/* Calamo – editorial direction: paper, ink, one deep green accent */
@font-face{font-family:"Newsreader";src:url(/assets/fonts/newsreader-latin-opsz-normal.woff2) format("woff2");font-weight:200 800;font-style:normal;font-display:swap}
@font-face{font-family:"Newsreader";src:url(/assets/fonts/newsreader-latin-opsz-italic.woff2) format("woff2");font-weight:200 800;font-style:italic;font-display:swap}
@font-face{font-family:"Instrument Sans";src:url(/assets/fonts/instrument-sans-latin-wght-normal.woff2) format("woff2");font-weight:400 700;font-style:normal;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url(/assets/fonts/jetbrains-mono-latin-wght-normal.woff2) format("woff2");font-weight:100 800;font-style:normal;font-display:swap}

:root{
  --bg:#f7f4ee; --paper:#fbf9f5; --surface:#ffffff; --ink:#1c1b19; --ink-2:#3a3833; --muted:#67625a; --line:#e2ddd2; --line-2:#cfc8ba;
  --accent:#1f5f4a; --accent-deep:#173f33; --accent-ink:#ffffff; --accent-soft:#e6efe9;
  --add:#1f7a4d; --add-bg:#e8f3ec; --del:#a63a2b; --del-bg:#f8e9e5; --chg:#8a5a00; --chg-bg:#fbf1d9;
  --radius:10px;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;
  --sans:"Instrument Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --measure:41rem;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 var(--sans);font-feature-settings:"ss01"}
a{color:var(--accent);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{color:var(--accent-deep)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3{font-weight:400;color:var(--ink)}
h1,h2{font-family:var(--serif);font-weight:500;letter-spacing:-.015em}
.logo,.price,.stat b,.preview-head b,.ledger th,.post-card h3,.post-card .ph,.signup h3{font-weight:500!important}
h3{font-family:var(--sans);font-weight:600;letter-spacing:-.005em}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* header */
header.top{border-bottom:1px solid var(--line);background:var(--bg)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-family:var(--serif);font-size:28px;line-height:1;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.logo span{color:var(--accent)}
header.top nav{display:flex;align-items:center;gap:28px}
header.top nav a{color:var(--ink-2);text-decoration:none;font-size:15px}
header.top nav a:hover,header.top nav a[aria-current]{color:var(--ink);text-decoration:underline}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:6px;padding:14px 22px;min-height:46px;font-family:inherit;font-weight:600;font-size:16px;line-height:1;cursor:pointer;text-decoration:none;transition:background-color .15s,border-color .15s}
.btn-primary{background:var(--accent-deep);color:var(--accent-ink)}
.btn-primary:hover{background:var(--accent);color:var(--accent-ink)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{background:var(--paper);border-color:var(--ink-2);color:var(--ink)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}

/* hero */
.hero{padding:72px 0 64px;border-bottom:1px solid var(--line)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px;align-items:center}
.hero h1{font-size:clamp(40px,4.6vw,64px);line-height:1.06;margin:0 0 22px}
.hero h1 em{font-style:italic;color:var(--accent)}
.hero p.lead{font-size:19px;color:var(--muted);max-width:34rem;margin:0 0 30px}
.facts{display:flex;flex-wrap:wrap;gap:6px 18px;margin:24px 0 0;padding:0;list-style:none;font-size:14px;color:var(--muted)}
.facts li{display:flex;align-items:center;gap:8px}
.facts li:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* hero preview: a real result of the sample files */
.preview{max-width:100%;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:0 1px 0 rgba(28,27,25,.03),0 18px 40px -24px rgba(28,27,25,.25);overflow:hidden}
.preview-head{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line)}
.preview-head div{padding:16px 20px;font-size:15px;color:var(--ink-2)}
.preview-head div+div{border-left:1px solid var(--line)}
.preview-head b{font-family:var(--serif);font-weight:400;font-size:34px;line-height:1;margin-right:8px;font-variant-numeric:tabular-nums}
.preview-head .a b{color:var(--add)} .preview-head .r b{color:var(--del)} .preview-head .c b{color:var(--chg)}
.preview table{width:100%;border-collapse:collapse;font:14px/1.4 var(--mono)}
.preview th{font:600 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);text-align:left;padding:12px 14px;background:var(--paper);border-bottom:1px solid var(--line)}
.preview td{padding:11px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.preview tr:last-child td{border-bottom:0}
.preview td.m{width:28px;padding-right:0;font-weight:700}
.preview tr.add td.m{color:var(--add)} .preview tr.del td.m{color:var(--del)} .preview tr.chg td.m{color:var(--chg)}
.preview tr.del td:not(.m){color:var(--del)}
.preview tr.add td:not(.m){color:var(--add)}
.preview s{color:var(--muted);text-decoration-color:var(--del)}
.preview .to{color:var(--muted);margin:0 6px}
.preview ins{text-decoration:none;color:var(--add);font-weight:600}
.preview-cap{font-size:13px;color:var(--muted);margin:12px 2px 0}

/* sections */
section{padding:88px 0}
section+section{border-top:1px solid var(--line)}
section h2{font-size:clamp(30px,3vw,42px);line-height:1.1;margin:0 0 12px}
section p.sub{color:var(--muted);margin:0 0 40px;max-width:40rem;font-size:18px}
.eyebrow-num{font:500 13px/1 var(--mono);color:var(--accent);letter-spacing:.06em}

/* numbered editorial list instead of identical cards */
.points{display:grid;grid-template-columns:repeat(2,1fr);gap:0 56px;margin:0;padding:0;list-style:none;counter-reset:pt}
.points li{counter-increment:pt;padding:26px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:44px 1fr;gap:4px 12px}
.points li:before{content:counter(pt,decimal-leading-zero);font:500 13px/1.9 var(--mono);color:var(--accent)}
.points h3{margin:0;font-size:19px}
.points p{grid-column:2;margin:0;color:var(--muted);font-size:16px}

/* use cases as a ledger */
.ledger{width:100%;border-collapse:collapse}
.ledger th,.ledger td{text-align:left;vertical-align:top;padding:20px 0;border-top:1px solid var(--line)}
.ledger th{width:34%;font-family:var(--serif);font-weight:400;font-size:23px;line-height:1.15;padding-right:32px}
.ledger td{color:var(--muted)}
.ledger tr:last-child th,.ledger tr:last-child td{border-bottom:1px solid var(--line)}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:40px}

/* tool */
#tool{background:var(--paper)}
#tool .card{padding:32px;border-radius:12px}
.tool-head{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap;margin-bottom:28px}
.tool-head p.sub{margin:0}
.drops{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:22px}
.drop{position:relative;border:1.5px dashed var(--line-2);border-radius:var(--radius);padding:26px 22px;text-align:center;cursor:pointer;background:var(--bg);transition:border-color .15s,background-color .15s}
.drop:hover,.drop.over{border-color:var(--accent);background:var(--paper)}
.drop:focus-within{outline:2px solid var(--accent);outline-offset:2px}
.drop strong{display:block;font-size:17px;font-weight:600}
.drop small{color:var(--muted);font-size:14px}
.drop.has{border-style:solid;border-color:var(--accent);background:var(--accent-soft)}
.drop input{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden}
.opts{display:none;margin-bottom:22px}
.opts.show{display:block}
.opts label.lbl{display:block;font-weight:600;font-size:14px;margin:16px 0 8px}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{border:1px solid var(--line-2);background:var(--surface);color:var(--ink);border-radius:999px;padding:4px 13px;font-family:var(--mono);font-size:13px;line-height:1.7;cursor:pointer;user-select:none}
.chip:hover{border-color:var(--ink-2)}
.chip.on{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff}
.chip.off{text-decoration:line-through;color:var(--muted)}
.checks{display:flex;gap:22px;flex-wrap:wrap;font-size:15px}
.checks input{accent-color:var(--accent)}
.note{font-size:14px;color:var(--muted)}
.progress{height:4px;background:var(--line);border-radius:2px;overflow:hidden;margin:16px 0;display:none}
.progress.show{display:block}
.progress div{height:100%;width:0;background:var(--accent);transition:width .1s}
#status{font-size:14px;color:var(--muted);min-height:22px}
.summary{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);margin:22px 0;overflow:hidden;background:var(--surface)}
.stat{padding:16px 18px}
.stat+.stat{border-left:1px solid var(--line)}
.stat b{display:block;font-family:var(--serif);font-weight:400;font-size:38px;line-height:1.1;font-variant-numeric:tabular-nums}
.stat span{font-size:14px;color:var(--muted)}
.stat.add b{color:var(--add)} .stat.del b{color:var(--del)} .stat.chg b{color:var(--chg)}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-top:8px}
.tab{padding:10px 14px;border:0;background:none;font-family:inherit;font-weight:600;font-size:15px;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent}
.tab.on{color:var(--ink);border-bottom-color:var(--accent)}
.tablewrap{overflow:auto;max-height:440px;border:1px solid var(--line);border-top:0;border-radius:0 0 8px 8px;background:var(--surface)}
table.res{border-collapse:collapse;width:100%;font:13px/1.45 var(--mono)}
table.res th,table.res td{padding:7px 12px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;max-width:320px;overflow:hidden;text-overflow:ellipsis}
table.res th{position:sticky;top:0;background:var(--paper);font:600 11px/1.4 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
td.old{background:var(--del-bg);color:var(--del)}
td.new{background:var(--add-bg);color:var(--add)}
.downloads{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.warn{background:var(--chg-bg);color:var(--chg);border-radius:8px;padding:10px 14px;font-size:14px;margin-top:12px;display:none}
.warn.show{display:block}

/* pricing */
.pro{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:56px;align-items:start}
.status-badge{display:inline-block;margin:0 0 16px;background:var(--chg-bg);color:var(--chg);border-radius:999px;padding:3px 12px;font-size:14px;font-weight:600}
.price{font-family:var(--serif);font-size:64px;line-height:1;letter-spacing:-.01em}
.price s{font-size:28px;color:var(--muted);margin-left:10px}
ul.ticks{list-style:none;padding:0;margin:22px 0 28px}
ul.ticks li{padding:10px 0 10px 28px;position:relative;border-top:1px solid var(--line)}
ul.ticks li:before{content:"";position:absolute;left:2px;top:19px;width:10px;height:6px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.signup{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:28px}
.signup h3{margin:0 0 6px;font-family:var(--serif);font-weight:400;font-size:28px}
form.wl{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
form.wl input[type=email]{flex:1;min-width:220px;height:46px;padding:0 14px;border:1px solid var(--line-2);border-radius:6px;font:inherit;background:var(--bg)}
#wlMsg{font-size:14px;margin-top:8px}

/* faq */
.faq{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.6fr);gap:56px}
details{border-top:1px solid var(--line);padding:18px 0}
details:last-child{border-bottom:1px solid var(--line)}
details summary{cursor:pointer;font-weight:600;font-size:18px;list-style:none;display:flex;justify-content:space-between;gap:16px}
details summary::-webkit-details-marker{display:none}
details summary:after{content:"+";font:400 22px/1 var(--mono);color:var(--accent)}
details[open] summary:after{content:"–"}
details p{color:var(--muted);margin:10px 0 0;max-width:var(--measure)}

/* footer */
footer{border-top:1px solid var(--line);padding:56px 0 40px;color:var(--muted);font-size:15px;background:var(--bg)}
.foot{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px}
.foot .logo{font-size:28px}
.foot p{margin:10px 0 0;max-width:22rem}
.foot h4{margin:4px 0 12px;font:600 12px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{margin:0 0 8px}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{color:var(--ink);text-decoration:underline}
.foot-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:14px}

/* ---------- guides (articles) ---------- */
.crumbs{font-size:14px;color:var(--muted);margin:0 0 22px}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--ink);text-decoration:underline}
.crumbs span[aria-hidden]{margin:0 8px;color:var(--line-2)}
.post-head{padding-top:64px;padding-bottom:36px}
.post-head h1{font-size:clamp(36px,4.2vw,54px);line-height:1.08;margin:0 0 20px;max-width:15em}
.post-head .dek{font-size:20px;color:var(--muted);max-width:var(--measure);margin:0 0 22px}
.byline{font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:4px 10px}
.byline span[aria-hidden]{color:var(--line-2)}
.post-hero{margin-top:0;margin-bottom:8px}
.post-hero img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:12px;border:1px solid var(--line);background:var(--paper)}
.post-hero figcaption,.figure figcaption{font-size:13px;color:var(--muted);margin-top:10px}
.post-body{display:grid;grid-template-columns:220px minmax(0,var(--measure));gap:64px;padding-top:40px;padding-bottom:88px;justify-content:start}
.toc{position:sticky;top:24px;align-self:start;font-size:14px}
.toc h2{font:600 12px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:6px 0 14px}
.toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.toc a{display:block;padding:6px 0 6px 14px;margin-left:-1px;border-left:2px solid transparent;color:var(--muted);text-decoration:none;line-height:1.35}
.toc a:hover{color:var(--ink)}
.toc a.on{color:var(--ink);border-left-color:var(--accent)}
.prose{font-size:18px;line-height:1.7;color:var(--ink-2)}
.prose>*:first-child{margin-top:0}
.prose h2{font-size:30px;line-height:1.15;margin:56px 0 14px;color:var(--ink);scroll-margin-top:20px}
.prose h3{font-size:19px;margin:30px 0 8px;color:var(--ink)}
.prose p,.prose ul,.prose ol{margin:0 0 18px}
.prose li{margin:0 0 8px}
.prose strong{color:var(--ink)}
.prose code{font-family:var(--mono);font-size:.84em;background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:1px 5px}
.prose pre{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:16px 18px;overflow:auto;font:14px/1.6 var(--mono);color:var(--ink);margin:0 0 20px}
.prose pre code{background:none;border:0;padding:0;font-size:inherit}
.takeaways{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:22px 26px;margin:0 0 36px}
.takeaways h2{font:600 12px/1 var(--mono)!important;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)!important;margin:0 0 12px!important}
.takeaways ul{margin:0;padding-left:20px}
.takeaways li{margin:0 0 6px}
.callout{background:var(--accent-soft);border-radius:var(--radius);padding:20px 22px;margin:28px 0}
.callout.warn-box{background:var(--chg-bg)}
.figure{margin:32px 0}
.figure .frame{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:20px}
.figure svg{display:block;width:100%;height:auto}
table.mini{border-collapse:collapse;width:100%;margin:16px 0 22px;font-size:15px;display:block;overflow-x:auto}
table.mini th,table.mini td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.mini th{background:var(--paper);font-weight:600;color:var(--ink)}
table.mini td.bad{color:var(--del);background:var(--del-bg)}
.sources ol{font-size:15px;color:var(--muted);padding-left:20px}
.sources a{word-break:break-word}
.author{display:flex;gap:16px;align-items:flex-start;border-top:1px solid var(--line);margin-top:48px;padding-top:24px;font-size:15px;color:var(--muted)}
.author b{color:var(--ink);display:block}
.keep{border-top:1px solid var(--line);padding:64px 0 88px}
.keep h2{font-size:32px;margin:0 0 24px}
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{display:block;text-decoration:none;color:inherit}
.post-card img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:10px;border:1px solid var(--line);background:var(--paper);margin-bottom:14px}
.post-card .meta{font:500 12px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.post-card h3{font-family:var(--serif);font-weight:400;font-size:23px;line-height:1.12;margin:8px 0 6px}
.post-card p{margin:0;color:var(--muted);font-size:15px}
.post-card:hover h3{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.15em}
/* reading progress, CSS only where supported */
.readbar{position:fixed;top:0;left:0;right:0;height:3px;background:var(--accent);transform-origin:0 50%;transform:scaleX(0);z-index:10}
@supports (animation-timeline:scroll()){.readbar{animation:read linear both;animation-timeline:scroll(root)}@keyframes read{to{transform:scaleX(1)}}}
@supports not (animation-timeline:scroll()){.readbar{display:none}}
/* guides index */
.index-head{padding-top:64px;padding-bottom:24px}
.index-head h1{font-size:clamp(42px,5vw,68px);line-height:1.04;margin:0 0 18px}
.index-head p{font-size:20px;color:var(--muted);max-width:36rem;margin:0}
.featured{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;padding:24px 0 48px;border-bottom:1px solid var(--line);margin-bottom:48px}
.featured h3{font-size:clamp(30px,3vw,42px)}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero .wrap,.pro,.faq,.featured{grid-template-columns:minmax(0,1fr)}
  .hero .wrap{gap:40px}
  .post-body{grid-template-columns:minmax(0,1fr)}
  .toc{display:none}
  .foot{grid-template-columns:1fr 1fr}
  .cards3{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .wrap{padding-left:20px;padding-right:20px}
  .post-head,.index-head{padding-top:40px}
  section{padding:64px 0}
  .hero{padding:48px 0}
  .hero p.lead{font-size:18px}
  .points{grid-template-columns:1fr}
  .ledger th{display:block;width:auto;padding:20px 0 4px;font-size:21px}
  .ledger td{display:block;border-top:0;padding:0 0 20px}
  .grid2,.drops{grid-template-columns:1fr}
  .summary{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .preview-head b{font-size:24px;margin-right:5px}
  .preview-head div{padding:12px;font-size:13px}
  .preview td,.preview th{padding:9px 7px}
  .preview .hide-s{display:none}
  .preview table{font-size:12.5px;letter-spacing:-.01em}
  .preview th{letter-spacing:0;font-size:10px}
  .preview th:first-child,.preview td.m{width:20px;padding-right:0}
  header.top nav{gap:18px}
  header.top nav a.hide-m{display:none}
  .cards3{grid-template-columns:1fr}
  .prose{font-size:17px}
  .prose h2{font-size:26px}
  table.res.diff th,table.res.diff td{max-width:none;padding:6px 8px;white-space:normal}
  table.res.diff td{overflow-wrap:anywhere}
  #tool .card{padding:20px}
}
/* large monitors: scale the whole layout instead of leaving a narrow strip */
@media (min-width:1900px){html{zoom:1.12}}
@media (min-width:2400px){html{zoom:1.3}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.readbar{display:none}}
.post-card .ph{display:flex;flex-direction:column;justify-content:center;gap:4px;aspect-ratio:16/9;border-radius:10px;background:var(--accent-deep);color:#fff;padding:0 28px;margin-bottom:14px;font-family:var(--serif);font-size:30px;line-height:1.1}
.post-card .ph i{font-family:var(--sans);font-style:normal;font-size:15px;opacity:.75;margin-left:6px}
/* code must look exactly as typed: no programming ligatures (!= would render as ≠) */
pre,code,table.res,.preview,.preview *,.chip,.toc h2,.figure svg text{font-variant-ligatures:none!important;font-feature-settings:"calt" 0,"liga" 0!important}