/* Fitera content pages: the home page's tokens, tuned for long reading.
   Sources for every number: docs/research/content-page-design.md */
@font-face{font-family:"Big Shoulders Display";font-weight:700 800;font-display:swap;src:url(/assets/fonts/big-shoulders-display.woff2) format("woff2")}
@font-face{font-family:"Instrument Sans";font-weight:400 700;font-display:swap;src:url(/assets/fonts/instrument-sans.woff2) format("woff2")}
@font-face{font-family:"JetBrains Mono";font-weight:400 500;font-display:swap;src:url(/assets/fonts/jetbrains-mono.woff2) format("woff2")}
:root{
  --canvas:#131110;
  --panel:#1c1917;
  --panel-2:#23201d;
  --accent:#c8321f;           /* marks and text >= 24px only (3.53:1) */
  --accent-press:#d23a26;     /* button hover: white text 4.80:1 */
  --accent-text:#ef6b55;      /* small red text: >= 5.3:1 on every surface */
  --focus:#e0503a;
  --text-primary:#f1ece3;
  --text-secondary:#aaa39a;
  --glow:#ffd9a8;
  --link-line:rgba(255,217,168,.6);
  --line:rgba(241,236,227,.14);
  --line-strong:rgba(241,236,227,.42);
  --gut:20px;
  --measure:32em;
  --rail:240px;
  --ease-out:cubic-bezier(.16,1,.3,1);
  --f-display:"Big Shoulders Display","Arial Narrow","Helvetica Neue",sans-serif;
  --f-body:"Instrument Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
:root{color-scheme:dark}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
html{-webkit-text-size-adjust:100%;scroll-padding-top:72px}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;background:var(--canvas);color:var(--text-primary);font-family:var(--f-body);font-size:1.0625rem;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;overflow-x:clip}
@media (min-width:768px){body{font-size:1.125rem;line-height:1.65}}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:
  radial-gradient(40% 30% at 12% 0%,rgba(200,110,50,.09),transparent 70%),
  radial-gradient(40% 35% at 95% 10%,rgba(90,115,140,.08),transparent 70%)}
img{max-width:100%;height:auto;display:block}
strong,b{font-weight:500}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:4px}
.skip{position:fixed;left:16px;top:-60px;z-index:100;background:var(--accent);color:#fff;padding:.6rem 1rem;border-radius:10px;text-decoration:none}
.skip:focus{top:16px}

/* links: colour plus underline, never colour alone */
a{color:inherit}
.prose a:not(.btn),.meta a,.notes a,.author-box a,.site-footer a{text-decoration:underline;text-decoration-color:var(--link-line);text-decoration-thickness:.08em;text-underline-offset:3px;transition:text-decoration-color .25s var(--ease-out),color .25s var(--ease-out)}
.prose a:not(.btn):hover,.meta a:hover,.notes a:hover,.author-box a:hover,.site-footer a:hover{text-decoration-color:var(--glow);color:var(--glow)}

/* header: opaque, tucks away on scroll-down (content.js) */
.site-nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:1rem;height:60px;padding-inline:var(--gut);background:var(--canvas);border-bottom:1px solid var(--line);transition:transform .35s var(--ease-out)}
.site-nav.tuck{transform:translateY(-100%)}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;font-family:var(--f-display);font-weight:800;font-size:1.35rem;letter-spacing:.06em}
.brand svg{width:22px;height:22px;flex:none}
.site-nav ul{display:flex;gap:1.6rem;list-style:none;margin:0;padding:0}
.site-nav ul a{text-decoration:none;font-size:.95rem;color:var(--text-secondary)}
.site-nav ul a:hover,.site-nav ul a[aria-current=page]{color:var(--text-primary)}
@media (max-width:760px){.site-nav ul{display:none}}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;min-height:44px;padding:.8rem 1.3rem;border-radius:12px;font:500 1rem/1.2 var(--f-body);text-decoration:none;border:1px solid transparent;cursor:pointer;transition:background-color .25s var(--ease-out),border-color .25s var(--ease-out)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-press)}
.btn-ghost{border-color:var(--line-strong);color:var(--text-primary)}
.btn-ghost:hover{border-color:var(--text-primary)}
.site-nav .btn{min-height:44px;padding:.55rem 1rem;font-size:.92rem}

/* layout: one column; a sticky contents rail from 1024px */
.page{padding-inline:var(--gut);padding-block:28px 72px}
.page-head,.page-body{max-width:var(--measure);margin-inline:auto}
@media (min-width:600px){:root{--gut:40px}}
@media (min-width:1024px){
  :root{--gut:56px}
  .page{display:grid;grid-template-columns:var(--rail) minmax(0,var(--measure)) minmax(0,1fr);column-gap:48px}
  .page-head,.page-body{grid-column:2;margin-inline:0;max-width:none}
  .toc-rail{grid-column:1;grid-row:1 / span 2}
  .page.solo{display:block}
  .page.solo .page-head,.page.solo .page-body{margin-inline:auto;max-width:var(--measure)}
}

/* type */
.eyebrow{margin:0 0 1rem;font:400 .8125rem/1.4 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary)}
.eyebrow a{text-decoration:none}
.eyebrow a:hover{color:var(--text-primary)}
.eyebrow .sep{margin-inline:.5em;opacity:.6}
h1,.prose h2{font-family:var(--f-display);font-weight:800;text-transform:uppercase;margin:0;text-wrap:balance}
h1{font-size:clamp(2.4rem,6vw,4rem);line-height:1.02;letter-spacing:.005em}
.prose h2{font-size:1.75rem;line-height:1.1;letter-spacing:.01em;margin:56px 0 16px}
@media (min-width:1024px){.prose h2{font-size:2.5rem;margin-top:72px}}
.prose h3{font:500 1.25rem/1.3 var(--f-body);margin:32px 0 8px}
@media (min-width:768px){.prose h3{font-size:1.375rem}}
.prose p,.prose ul,.prose ol{margin:0 0 1em}
.prose ul,.prose ol{padding-left:1.25em}
.prose li{margin-bottom:.5em}
.prose li::marker{color:var(--text-secondary)}
.prose .lead{font-size:1.125em;line-height:1.55;color:var(--text-primary)}
.muted{color:var(--text-secondary)}

/* byline and dates */
.meta{display:flex;align-items:center;gap:.75rem;margin:1.25rem 0 1.5rem;font:400 .8125rem/1.5 var(--f-mono);letter-spacing:.04em;color:var(--text-secondary)}
.meta p{margin:0}
.meta .who{font-family:var(--f-body);font-size:.95rem;letter-spacing:0;color:var(--text-primary)}
.avatar{flex:none;display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--panel-2);border:1.5px solid rgba(255,217,168,.5);font:500 .8rem/1 var(--f-mono);color:var(--glow)}
.avatar.lg{width:64px;height:64px;font-size:1.05rem}

/* answer first */
.answer{margin:0 0 1.5rem;padding-left:18px;border-left:3px solid var(--accent);font-size:1.125em;line-height:1.55}

/* callouts */
.note{margin:1.25rem 0;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--panel);font-size:.95em}
.note .label{display:block;margin-bottom:.35rem;font:400 .8125rem/1.4 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--glow)}
.note p:last-child{margin-bottom:0}

/* contents: <details> below 1024px, sticky rail above */
.toc{margin:0 0 1.5rem;border:1px solid var(--line);border-radius:12px;background:var(--panel)}
.toc summary{display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 16px;cursor:pointer;font:400 .8125rem/1 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary);list-style:none}
.toc summary::-webkit-details-marker{display:none}
.toc summary::after{content:"+";font-size:1.1rem;color:var(--glow)}
.toc[open] summary::after{content:"–"}
.toc ol{list-style:none;margin:0;padding:0 8px 8px}
.toc a{display:flex;align-items:center;min-height:44px;padding:0 8px;border-radius:8px;text-decoration:none;font-size:.95rem;color:var(--text-secondary)}
.toc a:hover,.toc a.on{color:var(--text-primary);background:var(--panel-2)}
.toc-rail{display:none}
@media (min-width:1024px){
  .toc-inline{display:none}
  .toc-rail{display:block;position:sticky;top:96px;align-self:start;max-height:calc(100vh - 120px);overflow:auto}
  .toc-rail .toc-title{margin:0 0 .75rem;font:400 .8125rem/1.4 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary)}
  .toc-rail ol{list-style:none;margin:0;padding:0;border:0;border-left:1px solid var(--line);border-radius:0;background:none}
  .toc-rail a{display:block;min-height:0;border-radius:0;background:none;padding:.45rem 0 .45rem 14px;margin-left:-1px;border-left:2px solid transparent;text-decoration:none;font-size:.9rem;line-height:1.35;color:var(--text-secondary)}
  .toc-rail a:hover{color:var(--text-primary);background:none}
  .toc-rail a.on{color:var(--text-primary);background:none;border-left-color:var(--glow)}
}

/* comparison tables */
.table-hint{margin:0 0 .5rem;font:400 .8125rem/1.4 var(--f-mono);letter-spacing:.06em;color:var(--text-secondary)}
.table-wrap{overflow-x:auto;overscroll-behavior-x:contain;margin:0 calc(-1 * var(--gut)) 1rem;padding-inline:var(--gut)}
.table-wrap:focus-visible{outline-offset:-2px}
.table-wrap table{border-collapse:separate;border-spacing:0;font-size:.9375rem;line-height:1.4}
.table-title{margin:0 0 .75rem;font-weight:500;color:var(--text-primary)}
.table-title span{display:block;font:400 .8125rem/1.4 var(--f-mono);letter-spacing:.04em;color:var(--text-secondary)}
.table-wrap th,.table-wrap td{padding:12px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);min-width:168px}
.table-wrap thead th{font:400 .8125rem/1.3 var(--f-mono);text-transform:uppercase;letter-spacing:.08em;color:var(--text-secondary);border-bottom-color:var(--line-strong)}
.table-wrap tbody th{position:sticky;left:0;z-index:1;min-width:112px;max-width:112px;background:var(--canvas);border-right:1px solid var(--line-strong);font-weight:500}
.table-wrap thead th:first-child{position:sticky;left:0;z-index:2;background:var(--canvas);border-right:1px solid var(--line-strong)}
.table-wrap td ul{list-style:none;margin:0;padding:0}
.table-wrap td li{margin:0}
.table-wrap .num{font-variant-numeric:tabular-nums}
/* narrow tables (2-4 columns) fit a phone; only .wide tables keep 168px columns and scroll */
.table-wrap:not(.wide) :is(th,td){min-width:0}
.table-wrap:not(.wide) tbody th{min-width:96px;max-width:none}
@media (min-width:1024px){
  .table-wrap{margin-inline:0;padding-inline:0}
  .table-wrap tbody th,.table-wrap thead th:first-child{min-width:150px;max-width:150px}
}
/* from 1280px wide tables borrow the empty right column and fit without scrolling */
@media (min-width:1280px){
  .table-hint{display:none}
  .table-wrap th,.table-wrap td{min-width:0}
  .table-wrap.wide{margin-right:calc(-1 * clamp(0px, 100vw - 1060px, 340px))}
}
.notes{margin:0 0 1em;font-size:.9375rem;color:var(--text-secondary)}

/* definition rows inside sections (route facts) */
.facts{margin:1rem 0 1.25rem;border-top:1px solid var(--line)}
.facts div{display:grid;grid-template-columns:8.5rem 1fr;gap:12px;padding:.6rem 0;border-bottom:1px solid var(--line);font-size:.95em}
.facts dt{font:400 .8125rem/1.5 var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--text-secondary);padding-top:.15em}
.facts dd{margin:0}
@media (max-width:420px){.facts div{grid-template-columns:1fr;gap:2px}}

/* pros / cons pair */
.split{display:grid;gap:12px;margin:1rem 0 1.25rem}
@media (min-width:600px){.split{grid-template-columns:1fr 1fr}}
.split > div{padding:14px 16px;border:1px solid var(--line);border-radius:12px}
.split h3{margin:0 0 .5rem;font:400 .8125rem/1.4 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary)}
.split ul{margin:0;padding-left:1.1em;font-size:.95em}
.split li{margin-bottom:.35em}

/* FAQ: always open, answers are visible text */
.faq h3{margin-top:28px}
.faq p{margin-bottom:.75em}

/* CTA panel and author box */
.cta-panel{margin:3rem 0 1.5rem;padding:24px;border:1px solid var(--line);border-radius:18px;background:var(--panel)}
.cta-panel h2{margin-top:0!important;font-size:1.75rem!important}
.cta-panel p{color:var(--text-secondary)}
.cta-panel .small{margin:.75rem 0 0;font:400 .8125rem/1.5 var(--f-mono);letter-spacing:.04em;color:var(--text-secondary)}
.author-box{display:flex;gap:16px;align-items:flex-start;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--line);font-size:.95em;color:var(--text-secondary)}
.author-box p{margin:0 0 .5em}
.author-box .name{color:var(--text-primary);font-weight:500}

/* visual blocks: prose stays at the 32em measure; these may span the empty right column from 1280px (.bleed) */
@media (min-width:1280px){.page-body .bleed{margin-right:calc(-1 * clamp(0px, 100vw - 1060px, 340px))}}
.page-head{position:relative}
.page-head::before{content:"";position:absolute;z-index:-1;inset:-40px 0 auto -30%;height:340px;pointer-events:none;background:radial-gradient(50% 60% at 30% 40%,rgba(255,190,120,.10),transparent 70%)}

/* key numbers */
ul.stats{list-style:none;margin:1.5rem 0 2rem;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px}
.stats li{margin:0;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--panel);display:flex;flex-direction:column;gap:6px}
.stats .n{font:800 clamp(1.9rem,4.5vw,2.6rem)/1 var(--f-display);letter-spacing:.01em;color:var(--glow);font-variant-numeric:tabular-nums}
.stats .n small{font-size:.55em;letter-spacing:.02em}
.stats span{font-size:.9rem;line-height:1.35;color:var(--text-secondary)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,250px),1fr));gap:12px;margin:1.25rem 0 1.75rem}
.card{display:flex;flex-direction:column;gap:10px;padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}
.card h3{margin:0;font:500 1.125rem/1.3 var(--f-body)}
.card .top{display:flex;align-items:center;gap:10px}
.card .ico{flex:none;width:36px;height:36px;display:grid;place-items:center;border-radius:10px;background:var(--panel-2);color:var(--glow)}
.card .ico svg{width:20px;height:20px}
.card .price{font:800 1.6rem/1.05 var(--f-display);letter-spacing:.01em;color:var(--text-primary);font-variant-numeric:tabular-nums}
.card .price small{font:400 .8125rem/1.3 var(--f-mono);letter-spacing:.04em;color:var(--text-secondary)}
.card p,.card ul{margin:0;font-size:.95rem}
.card ul{padding-left:1.1em}
.card li{margin-bottom:.3em}
.card .more{margin-top:auto;font-size:.9rem}
.chip{display:inline-flex;align-items:center;gap:.35em;padding:2px 8px;border-radius:999px;border:1px solid var(--line-strong);font:400 .75rem/1.5 var(--f-mono);letter-spacing:.04em;color:var(--text-secondary);white-space:nowrap}
.chip.yes{border-color:rgba(255,217,168,.55);color:var(--glow)}
.chip.yes::before{content:"\2713"}
.chip.no::before{content:"\2715"}
/* .yes = has it, .no = does not have it (write the feature, not its negation), .con = a trade-off stated as a fact */
.chip.con{border-style:dashed}
.chip.con::before{content:"\2212"}

/* bar chart: label, bar, value; the numbers are text, the bar is decoration */
.bars{margin:1.25rem 0 1.75rem;padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}
.bars figcaption{margin:0 0 1rem;font-weight:500}
.bars figcaption span{display:block;font:400 .8125rem/1.4 var(--f-mono);letter-spacing:.04em;color:var(--text-secondary)}
.bars ol{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.bars li{margin:0;display:grid;grid-template-columns:minmax(0,11rem) minmax(0,1fr) auto;align-items:center;gap:12px;font-size:.92rem}
.bars .bar{height:12px;border-radius:6px;background:linear-gradient(90deg,rgba(255,217,168,.9),rgba(255,190,120,.55));width:calc(var(--v,0) * 100%);min-width:3px}
.bars .bar.muted{background:rgba(241,236,227,.28)}
.bars .v{font-family:var(--f-mono);font-size:.85rem;font-variant-numeric:tabular-nums;white-space:nowrap}
@media (max-width:520px){
  .bars li{grid-template-columns:minmax(0,1fr) auto;row-gap:4px}
  .bars .bar{grid-column:1 / -1;grid-row:2}
}

/* pull quote from a real, linked source */
.quote{margin:2rem 0;padding:4px 0 4px 20px;border-left:3px solid var(--glow)}
.quote blockquote{margin:0}
.quote blockquote p{margin:0;font:500 1.25rem/1.45 var(--f-body);color:var(--text-primary)}
.quote figcaption{margin-top:.6rem;font:400 .8125rem/1.5 var(--f-mono);letter-spacing:.04em;color:var(--text-secondary)}

/* timeline */
ol.timeline{list-style:none;margin:1.25rem 0 1.75rem;padding:0;counter-reset:step}
.timeline>li{position:relative;margin:0;padding:0 0 1.5rem 44px}
.timeline>li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;width:30px;height:30px;display:grid;place-items:center;border-radius:50%;border:1.5px solid var(--glow);font:500 .85rem/1 var(--f-mono);color:var(--glow);background:var(--canvas)}
.timeline>li::after{content:"";position:absolute;left:15px;top:34px;bottom:4px;width:1px;background:var(--line-strong)}
.timeline>li:last-child::after{display:none}
.timeline .when{display:block;font:400 .8125rem/1.4 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary)}
.timeline h3,.timeline h4{margin:.1rem 0 .35rem;font:500 1.0625rem/1.35 var(--f-body)}
.timeline p{margin:0}

/* the one-line verdict */
.note.key{border-color:rgba(255,217,168,.35);background:linear-gradient(180deg,rgba(255,217,168,.06),rgba(255,217,168,0)),var(--panel)}

/* back to contents */
.to-contents{position:fixed;right:16px;bottom:16px;z-index:40;min-height:44px;padding:0 14px;display:flex;align-items:center;border:1px solid var(--line-strong);border-radius:12px;background:var(--panel);font:400 .8125rem/1 var(--f-mono);letter-spacing:.06em;text-decoration:none;color:var(--text-primary);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s var(--ease-out),transform .25s var(--ease-out),visibility 0s .25s}
.to-contents.show{opacity:1;visibility:visible;transform:none;transition-delay:0s}

/* footer */
.site-footer{padding:40px var(--gut) 48px;border-top:1px solid var(--line);color:var(--text-secondary);font-size:.9rem}
.site-footer .wrap{max-width:1180px;margin:0 auto;display:flex;flex-wrap:wrap;justify-content:space-between;gap:1.5rem 2rem}
.site-footer ul{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;list-style:none;margin:0;padding:0}
.site-footer .brand{font-size:1.1rem;color:var(--text-primary);text-decoration:none}
.site-footer p{margin:0;flex-basis:100%}
.site-footer .foot-cols{flex-basis:100%;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1.5rem 2rem}
.site-footer .foot-cols ul{flex-direction:column;gap:.45rem}
.site-footer .foot-h{margin:0 0 .6rem;font:400 .75rem/1.3 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary)}
@media (max-width:600px){.site-footer ul a{display:inline-block;padding-block:10px}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
}
/* App screenshots: three phone screens in a row (case studies) */
.screens{margin:1.75rem 0}
.screens .shots{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:560px}
.screens img{width:100%;border-radius:18px;border:1px solid var(--line);background:var(--panel)}
.screens figcaption{margin-top:.75rem;font:400 .8125rem/1.4 var(--f-mono);letter-spacing:.04em;color:var(--text-secondary)}