*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
img{max-width:100%}

:root{
  --navy:#16264A; --gold:#8A6224; --cream:#F4EFE4; --stone:#C9BFA8;
  --bg:#F4EFE4; --surface:#FDFCFA; --text:#211E1A; --muted:#5F5748;
  --rule:#D9CFBC; --accent:#8A6224; --bar:#16264A; --barText:#F4EFE4;
  --chip:#EAE1CF;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0F131C; --surface:#161C28; --text:#E9E3D7; --muted:#A79E8C;
    --rule:#2D3648; --accent:#C9A057; --bar:#16264A; --barText:#E9E3D7;
    --chip:#1E2534; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0F131C; --surface:#161C28; --text:#E9E3D7; --muted:#A79E8C;
  --rule:#2D3648; --accent:#C9A057; --bar:#16264A; --barText:#E9E3D7;
  --chip:#1E2534; color-scheme:dark;
}
*{box-sizing:border-box}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:"Spectral",Georgia,"Times New Roman",serif;
  font-size:17px; line-height:1.62; -webkit-font-smoothing:antialiased;
}
.wrap{max-width:730px; margin:0 auto; padding-left:20px; padding-right:20px}

/* masthead */
.mast{background:var(--bar);color:var(--barText);border-bottom:3px solid var(--gold)}
.mast .wrap{padding-block:18px;display:flex;justify-content:space-between;
  align-items:baseline;gap:14px;flex-wrap:wrap}
.mark{font-family:"Archivo",system-ui,sans-serif;font-weight:600;font-size:13px;
  letter-spacing:.22em;text-transform:uppercase}
.mast nav{font-family:"Archivo",system-ui,sans-serif;font-size:12px;letter-spacing:.06em;
  color:#C9BFA8}
.mast nav span{margin-left:16px}

main .wrap{padding-block:44px 20px}
.crumb{font-family:"Archivo",system-ui,sans-serif;font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);margin:0 0 18px}
h1{font-size:2.15rem;line-height:1.16;margin:0 0 .5rem;font-weight:700;
  letter-spacing:-.012em;text-wrap:balance}
.deck{font-size:1.16rem;color:var(--muted);margin:0 0 2rem;text-wrap:balance}
h2{font-size:1.3rem;margin:2.5rem 0 .7rem;font-weight:600;text-wrap:balance}
h3{font-family:"Archivo",system-ui,sans-serif;font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);margin:2.2rem 0 .6rem;font-weight:600}
p{margin:0 0 1.1rem}
em{font-style:italic}
strong{font-weight:600}
a{color:var(--accent)}
.rule{height:1px;background:var(--rule);border:0;margin:2.6rem 0}
.logo{display:block;width:230px;max-width:62%;height:auto;margin:0 auto 4px;
  mix-blend-mode:multiply}
.logo-wrap{text-align:center;margin-bottom:10px}
.deck-c{text-align:center;max-width:44ch;margin-left:auto;margin-right:auto}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .logo{mix-blend-mode:normal;background:#F4EFE4;
    padding:14px;border-radius:4px}
}
:root[data-theme="dark"] .logo{mix-blend-mode:normal;background:#F4EFE4;
  padding:14px;border-radius:4px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.sig{font-size:.95rem;color:var(--muted);font-style:italic;margin-top:2.4rem}

/* product blocks */
.rung{display:grid;grid-template-columns:104px 1fr;gap:20px;align-items:start;
  padding:22px 0;border-top:1px solid var(--rule)}
.rung:last-of-type{border-bottom:1px solid var(--rule)}
.rung img{width:104px;height:auto;display:block;border:1px solid var(--rule);
  border-radius:2px;background:var(--surface)}
.rung h4{margin:0 0 .15rem;font-size:1.12rem;font-weight:600}
.price{font-family:"Archivo",system-ui,sans-serif;font-size:12px;font-weight:600;
  letter-spacing:.1em;color:var(--accent);margin:0 0 .5rem;font-variant-numeric:tabular-nums}
.rung p{margin:0 0 .85rem;font-size:.98rem}
.buy{display:inline-block;font-family:"Archivo",system-ui,sans-serif;font-size:12.5px;
  font-weight:600;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;
  background:var(--bar);color:var(--barText);padding:9px 18px;border-radius:2px}
.buy:hover{background:var(--accent);color:#fff}
.buy.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}

/* product page hero */
.phero{display:grid;grid-template-columns:172px 1fr;gap:28px;align-items:start;margin-bottom:6px}
.phero img{width:172px;height:auto;display:block;border:1px solid var(--rule);border-radius:2px}
.pmeta{font-family:"Archivo",system-ui,sans-serif;font-size:12.5px;letter-spacing:.06em;
  color:var(--muted);margin:0 0 1.2rem;font-variant-numeric:tabular-nums}

.note{background:var(--surface);border-left:3px solid var(--accent);
  padding:16px 18px;margin:1.8rem 0;font-size:.97rem}
.note p:last-child{margin-bottom:0}
.small{font-size:.9rem;color:var(--muted)}
.todo{border:1px dashed var(--rule);padding:18px;color:var(--muted);font-size:.95rem}

footer{border-top:1px solid var(--rule);margin-top:56px;background:var(--surface)}
footer .wrap{padding-block:26px 34px}
footer p{font-family:"Archivo",system-ui,sans-serif;font-size:12px;letter-spacing:.05em;
  color:var(--muted);margin:0 0 .4rem}

@media (max-width:560px){
  h1{font-size:1.72rem}
  .phero,.rung{grid-template-columns:1fr}
  .phero img{width:150px}
  .rung img{width:88px}
}

.mast nav a{margin-left:16px;color:#C9BFA8;text-decoration:none}
.mast nav a:hover{color:#F4EFE4}
a.mark{color:var(--barText);text-decoration:none}
.crumb a{color:var(--muted)}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .buy{background:var(--accent);color:#10141D}
  :root:not([data-theme="light"]) .buy.ghost{background:transparent;color:var(--accent);border-color:var(--accent)}
  :root:not([data-theme="light"]) .buy:hover{background:#E0BC77;color:#10141D}
}
:root[data-theme="dark"] .buy{background:var(--accent);color:#10141D}
:root[data-theme="dark"] .buy.ghost{background:transparent;color:var(--accent);border-color:var(--accent)}
:root[data-theme="dark"] .buy:hover{background:#E0BC77;color:#10141D}

/* Amazon paperback badge (official "Available at Amazon" tag; no box, min 200px, clear space kept) */
.buyrow{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-top:2px}
.amz{display:inline-flex;align-items:center;gap:14px;text-decoration:none;padding:4px 0}
.phero .amz img,.rung .amz img{width:200px;height:auto;display:block;border:0;border-radius:0;
  background:transparent}
.amz span{font-family:"Archivo",system-ui,sans-serif;font-size:12px;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;color:var(--muted);white-space:nowrap;
  font-variant-numeric:tabular-nums}
.amz:hover span{color:var(--accent)}
.phero .amz img.amz-dark,.rung .amz img.amz-dark{display:none}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .phero .amz img.amz-light,
  :root:not([data-theme="light"]) .rung .amz img.amz-light{display:none}
  :root:not([data-theme="light"]) .phero .amz img.amz-dark,
  :root:not([data-theme="light"]) .rung .amz img.amz-dark{display:block}
}
:root[data-theme="dark"] .phero .amz img.amz-light,
:root[data-theme="dark"] .rung .amz img.amz-light{display:none}
:root[data-theme="dark"] .phero .amz img.amz-dark,
:root[data-theme="dark"] .rung .amz img.amz-dark{display:block}
@media (max-width:560px){ .buyrow{gap:16px} }

/* product name links through to its own page */
.rung h4 a{color:inherit;text-decoration:none;
  border-bottom:1px solid var(--accent);padding-bottom:1px}
.rung h4 a:hover{color:var(--accent)}

/* one-checkout link for the whole ladder */
.bundle{margin:20px 0 0;font-size:.98rem;color:var(--muted)}
.bundle strong{color:var(--text);font-weight:600}
.bundle code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88em;
  background:var(--chip);color:var(--text);border-radius:2px;padding:1px 5px;letter-spacing:.04em}