/* ============================================================
   SWISS / VerusLink design system
   Single source of truth. Served at https://www.veruslink.au/assets/swiss.css
   Reference implementation: the homepage (index.html).

   Rules of the system:
   1. White paper, ink text, one accent (#2D9CDB), tint (#F0F7FC) for hover fills.
   2. Hairline 1px borders instead of shadows. No border-radius. No gradients.
      No shadows.
   3. Headlines bold and tight. Body 15-17px.
   4. Micro-labels 11px uppercase, wide tracking. Section index numbers in accent.
   5. Buttons rectangular, ink fill, white uppercase letter-spaced text.
   6. Numbered structure, generous whitespace, hard grid.
   7. Australian English. No em-dashes.
   ============================================================ */

:root{
  --ink:#111827;
  --paper:#ffffff;
  --accent:#2D9CDB;
  --tint:#F0F7FC;
  --rule:rgba(17,24,39,.16);
  --font:"Helvetica Neue",Helvetica,"Inter",Arial,sans-serif;
  --muted:rgba(17,24,39,.72);
  --faint:rgba(17,24,39,.55);
  interpolate-size:allow-keywords;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  font-size:17px;
  line-height:1.5;
}
::selection{background:var(--accent);color:#fff;}
img,video,svg{max-width:100%;}

.wrap{max-width:1320px;margin:0 auto;padding:0 clamp(20px,4vw,56px);}
.wrap-narrow{max-width:820px;margin:0 auto;padding:0 clamp(20px,4vw,56px);}

/* ---------- micro type ---------- */
.micro{
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  font-weight:500;
}
.idx{
  font-variant-numeric:tabular-nums;
  color:var(--accent);
}

/* ---------- top bar ---------- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--rule);
}
.bar{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;
}
.wordmark{
  font-weight:700;font-size:16px;letter-spacing:.02em;
  text-decoration:none;color:var(--ink);
}
.wordmark span{color:var(--accent);}
nav{display:flex;gap:32px;align-items:center;}
nav a{
  text-decoration:none;color:var(--ink);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:500;
  position:relative;
}
nav a:not(.btn)::after{
  content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;
  background:var(--accent);transition:width .25s ease;
}
nav a:not(.btn):hover::after{width:100%;}
@media(max-width:860px){nav a:not(.btn){display:none;}}

/* ---------- buttons ---------- */
.btn{
  display:inline-block;
  background:var(--ink);color:#fff!important;
  padding:12px 22px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:600;
  text-decoration:none;
  border:none;border-radius:0;
  font-family:var(--font);
  cursor:pointer;
  transition:background .2s ease;
}
.btn:hover{background:var(--accent);}
.btn:disabled,.btn[disabled]{background:rgba(17,24,39,.3);cursor:not-allowed;}
.btn.big{padding:20px 36px;font-size:13px;}
.btn.ghost{background:transparent;color:var(--ink)!important;border:1px solid var(--ink);}
.btn.ghost:hover{background:var(--ink);color:#fff!important;}
.btn.block{display:block;width:100%;text-align:center;}

/* ---------- section scaffolding ---------- */
section{border-bottom:1px solid var(--rule);}
.sect-head{
  display:flex;justify-content:space-between;align-items:baseline;
  padding:clamp(40px,6vw,72px) 0 clamp(28px,4vw,48px);
  gap:24px;flex-wrap:wrap;
}
h1{
  font-size:clamp(40px,7vw,96px);
  line-height:.98;
  letter-spacing:-.035em;
  font-weight:700;
  text-wrap:balance;
}
h2{
  font-size:clamp(32px,5vw,72px);
  letter-spacing:-.03em;line-height:1.02;font-weight:700;
  text-wrap:balance;
}
h3{font-size:clamp(18px,1.8vw,24px);letter-spacing:-.015em;line-height:1.15;}
h1 .accent,h2 .accent,h3 .accent{color:var(--accent);}

/* ---------- page head block (interior pages) ---------- */
.pagehead{
  padding:clamp(48px,8vw,110px) 0 clamp(32px,5vw,64px);
  border-bottom:1px solid var(--rule);
}
.pagehead .micro{display:block;margin-bottom:clamp(20px,3vw,32px);}
.pagehead p.lede{
  margin-top:clamp(20px,3vw,32px);
  font-size:clamp(17px,1.8vw,22px);line-height:1.45;
  max-width:34em;color:var(--muted);
}

/* ---------- card grids ---------- */
.cardgrid{
  display:grid;
  border-top:1px solid var(--rule);border-left:1px solid var(--rule);
  margin-bottom:clamp(48px,7vw,96px);
}
.cardgrid.c4{grid-template-columns:repeat(4,1fr);}
.cardgrid.c3{grid-template-columns:repeat(3,1fr);}
.cardgrid.c2{grid-template-columns:repeat(2,1fr);}
.card{
  border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);
  padding:clamp(24px,3vw,40px);
  transition:background .25s ease;
}
.card:hover{background:var(--tint);}
.card .n{font-size:13px;font-weight:600;color:var(--accent);margin-bottom:18px;font-variant-numeric:tabular-nums;}
.card h3{font-size:clamp(18px,1.7vw,23px);margin-bottom:10px;}
.card p{font-size:14px;color:var(--muted);line-height:1.5;}
@media(max-width:980px){.cardgrid.c4{grid-template-columns:repeat(2,1fr);}}
@media(max-width:760px){.cardgrid.c3,.cardgrid.c2{grid-template-columns:1fr;}}
@media(max-width:560px){.cardgrid.c4{grid-template-columns:1fr;}}

/* ---------- panel: a single bordered block, no shadow ---------- */
.panel{
  border:1px solid var(--rule);
  padding:clamp(24px,3vw,40px);
  background:var(--paper);
}
.panel.tinted{background:var(--tint);}

/* ---------- tables ---------- */
table.swiss{width:100%;border-collapse:collapse;margin-bottom:clamp(32px,5vw,64px);}
table.swiss th,table.swiss td{
  border:1px solid var(--rule);
  padding:clamp(12px,1.8vw,22px);
  text-align:left;vertical-align:top;
  font-size:15px;
}
table.swiss thead th{
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:600;
  background:var(--paper);
}
table.swiss thead th.hl{background:var(--ink);color:#fff;}
table.swiss td.hl{background:var(--tint);font-weight:600;}
table.swiss tbody th{font-weight:600;font-size:14px;background:var(--paper);}

/* ---------- forms ---------- */
.field{margin-bottom:clamp(20px,3vw,32px);}
.field > label,.field .label{
  display:block;
  font-size:11px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;
  margin-bottom:10px;color:var(--ink);
}
.field .hint{
  display:block;font-size:13px;color:var(--muted);margin-bottom:12px;line-height:1.45;
}
input[type=text],input[type=email],input[type=tel],input[type=url],
input[type=number],input[type=password],input[type=date],input[type=search],
select,textarea{
  width:100%;
  font-family:var(--font);
  font-size:16px;
  color:var(--ink);
  background:var(--paper);
  border:1px solid var(--rule);
  border-radius:0;
  padding:14px 16px;
  transition:border-color .2s ease,background .2s ease;
  -webkit-appearance:none;appearance:none;
}
select{
  background-image:linear-gradient(45deg,transparent 50%,var(--ink) 50%),linear-gradient(135deg,var(--ink) 50%,transparent 50%);
  background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
  padding-right:44px;
}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--accent);background:var(--tint);
}
textarea{min-height:140px;resize:vertical;line-height:1.5;}
::placeholder{color:rgba(17,24,39,.38);}

/* choice rows: rectangular, hairline, tint on hover, ink when selected */
.choice{
  display:flex;align-items:flex-start;gap:14px;
  border:1px solid var(--rule);
  padding:16px 18px;
  margin-bottom:-1px;
  cursor:pointer;
  font-size:15px;line-height:1.4;
  transition:background .2s ease,border-color .2s ease;
}
.choice:hover{background:var(--tint);}
.choice input{margin-top:3px;flex:0 0 auto;accent-color:var(--accent);}
.choice.selected,.choice:has(input:checked){
  background:var(--tint);border-color:var(--accent);position:relative;z-index:1;
}

/* ---------- progress rail ---------- */
.rail{height:2px;background:var(--rule);position:relative;}
.rail > i{display:block;height:2px;background:var(--accent);transition:width .35s ease;}

/* ---------- prose / article body ---------- */
.prose{font-size:17px;line-height:1.65;color:var(--ink);}
.prose > * + *{margin-top:1.15em;}
.prose h2{
  font-size:clamp(24px,3vw,38px);letter-spacing:-.025em;line-height:1.08;
  margin-top:2em;margin-bottom:.1em;
}
.prose h3{
  font-size:clamp(19px,2vw,25px);letter-spacing:-.015em;
  margin-top:1.8em;margin-bottom:.1em;
}
.prose p{max-width:38em;}
.prose ul,.prose ol{padding-left:1.15em;max-width:38em;}
.prose li{margin-top:.5em;}
.prose li::marker{color:var(--accent);}
.prose a{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--accent);}
.prose a:hover{color:var(--accent);}
.prose strong{font-weight:700;}
.prose blockquote{
  border-left:3px solid var(--accent);
  padding:4px 0 4px clamp(18px,2.5vw,28px);
  font-size:clamp(19px,2.2vw,26px);line-height:1.35;
  letter-spacing:-.02em;font-weight:600;max-width:26em;
}
.prose hr{border:none;border-top:1px solid var(--rule);margin:2.4em 0;}
.prose code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.88em;background:var(--tint);padding:2px 6px;
}
.prose img{border:1px solid var(--rule);display:block;}

/* ---------- list rows (index / navigation lists) ---------- */
.rowlist{border-top:1px solid var(--rule);}
.rowlist a.row,.rowlist .row{
  display:grid;
  grid-template-columns:80px 1fr auto;
  gap:24px;align-items:baseline;
  padding:clamp(22px,3vw,32px) 0;
  border-bottom:1px solid var(--rule);
  text-decoration:none;color:var(--ink);
  position:relative;
}
.rowlist .row .n{font-size:13px;font-weight:600;color:var(--accent);font-variant-numeric:tabular-nums;}
.rowlist .row .title{font-size:clamp(19px,2.2vw,28px);font-weight:700;letter-spacing:-.02em;line-height:1.15;}
.rowlist .row .meta{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);font-weight:500;margin-top:8px;display:block;}
.rowlist .row .excerpt{font-size:15px;color:var(--muted);margin-top:10px;max-width:44em;}
.rowlist .row .arrow{font-size:22px;transition:transform .3s ease,color .3s ease;}
.rowlist a.row::before{
  content:"";position:absolute;inset:0 -16px;
  background:var(--tint);
  transform:scaleX(0);transform-origin:left;
  transition:transform .35s cubic-bezier(.4,0,.2,1);
  z-index:-1;
}
.rowlist a.row:hover::before{transform:scaleX(1);}
.rowlist a.row:hover .arrow{transform:translateX(6px);color:var(--accent);}
@media(max-width:820px){
  .rowlist a.row,.rowlist .row{grid-template-columns:48px 1fr;}
  .rowlist .row .arrow{display:none;}
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--rule);margin-bottom:clamp(48px,7vw,96px);}
.faq-list details{border-bottom:1px solid var(--rule);}
.faq-list summary{
  list-style:none;cursor:pointer;
  display:flex;justify-content:space-between;align-items:baseline;gap:24px;
  padding:clamp(18px,2.4vw,28px) 0;
  font-size:clamp(17px,1.8vw,22px);font-weight:600;letter-spacing:-.01em;
  transition:color .2s ease;
}
.faq-list summary::-webkit-details-marker{display:none;}
.faq-list summary:hover{color:var(--accent);}
.faq-list summary .pm{
  flex:0 0 auto;font-weight:400;font-size:22px;color:var(--accent);
  transition:transform .3s ease;
}
.faq-list details[open] summary .pm{transform:rotate(45deg);}
.faq-list details p{
  padding:0 0 clamp(20px,2.4vw,28px);
  font-size:15px;line-height:1.6;color:rgba(17,24,39,.75);max-width:44em;
}

/* ---------- status / notice ---------- */
.notice{
  border-left:3px solid var(--accent);
  padding:16px 0 16px clamp(18px,2.5vw,28px);
  font-size:15px;line-height:1.55;color:var(--muted);
  margin:clamp(20px,3vw,32px) 0;
}
.notice strong{color:var(--ink);}
.notice.quiet{border-left-color:var(--rule);}

/* ---------- footer ---------- */
footer{padding:40px 0 56px;}
.foot{
  display:flex;justify-content:space-between;align-items:baseline;gap:24px;flex-wrap:wrap;
}
.foot .micro{color:var(--faint);}
.foot a{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--rule);}
.foot a:hover{border-color:var(--accent);color:var(--accent);}
.foot .links{display:flex;gap:20px;flex-wrap:wrap;}

/* ---------- reveal animation ---------- */
html.js .rv{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,1,.36,1);}
html.js .rv.in{opacity:1;transform:none;}
.rv.d1{transition-delay:.08s;}
.rv.d2{transition-delay:.16s;}
.rv.d3{transition-delay:.24s;}
@media(prefers-reduced-motion:reduce){
  html.js .rv{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ---------- utility ---------- */
.accent{color:var(--accent);}
.muted{color:var(--muted);}
.center{text-align:center;}
.hide{display:none!important;}
.stack-sm > * + *{margin-top:12px;}
.stack > * + *{margin-top:24px;}
.stack-lg > * + *{margin-top:clamp(32px,5vw,56px);}