/* AIToolPost — editorial "testing bench" system.
   Display: Zilla Slab (lab-report slab). Body: IBM Plex Sans. Data/labels: IBM Plex Mono.
   Palette: ink + paper, emerald (commerce/verdict), gold (tested seal). */

:root{
  --ink:#171b21; --ink-soft:#5b616b; --paper:#f7f6f1; --surface:#ffffff;
  --line:#e5e2d8; --line-strong:#d3cfc2;
  --emerald:#0b7a54; --emerald-deep:#06543a;
  --gold:#b9821a; --gold-tint:#f3e8c8;
  --shadow:0 1px 2px rgba(23,27,33,.04), 0 8px 24px -12px rgba(23,27,33,.12);
  --display:"Zilla Slab",Georgia,"Times New Roman",serif;
  --body:"IBM Plex Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --wrap:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--emerald-deep);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:2px}
:focus-visible{outline:2px solid var(--emerald);outline-offset:2px;border-radius:2px}
img{max-width:100%;height:auto}

/* ---------- header ---------- */
.site-head{border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0;z-index:20}
.site-head .bar{max-width:var(--wrap);margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.brand{font-family:var(--display);font-weight:700;font-size:1.3rem;letter-spacing:-.01em;color:var(--ink);display:flex;align-items:center;gap:9px}
.brand:hover{text-decoration:none}
.brand .dot{width:10px;height:10px;border-radius:50%;background:var(--emerald);box-shadow:0 0 0 3px var(--gold-tint)}
.site-head nav{display:flex;gap:20px;flex-wrap:wrap;font-family:var(--mono);font-size:.74rem;text-transform:uppercase;letter-spacing:.08em}
.site-head nav a{color:var(--ink-soft)}
.site-head nav a:hover{color:var(--emerald-deep)}

/* ---------- hero ---------- */
.hero{max-width:var(--wrap);margin:0 auto;padding:64px 24px 40px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.hero .eyebrow{font-family:var(--mono);font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--emerald-deep);margin:0 0 16px}
.hero h1{font-family:var(--display);font-weight:700;font-size:clamp(2.2rem,5vw,3.6rem);line-height:1.04;letter-spacing:-.02em;margin:0 0 18px;max-width:16ch}
.hero h1 em{font-style:normal;color:var(--emerald-deep);position:relative}
.hero p.lede{font-size:1.18rem;color:var(--ink-soft);max-width:52ch;margin:0}
.hero .stat{font-family:var(--mono);font-size:.8rem;color:var(--ink-soft);margin-top:22px;display:flex;gap:22px;flex-wrap:wrap}
.hero .stat b{color:var(--ink);font-weight:600}

/* signature: tested seal */
.seal{width:150px;height:150px;flex:none;transform:rotate(-7deg)}
@media(max-width:820px){.hero{grid-template-columns:1fr}.seal{width:112px;height:112px}}

/* ---------- section headings ---------- */
.strip{max-width:var(--wrap);margin:0 auto;padding:8px 24px 0}
.strip .kicker{font-family:var(--mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);
  border-top:2px solid var(--ink);padding-top:10px;display:flex;justify-content:space-between;align-items:baseline}

/* ---------- card grid ---------- */
.grid{max-width:var(--wrap);margin:0 auto;padding:22px 24px 56px;display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:22px}
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:4px;
  padding:22px;transition:border-color .16s ease,transform .16s ease,box-shadow .16s ease}
.card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow);text-decoration:none}
.card .tag{font-family:var(--mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.1em;color:var(--emerald-deep);margin-bottom:12px}
.card h3{font-family:var(--display);font-weight:600;font-size:1.28rem;line-height:1.18;margin:0 0 10px;color:var(--ink);letter-spacing:-.01em}
.card p{margin:0;color:var(--ink-soft);font-size:.96rem}
.card .read{margin-top:14px;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink)}

/* ---------- article ---------- */
.article{max-width:720px;margin:0 auto;padding:44px 24px 64px}
.crumbs{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:20px}
.crumbs a{color:var(--ink-soft)}
.article h1{font-family:var(--display);font-weight:700;font-size:clamp(2rem,4.4vw,2.9rem);line-height:1.08;letter-spacing:-.02em;margin:.1em 0 .35em}
.article .meta{font-family:var(--mono);font-size:.75rem;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-soft);
  border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:26px}
.article h2{font-family:var(--display);font-weight:600;font-size:1.55rem;letter-spacing:-.01em;margin:1.9em 0 .5em;padding-top:.6em}
.article h3{font-family:var(--display);font-weight:600;font-size:1.2rem;margin:1.5em 0 .4em}
.article p,.article li{color:#2b3038}
.article a{text-decoration:underline;text-underline-offset:2px;text-decoration-color:var(--line-strong)}
.article a:hover{text-decoration-color:var(--emerald)}
.article strong{font-weight:600;color:var(--ink)}

/* verdict/takeaways box — reads as a stamped lab result */
.takeaways{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--emerald);border-radius:4px;
  padding:6px 24px 18px;margin:1.8em 0;position:relative}
.takeaways h2{font-family:var(--mono);font-size:.8rem !important;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  color:var(--emerald-deep);padding:0;margin:18px 0 6px}
.takeaways ul{margin:.2em 0 .4em;padding-left:1.15em}
.takeaways li{margin:.35em 0}

/* comparison tables — data feel */
.article table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:.94rem;font-variant-numeric:tabular-nums}
.article th,.article td{border-bottom:1px solid var(--line);padding:11px 12px;text-align:left}
.article thead th{font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;
  color:var(--ink);border-bottom:2px solid var(--ink);background:transparent}
.article tbody tr:hover{background:#fcfbf7}

.disclosure{font-family:var(--mono);font-size:.78rem;line-height:1.5;color:var(--ink-soft);
  background:var(--gold-tint);border-radius:4px;padding:11px 15px;margin:0 0 8px}
.share{margin:2em 0 .5em;font-family:var(--mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em}

.faq{margin-top:2.4em}
.faq h2{font-family:var(--display)}
.faq details{border-top:1px solid var(--line);padding:14px 2px}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:600;font-size:1.02rem;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--emerald);font-family:var(--mono)}
.faq details[open] summary::after{content:"\2013"}
.faq p{color:var(--ink-soft);margin:.7em 0 .2em}

/* newsletter */
.newsletter{background:var(--ink);color:#fff;border-radius:6px;padding:26px 28px;margin:2.4em 0}
.newsletter h2{font-family:var(--display);font-weight:600;font-size:1.3rem;margin:0 0 14px;color:#fff;padding:0}
.newsletter form{display:flex;gap:10px;flex-wrap:wrap}
.newsletter input{flex:1;min-width:220px;padding:12px 14px;border-radius:4px;border:1px solid #333a44;background:#0f1319;color:#fff;font-family:var(--body)}
.newsletter button{padding:12px 22px;border-radius:4px;border:0;background:var(--emerald);color:#fff;font-weight:600;font-family:var(--mono);text-transform:uppercase;letter-spacing:.06em;font-size:.8rem;cursor:pointer}
.newsletter button:hover{background:var(--emerald-deep)}
.newsletter .fine{font-family:var(--mono);color:#8a919c;font-size:.72rem;margin:.7em 0 0}

/* ---------- static pages ---------- */
.page{max-width:720px;margin:0 auto;padding:44px 24px 64px}
.page h1{font-family:var(--display);font-weight:700;font-size:2.2rem;letter-spacing:-.02em}

/* ---------- footer ---------- */
.site-foot{border-top:2px solid var(--ink);margin-top:20px;background:var(--paper)}
.site-foot .inner{max-width:var(--wrap);margin:0 auto;padding:34px 24px;color:var(--ink-soft);font-size:.86rem;display:flex;flex-direction:column;gap:10px}
.site-foot .row{display:flex;gap:18px;flex-wrap:wrap;font-family:var(--mono);font-size:.74rem;text-transform:uppercase;letter-spacing:.06em}
.site-foot a{color:var(--ink-soft)}
.site-foot .discl{max-width:70ch}

@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media(max-width:560px){body{font-size:16px}.hero{padding-top:44px}.article{padding-top:32px}}