/* ════════════════════════════════════════════════════════════════════
   XPERI DAY 2 — AWARD-WINNING EDITORIAL THEME
   White · Dark Grey · Gold · Premium typography · No neon
   ════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;0,800;0,900;1,400;1,700&family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* ── Editorial Palette ── */
  --paper: #fafaf7;
  --paper-2: #f4f3ee;
  --ink: #1a1a1a;
  --ink-soft: #2c2c2c;
  --grey-1: #6b6b6b;
  --grey-2: #8a8a8a;
  --grey-3: #b8b8b8;
  --grey-4: #d8d6d0;
  --grey-5: #e8e6e0;
  --white: #ffffff;
  --gold: #b8924a;
  --gold-soft: #c9a35e;
  --gold-dark: #8a6a2e;

  --line: #1a1a1a;
  --line-soft: #c8c6c0;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 20px 50px rgba(0,0,0,0.10);

  --serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--ink); color: var(--paper); }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--paper-2); }
::-webkit-scrollbar-thumb { background: var(--ink); }
::-webkit-scrollbar-thumb:hover { background: var(--gold-dark); }

/* ─────────────────────────────────────────────────────────────
   NAV — Editorial masthead
   ───────────────────────────────────────────────────────────── */
nav.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 18px 48px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
}
nav .masthead-left, nav .masthead-right {
  display: flex; align-items: center; gap: 24px;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--grey-1);
}
nav .masthead-right { justify-content: flex-end; }
nav .masthead-brand {
  text-align: center;
}
nav .masthead-brand .logo {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
}
nav .masthead-brand .logo .amp {
  color: var(--gold);
  font-style: italic;
  font-weight: 400;
}
nav .masthead-brand .tagline {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--grey-1);
  margin-top: 4px;
}
nav .pill-link {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  padding: 4px 0;
  transition: color 0.3s ease;
}
nav .pill-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
nav .pill-link:hover { color: var(--gold-dark); }
nav .pill-link:hover::after { transform: scaleX(1); }
nav .pill-link.solid {
  background: var(--ink);
  color: var(--paper);
  padding: 10px 22px;
  border-radius: 0;
  font-weight: 600;
  letter-spacing: 1.5px;
}
nav .pill-link.solid:hover { background: var(--gold-dark); color: var(--paper); }
nav .pill-link.solid::after { display: none; }

/* ─────────────────────────────────────────────────────────────
   COVER — Editorial hero
   ───────────────────────────────────────────────────────────── */
.cover {
  min-height: calc(100vh - 90px);
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 60px 48px 40px;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  border-bottom: 1px solid var(--line);
}

.cover-top {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
  border-bottom: 1px solid var(--grey-4);
  padding-bottom: 24px;
  margin-bottom: 60px;
}
.cover-issue {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--grey-1);
  display: flex; align-items: center; gap: 16px;
}
.cover-issue .rule {
  display: inline-block;
  width: 60px; height: 1px;
  background: var(--ink);
}
.cover-edition {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--gold-dark);
}

.cover-main {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 80px;
  align-items: start;
}

.cover-headline {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 32px;
}
.cover-headline .gold {
  color: var(--gold);
  font-style: italic;
  font-weight: 500;
}
.cover-headline .amp {
  font-style: italic;
  font-weight: 400;
  color: var(--gold);
}

.cover-deck {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 22px;
  line-height: 1.5;
  color: var(--grey-1);
  max-width: 600px;
  margin-bottom: 48px;
}

.cover-byline {
  display: flex; align-items: center; gap: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--grey-1);
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.cover-byline .by {
  color: var(--gold-dark);
  font-weight: 600;
}

.cover-sidebar {
  border-left: 1px solid var(--line);
  padding-left: 48px;
}
.cover-sidebar-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--grey-1);
  margin-bottom: 24px;
}
.cover-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 24px;
}
.cover-stat {
  padding-top: 16px;
  border-top: 2px solid var(--ink);
}
.cover-stat .num {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -0.03em;
}
.cover-stat .num .plus {
  color: var(--gold);
}
.cover-stat .label {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--grey-1);
  margin-top: 8px;
}
.cover-stat .sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--gold-dark);
  margin-top: 4px;
}

.cover-cta {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--paper);
  background: var(--ink);
  padding: 20px 36px;
  text-decoration: none;
  border: 2px solid var(--ink);
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  align-self: start;
  margin-top: 32px;
}
.cover-cta::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: var(--gold);
  transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
}
.cover-cta:hover { color: var(--ink); }
.cover-cta:hover::before { left: 0; }
.cover-cta span { position: relative; z-index: 1; }
.cover-cta .arrow {
  display: inline-block;
  transition: transform 0.4s ease;
  position: relative; z-index: 1;
}
.cover-cta:hover .arrow { transform: translateX(6px); }

.cover-bottom {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  margin-top: 60px;
}
.cover-pill {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ink);
}
.cover-pill .marker {
  width: 10px; height: 10px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--ink);
}
.cover-pill[data-tone="easy"] .marker   { background: var(--ink); border-color: var(--ink); }
.cover-pill[data-tone="medium"] .marker { background: var(--gold); border-color: var(--gold); }
.cover-pill[data-tone="hard"] .marker   { background: var(--white); border-color: var(--ink); }
.cover-pill[data-tone="xperi"] .marker  { background: var(--gold); border-color: var(--ink); }

/* ─────────────────────────────────────────────────────────────
   CONTAINER
   ───────────────────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 48px 120px; }

/* ─────────────────────────────────────────────────────────────
   TOC — Editorial index
   ───────────────────────────────────────────────────────────── */
.toc {
  margin: 100px 0 80px;
  padding: 0;
}
.toc-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 0;
}
.toc-label {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--gold-dark);
  letter-spacing: 1px;
}
.toc-title {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.toc-page {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--grey-1);
}
.toc-list {
  list-style: none;
}
.toc-item {
  display: grid;
  grid-template-columns: 80px 1fr auto auto;
  align-items: baseline;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--grey-4);
  text-decoration: none;
  color: var(--ink);
  transition: all 0.3s ease;
  position: relative;
}
.toc-item:first-child { border-top: 1px solid var(--grey-4); }
.toc-item:hover {
  background: var(--paper-2);
  padding-left: 20px;
  padding-right: 20px;
}
.toc-item .toc-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 28px;
  font-weight: 400;
  color: var(--gold-dark);
  line-height: 1;
}
.toc-item .toc-title {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.toc-item:hover .toc-title { font-style: italic; }
.toc-item .toc-count {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--grey-1);
  white-space: nowrap;
}
.toc-item .toc-arrow {
  font-family: var(--serif);
  font-size: 24px;
  color: var(--gold);
  transition: transform 0.3s ease;
}
.toc-item:hover .toc-arrow { transform: translateX(8px); }

/* ─────────────────────────────────────────────────────────────
   SECTION HEADER — Editorial section opener
   ───────────────────────────────────────────────────────────── */
.section {
  margin-top: 120px;
  scroll-margin-top: 120px;
  page-break-before: always;
}
.section-header {
  margin-bottom: 60px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--ink);
  position: relative;
}
.section-header::before {
  content: '';
  position: absolute;
  bottom: -1px; left: 0;
  width: 80px; height: 3px;
  background: var(--gold);
}
.section-header .sec-num {
  display: flex; align-items: center; gap: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold-dark);
  margin-bottom: 20px;
}
.section-header .sec-num .num-roman {
  font-family: var(--serif);
  font-size: 32px;
  font-style: italic;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: 0;
}
.section-header h2 {
  font-family: var(--serif);
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 800;
  line-height: 1.05;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.section-header h2 .gold {
  color: var(--gold);
  font-style: italic;
  font-weight: 500;
}
.section-header p {
  font-family: var(--serif);
  font-style: italic;
  font-size: 19px;
  line-height: 1.6;
  color: var(--grey-1);
  max-width: 720px;
}
.section-header .sec-rule {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: center;
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--grey-1);
}
.section-header .sec-rule .line {
  height: 1px;
  background: var(--grey-3);
}

/* ─────────────────────────────────────────────────────────────
   Q&A CARDS — Editorial article layout
   ───────────────────────────────────────────────────────────── */
.qa-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 48px;
  padding: 48px 0;
  border-bottom: 1px solid var(--grey-4);
  scroll-margin-top: 100px;
}
.qa-card:first-of-type { border-top: 1px solid var(--grey-4); }

.qa-meta {
  position: sticky;
  top: 120px;
  align-self: start;
}
.qa-meta .q-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 64px;
  font-weight: 400;
  color: var(--gold);
  line-height: 0.9;
  margin-bottom: 8px;
  display: block;
}
.qa-meta .q-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--grey-1);
  display: block;
  margin-bottom: 16px;
}
.qa-meta .q-rule {
  width: 40px; height: 1px;
  background: var(--ink);
  margin: 16px 0;
}
.qa-meta .q-tags {
  display: flex; flex-direction: column; gap: 6px;
}

.qa-body { min-width: 0; }

.qa-question {
  cursor: pointer;
  padding: 0;
  margin-bottom: 24px;
  display: flex; align-items: flex-start; gap: 16px;
  justify-content: space-between;
}
.qa-question h3 {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  letter-spacing: -0.01em;
  flex: 1;
  margin: 0;
}
.qa-toggle {
  flex-shrink: 0;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  background: transparent;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  margin-top: 4px;
  position: relative;
}
.qa-toggle::before, .qa-toggle::after {
  content: '';
  position: absolute;
  background: currentColor;
  transition: transform 0.3s ease;
}
.qa-toggle::before {
  width: 14px; height: 1.5px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.qa-toggle::after {
  width: 1.5px; height: 14px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.qa-card.open .qa-toggle { background: var(--ink); color: var(--paper); }
.qa-card.open .qa-toggle::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }

.qa-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.qa-card.open .qa-answer { max-height: 12000px; }
.qa-answer-inner {
  padding-top: 24px;
  border-top: 1px solid var(--grey-4);
}

.qa-answer p {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 16px;
}
.qa-answer p:last-child { margin-bottom: 0; }
.qa-answer ul, .qa-answer ol {
  padding-left: 24px;
  margin-bottom: 16px;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink-soft);
}
.qa-answer li { margin-bottom: 6px; }
.qa-answer li::marker { color: var(--gold); }
.qa-answer strong {
  font-weight: 700;
  color: var(--ink);
  background: linear-gradient(transparent 65%, rgba(184, 146, 74, 0.25) 65%);
  padding: 0 2px;
}
.qa-answer em { font-style: italic; color: var(--gold-dark); font-weight: 500; }

/* ─────────────────────────────────────────────────────────────
   TAGS
   ───────────────────────────────────────────────────────────── */
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 0;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  margin-right: 6px;
  vertical-align: middle;
}
.tag-easy   { background: var(--ink); color: var(--paper); }
.tag-medium { background: var(--gold); color: var(--paper); border-color: var(--gold); }
.tag-hard   { background: var(--paper); color: var(--ink); border-color: var(--ink); }

.xperi-flag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 0;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: var(--gold);
  color: var(--paper);
  border: 1px solid var(--gold);
  vertical-align: middle;
  margin-right: 6px;
}

/* ─────────────────────────────────────────────────────────────
   CODE BLOCKS
   ───────────────────────────────────────────────────────────── */
.code-wrap {
  margin: 28px 0;
  border: 1px solid var(--ink);
  background: var(--ink);
  position: relative;
  page-break-inside: avoid;
}
.code-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px;
  background: var(--white);
  border-bottom: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--grey-1);
}
.code-header .dots { display: flex; gap: 6px; }
.code-header .dot-c {
  width: 8px; height: 8px;
  border: 1px solid var(--ink);
  background: var(--white);
  display: inline-block;
}
.code-header .dot-c.gold { background: var(--gold); border-color: var(--gold); }
.code-header .lang { color: var(--gold-dark); font-weight: 700; }
.code-header .copy { color: var(--ink); cursor: pointer; }

pre {
  background: transparent;
  padding: 24px 28px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--paper);
}
pre::-webkit-scrollbar { height: 6px; }
pre::-webkit-scrollbar-track { background: var(--ink-soft); }
pre::-webkit-scrollbar-thumb { background: var(--gold); }
code { font-family: var(--mono); font-size: 13.5px; }
.inline-code {
  background: var(--paper-2);
  border: 1px solid var(--grey-4);
  padding: 1px 8px;
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--gold-dark);
  font-weight: 500;
  border-radius: 2px;
}

/* ── Syntax Highlighting (paper-on-ink palette) ── */
.kw { color: #e8c87c; font-weight: 600; }      /* gold-ish for keywords */
.ty { color: #c8c5b8; font-weight: 500; }      /* light grey for types */
.str { color: #d8c89a; }                        /* warm cream for strings */
.cm { color: #6a6a6a; font-style: italic; }     /* dim grey for comments */
.nu { color: #b8924a; }                         /* gold for numbers */
.fn { color: #f4f3ee; font-weight: 500; }        /* paper for functions */

/* ─────────────────────────────────────────────────────────────
   CALLOUT BOXES — Editorial pull-quotes
   ───────────────────────────────────────────────────────────── */
.tip-box, .warn-box, .info-box, .memory-trick {
  margin: 28px 0;
  padding: 24px 28px;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.7;
  position: relative;
  page-break-inside: avoid;
}
.tip-box {
  background: var(--paper-2);
  border-left: 4px solid var(--ink);
  font-style: italic;
  color: var(--ink-soft);
}
.tip-box::before {
  content: '✓ Note';
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--ink);
  font-style: normal;
  font-weight: 600;
  margin-bottom: 8px;
}
.warn-box {
  background: var(--paper);
  border: 1px solid var(--ink);
  border-left-width: 4px;
  color: var(--ink);
}
.warn-box::before {
  content: '⚠ Caution';
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 8px;
}
.info-box {
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
}
.info-box::before {
  content: '★ Insight';
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold-soft);
  font-weight: 600;
  margin-bottom: 8px;
}
.info-box strong { background: linear-gradient(transparent 65%, rgba(184, 146, 74, 0.4) 65%); color: var(--paper); }
.info-box code { color: var(--gold-soft); }
.memory-trick {
  background: var(--paper-2);
  border-top: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  font-style: italic;
  text-align: center;
  padding: 24px 32px;
  color: var(--ink);
}
.memory-trick::before {
  content: '◆ Memory Trick';
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold-dark);
  font-style: normal;
  font-weight: 700;
  margin-bottom: 12px;
}
.memory-trick strong { color: var(--gold-dark); font-weight: 700; font-style: normal; }

/* ─────────────────────────────────────────────────────────────
   TABLES — Editorial data tables
   ───────────────────────────────────────────────────────────── */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14.5px;
  border: 1px solid var(--ink);
  background: var(--paper);
  page-break-inside: avoid;
}
.compare-table th {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--serif);
  font-weight: 600;
  padding: 14px 18px;
  text-align: left;
  font-size: 14px;
  letter-spacing: 0.5px;
  border-right: 1px solid var(--ink-soft);
}
.compare-table th:last-child { border-right: none; }
.compare-table td {
  padding: 14px 18px;
  border-top: 1px solid var(--grey-4);
  border-right: 1px solid var(--grey-4);
  font-family: var(--serif);
  vertical-align: top;
  line-height: 1.6;
  color: var(--ink-soft);
}
.compare-table td:last-child { border-right: none; }
.compare-table tr:nth-child(even) td { background: var(--paper-2); }
.compare-table tr:first-child td { border-top: none; }
.compare-table .yes { color: var(--ink); font-weight: 700; }
.compare-table .yes::before { content: '✓ '; color: var(--gold-dark); }
.compare-table .no { color: var(--grey-1); font-weight: 500; }
.compare-table .no::before { content: '✗ '; color: var(--grey-2); }

/* ─────────────────────────────────────────────────────────────
   CHEAT GRID
   ───────────────────────────────────────────────────────────── */
.cheat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0;
  margin: 40px 0;
  border: 1px solid var(--ink);
  background: var(--paper);
}
.cheat-card {
  padding: 32px 28px;
  border-right: 1px solid var(--grey-4);
  border-bottom: 1px solid var(--grey-4);
  background: var(--paper);
  position: relative;
  transition: background 0.3s ease;
}
.cheat-card:hover { background: var(--paper-2); }
.cheat-card h4 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.cheat-card h4::after {
  content: '';
  display: block;
  width: 30px; height: 2px;
  background: var(--gold);
  margin-top: 10px;
  margin-bottom: 16px;
}
.cheat-card table { width: 100%; font-size: 13px; border-collapse: collapse; }
.cheat-card td {
  padding: 6px 0;
  border-bottom: 1px dotted var(--grey-4);
  font-family: var(--mono);
}
.cheat-card tr:last-child td { border-bottom: none; }
.cheat-card td:last-child { color: var(--gold-dark); font-weight: 600; text-align: right; }

/* ─────────────────────────────────────────────────────────────
   SUBSECTION
   ───────────────────────────────────────────────────────────── */
.subsec {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  padding: 32px 0 12px;
  border-bottom: 1px solid var(--grey-4);
  margin: 40px 0 20px;
  display: flex; align-items: center; gap: 16px;
}
.subsec::before {
  content: '§';
  font-family: var(--serif);
  font-size: 28px;
  color: var(--gold);
  font-style: normal;
  font-weight: 700;
}

/* ─────────────────────────────────────────────────────────────
   FOOTER
   ───────────────────────────────────────────────────────────── */
.footer {
  margin: 100px 0 0;
  padding: 60px 0 40px;
  border-top: 2px solid var(--ink);
  text-align: center;
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: -2px; left: 50%;
  transform: translateX(-50%);
  width: 80px; height: 4px;
  background: var(--gold);
}
.footer .colophon {
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
  color: var(--ink);
  margin-bottom: 12px;
}
.footer .colophon .amp { color: var(--gold); }
.footer .credits {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--grey-1);
  line-height: 1.8;
}
.footer .credits .sep { color: var(--gold); margin: 0 12px; }

/* ─────────────────────────────────────────────────────────────
   HOME / LANDING PAGE
   ───────────────────────────────────────────────────────────── */
.home-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: 80px 0 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.home-card {
  display: block;
  padding: 60px 48px;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
  border-right: 1px solid var(--ink);
  position: relative;
  transition: background 0.4s ease;
  overflow: hidden;
}
.home-card:last-child { border-right: none; }
.home-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 4px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.home-card:hover { background: var(--paper-2); }
.home-card:hover::before { transform: scaleX(1); }
.home-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--gold);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  transition-delay: 0.1s;
}
.home-card:hover::after { transform: scaleY(1); }

.home-card .card-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--gold-dark);
  margin-bottom: 32px;
  display: block;
}
.home-card h3 {
  font-family: var(--serif);
  font-size: 40px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.home-card h3 .gold {
  color: var(--gold);
  font-style: italic;
  font-weight: 500;
}
.home-card .card-deck {
  font-family: var(--serif);
  font-style: italic;
  font-size: 17px;
  line-height: 1.6;
  color: var(--grey-1);
  margin-bottom: 40px;
  max-width: 400px;
}
.home-card .card-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--grey-4);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--grey-1);
}
.home-card .card-meta .meta-item .label {
  display: block;
  color: var(--grey-2);
  margin-bottom: 4px;
}
.home-card .card-meta .meta-item .value {
  color: var(--ink);
  font-weight: 700;
  font-size: 16px;
  font-family: var(--serif);
  letter-spacing: 0;
  text-transform: none;
}
.home-card .card-arrow {
  position: absolute;
  bottom: 32px;
  right: 32px;
  font-family: var(--serif);
  font-size: 32px;
  color: var(--gold);
  transition: transform 0.4s ease;
}
.home-card:hover .card-arrow { transform: translateX(12px) translateY(-4px); }

/* ─────────────────────────────────────────────────────────────
   PRINT
   ───────────────────────────────────────────────────────────── */
@media print {
  body { background: #fff; color: #111; font-size: 11pt; }
  nav.masthead { position: static; }
  .qa-card { break-inside: avoid; page-break-inside: avoid; }
  .qa-answer { max-height: none !important; }
  .qa-toggle { display: none; }
  .section { page-break-before: always; }
  .cover { min-height: auto; padding: 30px 20px; }
  pre, .code-wrap { white-space: pre-wrap; word-break: break-word; background: #f5f5f5; color: #111; }
  pre * { color: #111 !important; }
}

/* ─────────────────────────────────────────────────────────────
   ANIMATIONS — Subtle, award-winning
   ───────────────────────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─────────────────────────────────────────────────────────────
   RESPONSIVE
   ───────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .container { padding: 0 24px 80px; }
  nav.masthead { padding: 16px 24px; grid-template-columns: 1fr auto; }
  nav .masthead-left { display: none; }
  .cover { padding: 40px 24px 32px; }
  .cover-main { grid-template-columns: 1fr; gap: 48px; }
  .cover-sidebar { border-left: none; border-top: 1px solid var(--line); padding-left: 0; padding-top: 32px; }
  .cover-stats { grid-template-columns: 1fr 1fr; }
  .cover-bottom { grid-template-columns: 1fr 1fr; }
  .cover-headline { font-size: 48px; }
  .toc-item { grid-template-columns: 60px 1fr auto; }
  .toc-item .toc-arrow { display: none; }
  .qa-card { grid-template-columns: 1fr; gap: 16px; padding: 32px 0; }
  .qa-meta { position: static; }
  .qa-meta .q-num { font-size: 40px; }
  .qa-question h3 { font-size: 22px; }
  .home-grid { grid-template-columns: 1fr; }
  .home-card { border-right: none; border-bottom: 1px solid var(--ink); padding: 40px 28px; }
  .home-card:last-child { border-bottom: none; }
  .section { margin-top: 80px; }
  .section-header h2 { font-size: 32px; }
}