 0.9rem;
  padding: 2rem 0;
}

/* ── Notable Observations ─────────────────────────────────── */
.observations-section {
  padding-bottom: 3rem;
}

.observations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.obs-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left-width: 4px;
  border-radius: var(--radius-md);
  padding: 1.1rem 1.3rem;
  box-shadow: var(--shadow-card);
}

.obs-card h3 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  margin-bottom: 0.45rem;
  color: var(--color-text);
}

.obs-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin: 0;
}

.obs-card p strong {
  color: var(--color-text);
  font-weight: 600;
}

.obs-trend   { border-left-color: #2d6a2d; }
.obs-anomaly { border-left-color: #b91c1c; }
.obs-leader  { border-left-color: var(--color-accent); }

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  margin-top: 3rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.3rem;
}

.site-footer p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
  line-height: 1.6;
}

.site-footer a {
  color: var(--color-text-muted);
}

.site-footer a:hover {
  color: var(--color-accent);
}

.footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ── Utilities ────────────────────────────────────────────── */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}

/* ── Responsive / Mobile ──────────────────────────────────── */
@media (max-width: 640px) {
  :root {
    --container-width: 100%;
  }

  .container {
    padding: 0 0.85rem;
  }

  .hero-title {
    font-size: 1.9rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.25rem;
    z-index: 200;
    box-shadow: 0 4px 12px rgba(61,43,31,0.08);
  }

  .site-nav.open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .site-nav a {
    display: block;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
  }

  .site-nav a:last-child {
    border-bottom: none;
  }

  .nav-toggle {
    display: block;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .table-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-input {
    min-width: unset;
    width: 100%;
  }

  .news-bar .container {
    flex-direction: column;
    gap: 0.5rem;
  }

  .footer-inner {
    flex-direction: column;
  }

  .hero-links {
    flex-direction: column;
    align-items: center;
  }

  .page-hero h1 {
    font-size: 1.6rem;
  }

  .hero-identity {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  .hero-icon {
    width: 80px;
    height: 80px;
  }

  .hero-text {
    align-items: center;
  }
}