/* CastleEarly.com — main stylesheet */
:root {
  --paper: #faf7f0;
  --paper-2: #f2ede1;
  --ink: #1f1c17;
  --ink-soft: #57514a;
  --line: #e2dccd;
  --accent: #2f5d50;
  --accent-ink: #ffffff;
  --brass: #b8862b;
  --light-sq: #f0ecdc;
  --dark-sq: #5e8d6e;
  --hl: rgba(236, 196, 82, 0.52);
  --good: #2f7d4f;
  --bad: #b23b3b;
  --radius: 12px;
  --max: 1200px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --card: #ffffff;
  --accent-hover: #244a40;
  --tag-w-bg: #fff7e6; --tag-w-ink: #8a6116;
  --good-bg: #f1f8f3; --bad-bg: #fbf1f1; --info-bg: #f2f6fe;
  color-scheme: light;
}
/* Dark theme (default on play pages; visitors can switch with the sun/moon button) */
:root[data-theme="dark"] {
  --paper: #262421;
  --paper-2: #312e2b;
  --card: #2d2a27;
  --ink: #f1efe9;
  --ink-soft: #b6b2aa;
  --line: #413e3a;
  --accent: #6fb36a;
  --accent-hover: #83c47e;
  --accent-ink: #13220a;
  --brass: #e8b04a;
  --good: #6cc486; --bad: #e57373;
  --tag-w-bg: #3e3523; --tag-w-ink: #f2d390;
  --good-bg: #213529; --bad-bg: #3b2526; --info-bg: #212f47;
  color-scheme: dark;
}
:root[data-theme="dark"] .tag.black { background: #111; color: #f1efe9; box-shadow: inset 0 0 0 1px var(--line); }
:root[data-theme="dark"] .card:hover, :root[data-theme="dark"] .feature:hover { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35); }
:root[data-theme="dark"] .nav-dd .dd { box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45); }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--brass); }

h1, h2, h3 { font-family: var(--serif); line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0.2em 0 0.4em; }
h2 { font-size: clamp(1.45rem, 3vw, 1.9rem); margin: 2em 0 0.5em; }
h3 { font-size: 1.2rem; margin: 1.6em 0 0.4em; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.prose { max-width: 720px; }
.prose p, .prose li { color: var(--ink); }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky; top: 0; z-index: 10;
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 62px; }
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--serif); font-weight: 700; font-size: 1.3rem;
  color: var(--ink); text-decoration: none;
}
.logo svg { width: 28px; height: 28px; }
.nav { display: flex; gap: 18px; flex-wrap: wrap; }
.nav a { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--accent); }

/* Hero */
.hero { padding: 56px 0 40px; display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; }
.hero p.lead { font-size: 1.2rem; color: var(--ink-soft); max-width: 34em; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.78rem; font-weight: 700; color: var(--brass); }
.btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink);
  padding: 12px 22px; border-radius: 999px; text-decoration: none; font-weight: 600;
  border: 0; cursor: pointer; font-size: 1rem;
}
.btn:hover { background: var(--accent-hover); color: var(--accent-ink); }
.btn.ghost { background: transparent; color: var(--accent); box-shadow: inset 0 0 0 2px var(--accent); }
.btn.ghost:hover { background: var(--accent); color: var(--accent-ink); }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; margin: 20px 0 40px; }
.card {
  display: block; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; text-decoration: none; color: var(--ink); transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(31, 28, 23, 0.08); color: var(--ink); }
.card h3 { margin: 0 0 6px; }
.card p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }
.tag { display: inline-block; font-size: 0.75rem; font-weight: 700; padding: 2px 10px; border-radius: 999px; background: var(--paper-2); color: var(--ink-soft); margin-bottom: 10px; }
.tag.white { background: var(--tag-w-bg); color: var(--tag-w-ink); }
.tag.black { background: #2b2722; color: #f2ede1; }
.card.soon { opacity: 0.6; pointer-events: none; }

/* Breadcrumbs */
.crumbs { font-size: 0.88rem; color: var(--ink-soft); margin-top: 24px; }
.crumbs a { color: var(--ink-soft); }

/* Article layout */
.article-head { padding: 8px 0 8px; }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--ink-soft); font-size: 0.92rem; }
.key-facts { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin: 20px 0; }
.key-facts dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 0; }
.key-facts dt { font-weight: 700; color: var(--ink-soft); }
.key-facts dd { margin: 0; }
.callout { border-left: 4px solid var(--brass); background: var(--paper-2); padding: 14px 18px; border-radius: 0 var(--radius) var(--radius) 0; margin: 20px 0; }
.callout.warn { border-left-color: var(--bad); }

/* ====== Trainer / board ====== */
.trainer {
  display: grid; grid-template-columns: minmax(0, 480px) minmax(0, 1fr); gap: 28px;
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px; margin: 24px 0 32px;
}
.board-wrap { width: 100%; }
.board {
  position: relative; width: 100%; aspect-ratio: 1 / 1;
  display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr);
  border-radius: 6px; overflow: hidden; user-select: none; -webkit-user-select: none;
  box-shadow: 0 6px 24px rgba(31, 28, 23, 0.18);
  touch-action: manipulation;
}
.sq { position: relative; display: flex; align-items: center; justify-content: center; cursor: default; }
.sq.l { background: var(--light-sq); }
.sq.d { background: var(--dark-sq); }
.sq.last::after { content: ""; position: absolute; inset: 0; background: var(--hl); }
.sq.sel::after { content: ""; position: absolute; inset: 0; background: var(--hl); }
.sq.hint::before { content: ""; position: absolute; inset: 6%; border: 3px dashed var(--accent); border-radius: 50%; z-index: 2; }
.sq.wrong { animation: shake .35s; }
@keyframes shake { 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }
.sq .coord { position: absolute; font-size: 10px; font-weight: 700; line-height: 1; opacity: 0.8; z-index: 1; }
.sq .coord.f { right: 3px; bottom: 2px; }
.sq .coord.r { left: 3px; top: 2px; }
.sq.l .coord { color: var(--dark-sq); }
.sq.d .coord { color: var(--light-sq); }
.trainer.practice .sq { cursor: pointer; }

.pc { position: relative; z-index: 3; width: 100%; height: 100%; pointer-events: none; }
.pc svg { width: 100%; height: 100%; display: block; }

.controls { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.controls button {
  flex: 1 1 0; min-width: 44px; padding: 10px 0; border-radius: 10px; border: 1px solid var(--line);
  background: var(--paper); font-size: 1.05rem; cursor: pointer; color: var(--ink);
}
.controls button:hover:not(:disabled) { background: var(--paper-2); }
.controls button:disabled { opacity: 0.4; cursor: default; }

.side h3 { margin-top: 0; }
.mode-tabs { display: inline-flex; background: var(--paper-2); border-radius: 999px; padding: 4px; margin-bottom: 14px; }
.mode-tabs button { border: 0; background: transparent; padding: 7px 16px; border-radius: 999px; font-weight: 600; cursor: pointer; color: var(--ink-soft); font-size: 0.92rem; }
.mode-tabs button[aria-pressed="true"] { background: var(--card); color: var(--accent); box-shadow: 0 1px 3px rgba(0,0,0,.1); }
.note {
  min-height: 7.5em; background: var(--paper); border-radius: 10px; padding: 14px 16px; margin-bottom: 14px;
  border: 1px solid var(--line);
}
.note strong { color: var(--accent); }
.note.ok { border-color: var(--good); }
.note.err { border-color: var(--bad); }
.movelist { display: flex; flex-wrap: wrap; gap: 4px 2px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.92rem; }
.movelist .pair { white-space: nowrap; display: inline-flex; }
.movelist .num { color: var(--ink-soft); padding: 3px 2px 3px 6px; }
.movelist button { border: 0; background: transparent; padding: 3px 6px; border-radius: 6px; cursor: pointer; font: inherit; color: var(--ink); }
.movelist button:hover { background: var(--paper-2); }
.movelist button.cur { background: var(--accent); color: var(--accent-ink); }
.progress { font-size: 0.9rem; color: var(--ink-soft); margin-top: 10px; }

/* FAQ */
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 10px 0; }
.faq summary { font-weight: 600; cursor: pointer; }

/* Ad slots — reserved space so ads do not shift the layout */
.ad-slot { min-height: 100px; margin: 28px 0; }

/* Footer */
.site-footer { margin-top: 64px; border-top: 1px solid var(--line); background: var(--paper-2); font-size: 0.92rem; color: var(--ink-soft); }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; padding: 28px 16px; }
.site-footer a { color: var(--ink-soft); }
.site-footer .wrap > div { display: flex; flex-wrap: wrap; gap: 6px 16px; min-width: 0; }

/* Responsive */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 32px; }
  .trainer { grid-template-columns: 1fr; padding: 14px; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .nav { gap: 12px; }
  .nav a { font-size: 0.88rem; }
  .site-header .wrap { flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
  .key-facts dl { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ====== Play board ====== */
.pb { --pb-light: #f0ecdc; --pb-dark: #5e8d6e; --pb-last: rgba(236, 196, 82, 0.52); }
.pb-setup { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; margin-bottom: 14px; }
.pb-seg { display: inline-flex; background: var(--paper-2); border-radius: 999px; padding: 4px; }
.pb-seg button { border: 0; background: transparent; padding: 9px 16px; border-radius: 999px; font-weight: 600; font-size: 0.95rem; cursor: pointer; color: var(--ink-soft); }
.pb-seg button[aria-pressed="true"] { background: var(--card); color: var(--accent); box-shadow: 0 1px 4px rgba(0,0,0,.12); }
.pb-opts { display: flex; gap: 12px; flex-wrap: wrap; }
.pb-field { display: inline-flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--ink-soft); font-weight: 600; }
.pb-field select { font: inherit; font-weight: 600; color: var(--ink); padding: 7px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); }

.pb-main { display: grid; grid-template-columns: minmax(0, 560px) minmax(220px, 1fr); gap: 20px; align-items: start; }
.pb-left { min-width: 0; }
.pb-board {
  position: relative; width: 100%; max-width: 100%; aspect-ratio: 1 / 1;
  display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr);
  border-radius: 4px; overflow: hidden; user-select: none; -webkit-user-select: none;
  touch-action: none; box-shadow: 0 6px 24px rgba(31, 28, 23, 0.18);
}
.pb-sq { position: relative; display: flex; align-items: center; justify-content: center; }
.pb-sq.l { background: var(--pb-light); }
.pb-sq.d { background: var(--pb-dark); }
.pb-sq.last::before, .pb-sq.sel::before { content: ""; position: absolute; inset: 0; background: var(--pb-last); }
.pb-sq.check::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle, rgba(255,40,40,.9) 0%, rgba(230,20,20,.55) 40%, rgba(169,0,0,0) 72%); }
.pb-sq.hint::before { content: ""; position: absolute; inset: 0; background: rgba(66, 135, 245, 0.45); }
.pb-sq.dot::after { content: ""; position: absolute; width: 32%; height: 32%; border-radius: 50%; background: rgba(0, 0, 0, 0.16); z-index: 3; pointer-events: none; }
.pb-sq.cap::after { content: ""; position: absolute; inset: 0; border-radius: 50%; box-shadow: inset 0 0 0 6px rgba(0, 0, 0, 0.16); z-index: 3; pointer-events: none; }
.pb-sq.pb-hover { box-shadow: inset 0 0 0 4px rgba(255, 255, 255, 0.75); }
.pb-co { position: absolute; font-size: clamp(9px, 1.6vw, 12px); font-weight: 700; line-height: 1; z-index: 1; pointer-events: none; }
.pb-co.f { right: 3px; bottom: 2px; }
.pb-co.r { left: 3px; top: 3px; }
.pb-sq.l .pb-co { color: var(--pb-dark); }
.pb-sq.d .pb-co { color: var(--pb-light); }
.pb-pc { position: relative; z-index: 2; width: 100%; height: 100%; cursor: grab; }
.pb-pc svg, .pb-ghost svg, .pb-cap svg, .pb-avatar svg, .pb-promo-btn svg { width: 100%; height: 100%; display: block; }
.pb-pc.pb-lifted { opacity: 0.3; }
.pb-ghost { position: fixed; left: 0; top: 0; z-index: 1000; pointer-events: none; cursor: grabbing; filter: drop-shadow(0 6px 6px rgba(0,0,0,.3)); }

.pb-player { display: flex; align-items: center; gap: 10px; padding: 8px 2px; min-height: 48px; }
.pb-avatar { width: 34px; height: 34px; border-radius: 6px; background: var(--paper-2); padding: 3px; flex: none; }
.pb-name { font-weight: 700; font-size: 0.95rem; }
.pb-turn .pb-avatar { box-shadow: 0 0 0 2px var(--accent); }
.pb-caps { display: flex; align-items: center; flex-wrap: wrap; margin-left: auto; }
.pb-cap { width: 20px; height: 20px; margin-left: -5px; }
.pb-diff { font-size: 0.85rem; font-weight: 700; color: var(--ink-soft); margin-left: 6px; }
.pb-dots { font-weight: 500; color: var(--ink-soft); font-size: 0.85rem; }
.pb-dots::after { content: "…"; animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: 0.2; } }

.pb-side { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.pb-status { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; min-height: 64px; }
.pb-status.good { border-color: var(--good); background: var(--good-bg); }
.pb-status.bad { border-color: var(--bad); background: var(--bad-bg); }
.pb-status.info { border-color: #4287f5; background: var(--info-bg); }
.pb-warn { color: var(--bad); }
.pb-moves {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px;
  height: 220px; overflow-y: auto; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.92rem;
  display: grid; grid-template-columns: 1fr; align-content: start; gap: 2px;
}
.pb-mv { display: grid; grid-template-columns: 2.6em 1fr 1fr; padding: 2px 4px; border-radius: 4px; }
.pb-mv:nth-child(odd) { background: var(--paper); }
.pb-mn { color: var(--ink-soft); }
.pb-empty { color: var(--ink-soft); font-family: var(--sans); }
.pb-tools { display: flex; flex-wrap: wrap; gap: 8px; }
.pb-btn { flex: 1 1 auto; border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 10px 12px; font-weight: 600; font-size: 0.92rem; cursor: pointer; color: var(--ink); }
.pb-btn:hover:not(:disabled) { background: var(--paper-2); }
.pb-btn:disabled { opacity: 0.45; cursor: default; }
.pb-btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.pb-btn.primary:hover { background: var(--accent-hover); }
.pb-btn:focus-visible, .pb-seg button:focus-visible { outline: 3px solid var(--brass); outline-offset: 2px; }

.pb-overlay { position: absolute; inset: 0; z-index: 20; display: flex; align-items: center; justify-content: center; background: rgba(20, 18, 15, 0.45); grid-column: 1 / -1; grid-row: 1 / -1; }
.pb-overlay[hidden], [hidden] { display: none !important; }
.pb-card { background: var(--card); border-radius: 14px; padding: 20px 22px; text-align: center; box-shadow: 0 12px 40px rgba(0,0,0,.3); max-width: 86%; }
.pb-card h3 { margin: 0 0 6px; font-size: 1.5rem; }
.pb-card p { margin: 0 0 14px; color: var(--ink-soft); }
.pb-card-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.pb-promo { display: flex; gap: 6px; }
.pb-promo-btn { width: 64px; height: 64px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); cursor: pointer; padding: 4px; }
.pb-promo-btn:hover { background: var(--pb-light); }

.playboard.compact .pb-main { grid-template-columns: minmax(0, 440px) minmax(200px, 1fr); }

@media (max-width: 860px) {
  .pb-main, .playboard.compact .pb-main { grid-template-columns: 1fr; }
  .pb-moves { height: 140px; }
}

/* ====== Header menu ====== */
.nav { align-items: center; }
.nav > a, .nav-dd > a { padding: 8px 4px; }
.nav-dd { position: relative; }
.nav-dd .caret { font-size: 0.7em; margin-left: 4px; }
.nav-dd .dd {
  position: absolute; top: 100%; left: -12px; min-width: 200px; background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 6px; box-shadow: 0 12px 30px rgba(31, 28, 23, 0.12);
  display: none; flex-direction: column; z-index: 50;
}
.nav-dd:hover .dd, .nav-dd:focus-within .dd { display: flex; }
.nav-dd .dd a { padding: 9px 12px; border-radius: 8px; color: var(--ink); text-decoration: none; font-weight: 500; font-size: 0.95rem; }
.nav-dd .dd a:hover { background: var(--paper-2); color: var(--accent); }
.menu-btn { display: none; width: 42px; height: 42px; border: 0; background: transparent; cursor: pointer; padding: 10px; border-radius: 8px; }
.menu-btn span { display: block; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; }
.nav a:focus-visible, .menu-btn:focus-visible { outline: 3px solid var(--brass); outline-offset: 2px; border-radius: 6px; }

@media (max-width: 760px) {
  .site-header .wrap { flex-wrap: wrap; }
  .menu-btn { display: block; }
  .nav { display: none; width: 100%; flex-direction: column; align-items: stretch; gap: 0; padding: 4px 0 12px; }
  .nav.open { display: flex; }
  .nav > a, .nav-dd > a { display: block; padding: 12px 4px; border-top: 1px solid var(--line); font-size: 1rem; }
  .nav-dd .dd { position: static; display: flex; border: 0; box-shadow: none; padding: 0 0 6px 12px; min-width: 0; }
  .nav-dd .caret { display: none; }
}

/* ====== Homepage ====== */
.home-hero { padding: 24px 0 8px; }
.home-hero h1 { font-size: clamp(1.7rem, 4vw, 2.5rem); margin: 0 0 4px; }
.home-hero .sub { color: var(--ink-soft); margin: 0 0 18px; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin: 20px 0 8px; }
.feature { display: flex; flex-direction: column; gap: 8px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; text-decoration: none; color: var(--ink); transition: transform .15s, box-shadow .15s; }
.feature:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(31, 28, 23, 0.08); color: var(--ink); }
.feature .icon { width: 44px; height: 44px; }
.feature h3 { margin: 0; }
.feature p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }
.feature .go { margin-top: auto; color: var(--accent); font-weight: 700; font-size: 0.92rem; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

/* puzzle list */
.puzzle-block { margin: 12px 0 40px; }
.puzzle-block h2 { margin-top: 1.4em; }

/* ====== Theme switch ====== */
.hdr-actions { display: flex; align-items: center; gap: 4px; }
.theme-btn { width: 40px; height: 40px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; display: inline-flex; align-items: center; justify-content: center; padding: 0; }
.theme-btn:hover { border-color: var(--accent); color: var(--accent); }
.theme-btn:focus-visible { outline: 3px solid var(--brass); outline-offset: 2px; }
.theme-btn svg { width: 20px; height: 20px; }
.theme-btn .moon { display: none; }
:root[data-theme="dark"] .theme-btn .sun { display: none; }
:root[data-theme="dark"] .theme-btn .moon { display: block; }
.logo .lg-main { fill: var(--accent); }
.logo .lg-door { fill: var(--brass); }
@media (max-width: 760px) { .nav { order: 3; } .hdr-actions { margin-left: auto; } }

/* ====== Motion & creative touches (all lightweight CSS; disabled for "reduce motion") ====== */

/* Board entrance: pieces drop in row by row */
.pb-intro .pb-pc { animation: pc-drop 0.5s cubic-bezier(.2,.9,.3,1.25) both; }
@keyframes pc-drop { from { transform: translateY(-40%) scale(.85); opacity: 0; } to { transform: none; opacity: 1; } }

/* Win confetti + game-over card pop */
.pb-confetti { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 30; pointer-events: none; grid-column: 1 / -1; grid-row: 1 / -1; }
.pb-overlay:not([hidden]) .pb-card { animation: card-pop .35s cubic-bezier(.2,.9,.3,1.3) both; }
@keyframes card-pop { from { transform: scale(.8) translateY(10px); opacity: 0; } to { transform: none; opacity: 1; } }

/* 3D headline with a moving shine */
:root { --x1: #1d3d34; --x2: #15302a; }
:root[data-theme="dark"] { --x1: #4f7a2a; --x2: #34561a; }
.hero-3d { position: relative; display: inline-block; letter-spacing: -0.02em;
  text-shadow: 1px 1px 0 var(--x1), 2px 2px 0 var(--x1), 3px 3px 0 var(--x2), 4px 4px 0 var(--x2), 6px 9px 14px rgba(0,0,0,.28); }
.hero-3d::after {
  content: attr(data-text); position: absolute; inset: 0; pointer-events: none; text-shadow: none;
  background: linear-gradient(105deg, transparent 38%, rgba(255,255,255,.75) 48%, rgba(255,255,255,0) 58%) no-repeat;
  background-size: 250% 100%; background-position: 150% 0;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shine 5s ease-in-out 1s infinite;
}
@keyframes shine { 0% { background-position: 150% 0; } 35%, 100% { background-position: -60% 0; } }
.hero-3d .hl { color: var(--accent); }

/* Hero background: faint chessboard squares that slowly drift */
.home-hero { position: relative; isolation: isolate; }
.home-hero::before {
  content: ""; position: absolute; z-index: -1; left: -40px; right: -40px; top: -24px; height: 240px; pointer-events: none;
  background-image: repeating-conic-gradient(var(--accent) 0 25%, transparent 0 50%);
  background-size: 48px 48px; opacity: 0.07;
  -webkit-mask-image: radial-gradient(ellipse 60% 80% at 30% 20%, #000 0%, transparent 70%);
  mask-image: radial-gradient(ellipse 60% 80% at 30% 20%, #000 0%, transparent 70%);
  animation: drift 40s linear infinite;
}
:root[data-theme="dark"] .home-hero::before { opacity: 0.1; }
@keyframes drift { to { background-position: 96px 48px; } }

/* Logo: the king and rook castle every few seconds */
.logo svg.castle-logo { width: 40px; height: 28px; overflow: visible; }
.castle-logo .lg-rook { fill: var(--accent); animation: lg-rook 7s ease-in-out 1.5s infinite; }
.castle-logo .lg-king { fill: var(--brass); animation: lg-king 7s ease-in-out 1.5s infinite; }
@keyframes lg-rook { 0%, 8% { transform: none; } 16%, 58% { transform: translateX(22px); } 66%, 100% { transform: none; } }
@keyframes lg-king { 0%, 8% { transform: none; } 12% { transform: translate(-11px, -5px); } 16%, 58% { transform: translateX(-22px); } 62% { transform: translate(-11px, -5px); } 66%, 100% { transform: none; } }
.logo:hover .lg-rook, .logo:hover .lg-king { animation-duration: 2.4s; animation-delay: 0s; }

/* ====== Tactics page ====== */
.toc { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin: 24px 0 8px; }
.toc h3 { margin: 0 0 6px; font-size: 1rem; }
.toc ol { margin: 0; padding-left: 1.3em; font-size: 0.95rem; line-height: 1.8; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }
.group-title { margin-top: 2.2em; padding-top: 12px; border-top: 2px solid var(--accent); }
.group-blurb { color: var(--ink-soft); margin-top: -0.2em; }
.tactic-name { display: flex; align-items: center; gap: 10px; font-size: 1.45rem; margin-top: 0.4em; }
.tactic-name .num { display: inline-flex; align-items: center; justify-content: center; min-width: 32px; height: 32px; border-radius: 999px; background: var(--accent); color: var(--accent-ink); font-family: var(--sans); font-size: 0.9rem; font-weight: 700; }
.puzzle-block { scroll-margin-top: 80px; }
@media (max-width: 760px) { .toc { grid-template-columns: 1fr; } }
@media (max-width: 760px) { .home-hero::before { left: -16px; right: -16px; } }
html { overflow-x: clip; }

/* ---------- Game analysis ---------- */
.pb-review-btn small { font-weight: 600; font-size: 0.72rem; text-transform: uppercase; letter-spacing: .04em; opacity: .8; margin-left: 4px; }
.pb-reviewing .pb-status, .pb-reviewing .pb-moves, .pb-reviewing .pb-tools { display: none; }
.pb-reviewing .pb-left { display: grid; grid-template-columns: 22px minmax(0, 1fr); column-gap: 8px; }
.pb-reviewing .pb-left > .pb-player { grid-column: 2; }
.pb-reviewing .pb-left > .rv-eval { grid-column: 1; grid-row: 2; }
.pb-reviewing .pb-left > .pb-board { grid-column: 2; grid-row: 2; }
.pb-reviewing .pb-pc { cursor: default; }
.rv-eval { position: relative; border-radius: 4px; overflow: hidden; background: #3d3a36; box-shadow: inset 0 0 0 1px rgba(0,0,0,.25); }
.rv-eval-w { position: absolute; left: 0; right: 0; bottom: 0; height: 50%; background: #f4f2ec; transition: height .35s ease; }
.rv-eval.flipped .rv-eval-w { bottom: auto; top: 0; }
.rv-eval-n { position: absolute; left: 0; right: 0; text-align: center; font-size: 9px; font-weight: 800; letter-spacing: -.02em; z-index: 1; }
.rv-eval-n.w { bottom: 4px; color: #3d3a36; }
.rv-eval-n.b { top: 4px; color: #f4f2ec; }
.rv-eval.flipped .rv-eval-n.w { bottom: auto; top: 4px; }
.rv-eval.flipped .rv-eval-n.b { top: auto; bottom: 4px; }
.rv-arrows { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 7; pointer-events: none; grid-column: 1 / -1; grid-row: 1 / -1; }
.rv-badge { position: absolute; top: 3%; right: 3%; min-width: 34%; height: 30%; padding: 0 3%; border-radius: 6px; z-index: 8; pointer-events: none;
  display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; font-size: clamp(8px, 1.5vw, 14px); line-height: 1;
  box-shadow: 0 1px 3px rgba(0,0,0,.4); letter-spacing: -.04em; animation: rv-pop .25s cubic-bezier(.2,.9,.3,1.4) both; }
@keyframes rv-pop { from { transform: scale(.3); opacity: 0; } }
.rv-panel { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.rv-head { display: flex; align-items: center; justify-content: space-between; }
.rv-head h3 { margin: 0; font-size: 1.15rem; }
.rv-x { border: 0; background: transparent; color: var(--ink-soft); font-size: 1.1rem; cursor: pointer; padding: 4px 8px; border-radius: 8px; }
.rv-x:hover { background: var(--paper-2); }
.rv-progress p { margin: 6px 0 0; font-size: .9rem; color: var(--ink-soft); }
.rv-bar { height: 8px; border-radius: 99px; background: var(--paper-2); overflow: hidden; }
.rv-bar span { display: block; height: 100%; width: 0; background: var(--accent); transition: width .25s; }
.rv-acc { display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 8px; text-align: center; }
.rv-acc > div { display: flex; flex-direction: column; gap: 4px; }
.rv-acc-name { font-size: .85rem; font-weight: 700; color: var(--ink-soft); }
.rv-acc-num { font-size: 1.5rem; font-weight: 800; border-radius: 10px; padding: 6px 4px; }
.rv-acc-num.w { background: #f4f2ec; color: #262421; box-shadow: inset 0 0 0 1px var(--line); }
.rv-acc-num.b { background: #3d3a36; color: #f4f2ec; }
.rv-acc-lbl { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-soft); padding-bottom: 12px; }
.rv-opening { margin: 10px 0 0; font-size: .9rem; text-align: center; }
.rv-counts { margin-top: 8px; font-size: .9rem; }
.rv-counts summary { cursor: pointer; font-weight: 700; color: var(--ink-soft); text-align: center; }
.rv-counts table { width: 100%; border-collapse: collapse; margin-top: 6px; }
.rv-counts th { font-size: .78rem; color: var(--ink-soft); font-weight: 700; padding: 2px; }
.rv-counts td { padding: 3px 2px; border-top: 1px solid var(--line); }
.rv-counts td.n { text-align: center; font-weight: 800; width: 3.5em; }
.rv-dot { display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 20px; padding: 0 3px; border-radius: 5px; color: #fff; font-weight: 800; font-size: 11px; letter-spacing: -.04em; flex: none; margin-right: 6px; vertical-align: middle; }
.rv-dot.sm { min-width: 18px; height: 15px; font-size: 9px; margin-right: 4px; }
.rv-graph svg { display: block; width: 100%; height: 72px; border-radius: 8px; cursor: pointer; }
.rv-g-bg { fill: #3d3a36; }
.rv-g-w { fill: #f4f2ec; }
.rv-g-mid { stroke: #8a8578; stroke-width: .8; stroke-dasharray: 3 3; }
.rv-cursor { stroke: var(--brass); stroke-width: 2; vector-effect: non-scaling-stroke; }
.rv-graph circle { vector-effect: non-scaling-stroke; }
.rv-coach { background: var(--paper); border-radius: 10px; padding: 10px 12px; min-height: 64px; font-size: .95rem; }
.rv-coach p { margin: 6px 0 0; }
.rv-coach-top { display: flex; align-items: center; }
.rv-coach-ev { margin-left: auto; font-weight: 800; font-size: .85rem; background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 2px 7px; font-family: ui-monospace, Menlo, Consolas, monospace; }
.rv-moves { max-height: 190px; overflow-y: auto; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .9rem; position: relative; }
.rv-row { display: grid; grid-template-columns: 2.6em 1fr 1fr; gap: 2px; padding: 1px 2px; border-radius: 4px; }
.rv-row:nth-child(odd) { background: var(--paper); }
.rv-no { color: var(--ink-soft); align-self: center; }
.rv-mv { border: 0; background: transparent; color: var(--ink); font: inherit; text-align: left; padding: 3px 4px; border-radius: 5px; cursor: pointer; display: flex; align-items: center; min-width: 0; }
.rv-mv:hover { background: var(--paper-2); }
.rv-mv.on { background: var(--accent); color: var(--accent-ink); }
.rv-mv.c-blunder:not(.on) { color: #dc4437; font-weight: 700; }
.rv-mv.c-mistake:not(.on) { color: #d9752a; font-weight: 700; }
.rv-mv.c-brilliant:not(.on) { color: #9b6ad6; font-weight: 700; }
.rv-nav { display: flex; gap: 8px; }
.rv-nav .pb-btn { flex: 1; }
.rv-note { margin: 0; font-size: .78rem; color: var(--ink-soft); }
@media (max-width: 520px) {
  .pb-reviewing .pb-left { grid-template-columns: 14px minmax(0, 1fr); column-gap: 6px; }
  .rv-eval-n { display: none; }
}
.pb-reviewing .pb-left > .pb-player:first-child { grid-row: 1; }
.pb-reviewing .pb-left > .pb-player:last-child { grid-row: 3; }
@media (max-width: 860px) {
  .rv-head { order: 0; } .rv-progress { order: 1; } .rv-coach { order: 2; } .rv-nav { order: 3; }
  .rv-summary { order: 4; } .rv-graph { order: 5; } .rv-moves { order: 6; } .rv-nav + .rv-nav { order: 7; } .rv-note { order: 8; }
}
.pb-notice { border-radius: 10px; padding: 10px 12px; font-size: .88rem; border: 1px solid; }
.pb-notice.info { border-color: #4287f5; background: var(--info-bg); }
.pb-notice.bad { border-color: var(--bad); background: var(--bad-bg); }
.pb-reviewing .pb-notice { display: none; }
.rv-engine { font-size: .85rem; border-radius: 10px; padding: 8px 12px; border: 1px solid; }
.rv-engine.sf { border-color: var(--line); background: var(--paper); color: var(--ink-soft); }
.rv-engine.sf b { color: var(--ink); }
.rv-engine.ce { border-color: var(--bad); background: var(--bad-bg); }
@media (max-width: 860px) { .rv-engine { order: 1; } }

/* ---------- Analysis page (import games) ---------- */
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.an-hero { padding-bottom: 8px; }
.an-form { display: flex; flex-direction: column; gap: 12px; max-width: 560px; margin-top: 18px; }
.an-site label { position: relative; }
.an-site input { position: absolute; opacity: 0; pointer-events: none; }
.an-site span { display: inline-block; padding: 9px 18px; border-radius: 999px; font-weight: 700; font-size: .95rem; color: var(--ink-soft); cursor: pointer; }
.an-site input:checked + span { background: var(--card); color: var(--accent); box-shadow: 0 1px 4px rgba(0,0,0,.12); }
.an-site input:focus-visible + span { outline: 3px solid var(--brass); outline-offset: 2px; }
.an-row { display: flex; gap: 8px; }
.an-row input { flex: 1; min-width: 0; font: inherit; font-size: 1.05rem; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink); }
.an-row input:focus { outline: 3px solid var(--brass); outline-offset: 1px; }
.an-row .pb-btn { flex: none; padding: 12px 18px; font-size: 1rem; }
.an-pgn { max-width: 560px; margin-top: 12px; color: var(--ink-soft); font-size: .92rem; }
.an-pgn summary { cursor: pointer; font-weight: 600; }
.an-pgn form { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.an-pgn textarea { font: .85rem ui-monospace, Menlo, Consolas, monospace; padding: 10px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink); resize: vertical; }
.an-pgn .pb-btn { align-self: flex-start; }
.an-status { max-width: 560px; margin: 14px 0 0; padding: 10px 14px; border-radius: 10px; background: var(--card); border: 1px solid var(--line); }
.an-status.bad { border-color: var(--bad); background: var(--bad-bg); }
.an-spin { display: inline-block; width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--line); border-top-color: var(--accent); vertical-align: -2px; margin-right: 6px; animation: an-spin .8s linear infinite; }
@keyframes an-spin { to { transform: rotate(360deg); } }
.an-board { margin-top: 26px; scroll-margin-top: 80px; }
.an-board-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.an-board-head h2 { margin: 0; font-size: 1.25rem; overflow-wrap: anywhere; }
.an-board-head a { font-size: .9rem; }
.an-games { margin-top: 26px; scroll-margin-top: 80px; }
.an-list { display: flex; flex-direction: column; gap: 6px; }
.an-game { display: flex; align-items: center; gap: 12px; width: 100%; text-align: left; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 12px; padding: 10px 12px; cursor: pointer; font: inherit; }
.an-game:hover { border-color: var(--accent); }
.an-game.on { border-color: var(--accent); box-shadow: inset 3px 0 0 var(--accent); }
.an-game:focus-visible { outline: 3px solid var(--brass); outline-offset: 2px; }
.an-res { flex: none; min-width: 34px; height: 34px; padding: 0 4px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: .85rem; color: #fff; }
.an-res.win { background: #3f8f5c; } .an-res.loss { background: #cf3b31; } .an-res.draw { background: #858b96; } .an-res.other { background: #5d7aa8; }
.an-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.an-players { font-weight: 700; overflow-wrap: anywhere; }
.an-r { font-weight: 500; color: var(--ink-soft); }
.an-vs { font-weight: 500; color: var(--ink-soft); font-size: .85rem; }
.an-w, .an-b { color: var(--ink-soft); }
.an-meta { font-size: .82rem; color: var(--ink-soft); }
.an-go { flex: none; font-weight: 700; color: var(--accent); font-size: .9rem; }
.an-more { margin-top: 10px; width: 100%; }
.an-legend { list-style: none; padding: 0; }
.an-legend li { margin: 6px 0; }
.an-disclaimer { font-size: .85rem; color: var(--ink-soft); border-top: 1px solid var(--line); padding-top: 12px; margin-top: 24px; }
.rv-acc-name { overflow-wrap: anywhere; }
@media (max-width: 520px) {
  .an-row { flex-direction: column; }
  .an-go { display: none; }
}
.an-promo { display: flex; align-items: center; justify-content: space-between; gap: 16px 24px; flex-wrap: wrap; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px; margin-top: 28px; }
.an-promo h2 { margin: 0 0 4px; font-size: 1.3rem; }
.an-promo p { margin: 0; color: var(--ink-soft); }
.an-promo .pb-btn { flex: none; text-decoration: none; padding: 12px 20px; }
.an-site { align-self: flex-start; }

/* Quick answer box (AEO) */
.answer-box { border: 1px solid var(--line); border-left: 4px solid var(--accent); background: var(--card); border-radius: 12px; padding: 14px 18px; margin: 18px 0; }
.answer-box p { margin: 0; }
.answer-box .answer-label { font-size: .78rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); margin-bottom: 4px; }
.toc .toc-h { margin: 0 0 6px; font-size: 1rem; font-weight: 700; }

/* ---------- Site search ---------- */
.search-btn { height: 40px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink-soft); cursor: pointer; display: inline-flex; align-items: center; gap: 8px; padding: 0 14px 0 12px; font: inherit; font-size: .9rem; font-weight: 600; }
.search-btn svg { width: 18px; height: 18px; flex: none; }
.search-btn:hover { border-color: var(--accent); color: var(--accent); }
.search-btn:focus-visible { outline: 3px solid var(--brass); outline-offset: 2px; }
.srch-open, .srch-open body { overflow: hidden; }
.srch { position: fixed; inset: 0; z-index: 2000; background: rgba(15, 14, 12, .55); display: flex; justify-content: center; align-items: flex-start; padding: 9vh 16px 16px; }
.srch[hidden] { display: none !important; }
.srch-panel { width: 100%; max-width: 640px; max-height: 78vh; display: flex; flex-direction: column; background: var(--card); color: var(--ink); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 24px 70px rgba(0,0,0,.4); overflow: hidden; animation: srch-in .16s ease-out both; }
@keyframes srch-in { from { transform: translateY(-8px); opacity: 0; } }
.srch-bar { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.srch-bar svg { width: 20px; height: 20px; color: var(--ink-soft); flex: none; }
.srch-bar input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink); font: inherit; font-size: 1.1rem; padding: 6px 0; }
.srch-bar input::-webkit-search-cancel-button { display: none; }
.srch-close { flex: none; border: 1px solid var(--line); background: var(--paper); color: var(--ink-soft); border-radius: 6px; font: 600 .75rem/1 var(--sans); padding: 6px 8px; cursor: pointer; }
.srch-list { overflow-y: auto; padding: 8px; }
.srch-head { margin: 4px 8px 6px; font-size: .75rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-soft); }
.srch-item { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px; border-radius: 10px; text-decoration: none; color: var(--ink); }
.srch-item:hover, .srch-item.on { background: var(--paper-2); }
.srch-item.on { box-shadow: inset 3px 0 0 var(--accent); }
.srch-sec { font-size: .72rem; font-weight: 700; letter-spacing: .03em; text-transform: uppercase; color: var(--accent); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.srch-t { font-weight: 700; }
.srch-t mark { background: rgba(236, 196, 82, .45); color: inherit; border-radius: 3px; padding: 0 1px; }
.srch-d { font-size: .85rem; color: var(--ink-soft); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.srch-empty { margin: 14px 10px; color: var(--ink-soft); }
@media (max-width: 760px) {
  .search-btn { width: 40px; padding: 0; justify-content: center; }
  .search-btn span { display: none; }
  .srch { padding: 0; align-items: stretch; }
  .srch-panel { max-width: none; max-height: none; height: 100%; border-radius: 0; border: 0; }
}
.srch-close .x { display: none; }
@media (max-width: 760px) { .srch-close .k { display: none; } .srch-close .x { display: inline; } .srch-close { font-size: 1rem; padding: 6px 10px; } }

/* ---------- Inner-page design: header band, sidebar, picture cards ---------- */
.mini-board { display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr); aspect-ratio: 1 / 1; border-radius: 6px; overflow: hidden; background: var(--pb-dark, #5e8d6e); }
.mini-board .mb { position: relative; }
.mini-board .mb.l { background: #f0ecdc; }
.mini-board .mb.d { background: #5e8d6e; }
.mini-board .mb.h::before { content: ""; position: absolute; inset: 0; background: rgba(236, 196, 82, 0.55); }
.mini-board svg { position: relative; display: block; width: 100%; height: 100%; }

.page-hero { position: relative; margin: 0 calc(50% - 50vw) 30px; padding: 6px 0 34px; color: #eef1ea; overflow: hidden;
  background: radial-gradient(900px 420px at 12% -10%, #2f6a58 0%, rgba(47,106,88,0) 70%), linear-gradient(160deg, #1d3d34 0%, #15302a 60%, #13261f 100%); }
.page-hero::before { content: ""; position: absolute; inset: 0; opacity: .07; pointer-events: none;
  background-image: conic-gradient(#fff 25%, transparent 0 50%, #fff 0 75%, transparent 0); background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 55%); mask-image: linear-gradient(90deg, transparent 0%, #000 55%); }
.page-hero-in { position: relative; max-width: var(--max); margin: 0 auto; padding: 0 16px; display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px 48px; align-items: center; }
.page-hero.has-board .page-hero-in { grid-template-columns: minmax(0, 1fr) 280px; }
.page-hero .crumbs, .page-hero .crumbs a { color: #b9cdc3; }
.page-hero .crumbs { margin-top: 18px; }
.page-hero .eyebrow { color: #e8b04a; margin: 18px 0 0; }
.page-hero h1 { color: #fff; margin: .25em 0 .35em; max-width: 820px; text-shadow: 0 2px 0 rgba(0,0,0,.18); }
.page-hero .meta-row { color: #b9cdc3; }
.page-hero .meta-row a { color: #e7f0ea; }
.page-hero .ph-text > p:not(.eyebrow) { color: #dbe5df; font-size: 1.06rem; max-width: 700px; margin: 14px 0 0; }
.page-hero .ph-text > p:not(.eyebrow) a { color: #fff; }
.page-hero .ph-text > p strong, .page-hero .ph-text > p b { color: #fff; }
.ph-board { margin: 22px 0 0; }
.ph-board .mini-board { width: 100%; box-shadow: 0 18px 40px rgba(0,0,0,.45), 0 0 0 5px rgba(255,255,255,.06); transform: rotate(-1.5deg); transition: transform .4s ease; }
.ph-board:hover .mini-board { transform: rotate(0deg) scale(1.02); }
.ph-board figcaption { margin-top: 12px; font-size: .82rem; color: #b9cdc3; text-align: center; }
main.has-hero > .page-hero:first-child { margin-top: 0; }

.with-side { display: grid; grid-template-columns: minmax(0, 1fr) 270px; gap: 48px; align-items: start; }
.art-main { min-width: 0; }
.art-side { position: sticky; top: 82px; display: flex; flex-direction: column; gap: 14px; font-size: .92rem; max-height: calc(100vh - 100px); overflow: auto; }
.side-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 14px 12px; }
.side-h { margin: 0 0 8px; font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
.side-toc a { display: block; padding: 5px 10px; margin-left: 2px; border-left: 2px solid var(--line); color: var(--ink-soft); text-decoration: none; line-height: 1.35; }
.side-toc a:hover { color: var(--ink); border-color: var(--ink-soft); }
.side-toc a.on { color: var(--accent); border-color: var(--accent); font-weight: 700; }
.side-links a { display: block; padding: 7px 10px; border-radius: 8px; color: var(--ink); text-decoration: none; font-weight: 600; }
.side-links a:hover { background: var(--paper-2); color: var(--accent); }
@media (max-width: 1080px) { .with-side { grid-template-columns: minmax(0, 1fr); } .art-side { display: none; } }

.lead-grid { max-width: none; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 460px); gap: 0 36px; align-items: start; }
.lead-grid > * { grid-column: 1; }
.lead-grid > .answer-box { grid-column: 2; grid-row: 1 / span 4; margin-top: 0; }
.lead-grid > .callout:first-child, .lead-grid > p:first-child { margin-top: 0; }
@media (max-width: 900px) { .lead-grid { grid-template-columns: minmax(0, 1fr); } .lead-grid > .answer-box { grid-column: 1; grid-row: auto; } }

.card.card-thumb { display: grid; grid-template-columns: 84px minmax(0, 1fr); column-gap: 14px; align-content: start; }
.card.card-thumb > .mini-board { grid-row: 1 / span 3; width: 84px; box-shadow: 0 2px 8px rgba(0,0,0,.18); transition: transform .25s ease; }
.card.card-thumb:hover > .mini-board { transform: rotate(-3deg) scale(1.04); }
.card.card-thumb > :not(.mini-board) { grid-column: 2; }

.toc.toc-cards { display: flex; flex-direction: column; gap: 18px; }
.tc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 10px; }
.tc { display: flex; flex-direction: column; gap: 6px; padding: 8px; border-radius: 10px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); text-decoration: none; font-weight: 600; font-size: .86rem; text-align: center; transition: transform .2s ease, border-color .2s; }
.tc:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--accent); }
.tc .mini-board { width: 100%; }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } .ph-board .mini-board { transform: none; } }
@media (max-width: 760px) {
  .page-hero.has-board .page-hero-in { grid-template-columns: minmax(0, 1fr) 112px; align-items: end; }
  .page-hero { padding-bottom: 26px; }
  .page-hero .ph-text > p:not(.eyebrow) { font-size: 1rem; }
  .ph-board { margin: 0; }
  .ph-board figcaption { display: none; }
  .page-hero .ph-text { grid-row: 1; }
  .page-hero.has-board .ph-text > p:not(.eyebrow), .page-hero.has-board .meta-row { grid-column: 1 / -1; }
}
@media (max-width: 520px) { .page-hero.has-board .page-hero-in { grid-template-columns: minmax(0, 1fr); } .ph-board { display: none; } }
.with-side .split { grid-template-columns: minmax(0, 1fr); }
.with-side .split > .prose { max-width: 720px; }
.card.card-thumb > .tag { justify-self: start; }
.page-hero .ph-text > h1:first-child { margin-top: 30px; }
.tc-grid { grid-template-columns: repeat(auto-fill, minmax(128px, 1fr)); }
@media (min-width: 761px) and (max-width: 1100px) {
  .search-btn { width: 40px; padding: 0; justify-content: center; }
  .search-btn span { display: none; }
  .nav { gap: 10px; flex-wrap: nowrap; }
  .nav a { font-size: 0.9rem; }
  .logo { font-size: 1.15rem; }
}
@media (min-width: 761px) and (max-width: 900px) { .logo .castle-logo { display: none; } .nav { gap: 6px; } }