/* ELI5 Lab — Shared Visual System for All Studies */
@font-face {
  font-family: 'Outfit';
  src: url('assets/outfit.ttf') format('truetype');
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --bg: #161616;
  --surface: #202020;
  --raised: #282828;
  --raised-hover: #323232;
  --fg: #f1eee8;
  --fg-dim: #dedcd6;
  --muted: #a5a29c;
  --faint: #73706a;
  --border: #3b3936;
  --border-subtle: #292826;
  --accent: #ff8059;
  --accent-soft: rgba(255, 128, 89, 0.14);
  --accent-hover: #ffa385;
  --ink: #20120c;

  --teal: #76d5c1;
  --teal-soft: rgba(118, 213, 193, 0.14);
  --gold: #f5c76a;
  --gold-soft: rgba(245, 199, 106, 0.14);
  --blue: #8fc9fb;
  --blue-soft: rgba(143, 201, 251, 0.14);
  --purple: #c3b8ff;
  --purple-soft: rgba(195, 184, 255, 0.14);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.14);

  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  scrollbar-width: none;
  background-color: var(--bg);
  color: var(--fg);
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--fg);
  line-height: 1.75;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image: radial-gradient(ellipse at 85% 20%, rgba(255, 128, 89, 0.04), transparent 60%);
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}
a:hover {
  color: var(--accent-hover);
}

/* ==========================================================================
   1. STANDALONE MASTHEAD (Perfect Grid Alignment with Content Container)
   ========================================================================== */
header.study-masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 78px;
  width: 100%;
  background: rgba(22, 22, 22, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 0;
  color: #fff;
}

header.study-masthead::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, #ff8059 0 72px, rgba(255, 255, 255, 0.16) 72px 100%);
}

header.study-masthead .masthead-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header.study-masthead .brand {
  display: flex;
  align-items: center;
  gap: 13px;
  color: #f5f1e9;
  text-decoration: none;
}
header.study-masthead .brand:hover {
  color: #fff;
  opacity: 0.85;
}

header.study-masthead .brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: #ff8059;
  color: #21110c;
  font: 700 14px/1 var(--font-mono);
  letter-spacing: -0.05em;
  border-radius: 0;
  flex-shrink: 0;
}

header.study-masthead .brand-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 26px;
  line-height: 0.9;
  letter-spacing: -1.4px;
  font-weight: 600;
}
header.study-masthead .brand-copy b {
  font-weight: 400;
  color: #b7b4ae;
}
header.study-masthead .brand-copy small {
  font: 8px/1 var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #8e8b85;
}
header.study-masthead .brand-dot {
  margin: 0 2px;
  color: #ff8059;
}

header.study-masthead .nav-right {
  display: flex;
  gap: 16px;
  align-items: center;
}

header.study-masthead .topic-tag {
  font: 10px/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-right: 6px;
}

header.study-masthead .back-btn {
  height: 40px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid #ff8059;
  border-radius: 0;
  background: #ff8059;
  color: #22120d;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}
header.study-masthead .back-btn b {
  font-size: 15px;
  font-weight: 400;
}
header.study-masthead .back-btn:hover {
  background: transparent;
  color: #ff8059;
}

/* Reading Progress Bar */
.eli5-progress-track {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  z-index: 101;
  pointer-events: none;
}
.eli5-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.1s ease-out;
}

/* Inside Reader Modal: hide duplicate inner masthead! */
body.in-frame header.study-masthead {
  display: none !important;
}
body.in-frame .eli5-study-container {
  padding-top: 28px;
}

/* ==========================================================================
   2. UNIFIED CONTENT CONTAINER (All studies share exact same alignment)
   ========================================================================== */
.eli5-study-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px 90px;
  width: 100%;
}

.eli5-hero-kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  font: 11px/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.eli5-hero-kicker i {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--accent);
}
.eli5-hero-kicker .live-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  margin-left: auto;
}
.eli5-hero-kicker .live-dot::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

/* THE DEPTH CARD: QUESTION -> MECHANISM -> INTUITION */
.hero-depth-card {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 9px 18px;
  margin-bottom: 32px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(22, 22, 22, 0.75);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #dedcd6;
  font: 11px/1 var(--font-mono);
  letter-spacing: 0.14em;
  white-space: nowrap;
}

.hero-depth-card .step-tag {
  color: var(--accent);
  font-weight: 700;
  margin-right: 2px;
}

.hero-depth-card i {
  width: 22px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 128, 89, 0.8), rgba(255, 255, 255, 0.2));
  position: relative;
  display: inline-block;
}
.hero-depth-card i::after {
  content: '';
  position: absolute;
  right: -1px;
  top: -2px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* ==========================================================================
   3. ARTICLE CONTENT & TYPOGRAPHY
   ========================================================================== */
.eli5-study-container h1, .hero h1 {
  margin-bottom: 20px;
}

.eli5-study-container h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.25;
  color: #fff;
  margin: 44px 0 16px;
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
  position: relative;
}
.eli5-study-container h2::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--accent);
}

.eli5-study-container h3 {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 30px 0 12px;
}

.eli5-study-container p {
  font-size: 16.5px;
  color: var(--fg-dim);
  line-height: 1.75;
  margin-bottom: 20px;
}

.eli5-study-container strong {
  color: #fff;
  font-weight: 600;
}

.eli5-study-container .lead, .eli5-study-container .lede {
  font-size: 19px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 28px;
}

/* Sections & Bands inside studies */
.course-section, .band, .scene, .panel, .wrap, .section {
  padding: 36px 0 !important;
  border-top: 1px solid var(--border-subtle);
}
.course-section:first-of-type {
  border-top: 0;
}

.grid2, .grid3 {
  display: grid;
  gap: 18px;
  margin: 24px 0;
}
.grid2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card, .taccount, .snapshot {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 20px;
  border-radius: 0;
}
.taccount {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.taccount h4 {
  grid-column: span 2;
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 4px;
}

.formula {
  padding: 16px 20px;
  background: var(--surface);
  border-left: 3px solid var(--accent);
  font-family: var(--font-mono);
  font-size: 15px;
  color: #fff;
  margin: 20px 0;
}

.lab {
  margin: 32px 0;
  border: 1px solid var(--border);
  background: #1a1c18;
  padding: 24px;
}
.lab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
/* Wide screens: give the chart two thirds so its 520-wide viewBox renders near 1:1 */
@media (min-width: 761px) {
  .lab-grid { grid-template-columns: minmax(240px, 1fr) minmax(0, 2fr); }
}
.controls .control {
  margin-bottom: 14px;
}
.controls label {
  display: block;
  font: 11px/1 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.controls input, .controls select {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: #fff;
  font-size: 14px;
}
.controls input:focus, .controls select:focus {
  border-color: var(--accent);
  outline: none;
}
.controls .actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}
.controls button {
  height: 38px;
  padding: 0 16px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #20120c;
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
}
.controls button.secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}
.output {
  padding: 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 14px;
  line-height: 1.6;
}
.model-limit {
  font-size: 12px;
  color: var(--faint);
  margin-top: 14px;
}

.table-wrap {
  overflow-x: auto;
  margin: 24px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th, td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}
th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
}

.quiz {
  margin: 28px 0;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.quiz fieldset {
  border: 0;
}
.quiz legend {
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
  font-size: 15px;
}
.quiz label {
  display: block;
  margin-bottom: 8px;
  cursor: pointer;
  font-size: 14px;
}
.quiz button {
  margin-top: 12px;
  height: 36px;
  padding: 0 14px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #20120c;
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
}

details.trace {
  margin: 24px 0;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  font-size: 13px;
}
details.trace summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
details.trace ul {
  margin: 14px 0 0 18px;
  line-height: 1.6;
}

/* ==========================================================================
   4. CORE INTUITION TAKEAWAY
   ========================================================================== */
.eli5-takeaway-card {
  margin: 60px 0 30px;
  padding: 34px 28px;
  background: radial-gradient(ellipse at top left, rgba(255, 128, 89, 0.08), transparent 70%), var(--surface);
  border: 1px solid var(--border);
  border-radius: 0;
  position: relative;
}
.eli5-takeaway-card .takeaway-eyebrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font: 11px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.eli5-takeaway-card blockquote {
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.4;
  color: #fff;
  margin-bottom: 24px;
}
.eli5-takeaway-card .takeaway-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}
.eli5-takeaway-card .takeaway-actions a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 500;
}
.eli5-takeaway-card .takeaway-actions a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   5. RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 760px) {
  header.study-masthead {
    height: 70px;
  }
  header.study-masthead .masthead-inner {
    padding: 0 16px;
  }
  header.study-masthead .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 12px;
  }
  header.study-masthead .brand-copy {
    font-size: 21px;
  }
  header.study-masthead .brand-copy small, header.study-masthead .topic-tag {
    display: none;
  }
  header.study-masthead .back-btn {
    height: 36px;
    padding: 0 12px;
    font-size: 11px;
    gap: 8px;
  }
  .hero-depth-card {
    font-size: 9px;
    gap: 8px;
    padding: 7px 12px;
  }
  .hero-depth-card i {
    width: 14px;
  }
  .eli5-takeaway-card {
    padding: 22px 18px;
  }
}

/* Reset layout grid wrappers from legacy structures */
.layout {
  display: block !important;
  max-width: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
}
.content, main.content {
  display: block !important;
  max-width: 100% !important;
  width: 100% !important;
  padding: 0 !important;
  margin: 0 !important;
}
.hero {
  padding: 10px 0 28px !important;
  background: transparent !important;
}
.hero h1 {
  max-width: 100% !important;
}
.course-section {
  padding: 36px 0 !important;
  background: transparent !important;
}

/* ==========================================================================
   6. LEGACY STUDY NORMALIZATION
   Old explainers keep their bespoke diagrams and interactions, while this
   shared layer gives every page the same ELI5 Lab reading surface.
   ========================================================================== */
:root {
  --paper: var(--bg);
  --card: var(--surface);
  --wash: var(--raised);
  --ink: var(--fg);
  --body: var(--fg-dim);
  --line: var(--border);
  --line-soft: var(--border-subtle);
  --white: var(--fg);
  --gray: var(--surface);
  --grey: var(--surface);
  --brand: var(--accent);
  --maroon: var(--accent);
  --saffron: var(--accent);
  --saffron2: var(--accent-hover);
  --green: var(--teal);
  --good: var(--teal);
  --blue: var(--blue);
  --focus: var(--accent);
  --shadow: none;
  --radius: 0px;
  --radius-lg: 0px;
}

body {
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 14%, rgba(19, 88, 96, 0.12), transparent 34rem),
    radial-gradient(circle at 82% 28%, rgba(255, 128, 89, 0.07), transparent 32rem),
    #07090b !important;
}

/* Remove page-specific chrome now duplicated by the shared masthead. */
.eli5-study-container > .layout > .toc,
.eli5-study-container > nav,
.eli5-study-container > header.mast,
.eli5-study-container main > header.mast,
.eli5-study-container .mobile-toc {
  display: none !important;
}

/* One reading column across every legacy structure. */
.eli5-study-container :where(.inner, .wrap, .page, .scene-inner, .hero-inner, .copy, .copy--wide) {
  width: 100% !important;
  max-width: none !important;
  margin-left: 0 !important;
  margin-right: 0 !important;
}

.eli5-study-container :where(main, .page, .content) {
  color: var(--fg-dim) !important;
  background: transparent !important;
}

.eli5-study-container :where(.hero, .band, .scene, .panel, .chapter, .closing) {
  color: var(--fg-dim) !important;
  background: transparent !important;
  box-shadow: none !important;
}

.eli5-study-container :where(.band, .scene, .panel, .chapter) {
  padding: 42px 0 !important;
  border-left: 0 !important;
  border-right: 0 !important;
  border-bottom: 0 !important;
  border-top: 1px solid var(--border-subtle) !important;
}

.eli5-study-container > :where(.hero, header.hero),
.eli5-study-container main > :where(.hero, header.hero),
.eli5-study-container .layout .hero {
  padding: 6px 0 38px !important;
  border: 0 !important;
  text-align: left !important;
}

.eli5-study-container :where(.hero h1, h1) {
  max-width: 15ch !important;
  margin-left: 0 !important;
  margin-right: 0 !important;
  color: var(--fg) !important;
  font-family: var(--font-sans) !important;
  font-weight: 400 !important;
  font-size: clamp(42px, 7vw, 72px) !important;
  line-height: 0.98 !important;
  letter-spacing: -0.055em !important;
}

.eli5-study-container :where(h2, h3, h4, h5) {
  color: var(--fg) !important;
  font-family: var(--font-sans) !important;
}

.eli5-study-container :where(h2) {
  font-weight: 400 !important;
  letter-spacing: -0.035em !important;
}

.eli5-study-container :where(p, li, dd) {
  color: var(--fg-dim);
}

.eli5-study-container :where(.lead, .lede, .body) {
  max-width: 68ch !important;
  color: var(--muted) !important;
  font-size: clamp(17px, 2vw, 20px) !important;
  line-height: 1.65 !important;
}

.eli5-study-container :where(.eyebrow, .kicker, .label, .src, .smallprint, .source-note, .caption) {
  font-family: var(--font-mono) !important;
  letter-spacing: 0.08em;
}

.eli5-study-container :where(.eyebrow, .kicker, .label) {
  color: var(--accent) !important;
  text-transform: uppercase;
}

/* Shared surface language: square, quiet, high-contrast. */
.eli5-study-container :where(
  .card, .viz, .figure, .diagram, .callout, .snapshot, .quote, .note,
  .analogy, .lens, .check, .risk, .source-block, .evidence-board,
  .math-audit, .math-viz, .truth-strip, .stat, .mapping, .formula,
  .lab, .output, .eqbox, .equation, .not-oracle, .bottom-line,
  .compute-strip, .balance, .complaint, .verdict
) {
  color: var(--fg-dim) !important;
  background-color: rgba(255, 255, 255, 0.035) !important;
  border-color: var(--border) !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}

.eli5-study-container :where(.card, .viz, .figure, .callout, .quote, .note, .stat, .mapping) {
  padding: clamp(16px, 3vw, 24px) !important;
}

.eli5-study-container :where(.pill, .tag, .status, .chip, .stamp, .mode, .source-link) {
  border-radius: 999px !important;
  border-color: var(--border) !important;
  background: var(--accent-soft) !important;
  color: var(--accent) !important;
  box-shadow: none !important;
}

.eli5-study-container :where(input, select, textarea) {
  max-width: 100%;
  background: #0c0f12 !important;
  color: var(--fg) !important;
  border: 1px solid var(--border) !important;
  border-radius: 0 !important;
}

.eli5-study-container :where(button) {
  border-radius: 0 !important;
  box-shadow: none !important;
}

.eli5-study-container :where(button:not(.secondary)) {
  background: var(--accent) !important;
  border-color: var(--accent) !important;
  color: #20120c !important;
}

.eli5-study-container :where(button.secondary) {
  background: transparent !important;
  border-color: var(--border) !important;
  color: var(--fg) !important;
}

.eli5-study-container :where(.chapter-no, .number, .rule-num, .check__n, .gear__num) {
  background: var(--accent) !important;
  color: #20120c !important;
  border-radius: 0 !important;
}

.eli5-study-container :where(.caption, .src, .fine, .small, .model-limit, footer, .footer) {
  color: var(--faint) !important;
}

.eli5-study-container :where(footer, .footer) {
  background: transparent !important;
  border-top: 1px solid var(--border-subtle) !important;
}

/* Keep wide teaching visuals usable instead of forcing them off-screen. */
.eli5-study-container :where(svg, img, canvas, video) {
  max-width: 100%;
}

.eli5-study-container :where(.diagram, .scrollable, .table-wrap, pre) {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.eli5-study-container pre,
.eli5-study-container code {
  font-family: var(--font-mono);
}

@media (max-width: 760px) {
  body {
    font-size: 16px;
  }

  .eli5-study-container {
    padding: 22px 16px 56px;
  }

  .eli5-hero-kicker {
    gap: 9px;
    font-size: 9px;
  }

  .eli5-hero-kicker .live-dot {
    display: none;
  }

  .hero-depth-card {
    max-width: 100%;
    overflow: hidden;
    white-space: nowrap;
  }

  .eli5-study-container :where(.hero h1, h1) {
    max-width: 11ch !important;
    font-size: clamp(38px, 12vw, 54px) !important;
  }

  .eli5-study-container :where(.band, .scene, .panel, .chapter, .course-section) {
    padding: 32px 0 !important;
  }

  .eli5-study-container :where(.grid2, .grid3, .cols, .two, .two-col, .duo, .trio, .watch, .risk-grid, .signal-grid, .source-grid, .math-grid, .claim-grid, .complaint-grid, .sandboxgrid, .check-grid) {
    grid-template-columns: 1fr !important;
  }

  .eli5-study-container :where(.chapter-head) {
    grid-template-columns: 38px minmax(0, 1fr) !important;
    gap: 12px !important;
  }

  .eli5-study-container :where(.chapter-no, .number) {
    width: 38px !important;
    height: 38px !important;
    min-width: 38px !important;
    font-size: 14px !important;
  }

  .eli5-study-container :where(.actions, .lab-row, .slider-row) {
    align-items: stretch !important;
  }

  .eli5-study-container :where(.actions) {
    flex-wrap: wrap !important;
  }

  .eli5-study-container :where(.actions button) {
    min-height: 44px;
  }

  .eli5-study-container table {
    min-width: 620px;
  }
}

/* ==========================================================================
   SERIES NAVIGATION (rendered by eli5-study.js from series.js)
   ========================================================================== */
.series-strip[data-series="top"]:not(:empty) {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  margin: 0 0 28px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.025);
  font: 11px/1.5 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.series-strip .series-name { color: var(--teal); }
.series-strip .series-here::before { content: '/'; margin-right: 14px; color: var(--faint); }
.series-strip[data-series="top"] a { margin-left: auto; }

.series-strip[data-series="end"]:not(:empty) { margin: 48px 0 0; }
.series-end-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  font: 11px/1.5 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
}
.series-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  padding: 1px;
}
.series-card {
  display: block;
  min-height: 96px;
  padding: 16px 18px;
  background: var(--surface);
  outline: 1px solid var(--border);
  color: var(--fg);
}
a.series-card:hover { background: var(--raised); color: var(--fg); }
.series-card small {
  display: block;
  margin-bottom: 6px;
  font: 11px/1.4 var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.series-card b { display: block; font-size: 18px; font-weight: 500; line-height: 1.35; }
.series-card em { display: block; margin-top: 6px; font: normal 11px/1.4 var(--font-mono); letter-spacing: 0.06em; color: var(--gold); }
.series-card.soon b { color: var(--muted); }
.series-cards > :last-child { text-align: right; }
@media (max-width: 600px) {
  .series-cards { grid-template-columns: 1fr; }
  .series-cards > :last-child { text-align: left; }
  .series-cards > span:empty { display: none; }
}