/* Shared styles for Founding Ten case-study pages. Matches the homepage design system. */
:root{
  --bg:#070708;--surface:#0e0e11;--line:rgba(255,255,255,.08);--line2:rgba(255,255,255,.14);
  --fg:#f4f4f6;--muted:#83838d;--faint:#54545d;--accent:#7d93ff;
  --display:"Clash Display",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --text:"Inter Variable","Inter","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --maxw:1080px;--pad:clamp(22px,5vw,48px);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--fg);font-family:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased;font-feature-settings:"cv01","ss03";font-optical-sizing:auto;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}

/* nav */
header{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(7,7,8,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.16) 50%,transparent);pointer-events:none}
.bar{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:7px;font-family:var(--display);font-weight:600;font-size:18px}
.brand .wm{letter-spacing:-.01em}
.brand .f{color:#c7ccd6;letter-spacing:.03em}
.nav-links{display:flex;align-items:center;gap:26px;font-size:14px;color:var(--muted)}
.nav-links a{transition:color .2s}.nav-links a:not(.pill):hover,.nav-links a.cur:not(.pill){color:var(--fg)}
.pill{display:inline-flex;align-items:center;gap:8px;font-family:var(--text);font-weight:500;font-size:14px;border-radius:999px;padding:10px 18px;cursor:pointer;border:1px solid transparent;background:var(--fg);color:#08080a;transition:transform .15s,background .2s}
.pill:hover{transform:translateY(-2px) scale(1.04);background:#fff;box-shadow:0 8px 22px -4px rgba(255,255,255,.3)}
.pill.ghost{background:transparent;color:var(--fg);border-color:var(--line2)}
.pill.ghost:hover{background:rgba(255,255,255,.06)}

/* border-magic CTA */
.btn-magic{position:relative;display:inline-flex;border:none;border-radius:999px;padding:1px;overflow:hidden;isolation:isolate;cursor:pointer;background:rgba(255,255,255,.1);font-family:var(--text);box-shadow:0 4px 14px -6px rgba(0,0,0,.7)}
.btn-magic::before{content:"";position:absolute;inset:-60%;z-index:0;background:conic-gradient(from 0deg,transparent 0 55%,rgba(255,255,255,.75) 80%,#fff 95%,transparent 100%);animation:spin 4s linear infinite;opacity:0;transition:opacity .35s}
.btn-magic:hover::before{opacity:1}
.btn-magic:hover{box-shadow:0 6px 20px -6px rgba(0,0,0,.75),0 0 16px -3px rgba(255,255,255,.18)}
.btn-magic .lbl{position:relative;z-index:1;display:inline-flex;align-items:center;gap:8px;background:linear-gradient(180deg,#17171c,#0e0e11);box-shadow:inset 0 1px 0 rgba(255,255,255,.15),inset 0 -1px 0 rgba(0,0,0,.45);color:#f4f4f6;border-radius:999px;padding:13px 26px;font-weight:500;font-size:15px;transition:background .25s,box-shadow .25s}
.btn-magic:hover .lbl{background:linear-gradient(180deg,#1f1f26,#121215)}
@keyframes spin{to{transform:rotate(360deg)}}

main{padding-top:68px}

/* index hero */
.idx-hero{padding:clamp(54px,10vh,110px) 0 clamp(18px,4vw,38px)}
.eyebrow-m{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.idx-hero h1{font-family:var(--display);font-weight:600;font-size:clamp(40px,7vw,72px);letter-spacing:-.038em;line-height:1;margin-top:18px}
.idx-hero .lead{color:var(--muted);font-size:clamp(17px,2vw,21px);line-height:1.5;margin-top:22px;max-width:42ch}

/* index list of companies */
.cs-index{padding:clamp(20px,4vw,40px) 0 0}
.cs-row{display:block;padding:clamp(30px,4.5vw,48px) 0;position:relative;transition:opacity .3s ease,filter .3s ease}
.cs-row::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.14) 50%,transparent)}
.cs-row .rh{display:flex;align-items:baseline;justify-content:space-between;gap:18px;flex-wrap:wrap}
.cs-row h3{font-family:var(--display);font-weight:600;font-size:clamp(27px,4.2vw,44px);letter-spacing:-.028em;line-height:1}
.cs-row .go{font-size:14px;color:var(--accent);opacity:.55;transform:translateX(-4px);transition:opacity .25s,transform .25s;white-space:nowrap}
.cs-row:hover .go{opacity:1;transform:none}
.cs-row .sub{color:var(--muted);font-size:clamp(15px,1.7vw,18px);line-height:1.55;margin-top:13px;max-width:62ch}
.cs-row .tag{display:block;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:11.5px;letter-spacing:.03em;color:var(--faint);margin-top:15px}

/* monochrome company logos beside the name */
.cs-row .rh{align-items:center}
.cs-row .nm{display:inline-flex;align-items:center;gap:14px;min-width:0}
.cs-logo{height:27px;width:auto;max-width:116px;object-fit:contain;object-position:left center;filter:grayscale(1);opacity:.9;flex:0 0 auto;border-radius:24%}
.cs-titlerow{display:flex;align-items:center;gap:clamp(13px,2.4vw,22px);margin-top:18px;flex-wrap:wrap}
.cs-titlerow .cs-title{margin-top:0}
.cs-logo-lg{height:clamp(38px,6.2vw,60px);width:auto;max-width:44vw;object-fit:contain;object-position:left center;filter:grayscale(1);opacity:.95;flex:0 0 auto;border-radius:22%}
.cs-logo.inv,.cs-logo-lg.inv{filter:brightness(0) invert(1)}

/* case-study page hero */
.cs-hero{padding:clamp(44px,8vh,86px) 0 clamp(30px,5vw,50px)}
.back{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:clamp(32px,6vw,52px);transition:color .2s}
.back:hover{color:var(--fg)}
.cs-cat{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.cs-title{font-family:var(--display);font-weight:600;font-size:clamp(46px,8.5vw,86px);letter-spacing:-.04em;line-height:.97;margin-top:18px}
.cs-lead{font-family:var(--display);font-weight:500;color:var(--fg);opacity:.92;font-size:clamp(18px,2.5vw,26px);line-height:1.32;letter-spacing:-.012em;margin-top:20px;max-width:30ch}
.cs-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:clamp(26px,4vw,34px)}

/* case-study body sections */
.cs-section{padding:clamp(30px,4.5vw,46px) 0;position:relative;display:grid;grid-template-columns:clamp(110px,16vw,190px) 1fr;gap:clamp(18px,4vw,46px)}
.cs-section::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.13) 50%,transparent)}
.cs-section h2{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);font-weight:500;padding-top:6px}
.cs-section p{color:var(--fg);opacity:.92;font-size:clamp(16px,1.9vw,19px);line-height:1.62;max-width:56ch}
.cs-section p+p{margin-top:15px}
.cs-section b{font-weight:600}

.cs-callout{margin-top:clamp(30px,5vw,46px);padding:24px 26px;border-radius:16px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(125,147,255,.08),rgba(125,147,255,.02));font-family:var(--display);font-weight:500;font-size:clamp(16px,2vw,20px);letter-spacing:-.01em;line-height:1.4}
.cs-callout span{color:var(--accent)}

/* final CTA */
.final{text-align:center;padding:clamp(70px,11vh,120px) 0}
.final h2{font-family:var(--display);font-weight:600;font-size:clamp(30px,5.5vw,58px);letter-spacing:-.035em;line-height:1.02;max-width:18ch;margin:0 auto}
.final .acts{margin-top:30px;display:flex;justify-content:center}

/* footer */
footer{position:relative;padding:30px 0;margin-top:14px}
footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.16) 50%,transparent)}
.foot{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;color:var(--faint);font-size:12.5px;font-family:ui-monospace,SFMono-Regular,Menlo,"Liberation Mono",monospace;letter-spacing:.01em}
.foot .brand{font-size:16px}
.foot .links{display:flex;gap:20px}.foot a:hover{color:var(--fg)}

/* contact form */
.cform{display:grid;gap:26px;max-width:580px}
.cform .row2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cform label{display:block;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--faint);margin-bottom:9px}
.cform label .opt{text-transform:none;letter-spacing:.01em;opacity:.85}
.cform input,.cform textarea{width:100%;background:transparent;border:none;border-bottom:1px solid var(--line2);border-radius:0;padding:11px 2px;color:var(--fg);font-family:var(--text);font-size:16px;transition:border-color .2s}
.cform input::placeholder,.cform textarea::placeholder{color:var(--faint)}
.cform input:focus,.cform textarea:focus{outline:none;border-bottom-color:var(--accent)}
.cform textarea{min-height:130px;resize:vertical;line-height:1.55}
.cform .submit{margin-top:4px}
.cform-note{color:var(--faint);font-size:12.5px;margin-top:4px}
.cform-note a{color:var(--muted)}.cform-note a:hover{color:var(--fg)}
.cform-success{display:none;max-width:560px}
.cform-success .ok{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:50%;background:rgba(125,147,255,.14);color:var(--accent);font-size:22px;margin-bottom:22px}
.cform-success h2{font-family:var(--display);font-weight:600;font-size:clamp(26px,4vw,38px);letter-spacing:-.025em}
.cform-success p{color:var(--muted);font-size:clamp(15px,1.8vw,18px);line-height:1.55;margin-top:14px;max-width:42ch}
.cform-success .back{margin-top:26px}
@media(max-width:560px){.cform .row2{grid-template-columns:1fr}}

@media(max-width:640px){
  .cs-section{grid-template-columns:1fr;gap:9px}
  /* compact single-line navbar: nothing wraps */
  .bar{gap:10px}
  .brand{font-size:16px;gap:6px;flex-shrink:0}
  .brand svg{width:20px;height:17px}
  .nav-links{gap:13px;font-size:13px}
  .nav-links a{white-space:nowrap}
  .nav-links .hide-sm{display:none}
  .nav-links .btn-magic .lbl{padding:8px 14px;font-size:13px}
}

/* contact split + booking */
.contact-split{display:grid;grid-template-columns:.82fr 1.18fr;gap:clamp(28px,5vw,60px);align-items:start;padding:clamp(40px,7vh,82px) 0 clamp(50px,8vw,92px)}
.contact-h1{margin-top:14px}
.cs-title.contact-h1{font-size:clamp(32px,4.4vw,52px)}
.contact-left .cs-lead{max-width:34ch}
.bk-tabs{display:inline-flex;gap:4px;padding:4px;border:1px solid var(--line2);border-radius:12px;margin-top:30px}
.bk-tab{font-family:var(--text);font-size:14px;font-weight:500;color:var(--muted);background:transparent;border:none;border-radius:9px;padding:9px 16px;cursor:pointer;transition:background .2s,color .2s}
.bk-tab:hover{color:var(--fg)}
.bk-tab.active{background:rgba(255,255,255,.08);color:var(--fg)}
.bk-panel[hidden]{display:none}
.bk-frame{position:relative;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface);transition:box-shadow .35s}
.bk-frame::after{content:"";position:absolute;inset:0;border-radius:16px;padding:1px;pointer-events:none;opacity:0;transition:opacity .35s;z-index:30;background:radial-gradient(240px 240px at var(--mx,50%) var(--my,50%),rgba(255,255,255,.72),rgba(125,147,255,.42) 36%,transparent 68%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;-webkit-mask-composite:xor;mask-composite:exclude}
.bk-frame:hover{box-shadow:0 0 34px -12px rgba(125,147,255,.35)}
.bk-frame:hover::after{opacity:1}
.bk-frame iframe{display:block;width:100%;border:0}
.contact-right .cform{max-width:none}
@media(max-width:820px){.contact-split{grid-template-columns:1fr;gap:26px}}

/* ===== content guide / article pages ===== */
.guide{max-width:768px;margin:0 auto}
.guide .answer{font-size:clamp(18px,2.2vw,22px);line-height:1.55;color:var(--fg);opacity:.96}
.guide h2{font-family:var(--display);font-weight:600;font-size:clamp(24px,3.6vw,34px);letter-spacing:-.028em;line-height:1.08;margin:clamp(42px,6vw,64px) 0 14px}
.guide h3{font-family:var(--display);font-weight:600;font-size:clamp(18px,2.3vw,22px);letter-spacing:-.015em;margin:24px 0 6px}
.guide p{color:var(--fg);opacity:.9;font-size:clamp(15.5px,1.85vw,18px);line-height:1.66}
.guide p+p,.guide h3+p{margin-top:12px}
.guide ul{margin:12px 0 0;padding-left:0;list-style:none}
.guide ul li{position:relative;padding-left:26px;color:var(--fg);opacity:.9;font-size:clamp(15.5px,1.85vw,18px);line-height:1.6;margin-top:11px}
.guide ul li::before{content:"";position:absolute;left:6px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.7}
.guide strong{font-weight:600;opacity:1}
.ilink{color:var(--accent);border-bottom:1px solid rgba(125,147,255,.32);transition:border-color .2s}
.ilink:hover{border-color:var(--accent)}
.cmp-wrap{overflow-x:auto;margin:26px 0 4px;border:1px solid var(--line);border-radius:14px;-webkit-overflow-scrolling:touch}
.cmp{width:100%;border-collapse:collapse;min-width:720px;font-size:13.5px}
.cmp th,.cmp td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.45}
.cmp thead th{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--faint);font-weight:500;background:rgba(255,255,255,.02)}
.cmp tbody th{font-family:var(--display);font-weight:600;font-size:14.5px;color:var(--fg);white-space:nowrap}
.cmp tbody tr:last-child td,.cmp tbody tr:last-child th{border-bottom:none}
.cmp .pos{color:var(--accent)}
.cmp tr.f10 td,.cmp tr.f10 th{background:linear-gradient(180deg,rgba(125,147,255,.10),rgba(125,147,255,.03))}
.tnote{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:11px;color:var(--faint);margin-top:10px;letter-spacing:.02em}
.callout{margin:26px 0 6px;padding:22px 24px;border-radius:14px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(125,147,255,.08),rgba(125,147,255,.02))}
.callout p{margin:0;font-family:var(--display);font-weight:500;font-size:clamp(16px,2vw,20px);letter-spacing:-.01em;line-height:1.42;opacity:1}
.callout .pos{color:var(--accent)}
.faq{margin-top:8px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:18px 0;font-family:var(--display);font-weight:600;font-size:clamp(16px,2vw,19px);letter-spacing:-.012em;display:flex;justify-content:space-between;gap:18px;color:var(--fg)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--muted);font-weight:400;font-size:20px;line-height:1}
.faq details[open] summary::after{content:"\2013"}
.faq details>p{color:var(--muted);font-size:clamp(15px,1.8vw,17px);line-height:1.62;padding:0 0 18px;margin:0;max-width:66ch}
.related{max-width:768px;margin:clamp(40px,6vw,60px) auto 0;padding-top:22px;border-top:1px solid var(--line)}
.related .rk{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);margin-bottom:10px}
.related a{display:block;padding:13px 0;color:var(--fg);font-family:var(--display);font-weight:500;font-size:clamp(16px,2vw,19px);letter-spacing:-.012em;border-bottom:1px solid var(--line);transition:color .2s}
.related a:last-child{border-bottom:none}
.related a:hover{color:var(--accent)}
.related a::after{content:" \2192";color:var(--accent);opacity:.55}

/* ===== mobile (max-width 640px): center heroes / headings / leads / CTAs; long body copy, lists, and tables stay left ===== */
@media(max-width:640px){
  .cs-hero,.idx-hero,.contact-left{text-align:center}
  .cs-links{justify-content:center}
  .idx-hero .lead,.cs-lead,.contact-left .cs-lead{margin-left:auto;margin-right:auto}
  .guide .answer,.guide h2,.guide h3,.callout,.tnote,.related{text-align:center}
}

/* mobile: comparison tables become stacked cards (no horizontal scroll) */
@media(max-width:640px){
  .cmp-wrap{overflow:visible;border:0;border-radius:0;margin:18px 0 2px}
  .cmp,.cmp tbody{display:block;width:100%;min-width:0}
  .cmp thead{display:none}
  .cmp tr{display:block;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;padding:6px 2px 10px;background:rgba(255,255,255,.02);text-align:left}
  .cmp tr.f10{background:linear-gradient(180deg,rgba(125,147,255,.10),rgba(125,147,255,.03));border-color:rgba(125,147,255,.24)}
  .cmp tbody th{display:block;border:0;font-family:var(--display);font-weight:600;font-size:18px;letter-spacing:-.01em;color:var(--fg);padding:8px 16px 4px;white-space:normal}
  .cmp td{display:block;border:0;padding:6px 16px 0;font-size:15px;line-height:1.5}
  .cmp td::before{content:attr(data-label);display:block;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-bottom:1px}
}