:root{
  --bg:#efe6d2; --surface:#fbf6ea; --surface-2:#f4ead2;
  --ink:#2a1e12; --muted:#6b5b45; --line:#e2d4b6;
  --frame:#33200f; --frame-ink:#f2e6cf; --frame-muted:#c3a983;
  --queen:#b0261f; --queen-soft:#f3ddd6; --gold:#b0842a;
  --coin-black:#211a14; --coin-white:#f7efdd; --coin-white-line:#c9b58c;
  --shadow:0 1px 2px rgba(46,28,16,.08), 0 8px 24px rgba(46,28,16,.07);
  --radius:14px;
  --serif:Georgia,"Iowan Old Style","Palatino Linotype",Palatino,"Times New Roman",serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Code",Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#1a120b; --surface:#241811; --surface-2:#2c1e12;
    --ink:#f2e7d4; --muted:#b39a78; --line:#3a2818;
    --frame:#0f0a05; --frame-ink:#f2e6cf; --frame-muted:#b39670;
    --queen:#dd5a50; --queen-soft:#3a1f1a; --gold:#d7ab55;
    --coin-black:#0d0a07; --coin-white:#efe4cd; --coin-white-line:#8a744e;
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.35);
  }
}
:root[data-theme="light"]{
  --bg:#efe6d2; --surface:#fbf6ea; --surface-2:#f4ead2;
  --ink:#2a1e12; --muted:#6b5b45; --line:#e2d4b6;
  --frame:#33200f; --frame-ink:#f2e6cf; --frame-muted:#c3a983;
  --queen:#b0261f; --queen-soft:#f3ddd6; --gold:#b0842a;
  --coin-black:#211a14; --coin-white:#f7efdd; --coin-white-line:#c9b58c;
  --shadow:0 1px 2px rgba(46,28,16,.08), 0 8px 24px rgba(46,28,16,.07);
}
:root[data-theme="dark"]{
  --bg:#1a120b; --surface:#241811; --surface-2:#2c1e12;
  --ink:#f2e7d4; --muted:#b39a78; --line:#3a2818;
  --frame:#0f0a05; --frame-ink:#f2e6cf; --frame-muted:#b39670;
  --queen:#dd5a50; --queen-soft:#3a1f1a; --gold:#d7ab55;
  --coin-black:#0d0a07; --coin-white:#efe4cd; --coin-white-line:#8a744e;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:17px;line-height:1.62;-webkit-font-smoothing:antialiased}
.wrap{max-width:760px;margin:0 auto;padding:0 22px}

/* ---------- hero ---------- */
.hero{background:
    radial-gradient(120% 140% at 85% -10%, rgba(176,132,42,.22), transparent 60%),
    linear-gradient(180deg,#3d2712,var(--frame));
  color:var(--frame-ink);border-bottom:3px solid var(--gold)}
.hero .wrap{padding-top:54px;padding-bottom:52px;
  display:grid;grid-template-columns:1fr auto;gap:34px;align-items:center}
.eyebrow{font-family:var(--mono);font-size:.72rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--frame-muted);margin:0 0 14px}
.hero h1{font-family:var(--serif);font-weight:600;font-size:clamp(2.1rem,6vw,3.15rem);
  line-height:1.04;margin:0;text-wrap:balance;letter-spacing:-.01em}
.hero p{margin:16px 0 0;max-width:34ch;color:#e9dcc4;font-size:1.02rem}
@media (max-width:560px){ .hero .wrap{grid-template-columns:1fr} .board-motif{display:none} }

/* CSS carrom board motif */
.board-motif{width:150px;height:150px;border-radius:10px;position:relative;
  background:
    radial-gradient(circle at 50% 42%, rgba(176,132,42,.16), transparent 55%),
    linear-gradient(150deg,#e9d3a2,#d9bd85);
  border:9px solid #24160b;box-shadow:inset 0 0 0 2px rgba(176,132,42,.5), var(--shadow)}
.board-motif::before{content:"";position:absolute;inset:26px;border-radius:50%;
  border:2px solid rgba(120,80,30,.5)}
.board-motif::after{content:"";position:absolute;left:50%;top:50%;width:15px;height:15px;
  transform:translate(-50%,-50%);border-radius:50%;background:var(--queen);
  box-shadow:0 0 0 3px rgba(255,255,255,.5)}
.pocket{position:absolute;width:17px;height:17px;border-radius:50%;background:#180f07;
  box-shadow:inset 0 1px 2px rgba(0,0,0,.6)}
.pocket.tl{top:5px;left:5px}.pocket.tr{top:5px;right:5px}
.pocket.bl{bottom:5px;left:5px}.pocket.br{bottom:5px;right:5px}

/* ---------- chapter nav ---------- */
.guide-nav{background:var(--surface-2);border-bottom:1px solid var(--line)}
.guide-nav .wrap{display:flex;flex-wrap:wrap;gap:8px;padding-top:14px;padding-bottom:14px}
.guide-nav a{font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;
  color:var(--muted);text-decoration:none;border:1px solid var(--line);border-radius:20px;
  padding:6px 13px;white-space:nowrap;background:var(--surface)}
.guide-nav a:hover{color:var(--ink);border-color:var(--gold)}
.guide-nav a.active{color:var(--frame-ink);background:var(--frame);border-color:var(--frame)}

/* ---------- flow ---------- */
main .wrap{padding-top:12px;padding-bottom:72px}
section{padding-top:40px}
h2{font-family:var(--serif);font-weight:600;font-size:1.62rem;letter-spacing:-.01em;
  margin:0 0 6px;text-wrap:balance;display:flex;align-items:baseline;gap:.5em}
h2 .num{font-family:var(--mono);font-size:.78rem;color:var(--queen);letter-spacing:.05em}
h3{font-family:var(--sans);font-weight:700;font-size:1.06rem;margin:26px 0 4px}
.lead{color:var(--muted);margin:.2rem 0 0;max-width:64ch}
p{max-width:64ch}
a{color:var(--queen);text-underline-offset:2px}
.rule-hr{border:0;border-top:1px solid var(--line);margin:44px 0 0}

/* cards */
.cards{display:grid;gap:16px;margin-top:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow)}
.card h3{margin-top:0;display:flex;align-items:center;gap:.55em}
.card p{margin:.35rem 0 0;color:var(--muted)}
.tag{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--gold);border:1px solid var(--line);border-radius:20px;padding:3px 9px;white-space:nowrap}

/* coins */
.coin{display:inline-flex;align-items:center;gap:.4em;font-weight:600;font-size:.92em;
  white-space:nowrap}
.dot{width:.82em;height:.82em;border-radius:50%;display:inline-block;flex:none}
.dot.black{background:var(--coin-black);box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)}
.dot.white{background:var(--coin-white);box-shadow:inset 0 0 0 1px var(--coin-white-line)}
.dot.red{background:var(--queen)}

/* controls table */
.table-scroll{overflow-x:auto;margin-top:20px;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow)}
table{border-collapse:collapse;width:100%;min-width:520px;background:var(--surface);font-size:.96rem}
caption{caption-side:top;text-align:left;padding:14px 18px 0;color:var(--muted);font-size:.9rem}
th,td{text-align:left;padding:13px 18px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:600;background:var(--surface-2)}
tbody tr:last-child td{border-bottom:0}
td:first-child{font-weight:600;width:34%}
kbd{font-family:var(--mono);font-size:.8em;background:var(--surface-2);color:var(--ink);
  border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:2px 7px;white-space:nowrap}

/* ordered win rules */
ol.rules{counter-reset:r;list-style:none;padding:0;margin:22px 0 0;display:grid;gap:14px}
ol.rules li{position:relative;padding:16px 18px 16px 58px;background:var(--surface);
  border:1px solid var(--line);border-left:3px solid var(--queen);border-radius:12px;box-shadow:var(--shadow)}
ol.rules li::before{counter-increment:r;content:counter(r);position:absolute;left:16px;top:14px;
  font-family:var(--serif);font-size:1.3rem;font-weight:700;color:var(--queen);line-height:1}
ol.rules b{font-weight:700}

ul.plain{padding-left:1.1em;margin:.4rem 0 0;max-width:64ch}
ul.plain li{margin:.35rem 0}

.callout{margin-top:22px;background:var(--queen-soft);border:1px solid var(--line);
  border-radius:12px;padding:16px 18px;font-size:.96rem}
.callout b{color:var(--queen)}

/* steps */
ol.steps{counter-reset:s;list-style:none;padding:0;margin:20px 0 0;display:grid;gap:2px}
ol.steps li{position:relative;padding:12px 0 12px 44px;border-top:1px dashed var(--line)}
ol.steps li:first-child{border-top:0}
ol.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:11px;
  width:28px;height:28px;border-radius:50%;background:var(--frame);color:var(--frame-ink);
  font-family:var(--mono);font-size:.85rem;display:grid;place-items:center}

/* ---------- chapter index (landing page) ---------- */
.chapters{display:grid;gap:14px;margin-top:22px}
.chapter-link{display:flex;align-items:baseline;gap:14px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;
  box-shadow:var(--shadow);text-decoration:none;color:inherit;transition:border-color .15s}
.chapter-link:hover{border-color:var(--gold)}
.chapter-link .num{font-family:var(--mono);font-size:.78rem;color:var(--queen);flex:none}
.chapter-link .chapter-title{font-family:var(--serif);font-weight:600;font-size:1.1rem;margin:0}
.chapter-link .chapter-desc{color:var(--muted);font-size:.92rem;margin:.2rem 0 0}
.chapter-link .arrow{margin-left:auto;color:var(--muted);flex:none}

/* ---------- prev / next pager ---------- */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:56px}
.pager a{text-decoration:none;color:inherit;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow);display:block}
.pager a:hover{border-color:var(--gold)}
.pager .dir{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted)}
.pager .title{font-family:var(--serif);font-weight:600;font-size:1.02rem;margin-top:4px;color:var(--ink)}
.pager .next{text-align:right}
@media (max-width:560px){ .pager{grid-template-columns:1fr} .pager .next{text-align:left} }

footer{background:var(--frame);color:var(--frame-muted);border-top:3px solid var(--gold)}
footer .wrap{padding:26px 22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:.85rem;font-family:var(--mono);letter-spacing:.04em}
footer b{color:var(--frame-ink);font-weight:600}
footer a{color:var(--frame-muted)}

@media (prefers-reduced-motion:no-preference){
  section,.card,ol.rules li,.chapter-link{animation:rise .5s cubic-bezier(.2,.7,.2,1) both}
  @keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
}
a:focus-visible,summary:focus-visible{outline:2px solid var(--queen);outline-offset:3px;border-radius:4px}