/* Professor Layton and the New World of Steam — cream paper, brass plates, sepia ink.
   Palette sampled from official art (see DESIGN-BRIEF.md). */

:root{
  --paper:#f6ecd6; --paper-2:#efdfbe; --paper-3:#e6d3ac; --paper-4:#f9f2e2;
  --ink:#3a2b21; --ink-soft:#6b5643; --ink-faint:#8a7359;
  --brass:#b8863b; --brass-lt:#d9a441; --brass-dk:#8c6326;
  --brick:#9b3b2c; --seal:#8c2f22; --steam:#7d9aa3;
  --link:#8a4a1e; --link-hi:#a3581f;
  --line:rgba(58,43,33,.26); --line-strong:#3a2b21;
  --radius:4px; --maxw:1120px;
  --font:Georgia,"Iowan Old Style","Times New Roman",serif;
  --display:Georgia,"Times New Roman",serif;
  --mono:"Consolas","Courier New",monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
html{background:var(--paper);-webkit-text-size-adjust:100%}
body{
  margin:0;color:var(--ink);font:17px/1.72 var(--font);
  background-color:var(--paper-2);
  background-image:radial-gradient(rgba(58,43,33,.07) 1px,transparent 1px);
  background-size:7px 7px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--link);text-decoration:none;border-bottom:1px solid rgba(138,74,30,.35)}
a:hover{color:var(--link-hi);border-bottom-color:var(--link-hi)}
a:focus-visible{outline:2px solid var(--brass);outline-offset:3px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;background:var(--paper-2);padding:8px 12px;z-index:60;border:2px solid var(--ink)}

/* ---------- ribbon ---------- */
.ribbon{background:var(--ink);color:#f3e5c6;font:600 12.5px/1.5 var(--mono);letter-spacing:.09em;text-transform:uppercase}
.ribbon .wrap{padding:8px 22px;text-align:center}

/* ---------- topbar ---------- */
.topbar{position:sticky;top:0;z-index:30;background:var(--paper-2);
  border-bottom:2px solid var(--ink);box-shadow:0 1px 0 var(--brass),0 6px 14px rgba(58,43,33,.10)}
.topbar .bar{display:flex;align-items:center;gap:16px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);border:0;
  font:700 15.5px/1.2 var(--display);max-width:46%}
.brand img{width:42px;height:42px;border:2px solid var(--ink);border-radius:50%;
  box-shadow:0 0 0 2px var(--paper-2),0 0 0 3.5px var(--brass);flex:0 0 auto}
.brand span{display:block}
.nav{margin-left:auto;display:flex;align-items:center;gap:13px}
.nav ul{display:flex;gap:4px;margin:0;padding:0;list-style:none;flex-wrap:wrap}
.nav li{position:relative}
.nav a{color:var(--ink);border:0;font:600 14.5px/1 var(--display);letter-spacing:.02em;
  padding:9px 8px;display:inline-flex;align-items:center;gap:5px;border-radius:3px}
.nav a:hover{background:var(--paper-3);color:var(--ink)}
.nav .caret{font-style:normal;font-size:10px;color:var(--brass-dk);line-height:1}
.nav .active > a{color:var(--brick);box-shadow:inset 0 -2px 0 var(--brick)}
.nav .kids{display:none;position:absolute;top:100%;left:0;z-index:41;min-width:214px;
  background:var(--paper);border:2px solid var(--ink);padding:7px;flex-direction:column;gap:2px;
  box-shadow:4px 4px 0 rgba(58,43,33,.22)}
.nav .kids::before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px;pointer-events:none}
.nav .has-kids:hover .kids,.nav .has-kids:has(:focus-visible) .kids{display:flex}
.nav .has-kids::after{content:"";position:absolute;left:0;right:0;top:100%;height:11px}
.nav .kids a{display:block;padding:7px 10px;font-weight:400;font-size:14px;border-left:3px solid transparent}
.nav .kids a:hover{background:var(--paper-3);border-left-color:var(--brass)}
.nav .cta{background:linear-gradient(180deg,#e9c378,var(--brass));color:#241a12;border:2px solid var(--ink);
  border-radius:3px;padding:9px 14px;font-weight:700;letter-spacing:.03em;
  box-shadow:3px 3px 0 rgba(58,43,33,.55)}
.nav .cta:hover{background:linear-gradient(180deg,#f0d18e,var(--brass-lt));transform:translate(-1px,-1px);
  box-shadow:4px 4px 0 rgba(58,43,33,.55)}
.langchip{font:600 12px/1 var(--mono);letter-spacing:.1em;color:var(--ink-soft);
  border:1.5px solid var(--line-strong);border-radius:2px;padding:6px 8px;background:var(--paper)}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--paper-2);border-bottom:2px solid var(--ink)}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:6px;pointer-events:none;
  background:repeating-linear-gradient(90deg,var(--brass) 0 10px,transparent 10px 20px);opacity:.55}
.hero-in{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:34px;align-items:center;
  padding:38px 22px 44px}
.hero-copy{min-width:0}
.eyebrow{font:700 11.5px/1.4 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--brick);margin:0 0 12px}
.hero h1{margin:0 0 14px;font:700 clamp(30px,3.6vw,46px)/1.12 var(--display);letter-spacing:-.005em}
.hero h1 .thin{display:block;font-weight:400;font-size:.62em;letter-spacing:.01em;color:var(--ink-soft);margin-top:6px}
.lead{margin:0 0 18px;font-size:17.5px;color:#4a382b;max-width:46ch}
.hero-cta{display:flex;gap:11px;flex-wrap:wrap;margin:0}
.btn{display:inline-block;border:2px solid var(--ink);border-radius:3px;padding:10px 17px;
  font:700 14px/1.2 var(--display);letter-spacing:.02em;color:#241a12;
  background:linear-gradient(180deg,#eccd8b,var(--brass-lt));box-shadow:3px 3px 0 rgba(58,43,33,.6)}
.btn:hover{transform:translate(-1px,-1px);box-shadow:4px 4px 0 rgba(58,43,33,.6);color:#241a12}
.btn.ghost{background:var(--paper);color:var(--ink);box-shadow:3px 3px 0 rgba(58,43,33,.35)}
.btn.ghost:hover{background:var(--paper-3)}
.hero-shot{position:relative;margin:0;min-width:0;padding:9px;background:var(--paper);
  border:2px solid var(--ink);box-shadow:5px 5px 0 rgba(58,43,33,.28)}
.hero-shot::before,.hero-shot::after{content:"";position:absolute;width:22px;height:22px;border:3px solid var(--brick);pointer-events:none}
.hero-shot::before{left:-8px;top:-8px;border-right:0;border-bottom:0}
.hero-shot::after{right:-8px;bottom:-8px;border-left:0;border-top:0}
.hero-shot img{width:100%;aspect-ratio:16/9;object-fit:contain;background:var(--paper);border:1px solid var(--line)}
.hero-shot figcaption{margin-top:8px;font:400 11.5px/1.45 var(--mono);letter-spacing:.04em;
  color:#5b4835;text-transform:uppercase}
.hero-tag{position:absolute;right:-10px;top:14px;z-index:2;transform:rotate(-3deg);
  background:var(--seal);color:#f7ebd2;font:700 11px/1 var(--mono);letter-spacing:.12em;
  text-transform:uppercase;padding:7px 11px;border:2px solid var(--ink);box-shadow:2px 2px 0 rgba(58,43,33,.5)}

/* ---------- fact plaques ---------- */
.facts-strip{background:var(--ink);border-bottom:2px solid var(--ink)}
.facts{display:flex;flex-wrap:wrap;gap:0}
.fact{flex:1 1 0;min-width:150px;padding:13px 16px;border-left:1px solid rgba(246,236,214,.18)}
.fact:first-child{border-left:0}
.fact-k{display:block;font:700 10.5px/1.4 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--brass-lt)}
.fact-v{display:block;font:400 15px/1.3 var(--display);color:#f4e7cb;margin-top:3px}

/* ---------- home ---------- */
.home{padding:34px 22px 46px}
.home-prose{font-size:17.5px}
.section-head{margin:34px 0 16px;padding-bottom:9px;border-bottom:2px solid var(--ink);
  display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.section-head::after{content:"";flex:1 1 60px;height:6px;align-self:center;
  background:repeating-linear-gradient(90deg,var(--brass) 0 8px,transparent 8px 16px);opacity:.5}
.overline{font:700 11px/1.4 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--brick)}
.section-head h2{margin:0;font:700 clamp(21px,2.3vw,27px)/1.2 var(--display);letter-spacing:-.005em}
.count-pill{display:inline-block;margin-left:9px;font:700 12px/1 var(--mono);color:var(--paper);
  background:var(--brick);border-radius:11px;padding:4px 8px;vertical-align:middle}

/* ---------- cards ---------- */
.grid{display:flex;flex-wrap:wrap;gap:22px}
.card{flex:1 1 300px;max-width:100%;display:flex;flex-direction:column;background:var(--paper);
  border:2px solid var(--ink);border-radius:var(--radius);color:var(--ink);overflow:hidden;
  box-shadow:4px 4px 0 rgba(58,43,33,.2);transition:transform .12s ease,box-shadow .12s ease}
.card:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 rgba(58,43,33,.26);color:var(--ink)}
.thumb{position:relative;display:block;background:var(--paper-3);border-bottom:2px solid var(--ink)}
.thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.thumb.contain img{object-fit:contain;padding:10px}
.pill-tag{position:absolute;left:9px;top:9px;background:var(--seal);color:#f7ebd2;
  font:700 10px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;padding:5px 8px;border:1.5px solid var(--ink)}
.card-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:7px;flex:1}
.card-body h3{margin:0;font:700 18px/1.25 var(--display)}
.card-body p{margin:0;font-size:14.5px;line-height:1.6;color:var(--ink-soft)}
.go{margin-top:auto;font:700 12px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--brick)}
.card.sm{flex:1 1 230px}
.card.sm h3{font-size:16.5px}

/* ---------- prose ---------- */
h2{font:700 clamp(22px,2.4vw,29px)/1.22 var(--display);margin:38px 0 12px;letter-spacing:-.005em}
h3{font:700 19px/1.3 var(--display);margin:26px 0 8px}
p{margin:0 0 15px}
ul,ol{margin:0 0 16px;padding-left:22px}
li{margin:0 0 7px}
strong{color:#241a12}
em{color:var(--ink-soft)}
code{font:400 14px/1.5 var(--mono);background:var(--paper-3);padding:1px 5px;border-radius:2px;overflow-wrap:anywhere}
blockquote{margin:20px 0;padding:12px 18px;border-left:4px solid var(--brass);background:var(--paper-2);
  font-style:italic;color:#4a382b}
blockquote p:last-child{margin-bottom:0}
.callout{margin:22px 0;padding:15px 18px;background:var(--paper-3);border:1px solid var(--line-strong);
  border-left:5px solid var(--brass);border-radius:var(--radius);font-size:16px}
.callout p:last-child{margin-bottom:0}
.callout.warn{border-left-color:var(--brick);background:#f4e2cb}
.hand{font-style:italic;color:var(--ink-faint);font-size:15.5px}

/* ---------- tables ---------- */
.tbl-wrap{margin:20px 0 24px;overflow-x:auto;border:2px solid var(--ink);border-radius:var(--radius);
  background:var(--paper);box-shadow:3px 3px 0 rgba(58,43,33,.16)}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--paper-3);font:700 12px/1.35 var(--mono);letter-spacing:.1em;
  text-transform:uppercase;color:#241a12;border-bottom:2px solid var(--ink)}
tbody tr:nth-child(even){background:var(--paper-4)}
tbody tr:last-child td{border-bottom:0}
td:first-child{font-weight:600}
table strong,table b{color:inherit}
td.num{text-align:right;font-family:var(--mono);font-size:14px}
.tbl-wrap table{min-width:520px}

/* ---------- gear divider ---------- */
.gear-rule{height:12px;margin:26px 0;position:relative;
  background:
    radial-gradient(circle at 6px 6px,var(--brass) 2.1px,transparent 2.4px) 0 0/18px 12px repeat-x,
    linear-gradient(180deg,transparent 5px,var(--line) 5px,var(--line) 6.5px,transparent 6.5px);
  opacity:.85}

/* ---------- article ---------- */
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 236px;gap:42px;
  padding:26px 22px 56px;align-items:start}
.article-grid > div{min-width:0}
.crumb{font:600 11.5px/1.5 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);
  margin:0 0 14px}
.crumb a{color:var(--ink-soft);border:0}
.crumb a:hover{color:var(--brick)}
.crumb .here{color:var(--brick)}
.crumb .sep{color:var(--brass)}
article{background:var(--paper);border:3px solid var(--ink);border-radius:var(--radius);
  padding:28px 32px 32px;box-shadow:5px 5px 0 rgba(58,43,33,.22),0 0 0 1px var(--brass);position:relative}
article::before{content:"";position:absolute;inset:6px;border:2px solid rgba(150,106,42,.7);
  border-radius:2px;pointer-events:none}
article h1{margin:0 0 10px;font:700 clamp(26px,3vw,38px)/1.16 var(--display);letter-spacing:-.01em}
.kicker{margin:0 0 8px;font:700 11px/1.4 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--brick)}
.art-meta{font:400 11.5px/1.5 var(--mono);letter-spacing:.09em;text-transform:uppercase;color:var(--ink-faint);margin:0}
.art-meta b{color:var(--ink-soft)}
.art-lead{font-size:17.5px;color:#4a382b;margin:0 0 6px;max-width:74ch}
.quick-answer{position:relative;margin:18px 0 26px;padding:16px 18px;background:var(--paper-2);
  border:1px solid var(--line-strong);border-left:5px solid var(--brick);border-radius:var(--radius)}
.quick-answer p{margin:0;font-size:16.5px}
.qa-stamp{display:inline-block;margin-bottom:7px;font:700 10.5px/1 var(--mono);letter-spacing:.16em;
  text-transform:uppercase;color:var(--paper);background:var(--brick);padding:5px 8px;border-radius:2px}

/* toc rail */
.toc{position:sticky;top:96px;padding:14px 15px;background:var(--paper-2);border:2px solid var(--ink);
  border-radius:var(--radius);box-shadow:4px 4px 0 rgba(58,43,33,.16)}
.toc .overline{display:block;margin-bottom:9px;padding-bottom:7px;border-bottom:1px solid var(--line)}
.toc-list{display:flex;flex-direction:column;gap:1px;font-size:13.5px;counter-reset:tc;margin:0;padding:0;list-style:none}
.toc-list a{color:var(--ink-soft);border:0;padding:5px 0 5px 24px;position:relative;line-height:1.4;display:block}
.toc-list a::before{counter-increment:tc;content:"0" counter(tc);position:absolute;left:0;top:5px;
  font:700 10px/1.5 var(--mono);color:var(--brass-dk)}
.toc-list a:hover{color:var(--brick)}

/* next reading */
.all-guides{margin-top:36px;padding-top:4px;border-top:2px solid var(--ink)}
.next-list{list-style:none;margin:0 0 10px;padding:0;display:flex;flex-direction:column;gap:8px}
.next-list li{margin:0;padding:9px 12px;background:var(--paper-2);border:1px solid var(--line);
  border-left:4px solid var(--brass);font-size:15px}
.next-list a{border:0;font-weight:600}
.all-more{margin:0;font:700 12px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase}

/* article images */
article img.zoom{width:100%;border:2px solid var(--ink);border-radius:2px;margin:6px 0 4px;
  box-shadow:4px 4px 0 rgba(58,43,33,.16);cursor:zoom-in}
figure{margin:22px 0}
figcaption{font:400 11.5px/1.5 var(--mono);letter-spacing:.04em;color:#5b4835;margin-top:7px;text-transform:uppercase}
.lightbox{position:fixed;inset:0;z-index:80;background:rgba(34,24,17,.9);display:flex;align-items:center;
  justify-content:center;padding:24px;cursor:zoom-out}
.lightbox img{max-width:96vw;max-height:92vh;width:auto;border:3px solid var(--paper)}

/* ---------- footer ---------- */
.foot{background:var(--ink);color:#e8d9bd;border-top:6px solid var(--brass);
  background-image:radial-gradient(rgba(246,236,214,.07) 1px,transparent 1px);background-size:7px 7px}
.foot .wrap{padding:28px 22px 32px}
.disclaimer{margin:0 0 12px;font-size:13.5px;line-height:1.65;color:#cdbb9c;max-width:80ch}
.foot-links{margin:0 0 8px;font:600 13px/1.6 var(--display)}
.foot-links a{color:var(--brass-lt);border:0;margin:0 2px}
.foot-links a:hover{color:#f6e2b6;text-decoration:underline}
.foot .muted{color:#cbb694;font-size:12.5px;font-family:var(--mono);letter-spacing:.03em}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .article-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .toc{position:static;order:-1}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:2px 14px}
  .toc-list a{padding-left:22px}
}
@media (max-width:860px){
  .hero-in{grid-template-columns:minmax(0,1fr);gap:22px;padding:26px 18px 32px}
  .hero-shot{order:-1}
  .brand{max-width:62%}
  .nav ul{gap:2px}
}
@media (max-width:720px){
  body{font-size:16.5px}
  .wrap{padding:0 16px}
  .topbar .bar{min-height:0;flex-wrap:wrap;padding:9px 0;gap:9px}
  .brand{max-width:100%;font-size:14.5px}
  .brand img{width:36px;height:36px}
  .nav{margin-left:0;width:100%;justify-content:flex-start;gap:8px;flex-wrap:wrap}
  .nav ul{gap:0}
  .nav a{font-size:13.5px;padding:8px 7px}
  .nav .kids{left:-4px;min-width:200px}
  .nav .cta{padding:8px 11px;font-size:13px}
  .langchip{padding:5px 7px}
  .home{padding:24px 16px 38px}
  .article-grid{padding:18px 16px 44px;gap:20px}
  article{padding:18px 16px 22px;box-shadow:3px 3px 0 rgba(58,43,33,.18)}
  article h1{font-size:26px}
  .card{flex:1 1 100%}
  .fact{min-width:50%;flex:1 1 50%}
  .hero-tag{right:0;top:8px;font-size:10px;padding:6px 9px}
  h2{font-size:22px}
  .section-head h2{font-size:20px}
  .tbl-wrap table{font-size:14px;min-width:460px}
  th,td{padding:8px 9px}
}

/* pointer-gated ad containers (unused until the parent session adds keys) */
.ad-slot{max-width:100%;overflow:hidden;margin:24px auto;max-width:var(--maxw)}
.ad-slot-native,.ad-slot-mobile{display:none}
@media (hover: hover) and (pointer: fine){.ad-slot-native{display:block}}
@media (hover:none),(pointer:coarse){.ad-slot-mobile{display:block}}
.ad-inner{max-width:100%;overflow:hidden;margin:0 auto}
.ad-banner-box{display:flex;justify-content:center}