/* Robot studies pages — article styling, hero art and lemon texture, as
   built by creator-0d, recoloured to the Optimistic Blue tokens (sun accent).
   Loaded only on /studies pages, after css/style.css (which already
   supplies .site-header/.site-nav/.site-footer/.wrap for the whole site —
   deliberately not duplicated here). */
:root{
  --measure:680px;
}

/* Textured ground: a faint citrus-peel stipple plus a soft lemon wash
   pooling at the top of the page. Behind the paper colour, never instead
   of it — scoped to studies pages only via this stylesheet. */
body{
  background-color:var(--surface);
  background-image:
    radial-gradient(ellipse 900px 420px at 15% -8%, rgba(255,194,51,.16), transparent 60%),
    radial-gradient(ellipse 700px 360px at 100% 0%, rgba(255,194,51,.10), transparent 55%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0.102 0 0 0 0 0.337 0 0 0 0 0.859 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat:no-repeat,no-repeat,repeat;
  background-attachment:fixed;
}

/* Page hero */
.study-hero{
  background:
    radial-gradient(ellipse 640px 300px at 82% -20%, rgba(255,194,51,.30), transparent 62%),
    linear-gradient(180deg,var(--surface-lemon) 0%,var(--surface) 100%);
  border-bottom:1px solid var(--border);
  position:relative;overflow:hidden;
}
.study-hero .wrap{padding-block:72px 56px}
.study-hero::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 1 0 0 0 0 0.76 0 0 0 0 0.2 0 0 0 0.06 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E")}
.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--fresh-ink);margin:0 0 18px;display:flex;align-items:center;gap:12px}
.study-hero h1{font-family:var(--font-body);font-weight:400;font-size:clamp(30px,4vw,46px);line-height:1.12;letter-spacing:-0.02em;color:var(--ink);margin:0;max-width:20ch}
.study-hero h1.long{max-width:30ch;font-size:clamp(27px,3.3vw,38px)}
.study-question{font-family:var(--font-body);font-style:italic;font-size:clamp(19px,2vw,23px);line-height:1.4;color:var(--ink-muted);margin:20px 0 0;max-width:34ch}

.hero-grid{display:flex;align-items:center;justify-content:space-between;gap:32px;position:relative}
.hero-text{max-width:640px;position:relative;z-index:1}
.hero-art{width:min(400px,38vw);height:auto;flex:0 0 auto;position:relative;z-index:1}
.lemon-slice{vertical-align:-5px;margin-right:2px}
@media(max-width:900px){.hero-grid{flex-direction:column;align-items:flex-start}.hero-art{width:min(320px,80vw)}}

/* Article */
article{padding-block:56px 0}
article h2{font-family:var(--font-body);font-weight:400;font-size:30px;line-height:1.2;letter-spacing:-0.015em;color:var(--ink);margin:72px 0 18px;padding-top:28px;border-top:1px solid var(--border);max-width:var(--measure);display:flex;align-items:center;gap:14px}
article h2 span{display:block}
article > h2:first-child{margin-top:0;border-top:0;padding-top:0}
article h3{font-family:var(--font-body);font-weight:500;font-size:23px;line-height:1.3;letter-spacing:-0.01em;color:var(--ink);margin:48px 0 12px;max-width:var(--measure)}
article p{margin:0 0 20px;max-width:var(--measure);color:var(--ink-muted);font-size:17.5px;line-height:1.65}
article h2:first-child + p{font-size:20px;line-height:1.55;color:var(--ink)}
article strong{color:var(--ink);font-weight:600}
article a{color:var(--brand);text-decoration:none}
article a:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px}
article ol,article ul{font-size:17px;line-height:1.6;padding-left:1.3em;max-width:var(--measure);margin:0 0 24px;color:var(--ink-muted)}
article li{margin-bottom:12px}
article li::marker{color:var(--lemon-ink);font-family:var(--mono);font-size:.85em}
article code{font-family:var(--mono);font-size:.86em;background:var(--surface-alt);padding:2px 6px;border-radius:6px;color:var(--ink)}
article pre{background:var(--surface-alt);border-left:3px solid var(--lemon);border-radius:var(--radius);padding:18px 20px;overflow-x:auto;margin:0 0 24px;max-width:var(--measure)}
article pre code{background:none;padding:0;font-size:13.5px;line-height:1.6;color:var(--ink-muted);white-space:pre}
article .code-cap{font-family:var(--mono);font-size:11.5px;color:var(--ink-muted);margin:-10px 0 14px}
article hr{border:none;border-top:1px solid var(--border);margin:64px 0 0}
.h-icon{flex:0 0 auto}

.table-scroll{overflow-x:auto;margin-block:28px;max-width:920px}
article table{width:100%;border-collapse:collapse;font-size:16px;line-height:1.5}
article th{font-family:var(--mono);font-weight:500;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--lemon-ink);background:var(--surface-lemon);text-align:left;padding:11px 14px;border-bottom:3px solid var(--lemon);vertical-align:bottom}
article td{padding:12px 14px;border-bottom:1px solid var(--border);vertical-align:top;color:var(--ink-muted)}
article tbody tr:nth-child(even) td{background:rgba(255,244,214,.45)}
article td:first-child{color:var(--ink)}

article blockquote{background:var(--surface-raised);border:1px solid var(--border);border-radius:var(--radius-lg);border-left:4px solid var(--lemon);box-shadow:var(--shadow);margin:28px 0;padding:24px 30px;max-width:var(--measure);font-size:18.5px;line-height:1.55;color:var(--ink)}
article blockquote p{margin:0 0 12px}
article blockquote p:last-child{margin-bottom:0}
article blockquote.outcome{background:var(--surface-lemon);border-color:rgba(255,194,51,.5);border-left-color:var(--lemon);box-shadow:none;font-size:17px;color:var(--ink)}
article p + blockquote.outcome{margin-top:6px}

/* Conversation */
.conversation-turn{box-shadow:var(--shadow);border-radius:var(--radius-md);padding:16px 22px 18px;margin:14px 0;font-size:17.5px;max-width:600px}
.conversation-turn.janice{border-left-color:var(--brand);margin-left:0}
.conversation-turn.tom{border-left-color:var(--fresh-ink);margin-left:clamp(0px,8vw,80px)}
.speaker{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:6px}
.janice .speaker{color:var(--brand)}
.tom .speaker{color:var(--fresh-ink)}
.stage-note{font-family:var(--mono);font-size:12px;line-height:1.6;color:var(--lemon-ink);background:var(--surface-lemon);border-left:4px solid var(--lemon);border-radius:var(--radius);padding:12px 16px;margin:22px 0;max-width:600px}
.stage-note em{font-style:normal}

/* Figures: SVG diagrams and charts */
figure.figure{margin:32px 0 30px;max-width:var(--measure)}
figure.figure.wide{max-width:100%}
figure.figure svg{width:100%;height:auto;display:block;background:var(--surface-raised);border:1px solid var(--border);border-radius:var(--radius-md)}
figure.figure svg.chart{padding:14px 18px 10px;box-sizing:border-box}
figure.figure svg.hero-art{border:0;background:none;padding:0}
figure.figure figcaption{font-family:var(--mono);font-size:12px;line-height:1.5;color:var(--ink-muted);margin-top:10px;max-width:var(--measure)}
figure.figure .mark{cursor:default}
figure.figure .mark:hover circle:first-of-type{opacity:.85}

/* Study cards and pager */
.study-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin:28px 0 0}
.study-card{position:relative;display:block;background:var(--surface-raised);border:1px solid var(--border);border-top:4px solid var(--lemon);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:24px 24px 26px;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease}
.study-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);text-decoration:none}
.study-card .kicker{margin-bottom:10px}
.study-card .kicker::before{display:none}
.study-card h3{margin:0 0 8px;font-size:24px;font-weight:400;color:var(--ink)}
.study-card p{margin:0;font-size:16px;line-height:1.5;font-style:italic;color:var(--ink-muted)}
.study-card::after{content:"";position:absolute;top:16px;right:16px;width:14px;height:14px;border-radius:50%;background:var(--lemon);opacity:.55}

/* Group tiles — studies.html top-level index, one row per group of studies.
   Same card language as the blog grid (surface-raised, hairline border,
   card shadow), laid out as a row with the graphic on the left. */
.group-grid{display:flex;flex-direction:column;gap:24px;margin:32px 0 0}
.group-card{
  display:flex;align-items:stretch;gap:0;
  background:var(--surface-raised);border:1px solid var(--border);
  border-radius:var(--radius-xl);box-shadow:var(--shadow);
  text-decoration:none;color:var(--ink);overflow:hidden;
}
.group-card:hover{text-decoration:none;border-color:var(--brand-border);box-shadow:var(--shadow-hover)}
.group-card .group-art{
  flex:0 0 260px;display:flex;align-items:center;justify-content:center;
  padding:20px;background:var(--surface-alt);border-right:1px solid var(--border);
}
.group-card .group-art svg{display:block;width:100%;height:auto;max-height:160px}
.group-card .group-body{flex:1;min-width:0;padding:26px 28px;display:flex;flex-direction:column;gap:10px;justify-content:center}
.group-card .group-count{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--fresh-ink);margin:0}
.group-card h3{margin:0;font-size:26px;font-weight:400;color:var(--ink)}
.group-card p{margin:0;font-size:16.5px;line-height:1.55;color:var(--ink-muted);max-width:60ch}
@media (max-width:640px){
  .group-card{flex-direction:column}
  .group-card .group-art{flex:0 0 auto;border-right:0;border-bottom:1px solid var(--border)}
}
.pager{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 24px;margin-top:64px;padding-top:24px;border-top:1px solid var(--border);font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.pager a{color:var(--brand);text-decoration:none}
.pager a:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px}

/* About this document */
.doc-meta-block{margin-top:72px;border-top:2px solid var(--ink);padding-top:8px}
.doc-meta-block h2{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-muted);border:0;margin:18px 0 6px;padding:0;display:block}
article table.doc-meta th,article table.doc-meta td{font-family:var(--mono);font-size:11.5px;line-height:1.55;background:none}
article table.doc-meta th{color:var(--ink-muted);border-bottom:1px solid var(--border);padding:10px 14px}
article table.doc-meta td{color:var(--ink);padding:10px 14px}
article table.doc-meta tbody tr:nth-child(even) td{background:none}

@media(max-width:640px){body{font-size:16.5px}.study-hero .wrap{padding-block:48px 40px}article h2{font-size:26px;margin-top:56px}article blockquote{padding:18px 20px}}