/* ============================================================
   SuppCalculator — shared design system
   Type: Space Grotesk (display) · Inter (body) · Space Mono (data)
   Palette: cool light base, indigo→cyan accent, signal orange
   ============================================================ */

:root{
  --ink:#12161C;
  --bg:#E7EBF0;
  --surface:#FFFFFF;
  --surface-2:#F3F6FA;
  --line:#D3DAE3;
  --muted:#616B7A;
  --muted-2:#8A93A0;
  --fill-1:#1D4ED8;
  --fill-2:#0BC5E0;
  --signal:#F26419;
  --signal-ink:#12161C;
  --ok:#0E7C66;
  --radius:16px;
  --radius-sm:11px;
  --shadow:0 1px 2px rgba(18,22,28,.04), 0 12px 32px -12px rgba(18,22,28,.18);
  --shadow-sm:0 1px 2px rgba(18,22,28,.05), 0 6px 16px -10px rgba(18,22,28,.16);
  --maxw:1040px;
  --prose:720px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:"Inter",system-ui,-apple-system,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(120% 70% at 100% 0%, rgba(29,78,216,.05), transparent 60%),
    radial-gradient(90% 60% at 0% 100%, rgba(11,197,224,.06), transparent 55%),
    var(--bg);
  line-height:1.6;
  min-height:100vh;
  display:flex;flex-direction:column;
}
a{color:var(--fill-1)}
img{max-width:100%;display:block}

/* ---------- Layout ---------- */
.container{max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,4vw,32px);width:100%}
.section{padding:clamp(40px,7vw,72px) 0}
main{flex:1}

/* ---------- Header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(231,235,240,.82);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:18px;
  color:var(--ink);text-decoration:none;letter-spacing:-.01em;
}
.brand .mark{
  width:26px;height:26px;border-radius:7px;flex-shrink:0;
  background:linear-gradient(135deg,var(--fill-1),var(--fill-2));
  display:grid;place-items:center;color:#fff;font-size:14px;font-weight:700;
  font-family:"Space Mono",monospace;
}
.brand b{color:var(--fill-1);font-weight:700}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none}
.nav-links a{
  font-family:"Space Grotesk",sans-serif;font-weight:600;font-size:14.5px;
  color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:9px;
  transition:color .15s,background .15s;
}
.nav-links a:hover{color:var(--ink);background:var(--surface-2)}
.nav-links a[aria-current="page"]{color:var(--ink)}
@media (max-width:560px){
  .nav-links a{padding:8px 9px;font-size:13.5px}
  .brand span.full{display:none}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;cursor:pointer;text-decoration:none;
  font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:15px;
  border:none;border-radius:var(--radius-sm);padding:13px 20px;
  transition:transform .06s,box-shadow .15s,filter .15s,background .15s,color .15s;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:var(--signal);color:var(--signal-ink);
  box-shadow:0 6px 18px -6px rgba(242,100,25,.5);
}
.btn-primary:hover{filter:brightness(1.04);box-shadow:0 8px 22px -6px rgba(242,100,25,.58)}
.btn-primary .arw{transition:transform .15s}
.btn-primary:hover .arw{transform:translateX(3px)}
.btn-ink{background:var(--ink);color:#fff;box-shadow:var(--shadow-sm)}
.btn-ink:hover{filter:brightness(1.15)}
.btn-ghost{background:var(--surface);color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:#B9C3D1}
.btn:focus-visible{outline:2px solid var(--fill-1);outline-offset:2px}

/* ---------- Eyebrow / headings ---------- */
.eyebrow{
  font-family:"Space Mono",monospace;font-size:12px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--fill-1);font-weight:700;
  display:inline-flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--fill-1),var(--fill-2))}
h1,h2,h3,h4{font-family:"Space Grotesk",sans-serif;letter-spacing:-.02em;line-height:1.12;font-weight:700}
h1{font-size:clamp(28px,5.2vw,46px)}
h2{font-size:clamp(23px,3.6vw,32px);letter-spacing:-.015em}
h3{font-size:clamp(18px,2.4vw,21px)}

/* ---------- Hero ---------- */
.hero{padding:clamp(44px,8vw,90px) 0 clamp(30px,5vw,54px)}
.hero h1{max-width:16ch;margin-top:18px}
.hero .lede{color:var(--muted);font-size:clamp(16px,2.1vw,19px);margin-top:16px;max-width:56ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- Cards / hub ---------- */
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
@media (max-width:760px){.grid-2,.grid-3{grid-template-columns:1fr}}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(20px,3vw,26px);box-shadow:var(--shadow-sm);
  transition:transform .12s,box-shadow .15s,border-color .15s;
  display:flex;flex-direction:column;text-decoration:none;color:inherit;
}
a.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#C4CDDA}
.card .tag{
  font-family:"Space Mono",monospace;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  font-weight:700;color:var(--fill-1);
}
.card.soon{opacity:.66}
.card.soon .tag{color:var(--muted-2)}
.card h3{margin-top:12px}
.card p{color:var(--muted);font-size:14.5px;margin-top:8px;flex:1}
.card .go{
  margin-top:16px;font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:14.5px;
  color:var(--fill-1);display:inline-flex;align-items:center;gap:7px;
}
a.card:hover .go{gap:11px}

/* ---------- Prose (content + legal pages) ---------- */
.prose{max-width:var(--prose);margin:0 auto}
.prose > *{margin-top:0}
.prose h2{margin-top:44px;padding-top:4px}
.prose h3{margin-top:30px}
.prose p{margin-top:16px;color:#2A313B}
.prose ul,.prose ol{margin-top:16px;padding-left:22px;color:#2A313B}
.prose li{margin-top:8px}
.prose li::marker{color:var(--fill-1)}
.prose a{text-decoration:underline;text-underline-offset:2px}
.prose strong{color:var(--ink);font-weight:600}
.prose small{color:var(--muted)}
.lead{font-size:clamp(16px,2vw,18.5px);color:var(--muted) !important}

/* ---------- Breadcrumbs ---------- */
.crumbs{
  font-family:"Space Mono",monospace;font-size:12px;color:var(--muted-2);
  padding-top:clamp(20px,4vw,30px);display:flex;gap:8px;flex-wrap:wrap;align-items:center;
}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--fill-1)}
.crumbs span{color:var(--line)}

/* ---------- Callout / note ---------- */
.note{
  display:flex;gap:12px;font-size:14px;color:var(--muted);line-height:1.55;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px 18px;margin-top:20px;
}
.note .ntag{
  font-family:"Space Mono",monospace;font-weight:700;font-size:10.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--fill-1);flex-shrink:0;padding-top:2px;
}
.note.warn .ntag{color:var(--signal)}
.note b{color:var(--ink);font-weight:600}
.note a{color:var(--fill-1)}

/* ---------- FAQ ---------- */
.faq{margin-top:22px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  font-family:"Space Grotesk",sans-serif;font-weight:600;font-size:16.5px;color:var(--ink);
  padding:18px 40px 18px 0;cursor:pointer;list-style:none;position:relative;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:4px;top:16px;font-family:"Space Mono",monospace;
  font-size:20px;color:var(--fill-1);font-weight:700;transition:transform .2s;
}
.faq details[open] summary::after{content:"–"}
.faq .ans{padding:0 0 20px;color:#2A313B;font-size:15px}
.faq .ans p{margin-top:0}
.faq .ans p + p{margin-top:12px}

/* ---------- Data table ---------- */
.tbl{width:100%;border-collapse:collapse;margin-top:20px;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.tbl th,.tbl td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{font-family:"Space Grotesk",sans-serif;font-weight:600;background:var(--surface-2);font-size:13px}
.tbl td{color:#2A313B}
.tbl tr:last-child td{border-bottom:none}
.tbl .mono{font-family:"Space Mono",monospace;font-weight:700;color:var(--fill-1)}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:clamp(50px,8vw,90px);
  border-top:1px solid var(--line);
  background:var(--surface);
}
.footer-in{display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;padding:clamp(30px,5vw,48px) 0}
.footer-brand{max-width:280px}
.footer-brand p{color:var(--muted);font-size:13.5px;margin-top:10px}
.footer-cols{display:flex;gap:clamp(28px,6vw,64px);flex-wrap:wrap}
.footer-col h4{font-family:"Space Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2);font-weight:700}
.footer-col ul{list-style:none;margin-top:12px}
.footer-col li{margin-top:9px}
.footer-col a{color:var(--muted);text-decoration:none;font-size:14px}
.footer-col a:hover{color:var(--fill-1)}
.footer-legal{border-top:1px solid var(--line);padding:18px 0;font-size:12.5px;color:var(--muted-2);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}
.footer-legal .disc{max-width:70ch}

/* ---------- Utilities ---------- */
.tac{text-align:center}
.mt-0{margin-top:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto !important;transition:none !important}
}