/* Satified static pages: shared system. Zero JS, fast, editorial. */
@font-face{font-family:'Instrument Serif';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/instrument-serif-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'Instrument Serif';font-style:italic;font-weight:400;font-display:swap;src:url('/fonts/instrument-serif-latin-400-italic.woff2') format('woff2')}
@font-face{font-family:'Instrument Sans';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/instrument-sans-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'Instrument Sans';font-style:normal;font-weight:500;font-display:swap;src:url('/fonts/instrument-sans-latin-500-normal.woff2') format('woff2')}
@font-face{font-family:'DM Mono';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/dm-mono-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'Ballet';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/ballet-latin-400-normal.woff2') format('woff2')}

:root{
  --paper:#E5E3DC;--paper-deep:#D6D3C8;--card:#EDEBE4;
  --ink:#332F22;--ink-soft:#55503F;--ink-faint:#67614F;   /* 4.8:1 on paper */
  --night:#0A0901;--gold:#E8B900;--bronze:#9D6E46;--cream:#E9E6DA;
  --bronze-ink:#85572F;   /* 4.8:1 on paper — bronze for small text (--bronze is 3.4:1, large only) */
  --serif:'Instrument Serif',Georgia,serif;
  --sans:'Instrument Sans',-apple-system,sans-serif;
  --mono:'DM Mono',ui-monospace,monospace;
  --script:'Ballet',cursive;
  --ease:cubic-bezier(.76,0,.24,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scrollbar-width:none}
html::-webkit-scrollbar{display:none}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16.5px;line-height:1.65;-webkit-font-smoothing:antialiased}
::selection{background:var(--gold);color:var(--night)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
a{color:inherit}

.wrap{max-width:1060px;margin:0 auto;padding:0 clamp(18px,4vw,40px)}

/* header */
.pg-header{display:flex;align-items:center;justify-content:space-between;padding:clamp(16px,2.5vw,26px) 0}
.brand{text-decoration:none;font-size:1.4rem;line-height:1}
.brand .b1{font-family:var(--serif)}
.brand .b2{font-family:var(--script);color:var(--gold);margin-left:.05em}

/* the gold ribbon mark. It is masked by its own silhouette so the specular
   sweep below is clipped to the ribbon rather than to its bounding box. */
.brand-mark{
  display:inline-block;position:relative;
  width:1.04em;height:1.04em;margin-right:.26em;vertical-align:-.17em;
  background:url('/logo-mark.png') center/contain no-repeat;
  -webkit-mask:url('/logo-mark.png') center/contain no-repeat;
  mask:url('/logo-mark.png') center/contain no-repeat;
}
.brand-mark::after{
  content:'';position:absolute;
  top:-35%;bottom:-35%;left:-90%;width:38%;
  background:linear-gradient(90deg,rgba(255,255,255,0) 25%,rgba(255,255,255,.9) 50%,rgba(255,255,255,0) 75%);
  transform:translateX(0) rotate(18deg);
  opacity:0;
}
.brand:hover .brand-mark::after,
.brand:focus-visible .brand-mark::after{animation:brand-gleam .9s ease-out}
@keyframes brand-gleam{
  0%{opacity:0;transform:translateX(0) rotate(18deg)}
  15%{opacity:1}
  85%{opacity:1}
  100%{opacity:0;transform:translateX(580%) rotate(18deg)}
}
@media (prefers-reduced-motion:reduce){
  .brand:hover .brand-mark::after,
  .brand:focus-visible .brand-mark::after{animation:none}
}

.pg-nav{display:flex;gap:clamp(10px,2.5vw,26px);align-items:center;font-family:var(--mono);font-size:.78rem;letter-spacing:.08em}
.pg-nav a{text-decoration:none;transition:color .3s var(--ease)}
.pg-nav a:hover{color:var(--bronze)}
.pg-nav .cta{border:1px solid var(--ink);padding:8px 13px;border-radius:2px}
.pg-nav .cta:hover{background:var(--gold);border-color:var(--gold);color:var(--night)}

/* breadcrumbs */
.crumbs{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--ink-faint);margin:1.6rem 0 0}
.crumbs a{color:inherit;text-decoration:none}
.crumbs a:hover{color:var(--bronze)}
.crumbs span{margin:0 .5em}

/* hero block */
.pg-hero{padding:clamp(28px,6vh,64px) 0 clamp(22px,4vh,44px)}
.eyebrow{font-family:var(--mono);font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;color:var(--bronze-ink);font-weight:500}
h1{font-family:var(--serif);font-weight:400;font-size:clamp(2.2rem,6vw,4.4rem);line-height:1.04;letter-spacing:-.02em;margin:.35em 0 .3em;text-wrap:balance}
h1 .accent{font-family:var(--script);color:var(--bronze);font-size:1.05em}
.lede{max-width:62ch;font-size:clamp(1rem,1.4vw,1.18rem);color:var(--ink-soft)}

/* sections */
main section{margin:clamp(34px,7vh,72px) 0}
h2{font-family:var(--serif);font-weight:400;font-size:clamp(1.6rem,3.4vw,2.4rem);letter-spacing:-.015em;line-height:1.15;margin-bottom:.6em}
h3{font-family:var(--serif);font-weight:400;font-size:1.25rem;margin-bottom:.4em}
p{max-width:68ch}
p+p{margin-top:.9em}
em{font-family:var(--serif);font-style:italic}
.note{font-family:var(--serif);font-style:italic;color:var(--ink-soft)}

/* fact box */
.facts{display:flex;flex-wrap:wrap;gap:10px;margin:1.2rem 0}
.facts li{list-style:none;border:1px solid rgba(51,47,34,.28);padding:8px 12px;font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;color:var(--ink-soft)}

/* pattern cards */
.patterns{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px;margin-top:1.2rem}
.pattern{background:var(--card);border:1px solid rgba(51,47,34,.14);padding:20px 22px}
.pattern .k{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;color:var(--bronze-ink);text-transform:uppercase}
.pattern h3{margin:.5em 0 .35em}
.pattern p{font-size:.92rem;color:var(--ink-soft)}

/* worked example */
.worked{background:var(--night);color:var(--cream);padding:clamp(22px,4vw,40px);margin-top:1.2rem}
.worked .k{font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;color:var(--gold);text-transform:uppercase}
.worked h3{color:var(--cream);margin-top:.7em}
.worked p{color:#C9C3B0}
.worked .q{font-size:1.08rem;color:var(--cream);margin:.8em 0}
.worked ol{margin:1em 0 0 1.2em}
.worked li{color:#C9C3B0;margin:.45em 0}
.worked .ans{color:var(--gold);font-family:var(--mono);letter-spacing:.06em;margin-top:1em}
.math{font-family:var(--serif);font-style:italic;white-space:nowrap}

/* traps list */
.traps{margin:1rem 0 0;padding:0;list-style:none}
.traps li{border-top:1px solid rgba(51,47,34,.22);padding:.85em 0;max-width:70ch}
.traps li strong{font-weight:500}

/* FAQ */
.faq{margin-top:1rem}
.faq div{border-top:1px solid rgba(51,47,34,.22);padding:1em 0}
.faq dt{font-family:var(--serif);font-size:1.15rem;margin-bottom:.35em}
.faq dd{color:var(--ink-soft);font-size:.95rem;max-width:70ch}

/* CTA */
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:1.4rem}
.btn{display:inline-block;text-decoration:none;font-family:var(--mono);font-size:.82rem;letter-spacing:.08em;border:1px solid var(--ink);padding:12px 18px;border-radius:2px;transition:all .3s var(--ease)}
.btn:hover{background:var(--gold);border-color:var(--gold);color:var(--night)}
.btn.dark{background:var(--night);color:var(--gold);border-color:var(--night)}
.btn.dark:hover{background:var(--gold);color:var(--night);border-color:var(--gold)}
.cta-band{background:var(--card);border:1px solid rgba(51,47,34,.14);padding:clamp(22px,4vw,36px);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px}
.cta-band .big{font-family:var(--serif);font-size:clamp(1.3rem,2.6vw,1.9rem);line-height:1.15}

/* link grids (hubs) */
.grid-links{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin-top:1.2rem}
.grid-links a{display:block;text-decoration:none;background:var(--card);border:1px solid rgba(51,47,34,.14);padding:20px 22px;transition:border-color .3s var(--ease),transform .3s var(--ease)}
.grid-links a:hover{border-color:var(--bronze);transform:translateY(-2px)}
.grid-links .k{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;color:var(--bronze-ink);text-transform:uppercase}
.grid-links h3{margin:.45em 0 .3em}
.grid-links p{font-size:.88rem;color:var(--ink-soft)}

/* related strip */
.related{display:flex;flex-wrap:wrap;gap:10px;margin-top:1rem}
.related a{font-family:var(--mono);font-size:.74rem;letter-spacing:.06em;text-decoration:none;border:1px solid rgba(51,47,34,.28);padding:8px 12px;transition:all .3s var(--ease)}
.related a:hover{background:var(--night);color:var(--gold);border-color:var(--night)}

/* footer */
.pg-footer{margin-top:clamp(50px,10vh,110px);background:var(--night);color:#8f8875}
.pg-footer .wrap{display:flex;flex-wrap:wrap;gap:18px 34px;align-items:center;justify-content:space-between;padding-top:26px;padding-bottom:26px;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em}
.pg-footer a{color:inherit;text-decoration:none}
.pg-footer a:hover{color:var(--gold)}
.pg-footer .fbrand{font-family:var(--serif);color:var(--cream);font-size:1.05rem}
.pg-footer .fbrand .b2{font-family:var(--script);color:var(--gold)}

/* scroll reveals (elements get .rv from pages.js; no JS = fully visible) */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.rv:nth-child(2){transition-delay:.07s}
.rv:nth-child(3){transition-delay:.14s}
.rv:nth-child(4){transition-delay:.2s}
.rv:nth-child(5){transition-delay:.26s}
.rv:nth-child(n+6){transition-delay:.3s}
.rv-in{opacity:1;transform:none}

@media (max-width:640px){
  .pg-nav .hide-m{display:none}
  .facts li{font-size:.66rem}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important}
  .rv{opacity:1;transform:none}
}

/* Data tables (comparison, evidence) */
.tbl-wrap{overflow-x:auto;margin:1.4rem 0;-webkit-overflow-scrolling:touch}
.tbl{width:100%;border-collapse:collapse;font-size:.92rem;min-width:560px}
.tbl caption{caption-side:bottom;text-align:left;color:var(--ink-faint);font-size:.78rem;margin-top:.6em;line-height:1.4}
.tbl th,.tbl td{border:1px solid rgba(51,47,34,.16);padding:.6em .72em;text-align:left;vertical-align:top}
.tbl thead th{font-family:var(--sans);font-weight:600;background:var(--card);color:var(--ink);font-size:.82rem;letter-spacing:.01em}
.tbl td{color:var(--ink-soft);line-height:1.5}
.tbl tbody tr:nth-child(even) td{background:rgba(51,47,34,.035)}
.tbl td strong{color:var(--ink);font-weight:600}
.post-meta{color:var(--ink-faint);font-family:var(--mono);font-size:.78rem;letter-spacing:.02em;margin:.2rem 0 0}
.post-body h2{margin-top:2.2rem}
.post-body h3{margin-top:1.5rem;font-family:var(--serif);font-size:1.28rem}
.post-body ul{margin:1rem 0 1rem 1.1rem;color:var(--ink-soft)}
.post-body ul li{margin:.4em 0;max-width:70ch}
.post-body p{max-width:70ch}
.src-note{color:var(--ink-faint);font-size:.82rem;border-top:1px solid rgba(51,47,34,.16);margin-top:2.4rem;padding-top:1rem}
.src-note a{color:var(--ink-soft)}
.blog-list{margin-top:1rem}
.blog-list article{border-top:1px solid rgba(51,47,34,.22);padding:1.3em 0}
.blog-list h2{font-family:var(--serif);font-size:1.4rem;margin:0 0 .3em}
.blog-list h2 a{color:var(--ink);text-decoration:none}
.blog-list h2 a:hover{color:var(--bronze)}
.blog-list p{color:var(--ink-soft);font-size:.96rem;max-width:74ch;margin:0}

/* AI tutor flagship */
.chip-row{display:flex;flex-wrap:wrap;gap:.5em;margin:1.2rem 0}
.chip-row span{font-family:var(--mono);font-size:.74rem;letter-spacing:.02em;color:var(--ink);background:var(--card);border:1px solid rgba(51,47,34,.16);border-radius:999px;padding:.35em .8em}
.chat{margin:1.3rem 0;border:1px solid rgba(51,47,34,.16);border-radius:10px;overflow:hidden;background:var(--card)}
.chat .turn{padding:.85em 1em;border-top:1px solid rgba(51,47,34,.1)}
.chat .turn:first-child{border-top:none}
.chat .who{font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-faint);display:block;margin-bottom:.35em}
.chat .u{background:rgba(51,47,34,.035)}
.chat .t .who{color:var(--bronze-ink)}
.chat p{margin:0;max-width:none;color:var(--ink);font-size:.95rem;line-height:1.55}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:1.5rem 0}
.card{border:1px solid rgba(51,47,34,.16);border-radius:10px;padding:1.1em 1.15em;background:var(--card)}
.card h3{margin:0 0 .35em;font-family:var(--serif);font-size:1.22rem}
.card p{margin:0 0 .6em;font-size:.9rem;color:var(--ink-soft);max-width:none}
.card .skills{display:flex;flex-wrap:wrap;gap:.4em}
.card .skills a{font-size:.78rem;color:var(--bronze-ink);text-decoration:none;border:1px solid rgba(157,110,70,.35);border-radius:999px;padding:.15em .62em}
.card .skills a:hover{background:rgba(157,110,70,.1)}
/* Photographs of the founder. Same rules as the screenshots: lazy, sized, below
   the fold. .photo keeps a light background since these are not dark UI shots. */
.photo img{background:var(--card)}
.photo.portrait{max-width:340px}

/* Two image switcher. Without JS the first image simply stays visible. */
.photo-switch{margin:1.8rem 0}
.photo-switch-btns{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:.9rem}
.photo-switch-btns button{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;
  padding:8px 13px;cursor:pointer;
  background:none;color:var(--ink-soft);
  border:1px solid rgba(51,47,34,.28);border-radius:2px;
  transition:all .25s var(--ease);
}
.photo-switch-btns button:hover{border-color:var(--bronze-ink);color:var(--ink)}
.photo-switch-btns button[aria-pressed="true"]{
  background:var(--night);border-color:var(--night);color:var(--gold);
}
.photo-switch-btns button:focus-visible{outline:2px solid var(--focus,#7A6000);outline-offset:2px}
.photo-switch figure[hidden]{display:none}
/* cap the height so a portrait and a landscape shot sit at a similar scale
   instead of the portrait running to 1400px tall in a full width column */
.photo-switch figure img{max-height:520px;width:auto;max-width:100%;margin-inline:auto}
@media (max-width:640px){.photo-switch figure img{max-height:400px}}

/* Product screenshots. Every one is lazy loaded and sits below the fold, and
   carries width/height so it reserves space and cannot shift layout. */
.shot{margin:1.8rem 0;padding:0}
.shot img{
  display:block;width:100%;height:auto;
  border:1px solid rgba(51,47,34,.22);border-radius:10px;
  background:var(--night);
}
.shot figcaption{
  margin-top:.7em;font-size:.82rem;line-height:1.5;color:var(--ink-faint);
  font-family:var(--mono);letter-spacing:.01em;max-width:70ch;
}
.shot figcaption strong{color:var(--ink-soft);font-weight:500}

/* Author box: the experience signal, repeated consistently under every article */
.author-box{
  border-top:1px solid rgba(51,47,34,.18);
  margin:3rem 0 0;padding:1.4rem 0 0;
  display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap;
}
.author-box .ab-mark{
  flex:none;width:44px;height:44px;border-radius:50%;
  background:var(--night) url('/logo-mark.png') center/62% no-repeat;
}
.author-box .ab-body{flex:1;min-width:260px}
.author-box .ab-k{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--bronze-ink);margin-bottom:.4em}
.author-box .ab-name{font-family:var(--serif);font-size:1.2rem;line-height:1.2;margin-bottom:.3em}
.author-box .ab-name a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--gold);text-underline-offset:3px}
.author-box p{font-size:.9rem;line-height:1.6;color:var(--ink-soft);max-width:68ch;margin:0}

.factbox{border:1px solid rgba(51,47,34,.2);border-left:3px solid var(--gold);border-radius:8px;padding:1em 1.2em;margin:1.5rem 0;background:var(--card)}
.factbox p{margin:.3em 0;font-size:.92rem;color:var(--ink);max-width:none}
.factbox .k{font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:.5em}
.creator-top{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2rem;align-items:start}
@media (max-width:720px){.creator-top{grid-template-columns:1fr}}
.photo-ph{width:240px;max-width:100%;aspect-ratio:4/5;border:1px dashed rgba(51,47,34,.38);border-radius:12px;background:var(--card);display:flex;align-items:center;justify-content:center;text-align:center;color:var(--ink-faint);font-family:var(--mono);font-size:.76rem;letter-spacing:.05em;text-transform:uppercase;padding:1em}
.cred-list{list-style:none;margin:1.2rem 0;padding:0}
.cred-list li{border-top:1px solid rgba(51,47,34,.16);padding:.7em 0;color:var(--ink-soft);font-size:.95rem;max-width:70ch}
.cred-list li strong{color:var(--ink);font-weight:600}

@media (max-width:640px){
  .post-body h3{font-size:1.15rem}
  .blog-list h2{font-size:1.2rem}
}