@import url('https://fonts.bunny.net/css?family=cinzel:400,600|cormorant-garamond:400,400i,500,600|jetbrains-mono:400,500|caveat:400,600|noto-serif-sc:400,500,600&display=swap');

/* ============================================================
   ╔══════════════════════════════════════════════════════════╗
   ║   EMERALD LIBRARY — Royal Academy of Magical Detectives  ║
   ║   Theme v2.0 · Dark Academia · Tiffany-Lamp Aesthetic    ║
   ╚══════════════════════════════════════════════════════════╝
   Vintage Sherlock Holmes library + leather-bound emerald folios.
   Deep emerald walls, brass trim, parchment dossiers, ink type.
   ============================================================ */

/* ---------- Tokens · Emerald Palette ---------- */
:root {
  /* === Emerald Library core palette === */
  --emerald-deep:      #0E3B2E;   /* main body bg, library walls */
  --emerald:           #1A5A44;   /* card frames, hover states */
  --emerald-soft:      #2A7A5E;   /* subtle highlight, mid-greens */
  --brass:             #C9A24C;   /* primary precious-metal accent */
  --brass-bright:      #E2BD66;   /* hover/highlight gold */
  --brass-deep:        #8E6F2C;   /* darker brass for contrast */
  --parchment:         #F4ECD2;   /* card surface — main page */
  --parchment-2:       #EAE0BD;   /* nested elements */
  --parchment-3:       #DBCFA8;   /* deepest parchment */
  --ink:               #1A1410;   /* text on parchment */
  --ink-soft:          #4A3F33;   /* secondary text on parchment */
  --seal-wax:          #8B1A1A;   /* deep wax-seal red — sparingly */

  /* RGB helpers for rgba() composition */
  --emerald-deep-rgb:  14, 59, 46;
  --emerald-rgb:       26, 90, 68;
  --emerald-soft-rgb:  42, 122, 94;
  --brass-rgb:         201, 162, 76;
  --brass-bright-rgb:  226, 189, 102;
  --brass-deep-rgb:    142, 111, 44;
  --parchment-rgb:     244, 236, 210;
  --ink-rgb:           26, 20, 16;
  --seal-wax-rgb:      139, 26, 26;

  /* === Backwards-compat aliases (do NOT remove) === */
  --primary:            var(--ink);
  --primary-soft:       var(--ink-soft);
  --accent:             var(--emerald-soft);
  --paper-bg:           var(--parchment);
  --paper-2:            var(--parchment-2);
  --paper-3:            var(--parchment-3);
  --silver-mist:        #9C9680;
  --silver-mist-text:   #7A7560;
  --seal:               var(--seal-wax);
  --gold:               var(--brass);
  --ribbon:             var(--emerald-soft);

  --ink-deep:           var(--ink);
  --ink-warm:           var(--ink);
  --night-violet:       var(--ink);
  --night-violet-soft:  var(--ink-soft);
  --seal-red:           var(--seal-wax);
  --seal-red-soft:      #A93434;
  --bordeaux:           var(--seal-wax);
  --bordeaux-soft:      #A93434;
  --gold-leaf:          var(--brass);
  --brass-deep-alias:   var(--brass-deep);
  --paper-shadow:       rgba(0,0,0,0.18);
  --paper-shadow-deep:  rgba(0,0,0,0.42);

  /* === Typography === */
  --font-display:  'Cinzel', 'Playfair Display SC', 'Trajan Pro', Georgia, serif;
  --font-headline: 'Cormorant Garamond', 'Cormorant', Georgia, 'Times New Roman', serif;
  --font-body:     'Cormorant Garamond', Georgia, serif;
  --font-cn:       'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', 'Microsoft YaHei', serif;
  --font-mono:     'JetBrains Mono', 'IBM Plex Mono', 'Courier New', monospace;
  --font-hand:     'Caveat', 'Kalam', cursive;

  --radius-sm: 2px;
  --radius-md: 4px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

/* ---------- Body: emerald library walls ---------- */
body {
  background-color: var(--emerald-deep);
  color: var(--parchment-2);
  font-family: var(--font-body);
  font-size: clamp(16px, 2.4vw, 18px);
  line-height: 1.7;
  min-height: 100vh;
  /* Tiffany-lamp glows + dark olive grain noise */
  background-image:
    radial-gradient(ellipse 900px 600px at 12% 8%,  rgba(var(--brass-rgb), 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 1100px 700px at 88% 92%, rgba(var(--brass-rgb), 0.14) 0%, transparent 65%),
    radial-gradient(circle at 50% 50%, rgba(var(--emerald-soft-rgb), 0.10) 0%, transparent 70%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.05  0 0 0 0 0.04  0 0 0 0 0.02  0 0 0 0.18 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-attachment: fixed;
}

/* ---------- Typography ---------- */
h1, .h-display {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--brass-bright);
  line-height: 1.1;
  margin: 0;
  text-transform: uppercase;
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }

h2, .h-headline {
  font-family: var(--font-headline);
  font-weight: 500;
  font-style: italic;
  letter-spacing: 0.04em;
  color: var(--ink);
  margin: 0 0 0.6em;
  font-size: clamp(1.5rem, 2.6vw, 2.05rem);
}

h3 {
  font-family: var(--font-headline);
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--ink);
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  margin: 0 0 0.4em;
}

.cn { font-family: var(--font-cn); }

.mono, code, kbd, .case-no {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  font-weight: 500;
}

.hand {
  font-family: var(--font-hand);
  color: var(--brass-deep);
  font-size: 1.15em;
}

p { margin: 0 0 1em; }

a {
  color: var(--brass);
  text-decoration: none;
  border-bottom: 1px dotted var(--brass);
  transition: color 0.18s, border-color 0.18s;
}
a:hover {
  color: var(--brass-bright);
  border-bottom: 1px solid var(--brass-bright);
}

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

/* ---------- Layout primitives ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 32px);
  position: relative;
}

/* ---------- Masthead — sits on emerald, no card ---------- */
.masthead {
  text-align: center;
  padding: 64px 24px 40px;
  position: relative;
  background: transparent;
  border-bottom: none;
}
.masthead::before, .masthead::after {
  content: '';
  display: block;
  height: 1px;
  background: linear-gradient(to right, transparent 0%, var(--brass) 20%, var(--brass) 80%, transparent 100%);
  position: relative;
}
.masthead::before { margin-bottom: 22px; }
.masthead::after  { margin-top: 22px; }

/* Decorative diamond ✦ overlapping the rules */
.masthead .title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 4.6rem);
  letter-spacing: 0.18em;
  color: var(--brass-bright);
  font-weight: 600;
  text-transform: uppercase;
  text-shadow: 0 2px 0 rgba(0,0,0,0.4), 0 0 28px rgba(var(--brass-rgb), 0.25);
  position: relative;
}
.masthead .title::before, .masthead .title::after {
  content: '✦';
  display: block;
  color: var(--brass);
  font-size: 0.32em;
  letter-spacing: 0;
  margin: 0 auto;
  line-height: 1;
}
.masthead .title::before { margin-bottom: 0.4em; transform: translateY(-26px); }
.masthead .title::after  { margin-top: 0.4em;  transform: translateY(26px); }

.masthead .subtitle {
  font-family: var(--font-headline);
  font-style: italic;
  font-size: 1rem;
  letter-spacing: 0.36em;
  color: var(--parchment-2);
  margin-top: 10px;
  text-transform: uppercase;
  font-variant: small-caps;
}
.masthead .epigraph {
  font-family: var(--font-headline);
  font-style: italic;
  color: var(--parchment-2);
  opacity: 0.85;
  max-width: 580px;
  margin: 22px auto 0;
  font-size: 1.05rem;
  line-height: 1.7;
}
.masthead .epigraph cite {
  display: block;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--brass);
  margin-top: 10px;
  text-transform: uppercase;
}

/* ---------- Card / Dossier ---------- */
.dossier {
  background: var(--parchment);
  color: var(--ink);
  border: 1.5px solid var(--brass);
  padding: clamp(20px, 3vw, 32px) clamp(20px, 4vw, 36px);
  position: relative;
  box-shadow:
    0 2px 0 rgba(255,255,255,0.6) inset,
    0 12px 28px rgba(0,0,0,0.5),
    0 0 0 1px rgba(var(--brass-rgb), 0.4);
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0.06), rgba(0,0,0,0.02)),
    radial-gradient(ellipse at top, rgba(var(--brass-rgb), 0.05), transparent 60%);
  isolation: isolate;
}

/* Brass corner brackets — four L-shapes via pseudo-elements */
.dossier::before,
.dossier::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
  background: transparent;
  -webkit-mask-image: none;
          mask-image: none;
  border: 0;
}
.dossier::before {
  top: 6px;
  left: 6px;
  border-top: 2px solid var(--brass);
  border-left: 2px solid var(--brass);
}
.dossier::after {
  bottom: 6px;
  right: 6px;
  border-bottom: 2px solid var(--brass);
  border-right: 2px solid var(--brass);
  transform: none;
}

/* Ensure dossier text & headings flip to ink */
.dossier h1, .dossier h2, .dossier h3,
.dossier .h-display, .dossier .h-headline { color: var(--ink); }
.dossier p, .dossier li, .dossier label { color: var(--ink-soft); }

/* ---------- Dossier Hero — Tiffany-lamp halo ---------- */
.dossier-hero {
  position: relative;
}
.dossier-hero::before {
  content: '';
  position: absolute;
  inset: -60px -40px;
  z-index: -1;
  background: radial-gradient(ellipse at center, rgba(var(--brass-rgb), 0.18) 0%, transparent 65%);
  filter: blur(20px);
  pointer-events: none;
}

/* Solved variant */
.dossier--solved { position: relative; }
.dossier--solved .seal-stamp {
  position: absolute;
  top: 16px; right: 16px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.32em;
  color: var(--brass-deep);
  border: 2px double var(--brass-deep);
  padding: 8px 16px;
  transform: rotate(-8deg);
  opacity: 0.82;
  mix-blend-mode: multiply;
  pointer-events: none;
  text-transform: uppercase;
  background: rgba(var(--parchment-rgb), 0.4);
}

.dossier-hd {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid rgba(var(--brass-deep), 0.5);
  border-bottom-color: var(--brass-deep);
  padding-bottom: 12px;
  margin-bottom: 22px;
  gap: 16px;
  flex-wrap: wrap;
}
.dossier-hd .case-no {
  font-size: 0.92rem;
  letter-spacing: 0.18em;
  color: var(--ink);
  font-weight: 500;
}
.dossier-hd .meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--brass-deep);
  text-transform: uppercase;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 14px 28px;
  min-height: 48px;
  border: 1.5px solid var(--brass);
  background: var(--parchment);
  color: var(--ink);
  cursor: pointer;
  border-radius: 0;
  transition: all 0.22s ease;
  text-decoration: none;
  position: relative;
  overflow: visible;
}
/* brass corner-tab decorations */
.btn::before, .btn::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--brass);
  pointer-events: none;
  transition: background 0.22s ease;
}
.btn::before {
  top: -1px; left: -1px;
  clip-path: polygon(0 0, 100% 0, 0 100%);
}
.btn::after {
  bottom: -1px; right: -1px;
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
}
.btn:hover {
  background: var(--emerald);
  color: var(--parchment);
  border-color: var(--brass-bright);
}
.btn:hover::before, .btn:hover::after { background: var(--brass-bright); }

.btn--primary {
  background: var(--emerald-deep);
  color: var(--brass);
  border-color: var(--brass);
}
.btn--primary:hover {
  background: var(--brass);
  color: var(--emerald-deep);
  border-color: var(--brass-bright);
}
.btn--primary:hover::before, .btn--primary:hover::after { background: var(--emerald-deep); }

.btn--seal {
  background: var(--seal-wax);
  color: var(--parchment);
  border-color: var(--seal-wax);
}
.btn--seal::before, .btn--seal::after { background: var(--parchment); }
.btn--seal:hover {
  background: var(--ink);
  border-color: var(--ink);
}

.btn--ghost {
  background: transparent;
  color: var(--brass);
  border-color: var(--brass);
}
.btn--ghost::before, .btn--ghost::after { background: var(--brass); }
.btn--ghost:hover {
  background: var(--brass);
  color: var(--emerald-deep);
}

/* ---------- Tags / Badges ---------- */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  padding: 3px 10px;
  border: 1px solid var(--brass);
  background: var(--parchment-2);
  text-transform: uppercase;
  color: var(--ink);
}
.tag--red {
  color: var(--seal-wax);
  border-color: var(--seal-wax);
  background: rgba(var(--seal-wax-rgb), 0.06);
}
.tag--violet {
  color: var(--emerald);
  border-color: var(--emerald);
  background: rgba(var(--emerald-rgb), 0.08);
}
.tag--silver {
  color: var(--brass-deep);
  border-color: var(--brass-deep);
}

/* ---------- Difficulty stars ---------- */
.diff {
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--brass);
}

/* ---------- Mic button ---------- */
.mic-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--parchment-2);
  border: 1.5px solid var(--brass);
  color: var(--brass);
  cursor: pointer;
  transition: all 0.22s;
}
.mic-btn:hover {
  background: var(--brass);
  color: var(--emerald-deep);
  border-color: var(--brass-bright);
}
.mic-btn.recording {
  background: var(--brass-bright);
  color: var(--ink);
  border-color: var(--brass-deep);
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(var(--brass-deep-rgb), 0.55); }
  50%      { box-shadow: 0 0 0 14px rgba(var(--brass-deep-rgb), 0); }
}

/* ---------- Animations ---------- */
@keyframes typewriter-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
.typewriter span {
  opacity: 0;
  animation: typewriter-fade 0.001s forwards;
}

@keyframes seal-drop {
  0%   { transform: translate(40px,-60px) rotate(45deg) scale(2); opacity: 0; }
  60%  { transform: translate(0,0) rotate(-8deg) scale(1.15); opacity: 1; }
  80%  { transform: translate(0,0) rotate(-8deg) scale(0.95); }
  100% { transform: translate(0,0) rotate(-8deg) scale(1); opacity: 0.82; }
}
.seal-drop-anim { animation: seal-drop 0.8s cubic-bezier(.7,-0.2,.3,1.4) forwards; }

@keyframes page-enter {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.page-enter { animation: page-enter 0.5s ease-out both; }

.stagger > * { animation: page-enter 0.5s ease-out both; }
.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.18s; }
.stagger > *:nth-child(3) { animation-delay: 0.31s; }
.stagger > *:nth-child(4) { animation-delay: 0.44s; }
.stagger > *:nth-child(5) { animation-delay: 0.57s; }
.stagger > *:nth-child(6) { animation-delay: 0.70s; }

/* ---------- Editorial 2-col ---------- */
.editorial-grid {
  display: grid;
  grid-template-columns: minmax(220px, 280px) 1fr;
  gap: 32px;
  align-items: start;
}
@media (max-width: 820px) {
  .editorial-grid { grid-template-columns: 1fr; }
}

/* ---------- Case log ---------- */
.case-log {
  border-right: 1px solid var(--brass);
  padding-right: 24px;
}
.case-log h3 {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brass-deep);
  border-bottom: 1px solid var(--brass);
  padding-bottom: 8px;
  margin-bottom: 14px;
}
.case-log ul { list-style: none; padding: 0; margin: 0 0 22px; }
.case-log li {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  padding: 5px 0;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}
.case-log li.solved {
  color: var(--ink-soft);
  text-decoration: line-through;
  opacity: 0.75;
}
.case-log li.active {
  color: var(--brass-bright);
  font-weight: 700;
  text-shadow: 0 1px 0 rgba(0,0,0,0.3);
}
.case-log li.active::before {
  content: '▶';
  color: var(--brass-bright);
  font-weight: 700;
}
.case-log li.pending { color: var(--ink); }
.case-log li.pending::before { content: '◇'; color: var(--brass); }
.case-log li.solved::before { content: '✓'; color: var(--emerald-soft); }

/* When case-log sits on parchment dossier, swap colors */
.dossier .case-log h3 { color: var(--brass-deep); }
.dossier .case-log li { color: var(--ink); }

/* ---------- Tab bar (bottom) ---------- */
.tabbar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--emerald-deep);
  color: var(--parchment);
  display: flex;
  border-top: 3px solid var(--brass);
  z-index: 30;
  box-shadow: 0 -8px 24px rgba(0,0,0,0.4);
}
.tabbar a {
  flex: 1;
  text-align: center;
  padding: 14px 8px;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--parchment-2);
  border-bottom: none;
  border-right: 1px solid rgba(var(--brass-rgb), 0.25);
  min-height: 52px;
  position: relative;
  transition: all 0.2s;
}
.tabbar a:last-child { border-right: none; }
.tabbar a:hover {
  background: var(--emerald);
  color: var(--brass-bright);
}
.tabbar a.active {
  background: var(--brass);
  color: var(--emerald-deep);
}
.tabbar a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: -7px;
  height: 4px;
  background: var(--brass);
  box-shadow: 0 2px 0 var(--brass-deep);
}

main { padding-bottom: 90px; }

/* ---------- Forms ---------- */
input[type="text"], textarea, .input {
  width: 100%;
  background: var(--parchment-2);
  border: 1.5px solid var(--brass);
  border-radius: 0;
  padding: 12px 14px;
  font-family: var(--font-cn);
  font-size: 17px;
  color: var(--ink);
  resize: vertical;
  transition: all 0.2s;
}
input[type="text"]:focus, textarea:focus, .input:focus {
  outline: 2px solid var(--brass-bright);
  outline-offset: 1px;
  border-color: var(--brass-bright);
  background: var(--parchment);
  color: var(--ink);
}

label.field-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brass-deep);
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
}

/* ---------- Mentor talk ---------- */
.mentor-talk {
  font-family: var(--font-cn);
  font-size: 1.06rem;
  line-height: 1.85;
  background: var(--parchment-3);
  border-left: 4px solid var(--brass-deep);
  padding: 20px 24px;
  margin: 20px 0;
  position: relative;
  color: var(--ink);
}
.mentor-talk::before {
  content: '✒  首席侦探导师';
  position: absolute;
  top: -11px; left: 18px;
  background: var(--parchment-3);
  padding: 0 10px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--brass-deep);
  text-transform: uppercase;
  font-weight: 500;
}

.aside-margin {
  font-family: var(--font-hand);
  color: var(--brass-deep);
  font-size: 1.5rem;
  line-height: 1.3;
  transform: rotate(-2deg);
  padding: 8px 0;
}

/* ---------- Avatar plate ---------- */
.avatar-plate {
  text-align: center;
  padding: 14px;
}
.avatar-plate svg {
  width: 100%;
  max-width: 220px;
  height: auto;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.25));
}
.avatar-plate .name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.65rem;
  letter-spacing: 0.14em;
  color: var(--ink);
  margin-top: 10px;
  text-transform: uppercase;
}
.avatar-plate .rank {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  color: var(--brass-deep);
  text-transform: uppercase;
  margin-top: 4px;
  font-weight: 500;
}

.progress {
  height: 8px;
  background: var(--parchment-3);
  border: 1px solid var(--brass-deep);
  position: relative;
  margin: 10px 0 4px;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(to right, var(--brass-deep), var(--brass), var(--brass-bright));
}

/* ---------- Countdown — the centerpiece ---------- */
.countdown {
  text-align: center;
  padding: 24px 18px;
  border: 3px double var(--brass);
  background: var(--emerald-deep);
  position: relative;
  box-shadow: inset 0 0 24px rgba(0,0,0,0.4), 0 0 0 1px rgba(var(--brass-rgb), 0.3);
}
.countdown::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(var(--brass-rgb), 0.4);
  pointer-events: none;
}
.countdown .num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(3.5rem, 8vw, 6rem);
  color: var(--brass-bright);
  line-height: 1;
  text-shadow: 0 2px 0 rgba(0,0,0,0.5), 0 0 24px rgba(var(--brass-rgb), 0.4);
  letter-spacing: 0.04em;
}
.countdown .label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--parchment-2);
  margin-top: 10px;
  font-weight: 500;
}

/* ---------- Dividers ---------- */
.divider-rule {
  border: 0;
  height: 1px;
  background: var(--brass);
  margin: 32px 0;
  position: relative;
}
.divider-rule::after {
  content: '✦';
  position: absolute;
  top: -11px; left: 50%;
  transform: translateX(-50%);
  background: var(--parchment);
  padding: 0 14px;
  color: var(--brass-bright);
  font-size: 1.05rem;
}
/* When divider sits on emerald body */
body > .divider-rule::after,
.masthead + .divider-rule::after {
  background: var(--emerald-deep);
}

/* Vine rule — three brass diamonds with thin lines */
.vine-rule {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 32px 0;
  color: var(--brass);
  font-size: 0.85rem;
  letter-spacing: 0.4em;
}
.vine-rule::before,
.vine-rule::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--brass) 30%, var(--brass) 70%, transparent);
  max-width: 200px;
}
.vine-rule .glyph,
.vine-rule:empty::before { /* fallback */ }
.vine-rule::after { background: linear-gradient(to right, transparent, var(--brass) 30%, var(--brass) 70%, transparent); }

/* If .vine-rule has no inner content, give it default ✦ ✦ ✦ */
.vine-rule:empty {
  height: auto;
}
.vine-rule:empty::before {
  content: '✦  ✦  ✦';
  flex: none;
  background: none;
  height: auto;
  color: var(--brass-bright);
  letter-spacing: 0.5em;
}
.vine-rule:empty::after { display: none; }

/* ---------- Dropcap ---------- */
.dropcap::first-letter {
  float: left;
  font-family: var(--font-display);
  font-size: 4.2em;
  line-height: 0.85;
  color: var(--brass-deep);
  padding: 6px 10px 0 0;
  font-weight: 600;
}

/* ---------- Utility ---------- */
.text-c { text-align: center; }
.mt-s { margin-top: 12px; }
.mt-m { margin-top: 24px; }
.mt-l { margin-top: 40px; }
.mb-s { margin-bottom: 12px; }
.mb-m { margin-bottom: 24px; }
.mb-l { margin-bottom: 40px; }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 768px) { .grid-2 { grid-template-columns: 1fr; } }

.grid-home {
  display: grid;
  grid-template-columns: minmax(240px, 300px) 1fr;
  gap: 32px;
  align-items: start;
}
@media (max-width: 768px) {
  .grid-home { grid-template-columns: 1fr; gap: 20px; }
}

@media (max-width: 1024px) and (orientation: portrait) {
  .grid-home { grid-template-columns: 1fr; }
}

/* ---------- Mobile 480px ---------- */
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .masthead { padding: 36px 16px 24px; }
  .masthead .title::before, .masthead .title::after { display: none; }
  .dossier { padding: 20px 16px; }
  .dossier::before, .dossier::after { display: none; }
  .grid-2 { gap: 16px; }
  .btn {
    padding: 12px 18px;
    font-size: 0.82rem;
    letter-spacing: 0.14em;
  }
  .tabbar a {
    font-size: 0.66rem;
    letter-spacing: 0.1em;
    padding: 10px 4px;
  }
  .masthead .subtitle { letter-spacing: 0.18em; font-size: 0.85rem; }
  .countdown .num { font-size: clamp(2.8rem, 11vw, 4.2rem); }
}

/* ---------- Wide desktop 1280px+ ---------- */
@media (min-width: 1280px) {
  .tabbar {
    max-width: 1200px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 4px 4px 0 0;
  }
}

/* ---------- KaTeX ---------- */
.katex { font-size: 1.08em !important; }
.dossier .katex { color: var(--ink); }

/* ---------- Focus ring (a11y) ---------- */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.tabbar a:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--brass-bright);
  outline-offset: 2px;
}

/* ---------- Reduced motion (a11y) ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- End of Emerald Library theme ---------- */